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10070850 | <NME> redis_adapter.rb
<BEF> # frozen_string_literal: true
module Split
module Persistence
class RedisAdapter
DEFAULT_CONFIG = { namespace: "persistence" }.freeze
attr_reader :redis_key
def initialize(context, key = nil)
if key
@redis_key = "#{self.class.config[:namespace]}:#{key}"
elsif lookup_by = self.class.config[:lookup_by]
if lookup_by.respond_to?(:call)
key_frag = lookup_by.call(context)
else
key_frag = context.send(lookup_by)
end
@redis_key = "#{self.class.config[:namespace]}:#{key_frag}"
else
raise "Please configure lookup_by"
end
end
def [](field)
Split.redis.hget(redis_key, field)
end
def []=(field, value)
Split.redis.hset(redis_key, field, value)
expire_seconds = self.class.config[:expire_seconds]
Split.redis.expire(redis_key, expire_seconds) if expire_seconds
end
def delete(field)
Split.redis.hdel(redis_key, field)
end
def keys
Split.redis.hkeys(redis_key)
end
def self.find(user_id)
new(nil, user_id)
end
def self.with_config(options={})
self.config.merge!(options)
self
end
def self.config
@config ||= DEFAULT_CONFIG.dup
end
def self.reset_config!
@config = DEFAULT_CONFIG.dup
end
end
end
end
<MSG> Fix Layout/SpaceAroundEqualsInParameterDefault
<DFF> @@ -44,7 +44,7 @@ module Split
new(nil, user_id)
end
- def self.with_config(options={})
+ def self.with_config(options = {})
self.config.merge!(options)
self
end
| 1 | Fix Layout/SpaceAroundEqualsInParameterDefault | 1 | .rb | rb | mit | splitrb/split |
10070851 | <NME> redis_adapter.rb
<BEF> # frozen_string_literal: true
module Split
module Persistence
class RedisAdapter
DEFAULT_CONFIG = { namespace: "persistence" }.freeze
attr_reader :redis_key
def initialize(context, key = nil)
if key
@redis_key = "#{self.class.config[:namespace]}:#{key}"
elsif lookup_by = self.class.config[:lookup_by]
if lookup_by.respond_to?(:call)
key_frag = lookup_by.call(context)
else
key_frag = context.send(lookup_by)
end
@redis_key = "#{self.class.config[:namespace]}:#{key_frag}"
else
raise "Please configure lookup_by"
end
end
def [](field)
Split.redis.hget(redis_key, field)
end
def []=(field, value)
Split.redis.hset(redis_key, field, value)
expire_seconds = self.class.config[:expire_seconds]
Split.redis.expire(redis_key, expire_seconds) if expire_seconds
end
def delete(field)
Split.redis.hdel(redis_key, field)
end
def keys
Split.redis.hkeys(redis_key)
end
def self.find(user_id)
new(nil, user_id)
end
def self.with_config(options={})
self.config.merge!(options)
self
end
def self.config
@config ||= DEFAULT_CONFIG.dup
end
def self.reset_config!
@config = DEFAULT_CONFIG.dup
end
end
end
end
<MSG> Fix Layout/SpaceAroundEqualsInParameterDefault
<DFF> @@ -44,7 +44,7 @@ module Split
new(nil, user_id)
end
- def self.with_config(options={})
+ def self.with_config(options = {})
self.config.merge!(options)
self
end
| 1 | Fix Layout/SpaceAroundEqualsInParameterDefault | 1 | .rb | rb | mit | splitrb/split |
10070852 | <NME> split.rb
<BEF> # frozen_string_literal: true
require "redis"
require "split/algorithms"
require "split/algorithms/block_randomization"
require "split/algorithms/weighted_sample"
require "split/algorithms/whiplash"
require "split/alternative"
require "split/cache"
require "split/configuration"
require "split/encapsulated_helper"
require "split/exceptions"
require "split/experiment"
require "split/experiment_catalog"
require "split/extensions/string"
require "split/goals_collection"
require "split/helper"
require "split/combined_experiments_helper"
require "split/metric"
require "split/persistence"
require "split/redis_interface"
require "split/trial"
require "split/user"
require "split/version"
require "split/zscore"
require "split/engine" if defined?(Rails)
module Split
extend self
attr_accessor :configuration
# Accepts:
# 1. A redis URL (valid for `Redis.new(url: url)`)
# 2. an options hash compatible with `Redis.new`
# 3. or a valid Redis instance (one that responds to `#smembers`). Likely,
# this will be an instance of either `Redis`, `Redis::Client`,
# `Redis::DistRedis`, or `Redis::Namespace`.
def redis=(server)
@redis = if server.is_a?(String)
Redis.new(url: server)
elsif server.is_a?(Hash)
Redis.new(server)
elsif server.respond_to?(:smembers)
server
else
raise ArgumentError,
"You must supply a url, options hash or valid Redis connection instance"
end
end
# Returns the current Redis connection. If none has been created, will
# create a new one.
def redis
return @redis if @redis
self.redis = self.configuration.redis
self.redis
end
# Call this method to modify defaults in your initializers.
#
# @example
# Split.configure do |config|
# config.ignore_ip_addresses = '192.168.2.1'
# end
def configure
self.configuration ||= Configuration.new
yield(configuration)
end
def cache(namespace, key, &block)
Split::Cache.fetch(namespace, key, &block)
end
# Check to see if being run in a Rails application. If so, wait until before_initialize to run configuration so Gems that create ENV variables have the chance to initialize first.
if defined?(::Rails)
class Railtie < Rails::Railtie
config.before_initialize { Split.configure {} }
end
else
else
Split.configure { }
end
<MSG> Merge pull request #666 from avit/split-namespace
Keep railtie defined under the Split gem namespace
<DFF> @@ -74,7 +74,7 @@ end
# Check to see if being run in a Rails application. If so, wait until before_initialize to run configuration so Gems that create ENV variables have the chance to initialize first.
if defined?(::Rails)
- class Railtie < Rails::Railtie
+ class Split::Railtie < Rails::Railtie
config.before_initialize { Split.configure {} }
end
else
| 1 | Merge pull request #666 from avit/split-namespace | 1 | .rb | rb | mit | splitrb/split |
10070853 | <NME> split.rb
<BEF> # frozen_string_literal: true
require "redis"
require "split/algorithms"
require "split/algorithms/block_randomization"
require "split/algorithms/weighted_sample"
require "split/algorithms/whiplash"
require "split/alternative"
require "split/cache"
require "split/configuration"
require "split/encapsulated_helper"
require "split/exceptions"
require "split/experiment"
require "split/experiment_catalog"
require "split/extensions/string"
require "split/goals_collection"
require "split/helper"
require "split/combined_experiments_helper"
require "split/metric"
require "split/persistence"
require "split/redis_interface"
require "split/trial"
require "split/user"
require "split/version"
require "split/zscore"
require "split/engine" if defined?(Rails)
module Split
extend self
attr_accessor :configuration
# Accepts:
# 1. A redis URL (valid for `Redis.new(url: url)`)
# 2. an options hash compatible with `Redis.new`
# 3. or a valid Redis instance (one that responds to `#smembers`). Likely,
# this will be an instance of either `Redis`, `Redis::Client`,
# `Redis::DistRedis`, or `Redis::Namespace`.
def redis=(server)
@redis = if server.is_a?(String)
Redis.new(url: server)
elsif server.is_a?(Hash)
Redis.new(server)
elsif server.respond_to?(:smembers)
server
else
raise ArgumentError,
"You must supply a url, options hash or valid Redis connection instance"
end
end
# Returns the current Redis connection. If none has been created, will
# create a new one.
def redis
return @redis if @redis
self.redis = self.configuration.redis
self.redis
end
# Call this method to modify defaults in your initializers.
#
# @example
# Split.configure do |config|
# config.ignore_ip_addresses = '192.168.2.1'
# end
def configure
self.configuration ||= Configuration.new
yield(configuration)
end
def cache(namespace, key, &block)
Split::Cache.fetch(namespace, key, &block)
end
# Check to see if being run in a Rails application. If so, wait until before_initialize to run configuration so Gems that create ENV variables have the chance to initialize first.
if defined?(::Rails)
class Railtie < Rails::Railtie
config.before_initialize { Split.configure {} }
end
else
else
Split.configure { }
end
<MSG> Merge pull request #666 from avit/split-namespace
Keep railtie defined under the Split gem namespace
<DFF> @@ -74,7 +74,7 @@ end
# Check to see if being run in a Rails application. If so, wait until before_initialize to run configuration so Gems that create ENV variables have the chance to initialize first.
if defined?(::Rails)
- class Railtie < Rails::Railtie
+ class Split::Railtie < Rails::Railtie
config.before_initialize { Split.configure {} }
end
else
| 1 | Merge pull request #666 from avit/split-namespace | 1 | .rb | rb | mit | splitrb/split |
10070854 | <NME> split.rb
<BEF> # frozen_string_literal: true
require "redis"
require "split/algorithms"
require "split/algorithms/block_randomization"
require "split/algorithms/weighted_sample"
require "split/algorithms/whiplash"
require "split/alternative"
require "split/cache"
require "split/configuration"
require "split/encapsulated_helper"
require "split/exceptions"
require "split/experiment"
require "split/experiment_catalog"
require "split/extensions/string"
require "split/goals_collection"
require "split/helper"
require "split/combined_experiments_helper"
require "split/metric"
require "split/persistence"
require "split/redis_interface"
require "split/trial"
require "split/user"
require "split/version"
require "split/zscore"
require "split/engine" if defined?(Rails)
module Split
extend self
attr_accessor :configuration
# Accepts:
# 1. A redis URL (valid for `Redis.new(url: url)`)
# 2. an options hash compatible with `Redis.new`
# 3. or a valid Redis instance (one that responds to `#smembers`). Likely,
# this will be an instance of either `Redis`, `Redis::Client`,
# `Redis::DistRedis`, or `Redis::Namespace`.
def redis=(server)
@redis = if server.is_a?(String)
Redis.new(url: server)
elsif server.is_a?(Hash)
Redis.new(server)
elsif server.respond_to?(:smembers)
server
else
raise ArgumentError,
"You must supply a url, options hash or valid Redis connection instance"
end
end
# Returns the current Redis connection. If none has been created, will
# create a new one.
def redis
return @redis if @redis
self.redis = self.configuration.redis
self.redis
end
# Call this method to modify defaults in your initializers.
#
# @example
# Split.configure do |config|
# config.ignore_ip_addresses = '192.168.2.1'
# end
def configure
self.configuration ||= Configuration.new
yield(configuration)
end
def cache(namespace, key, &block)
Split::Cache.fetch(namespace, key, &block)
end
# Check to see if being run in a Rails application. If so, wait until before_initialize to run configuration so Gems that create ENV variables have the chance to initialize first.
if defined?(::Rails)
class Railtie < Rails::Railtie
config.before_initialize { Split.configure {} }
end
else
else
Split.configure { }
end
<MSG> Merge pull request #666 from avit/split-namespace
Keep railtie defined under the Split gem namespace
<DFF> @@ -74,7 +74,7 @@ end
# Check to see if being run in a Rails application. If so, wait until before_initialize to run configuration so Gems that create ENV variables have the chance to initialize first.
if defined?(::Rails)
- class Railtie < Rails::Railtie
+ class Split::Railtie < Rails::Railtie
config.before_initialize { Split.configure {} }
end
else
| 1 | Merge pull request #666 from avit/split-namespace | 1 | .rb | rb | mit | splitrb/split |
10070855 | <NME> jquery.meow.css
<BEF> .meows {
position: fixed;
top: 0;
right: 0;
}
.meow {
margin: 20px 20px 0 0;
position: relative;
}
.meow .inner {
background: #191919;
zoom: 1;
-webkit-opacity: 0.75;
-khtml-opacity: 0.75;
-moz-opacity: 0.75;
-o-opacity: 0.75;
opacity: 0.75;
border: 2px solid transparent;
-webkit-border-radius: 10px;
-khtml-border-radius: 10px;
-moz-border-radius: 10px;
-o-border-radius: 10px;
border-radius: 10px;
-webkit-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
-khtml-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
-moz-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
-o-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
color: #fff;
font-family: Helvetica, Arial, sans-serif;
font-size: 15px;
padding: 10px;
text-shadow: 1px 1px 3px #000;
width: 300px;
min-height: 48px;
}
.meow .inner:after {
content: "\0200";
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}
.meow.hover .inner {
border: 2px solid #fff;
}
.meow .inner h1 {
font-size: 14px;
font-weight: bold;
margin: 0;
padding: 0;
line-height: 1;
}
.meow .inner .icon {
width: 48px;
height: 48px;
float: left;
margin-right: 6px;
}
.meow .inner .icon img {
max-width: 48px;
max-height: 48px;
}
.meow .inner .close {
display: none;
}
.meow.hover .inner .close {
background: #191919;
zoom: 1;
-webkit-opacity: 0.75;
-khtml-opacity: 0.75;
-moz-opacity: 0.75;
-o-opacity: 0.75;
opacity: 0.75;
border: 2px solid #ffffff;
-webkit-border-radius: 18px;
-khtml-border-radius: 18px;
-moz-border-radius: 18px;
-o-border-radius: 18px;
border-radius: 18px;
color: #ffffff;
display: block;
font-size: 22px;
font-weight: 500;
height: 18px;
left: 4px;
line-height: 14px;
position: absolute;
text-align: center;
text-decoration: none;
top: 4px;
width: 18px;
}
-ms-opacity: 0.75;
-o-opacity: 0.75;
opacity: 0.75;
zoom: 1;
}
<MSG> remove less and tidy up css
<DFF> @@ -3,92 +3,101 @@
top: 0;
right: 0;
}
+
.meow {
- margin: 20px 20px 0 0;
position: relative;
+ margin: 20px 20px 0 0;
}
+
.meow .inner {
+ width: 300px;
+ min-height: 48px;
+ padding: 10px;
+ font-family: Helvetica, Arial, sans-serif;
+ font-size: 15px;
+ color: #fff;
+ text-shadow: 1px 1px 3px #000;
background: #191919;
- zoom: 1;
- -webkit-opacity: 0.75;
- -khtml-opacity: 0.75;
- -moz-opacity: 0.75;
- -o-opacity: 0.75;
- opacity: 0.75;
border: 2px solid transparent;
-webkit-border-radius: 10px;
- -khtml-border-radius: 10px;
- -moz-border-radius: 10px;
- -o-border-radius: 10px;
- border-radius: 10px;
+ -khtml-border-radius: 10px;
+ -moz-border-radius: 10px;
+ -o-border-radius: 10px;
+ border-radius: 10px;
+ -webkit-opacity: 0.75;
+ -khtml-opacity: 0.75;
+ -moz-opacity: 0.75;
+ -o-opacity: 0.75;
+ opacity: 0.75;
+ zoom: 1;
-webkit-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
- -khtml-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
- -moz-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
- -o-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
- box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
- color: #fff;
- font-family: Helvetica, Arial, sans-serif;
- font-size: 15px;
- padding: 10px;
- text-shadow: 1px 1px 3px #000;
- width: 300px;
- min-height: 48px;
+ -khtml-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
+ -moz-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
+ -o-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
+ box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
}
+
.meow .inner:after {
- content: "\0200";
display: block;
+ height: 0;
clear: both;
- visibility: hidden;
line-height: 0;
- height: 0;
+ content: "\0200";
+ visibility: hidden;
}
+
.meow.hover .inner {
border: 2px solid #fff;
}
+
.meow .inner h1 {
+ padding: 0;
+ margin: 0;
font-size: 14px;
font-weight: bold;
- margin: 0;
- padding: 0;
line-height: 1;
}
+
.meow .inner .icon {
+ float: left;
width: 48px;
height: 48px;
- float: left;
margin-right: 6px;
}
+
.meow .inner .icon img {
max-width: 48px;
max-height: 48px;
}
+
.meow .inner .close {
display: none;
}
+
.meow.hover .inner .close {
- background: #191919;
- zoom: 1;
- -webkit-opacity: 0.75;
- -khtml-opacity: 0.75;
- -moz-opacity: 0.75;
- -o-opacity: 0.75;
- opacity: 0.75;
- border: 2px solid #ffffff;
- -webkit-border-radius: 18px;
- -khtml-border-radius: 18px;
- -moz-border-radius: 18px;
- -o-border-radius: 18px;
- border-radius: 18px;
- color: #ffffff;
+ position: absolute;
+ top: 4px;
+ left: 4px;
display: block;
+ width: 18px;
+ height: 18px;
font-size: 22px;
font-weight: 500;
- height: 18px;
- left: 4px;
line-height: 14px;
- position: absolute;
+ color: #ffffff;
text-align: center;
text-decoration: none;
- top: 4px;
- width: 18px;
+ background: #191919;
+ border: 2px solid #ffffff;
+ -webkit-border-radius: 18px;
+ -khtml-border-radius: 18px;
+ -moz-border-radius: 18px;
+ -o-border-radius: 18px;
+ border-radius: 18px;
+ -webkit-opacity: 0.75;
+ -khtml-opacity: 0.75;
+ -moz-opacity: 0.75;
+ -o-opacity: 0.75;
+ opacity: 0.75;
+ zoom: 1;
}
| 56 | remove less and tidy up css | 47 | .css | meow | mit | zacstewart/Meow |
10070856 | <NME> jquery.meow.css
<BEF> .meows {
position: fixed;
top: 0;
right: 0;
}
.meow {
margin: 20px 20px 0 0;
position: relative;
}
.meow .inner {
background: #191919;
zoom: 1;
-webkit-opacity: 0.75;
-khtml-opacity: 0.75;
-moz-opacity: 0.75;
-o-opacity: 0.75;
opacity: 0.75;
border: 2px solid transparent;
-webkit-border-radius: 10px;
-khtml-border-radius: 10px;
-moz-border-radius: 10px;
-o-border-radius: 10px;
border-radius: 10px;
-webkit-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
-khtml-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
-moz-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
-o-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
color: #fff;
font-family: Helvetica, Arial, sans-serif;
font-size: 15px;
padding: 10px;
text-shadow: 1px 1px 3px #000;
width: 300px;
min-height: 48px;
}
.meow .inner:after {
content: "\0200";
display: block;
clear: both;
visibility: hidden;
line-height: 0;
height: 0;
}
.meow.hover .inner {
border: 2px solid #fff;
}
.meow .inner h1 {
font-size: 14px;
font-weight: bold;
margin: 0;
padding: 0;
line-height: 1;
}
.meow .inner .icon {
width: 48px;
height: 48px;
float: left;
margin-right: 6px;
}
.meow .inner .icon img {
max-width: 48px;
max-height: 48px;
}
.meow .inner .close {
display: none;
}
.meow.hover .inner .close {
background: #191919;
zoom: 1;
-webkit-opacity: 0.75;
-khtml-opacity: 0.75;
-moz-opacity: 0.75;
-o-opacity: 0.75;
opacity: 0.75;
border: 2px solid #ffffff;
-webkit-border-radius: 18px;
-khtml-border-radius: 18px;
-moz-border-radius: 18px;
-o-border-radius: 18px;
border-radius: 18px;
color: #ffffff;
display: block;
font-size: 22px;
font-weight: 500;
height: 18px;
left: 4px;
line-height: 14px;
position: absolute;
text-align: center;
text-decoration: none;
top: 4px;
width: 18px;
}
-ms-opacity: 0.75;
-o-opacity: 0.75;
opacity: 0.75;
zoom: 1;
}
<MSG> remove less and tidy up css
<DFF> @@ -3,92 +3,101 @@
top: 0;
right: 0;
}
+
.meow {
- margin: 20px 20px 0 0;
position: relative;
+ margin: 20px 20px 0 0;
}
+
.meow .inner {
+ width: 300px;
+ min-height: 48px;
+ padding: 10px;
+ font-family: Helvetica, Arial, sans-serif;
+ font-size: 15px;
+ color: #fff;
+ text-shadow: 1px 1px 3px #000;
background: #191919;
- zoom: 1;
- -webkit-opacity: 0.75;
- -khtml-opacity: 0.75;
- -moz-opacity: 0.75;
- -o-opacity: 0.75;
- opacity: 0.75;
border: 2px solid transparent;
-webkit-border-radius: 10px;
- -khtml-border-radius: 10px;
- -moz-border-radius: 10px;
- -o-border-radius: 10px;
- border-radius: 10px;
+ -khtml-border-radius: 10px;
+ -moz-border-radius: 10px;
+ -o-border-radius: 10px;
+ border-radius: 10px;
+ -webkit-opacity: 0.75;
+ -khtml-opacity: 0.75;
+ -moz-opacity: 0.75;
+ -o-opacity: 0.75;
+ opacity: 0.75;
+ zoom: 1;
-webkit-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
- -khtml-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
- -moz-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
- -o-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
- box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
- color: #fff;
- font-family: Helvetica, Arial, sans-serif;
- font-size: 15px;
- padding: 10px;
- text-shadow: 1px 1px 3px #000;
- width: 300px;
- min-height: 48px;
+ -khtml-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
+ -moz-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
+ -o-box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
+ box-shadow: 2px 2px 10px rgba(25, 25, 25, 0.25);
}
+
.meow .inner:after {
- content: "\0200";
display: block;
+ height: 0;
clear: both;
- visibility: hidden;
line-height: 0;
- height: 0;
+ content: "\0200";
+ visibility: hidden;
}
+
.meow.hover .inner {
border: 2px solid #fff;
}
+
.meow .inner h1 {
+ padding: 0;
+ margin: 0;
font-size: 14px;
font-weight: bold;
- margin: 0;
- padding: 0;
line-height: 1;
}
+
.meow .inner .icon {
+ float: left;
width: 48px;
height: 48px;
- float: left;
margin-right: 6px;
}
+
.meow .inner .icon img {
max-width: 48px;
max-height: 48px;
}
+
.meow .inner .close {
display: none;
}
+
.meow.hover .inner .close {
- background: #191919;
- zoom: 1;
- -webkit-opacity: 0.75;
- -khtml-opacity: 0.75;
- -moz-opacity: 0.75;
- -o-opacity: 0.75;
- opacity: 0.75;
- border: 2px solid #ffffff;
- -webkit-border-radius: 18px;
- -khtml-border-radius: 18px;
- -moz-border-radius: 18px;
- -o-border-radius: 18px;
- border-radius: 18px;
- color: #ffffff;
+ position: absolute;
+ top: 4px;
+ left: 4px;
display: block;
+ width: 18px;
+ height: 18px;
font-size: 22px;
font-weight: 500;
- height: 18px;
- left: 4px;
line-height: 14px;
- position: absolute;
+ color: #ffffff;
text-align: center;
text-decoration: none;
- top: 4px;
- width: 18px;
+ background: #191919;
+ border: 2px solid #ffffff;
+ -webkit-border-radius: 18px;
+ -khtml-border-radius: 18px;
+ -moz-border-radius: 18px;
+ -o-border-radius: 18px;
+ border-radius: 18px;
+ -webkit-opacity: 0.75;
+ -khtml-opacity: 0.75;
+ -moz-opacity: 0.75;
+ -o-opacity: 0.75;
+ opacity: 0.75;
+ zoom: 1;
}
| 56 | remove less and tidy up css | 47 | .css | meow | mit | zacstewart/Meow |
10070857 | <NME> index.ts
<BEF> import StreamReader from '@emmetio/stream-reader';
import { isAlphaWord } from '@emmetio/stream-reader/utils';
import consumeColor from './color';
import consumeNumericValue from './number';
import consumeArguments, { consumeKeywordOrFunction } from './function';
export * from './tokenizer/tokens';
export { CSSProperty, CSSValue, ParseOptions, FunctionCall, Value } from './parser';
export type CSSAbbreviation = CSSProperty[];
/**
* Parses given abbreviation into property set
*/
export default function parse(abbr: string | AllTokens[], options?: ParseOptions): CSSAbbreviation {
try {
const tokens = typeof abbr === 'string' ? tokenize(abbr, options && options.value) : abbr;
return parser(tokens, options);
} catch (err) {
if (err instanceof ScannerError && typeof abbr === 'string') {
err.message += `\n${abbr}\n${'-'.repeat(err.pos)}^`;
* Parses given Emmet CSS abbreviation and returns it as parsed Node tree
*/
export default function parseAbbreviation(source: string): CSSAbbreviation {
const stream = new StreamReader(source);
const result: CSSAbbreviation = {
type: 'CSSAbbreviation',
elements: [],
/**
* Consumes CSS property identifier from given stream
*/
function consumeIdent(stream: StreamReader): string | undefined {
const start = stream.pos;
if (stream.eat(isAlphaWord) || stream.eatWhile(isIdentPrefix)) {
stream.eatWhile(isAlphaWord);
/**
* Consumes embedded value from Emmet CSS abbreviation stream
*/
function consumeValue(stream: StreamReader): CSSValue[] | undefined {
const values: CSSValue[] = [];
let value: CSSValue | undefined;
<MSG> Renamed StreamReader to Scanner
<DFF> @@ -1,5 +1,5 @@
-import StreamReader from '@emmetio/stream-reader';
-import { isAlphaWord } from '@emmetio/stream-reader/utils';
+import Scanner from '@emmetio/scanner';
+import { isAlphaWord } from '@emmetio/scanner/utils';
import consumeColor from './color';
import consumeNumericValue from './number';
import consumeArguments, { consumeKeywordOrFunction } from './function';
@@ -20,7 +20,7 @@ const enum Chars {
* Parses given Emmet CSS abbreviation and returns it as parsed Node tree
*/
export default function parseAbbreviation(source: string): CSSAbbreviation {
- const stream = new StreamReader(source);
+ const stream = new Scanner(source);
const result: CSSAbbreviation = {
type: 'CSSAbbreviation',
elements: [],
@@ -69,7 +69,7 @@ export default function parseAbbreviation(source: string): CSSAbbreviation {
/**
* Consumes CSS property identifier from given stream
*/
-function consumeIdent(stream: StreamReader): string | undefined {
+function consumeIdent(stream: Scanner): string | undefined {
const start = stream.pos;
if (stream.eat(isAlphaWord) || stream.eatWhile(isIdentPrefix)) {
stream.eatWhile(isAlphaWord);
@@ -81,7 +81,7 @@ function consumeIdent(stream: StreamReader): string | undefined {
/**
* Consumes embedded value from Emmet CSS abbreviation stream
*/
-function consumeValue(stream: StreamReader): CSSValue[] | undefined {
+function consumeValue(stream: Scanner): CSSValue[] | undefined {
const values: CSSValue[] = [];
let value: CSSValue | undefined;
| 5 | Renamed StreamReader to Scanner | 5 | .ts | ts | mit | emmetio/emmet |
10070858 | <NME> index.ts
<BEF> import StreamReader from '@emmetio/stream-reader';
import { isAlphaWord } from '@emmetio/stream-reader/utils';
import consumeColor from './color';
import consumeNumericValue from './number';
import consumeArguments, { consumeKeywordOrFunction } from './function';
export * from './tokenizer/tokens';
export { CSSProperty, CSSValue, ParseOptions, FunctionCall, Value } from './parser';
export type CSSAbbreviation = CSSProperty[];
/**
* Parses given abbreviation into property set
*/
export default function parse(abbr: string | AllTokens[], options?: ParseOptions): CSSAbbreviation {
try {
const tokens = typeof abbr === 'string' ? tokenize(abbr, options && options.value) : abbr;
return parser(tokens, options);
} catch (err) {
if (err instanceof ScannerError && typeof abbr === 'string') {
err.message += `\n${abbr}\n${'-'.repeat(err.pos)}^`;
* Parses given Emmet CSS abbreviation and returns it as parsed Node tree
*/
export default function parseAbbreviation(source: string): CSSAbbreviation {
const stream = new StreamReader(source);
const result: CSSAbbreviation = {
type: 'CSSAbbreviation',
elements: [],
/**
* Consumes CSS property identifier from given stream
*/
function consumeIdent(stream: StreamReader): string | undefined {
const start = stream.pos;
if (stream.eat(isAlphaWord) || stream.eatWhile(isIdentPrefix)) {
stream.eatWhile(isAlphaWord);
/**
* Consumes embedded value from Emmet CSS abbreviation stream
*/
function consumeValue(stream: StreamReader): CSSValue[] | undefined {
const values: CSSValue[] = [];
let value: CSSValue | undefined;
<MSG> Renamed StreamReader to Scanner
<DFF> @@ -1,5 +1,5 @@
-import StreamReader from '@emmetio/stream-reader';
-import { isAlphaWord } from '@emmetio/stream-reader/utils';
+import Scanner from '@emmetio/scanner';
+import { isAlphaWord } from '@emmetio/scanner/utils';
import consumeColor from './color';
import consumeNumericValue from './number';
import consumeArguments, { consumeKeywordOrFunction } from './function';
@@ -20,7 +20,7 @@ const enum Chars {
* Parses given Emmet CSS abbreviation and returns it as parsed Node tree
*/
export default function parseAbbreviation(source: string): CSSAbbreviation {
- const stream = new StreamReader(source);
+ const stream = new Scanner(source);
const result: CSSAbbreviation = {
type: 'CSSAbbreviation',
elements: [],
@@ -69,7 +69,7 @@ export default function parseAbbreviation(source: string): CSSAbbreviation {
/**
* Consumes CSS property identifier from given stream
*/
-function consumeIdent(stream: StreamReader): string | undefined {
+function consumeIdent(stream: Scanner): string | undefined {
const start = stream.pos;
if (stream.eat(isAlphaWord) || stream.eatWhile(isIdentPrefix)) {
stream.eatWhile(isAlphaWord);
@@ -81,7 +81,7 @@ function consumeIdent(stream: StreamReader): string | undefined {
/**
* Consumes embedded value from Emmet CSS abbreviation stream
*/
-function consumeValue(stream: StreamReader): CSSValue[] | undefined {
+function consumeValue(stream: Scanner): CSSValue[] | undefined {
const values: CSSValue[] = [];
let value: CSSValue | undefined;
| 5 | Renamed StreamReader to Scanner | 5 | .ts | ts | mit | emmetio/emmet |
10070859 | <NME> trial.rb
<BEF> # frozen_string_literal: true
module Split
class Trial
attr_accessor :experiment
attr_accessor :metadata
def initialize(attrs = {})
self.experiment = attrs.delete(:experiment)
def initialize(attrs = {})
self.experiment = attrs.delete(:experiment)
self.alternative = attrs.delete(:alternative)
self.metadata = attrs.delete(:metadata)
self.goals = attrs.delete(:goals) || []
@user = attrs.delete(:user)
@options = attrs
@alternative_chosen = false
end
def metadata
@metadata ||= experiment.metadata[alternative.name] if experiment.metadata
end
def alternative
@alternative ||= if @experiment.has_winner?
@experiment.winner
end
end
def alternative=(alternative)
@alternative = if alternative.kind_of?(Split::Alternative)
alternative
else
@experiment.alternatives.find { |a| a.name == alternative }
end
end
def complete!(context = nil)
if alternative
if Array(goals).empty?
alternative.increment_completion
else
Array(goals).each { |g| alternative.increment_completion(g) }
end
run_callback context, Split.configuration.on_trial_complete
end
end
# Choose an alternative, add a participant, and save the alternative choice on the user. This
# method is guaranteed to only run once, and will skip the alternative choosing process if run
# a second time.
def choose!(context = nil)
@user.cleanup_old_experiments!
# Only run the process once
return alternative if @alternative_chosen
new_participant = @user[@experiment.key].nil?
if override_is_alternative?
self.alternative = @options[:override]
if should_store_alternative? && !@user[@experiment.key]
self.alternative.increment_participation
end
elsif @options[:disabled] || Split.configuration.disabled?
self.alternative = @experiment.control
elsif @experiment.has_winner?
self.alternative = @experiment.winner
else
cleanup_old_versions
if exclude_user?
self.alternative = @experiment.control
else
self.alternative = @user[@experiment.key]
if alternative.nil?
if @experiment.cohorting_disabled?
self.alternative = @experiment.control
else
self.alternative = @experiment.next_alternative
# Increment the number of participants since we are actually choosing a new alternative
self.alternative.increment_participation
run_callback context, Split.configuration.on_trial_choose
end
end
end
end
new_participant_and_cohorting_disabled = new_participant && @experiment.cohorting_disabled?
@user[@experiment.key] = alternative.name unless @experiment.has_winner? || !should_store_alternative? || new_participant_and_cohorting_disabled
@alternative_chosen = true
run_callback context, Split.configuration.on_trial unless @options[:disabled] || Split.configuration.disabled? || new_participant_and_cohorting_disabled
alternative
end
private
def run_callback(context, callback_name)
context.send(callback_name, self) if callback_name && context.respond_to?(callback_name, true)
end
def override_is_alternative?
@experiment.alternatives.map(&:name).include?(@options[:override])
end
def should_store_alternative?
if @options[:override] || @options[:disabled]
Split.configuration.store_override
else
!exclude_user?
end
end
def cleanup_old_versions
if @experiment.version > 0
@user.cleanup_old_versions!(@experiment)
end
end
def exclude_user?
@options[:exclude] || @experiment.start_time.nil? || @user.max_experiments_reached?(@experiment.key)
end
end
end
<MSG> Fix warning: method redefined; discarding old metadata
<DFF> @@ -2,7 +2,7 @@
module Split
class Trial
attr_accessor :experiment
- attr_accessor :metadata
+ attr_writer :metadata
def initialize(attrs = {})
self.experiment = attrs.delete(:experiment)
| 1 | Fix warning: method redefined; discarding old metadata | 1 | .rb | rb | mit | splitrb/split |
10070860 | <NME> trial.rb
<BEF> # frozen_string_literal: true
module Split
class Trial
attr_accessor :experiment
attr_accessor :metadata
def initialize(attrs = {})
self.experiment = attrs.delete(:experiment)
def initialize(attrs = {})
self.experiment = attrs.delete(:experiment)
self.alternative = attrs.delete(:alternative)
self.metadata = attrs.delete(:metadata)
self.goals = attrs.delete(:goals) || []
@user = attrs.delete(:user)
@options = attrs
@alternative_chosen = false
end
def metadata
@metadata ||= experiment.metadata[alternative.name] if experiment.metadata
end
def alternative
@alternative ||= if @experiment.has_winner?
@experiment.winner
end
end
def alternative=(alternative)
@alternative = if alternative.kind_of?(Split::Alternative)
alternative
else
@experiment.alternatives.find { |a| a.name == alternative }
end
end
def complete!(context = nil)
if alternative
if Array(goals).empty?
alternative.increment_completion
else
Array(goals).each { |g| alternative.increment_completion(g) }
end
run_callback context, Split.configuration.on_trial_complete
end
end
# Choose an alternative, add a participant, and save the alternative choice on the user. This
# method is guaranteed to only run once, and will skip the alternative choosing process if run
# a second time.
def choose!(context = nil)
@user.cleanup_old_experiments!
# Only run the process once
return alternative if @alternative_chosen
new_participant = @user[@experiment.key].nil?
if override_is_alternative?
self.alternative = @options[:override]
if should_store_alternative? && !@user[@experiment.key]
self.alternative.increment_participation
end
elsif @options[:disabled] || Split.configuration.disabled?
self.alternative = @experiment.control
elsif @experiment.has_winner?
self.alternative = @experiment.winner
else
cleanup_old_versions
if exclude_user?
self.alternative = @experiment.control
else
self.alternative = @user[@experiment.key]
if alternative.nil?
if @experiment.cohorting_disabled?
self.alternative = @experiment.control
else
self.alternative = @experiment.next_alternative
# Increment the number of participants since we are actually choosing a new alternative
self.alternative.increment_participation
run_callback context, Split.configuration.on_trial_choose
end
end
end
end
new_participant_and_cohorting_disabled = new_participant && @experiment.cohorting_disabled?
@user[@experiment.key] = alternative.name unless @experiment.has_winner? || !should_store_alternative? || new_participant_and_cohorting_disabled
@alternative_chosen = true
run_callback context, Split.configuration.on_trial unless @options[:disabled] || Split.configuration.disabled? || new_participant_and_cohorting_disabled
alternative
end
private
def run_callback(context, callback_name)
context.send(callback_name, self) if callback_name && context.respond_to?(callback_name, true)
end
def override_is_alternative?
@experiment.alternatives.map(&:name).include?(@options[:override])
end
def should_store_alternative?
if @options[:override] || @options[:disabled]
Split.configuration.store_override
else
!exclude_user?
end
end
def cleanup_old_versions
if @experiment.version > 0
@user.cleanup_old_versions!(@experiment)
end
end
def exclude_user?
@options[:exclude] || @experiment.start_time.nil? || @user.max_experiments_reached?(@experiment.key)
end
end
end
<MSG> Fix warning: method redefined; discarding old metadata
<DFF> @@ -2,7 +2,7 @@
module Split
class Trial
attr_accessor :experiment
- attr_accessor :metadata
+ attr_writer :metadata
def initialize(attrs = {})
self.experiment = attrs.delete(:experiment)
| 1 | Fix warning: method redefined; discarding old metadata | 1 | .rb | rb | mit | splitrb/split |
10070861 | <NME> trial.rb
<BEF> # frozen_string_literal: true
module Split
class Trial
attr_accessor :experiment
attr_accessor :metadata
def initialize(attrs = {})
self.experiment = attrs.delete(:experiment)
def initialize(attrs = {})
self.experiment = attrs.delete(:experiment)
self.alternative = attrs.delete(:alternative)
self.metadata = attrs.delete(:metadata)
self.goals = attrs.delete(:goals) || []
@user = attrs.delete(:user)
@options = attrs
@alternative_chosen = false
end
def metadata
@metadata ||= experiment.metadata[alternative.name] if experiment.metadata
end
def alternative
@alternative ||= if @experiment.has_winner?
@experiment.winner
end
end
def alternative=(alternative)
@alternative = if alternative.kind_of?(Split::Alternative)
alternative
else
@experiment.alternatives.find { |a| a.name == alternative }
end
end
def complete!(context = nil)
if alternative
if Array(goals).empty?
alternative.increment_completion
else
Array(goals).each { |g| alternative.increment_completion(g) }
end
run_callback context, Split.configuration.on_trial_complete
end
end
# Choose an alternative, add a participant, and save the alternative choice on the user. This
# method is guaranteed to only run once, and will skip the alternative choosing process if run
# a second time.
def choose!(context = nil)
@user.cleanup_old_experiments!
# Only run the process once
return alternative if @alternative_chosen
new_participant = @user[@experiment.key].nil?
if override_is_alternative?
self.alternative = @options[:override]
if should_store_alternative? && !@user[@experiment.key]
self.alternative.increment_participation
end
elsif @options[:disabled] || Split.configuration.disabled?
self.alternative = @experiment.control
elsif @experiment.has_winner?
self.alternative = @experiment.winner
else
cleanup_old_versions
if exclude_user?
self.alternative = @experiment.control
else
self.alternative = @user[@experiment.key]
if alternative.nil?
if @experiment.cohorting_disabled?
self.alternative = @experiment.control
else
self.alternative = @experiment.next_alternative
# Increment the number of participants since we are actually choosing a new alternative
self.alternative.increment_participation
run_callback context, Split.configuration.on_trial_choose
end
end
end
end
new_participant_and_cohorting_disabled = new_participant && @experiment.cohorting_disabled?
@user[@experiment.key] = alternative.name unless @experiment.has_winner? || !should_store_alternative? || new_participant_and_cohorting_disabled
@alternative_chosen = true
run_callback context, Split.configuration.on_trial unless @options[:disabled] || Split.configuration.disabled? || new_participant_and_cohorting_disabled
alternative
end
private
def run_callback(context, callback_name)
context.send(callback_name, self) if callback_name && context.respond_to?(callback_name, true)
end
def override_is_alternative?
@experiment.alternatives.map(&:name).include?(@options[:override])
end
def should_store_alternative?
if @options[:override] || @options[:disabled]
Split.configuration.store_override
else
!exclude_user?
end
end
def cleanup_old_versions
if @experiment.version > 0
@user.cleanup_old_versions!(@experiment)
end
end
def exclude_user?
@options[:exclude] || @experiment.start_time.nil? || @user.max_experiments_reached?(@experiment.key)
end
end
end
<MSG> Fix warning: method redefined; discarding old metadata
<DFF> @@ -2,7 +2,7 @@
module Split
class Trial
attr_accessor :experiment
- attr_accessor :metadata
+ attr_writer :metadata
def initialize(attrs = {})
self.experiment = attrs.delete(:experiment)
| 1 | Fix warning: method redefined; discarding old metadata | 1 | .rb | rb | mit | splitrb/split |
10070862 | <NME> index.ts
<BEF> ///<reference path="../typings/angularjs/angular.d.ts"/>
import { smButtonModule } from './elements/button/button';
import { smRatingModule } from './modules/rating/rating';
((): void => {
'use strict';
angular
.module('semantic.ui', [
smButtonModule.name,
smRatingModule.name
]);
})();
<MSG> refactor(elements): Refactor sm-divider component to TS
<DFF> @@ -2,6 +2,7 @@
import { smButtonModule } from './elements/button/button';
import { smRatingModule } from './modules/rating/rating';
+import { smDividerModule } from './elements/divider/divider';
((): void => {
'use strict';
@@ -9,7 +10,8 @@ import { smRatingModule } from './modules/rating/rating';
angular
.module('semantic.ui', [
smButtonModule.name,
- smRatingModule.name
+ smRatingModule.name,
+ smDividerModule.name
]);
})();
| 3 | refactor(elements): Refactor sm-divider component to TS | 1 | .ts | ts | mit | Semantic-Org/Semantic-UI-Angular |
10070863 | <NME> index.ts
<BEF> ///<reference path="../typings/angularjs/angular.d.ts"/>
import { smButtonModule } from './elements/button/button';
import { smRatingModule } from './modules/rating/rating';
((): void => {
'use strict';
angular
.module('semantic.ui', [
smButtonModule.name,
smRatingModule.name
]);
})();
<MSG> refactor(elements): Refactor sm-divider component to TS
<DFF> @@ -2,6 +2,7 @@
import { smButtonModule } from './elements/button/button';
import { smRatingModule } from './modules/rating/rating';
+import { smDividerModule } from './elements/divider/divider';
((): void => {
'use strict';
@@ -9,7 +10,8 @@ import { smRatingModule } from './modules/rating/rating';
angular
.module('semantic.ui', [
smButtonModule.name,
- smRatingModule.name
+ smRatingModule.name,
+ smDividerModule.name
]);
})();
| 3 | refactor(elements): Refactor sm-divider component to TS | 1 | .ts | ts | mit | Semantic-Org/Semantic-UI-Angular |
10070864 | <NME> index.ts
<BEF> ///<reference path="../typings/angularjs/angular.d.ts"/>
import { smButtonModule } from './elements/button/button';
import { smRatingModule } from './modules/rating/rating';
((): void => {
'use strict';
angular
.module('semantic.ui', [
smButtonModule.name,
smRatingModule.name
]);
})();
<MSG> refactor(elements): Refactor sm-divider component to TS
<DFF> @@ -2,6 +2,7 @@
import { smButtonModule } from './elements/button/button';
import { smRatingModule } from './modules/rating/rating';
+import { smDividerModule } from './elements/divider/divider';
((): void => {
'use strict';
@@ -9,7 +10,8 @@ import { smRatingModule } from './modules/rating/rating';
angular
.module('semantic.ui', [
smButtonModule.name,
- smRatingModule.name
+ smRatingModule.name,
+ smDividerModule.name
]);
})();
| 3 | refactor(elements): Refactor sm-divider component to TS | 1 | .ts | ts | mit | Semantic-Org/Semantic-UI-Angular |
10070865 | <NME> experiment_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "time"
describe Split::Experiment do
def new_experiment(goals = [])
Split::Experiment.new("link_color", alternatives: ["blue", "red", "green"], goals: goals)
end
def alternative(color)
Split::Alternative.new(color, "link_color")
end
let(:experiment) { new_experiment }
let(:blue) { alternative("blue") }
let(:green) { alternative("green") }
context "with an experiment" do
let(:experiment) { Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"]) }
it "should have a name" do
expect(experiment.name).to eq("basket_text")
end
it "should have alternatives" do
expect(experiment.alternatives.length).to be 2
end
it "should have alternatives with correct names" do
expect(experiment.alternatives.collect { |a| a.name }).to eq(["Basket", "Cart"])
end
it "should be resettable by default" do
expect(experiment.resettable).to be_truthy
end
it "should save to redis" do
experiment.save
expect(Split.redis.exists?("basket_text")).to be true
end
it "should save the start time to redis" do
experiment_start_time = Time.at(1372167761)
expect(Time).to receive(:now).and_return(experiment_start_time)
experiment.save
expect(Split::ExperimentCatalog.find("basket_text").start_time).to eq(experiment_start_time)
end
it "should not save the start time to redis when start_manually is enabled" do
expect(Split.configuration).to receive(:start_manually).and_return(true)
experiment.save
expect(Split::ExperimentCatalog.find("basket_text").start_time).to be_nil
end
it "should save the selected algorithm to redis" do
experiment_algorithm = Split::Algorithms::Whiplash
experiment.algorithm = experiment_algorithm
experiment.save
expect(Split::ExperimentCatalog.find("basket_text").algorithm).to eq(experiment_algorithm)
end
it "should handle having a start time stored as a string" do
experiment_start_time = Time.parse("Sat Mar 03 14:01:03")
expect(Time).to receive(:now).twice.and_return(experiment_start_time)
experiment.save
Split.redis.hset(:experiment_start_times, experiment.name, experiment_start_time.to_s)
expect(Split::ExperimentCatalog.find("basket_text").start_time).to eq(experiment_start_time)
end
it "should handle not having a start time" do
experiment_start_time = Time.parse("Sat Mar 03 14:01:03")
expect(Time).to receive(:now).and_return(experiment_start_time)
experiment.save
Split.redis.hdel(:experiment_start_times, experiment.name)
expect(Split::ExperimentCatalog.find("basket_text").start_time).to be_nil
end
it "should not create duplicates when saving multiple times" do
experiment.save
experiment.save
expect(Split.redis.exists?("basket_text")).to be true
expect(Split.redis.lrange("basket_text", 0, -1)).to eq(['{"Basket":1}', '{"Cart":1}'])
end
describe "new record?" do
it "should know if it hasn't been saved yet" do
expect(experiment.new_record?).to be_truthy
end
it "should know if it has been saved yet" do
experiment.save
expect(experiment.new_record?).to be_falsey
end
end
describe "control" do
it "should be the first alternative" do
experiment.save
expect(experiment.control.name).to eq("Basket")
end
end
end
describe "initialization" do
it "should set the algorithm when passed as an option to the initializer" do
experiment = Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], algorithm: Split::Algorithms::Whiplash)
expect(experiment.algorithm).to eq(Split::Algorithms::Whiplash)
end
it "should be possible to make an experiment not resettable" do
experiment = Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], resettable: false)
expect(experiment.resettable).to be_falsey
end
context "from configuration" do
let(:experiment_name) { :my_experiment }
let(:experiments) do
{
experiment_name => {
alternatives: ["Control Opt", "Alt one"]
}
}
end
before { Split.configuration.experiments = experiments }
it "assigns default values to the experiment" do
expect(Split::Experiment.new(experiment_name).resettable).to eq(true)
end
end
end
describe "persistent configuration" do
it "should persist resettable in redis" do
experiment = Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], resettable: false)
experiment.save
e = Split::ExperimentCatalog.find("basket_text")
expect(e).to eq(experiment)
expect(e.resettable).to be_falsey
end
describe "#metadata" do
let(:experiment) { Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], algorithm: Split::Algorithms::Whiplash, metadata: meta) }
let(:meta) { { a: "b" } }
before do
experiment.save
end
it "should delete the key when metadata is removed" do
experiment.metadata = nil
experiment.save
expect(Split.redis.exists?(experiment.metadata_key)).to be_falsey
end
context "simple hash" do
let(:meta) { { "basket" => "a", "cart" => "b" } }
it "should persist metadata in redis" do
e = Split::ExperimentCatalog.find("basket_text")
expect(e).to eq(experiment)
expect(e.metadata).to eq(meta)
end
end
context "nested hash" do
let(:meta) { { "basket" => { "one" => "two" }, "cart" => "b" } }
it "should persist metadata in redis" do
e = Split::ExperimentCatalog.find("basket_text")
expect(e).to eq(experiment)
expect(e.metadata).to eq(meta)
end
end
end
it "should persist algorithm in redis" do
experiment = Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], algorithm: Split::Algorithms::Whiplash)
experiment.save
e = Split::ExperimentCatalog.find("basket_text")
expect(e).to eq(experiment)
expect(e.algorithm).to eq(Split::Algorithms::Whiplash)
end
it "should persist a new experiment in redis, that does not exist in the configuration file" do
experiment = Split::Experiment.new("foobar", alternatives: ["tra", "la"], algorithm: Split::Algorithms::Whiplash)
experiment.save
e = Split::ExperimentCatalog.find("foobar")
expect(e).to eq(experiment)
expect(e.alternatives.collect { |a| a.name }).to eq(["tra", "la"])
end
end
describe "deleting" do
it "should delete itself" do
experiment = Split::Experiment.new("basket_text", alternatives: [ "Basket", "Cart"])
experiment.save
experiment.delete
expect(Split.redis.exists?("link_color")).to be false
expect(Split::ExperimentCatalog.find("link_color")).to be_nil
end
it "should increment the version" do
expect(experiment.version).to eq(0)
experiment.delete
expect(experiment.version).to eq(1)
end
it "should call the on_experiment_delete hook" do
expect(Split.configuration.on_experiment_delete).to receive(:call)
experiment.delete
end
it "should call the on_before_experiment_delete hook" do
expect(Split.configuration.on_before_experiment_delete).to receive(:call)
experiment.delete
end
it "should reset the start time if the experiment should be manually started" do
Split.configuration.start_manually = true
experiment.start
experiment.delete
expect(experiment.start_time).to be_nil
end
it "should default cohorting back to false" do
experiment.disable_cohorting
expect(experiment.cohorting_disabled?).to eq(true)
experiment.delete
expect(experiment.cohorting_disabled?).to eq(false)
end
end
describe "winner" do
it "should have no winner initially" do
expect(experiment.winner).to be_nil
end
end
describe "winner=" do
it "should allow you to specify a winner" do
experiment.save
experiment.winner = "red"
expect(experiment.winner.name).to eq("red")
end
it "should call the on_experiment_winner_choose hook" do
expect(Split.configuration.on_experiment_winner_choose).to receive(:call)
experiment.winner = "green"
end
context "when has_winner state is memoized" do
before { expect(experiment).to_not have_winner }
it "should keep has_winner state consistent" do
experiment.winner = "red"
expect(experiment).to have_winner
end
end
end
describe "reset_winner" do
before { experiment.winner = "green" }
it "should reset the winner" do
experiment.reset_winner
expect(experiment.winner).to be_nil
end
context "when has_winner state is memoized" do
before { expect(experiment).to have_winner }
it "should keep has_winner state consistent" do
experiment.reset_winner
expect(experiment).to_not have_winner
end
end
end
describe "has_winner?" do
context "with winner" do
before { experiment.winner = "red" }
it "returns true" do
expect(experiment).to have_winner
end
end
context "without winner" do
it "returns false" do
expect(experiment).to_not have_winner
end
end
it "memoizes has_winner state" do
expect(experiment).to receive(:winner).once
expect(experiment).to_not have_winner
expect(experiment).to_not have_winner
end
end
describe "reset" do
let(:reset_manually) { false }
before do
allow(Split.configuration).to receive(:reset_manually).and_return(reset_manually)
experiment.save
green.increment_participation
green.increment_participation
end
it "should reset all alternatives" do
experiment.winner = "green"
expect(experiment.next_alternative.name).to eq("green")
green.increment_participation
experiment.reset
expect(green.participant_count).to eq(0)
expect(green.completed_count).to eq(0)
end
it "should reset the winner" do
experiment.winner = "green"
expect(experiment.next_alternative.name).to eq("green")
green.increment_participation
experiment.reset
expect(experiment.winner).to be_nil
end
it "should increment the version" do
expect(experiment.version).to eq(0)
experiment.reset
expect(experiment.version).to eq(1)
end
it "should call the on_experiment_reset hook" do
expect(Split.configuration.on_experiment_reset).to receive(:call)
experiment.reset
end
it "should call the on_before_experiment_reset hook" do
expect(Split.configuration.on_before_experiment_reset).to receive(:call)
experiment.reset
end
end
describe "algorithm" do
let(:experiment) { Split::ExperimentCatalog.find_or_create("link_color", "blue", "red", "green") }
it "should use the default algorithm if none is specified" do
expect(experiment.algorithm).to eq(Split.configuration.algorithm)
end
it "should use the user specified algorithm for this experiment if specified" do
experiment.algorithm = Split::Algorithms::Whiplash
expect(experiment.algorithm).to eq(Split::Algorithms::Whiplash)
end
end
end
end
end
describe "#cohorting_disabled?" do
it "returns false when nothing has been configured" do
expect(experiment.cohorting_disabled?).to eq false
end
it "returns true when enable_cohorting is performed" do
experiment.enable_cohorting
expect(experiment.cohorting_disabled?).to eq false
end
it "returns false when nothing has been configured" do
experiment.disable_cohorting
expect(experiment.cohorting_disabled?).to eq true
end
end
describe "changing an existing experiment" do
def same_but_different_alternative
Split::ExperimentCatalog.find_or_create("link_color", "blue", "yellow", "orange")
end
it "should reset an experiment if it is loaded with different alternatives" do
experiment.save
blue.participant_count = 5
same_experiment = same_but_different_alternative
expect(same_experiment.alternatives.map(&:name)).to eq(["blue", "yellow", "orange"])
expect(blue.participant_count).to eq(0)
end
it "should only reset once" do
experiment.save
expect(experiment.version).to eq(0)
same_experiment = same_but_different_alternative
expect(same_experiment.version).to eq(1)
same_experiment_again = same_but_different_alternative
expect(same_experiment_again.version).to eq(1)
end
context "when metadata is changed" do
it "should increase version" do
experiment.save
experiment.metadata = { "foo" => "bar" }
expect { experiment.save }.to change { experiment.version }.by(1)
end
it "does not increase version" do
experiment.metadata = nil
experiment.save
expect { experiment.save }.to change { experiment.version }.by(0)
end
end
context "when experiment configuration is changed" do
let(:reset_manually) { false }
before do
experiment.save
allow(Split.configuration).to receive(:reset_manually).and_return(reset_manually)
green.increment_participation
green.increment_participation
experiment.set_alternatives_and_options(alternatives: %w(blue red green zip),
goals: %w(purchase))
experiment.save
end
it "resets all alternatives" do
expect(green.participant_count).to eq(0)
expect(green.completed_count).to eq(0)
end
context "when reset_manually is set" do
let(:reset_manually) { true }
it "does not reset alternatives" do
expect(green.participant_count).to eq(2)
expect(green.completed_count).to eq(0)
end
end
end
end
describe "alternatives passed as non-strings" do
it "should throw an exception if an alternative is passed that is not a string" do
expect { Split::ExperimentCatalog.find_or_create("link_color", :blue, :red) }.to raise_error(ArgumentError)
expect { Split::ExperimentCatalog.find_or_create("link_enabled", true, false) }.to raise_error(ArgumentError)
end
end
describe "specifying weights" do
let(:experiment_with_weight) {
Split::ExperimentCatalog.find_or_create("link_color", { "blue" => 1 }, { "red" => 2 })
}
it "should work for a new experiment" do
expect(experiment_with_weight.alternatives.map(&:weight)).to eq([1, 2])
end
it "should work for an existing experiment" do
experiment.save
expect(experiment_with_weight.alternatives.map(&:weight)).to eq([1, 2])
end
end
describe "specifying goals" do
let(:experiment) {
new_experiment(["purchase"])
}
context "saving experiment" do
let(:same_but_different_goals) { Split::ExperimentCatalog.find_or_create({ "link_color" => ["purchase", "refund"] }, "blue", "red", "green") }
before { experiment.save }
it "can find existing experiment" do
expect(Split::ExperimentCatalog.find("link_color").name).to eq("link_color")
end
it "should reset an experiment if it is loaded with different goals" do
same_but_different_goals
expect(Split::ExperimentCatalog.find("link_color").goals).to eq(["purchase", "refund"])
end
end
it "should have goals" do
expect(experiment.goals).to eq(["purchase"])
end
context "find or create experiment" do
it "should have correct goals" do
experiment = Split::ExperimentCatalog.find_or_create({ "link_color3" => ["purchase", "refund"] }, "blue", "red", "green")
expect(experiment.goals).to eq(["purchase", "refund"])
experiment = Split::ExperimentCatalog.find_or_create("link_color3", "blue", "red", "green")
expect(experiment.goals).to eq([])
end
end
end
describe "beta probability calculation" do
it "should return a hash with the probability of each alternative being the best" do
experiment = Split::ExperimentCatalog.find_or_create("mathematicians", "bernoulli", "poisson", "lagrange")
experiment.calc_winning_alternatives
expect(experiment.alternative_probabilities).not_to be_nil
end
it "should return between 46% and 54% probability for an experiment with 2 alternatives and no data" do
experiment = Split::ExperimentCatalog.find_or_create("scientists", "einstein", "bohr")
experiment.calc_winning_alternatives
expect(experiment.alternatives[0].p_winner).to be_within(0.04).of(0.50)
end
it "should calculate the probability of being the winning alternative separately for each goal", skip: true do
experiment = Split::ExperimentCatalog.find_or_create({ "link_color3" => ["purchase", "refund"] }, "blue", "red", "green")
goal1 = experiment.goals[0]
goal2 = experiment.goals[1]
experiment.alternatives.each do |alternative|
alternative.participant_count = 50
alternative.set_completed_count(10, goal1)
alternative.set_completed_count(15+rand(30), goal2)
end
experiment.calc_winning_alternatives
alt = experiment.alternatives[0]
p_goal1 = alt.p_winner(goal1)
p_goal2 = alt.p_winner(goal2)
expect(p_goal1).not_to be_within(0.04).of(p_goal2)
end
it "should return nil and not re-calculate probabilities if they have already been calculated today" do
experiment = Split::ExperimentCatalog.find_or_create({ "link_color3" => ["purchase", "refund"] }, "blue", "red", "green")
expect(experiment.calc_winning_alternatives).not_to be nil
expect(experiment.calc_winning_alternatives).to be nil
end
end
end
<MSG> Merge pull request #266 from caser/beta-probabilities
Beta probabilities
<DFF> @@ -377,4 +377,34 @@ describe Split::Experiment do
end
end
+ describe "beta probability calculation" do
+ it "should return a hash with the probability of each alternative being the best" do
+ experiment = Split::Experiment.find_or_create('mathematicians', 'bernoulli', 'poisson', 'lagrange')
+ experiment.calc_winning_alternatives
+ experiment.alternative_probabilities.should_not be_nil
+ end
+
+ it "should return between 46% and 54% probability for an experiment with 2 alternatives and no data" do
+ experiment = Split::Experiment.find_or_create('scientists', 'einstein', 'bohr')
+ experiment.calc_winning_alternatives
+ experiment.alternatives[0].p_winner.should be_within(0.04).of(0.50)
+ end
+
+ it "should calculate the probability of being the winning alternative separately for each goal" do
+ experiment = Split::Experiment.find_or_create({'link_color3' => ["purchase", "refund"]}, 'blue', 'red', 'green')
+ goal1 = experiment.goals[0]
+ goal2 = experiment.goals[1]
+ experiment.alternatives.each do |alternative|
+ alternative.participant_count = 50
+ alternative.set_completed_count(10, goal1)
+ alternative.set_completed_count(10+rand(30), goal2)
+ end
+ experiment.calc_winning_alternatives
+ alt = experiment.alternatives[0]
+ p_goal1 = alt.p_winner(goal1)
+ p_goal2 = alt.p_winner(goal2)
+ p_goal1.should_not be_within(0.04).of(p_goal2)
+ end
+ end
+
end
| 30 | Merge pull request #266 from caser/beta-probabilities | 0 | .rb | rb | mit | splitrb/split |
10070866 | <NME> experiment_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "time"
describe Split::Experiment do
def new_experiment(goals = [])
Split::Experiment.new("link_color", alternatives: ["blue", "red", "green"], goals: goals)
end
def alternative(color)
Split::Alternative.new(color, "link_color")
end
let(:experiment) { new_experiment }
let(:blue) { alternative("blue") }
let(:green) { alternative("green") }
context "with an experiment" do
let(:experiment) { Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"]) }
it "should have a name" do
expect(experiment.name).to eq("basket_text")
end
it "should have alternatives" do
expect(experiment.alternatives.length).to be 2
end
it "should have alternatives with correct names" do
expect(experiment.alternatives.collect { |a| a.name }).to eq(["Basket", "Cart"])
end
it "should be resettable by default" do
expect(experiment.resettable).to be_truthy
end
it "should save to redis" do
experiment.save
expect(Split.redis.exists?("basket_text")).to be true
end
it "should save the start time to redis" do
experiment_start_time = Time.at(1372167761)
expect(Time).to receive(:now).and_return(experiment_start_time)
experiment.save
expect(Split::ExperimentCatalog.find("basket_text").start_time).to eq(experiment_start_time)
end
it "should not save the start time to redis when start_manually is enabled" do
expect(Split.configuration).to receive(:start_manually).and_return(true)
experiment.save
expect(Split::ExperimentCatalog.find("basket_text").start_time).to be_nil
end
it "should save the selected algorithm to redis" do
experiment_algorithm = Split::Algorithms::Whiplash
experiment.algorithm = experiment_algorithm
experiment.save
expect(Split::ExperimentCatalog.find("basket_text").algorithm).to eq(experiment_algorithm)
end
it "should handle having a start time stored as a string" do
experiment_start_time = Time.parse("Sat Mar 03 14:01:03")
expect(Time).to receive(:now).twice.and_return(experiment_start_time)
experiment.save
Split.redis.hset(:experiment_start_times, experiment.name, experiment_start_time.to_s)
expect(Split::ExperimentCatalog.find("basket_text").start_time).to eq(experiment_start_time)
end
it "should handle not having a start time" do
experiment_start_time = Time.parse("Sat Mar 03 14:01:03")
expect(Time).to receive(:now).and_return(experiment_start_time)
experiment.save
Split.redis.hdel(:experiment_start_times, experiment.name)
expect(Split::ExperimentCatalog.find("basket_text").start_time).to be_nil
end
it "should not create duplicates when saving multiple times" do
experiment.save
experiment.save
expect(Split.redis.exists?("basket_text")).to be true
expect(Split.redis.lrange("basket_text", 0, -1)).to eq(['{"Basket":1}', '{"Cart":1}'])
end
describe "new record?" do
it "should know if it hasn't been saved yet" do
expect(experiment.new_record?).to be_truthy
end
it "should know if it has been saved yet" do
experiment.save
expect(experiment.new_record?).to be_falsey
end
end
describe "control" do
it "should be the first alternative" do
experiment.save
expect(experiment.control.name).to eq("Basket")
end
end
end
describe "initialization" do
it "should set the algorithm when passed as an option to the initializer" do
experiment = Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], algorithm: Split::Algorithms::Whiplash)
expect(experiment.algorithm).to eq(Split::Algorithms::Whiplash)
end
it "should be possible to make an experiment not resettable" do
experiment = Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], resettable: false)
expect(experiment.resettable).to be_falsey
end
context "from configuration" do
let(:experiment_name) { :my_experiment }
let(:experiments) do
{
experiment_name => {
alternatives: ["Control Opt", "Alt one"]
}
}
end
before { Split.configuration.experiments = experiments }
it "assigns default values to the experiment" do
expect(Split::Experiment.new(experiment_name).resettable).to eq(true)
end
end
end
describe "persistent configuration" do
it "should persist resettable in redis" do
experiment = Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], resettable: false)
experiment.save
e = Split::ExperimentCatalog.find("basket_text")
expect(e).to eq(experiment)
expect(e.resettable).to be_falsey
end
describe "#metadata" do
let(:experiment) { Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], algorithm: Split::Algorithms::Whiplash, metadata: meta) }
let(:meta) { { a: "b" } }
before do
experiment.save
end
it "should delete the key when metadata is removed" do
experiment.metadata = nil
experiment.save
expect(Split.redis.exists?(experiment.metadata_key)).to be_falsey
end
context "simple hash" do
let(:meta) { { "basket" => "a", "cart" => "b" } }
it "should persist metadata in redis" do
e = Split::ExperimentCatalog.find("basket_text")
expect(e).to eq(experiment)
expect(e.metadata).to eq(meta)
end
end
context "nested hash" do
let(:meta) { { "basket" => { "one" => "two" }, "cart" => "b" } }
it "should persist metadata in redis" do
e = Split::ExperimentCatalog.find("basket_text")
expect(e).to eq(experiment)
expect(e.metadata).to eq(meta)
end
end
end
it "should persist algorithm in redis" do
experiment = Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], algorithm: Split::Algorithms::Whiplash)
experiment.save
e = Split::ExperimentCatalog.find("basket_text")
expect(e).to eq(experiment)
expect(e.algorithm).to eq(Split::Algorithms::Whiplash)
end
it "should persist a new experiment in redis, that does not exist in the configuration file" do
experiment = Split::Experiment.new("foobar", alternatives: ["tra", "la"], algorithm: Split::Algorithms::Whiplash)
experiment.save
e = Split::ExperimentCatalog.find("foobar")
expect(e).to eq(experiment)
expect(e.alternatives.collect { |a| a.name }).to eq(["tra", "la"])
end
end
describe "deleting" do
it "should delete itself" do
experiment = Split::Experiment.new("basket_text", alternatives: [ "Basket", "Cart"])
experiment.save
experiment.delete
expect(Split.redis.exists?("link_color")).to be false
expect(Split::ExperimentCatalog.find("link_color")).to be_nil
end
it "should increment the version" do
expect(experiment.version).to eq(0)
experiment.delete
expect(experiment.version).to eq(1)
end
it "should call the on_experiment_delete hook" do
expect(Split.configuration.on_experiment_delete).to receive(:call)
experiment.delete
end
it "should call the on_before_experiment_delete hook" do
expect(Split.configuration.on_before_experiment_delete).to receive(:call)
experiment.delete
end
it "should reset the start time if the experiment should be manually started" do
Split.configuration.start_manually = true
experiment.start
experiment.delete
expect(experiment.start_time).to be_nil
end
it "should default cohorting back to false" do
experiment.disable_cohorting
expect(experiment.cohorting_disabled?).to eq(true)
experiment.delete
expect(experiment.cohorting_disabled?).to eq(false)
end
end
describe "winner" do
it "should have no winner initially" do
expect(experiment.winner).to be_nil
end
end
describe "winner=" do
it "should allow you to specify a winner" do
experiment.save
experiment.winner = "red"
expect(experiment.winner.name).to eq("red")
end
it "should call the on_experiment_winner_choose hook" do
expect(Split.configuration.on_experiment_winner_choose).to receive(:call)
experiment.winner = "green"
end
context "when has_winner state is memoized" do
before { expect(experiment).to_not have_winner }
it "should keep has_winner state consistent" do
experiment.winner = "red"
expect(experiment).to have_winner
end
end
end
describe "reset_winner" do
before { experiment.winner = "green" }
it "should reset the winner" do
experiment.reset_winner
expect(experiment.winner).to be_nil
end
context "when has_winner state is memoized" do
before { expect(experiment).to have_winner }
it "should keep has_winner state consistent" do
experiment.reset_winner
expect(experiment).to_not have_winner
end
end
end
describe "has_winner?" do
context "with winner" do
before { experiment.winner = "red" }
it "returns true" do
expect(experiment).to have_winner
end
end
context "without winner" do
it "returns false" do
expect(experiment).to_not have_winner
end
end
it "memoizes has_winner state" do
expect(experiment).to receive(:winner).once
expect(experiment).to_not have_winner
expect(experiment).to_not have_winner
end
end
describe "reset" do
let(:reset_manually) { false }
before do
allow(Split.configuration).to receive(:reset_manually).and_return(reset_manually)
experiment.save
green.increment_participation
green.increment_participation
end
it "should reset all alternatives" do
experiment.winner = "green"
expect(experiment.next_alternative.name).to eq("green")
green.increment_participation
experiment.reset
expect(green.participant_count).to eq(0)
expect(green.completed_count).to eq(0)
end
it "should reset the winner" do
experiment.winner = "green"
expect(experiment.next_alternative.name).to eq("green")
green.increment_participation
experiment.reset
expect(experiment.winner).to be_nil
end
it "should increment the version" do
expect(experiment.version).to eq(0)
experiment.reset
expect(experiment.version).to eq(1)
end
it "should call the on_experiment_reset hook" do
expect(Split.configuration.on_experiment_reset).to receive(:call)
experiment.reset
end
it "should call the on_before_experiment_reset hook" do
expect(Split.configuration.on_before_experiment_reset).to receive(:call)
experiment.reset
end
end
describe "algorithm" do
let(:experiment) { Split::ExperimentCatalog.find_or_create("link_color", "blue", "red", "green") }
it "should use the default algorithm if none is specified" do
expect(experiment.algorithm).to eq(Split.configuration.algorithm)
end
it "should use the user specified algorithm for this experiment if specified" do
experiment.algorithm = Split::Algorithms::Whiplash
expect(experiment.algorithm).to eq(Split::Algorithms::Whiplash)
end
end
end
end
end
describe "#cohorting_disabled?" do
it "returns false when nothing has been configured" do
expect(experiment.cohorting_disabled?).to eq false
end
it "returns true when enable_cohorting is performed" do
experiment.enable_cohorting
expect(experiment.cohorting_disabled?).to eq false
end
it "returns false when nothing has been configured" do
experiment.disable_cohorting
expect(experiment.cohorting_disabled?).to eq true
end
end
describe "changing an existing experiment" do
def same_but_different_alternative
Split::ExperimentCatalog.find_or_create("link_color", "blue", "yellow", "orange")
end
it "should reset an experiment if it is loaded with different alternatives" do
experiment.save
blue.participant_count = 5
same_experiment = same_but_different_alternative
expect(same_experiment.alternatives.map(&:name)).to eq(["blue", "yellow", "orange"])
expect(blue.participant_count).to eq(0)
end
it "should only reset once" do
experiment.save
expect(experiment.version).to eq(0)
same_experiment = same_but_different_alternative
expect(same_experiment.version).to eq(1)
same_experiment_again = same_but_different_alternative
expect(same_experiment_again.version).to eq(1)
end
context "when metadata is changed" do
it "should increase version" do
experiment.save
experiment.metadata = { "foo" => "bar" }
expect { experiment.save }.to change { experiment.version }.by(1)
end
it "does not increase version" do
experiment.metadata = nil
experiment.save
expect { experiment.save }.to change { experiment.version }.by(0)
end
end
context "when experiment configuration is changed" do
let(:reset_manually) { false }
before do
experiment.save
allow(Split.configuration).to receive(:reset_manually).and_return(reset_manually)
green.increment_participation
green.increment_participation
experiment.set_alternatives_and_options(alternatives: %w(blue red green zip),
goals: %w(purchase))
experiment.save
end
it "resets all alternatives" do
expect(green.participant_count).to eq(0)
expect(green.completed_count).to eq(0)
end
context "when reset_manually is set" do
let(:reset_manually) { true }
it "does not reset alternatives" do
expect(green.participant_count).to eq(2)
expect(green.completed_count).to eq(0)
end
end
end
end
describe "alternatives passed as non-strings" do
it "should throw an exception if an alternative is passed that is not a string" do
expect { Split::ExperimentCatalog.find_or_create("link_color", :blue, :red) }.to raise_error(ArgumentError)
expect { Split::ExperimentCatalog.find_or_create("link_enabled", true, false) }.to raise_error(ArgumentError)
end
end
describe "specifying weights" do
let(:experiment_with_weight) {
Split::ExperimentCatalog.find_or_create("link_color", { "blue" => 1 }, { "red" => 2 })
}
it "should work for a new experiment" do
expect(experiment_with_weight.alternatives.map(&:weight)).to eq([1, 2])
end
it "should work for an existing experiment" do
experiment.save
expect(experiment_with_weight.alternatives.map(&:weight)).to eq([1, 2])
end
end
describe "specifying goals" do
let(:experiment) {
new_experiment(["purchase"])
}
context "saving experiment" do
let(:same_but_different_goals) { Split::ExperimentCatalog.find_or_create({ "link_color" => ["purchase", "refund"] }, "blue", "red", "green") }
before { experiment.save }
it "can find existing experiment" do
expect(Split::ExperimentCatalog.find("link_color").name).to eq("link_color")
end
it "should reset an experiment if it is loaded with different goals" do
same_but_different_goals
expect(Split::ExperimentCatalog.find("link_color").goals).to eq(["purchase", "refund"])
end
end
it "should have goals" do
expect(experiment.goals).to eq(["purchase"])
end
context "find or create experiment" do
it "should have correct goals" do
experiment = Split::ExperimentCatalog.find_or_create({ "link_color3" => ["purchase", "refund"] }, "blue", "red", "green")
expect(experiment.goals).to eq(["purchase", "refund"])
experiment = Split::ExperimentCatalog.find_or_create("link_color3", "blue", "red", "green")
expect(experiment.goals).to eq([])
end
end
end
describe "beta probability calculation" do
it "should return a hash with the probability of each alternative being the best" do
experiment = Split::ExperimentCatalog.find_or_create("mathematicians", "bernoulli", "poisson", "lagrange")
experiment.calc_winning_alternatives
expect(experiment.alternative_probabilities).not_to be_nil
end
it "should return between 46% and 54% probability for an experiment with 2 alternatives and no data" do
experiment = Split::ExperimentCatalog.find_or_create("scientists", "einstein", "bohr")
experiment.calc_winning_alternatives
expect(experiment.alternatives[0].p_winner).to be_within(0.04).of(0.50)
end
it "should calculate the probability of being the winning alternative separately for each goal", skip: true do
experiment = Split::ExperimentCatalog.find_or_create({ "link_color3" => ["purchase", "refund"] }, "blue", "red", "green")
goal1 = experiment.goals[0]
goal2 = experiment.goals[1]
experiment.alternatives.each do |alternative|
alternative.participant_count = 50
alternative.set_completed_count(10, goal1)
alternative.set_completed_count(15+rand(30), goal2)
end
experiment.calc_winning_alternatives
alt = experiment.alternatives[0]
p_goal1 = alt.p_winner(goal1)
p_goal2 = alt.p_winner(goal2)
expect(p_goal1).not_to be_within(0.04).of(p_goal2)
end
it "should return nil and not re-calculate probabilities if they have already been calculated today" do
experiment = Split::ExperimentCatalog.find_or_create({ "link_color3" => ["purchase", "refund"] }, "blue", "red", "green")
expect(experiment.calc_winning_alternatives).not_to be nil
expect(experiment.calc_winning_alternatives).to be nil
end
end
end
<MSG> Merge pull request #266 from caser/beta-probabilities
Beta probabilities
<DFF> @@ -377,4 +377,34 @@ describe Split::Experiment do
end
end
+ describe "beta probability calculation" do
+ it "should return a hash with the probability of each alternative being the best" do
+ experiment = Split::Experiment.find_or_create('mathematicians', 'bernoulli', 'poisson', 'lagrange')
+ experiment.calc_winning_alternatives
+ experiment.alternative_probabilities.should_not be_nil
+ end
+
+ it "should return between 46% and 54% probability for an experiment with 2 alternatives and no data" do
+ experiment = Split::Experiment.find_or_create('scientists', 'einstein', 'bohr')
+ experiment.calc_winning_alternatives
+ experiment.alternatives[0].p_winner.should be_within(0.04).of(0.50)
+ end
+
+ it "should calculate the probability of being the winning alternative separately for each goal" do
+ experiment = Split::Experiment.find_or_create({'link_color3' => ["purchase", "refund"]}, 'blue', 'red', 'green')
+ goal1 = experiment.goals[0]
+ goal2 = experiment.goals[1]
+ experiment.alternatives.each do |alternative|
+ alternative.participant_count = 50
+ alternative.set_completed_count(10, goal1)
+ alternative.set_completed_count(10+rand(30), goal2)
+ end
+ experiment.calc_winning_alternatives
+ alt = experiment.alternatives[0]
+ p_goal1 = alt.p_winner(goal1)
+ p_goal2 = alt.p_winner(goal2)
+ p_goal1.should_not be_within(0.04).of(p_goal2)
+ end
+ end
+
end
| 30 | Merge pull request #266 from caser/beta-probabilities | 0 | .rb | rb | mit | splitrb/split |
10070867 | <NME> experiment_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "time"
describe Split::Experiment do
def new_experiment(goals = [])
Split::Experiment.new("link_color", alternatives: ["blue", "red", "green"], goals: goals)
end
def alternative(color)
Split::Alternative.new(color, "link_color")
end
let(:experiment) { new_experiment }
let(:blue) { alternative("blue") }
let(:green) { alternative("green") }
context "with an experiment" do
let(:experiment) { Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"]) }
it "should have a name" do
expect(experiment.name).to eq("basket_text")
end
it "should have alternatives" do
expect(experiment.alternatives.length).to be 2
end
it "should have alternatives with correct names" do
expect(experiment.alternatives.collect { |a| a.name }).to eq(["Basket", "Cart"])
end
it "should be resettable by default" do
expect(experiment.resettable).to be_truthy
end
it "should save to redis" do
experiment.save
expect(Split.redis.exists?("basket_text")).to be true
end
it "should save the start time to redis" do
experiment_start_time = Time.at(1372167761)
expect(Time).to receive(:now).and_return(experiment_start_time)
experiment.save
expect(Split::ExperimentCatalog.find("basket_text").start_time).to eq(experiment_start_time)
end
it "should not save the start time to redis when start_manually is enabled" do
expect(Split.configuration).to receive(:start_manually).and_return(true)
experiment.save
expect(Split::ExperimentCatalog.find("basket_text").start_time).to be_nil
end
it "should save the selected algorithm to redis" do
experiment_algorithm = Split::Algorithms::Whiplash
experiment.algorithm = experiment_algorithm
experiment.save
expect(Split::ExperimentCatalog.find("basket_text").algorithm).to eq(experiment_algorithm)
end
it "should handle having a start time stored as a string" do
experiment_start_time = Time.parse("Sat Mar 03 14:01:03")
expect(Time).to receive(:now).twice.and_return(experiment_start_time)
experiment.save
Split.redis.hset(:experiment_start_times, experiment.name, experiment_start_time.to_s)
expect(Split::ExperimentCatalog.find("basket_text").start_time).to eq(experiment_start_time)
end
it "should handle not having a start time" do
experiment_start_time = Time.parse("Sat Mar 03 14:01:03")
expect(Time).to receive(:now).and_return(experiment_start_time)
experiment.save
Split.redis.hdel(:experiment_start_times, experiment.name)
expect(Split::ExperimentCatalog.find("basket_text").start_time).to be_nil
end
it "should not create duplicates when saving multiple times" do
experiment.save
experiment.save
expect(Split.redis.exists?("basket_text")).to be true
expect(Split.redis.lrange("basket_text", 0, -1)).to eq(['{"Basket":1}', '{"Cart":1}'])
end
describe "new record?" do
it "should know if it hasn't been saved yet" do
expect(experiment.new_record?).to be_truthy
end
it "should know if it has been saved yet" do
experiment.save
expect(experiment.new_record?).to be_falsey
end
end
describe "control" do
it "should be the first alternative" do
experiment.save
expect(experiment.control.name).to eq("Basket")
end
end
end
describe "initialization" do
it "should set the algorithm when passed as an option to the initializer" do
experiment = Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], algorithm: Split::Algorithms::Whiplash)
expect(experiment.algorithm).to eq(Split::Algorithms::Whiplash)
end
it "should be possible to make an experiment not resettable" do
experiment = Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], resettable: false)
expect(experiment.resettable).to be_falsey
end
context "from configuration" do
let(:experiment_name) { :my_experiment }
let(:experiments) do
{
experiment_name => {
alternatives: ["Control Opt", "Alt one"]
}
}
end
before { Split.configuration.experiments = experiments }
it "assigns default values to the experiment" do
expect(Split::Experiment.new(experiment_name).resettable).to eq(true)
end
end
end
describe "persistent configuration" do
it "should persist resettable in redis" do
experiment = Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], resettable: false)
experiment.save
e = Split::ExperimentCatalog.find("basket_text")
expect(e).to eq(experiment)
expect(e.resettable).to be_falsey
end
describe "#metadata" do
let(:experiment) { Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], algorithm: Split::Algorithms::Whiplash, metadata: meta) }
let(:meta) { { a: "b" } }
before do
experiment.save
end
it "should delete the key when metadata is removed" do
experiment.metadata = nil
experiment.save
expect(Split.redis.exists?(experiment.metadata_key)).to be_falsey
end
context "simple hash" do
let(:meta) { { "basket" => "a", "cart" => "b" } }
it "should persist metadata in redis" do
e = Split::ExperimentCatalog.find("basket_text")
expect(e).to eq(experiment)
expect(e.metadata).to eq(meta)
end
end
context "nested hash" do
let(:meta) { { "basket" => { "one" => "two" }, "cart" => "b" } }
it "should persist metadata in redis" do
e = Split::ExperimentCatalog.find("basket_text")
expect(e).to eq(experiment)
expect(e.metadata).to eq(meta)
end
end
end
it "should persist algorithm in redis" do
experiment = Split::Experiment.new("basket_text", alternatives: ["Basket", "Cart"], algorithm: Split::Algorithms::Whiplash)
experiment.save
e = Split::ExperimentCatalog.find("basket_text")
expect(e).to eq(experiment)
expect(e.algorithm).to eq(Split::Algorithms::Whiplash)
end
it "should persist a new experiment in redis, that does not exist in the configuration file" do
experiment = Split::Experiment.new("foobar", alternatives: ["tra", "la"], algorithm: Split::Algorithms::Whiplash)
experiment.save
e = Split::ExperimentCatalog.find("foobar")
expect(e).to eq(experiment)
expect(e.alternatives.collect { |a| a.name }).to eq(["tra", "la"])
end
end
describe "deleting" do
it "should delete itself" do
experiment = Split::Experiment.new("basket_text", alternatives: [ "Basket", "Cart"])
experiment.save
experiment.delete
expect(Split.redis.exists?("link_color")).to be false
expect(Split::ExperimentCatalog.find("link_color")).to be_nil
end
it "should increment the version" do
expect(experiment.version).to eq(0)
experiment.delete
expect(experiment.version).to eq(1)
end
it "should call the on_experiment_delete hook" do
expect(Split.configuration.on_experiment_delete).to receive(:call)
experiment.delete
end
it "should call the on_before_experiment_delete hook" do
expect(Split.configuration.on_before_experiment_delete).to receive(:call)
experiment.delete
end
it "should reset the start time if the experiment should be manually started" do
Split.configuration.start_manually = true
experiment.start
experiment.delete
expect(experiment.start_time).to be_nil
end
it "should default cohorting back to false" do
experiment.disable_cohorting
expect(experiment.cohorting_disabled?).to eq(true)
experiment.delete
expect(experiment.cohorting_disabled?).to eq(false)
end
end
describe "winner" do
it "should have no winner initially" do
expect(experiment.winner).to be_nil
end
end
describe "winner=" do
it "should allow you to specify a winner" do
experiment.save
experiment.winner = "red"
expect(experiment.winner.name).to eq("red")
end
it "should call the on_experiment_winner_choose hook" do
expect(Split.configuration.on_experiment_winner_choose).to receive(:call)
experiment.winner = "green"
end
context "when has_winner state is memoized" do
before { expect(experiment).to_not have_winner }
it "should keep has_winner state consistent" do
experiment.winner = "red"
expect(experiment).to have_winner
end
end
end
describe "reset_winner" do
before { experiment.winner = "green" }
it "should reset the winner" do
experiment.reset_winner
expect(experiment.winner).to be_nil
end
context "when has_winner state is memoized" do
before { expect(experiment).to have_winner }
it "should keep has_winner state consistent" do
experiment.reset_winner
expect(experiment).to_not have_winner
end
end
end
describe "has_winner?" do
context "with winner" do
before { experiment.winner = "red" }
it "returns true" do
expect(experiment).to have_winner
end
end
context "without winner" do
it "returns false" do
expect(experiment).to_not have_winner
end
end
it "memoizes has_winner state" do
expect(experiment).to receive(:winner).once
expect(experiment).to_not have_winner
expect(experiment).to_not have_winner
end
end
describe "reset" do
let(:reset_manually) { false }
before do
allow(Split.configuration).to receive(:reset_manually).and_return(reset_manually)
experiment.save
green.increment_participation
green.increment_participation
end
it "should reset all alternatives" do
experiment.winner = "green"
expect(experiment.next_alternative.name).to eq("green")
green.increment_participation
experiment.reset
expect(green.participant_count).to eq(0)
expect(green.completed_count).to eq(0)
end
it "should reset the winner" do
experiment.winner = "green"
expect(experiment.next_alternative.name).to eq("green")
green.increment_participation
experiment.reset
expect(experiment.winner).to be_nil
end
it "should increment the version" do
expect(experiment.version).to eq(0)
experiment.reset
expect(experiment.version).to eq(1)
end
it "should call the on_experiment_reset hook" do
expect(Split.configuration.on_experiment_reset).to receive(:call)
experiment.reset
end
it "should call the on_before_experiment_reset hook" do
expect(Split.configuration.on_before_experiment_reset).to receive(:call)
experiment.reset
end
end
describe "algorithm" do
let(:experiment) { Split::ExperimentCatalog.find_or_create("link_color", "blue", "red", "green") }
it "should use the default algorithm if none is specified" do
expect(experiment.algorithm).to eq(Split.configuration.algorithm)
end
it "should use the user specified algorithm for this experiment if specified" do
experiment.algorithm = Split::Algorithms::Whiplash
expect(experiment.algorithm).to eq(Split::Algorithms::Whiplash)
end
end
end
end
end
describe "#cohorting_disabled?" do
it "returns false when nothing has been configured" do
expect(experiment.cohorting_disabled?).to eq false
end
it "returns true when enable_cohorting is performed" do
experiment.enable_cohorting
expect(experiment.cohorting_disabled?).to eq false
end
it "returns false when nothing has been configured" do
experiment.disable_cohorting
expect(experiment.cohorting_disabled?).to eq true
end
end
describe "changing an existing experiment" do
def same_but_different_alternative
Split::ExperimentCatalog.find_or_create("link_color", "blue", "yellow", "orange")
end
it "should reset an experiment if it is loaded with different alternatives" do
experiment.save
blue.participant_count = 5
same_experiment = same_but_different_alternative
expect(same_experiment.alternatives.map(&:name)).to eq(["blue", "yellow", "orange"])
expect(blue.participant_count).to eq(0)
end
it "should only reset once" do
experiment.save
expect(experiment.version).to eq(0)
same_experiment = same_but_different_alternative
expect(same_experiment.version).to eq(1)
same_experiment_again = same_but_different_alternative
expect(same_experiment_again.version).to eq(1)
end
context "when metadata is changed" do
it "should increase version" do
experiment.save
experiment.metadata = { "foo" => "bar" }
expect { experiment.save }.to change { experiment.version }.by(1)
end
it "does not increase version" do
experiment.metadata = nil
experiment.save
expect { experiment.save }.to change { experiment.version }.by(0)
end
end
context "when experiment configuration is changed" do
let(:reset_manually) { false }
before do
experiment.save
allow(Split.configuration).to receive(:reset_manually).and_return(reset_manually)
green.increment_participation
green.increment_participation
experiment.set_alternatives_and_options(alternatives: %w(blue red green zip),
goals: %w(purchase))
experiment.save
end
it "resets all alternatives" do
expect(green.participant_count).to eq(0)
expect(green.completed_count).to eq(0)
end
context "when reset_manually is set" do
let(:reset_manually) { true }
it "does not reset alternatives" do
expect(green.participant_count).to eq(2)
expect(green.completed_count).to eq(0)
end
end
end
end
describe "alternatives passed as non-strings" do
it "should throw an exception if an alternative is passed that is not a string" do
expect { Split::ExperimentCatalog.find_or_create("link_color", :blue, :red) }.to raise_error(ArgumentError)
expect { Split::ExperimentCatalog.find_or_create("link_enabled", true, false) }.to raise_error(ArgumentError)
end
end
describe "specifying weights" do
let(:experiment_with_weight) {
Split::ExperimentCatalog.find_or_create("link_color", { "blue" => 1 }, { "red" => 2 })
}
it "should work for a new experiment" do
expect(experiment_with_weight.alternatives.map(&:weight)).to eq([1, 2])
end
it "should work for an existing experiment" do
experiment.save
expect(experiment_with_weight.alternatives.map(&:weight)).to eq([1, 2])
end
end
describe "specifying goals" do
let(:experiment) {
new_experiment(["purchase"])
}
context "saving experiment" do
let(:same_but_different_goals) { Split::ExperimentCatalog.find_or_create({ "link_color" => ["purchase", "refund"] }, "blue", "red", "green") }
before { experiment.save }
it "can find existing experiment" do
expect(Split::ExperimentCatalog.find("link_color").name).to eq("link_color")
end
it "should reset an experiment if it is loaded with different goals" do
same_but_different_goals
expect(Split::ExperimentCatalog.find("link_color").goals).to eq(["purchase", "refund"])
end
end
it "should have goals" do
expect(experiment.goals).to eq(["purchase"])
end
context "find or create experiment" do
it "should have correct goals" do
experiment = Split::ExperimentCatalog.find_or_create({ "link_color3" => ["purchase", "refund"] }, "blue", "red", "green")
expect(experiment.goals).to eq(["purchase", "refund"])
experiment = Split::ExperimentCatalog.find_or_create("link_color3", "blue", "red", "green")
expect(experiment.goals).to eq([])
end
end
end
describe "beta probability calculation" do
it "should return a hash with the probability of each alternative being the best" do
experiment = Split::ExperimentCatalog.find_or_create("mathematicians", "bernoulli", "poisson", "lagrange")
experiment.calc_winning_alternatives
expect(experiment.alternative_probabilities).not_to be_nil
end
it "should return between 46% and 54% probability for an experiment with 2 alternatives and no data" do
experiment = Split::ExperimentCatalog.find_or_create("scientists", "einstein", "bohr")
experiment.calc_winning_alternatives
expect(experiment.alternatives[0].p_winner).to be_within(0.04).of(0.50)
end
it "should calculate the probability of being the winning alternative separately for each goal", skip: true do
experiment = Split::ExperimentCatalog.find_or_create({ "link_color3" => ["purchase", "refund"] }, "blue", "red", "green")
goal1 = experiment.goals[0]
goal2 = experiment.goals[1]
experiment.alternatives.each do |alternative|
alternative.participant_count = 50
alternative.set_completed_count(10, goal1)
alternative.set_completed_count(15+rand(30), goal2)
end
experiment.calc_winning_alternatives
alt = experiment.alternatives[0]
p_goal1 = alt.p_winner(goal1)
p_goal2 = alt.p_winner(goal2)
expect(p_goal1).not_to be_within(0.04).of(p_goal2)
end
it "should return nil and not re-calculate probabilities if they have already been calculated today" do
experiment = Split::ExperimentCatalog.find_or_create({ "link_color3" => ["purchase", "refund"] }, "blue", "red", "green")
expect(experiment.calc_winning_alternatives).not_to be nil
expect(experiment.calc_winning_alternatives).to be nil
end
end
end
<MSG> Merge pull request #266 from caser/beta-probabilities
Beta probabilities
<DFF> @@ -377,4 +377,34 @@ describe Split::Experiment do
end
end
+ describe "beta probability calculation" do
+ it "should return a hash with the probability of each alternative being the best" do
+ experiment = Split::Experiment.find_or_create('mathematicians', 'bernoulli', 'poisson', 'lagrange')
+ experiment.calc_winning_alternatives
+ experiment.alternative_probabilities.should_not be_nil
+ end
+
+ it "should return between 46% and 54% probability for an experiment with 2 alternatives and no data" do
+ experiment = Split::Experiment.find_or_create('scientists', 'einstein', 'bohr')
+ experiment.calc_winning_alternatives
+ experiment.alternatives[0].p_winner.should be_within(0.04).of(0.50)
+ end
+
+ it "should calculate the probability of being the winning alternative separately for each goal" do
+ experiment = Split::Experiment.find_or_create({'link_color3' => ["purchase", "refund"]}, 'blue', 'red', 'green')
+ goal1 = experiment.goals[0]
+ goal2 = experiment.goals[1]
+ experiment.alternatives.each do |alternative|
+ alternative.participant_count = 50
+ alternative.set_completed_count(10, goal1)
+ alternative.set_completed_count(10+rand(30), goal2)
+ end
+ experiment.calc_winning_alternatives
+ alt = experiment.alternatives[0]
+ p_goal1 = alt.p_winner(goal1)
+ p_goal2 = alt.p_winner(goal2)
+ p_goal1.should_not be_within(0.04).of(p_goal2)
+ end
+ end
+
end
| 30 | Merge pull request #266 from caser/beta-probabilities | 0 | .rb | rb | mit | splitrb/split |
10070868 | <NME> README.md
<BEF> # [Split](https://libraries.io/rubygems/split)
[](http://badge.fury.io/rb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://codeclimate.com/github/splitrb/split/coverage)
[](https://github.com/RichardLitt/standard-readme)
[](https://www.codetriage.com/splitrb/split)
> 📈 The Rack Based A/B testing framework https://libraries.io/rubygems/split
Split is a rack based A/B testing framework designed to work with Rails, Sinatra or any other rack based app.
Split is heavily inspired by the [Abingo](https://github.com/ryanb/abingo) and [Vanity](https://github.com/assaf/vanity) Rails A/B testing plugins and [Resque](https://github.com/resque/resque) in its use of Redis.
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
## Install
### Requirements
Split v4.0+ is currently tested with Ruby >= 2.5 and Rails >= 5.2.
If your project requires compatibility with Ruby 2.4.x or older Rails versions. You can try v3.0 or v0.8.0(for Ruby 1.9.3)
Split uses Redis as a datastore.
Split only supports Redis 4.0 or greater.
If you're on OS X, Homebrew is the simplest way to install Redis:
```bash
brew install redis
redis-server /usr/local/etc/redis.conf
```
You now have a Redis daemon running on port `6379`.
### Setup
```bash
gem install split
```
#### Rails
Adding `gem 'split'` to your Gemfile will autoload it when rails starts up, as long as you've configured Redis it will 'just work'.
#### Sinatra
To configure Sinatra with Split you need to enable sessions and mix in the helper methods. Add the following lines at the top of your Sinatra app:
```ruby
require 'split'
class MySinatraApp < Sinatra::Base
enable :sessions
helpers Split::Helper
get '/' do
...
end
```
## Usage
To begin your A/B test use the `ab_test` method, naming your experiment with the first argument and then the different alternatives which you wish to test on as the other arguments.
`ab_test` returns one of the alternatives, if a user has already seen that test they will get the same alternative as before, which you can use to split your code on.
It can be used to render different templates, show different text or any other case based logic.
`ab_finished` is used to make a completion of an experiment, or conversion.
Example: View
```erb
<% ab_test(:login_button, "/images/button1.jpg", "/images/button2.jpg") do |button_file| %>
<%= image_tag(button_file, alt: "Login!") %>
<% end %>
```
Example: Controller
```ruby
def register_new_user
# See what level of free points maximizes users' decision to buy replacement points.
@starter_points = ab_test(:new_user_free_points, '100', '200', '300')
end
```
Example: Conversion tracking (in a controller!)
```ruby
def buy_new_points
# some business logic
ab_finished(:new_user_free_points)
end
```
Example: Conversion tracking (in a view)
```erb
Thanks for signing up, dude! <% ab_finished(:signup_page_redesign) %>
```
You can find more examples, tutorials and guides on the [wiki](https://github.com/splitrb/split/wiki).
## Statistical Validity
Split has two options for you to use to determine which alternative is the best.
The first option (default on the dashboard) uses a z test (n>30) for the difference between your control and alternative conversion rates to calculate statistical significance. This test will tell you whether an alternative is better or worse than your control, but it will not distinguish between which alternative is the best in an experiment with multiple alternatives. Split will only tell you if your experiment is 90%, 95%, or 99% significant, and this test only works if you have more than 30 participants and 5 conversions for each branch.
As per this [blog post](https://www.evanmiller.org/how-not-to-run-an-ab-test.html) on the pitfalls of A/B testing, it is highly recommended that you determine your requisite sample size for each branch before running the experiment. Otherwise, you'll have an increased rate of false positives (experiments which show a significant effect where really there is none).
[Here](https://www.evanmiller.org/ab-testing/sample-size.html) is a sample size calculator for your convenience.
The second option uses simulations from a beta distribution to determine the probability that the given alternative is the winner compared to all other alternatives. You can view these probabilities by clicking on the drop-down menu labeled "Confidence." This option should be used when the experiment has more than just 1 control and 1 alternative. It can also be used for a simple, 2-alternative A/B test.
Calculating the beta-distribution simulations for a large number of experiments can be slow, so the results are cached. You can specify how often they should be recalculated (the default is once per day).
```ruby
Split.configure do |config|
config.winning_alternative_recalculation_interval = 3600 # 1 hour
end
```
## Extras
### Weighted alternatives
Perhaps you only want to show an alternative to 10% of your visitors because it is very experimental or not yet fully load tested.
To do this you can pass a weight with each alternative in the following ways:
```ruby
ab_test(:homepage_design, {'Old' => 18}, {'New' => 2})
ab_test(:homepage_design, 'Old', {'New' => 1.0/9})
ab_test(:homepage_design, {'Old' => 9}, 'New')
```
This will only show the new alternative to visitors 1 in 10 times, the default weight for an alternative is 1.
### Overriding alternatives
For development and testing, you may wish to force your app to always return an alternative.
You can do this by passing it as a parameter in the url.
If you have an experiment called `button_color` with alternatives called `red` and `blue` used on your homepage, a url such as:
http://myawesomesite.com?ab_test[button_color]=red
will always have red buttons. This won't be stored in your session or count towards to results, unless you set the `store_override` configuration option.
In the event you want to disable all tests without having to know the individual experiment names, add a `SPLIT_DISABLE` query parameter.
http://myawesomesite.com?SPLIT_DISABLE=true
It is not required to send `SPLIT_DISABLE=false` to activate Split.
### Rspec Helper
To aid testing with RSpec, write `spec/support/split_helper.rb` and call `use_ab_test(alternatives_by_experiment)` in your specs as instructed below:
```ruby
# Create a file with these contents at 'spec/support/split_helper.rb'
# and ensure it is `require`d in your rails_helper.rb or spec_helper.rb
module SplitHelper
# Force a specific experiment alternative to always be returned:
# use_ab_test(signup_form: "single_page")
#
# Force alternatives for multiple experiments:
# use_ab_test(signup_form: "single_page", pricing: "show_enterprise_prices")
#
def use_ab_test(alternatives_by_experiment)
allow_any_instance_of(Split::Helper).to receive(:ab_test) do |_receiver, experiment, &block|
variant = alternatives_by_experiment.fetch(experiment) { |key| raise "Unknown experiment '#{key}'" }
block.call(variant) unless block.nil?
variant
end
end
end
# Make the `use_ab_test` method available to all specs:
RSpec.configure do |config|
config.include SplitHelper
end
```
Now you can call `use_ab_test(alternatives_by_experiment)` in your specs, for example:
```ruby
it "registers using experimental signup" do
use_ab_test experiment_name: "alternative_name"
post "/signups"
...
end
```
### Starting experiments manually
By default new A/B tests will be active right after deployment. In case you would like to start new test a while after
the deploy, you can do it by setting the `start_manually` configuration option to `true`.
After choosing this option tests won't be started right after deploy, but after pressing the `Start` button in Split admin dashboard. If a test is deleted from the Split dashboard, then it can only be started after pressing the `Start` button whenever being re-initialized.
### Reset after completion
When a user completes a test their session is reset so that they may start the test again in the future.
To stop this behaviour you can pass the following option to the `ab_finished` method:
```ruby
ab_finished(:experiment_name, reset: false)
```
The user will then always see the alternative they started with.
Any old unfinished experiment key will be deleted from the user's data storage if the experiment had been removed or is over and a winner had been chosen. This allows a user to enroll into any new experiment in cases when the `allow_multiple_experiments` config option is set to `false`.
### Reset experiments manually
By default Split automatically resets the experiment whenever it detects the configuration for an experiment has changed (e.g. you call `ab_test` with different alternatives). You can prevent this by setting the option `reset_manually` to `true`.
You may want to do this when you want to change something, like the variants' names, the metadata about an experiment, etc. without resetting everything.
### Multiple experiments at once
By default Split will avoid users participating in multiple experiments at once. This means you are less likely to skew results by adding in more variation to your tests.
To stop this behaviour and allow users to participate in multiple experiments at once set the `allow_multiple_experiments` config option to true like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = true
end
```
This will allow the user to participate in any number of experiments and belong to any alternative in each experiment. This has the possible downside of a variation in one experiment influencing the outcome of another.
To address this, setting the `allow_multiple_experiments` config option to 'control' like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = 'control'
end
```
For this to work, each and every experiment you define must have an alternative named 'control'. This will allow the user to participate in multiple experiments as long as the user belongs to the alternative 'control' in each experiment. As soon as the user belongs to an alternative named something other than 'control' the user may not participate in any more experiments. Calling ab_test(<other experiments>) will always return the first alternative without adding the user to that experiment.
### Experiment Persistence
Split comes with three built-in persistence adapters for storing users and the alternatives they've been given for each experiment.
By default Split will store the tests for each user in the session.
You can optionally configure Split to use a cookie, Redis, or any custom adapter of your choosing.
#### Cookies
```ruby
Split.configure do |config|
config.persistence = :cookie
end
```
When using the cookie persistence, Split stores data into an anonymous tracking cookie named 'split', which expires in 1 year. To change that, set the `persistence_cookie_length` in the configuration (unit of time in seconds).
```ruby
Split.configure do |config|
config.persistence = :cookie
config.persistence_cookie_length = 2592000 # 30 days
end
```
The data stored consists of the experiment name and the variants the user is in. Example: { "experiment_name" => "variant_a" }
__Note:__ Using cookies depends on `ActionDispatch::Cookies` or any identical API
#### Redis
Using Redis will allow ab_users to persist across sessions or machines.
```ruby
Split.configure do |config|
config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: -> (context) { context.current_user_id })
# Equivalent
# config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: :current_user_id)
end
```
Options:
* `lookup_by`: method to invoke per request for uniquely identifying ab_users (mandatory configuration)
* `namespace`: separate namespace to store these persisted values (default "persistence")
* `expire_seconds`: sets TTL for user key. (if a user is in multiple experiments most recent update will reset TTL for all their assignments)
#### Dual Adapter
The Dual Adapter allows the use of different persistence adapters for logged-in and logged-out users. A common use case is to use Redis for logged-in users and Cookies for logged-out users.
```ruby
cookie_adapter = Split::Persistence::CookieAdapter
redis_adapter = Split::Persistence::RedisAdapter.with_config(
lookup_by: -> (context) { context.send(:current_user).try(:id) },
expire_seconds: 2592000)
Split.configure do |config|
config.persistence = Split::Persistence::DualAdapter.with_config(
logged_in: -> (context) { !context.send(:current_user).try(:id).nil? },
logged_in_adapter: redis_adapter,
logged_out_adapter: cookie_adapter)
config.persistence_cookie_length = 2592000 # 30 days
end
```
#### Custom Adapter
Your custom adapter needs to implement the same API as existing adapters.
See `Split::Persistence::CookieAdapter` or `Split::Persistence::SessionAdapter` for a starting point.
```ruby
Split.configure do |config|
config.persistence = YourCustomAdapterClass
end
```
### Trial Event Hooks
You can define methods that will be called at the same time as experiment
alternative participation and goal completion.
For example:
``` ruby
Split.configure do |config|
config.on_trial = :log_trial # run on every trial
config.on_trial_choose = :log_trial_choose # run on trials with new users only
config.on_trial_complete = :log_trial_complete
end
```
Set these attributes to a method name available in the same context as the
`ab_test` method. These methods should accept one argument, a `Trial` instance.
``` ruby
def log_trial(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_choose(trial)
logger.info "[new user] experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_complete(trial)
logger.info "experiment=%s alternative=%s user=%s complete=true" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
#### Views
If you are running `ab_test` from a view, you must define your event
hook callback as a
[helper_method](https://apidock.com/rails/AbstractController/Helpers/ClassMethods/helper_method)
in the controller:
``` ruby
helper_method :log_trial_choose
def log_trial_choose(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
### Experiment Hooks
You can assign a proc that will be called when an experiment is reset or deleted. You can use these hooks to call methods within your application to keep data related to experiments in sync with Split.
For example:
``` ruby
Split.configure do |config|
# after experiment reset or deleted
config.on_experiment_reset = -> (example) { # Do something on reset }
config.on_experiment_delete = -> (experiment) { # Do something else on delete }
# before experiment reset or deleted
config.on_before_experiment_reset = -> (example) { # Do something on reset }
config.on_before_experiment_delete = -> (experiment) { # Do something else on delete }
# after experiment winner had been set
config.on_experiment_winner_choose = -> (experiment) { # Do something on winner choose }
end
```
## Web Interface
Split comes with a Sinatra-based front end to get an overview of how your experiments are doing.
If you are running Rails 2: You can mount this inside your app using Rack::URLMap in your `config.ru`
```ruby
require 'split/dashboard'
run Rack::URLMap.new \
"/" => Your::App.new,
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
```
Then adding this to config/routes.rb
```ruby
mount Split::Dashboard, at: 'split'
```
You may want to password protect that page, you can do so with `Rack::Auth::Basic` (in your split initializer file)
```ruby
# Rails apps or apps that already depend on activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
# Apps without activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
```
You can even use Devise or any other Warden-based authentication method to authorize users. Just replace `mount Split::Dashboard, :at => 'split'` in `config/routes.rb` with the following:
```ruby
match "/split" => Split::Dashboard, anchor: false, via: [:get, :post, :delete], constraints: -> (request) do
request.env['warden'].authenticated? # are we authenticated?
request.env['warden'].authenticate! # authenticate if not already
# or even check any other condition such as request.env['warden'].user.is_admin?
end
```
More information on this [here](https://steve.dynedge.co.uk/2011/12/09/controlling-access-to-routes-and-rack-apps-in-rails-3-with-devise-and-warden/)
### Screenshot
## Configuration
You can override the default configuration options of Split like so:
```ruby
Split.configure do |config|
config.db_failover = true # handle Redis errors gracefully
config.db_failover_on_db_error = -> (error) { Rails.logger.error(error.message) }
config.allow_multiple_experiments = true
config.enabled = true
config.persistence = Split::Persistence::SessionAdapter
#config.start_manually = false ## new test will have to be started manually from the admin panel. default false
#config.reset_manually = false ## if true, it never resets the experiment data, even if the configuration changes
config.include_rails_helper = true
config.redis = "redis://custom.redis.url:6380"
end
```
Split looks for the Redis host in the environment variable `REDIS_URL` then
defaults to `redis://localhost:6379` if not specified by configure block.
On platforms like Heroku, Split will use the value of `REDIS_PROVIDER` to
determine which env variable key to use when retrieving the host config. This
defaults to `REDIS_URL`.
### Filtering
In most scenarios you don't want to have AB-Testing enabled for web spiders, robots or special groups of users.
Split provides functionality to filter this based on a predefined, extensible list of bots, IP-lists or custom exclude logic.
```ruby
Split.configure do |config|
# bot config
config.robot_regex = /my_custom_robot_regex/ # or
config.bots['newbot'] = "Description for bot with 'newbot' user agent, which will be added to config.robot_regex for exclusion"
# IP config
config.ignore_ip_addresses << '81.19.48.130' # or regex: /81\.19\.48\.[0-9]+/
# or provide your own filter functionality, the default is proc{ |request| is_robot? || is_ignored_ip_address? || is_preview? }
config.ignore_filter = -> (request) { CustomExcludeLogic.excludes?(request) }
end
```
### Experiment configuration
Instead of providing the experiment options inline, you can store them
in a hash. This hash can control your experiment's alternatives, weights,
algorithm and if the experiment resets once finished:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
resettable: false
},
:my_second_experiment => {
algorithm: 'Split::Algorithms::Whiplash',
alternatives: [
{ name: "a", percent: 67 },
{ name: "b", percent: 33 }
]
}
}
end
```
You can also store your experiments in a YAML file:
```ruby
Split.configure do |config|
config.experiments = YAML.load_file "config/experiments.yml"
end
```
You can then define the YAML file like:
```yaml
my_first_experiment:
alternatives:
- a
- b
my_second_experiment:
alternatives:
- name: a
percent: 67
- name: b
percent: 33
resettable: false
```
This simplifies the calls from your code:
```ruby
ab_test(:my_first_experiment)
```
and:
```ruby
ab_finished(:my_first_experiment)
```
You can also add meta data for each experiment, which is very useful when you need more than an alternative name to change behaviour:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metadata: {
"a" => {"text" => "Have a fantastic day"},
"b" => {"text" => "Don't get hit by a bus"}
}
}
}
end
```
```yaml
my_first_experiment:
alternatives:
- a
- b
metadata:
a:
text: "Have a fantastic day"
b:
text: "Don't get hit by a bus"
```
This allows for some advanced experiment configuration using methods like:
```ruby
trial.alternative.name # => "a"
trial.metadata['text'] # => "Have a fantastic day"
```
or in views:
```erb
<% ab_test("my_first_experiment") do |alternative, meta| %>
<%= alternative %>
<small><%= meta['text'] %></small>
<% end %>
```
The keys used in meta data should be Strings
#### Metrics
You might wish to track generic metrics, such as conversions, and use
those to complete multiple different experiments without adding more to
your code. You can use the configuration hash to do this, thanks to
the `:metric` option.
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metric: :my_metric
}
}
end
```
Your code may then track a completion using the metric instead of
the experiment name:
```ruby
ab_finished(:my_metric)
```
You can also create a new metric by instantiating and saving a new Metric object.
```ruby
Split::Metric.new(:my_metric)
Split::Metric.save
```
#### Goals
You might wish to allow an experiment to have multiple, distinguishable goals.
The API to define goals for an experiment is this:
```ruby
ab_test({link_color: ["purchase", "refund"]}, "red", "blue")
```
or you can define them in a configuration file:
```ruby
Split.configure do |config|
config.experiments = {
link_color: {
alternatives: ["red", "blue"],
goals: ["purchase", "refund"]
}
}
end
```
To complete a goal conversion, you do it like:
```ruby
ab_finished(link_color: "purchase")
```
Note that if you pass additional options, that should be a separate hash:
```ruby
ab_finished({ link_color: "purchase" }, reset: false)
```
**NOTE:** This does not mean that a single experiment can complete more than one goal.
Once you finish one of the goals, the test is considered to be completed, and finishing the other goal will no longer register. (Assuming the test runs with `reset: false`.)
**Good Example**: Test if listing Plan A first result in more conversions to Plan A (goal: "plana_conversion") or Plan B (goal: "planb_conversion").
**Bad Example**: Test if button color increases conversion rate through multiple steps of a funnel. THIS WILL NOT WORK.
**Bad Example**: Test both how button color affects signup *and* how it affects login, at the same time. THIS WILL NOT WORK.
#### Combined Experiments
If you want to test how button color affects signup *and* how it affects login at the same time, use combined experiments.
Configure like so:
```ruby
Split.configuration.experiments = {
:button_color_experiment => {
:alternatives => ["blue", "green"],
:combined_experiments => ["button_color_on_signup", "button_color_on_login"]
}
}
```
Starting the combined test starts all combined experiments
```ruby
ab_combined_test(:button_color_experiment)
```
Finish each combined test as normal
```ruby
ab_finished(:button_color_on_login)
ab_finished(:button_color_on_signup)
```
**Additional Configuration**:
* Be sure to enable `allow_multiple_experiments`
* In Sinatra include the CombinedExperimentsHelper
```
helpers Split::CombinedExperimentsHelper
```
### DB failover solution
Due to the fact that Redis has no automatic failover mechanism, it's
possible to switch on the `db_failover` config option, so that `ab_test`
and `ab_finished` will not crash in case of a db failure. `ab_test` always
delivers alternative A (the first one) in that case.
It's also possible to set a `db_failover_on_db_error` callback (proc)
for example to log these errors via Rails.logger.
### Redis
You may want to change the Redis host and port Split connects to, or
set various other options at startup.
Split has a `redis` setter which can be given a string or a Redis
object. This means if you're already using Redis in your app, Split
can re-use the existing connection.
String: `Split.redis = 'redis://localhost:6379'`
Redis: `Split.redis = $redis`
For our rails app we have a `config/initializers/split.rb` file where
we load `config/split.yml` by hand and set the Redis information
appropriately.
Here's our `config/split.yml`:
```yml
development: redis://localhost:6379
test: redis://localhost:6379
staging: redis://redis1.example.com:6379
fi: redis://localhost:6379
production: redis://redis1.example.com:6379
```
And our initializer:
```ruby
split_config = YAML.load_file(Rails.root.join('config', 'split.yml'))
Split.redis = split_config[Rails.env]
```
### Redis Caching (v4.0+)
In some high-volume usage scenarios, Redis load can be incurred by repeated
fetches for fairly static data. Enabling caching will reduce this load.
```ruby
Split.configuration.cache = true
````
This currently caches:
- `Split::ExperimentCatalog.find`
- `Split::Experiment.start_time`
- `Split::Experiment.winner`
## Namespaces
If you're running multiple, separate instances of Split you may want
to namespace the keyspaces so they do not overlap. This is not unlike
the approach taken by many memcached clients.
This feature can be provided by the [redis-namespace](https://github.com/defunkt/redis-namespace)
library. To configure Split to use `Redis::Namespace`, do the following:
1. Add `redis-namespace` to your Gemfile:
```ruby
gem 'redis-namespace'
```
2. Configure `Split.redis` to use a `Redis::Namespace` instance (possible in an
initializer):
```ruby
redis = Redis.new(url: ENV['REDIS_URL']) # or whatever config you want
Split.redis = Redis::Namespace.new(:your_namespace, redis: redis)
```
## Outside of a Web Session
Split provides the Helper module to facilitate running experiments inside web sessions.
Alternatively, you can access the underlying Metric, Trial, Experiment and Alternative objects to
conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
trial.choose!
# get the result, returns either red or blue
trial.alternative.name
# if the goal has been achieved, increment the successful completions for this alternative.
if goal_achieved?
trial.complete!
end
```
## Algorithms
By default, Split ships with `Split::Algorithms::WeightedSample` that randomly selects from possible alternatives for a traditional a/b test.
It is possible to specify static weights to favor certain alternatives.
`Split::Algorithms::Whiplash` is an implementation of a [multi-armed bandit algorithm](http://stevehanov.ca/blog/index.php?id=132).
This algorithm will automatically weight the alternatives based on their relative performance,
choosing the better-performing ones more often as trials are completed.
`Split::Algorithms::BlockRandomization` is an algorithm that ensures equal
participation across all alternatives. This algorithm will choose the alternative
with the fewest participants. In the event of multiple minimum participant alternatives
(i.e. starting a new "Block") the algorithm will choose a random alternative from
those minimum participant alternatives.
Users may also write their own algorithms. The default algorithm may be specified globally in the configuration file, or on a per experiment basis using the experiments hash of the configuration file.
To change the algorithm globally for all experiments, use the following in your initializer:
```ruby
Split.configure do |config|
config.algorithm = Split::Algorithms::Whiplash
end
```
## Extensions
- [Split::Export](https://github.com/splitrb/split-export) - Easily export A/B test data out of Split.
- [Split::Analytics](https://github.com/splitrb/split-analytics) - Push test data to Google Analytics.
- [Split::Mongoid](https://github.com/MongoHQ/split-mongoid) - Store experiment data in mongoid (still uses redis).
- [Split::Cacheable](https://github.com/harrystech/split_cacheable) - Automatically create cache buckets per test.
- [Split::Counters](https://github.com/bernardkroes/split-counters) - Add counters per experiment and alternative.
- [Split::Cli](https://github.com/craigmcnamara/split-cli) - A CLI to trigger Split A/B tests.
## Screencast
Ryan bates has produced an excellent 10 minute screencast about split on the Railscasts site: [A/B Testing with Split](http://railscasts.com/episodes/331-a-b-testing-with-split)
## Blogposts
* [Recipe: A/B testing with KISSMetrics and the split gem](https://robots.thoughtbot.com/post/9595887299/recipe-a-b-testing-with-kissmetrics-and-the-split-gem)
* [Rails A/B testing with Split on Heroku](http://blog.nathanhumbert.com/2012/02/rails-ab-testing-with-split-on-heroku.html)
## Backers
Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/split#backer)]
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## Sponsors
Become a sponsor and get your logo on our README on Github with a link to your site. [[Become a sponsor](https://opencollective.com/split#sponsor)]
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## Contribute
Please do! Over 70 different people have contributed to the project, you can see them all here: https://github.com/splitrb/split/graphs/contributors.
### Development
The source code is hosted at [GitHub](https://github.com/splitrb/split).
Report issues and feature requests on [GitHub Issues](https://github.com/splitrb/split/issues).
You can find a discussion form on [Google Groups](https://groups.google.com/d/forum/split-ruby).
## Copyright
[MIT License](LICENSE) © 2018 [Andrew Nesbitt](https://github.com/andrew).
# Start a Redis server in another tab.
redis-server
bundle
rake spec
### A Note on Patches and Pull Requests
* Fork the project.
* Make your feature addition or bug fix.
* Add tests for it. This is important so I don't break it in a
future version unintentionally.
* Add documentation if necessary.
* Commit. Do not mess with the rakefile, version, or history.
(If you want to have your own version, that is fine. But bump the version in a commit by itself, which I can ignore when I pull.)
* Send a pull request. Bonus points for topic branches.
### Code of Conduct
Please note that this project is released with a [Contributor Code of Conduct](CODE_OF_CONDUCT.md). By participating in this project you agree to abide by its terms.
## Copyright
[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
<MSG> Merge pull request #552 from selfish/patch-1
Update Copyright in README.md
<DFF> @@ -950,4 +950,4 @@ Please note that this project is released with a [Contributor Code of Conduct](C
## Copyright
-[MIT License](LICENSE) © 2018 [Andrew Nesbitt](https://github.com/andrew).
+[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
| 1 | Merge pull request #552 from selfish/patch-1 | 1 | .md | md | mit | splitrb/split |
10070869 | <NME> README.md
<BEF> # [Split](https://libraries.io/rubygems/split)
[](http://badge.fury.io/rb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://codeclimate.com/github/splitrb/split/coverage)
[](https://github.com/RichardLitt/standard-readme)
[](https://www.codetriage.com/splitrb/split)
> 📈 The Rack Based A/B testing framework https://libraries.io/rubygems/split
Split is a rack based A/B testing framework designed to work with Rails, Sinatra or any other rack based app.
Split is heavily inspired by the [Abingo](https://github.com/ryanb/abingo) and [Vanity](https://github.com/assaf/vanity) Rails A/B testing plugins and [Resque](https://github.com/resque/resque) in its use of Redis.
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
## Install
### Requirements
Split v4.0+ is currently tested with Ruby >= 2.5 and Rails >= 5.2.
If your project requires compatibility with Ruby 2.4.x or older Rails versions. You can try v3.0 or v0.8.0(for Ruby 1.9.3)
Split uses Redis as a datastore.
Split only supports Redis 4.0 or greater.
If you're on OS X, Homebrew is the simplest way to install Redis:
```bash
brew install redis
redis-server /usr/local/etc/redis.conf
```
You now have a Redis daemon running on port `6379`.
### Setup
```bash
gem install split
```
#### Rails
Adding `gem 'split'` to your Gemfile will autoload it when rails starts up, as long as you've configured Redis it will 'just work'.
#### Sinatra
To configure Sinatra with Split you need to enable sessions and mix in the helper methods. Add the following lines at the top of your Sinatra app:
```ruby
require 'split'
class MySinatraApp < Sinatra::Base
enable :sessions
helpers Split::Helper
get '/' do
...
end
```
## Usage
To begin your A/B test use the `ab_test` method, naming your experiment with the first argument and then the different alternatives which you wish to test on as the other arguments.
`ab_test` returns one of the alternatives, if a user has already seen that test they will get the same alternative as before, which you can use to split your code on.
It can be used to render different templates, show different text or any other case based logic.
`ab_finished` is used to make a completion of an experiment, or conversion.
Example: View
```erb
<% ab_test(:login_button, "/images/button1.jpg", "/images/button2.jpg") do |button_file| %>
<%= image_tag(button_file, alt: "Login!") %>
<% end %>
```
Example: Controller
```ruby
def register_new_user
# See what level of free points maximizes users' decision to buy replacement points.
@starter_points = ab_test(:new_user_free_points, '100', '200', '300')
end
```
Example: Conversion tracking (in a controller!)
```ruby
def buy_new_points
# some business logic
ab_finished(:new_user_free_points)
end
```
Example: Conversion tracking (in a view)
```erb
Thanks for signing up, dude! <% ab_finished(:signup_page_redesign) %>
```
You can find more examples, tutorials and guides on the [wiki](https://github.com/splitrb/split/wiki).
## Statistical Validity
Split has two options for you to use to determine which alternative is the best.
The first option (default on the dashboard) uses a z test (n>30) for the difference between your control and alternative conversion rates to calculate statistical significance. This test will tell you whether an alternative is better or worse than your control, but it will not distinguish between which alternative is the best in an experiment with multiple alternatives. Split will only tell you if your experiment is 90%, 95%, or 99% significant, and this test only works if you have more than 30 participants and 5 conversions for each branch.
As per this [blog post](https://www.evanmiller.org/how-not-to-run-an-ab-test.html) on the pitfalls of A/B testing, it is highly recommended that you determine your requisite sample size for each branch before running the experiment. Otherwise, you'll have an increased rate of false positives (experiments which show a significant effect where really there is none).
[Here](https://www.evanmiller.org/ab-testing/sample-size.html) is a sample size calculator for your convenience.
The second option uses simulations from a beta distribution to determine the probability that the given alternative is the winner compared to all other alternatives. You can view these probabilities by clicking on the drop-down menu labeled "Confidence." This option should be used when the experiment has more than just 1 control and 1 alternative. It can also be used for a simple, 2-alternative A/B test.
Calculating the beta-distribution simulations for a large number of experiments can be slow, so the results are cached. You can specify how often they should be recalculated (the default is once per day).
```ruby
Split.configure do |config|
config.winning_alternative_recalculation_interval = 3600 # 1 hour
end
```
## Extras
### Weighted alternatives
Perhaps you only want to show an alternative to 10% of your visitors because it is very experimental or not yet fully load tested.
To do this you can pass a weight with each alternative in the following ways:
```ruby
ab_test(:homepage_design, {'Old' => 18}, {'New' => 2})
ab_test(:homepage_design, 'Old', {'New' => 1.0/9})
ab_test(:homepage_design, {'Old' => 9}, 'New')
```
This will only show the new alternative to visitors 1 in 10 times, the default weight for an alternative is 1.
### Overriding alternatives
For development and testing, you may wish to force your app to always return an alternative.
You can do this by passing it as a parameter in the url.
If you have an experiment called `button_color` with alternatives called `red` and `blue` used on your homepage, a url such as:
http://myawesomesite.com?ab_test[button_color]=red
will always have red buttons. This won't be stored in your session or count towards to results, unless you set the `store_override` configuration option.
In the event you want to disable all tests without having to know the individual experiment names, add a `SPLIT_DISABLE` query parameter.
http://myawesomesite.com?SPLIT_DISABLE=true
It is not required to send `SPLIT_DISABLE=false` to activate Split.
### Rspec Helper
To aid testing with RSpec, write `spec/support/split_helper.rb` and call `use_ab_test(alternatives_by_experiment)` in your specs as instructed below:
```ruby
# Create a file with these contents at 'spec/support/split_helper.rb'
# and ensure it is `require`d in your rails_helper.rb or spec_helper.rb
module SplitHelper
# Force a specific experiment alternative to always be returned:
# use_ab_test(signup_form: "single_page")
#
# Force alternatives for multiple experiments:
# use_ab_test(signup_form: "single_page", pricing: "show_enterprise_prices")
#
def use_ab_test(alternatives_by_experiment)
allow_any_instance_of(Split::Helper).to receive(:ab_test) do |_receiver, experiment, &block|
variant = alternatives_by_experiment.fetch(experiment) { |key| raise "Unknown experiment '#{key}'" }
block.call(variant) unless block.nil?
variant
end
end
end
# Make the `use_ab_test` method available to all specs:
RSpec.configure do |config|
config.include SplitHelper
end
```
Now you can call `use_ab_test(alternatives_by_experiment)` in your specs, for example:
```ruby
it "registers using experimental signup" do
use_ab_test experiment_name: "alternative_name"
post "/signups"
...
end
```
### Starting experiments manually
By default new A/B tests will be active right after deployment. In case you would like to start new test a while after
the deploy, you can do it by setting the `start_manually` configuration option to `true`.
After choosing this option tests won't be started right after deploy, but after pressing the `Start` button in Split admin dashboard. If a test is deleted from the Split dashboard, then it can only be started after pressing the `Start` button whenever being re-initialized.
### Reset after completion
When a user completes a test their session is reset so that they may start the test again in the future.
To stop this behaviour you can pass the following option to the `ab_finished` method:
```ruby
ab_finished(:experiment_name, reset: false)
```
The user will then always see the alternative they started with.
Any old unfinished experiment key will be deleted from the user's data storage if the experiment had been removed or is over and a winner had been chosen. This allows a user to enroll into any new experiment in cases when the `allow_multiple_experiments` config option is set to `false`.
### Reset experiments manually
By default Split automatically resets the experiment whenever it detects the configuration for an experiment has changed (e.g. you call `ab_test` with different alternatives). You can prevent this by setting the option `reset_manually` to `true`.
You may want to do this when you want to change something, like the variants' names, the metadata about an experiment, etc. without resetting everything.
### Multiple experiments at once
By default Split will avoid users participating in multiple experiments at once. This means you are less likely to skew results by adding in more variation to your tests.
To stop this behaviour and allow users to participate in multiple experiments at once set the `allow_multiple_experiments` config option to true like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = true
end
```
This will allow the user to participate in any number of experiments and belong to any alternative in each experiment. This has the possible downside of a variation in one experiment influencing the outcome of another.
To address this, setting the `allow_multiple_experiments` config option to 'control' like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = 'control'
end
```
For this to work, each and every experiment you define must have an alternative named 'control'. This will allow the user to participate in multiple experiments as long as the user belongs to the alternative 'control' in each experiment. As soon as the user belongs to an alternative named something other than 'control' the user may not participate in any more experiments. Calling ab_test(<other experiments>) will always return the first alternative without adding the user to that experiment.
### Experiment Persistence
Split comes with three built-in persistence adapters for storing users and the alternatives they've been given for each experiment.
By default Split will store the tests for each user in the session.
You can optionally configure Split to use a cookie, Redis, or any custom adapter of your choosing.
#### Cookies
```ruby
Split.configure do |config|
config.persistence = :cookie
end
```
When using the cookie persistence, Split stores data into an anonymous tracking cookie named 'split', which expires in 1 year. To change that, set the `persistence_cookie_length` in the configuration (unit of time in seconds).
```ruby
Split.configure do |config|
config.persistence = :cookie
config.persistence_cookie_length = 2592000 # 30 days
end
```
The data stored consists of the experiment name and the variants the user is in. Example: { "experiment_name" => "variant_a" }
__Note:__ Using cookies depends on `ActionDispatch::Cookies` or any identical API
#### Redis
Using Redis will allow ab_users to persist across sessions or machines.
```ruby
Split.configure do |config|
config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: -> (context) { context.current_user_id })
# Equivalent
# config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: :current_user_id)
end
```
Options:
* `lookup_by`: method to invoke per request for uniquely identifying ab_users (mandatory configuration)
* `namespace`: separate namespace to store these persisted values (default "persistence")
* `expire_seconds`: sets TTL for user key. (if a user is in multiple experiments most recent update will reset TTL for all their assignments)
#### Dual Adapter
The Dual Adapter allows the use of different persistence adapters for logged-in and logged-out users. A common use case is to use Redis for logged-in users and Cookies for logged-out users.
```ruby
cookie_adapter = Split::Persistence::CookieAdapter
redis_adapter = Split::Persistence::RedisAdapter.with_config(
lookup_by: -> (context) { context.send(:current_user).try(:id) },
expire_seconds: 2592000)
Split.configure do |config|
config.persistence = Split::Persistence::DualAdapter.with_config(
logged_in: -> (context) { !context.send(:current_user).try(:id).nil? },
logged_in_adapter: redis_adapter,
logged_out_adapter: cookie_adapter)
config.persistence_cookie_length = 2592000 # 30 days
end
```
#### Custom Adapter
Your custom adapter needs to implement the same API as existing adapters.
See `Split::Persistence::CookieAdapter` or `Split::Persistence::SessionAdapter` for a starting point.
```ruby
Split.configure do |config|
config.persistence = YourCustomAdapterClass
end
```
### Trial Event Hooks
You can define methods that will be called at the same time as experiment
alternative participation and goal completion.
For example:
``` ruby
Split.configure do |config|
config.on_trial = :log_trial # run on every trial
config.on_trial_choose = :log_trial_choose # run on trials with new users only
config.on_trial_complete = :log_trial_complete
end
```
Set these attributes to a method name available in the same context as the
`ab_test` method. These methods should accept one argument, a `Trial` instance.
``` ruby
def log_trial(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_choose(trial)
logger.info "[new user] experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_complete(trial)
logger.info "experiment=%s alternative=%s user=%s complete=true" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
#### Views
If you are running `ab_test` from a view, you must define your event
hook callback as a
[helper_method](https://apidock.com/rails/AbstractController/Helpers/ClassMethods/helper_method)
in the controller:
``` ruby
helper_method :log_trial_choose
def log_trial_choose(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
### Experiment Hooks
You can assign a proc that will be called when an experiment is reset or deleted. You can use these hooks to call methods within your application to keep data related to experiments in sync with Split.
For example:
``` ruby
Split.configure do |config|
# after experiment reset or deleted
config.on_experiment_reset = -> (example) { # Do something on reset }
config.on_experiment_delete = -> (experiment) { # Do something else on delete }
# before experiment reset or deleted
config.on_before_experiment_reset = -> (example) { # Do something on reset }
config.on_before_experiment_delete = -> (experiment) { # Do something else on delete }
# after experiment winner had been set
config.on_experiment_winner_choose = -> (experiment) { # Do something on winner choose }
end
```
## Web Interface
Split comes with a Sinatra-based front end to get an overview of how your experiments are doing.
If you are running Rails 2: You can mount this inside your app using Rack::URLMap in your `config.ru`
```ruby
require 'split/dashboard'
run Rack::URLMap.new \
"/" => Your::App.new,
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
```
Then adding this to config/routes.rb
```ruby
mount Split::Dashboard, at: 'split'
```
You may want to password protect that page, you can do so with `Rack::Auth::Basic` (in your split initializer file)
```ruby
# Rails apps or apps that already depend on activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
# Apps without activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
```
You can even use Devise or any other Warden-based authentication method to authorize users. Just replace `mount Split::Dashboard, :at => 'split'` in `config/routes.rb` with the following:
```ruby
match "/split" => Split::Dashboard, anchor: false, via: [:get, :post, :delete], constraints: -> (request) do
request.env['warden'].authenticated? # are we authenticated?
request.env['warden'].authenticate! # authenticate if not already
# or even check any other condition such as request.env['warden'].user.is_admin?
end
```
More information on this [here](https://steve.dynedge.co.uk/2011/12/09/controlling-access-to-routes-and-rack-apps-in-rails-3-with-devise-and-warden/)
### Screenshot
## Configuration
You can override the default configuration options of Split like so:
```ruby
Split.configure do |config|
config.db_failover = true # handle Redis errors gracefully
config.db_failover_on_db_error = -> (error) { Rails.logger.error(error.message) }
config.allow_multiple_experiments = true
config.enabled = true
config.persistence = Split::Persistence::SessionAdapter
#config.start_manually = false ## new test will have to be started manually from the admin panel. default false
#config.reset_manually = false ## if true, it never resets the experiment data, even if the configuration changes
config.include_rails_helper = true
config.redis = "redis://custom.redis.url:6380"
end
```
Split looks for the Redis host in the environment variable `REDIS_URL` then
defaults to `redis://localhost:6379` if not specified by configure block.
On platforms like Heroku, Split will use the value of `REDIS_PROVIDER` to
determine which env variable key to use when retrieving the host config. This
defaults to `REDIS_URL`.
### Filtering
In most scenarios you don't want to have AB-Testing enabled for web spiders, robots or special groups of users.
Split provides functionality to filter this based on a predefined, extensible list of bots, IP-lists or custom exclude logic.
```ruby
Split.configure do |config|
# bot config
config.robot_regex = /my_custom_robot_regex/ # or
config.bots['newbot'] = "Description for bot with 'newbot' user agent, which will be added to config.robot_regex for exclusion"
# IP config
config.ignore_ip_addresses << '81.19.48.130' # or regex: /81\.19\.48\.[0-9]+/
# or provide your own filter functionality, the default is proc{ |request| is_robot? || is_ignored_ip_address? || is_preview? }
config.ignore_filter = -> (request) { CustomExcludeLogic.excludes?(request) }
end
```
### Experiment configuration
Instead of providing the experiment options inline, you can store them
in a hash. This hash can control your experiment's alternatives, weights,
algorithm and if the experiment resets once finished:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
resettable: false
},
:my_second_experiment => {
algorithm: 'Split::Algorithms::Whiplash',
alternatives: [
{ name: "a", percent: 67 },
{ name: "b", percent: 33 }
]
}
}
end
```
You can also store your experiments in a YAML file:
```ruby
Split.configure do |config|
config.experiments = YAML.load_file "config/experiments.yml"
end
```
You can then define the YAML file like:
```yaml
my_first_experiment:
alternatives:
- a
- b
my_second_experiment:
alternatives:
- name: a
percent: 67
- name: b
percent: 33
resettable: false
```
This simplifies the calls from your code:
```ruby
ab_test(:my_first_experiment)
```
and:
```ruby
ab_finished(:my_first_experiment)
```
You can also add meta data for each experiment, which is very useful when you need more than an alternative name to change behaviour:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metadata: {
"a" => {"text" => "Have a fantastic day"},
"b" => {"text" => "Don't get hit by a bus"}
}
}
}
end
```
```yaml
my_first_experiment:
alternatives:
- a
- b
metadata:
a:
text: "Have a fantastic day"
b:
text: "Don't get hit by a bus"
```
This allows for some advanced experiment configuration using methods like:
```ruby
trial.alternative.name # => "a"
trial.metadata['text'] # => "Have a fantastic day"
```
or in views:
```erb
<% ab_test("my_first_experiment") do |alternative, meta| %>
<%= alternative %>
<small><%= meta['text'] %></small>
<% end %>
```
The keys used in meta data should be Strings
#### Metrics
You might wish to track generic metrics, such as conversions, and use
those to complete multiple different experiments without adding more to
your code. You can use the configuration hash to do this, thanks to
the `:metric` option.
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metric: :my_metric
}
}
end
```
Your code may then track a completion using the metric instead of
the experiment name:
```ruby
ab_finished(:my_metric)
```
You can also create a new metric by instantiating and saving a new Metric object.
```ruby
Split::Metric.new(:my_metric)
Split::Metric.save
```
#### Goals
You might wish to allow an experiment to have multiple, distinguishable goals.
The API to define goals for an experiment is this:
```ruby
ab_test({link_color: ["purchase", "refund"]}, "red", "blue")
```
or you can define them in a configuration file:
```ruby
Split.configure do |config|
config.experiments = {
link_color: {
alternatives: ["red", "blue"],
goals: ["purchase", "refund"]
}
}
end
```
To complete a goal conversion, you do it like:
```ruby
ab_finished(link_color: "purchase")
```
Note that if you pass additional options, that should be a separate hash:
```ruby
ab_finished({ link_color: "purchase" }, reset: false)
```
**NOTE:** This does not mean that a single experiment can complete more than one goal.
Once you finish one of the goals, the test is considered to be completed, and finishing the other goal will no longer register. (Assuming the test runs with `reset: false`.)
**Good Example**: Test if listing Plan A first result in more conversions to Plan A (goal: "plana_conversion") or Plan B (goal: "planb_conversion").
**Bad Example**: Test if button color increases conversion rate through multiple steps of a funnel. THIS WILL NOT WORK.
**Bad Example**: Test both how button color affects signup *and* how it affects login, at the same time. THIS WILL NOT WORK.
#### Combined Experiments
If you want to test how button color affects signup *and* how it affects login at the same time, use combined experiments.
Configure like so:
```ruby
Split.configuration.experiments = {
:button_color_experiment => {
:alternatives => ["blue", "green"],
:combined_experiments => ["button_color_on_signup", "button_color_on_login"]
}
}
```
Starting the combined test starts all combined experiments
```ruby
ab_combined_test(:button_color_experiment)
```
Finish each combined test as normal
```ruby
ab_finished(:button_color_on_login)
ab_finished(:button_color_on_signup)
```
**Additional Configuration**:
* Be sure to enable `allow_multiple_experiments`
* In Sinatra include the CombinedExperimentsHelper
```
helpers Split::CombinedExperimentsHelper
```
### DB failover solution
Due to the fact that Redis has no automatic failover mechanism, it's
possible to switch on the `db_failover` config option, so that `ab_test`
and `ab_finished` will not crash in case of a db failure. `ab_test` always
delivers alternative A (the first one) in that case.
It's also possible to set a `db_failover_on_db_error` callback (proc)
for example to log these errors via Rails.logger.
### Redis
You may want to change the Redis host and port Split connects to, or
set various other options at startup.
Split has a `redis` setter which can be given a string or a Redis
object. This means if you're already using Redis in your app, Split
can re-use the existing connection.
String: `Split.redis = 'redis://localhost:6379'`
Redis: `Split.redis = $redis`
For our rails app we have a `config/initializers/split.rb` file where
we load `config/split.yml` by hand and set the Redis information
appropriately.
Here's our `config/split.yml`:
```yml
development: redis://localhost:6379
test: redis://localhost:6379
staging: redis://redis1.example.com:6379
fi: redis://localhost:6379
production: redis://redis1.example.com:6379
```
And our initializer:
```ruby
split_config = YAML.load_file(Rails.root.join('config', 'split.yml'))
Split.redis = split_config[Rails.env]
```
### Redis Caching (v4.0+)
In some high-volume usage scenarios, Redis load can be incurred by repeated
fetches for fairly static data. Enabling caching will reduce this load.
```ruby
Split.configuration.cache = true
````
This currently caches:
- `Split::ExperimentCatalog.find`
- `Split::Experiment.start_time`
- `Split::Experiment.winner`
## Namespaces
If you're running multiple, separate instances of Split you may want
to namespace the keyspaces so they do not overlap. This is not unlike
the approach taken by many memcached clients.
This feature can be provided by the [redis-namespace](https://github.com/defunkt/redis-namespace)
library. To configure Split to use `Redis::Namespace`, do the following:
1. Add `redis-namespace` to your Gemfile:
```ruby
gem 'redis-namespace'
```
2. Configure `Split.redis` to use a `Redis::Namespace` instance (possible in an
initializer):
```ruby
redis = Redis.new(url: ENV['REDIS_URL']) # or whatever config you want
Split.redis = Redis::Namespace.new(:your_namespace, redis: redis)
```
## Outside of a Web Session
Split provides the Helper module to facilitate running experiments inside web sessions.
Alternatively, you can access the underlying Metric, Trial, Experiment and Alternative objects to
conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
trial.choose!
# get the result, returns either red or blue
trial.alternative.name
# if the goal has been achieved, increment the successful completions for this alternative.
if goal_achieved?
trial.complete!
end
```
## Algorithms
By default, Split ships with `Split::Algorithms::WeightedSample` that randomly selects from possible alternatives for a traditional a/b test.
It is possible to specify static weights to favor certain alternatives.
`Split::Algorithms::Whiplash` is an implementation of a [multi-armed bandit algorithm](http://stevehanov.ca/blog/index.php?id=132).
This algorithm will automatically weight the alternatives based on their relative performance,
choosing the better-performing ones more often as trials are completed.
`Split::Algorithms::BlockRandomization` is an algorithm that ensures equal
participation across all alternatives. This algorithm will choose the alternative
with the fewest participants. In the event of multiple minimum participant alternatives
(i.e. starting a new "Block") the algorithm will choose a random alternative from
those minimum participant alternatives.
Users may also write their own algorithms. The default algorithm may be specified globally in the configuration file, or on a per experiment basis using the experiments hash of the configuration file.
To change the algorithm globally for all experiments, use the following in your initializer:
```ruby
Split.configure do |config|
config.algorithm = Split::Algorithms::Whiplash
end
```
## Extensions
- [Split::Export](https://github.com/splitrb/split-export) - Easily export A/B test data out of Split.
- [Split::Analytics](https://github.com/splitrb/split-analytics) - Push test data to Google Analytics.
- [Split::Mongoid](https://github.com/MongoHQ/split-mongoid) - Store experiment data in mongoid (still uses redis).
- [Split::Cacheable](https://github.com/harrystech/split_cacheable) - Automatically create cache buckets per test.
- [Split::Counters](https://github.com/bernardkroes/split-counters) - Add counters per experiment and alternative.
- [Split::Cli](https://github.com/craigmcnamara/split-cli) - A CLI to trigger Split A/B tests.
## Screencast
Ryan bates has produced an excellent 10 minute screencast about split on the Railscasts site: [A/B Testing with Split](http://railscasts.com/episodes/331-a-b-testing-with-split)
## Blogposts
* [Recipe: A/B testing with KISSMetrics and the split gem](https://robots.thoughtbot.com/post/9595887299/recipe-a-b-testing-with-kissmetrics-and-the-split-gem)
* [Rails A/B testing with Split on Heroku](http://blog.nathanhumbert.com/2012/02/rails-ab-testing-with-split-on-heroku.html)
## Backers
Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/split#backer)]
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## Contribute
Please do! Over 70 different people have contributed to the project, you can see them all here: https://github.com/splitrb/split/graphs/contributors.
### Development
The source code is hosted at [GitHub](https://github.com/splitrb/split).
Report issues and feature requests on [GitHub Issues](https://github.com/splitrb/split/issues).
You can find a discussion form on [Google Groups](https://groups.google.com/d/forum/split-ruby).
## Copyright
[MIT License](LICENSE) © 2018 [Andrew Nesbitt](https://github.com/andrew).
# Start a Redis server in another tab.
redis-server
bundle
rake spec
### A Note on Patches and Pull Requests
* Fork the project.
* Make your feature addition or bug fix.
* Add tests for it. This is important so I don't break it in a
future version unintentionally.
* Add documentation if necessary.
* Commit. Do not mess with the rakefile, version, or history.
(If you want to have your own version, that is fine. But bump the version in a commit by itself, which I can ignore when I pull.)
* Send a pull request. Bonus points for topic branches.
### Code of Conduct
Please note that this project is released with a [Contributor Code of Conduct](CODE_OF_CONDUCT.md). By participating in this project you agree to abide by its terms.
## Copyright
[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
<MSG> Merge pull request #552 from selfish/patch-1
Update Copyright in README.md
<DFF> @@ -950,4 +950,4 @@ Please note that this project is released with a [Contributor Code of Conduct](C
## Copyright
-[MIT License](LICENSE) © 2018 [Andrew Nesbitt](https://github.com/andrew).
+[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
| 1 | Merge pull request #552 from selfish/patch-1 | 1 | .md | md | mit | splitrb/split |
10070870 | <NME> README.md
<BEF> # [Split](https://libraries.io/rubygems/split)
[](http://badge.fury.io/rb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://codeclimate.com/github/splitrb/split/coverage)
[](https://github.com/RichardLitt/standard-readme)
[](https://www.codetriage.com/splitrb/split)
> 📈 The Rack Based A/B testing framework https://libraries.io/rubygems/split
Split is a rack based A/B testing framework designed to work with Rails, Sinatra or any other rack based app.
Split is heavily inspired by the [Abingo](https://github.com/ryanb/abingo) and [Vanity](https://github.com/assaf/vanity) Rails A/B testing plugins and [Resque](https://github.com/resque/resque) in its use of Redis.
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
## Install
### Requirements
Split v4.0+ is currently tested with Ruby >= 2.5 and Rails >= 5.2.
If your project requires compatibility with Ruby 2.4.x or older Rails versions. You can try v3.0 or v0.8.0(for Ruby 1.9.3)
Split uses Redis as a datastore.
Split only supports Redis 4.0 or greater.
If you're on OS X, Homebrew is the simplest way to install Redis:
```bash
brew install redis
redis-server /usr/local/etc/redis.conf
```
You now have a Redis daemon running on port `6379`.
### Setup
```bash
gem install split
```
#### Rails
Adding `gem 'split'` to your Gemfile will autoload it when rails starts up, as long as you've configured Redis it will 'just work'.
#### Sinatra
To configure Sinatra with Split you need to enable sessions and mix in the helper methods. Add the following lines at the top of your Sinatra app:
```ruby
require 'split'
class MySinatraApp < Sinatra::Base
enable :sessions
helpers Split::Helper
get '/' do
...
end
```
## Usage
To begin your A/B test use the `ab_test` method, naming your experiment with the first argument and then the different alternatives which you wish to test on as the other arguments.
`ab_test` returns one of the alternatives, if a user has already seen that test they will get the same alternative as before, which you can use to split your code on.
It can be used to render different templates, show different text or any other case based logic.
`ab_finished` is used to make a completion of an experiment, or conversion.
Example: View
```erb
<% ab_test(:login_button, "/images/button1.jpg", "/images/button2.jpg") do |button_file| %>
<%= image_tag(button_file, alt: "Login!") %>
<% end %>
```
Example: Controller
```ruby
def register_new_user
# See what level of free points maximizes users' decision to buy replacement points.
@starter_points = ab_test(:new_user_free_points, '100', '200', '300')
end
```
Example: Conversion tracking (in a controller!)
```ruby
def buy_new_points
# some business logic
ab_finished(:new_user_free_points)
end
```
Example: Conversion tracking (in a view)
```erb
Thanks for signing up, dude! <% ab_finished(:signup_page_redesign) %>
```
You can find more examples, tutorials and guides on the [wiki](https://github.com/splitrb/split/wiki).
## Statistical Validity
Split has two options for you to use to determine which alternative is the best.
The first option (default on the dashboard) uses a z test (n>30) for the difference between your control and alternative conversion rates to calculate statistical significance. This test will tell you whether an alternative is better or worse than your control, but it will not distinguish between which alternative is the best in an experiment with multiple alternatives. Split will only tell you if your experiment is 90%, 95%, or 99% significant, and this test only works if you have more than 30 participants and 5 conversions for each branch.
As per this [blog post](https://www.evanmiller.org/how-not-to-run-an-ab-test.html) on the pitfalls of A/B testing, it is highly recommended that you determine your requisite sample size for each branch before running the experiment. Otherwise, you'll have an increased rate of false positives (experiments which show a significant effect where really there is none).
[Here](https://www.evanmiller.org/ab-testing/sample-size.html) is a sample size calculator for your convenience.
The second option uses simulations from a beta distribution to determine the probability that the given alternative is the winner compared to all other alternatives. You can view these probabilities by clicking on the drop-down menu labeled "Confidence." This option should be used when the experiment has more than just 1 control and 1 alternative. It can also be used for a simple, 2-alternative A/B test.
Calculating the beta-distribution simulations for a large number of experiments can be slow, so the results are cached. You can specify how often they should be recalculated (the default is once per day).
```ruby
Split.configure do |config|
config.winning_alternative_recalculation_interval = 3600 # 1 hour
end
```
## Extras
### Weighted alternatives
Perhaps you only want to show an alternative to 10% of your visitors because it is very experimental or not yet fully load tested.
To do this you can pass a weight with each alternative in the following ways:
```ruby
ab_test(:homepage_design, {'Old' => 18}, {'New' => 2})
ab_test(:homepage_design, 'Old', {'New' => 1.0/9})
ab_test(:homepage_design, {'Old' => 9}, 'New')
```
This will only show the new alternative to visitors 1 in 10 times, the default weight for an alternative is 1.
### Overriding alternatives
For development and testing, you may wish to force your app to always return an alternative.
You can do this by passing it as a parameter in the url.
If you have an experiment called `button_color` with alternatives called `red` and `blue` used on your homepage, a url such as:
http://myawesomesite.com?ab_test[button_color]=red
will always have red buttons. This won't be stored in your session or count towards to results, unless you set the `store_override` configuration option.
In the event you want to disable all tests without having to know the individual experiment names, add a `SPLIT_DISABLE` query parameter.
http://myawesomesite.com?SPLIT_DISABLE=true
It is not required to send `SPLIT_DISABLE=false` to activate Split.
### Rspec Helper
To aid testing with RSpec, write `spec/support/split_helper.rb` and call `use_ab_test(alternatives_by_experiment)` in your specs as instructed below:
```ruby
# Create a file with these contents at 'spec/support/split_helper.rb'
# and ensure it is `require`d in your rails_helper.rb or spec_helper.rb
module SplitHelper
# Force a specific experiment alternative to always be returned:
# use_ab_test(signup_form: "single_page")
#
# Force alternatives for multiple experiments:
# use_ab_test(signup_form: "single_page", pricing: "show_enterprise_prices")
#
def use_ab_test(alternatives_by_experiment)
allow_any_instance_of(Split::Helper).to receive(:ab_test) do |_receiver, experiment, &block|
variant = alternatives_by_experiment.fetch(experiment) { |key| raise "Unknown experiment '#{key}'" }
block.call(variant) unless block.nil?
variant
end
end
end
# Make the `use_ab_test` method available to all specs:
RSpec.configure do |config|
config.include SplitHelper
end
```
Now you can call `use_ab_test(alternatives_by_experiment)` in your specs, for example:
```ruby
it "registers using experimental signup" do
use_ab_test experiment_name: "alternative_name"
post "/signups"
...
end
```
### Starting experiments manually
By default new A/B tests will be active right after deployment. In case you would like to start new test a while after
the deploy, you can do it by setting the `start_manually` configuration option to `true`.
After choosing this option tests won't be started right after deploy, but after pressing the `Start` button in Split admin dashboard. If a test is deleted from the Split dashboard, then it can only be started after pressing the `Start` button whenever being re-initialized.
### Reset after completion
When a user completes a test their session is reset so that they may start the test again in the future.
To stop this behaviour you can pass the following option to the `ab_finished` method:
```ruby
ab_finished(:experiment_name, reset: false)
```
The user will then always see the alternative they started with.
Any old unfinished experiment key will be deleted from the user's data storage if the experiment had been removed or is over and a winner had been chosen. This allows a user to enroll into any new experiment in cases when the `allow_multiple_experiments` config option is set to `false`.
### Reset experiments manually
By default Split automatically resets the experiment whenever it detects the configuration for an experiment has changed (e.g. you call `ab_test` with different alternatives). You can prevent this by setting the option `reset_manually` to `true`.
You may want to do this when you want to change something, like the variants' names, the metadata about an experiment, etc. without resetting everything.
### Multiple experiments at once
By default Split will avoid users participating in multiple experiments at once. This means you are less likely to skew results by adding in more variation to your tests.
To stop this behaviour and allow users to participate in multiple experiments at once set the `allow_multiple_experiments` config option to true like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = true
end
```
This will allow the user to participate in any number of experiments and belong to any alternative in each experiment. This has the possible downside of a variation in one experiment influencing the outcome of another.
To address this, setting the `allow_multiple_experiments` config option to 'control' like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = 'control'
end
```
For this to work, each and every experiment you define must have an alternative named 'control'. This will allow the user to participate in multiple experiments as long as the user belongs to the alternative 'control' in each experiment. As soon as the user belongs to an alternative named something other than 'control' the user may not participate in any more experiments. Calling ab_test(<other experiments>) will always return the first alternative without adding the user to that experiment.
### Experiment Persistence
Split comes with three built-in persistence adapters for storing users and the alternatives they've been given for each experiment.
By default Split will store the tests for each user in the session.
You can optionally configure Split to use a cookie, Redis, or any custom adapter of your choosing.
#### Cookies
```ruby
Split.configure do |config|
config.persistence = :cookie
end
```
When using the cookie persistence, Split stores data into an anonymous tracking cookie named 'split', which expires in 1 year. To change that, set the `persistence_cookie_length` in the configuration (unit of time in seconds).
```ruby
Split.configure do |config|
config.persistence = :cookie
config.persistence_cookie_length = 2592000 # 30 days
end
```
The data stored consists of the experiment name and the variants the user is in. Example: { "experiment_name" => "variant_a" }
__Note:__ Using cookies depends on `ActionDispatch::Cookies` or any identical API
#### Redis
Using Redis will allow ab_users to persist across sessions or machines.
```ruby
Split.configure do |config|
config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: -> (context) { context.current_user_id })
# Equivalent
# config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: :current_user_id)
end
```
Options:
* `lookup_by`: method to invoke per request for uniquely identifying ab_users (mandatory configuration)
* `namespace`: separate namespace to store these persisted values (default "persistence")
* `expire_seconds`: sets TTL for user key. (if a user is in multiple experiments most recent update will reset TTL for all their assignments)
#### Dual Adapter
The Dual Adapter allows the use of different persistence adapters for logged-in and logged-out users. A common use case is to use Redis for logged-in users and Cookies for logged-out users.
```ruby
cookie_adapter = Split::Persistence::CookieAdapter
redis_adapter = Split::Persistence::RedisAdapter.with_config(
lookup_by: -> (context) { context.send(:current_user).try(:id) },
expire_seconds: 2592000)
Split.configure do |config|
config.persistence = Split::Persistence::DualAdapter.with_config(
logged_in: -> (context) { !context.send(:current_user).try(:id).nil? },
logged_in_adapter: redis_adapter,
logged_out_adapter: cookie_adapter)
config.persistence_cookie_length = 2592000 # 30 days
end
```
#### Custom Adapter
Your custom adapter needs to implement the same API as existing adapters.
See `Split::Persistence::CookieAdapter` or `Split::Persistence::SessionAdapter` for a starting point.
```ruby
Split.configure do |config|
config.persistence = YourCustomAdapterClass
end
```
### Trial Event Hooks
You can define methods that will be called at the same time as experiment
alternative participation and goal completion.
For example:
``` ruby
Split.configure do |config|
config.on_trial = :log_trial # run on every trial
config.on_trial_choose = :log_trial_choose # run on trials with new users only
config.on_trial_complete = :log_trial_complete
end
```
Set these attributes to a method name available in the same context as the
`ab_test` method. These methods should accept one argument, a `Trial` instance.
``` ruby
def log_trial(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_choose(trial)
logger.info "[new user] experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_complete(trial)
logger.info "experiment=%s alternative=%s user=%s complete=true" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
#### Views
If you are running `ab_test` from a view, you must define your event
hook callback as a
[helper_method](https://apidock.com/rails/AbstractController/Helpers/ClassMethods/helper_method)
in the controller:
``` ruby
helper_method :log_trial_choose
def log_trial_choose(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
### Experiment Hooks
You can assign a proc that will be called when an experiment is reset or deleted. You can use these hooks to call methods within your application to keep data related to experiments in sync with Split.
For example:
``` ruby
Split.configure do |config|
# after experiment reset or deleted
config.on_experiment_reset = -> (example) { # Do something on reset }
config.on_experiment_delete = -> (experiment) { # Do something else on delete }
# before experiment reset or deleted
config.on_before_experiment_reset = -> (example) { # Do something on reset }
config.on_before_experiment_delete = -> (experiment) { # Do something else on delete }
# after experiment winner had been set
config.on_experiment_winner_choose = -> (experiment) { # Do something on winner choose }
end
```
## Web Interface
Split comes with a Sinatra-based front end to get an overview of how your experiments are doing.
If you are running Rails 2: You can mount this inside your app using Rack::URLMap in your `config.ru`
```ruby
require 'split/dashboard'
run Rack::URLMap.new \
"/" => Your::App.new,
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
```
Then adding this to config/routes.rb
```ruby
mount Split::Dashboard, at: 'split'
```
You may want to password protect that page, you can do so with `Rack::Auth::Basic` (in your split initializer file)
```ruby
# Rails apps or apps that already depend on activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
# Apps without activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
```
You can even use Devise or any other Warden-based authentication method to authorize users. Just replace `mount Split::Dashboard, :at => 'split'` in `config/routes.rb` with the following:
```ruby
match "/split" => Split::Dashboard, anchor: false, via: [:get, :post, :delete], constraints: -> (request) do
request.env['warden'].authenticated? # are we authenticated?
request.env['warden'].authenticate! # authenticate if not already
# or even check any other condition such as request.env['warden'].user.is_admin?
end
```
More information on this [here](https://steve.dynedge.co.uk/2011/12/09/controlling-access-to-routes-and-rack-apps-in-rails-3-with-devise-and-warden/)
### Screenshot
## Configuration
You can override the default configuration options of Split like so:
```ruby
Split.configure do |config|
config.db_failover = true # handle Redis errors gracefully
config.db_failover_on_db_error = -> (error) { Rails.logger.error(error.message) }
config.allow_multiple_experiments = true
config.enabled = true
config.persistence = Split::Persistence::SessionAdapter
#config.start_manually = false ## new test will have to be started manually from the admin panel. default false
#config.reset_manually = false ## if true, it never resets the experiment data, even if the configuration changes
config.include_rails_helper = true
config.redis = "redis://custom.redis.url:6380"
end
```
Split looks for the Redis host in the environment variable `REDIS_URL` then
defaults to `redis://localhost:6379` if not specified by configure block.
On platforms like Heroku, Split will use the value of `REDIS_PROVIDER` to
determine which env variable key to use when retrieving the host config. This
defaults to `REDIS_URL`.
### Filtering
In most scenarios you don't want to have AB-Testing enabled for web spiders, robots or special groups of users.
Split provides functionality to filter this based on a predefined, extensible list of bots, IP-lists or custom exclude logic.
```ruby
Split.configure do |config|
# bot config
config.robot_regex = /my_custom_robot_regex/ # or
config.bots['newbot'] = "Description for bot with 'newbot' user agent, which will be added to config.robot_regex for exclusion"
# IP config
config.ignore_ip_addresses << '81.19.48.130' # or regex: /81\.19\.48\.[0-9]+/
# or provide your own filter functionality, the default is proc{ |request| is_robot? || is_ignored_ip_address? || is_preview? }
config.ignore_filter = -> (request) { CustomExcludeLogic.excludes?(request) }
end
```
### Experiment configuration
Instead of providing the experiment options inline, you can store them
in a hash. This hash can control your experiment's alternatives, weights,
algorithm and if the experiment resets once finished:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
resettable: false
},
:my_second_experiment => {
algorithm: 'Split::Algorithms::Whiplash',
alternatives: [
{ name: "a", percent: 67 },
{ name: "b", percent: 33 }
]
}
}
end
```
You can also store your experiments in a YAML file:
```ruby
Split.configure do |config|
config.experiments = YAML.load_file "config/experiments.yml"
end
```
You can then define the YAML file like:
```yaml
my_first_experiment:
alternatives:
- a
- b
my_second_experiment:
alternatives:
- name: a
percent: 67
- name: b
percent: 33
resettable: false
```
This simplifies the calls from your code:
```ruby
ab_test(:my_first_experiment)
```
and:
```ruby
ab_finished(:my_first_experiment)
```
You can also add meta data for each experiment, which is very useful when you need more than an alternative name to change behaviour:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metadata: {
"a" => {"text" => "Have a fantastic day"},
"b" => {"text" => "Don't get hit by a bus"}
}
}
}
end
```
```yaml
my_first_experiment:
alternatives:
- a
- b
metadata:
a:
text: "Have a fantastic day"
b:
text: "Don't get hit by a bus"
```
This allows for some advanced experiment configuration using methods like:
```ruby
trial.alternative.name # => "a"
trial.metadata['text'] # => "Have a fantastic day"
```
or in views:
```erb
<% ab_test("my_first_experiment") do |alternative, meta| %>
<%= alternative %>
<small><%= meta['text'] %></small>
<% end %>
```
The keys used in meta data should be Strings
#### Metrics
You might wish to track generic metrics, such as conversions, and use
those to complete multiple different experiments without adding more to
your code. You can use the configuration hash to do this, thanks to
the `:metric` option.
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metric: :my_metric
}
}
end
```
Your code may then track a completion using the metric instead of
the experiment name:
```ruby
ab_finished(:my_metric)
```
You can also create a new metric by instantiating and saving a new Metric object.
```ruby
Split::Metric.new(:my_metric)
Split::Metric.save
```
#### Goals
You might wish to allow an experiment to have multiple, distinguishable goals.
The API to define goals for an experiment is this:
```ruby
ab_test({link_color: ["purchase", "refund"]}, "red", "blue")
```
or you can define them in a configuration file:
```ruby
Split.configure do |config|
config.experiments = {
link_color: {
alternatives: ["red", "blue"],
goals: ["purchase", "refund"]
}
}
end
```
To complete a goal conversion, you do it like:
```ruby
ab_finished(link_color: "purchase")
```
Note that if you pass additional options, that should be a separate hash:
```ruby
ab_finished({ link_color: "purchase" }, reset: false)
```
**NOTE:** This does not mean that a single experiment can complete more than one goal.
Once you finish one of the goals, the test is considered to be completed, and finishing the other goal will no longer register. (Assuming the test runs with `reset: false`.)
**Good Example**: Test if listing Plan A first result in more conversions to Plan A (goal: "plana_conversion") or Plan B (goal: "planb_conversion").
**Bad Example**: Test if button color increases conversion rate through multiple steps of a funnel. THIS WILL NOT WORK.
**Bad Example**: Test both how button color affects signup *and* how it affects login, at the same time. THIS WILL NOT WORK.
#### Combined Experiments
If you want to test how button color affects signup *and* how it affects login at the same time, use combined experiments.
Configure like so:
```ruby
Split.configuration.experiments = {
:button_color_experiment => {
:alternatives => ["blue", "green"],
:combined_experiments => ["button_color_on_signup", "button_color_on_login"]
}
}
```
Starting the combined test starts all combined experiments
```ruby
ab_combined_test(:button_color_experiment)
```
Finish each combined test as normal
```ruby
ab_finished(:button_color_on_login)
ab_finished(:button_color_on_signup)
```
**Additional Configuration**:
* Be sure to enable `allow_multiple_experiments`
* In Sinatra include the CombinedExperimentsHelper
```
helpers Split::CombinedExperimentsHelper
```
### DB failover solution
Due to the fact that Redis has no automatic failover mechanism, it's
possible to switch on the `db_failover` config option, so that `ab_test`
and `ab_finished` will not crash in case of a db failure. `ab_test` always
delivers alternative A (the first one) in that case.
It's also possible to set a `db_failover_on_db_error` callback (proc)
for example to log these errors via Rails.logger.
### Redis
You may want to change the Redis host and port Split connects to, or
set various other options at startup.
Split has a `redis` setter which can be given a string or a Redis
object. This means if you're already using Redis in your app, Split
can re-use the existing connection.
String: `Split.redis = 'redis://localhost:6379'`
Redis: `Split.redis = $redis`
For our rails app we have a `config/initializers/split.rb` file where
we load `config/split.yml` by hand and set the Redis information
appropriately.
Here's our `config/split.yml`:
```yml
development: redis://localhost:6379
test: redis://localhost:6379
staging: redis://redis1.example.com:6379
fi: redis://localhost:6379
production: redis://redis1.example.com:6379
```
And our initializer:
```ruby
split_config = YAML.load_file(Rails.root.join('config', 'split.yml'))
Split.redis = split_config[Rails.env]
```
### Redis Caching (v4.0+)
In some high-volume usage scenarios, Redis load can be incurred by repeated
fetches for fairly static data. Enabling caching will reduce this load.
```ruby
Split.configuration.cache = true
````
This currently caches:
- `Split::ExperimentCatalog.find`
- `Split::Experiment.start_time`
- `Split::Experiment.winner`
## Namespaces
If you're running multiple, separate instances of Split you may want
to namespace the keyspaces so they do not overlap. This is not unlike
the approach taken by many memcached clients.
This feature can be provided by the [redis-namespace](https://github.com/defunkt/redis-namespace)
library. To configure Split to use `Redis::Namespace`, do the following:
1. Add `redis-namespace` to your Gemfile:
```ruby
gem 'redis-namespace'
```
2. Configure `Split.redis` to use a `Redis::Namespace` instance (possible in an
initializer):
```ruby
redis = Redis.new(url: ENV['REDIS_URL']) # or whatever config you want
Split.redis = Redis::Namespace.new(:your_namespace, redis: redis)
```
## Outside of a Web Session
Split provides the Helper module to facilitate running experiments inside web sessions.
Alternatively, you can access the underlying Metric, Trial, Experiment and Alternative objects to
conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
trial.choose!
# get the result, returns either red or blue
trial.alternative.name
# if the goal has been achieved, increment the successful completions for this alternative.
if goal_achieved?
trial.complete!
end
```
## Algorithms
By default, Split ships with `Split::Algorithms::WeightedSample` that randomly selects from possible alternatives for a traditional a/b test.
It is possible to specify static weights to favor certain alternatives.
`Split::Algorithms::Whiplash` is an implementation of a [multi-armed bandit algorithm](http://stevehanov.ca/blog/index.php?id=132).
This algorithm will automatically weight the alternatives based on their relative performance,
choosing the better-performing ones more often as trials are completed.
`Split::Algorithms::BlockRandomization` is an algorithm that ensures equal
participation across all alternatives. This algorithm will choose the alternative
with the fewest participants. In the event of multiple minimum participant alternatives
(i.e. starting a new "Block") the algorithm will choose a random alternative from
those minimum participant alternatives.
Users may also write their own algorithms. The default algorithm may be specified globally in the configuration file, or on a per experiment basis using the experiments hash of the configuration file.
To change the algorithm globally for all experiments, use the following in your initializer:
```ruby
Split.configure do |config|
config.algorithm = Split::Algorithms::Whiplash
end
```
## Extensions
- [Split::Export](https://github.com/splitrb/split-export) - Easily export A/B test data out of Split.
- [Split::Analytics](https://github.com/splitrb/split-analytics) - Push test data to Google Analytics.
- [Split::Mongoid](https://github.com/MongoHQ/split-mongoid) - Store experiment data in mongoid (still uses redis).
- [Split::Cacheable](https://github.com/harrystech/split_cacheable) - Automatically create cache buckets per test.
- [Split::Counters](https://github.com/bernardkroes/split-counters) - Add counters per experiment and alternative.
- [Split::Cli](https://github.com/craigmcnamara/split-cli) - A CLI to trigger Split A/B tests.
## Screencast
Ryan bates has produced an excellent 10 minute screencast about split on the Railscasts site: [A/B Testing with Split](http://railscasts.com/episodes/331-a-b-testing-with-split)
## Blogposts
* [Recipe: A/B testing with KISSMetrics and the split gem](https://robots.thoughtbot.com/post/9595887299/recipe-a-b-testing-with-kissmetrics-and-the-split-gem)
* [Rails A/B testing with Split on Heroku](http://blog.nathanhumbert.com/2012/02/rails-ab-testing-with-split-on-heroku.html)
## Backers
Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/split#backer)]
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## Sponsors
Become a sponsor and get your logo on our README on Github with a link to your site. [[Become a sponsor](https://opencollective.com/split#sponsor)]
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## Contribute
Please do! Over 70 different people have contributed to the project, you can see them all here: https://github.com/splitrb/split/graphs/contributors.
### Development
The source code is hosted at [GitHub](https://github.com/splitrb/split).
Report issues and feature requests on [GitHub Issues](https://github.com/splitrb/split/issues).
You can find a discussion form on [Google Groups](https://groups.google.com/d/forum/split-ruby).
## Copyright
[MIT License](LICENSE) © 2018 [Andrew Nesbitt](https://github.com/andrew).
# Start a Redis server in another tab.
redis-server
bundle
rake spec
### A Note on Patches and Pull Requests
* Fork the project.
* Make your feature addition or bug fix.
* Add tests for it. This is important so I don't break it in a
future version unintentionally.
* Add documentation if necessary.
* Commit. Do not mess with the rakefile, version, or history.
(If you want to have your own version, that is fine. But bump the version in a commit by itself, which I can ignore when I pull.)
* Send a pull request. Bonus points for topic branches.
### Code of Conduct
Please note that this project is released with a [Contributor Code of Conduct](CODE_OF_CONDUCT.md). By participating in this project you agree to abide by its terms.
## Copyright
[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
<MSG> Merge pull request #552 from selfish/patch-1
Update Copyright in README.md
<DFF> @@ -950,4 +950,4 @@ Please note that this project is released with a [Contributor Code of Conduct](C
## Copyright
-[MIT License](LICENSE) © 2018 [Andrew Nesbitt](https://github.com/andrew).
+[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
| 1 | Merge pull request #552 from selfish/patch-1 | 1 | .md | md | mit | splitrb/split |
10070871 | <NME> layout.erb
<BEF> <!DOCTYPE html>
<html>
<head>
<meta content='text/html; charset=utf-8' http-equiv='Content-Type'>
<link href="<%= url 'reset.css' %>" media="screen" rel="stylesheet" type="text/css">
<link href="<%= url 'style.css' %>" media="screen" rel="stylesheet" type="text/css">
<script type="text/javascript" src='<%= url 'dashboard.js' %>'></script>
<script type="text/javascript" src='<%= url 'jquery-1.11.1.min.js' %>'></script>
</head>
<body>
<div class="header"></div>
<div id="main">
<%= yield %>
<div id="main">
<%= yield %>
</div>
<div id="footer">
<p>Powered by <a href="https://github.com/splitrb/split">Split</a> v<%=Split::VERSION %></p>
</div>
</body>
</html>
<MSG> Merge pull request #17 from mrappleton/master
Dashboard design love
<DFF> @@ -9,7 +9,9 @@
</head>
<body>
- <div class="header"></div>
+ <div class="header">
+ <h1>Split Dashboard</h1>
+ </div>
<div id="main">
<%= yield %>
| 3 | Merge pull request #17 from mrappleton/master | 1 | .erb | erb | mit | splitrb/split |
10070872 | <NME> layout.erb
<BEF> <!DOCTYPE html>
<html>
<head>
<meta content='text/html; charset=utf-8' http-equiv='Content-Type'>
<link href="<%= url 'reset.css' %>" media="screen" rel="stylesheet" type="text/css">
<link href="<%= url 'style.css' %>" media="screen" rel="stylesheet" type="text/css">
<script type="text/javascript" src='<%= url 'dashboard.js' %>'></script>
<script type="text/javascript" src='<%= url 'jquery-1.11.1.min.js' %>'></script>
</head>
<body>
<div class="header"></div>
<div id="main">
<%= yield %>
<div id="main">
<%= yield %>
</div>
<div id="footer">
<p>Powered by <a href="https://github.com/splitrb/split">Split</a> v<%=Split::VERSION %></p>
</div>
</body>
</html>
<MSG> Merge pull request #17 from mrappleton/master
Dashboard design love
<DFF> @@ -9,7 +9,9 @@
</head>
<body>
- <div class="header"></div>
+ <div class="header">
+ <h1>Split Dashboard</h1>
+ </div>
<div id="main">
<%= yield %>
| 3 | Merge pull request #17 from mrappleton/master | 1 | .erb | erb | mit | splitrb/split |
10070873 | <NME> layout.erb
<BEF> <!DOCTYPE html>
<html>
<head>
<meta content='text/html; charset=utf-8' http-equiv='Content-Type'>
<link href="<%= url 'reset.css' %>" media="screen" rel="stylesheet" type="text/css">
<link href="<%= url 'style.css' %>" media="screen" rel="stylesheet" type="text/css">
<script type="text/javascript" src='<%= url 'dashboard.js' %>'></script>
<script type="text/javascript" src='<%= url 'jquery-1.11.1.min.js' %>'></script>
</head>
<body>
<div class="header"></div>
<div id="main">
<%= yield %>
<div id="main">
<%= yield %>
</div>
<div id="footer">
<p>Powered by <a href="https://github.com/splitrb/split">Split</a> v<%=Split::VERSION %></p>
</div>
</body>
</html>
<MSG> Merge pull request #17 from mrappleton/master
Dashboard design love
<DFF> @@ -9,7 +9,9 @@
</head>
<body>
- <div class="header"></div>
+ <div class="header">
+ <h1>Split Dashboard</h1>
+ </div>
<div id="main">
<%= yield %>
| 3 | Merge pull request #17 from mrappleton/master | 1 | .erb | erb | mit | splitrb/split |
10070874 | <NME> configuration.rb
<BEF> # frozen_string_literal: true
module Split
class Configuration
attr_accessor :ignore_ip_addresses
attr_accessor :ignore_filter
attr_accessor :db_failover
attr_accessor :db_failover_on_db_error
attr_accessor :db_failover_allow_parameter_override
attr_accessor :allow_multiple_experiments
attr_accessor :enabled
attr_accessor :persistence
attr_accessor :persistence_cookie_length
attr_accessor :persistence_cookie_domain
attr_accessor :algorithm
attr_accessor :store_override
attr_accessor :start_manually
attr_accessor :reset_manually
attr_accessor :on_trial
attr_accessor :on_trial_choose
attr_accessor :on_trial_complete
attr_accessor :on_experiment_reset
attr_accessor :on_experiment_delete
attr_accessor :on_before_experiment_reset
attr_accessor :on_experiment_winner_choose
attr_accessor :on_before_experiment_delete
attr_accessor :include_rails_helper
attr_accessor :beta_probability_simulations
attr_accessor :winning_alternative_recalculation_interval
attr_accessor :redis
attr_accessor :dashboard_pagination_default_per_page
attr_accessor :cache
attr_reader :experiments
attr_writer :bots
attr_writer :robot_regex
def bots
@bots ||= {
# Indexers
"AdsBot-Google" => "Google Adwords",
"Baidu" => "Chinese search engine",
"Baiduspider" => "Chinese search engine",
"bingbot" => "Microsoft bing bot",
"Butterfly" => "Topsy Labs",
"Gigabot" => "Gigabot spider",
"Googlebot" => "Google spider",
"MJ12bot" => "Majestic-12 spider",
"msnbot" => "Microsoft bot",
"rogerbot" => "SeoMoz spider",
"PaperLiBot" => "PaperLi is another content curation service",
"Slurp" => "Yahoo spider",
"Sogou" => "Chinese search engine",
"spider" => "generic web spider",
"UnwindFetchor" => "Gnip crawler",
"WordPress" => "WordPress spider",
"YandexAccessibilityBot" => "Yandex accessibility spider",
"YandexBot" => "Yandex spider",
"YandexMobileBot" => "Yandex mobile spider",
"ZIBB" => "ZIBB spider",
# HTTP libraries
"Apache-HttpClient" => "Java http library",
"AppEngine-Google" => "Google App Engine",
"curl" => "curl unix CLI http client",
"ColdFusion" => "ColdFusion http library",
"EventMachine HttpClient" => "Ruby http library",
"Go http package" => "Go http library",
"Go-http-client" => "Go http library",
"Java" => "Generic Java http library",
"libwww-perl" => "Perl client-server library loved by script kids",
"lwp-trivial" => "Another Perl library loved by script kids",
"Python-urllib" => "Python http library",
"PycURL" => "Python http library",
"Test Certificate Info" => "C http library?",
"Typhoeus" => "Ruby http library",
"Wget" => "wget unix CLI http client",
# URL expanders / previewers
"awe.sm" => "Awe.sm URL expander",
"bitlybot" => "bit.ly bot",
"[email protected]" => "Linkfluence bot",
"facebookexternalhit" => "facebook bot",
"Facebot" => "Facebook crawler",
"Feedfetcher-Google" => "Google Feedfetcher",
"https://developers.google.com/+/web/snippet" => "Google+ Snippet Fetcher",
"LinkedInBot" => "LinkedIn bot",
"LongURL" => "URL expander service",
"NING" => "NING - Yet Another Twitter Swarmer",
"Pinterestbot" => "Pinterest Bot",
"redditbot" => "Reddit Bot",
"ShortLinkTranslate" => "Link shortener",
"Slackbot" => "Slackbot link expander",
"TweetmemeBot" => "TweetMeMe Crawler",
"Twitterbot" => "Twitter URL expander",
"UnwindFetch" => "Gnip URL expander",
"vkShare" => "VKontake Sharer",
# Uptime monitoring
"check_http" => "Nagios monitor",
"GoogleStackdriverMonitoring" => "Google Cloud monitor",
"NewRelicPinger" => "NewRelic monitor",
"Panopta" => "Monitoring service",
"Pingdom" => "Pingdom monitoring",
"SiteUptime" => "Site monitoring services",
"UptimeRobot" => "Monitoring service",
@metrics = {}
if self.experiments
self.experiments.each do |key, value|
metrics = value_for(value, :metric).to_sym rescue nil
Array(metrics).each do |metric_name|
if metric_name
@metrics[metric_name] ||= []
def experiments=(experiments)
raise InvalidExperimentsFormatError.new("Experiments must be a Hash") unless experiments.respond_to?(:keys)
@experiments = experiments
end
def disabled?
!enabled
end
def experiment_for(name)
if normalized_experiments
# TODO symbols
normalized_experiments[name.to_sym]
end
end
def metrics
return @metrics if defined?(@metrics)
@metrics = {}
if self.experiments
self.experiments.each do |key, value|
metrics = value_for(value, :metric) rescue nil
Array(metrics).each do |metric_name|
if metric_name
@metrics[metric_name.to_sym] ||= []
@metrics[metric_name.to_sym] << Split::Experiment.new(key)
end
end
end
end
@metrics
end
def normalized_experiments
return nil if @experiments.nil?
experiment_config = {}
@experiments.keys.each do |name|
experiment_config[name.to_sym] = {}
end
@experiments.each do |experiment_name, settings|
alternatives = if (alts = value_for(settings, :alternatives))
normalize_alternatives(alts)
end
experiment_data = {
alternatives: alternatives,
goals: value_for(settings, :goals),
metadata: value_for(settings, :metadata),
algorithm: value_for(settings, :algorithm),
resettable: value_for(settings, :resettable)
}
experiment_data.each do |name, value|
experiment_config[experiment_name.to_sym][name] = value if value != nil
end
end
experiment_config
end
def normalize_alternatives(alternatives)
given_probability, num_with_probability = alternatives.inject([0, 0]) do |a, v|
p, n = a
if percent = value_for(v, :percent)
[p + percent, n + 1]
else
a
end
end
num_without_probability = alternatives.length - num_with_probability
unassigned_probability = ((100.0 - given_probability) / num_without_probability / 100.0)
if num_with_probability.nonzero?
alternatives = alternatives.map do |v|
if (name = value_for(v, :name)) && (percent = value_for(v, :percent))
{ name => percent / 100.0 }
elsif name = value_for(v, :name)
{ name => unassigned_probability }
else
{ v => unassigned_probability }
end
end
[alternatives.shift, alternatives]
else
alternatives = alternatives.dup
[alternatives.shift, alternatives]
end
end
def robot_regex
@robot_regex ||= /\b(?:#{escaped_bots.join('|')})\b|\A\W*\z/i
end
def initialize
@ignore_ip_addresses = []
@ignore_filter = proc { |request| is_robot? || is_ignored_ip_address? }
@db_failover = false
@db_failover_on_db_error = proc { |error| } # e.g. use Rails logger here
@on_experiment_reset = proc { |experiment| }
@on_experiment_delete = proc { |experiment| }
@on_before_experiment_reset = proc { |experiment| }
@on_before_experiment_delete = proc { |experiment| }
@on_experiment_winner_choose = proc { |experiment| }
@db_failover_allow_parameter_override = false
@allow_multiple_experiments = false
@enabled = true
@experiments = {}
@persistence = Split::Persistence::SessionAdapter
@persistence_cookie_length = 31536000 # One year from now
@persistence_cookie_domain = nil
@algorithm = Split::Algorithms::WeightedSample
@include_rails_helper = true
@beta_probability_simulations = 10000
@winning_alternative_recalculation_interval = 60 * 60 * 24 # 1 day
@redis = ENV.fetch(ENV.fetch("REDIS_PROVIDER", "REDIS_URL"), "redis://localhost:6379")
@dashboard_pagination_default_per_page = 10
end
private
def value_for(hash, key)
if hash.kind_of?(Hash)
hash.has_key?(key.to_s) ? hash[key.to_s] : hash[key.to_sym]
end
end
def escaped_bots
bots.map { |key, _| Regexp.escape(key) }
end
end
end
<MSG> bug fix
<DFF> @@ -109,7 +109,7 @@ module Split
@metrics = {}
if self.experiments
self.experiments.each do |key, value|
- metrics = value_for(value, :metric).to_sym rescue nil
+ metrics = value_for(value, :metric) rescue nil
Array(metrics).each do |metric_name|
if metric_name
@metrics[metric_name] ||= []
| 1 | bug fix | 1 | .rb | rb | mit | splitrb/split |
10070875 | <NME> configuration.rb
<BEF> # frozen_string_literal: true
module Split
class Configuration
attr_accessor :ignore_ip_addresses
attr_accessor :ignore_filter
attr_accessor :db_failover
attr_accessor :db_failover_on_db_error
attr_accessor :db_failover_allow_parameter_override
attr_accessor :allow_multiple_experiments
attr_accessor :enabled
attr_accessor :persistence
attr_accessor :persistence_cookie_length
attr_accessor :persistence_cookie_domain
attr_accessor :algorithm
attr_accessor :store_override
attr_accessor :start_manually
attr_accessor :reset_manually
attr_accessor :on_trial
attr_accessor :on_trial_choose
attr_accessor :on_trial_complete
attr_accessor :on_experiment_reset
attr_accessor :on_experiment_delete
attr_accessor :on_before_experiment_reset
attr_accessor :on_experiment_winner_choose
attr_accessor :on_before_experiment_delete
attr_accessor :include_rails_helper
attr_accessor :beta_probability_simulations
attr_accessor :winning_alternative_recalculation_interval
attr_accessor :redis
attr_accessor :dashboard_pagination_default_per_page
attr_accessor :cache
attr_reader :experiments
attr_writer :bots
attr_writer :robot_regex
def bots
@bots ||= {
# Indexers
"AdsBot-Google" => "Google Adwords",
"Baidu" => "Chinese search engine",
"Baiduspider" => "Chinese search engine",
"bingbot" => "Microsoft bing bot",
"Butterfly" => "Topsy Labs",
"Gigabot" => "Gigabot spider",
"Googlebot" => "Google spider",
"MJ12bot" => "Majestic-12 spider",
"msnbot" => "Microsoft bot",
"rogerbot" => "SeoMoz spider",
"PaperLiBot" => "PaperLi is another content curation service",
"Slurp" => "Yahoo spider",
"Sogou" => "Chinese search engine",
"spider" => "generic web spider",
"UnwindFetchor" => "Gnip crawler",
"WordPress" => "WordPress spider",
"YandexAccessibilityBot" => "Yandex accessibility spider",
"YandexBot" => "Yandex spider",
"YandexMobileBot" => "Yandex mobile spider",
"ZIBB" => "ZIBB spider",
# HTTP libraries
"Apache-HttpClient" => "Java http library",
"AppEngine-Google" => "Google App Engine",
"curl" => "curl unix CLI http client",
"ColdFusion" => "ColdFusion http library",
"EventMachine HttpClient" => "Ruby http library",
"Go http package" => "Go http library",
"Go-http-client" => "Go http library",
"Java" => "Generic Java http library",
"libwww-perl" => "Perl client-server library loved by script kids",
"lwp-trivial" => "Another Perl library loved by script kids",
"Python-urllib" => "Python http library",
"PycURL" => "Python http library",
"Test Certificate Info" => "C http library?",
"Typhoeus" => "Ruby http library",
"Wget" => "wget unix CLI http client",
# URL expanders / previewers
"awe.sm" => "Awe.sm URL expander",
"bitlybot" => "bit.ly bot",
"[email protected]" => "Linkfluence bot",
"facebookexternalhit" => "facebook bot",
"Facebot" => "Facebook crawler",
"Feedfetcher-Google" => "Google Feedfetcher",
"https://developers.google.com/+/web/snippet" => "Google+ Snippet Fetcher",
"LinkedInBot" => "LinkedIn bot",
"LongURL" => "URL expander service",
"NING" => "NING - Yet Another Twitter Swarmer",
"Pinterestbot" => "Pinterest Bot",
"redditbot" => "Reddit Bot",
"ShortLinkTranslate" => "Link shortener",
"Slackbot" => "Slackbot link expander",
"TweetmemeBot" => "TweetMeMe Crawler",
"Twitterbot" => "Twitter URL expander",
"UnwindFetch" => "Gnip URL expander",
"vkShare" => "VKontake Sharer",
# Uptime monitoring
"check_http" => "Nagios monitor",
"GoogleStackdriverMonitoring" => "Google Cloud monitor",
"NewRelicPinger" => "NewRelic monitor",
"Panopta" => "Monitoring service",
"Pingdom" => "Pingdom monitoring",
"SiteUptime" => "Site monitoring services",
"UptimeRobot" => "Monitoring service",
@metrics = {}
if self.experiments
self.experiments.each do |key, value|
metrics = value_for(value, :metric).to_sym rescue nil
Array(metrics).each do |metric_name|
if metric_name
@metrics[metric_name] ||= []
def experiments=(experiments)
raise InvalidExperimentsFormatError.new("Experiments must be a Hash") unless experiments.respond_to?(:keys)
@experiments = experiments
end
def disabled?
!enabled
end
def experiment_for(name)
if normalized_experiments
# TODO symbols
normalized_experiments[name.to_sym]
end
end
def metrics
return @metrics if defined?(@metrics)
@metrics = {}
if self.experiments
self.experiments.each do |key, value|
metrics = value_for(value, :metric) rescue nil
Array(metrics).each do |metric_name|
if metric_name
@metrics[metric_name.to_sym] ||= []
@metrics[metric_name.to_sym] << Split::Experiment.new(key)
end
end
end
end
@metrics
end
def normalized_experiments
return nil if @experiments.nil?
experiment_config = {}
@experiments.keys.each do |name|
experiment_config[name.to_sym] = {}
end
@experiments.each do |experiment_name, settings|
alternatives = if (alts = value_for(settings, :alternatives))
normalize_alternatives(alts)
end
experiment_data = {
alternatives: alternatives,
goals: value_for(settings, :goals),
metadata: value_for(settings, :metadata),
algorithm: value_for(settings, :algorithm),
resettable: value_for(settings, :resettable)
}
experiment_data.each do |name, value|
experiment_config[experiment_name.to_sym][name] = value if value != nil
end
end
experiment_config
end
def normalize_alternatives(alternatives)
given_probability, num_with_probability = alternatives.inject([0, 0]) do |a, v|
p, n = a
if percent = value_for(v, :percent)
[p + percent, n + 1]
else
a
end
end
num_without_probability = alternatives.length - num_with_probability
unassigned_probability = ((100.0 - given_probability) / num_without_probability / 100.0)
if num_with_probability.nonzero?
alternatives = alternatives.map do |v|
if (name = value_for(v, :name)) && (percent = value_for(v, :percent))
{ name => percent / 100.0 }
elsif name = value_for(v, :name)
{ name => unassigned_probability }
else
{ v => unassigned_probability }
end
end
[alternatives.shift, alternatives]
else
alternatives = alternatives.dup
[alternatives.shift, alternatives]
end
end
def robot_regex
@robot_regex ||= /\b(?:#{escaped_bots.join('|')})\b|\A\W*\z/i
end
def initialize
@ignore_ip_addresses = []
@ignore_filter = proc { |request| is_robot? || is_ignored_ip_address? }
@db_failover = false
@db_failover_on_db_error = proc { |error| } # e.g. use Rails logger here
@on_experiment_reset = proc { |experiment| }
@on_experiment_delete = proc { |experiment| }
@on_before_experiment_reset = proc { |experiment| }
@on_before_experiment_delete = proc { |experiment| }
@on_experiment_winner_choose = proc { |experiment| }
@db_failover_allow_parameter_override = false
@allow_multiple_experiments = false
@enabled = true
@experiments = {}
@persistence = Split::Persistence::SessionAdapter
@persistence_cookie_length = 31536000 # One year from now
@persistence_cookie_domain = nil
@algorithm = Split::Algorithms::WeightedSample
@include_rails_helper = true
@beta_probability_simulations = 10000
@winning_alternative_recalculation_interval = 60 * 60 * 24 # 1 day
@redis = ENV.fetch(ENV.fetch("REDIS_PROVIDER", "REDIS_URL"), "redis://localhost:6379")
@dashboard_pagination_default_per_page = 10
end
private
def value_for(hash, key)
if hash.kind_of?(Hash)
hash.has_key?(key.to_s) ? hash[key.to_s] : hash[key.to_sym]
end
end
def escaped_bots
bots.map { |key, _| Regexp.escape(key) }
end
end
end
<MSG> bug fix
<DFF> @@ -109,7 +109,7 @@ module Split
@metrics = {}
if self.experiments
self.experiments.each do |key, value|
- metrics = value_for(value, :metric).to_sym rescue nil
+ metrics = value_for(value, :metric) rescue nil
Array(metrics).each do |metric_name|
if metric_name
@metrics[metric_name] ||= []
| 1 | bug fix | 1 | .rb | rb | mit | splitrb/split |
10070876 | <NME> configuration.rb
<BEF> # frozen_string_literal: true
module Split
class Configuration
attr_accessor :ignore_ip_addresses
attr_accessor :ignore_filter
attr_accessor :db_failover
attr_accessor :db_failover_on_db_error
attr_accessor :db_failover_allow_parameter_override
attr_accessor :allow_multiple_experiments
attr_accessor :enabled
attr_accessor :persistence
attr_accessor :persistence_cookie_length
attr_accessor :persistence_cookie_domain
attr_accessor :algorithm
attr_accessor :store_override
attr_accessor :start_manually
attr_accessor :reset_manually
attr_accessor :on_trial
attr_accessor :on_trial_choose
attr_accessor :on_trial_complete
attr_accessor :on_experiment_reset
attr_accessor :on_experiment_delete
attr_accessor :on_before_experiment_reset
attr_accessor :on_experiment_winner_choose
attr_accessor :on_before_experiment_delete
attr_accessor :include_rails_helper
attr_accessor :beta_probability_simulations
attr_accessor :winning_alternative_recalculation_interval
attr_accessor :redis
attr_accessor :dashboard_pagination_default_per_page
attr_accessor :cache
attr_reader :experiments
attr_writer :bots
attr_writer :robot_regex
def bots
@bots ||= {
# Indexers
"AdsBot-Google" => "Google Adwords",
"Baidu" => "Chinese search engine",
"Baiduspider" => "Chinese search engine",
"bingbot" => "Microsoft bing bot",
"Butterfly" => "Topsy Labs",
"Gigabot" => "Gigabot spider",
"Googlebot" => "Google spider",
"MJ12bot" => "Majestic-12 spider",
"msnbot" => "Microsoft bot",
"rogerbot" => "SeoMoz spider",
"PaperLiBot" => "PaperLi is another content curation service",
"Slurp" => "Yahoo spider",
"Sogou" => "Chinese search engine",
"spider" => "generic web spider",
"UnwindFetchor" => "Gnip crawler",
"WordPress" => "WordPress spider",
"YandexAccessibilityBot" => "Yandex accessibility spider",
"YandexBot" => "Yandex spider",
"YandexMobileBot" => "Yandex mobile spider",
"ZIBB" => "ZIBB spider",
# HTTP libraries
"Apache-HttpClient" => "Java http library",
"AppEngine-Google" => "Google App Engine",
"curl" => "curl unix CLI http client",
"ColdFusion" => "ColdFusion http library",
"EventMachine HttpClient" => "Ruby http library",
"Go http package" => "Go http library",
"Go-http-client" => "Go http library",
"Java" => "Generic Java http library",
"libwww-perl" => "Perl client-server library loved by script kids",
"lwp-trivial" => "Another Perl library loved by script kids",
"Python-urllib" => "Python http library",
"PycURL" => "Python http library",
"Test Certificate Info" => "C http library?",
"Typhoeus" => "Ruby http library",
"Wget" => "wget unix CLI http client",
# URL expanders / previewers
"awe.sm" => "Awe.sm URL expander",
"bitlybot" => "bit.ly bot",
"[email protected]" => "Linkfluence bot",
"facebookexternalhit" => "facebook bot",
"Facebot" => "Facebook crawler",
"Feedfetcher-Google" => "Google Feedfetcher",
"https://developers.google.com/+/web/snippet" => "Google+ Snippet Fetcher",
"LinkedInBot" => "LinkedIn bot",
"LongURL" => "URL expander service",
"NING" => "NING - Yet Another Twitter Swarmer",
"Pinterestbot" => "Pinterest Bot",
"redditbot" => "Reddit Bot",
"ShortLinkTranslate" => "Link shortener",
"Slackbot" => "Slackbot link expander",
"TweetmemeBot" => "TweetMeMe Crawler",
"Twitterbot" => "Twitter URL expander",
"UnwindFetch" => "Gnip URL expander",
"vkShare" => "VKontake Sharer",
# Uptime monitoring
"check_http" => "Nagios monitor",
"GoogleStackdriverMonitoring" => "Google Cloud monitor",
"NewRelicPinger" => "NewRelic monitor",
"Panopta" => "Monitoring service",
"Pingdom" => "Pingdom monitoring",
"SiteUptime" => "Site monitoring services",
"UptimeRobot" => "Monitoring service",
@metrics = {}
if self.experiments
self.experiments.each do |key, value|
metrics = value_for(value, :metric).to_sym rescue nil
Array(metrics).each do |metric_name|
if metric_name
@metrics[metric_name] ||= []
def experiments=(experiments)
raise InvalidExperimentsFormatError.new("Experiments must be a Hash") unless experiments.respond_to?(:keys)
@experiments = experiments
end
def disabled?
!enabled
end
def experiment_for(name)
if normalized_experiments
# TODO symbols
normalized_experiments[name.to_sym]
end
end
def metrics
return @metrics if defined?(@metrics)
@metrics = {}
if self.experiments
self.experiments.each do |key, value|
metrics = value_for(value, :metric) rescue nil
Array(metrics).each do |metric_name|
if metric_name
@metrics[metric_name.to_sym] ||= []
@metrics[metric_name.to_sym] << Split::Experiment.new(key)
end
end
end
end
@metrics
end
def normalized_experiments
return nil if @experiments.nil?
experiment_config = {}
@experiments.keys.each do |name|
experiment_config[name.to_sym] = {}
end
@experiments.each do |experiment_name, settings|
alternatives = if (alts = value_for(settings, :alternatives))
normalize_alternatives(alts)
end
experiment_data = {
alternatives: alternatives,
goals: value_for(settings, :goals),
metadata: value_for(settings, :metadata),
algorithm: value_for(settings, :algorithm),
resettable: value_for(settings, :resettable)
}
experiment_data.each do |name, value|
experiment_config[experiment_name.to_sym][name] = value if value != nil
end
end
experiment_config
end
def normalize_alternatives(alternatives)
given_probability, num_with_probability = alternatives.inject([0, 0]) do |a, v|
p, n = a
if percent = value_for(v, :percent)
[p + percent, n + 1]
else
a
end
end
num_without_probability = alternatives.length - num_with_probability
unassigned_probability = ((100.0 - given_probability) / num_without_probability / 100.0)
if num_with_probability.nonzero?
alternatives = alternatives.map do |v|
if (name = value_for(v, :name)) && (percent = value_for(v, :percent))
{ name => percent / 100.0 }
elsif name = value_for(v, :name)
{ name => unassigned_probability }
else
{ v => unassigned_probability }
end
end
[alternatives.shift, alternatives]
else
alternatives = alternatives.dup
[alternatives.shift, alternatives]
end
end
def robot_regex
@robot_regex ||= /\b(?:#{escaped_bots.join('|')})\b|\A\W*\z/i
end
def initialize
@ignore_ip_addresses = []
@ignore_filter = proc { |request| is_robot? || is_ignored_ip_address? }
@db_failover = false
@db_failover_on_db_error = proc { |error| } # e.g. use Rails logger here
@on_experiment_reset = proc { |experiment| }
@on_experiment_delete = proc { |experiment| }
@on_before_experiment_reset = proc { |experiment| }
@on_before_experiment_delete = proc { |experiment| }
@on_experiment_winner_choose = proc { |experiment| }
@db_failover_allow_parameter_override = false
@allow_multiple_experiments = false
@enabled = true
@experiments = {}
@persistence = Split::Persistence::SessionAdapter
@persistence_cookie_length = 31536000 # One year from now
@persistence_cookie_domain = nil
@algorithm = Split::Algorithms::WeightedSample
@include_rails_helper = true
@beta_probability_simulations = 10000
@winning_alternative_recalculation_interval = 60 * 60 * 24 # 1 day
@redis = ENV.fetch(ENV.fetch("REDIS_PROVIDER", "REDIS_URL"), "redis://localhost:6379")
@dashboard_pagination_default_per_page = 10
end
private
def value_for(hash, key)
if hash.kind_of?(Hash)
hash.has_key?(key.to_s) ? hash[key.to_s] : hash[key.to_sym]
end
end
def escaped_bots
bots.map { |key, _| Regexp.escape(key) }
end
end
end
<MSG> bug fix
<DFF> @@ -109,7 +109,7 @@ module Split
@metrics = {}
if self.experiments
self.experiments.each do |key, value|
- metrics = value_for(value, :metric).to_sym rescue nil
+ metrics = value_for(value, :metric) rescue nil
Array(metrics).each do |metric_name|
if metric_name
@metrics[metric_name] ||= []
| 1 | bug fix | 1 | .rb | rb | mit | splitrb/split |
10070877 | <NME> README.md
<BEF> # [Split](https://libraries.io/rubygems/split)
[](http://badge.fury.io/rb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://codeclimate.com/github/splitrb/split/coverage)
[](https://github.com/RichardLitt/standard-readme)
[](https://www.codetriage.com/splitrb/split)
> 📈 The Rack Based A/B testing framework https://libraries.io/rubygems/split
Split is a rack based A/B testing framework designed to work with Rails, Sinatra or any other rack based app.
Split is heavily inspired by the [Abingo](https://github.com/ryanb/abingo) and [Vanity](https://github.com/assaf/vanity) Rails A/B testing plugins and [Resque](https://github.com/resque/resque) in its use of Redis.
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
## Install
### Requirements
Split v4.0+ is currently tested with Ruby >= 2.5 and Rails >= 5.2.
If your project requires compatibility with Ruby 2.4.x or older Rails versions. You can try v3.0 or v0.8.0(for Ruby 1.9.3)
Split uses Redis as a datastore.
Split only supports Redis 4.0 or greater.
If you're on OS X, Homebrew is the simplest way to install Redis:
```bash
brew install redis
redis-server /usr/local/etc/redis.conf
```
You now have a Redis daemon running on port `6379`.
### Setup
```bash
gem install split
```
#### Rails
Adding `gem 'split'` to your Gemfile will autoload it when rails starts up, as long as you've configured Redis it will 'just work'.
#### Sinatra
To configure Sinatra with Split you need to enable sessions and mix in the helper methods. Add the following lines at the top of your Sinatra app:
```ruby
require 'split'
class MySinatraApp < Sinatra::Base
enable :sessions
helpers Split::Helper
get '/' do
...
end
```
## Usage
To begin your A/B test use the `ab_test` method, naming your experiment with the first argument and then the different alternatives which you wish to test on as the other arguments.
`ab_test` returns one of the alternatives, if a user has already seen that test they will get the same alternative as before, which you can use to split your code on.
It can be used to render different templates, show different text or any other case based logic.
`ab_finished` is used to make a completion of an experiment, or conversion.
Example: View
```erb
<% ab_test(:login_button, "/images/button1.jpg", "/images/button2.jpg") do |button_file| %>
<%= image_tag(button_file, alt: "Login!") %>
<% end %>
```
Example: Controller
```ruby
def register_new_user
# See what level of free points maximizes users' decision to buy replacement points.
@starter_points = ab_test(:new_user_free_points, '100', '200', '300')
end
```
Example: Conversion tracking (in a controller!)
```ruby
def buy_new_points
# some business logic
ab_finished(:new_user_free_points)
end
```
Example: Conversion tracking (in a view)
```erb
Thanks for signing up, dude! <% ab_finished(:signup_page_redesign) %>
```
You can find more examples, tutorials and guides on the [wiki](https://github.com/splitrb/split/wiki).
## Statistical Validity
Split has two options for you to use to determine which alternative is the best.
The first option (default on the dashboard) uses a z test (n>30) for the difference between your control and alternative conversion rates to calculate statistical significance. This test will tell you whether an alternative is better or worse than your control, but it will not distinguish between which alternative is the best in an experiment with multiple alternatives. Split will only tell you if your experiment is 90%, 95%, or 99% significant, and this test only works if you have more than 30 participants and 5 conversions for each branch.
As per this [blog post](https://www.evanmiller.org/how-not-to-run-an-ab-test.html) on the pitfalls of A/B testing, it is highly recommended that you determine your requisite sample size for each branch before running the experiment. Otherwise, you'll have an increased rate of false positives (experiments which show a significant effect where really there is none).
[Here](https://www.evanmiller.org/ab-testing/sample-size.html) is a sample size calculator for your convenience.
The second option uses simulations from a beta distribution to determine the probability that the given alternative is the winner compared to all other alternatives. You can view these probabilities by clicking on the drop-down menu labeled "Confidence." This option should be used when the experiment has more than just 1 control and 1 alternative. It can also be used for a simple, 2-alternative A/B test.
Calculating the beta-distribution simulations for a large number of experiments can be slow, so the results are cached. You can specify how often they should be recalculated (the default is once per day).
```ruby
Split.configure do |config|
config.winning_alternative_recalculation_interval = 3600 # 1 hour
end
```
## Extras
### Weighted alternatives
Perhaps you only want to show an alternative to 10% of your visitors because it is very experimental or not yet fully load tested.
To do this you can pass a weight with each alternative in the following ways:
```ruby
ab_test(:homepage_design, {'Old' => 18}, {'New' => 2})
ab_test(:homepage_design, 'Old', {'New' => 1.0/9})
ab_test(:homepage_design, {'Old' => 9}, 'New')
```
This will only show the new alternative to visitors 1 in 10 times, the default weight for an alternative is 1.
### Overriding alternatives
For development and testing, you may wish to force your app to always return an alternative.
You can do this by passing it as a parameter in the url.
If you have an experiment called `button_color` with alternatives called `red` and `blue` used on your homepage, a url such as:
http://myawesomesite.com?ab_test[button_color]=red
will always have red buttons. This won't be stored in your session or count towards to results, unless you set the `store_override` configuration option.
In the event you want to disable all tests without having to know the individual experiment names, add a `SPLIT_DISABLE` query parameter.
http://myawesomesite.com?SPLIT_DISABLE=true
It is not required to send `SPLIT_DISABLE=false` to activate Split.
### Rspec Helper
To aid testing with RSpec, write `spec/support/split_helper.rb` and call `use_ab_test(alternatives_by_experiment)` in your specs as instructed below:
```ruby
# Create a file with these contents at 'spec/support/split_helper.rb'
# and ensure it is `require`d in your rails_helper.rb or spec_helper.rb
module SplitHelper
# Force a specific experiment alternative to always be returned:
# use_ab_test(signup_form: "single_page")
#
# Force alternatives for multiple experiments:
# use_ab_test(signup_form: "single_page", pricing: "show_enterprise_prices")
#
def use_ab_test(alternatives_by_experiment)
allow_any_instance_of(Split::Helper).to receive(:ab_test) do |_receiver, experiment, &block|
variant = alternatives_by_experiment.fetch(experiment) { |key| raise "Unknown experiment '#{key}'" }
block.call(variant) unless block.nil?
variant
end
end
end
# Make the `use_ab_test` method available to all specs:
RSpec.configure do |config|
config.include SplitHelper
end
```
Now you can call `use_ab_test(alternatives_by_experiment)` in your specs, for example:
```ruby
it "registers using experimental signup" do
use_ab_test experiment_name: "alternative_name"
post "/signups"
...
end
```
### Starting experiments manually
By default new A/B tests will be active right after deployment. In case you would like to start new test a while after
the deploy, you can do it by setting the `start_manually` configuration option to `true`.
After choosing this option tests won't be started right after deploy, but after pressing the `Start` button in Split admin dashboard. If a test is deleted from the Split dashboard, then it can only be started after pressing the `Start` button whenever being re-initialized.
### Reset after completion
When a user completes a test their session is reset so that they may start the test again in the future.
To stop this behaviour you can pass the following option to the `ab_finished` method:
```ruby
ab_finished(:experiment_name, reset: false)
```
The user will then always see the alternative they started with.
Any old unfinished experiment key will be deleted from the user's data storage if the experiment had been removed or is over and a winner had been chosen. This allows a user to enroll into any new experiment in cases when the `allow_multiple_experiments` config option is set to `false`.
### Reset experiments manually
By default Split automatically resets the experiment whenever it detects the configuration for an experiment has changed (e.g. you call `ab_test` with different alternatives). You can prevent this by setting the option `reset_manually` to `true`.
You may want to do this when you want to change something, like the variants' names, the metadata about an experiment, etc. without resetting everything.
### Multiple experiments at once
By default Split will avoid users participating in multiple experiments at once. This means you are less likely to skew results by adding in more variation to your tests.
To stop this behaviour and allow users to participate in multiple experiments at once set the `allow_multiple_experiments` config option to true like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = true
end
```
This will allow the user to participate in any number of experiments and belong to any alternative in each experiment. This has the possible downside of a variation in one experiment influencing the outcome of another.
To address this, setting the `allow_multiple_experiments` config option to 'control' like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = 'control'
end
```
For this to work, each and every experiment you define must have an alternative named 'control'. This will allow the user to participate in multiple experiments as long as the user belongs to the alternative 'control' in each experiment. As soon as the user belongs to an alternative named something other than 'control' the user may not participate in any more experiments. Calling ab_test(<other experiments>) will always return the first alternative without adding the user to that experiment.
### Experiment Persistence
Split comes with three built-in persistence adapters for storing users and the alternatives they've been given for each experiment.
By default Split will store the tests for each user in the session.
You can optionally configure Split to use a cookie, Redis, or any custom adapter of your choosing.
#### Cookies
```ruby
Split.configure do |config|
config.persistence = :cookie
end
```
When using the cookie persistence, Split stores data into an anonymous tracking cookie named 'split', which expires in 1 year. To change that, set the `persistence_cookie_length` in the configuration (unit of time in seconds).
```ruby
Split.configure do |config|
config.persistence = :cookie
config.persistence_cookie_length = 2592000 # 30 days
end
```
The data stored consists of the experiment name and the variants the user is in. Example: { "experiment_name" => "variant_a" }
__Note:__ Using cookies depends on `ActionDispatch::Cookies` or any identical API
#### Redis
Using Redis will allow ab_users to persist across sessions or machines.
```ruby
Split.configure do |config|
config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: -> (context) { context.current_user_id })
# Equivalent
# config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: :current_user_id)
end
```
Options:
* `lookup_by`: method to invoke per request for uniquely identifying ab_users (mandatory configuration)
* `namespace`: separate namespace to store these persisted values (default "persistence")
* `expire_seconds`: sets TTL for user key. (if a user is in multiple experiments most recent update will reset TTL for all their assignments)
#### Dual Adapter
The Dual Adapter allows the use of different persistence adapters for logged-in and logged-out users. A common use case is to use Redis for logged-in users and Cookies for logged-out users.
```ruby
cookie_adapter = Split::Persistence::CookieAdapter
redis_adapter = Split::Persistence::RedisAdapter.with_config(
lookup_by: -> (context) { context.send(:current_user).try(:id) },
expire_seconds: 2592000)
Split.configure do |config|
config.persistence = Split::Persistence::DualAdapter.with_config(
logged_in: -> (context) { !context.send(:current_user).try(:id).nil? },
logged_in_adapter: redis_adapter,
logged_out_adapter: cookie_adapter)
config.persistence_cookie_length = 2592000 # 30 days
end
```
#### Custom Adapter
Your custom adapter needs to implement the same API as existing adapters.
See `Split::Persistence::CookieAdapter` or `Split::Persistence::SessionAdapter` for a starting point.
```ruby
Split.configure do |config|
config.persistence = YourCustomAdapterClass
end
```
### Trial Event Hooks
You can define methods that will be called at the same time as experiment
alternative participation and goal completion.
For example:
``` ruby
Split.configure do |config|
config.on_trial = :log_trial # run on every trial
config.on_trial_choose = :log_trial_choose # run on trials with new users only
config.on_trial_complete = :log_trial_complete
end
```
Set these attributes to a method name available in the same context as the
`ab_test` method. These methods should accept one argument, a `Trial` instance.
``` ruby
def log_trial(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_choose(trial)
logger.info "[new user] experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_complete(trial)
logger.info "experiment=%s alternative=%s user=%s complete=true" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
#### Views
If you are running `ab_test` from a view, you must define your event
hook callback as a
[helper_method](https://apidock.com/rails/AbstractController/Helpers/ClassMethods/helper_method)
in the controller:
``` ruby
helper_method :log_trial_choose
def log_trial_choose(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
### Experiment Hooks
You can assign a proc that will be called when an experiment is reset or deleted. You can use these hooks to call methods within your application to keep data related to experiments in sync with Split.
For example:
``` ruby
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
# after experiment winner had been set
config.on_experiment_winner_choose = -> (experiment) { # Do something on winner choose }
end
```
## Web Interface
Split comes with a Sinatra-based front end to get an overview of how your experiments are doing.
If you are running Rails 2: You can mount this inside your app using Rack::URLMap in your `config.ru`
```ruby
require 'split/dashboard'
run Rack::URLMap.new \
"/" => Your::App.new,
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
```
Then adding this to config/routes.rb
```ruby
mount Split::Dashboard, at: 'split'
```
You may want to password protect that page, you can do so with `Rack::Auth::Basic` (in your split initializer file)
```ruby
# Rails apps or apps that already depend on activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
# Apps without activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
```
You can even use Devise or any other Warden-based authentication method to authorize users. Just replace `mount Split::Dashboard, :at => 'split'` in `config/routes.rb` with the following:
```ruby
match "/split" => Split::Dashboard, anchor: false, via: [:get, :post, :delete], constraints: -> (request) do
request.env['warden'].authenticated? # are we authenticated?
request.env['warden'].authenticate! # authenticate if not already
# or even check any other condition such as request.env['warden'].user.is_admin?
end
```
More information on this [here](https://steve.dynedge.co.uk/2011/12/09/controlling-access-to-routes-and-rack-apps-in-rails-3-with-devise-and-warden/)
### Screenshot
## Configuration
You can override the default configuration options of Split like so:
```ruby
Split.configure do |config|
config.db_failover = true # handle Redis errors gracefully
config.db_failover_on_db_error = -> (error) { Rails.logger.error(error.message) }
config.allow_multiple_experiments = true
config.enabled = true
config.persistence = Split::Persistence::SessionAdapter
#config.start_manually = false ## new test will have to be started manually from the admin panel. default false
#config.reset_manually = false ## if true, it never resets the experiment data, even if the configuration changes
config.include_rails_helper = true
config.redis = "redis://custom.redis.url:6380"
end
```
Split looks for the Redis host in the environment variable `REDIS_URL` then
defaults to `redis://localhost:6379` if not specified by configure block.
On platforms like Heroku, Split will use the value of `REDIS_PROVIDER` to
determine which env variable key to use when retrieving the host config. This
defaults to `REDIS_URL`.
### Filtering
In most scenarios you don't want to have AB-Testing enabled for web spiders, robots or special groups of users.
Split provides functionality to filter this based on a predefined, extensible list of bots, IP-lists or custom exclude logic.
```ruby
Split.configure do |config|
# bot config
config.robot_regex = /my_custom_robot_regex/ # or
config.bots['newbot'] = "Description for bot with 'newbot' user agent, which will be added to config.robot_regex for exclusion"
# IP config
config.ignore_ip_addresses << '81.19.48.130' # or regex: /81\.19\.48\.[0-9]+/
# or provide your own filter functionality, the default is proc{ |request| is_robot? || is_ignored_ip_address? || is_preview? }
config.ignore_filter = -> (request) { CustomExcludeLogic.excludes?(request) }
end
```
### Experiment configuration
Instead of providing the experiment options inline, you can store them
in a hash. This hash can control your experiment's alternatives, weights,
algorithm and if the experiment resets once finished:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
resettable: false
},
:my_second_experiment => {
algorithm: 'Split::Algorithms::Whiplash',
alternatives: [
{ name: "a", percent: 67 },
{ name: "b", percent: 33 }
]
}
}
end
```
You can also store your experiments in a YAML file:
```ruby
Split.configure do |config|
config.experiments = YAML.load_file "config/experiments.yml"
end
```
You can then define the YAML file like:
```yaml
my_first_experiment:
alternatives:
- a
- b
my_second_experiment:
alternatives:
- name: a
percent: 67
- name: b
percent: 33
resettable: false
```
This simplifies the calls from your code:
```ruby
ab_test(:my_first_experiment)
```
and:
```ruby
ab_finished(:my_first_experiment)
```
You can also add meta data for each experiment, which is very useful when you need more than an alternative name to change behaviour:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metadata: {
"a" => {"text" => "Have a fantastic day"},
"b" => {"text" => "Don't get hit by a bus"}
}
}
}
end
```
```yaml
my_first_experiment:
alternatives:
- a
- b
metadata:
a:
text: "Have a fantastic day"
b:
text: "Don't get hit by a bus"
```
This allows for some advanced experiment configuration using methods like:
```ruby
trial.alternative.name # => "a"
trial.metadata['text'] # => "Have a fantastic day"
```
or in views:
```erb
<% ab_test("my_first_experiment") do |alternative, meta| %>
<%= alternative %>
<small><%= meta['text'] %></small>
<% end %>
```
The keys used in meta data should be Strings
#### Metrics
You might wish to track generic metrics, such as conversions, and use
those to complete multiple different experiments without adding more to
your code. You can use the configuration hash to do this, thanks to
the `:metric` option.
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metric: :my_metric
}
}
end
```
Your code may then track a completion using the metric instead of
the experiment name:
```ruby
ab_finished(:my_metric)
```
You can also create a new metric by instantiating and saving a new Metric object.
```ruby
Split::Metric.new(:my_metric)
Split::Metric.save
```
#### Goals
You might wish to allow an experiment to have multiple, distinguishable goals.
The API to define goals for an experiment is this:
```ruby
ab_test({link_color: ["purchase", "refund"]}, "red", "blue")
```
or you can define them in a configuration file:
```ruby
Split.configure do |config|
config.experiments = {
link_color: {
alternatives: ["red", "blue"],
goals: ["purchase", "refund"]
}
}
end
```
To complete a goal conversion, you do it like:
```ruby
ab_finished(link_color: "purchase")
```
Note that if you pass additional options, that should be a separate hash:
```ruby
ab_finished({ link_color: "purchase" }, reset: false)
```
**NOTE:** This does not mean that a single experiment can complete more than one goal.
Once you finish one of the goals, the test is considered to be completed, and finishing the other goal will no longer register. (Assuming the test runs with `reset: false`.)
**Good Example**: Test if listing Plan A first result in more conversions to Plan A (goal: "plana_conversion") or Plan B (goal: "planb_conversion").
**Bad Example**: Test if button color increases conversion rate through multiple steps of a funnel. THIS WILL NOT WORK.
**Bad Example**: Test both how button color affects signup *and* how it affects login, at the same time. THIS WILL NOT WORK.
#### Combined Experiments
If you want to test how button color affects signup *and* how it affects login at the same time, use combined experiments.
Configure like so:
```ruby
Split.configuration.experiments = {
:button_color_experiment => {
:alternatives => ["blue", "green"],
:combined_experiments => ["button_color_on_signup", "button_color_on_login"]
}
}
```
Starting the combined test starts all combined experiments
```ruby
ab_combined_test(:button_color_experiment)
```
Finish each combined test as normal
```ruby
ab_finished(:button_color_on_login)
ab_finished(:button_color_on_signup)
```
**Additional Configuration**:
* Be sure to enable `allow_multiple_experiments`
* In Sinatra include the CombinedExperimentsHelper
```
helpers Split::CombinedExperimentsHelper
```
### DB failover solution
Due to the fact that Redis has no automatic failover mechanism, it's
possible to switch on the `db_failover` config option, so that `ab_test`
and `ab_finished` will not crash in case of a db failure. `ab_test` always
delivers alternative A (the first one) in that case.
It's also possible to set a `db_failover_on_db_error` callback (proc)
for example to log these errors via Rails.logger.
### Redis
You may want to change the Redis host and port Split connects to, or
set various other options at startup.
Split has a `redis` setter which can be given a string or a Redis
object. This means if you're already using Redis in your app, Split
can re-use the existing connection.
String: `Split.redis = 'redis://localhost:6379'`
Redis: `Split.redis = $redis`
For our rails app we have a `config/initializers/split.rb` file where
we load `config/split.yml` by hand and set the Redis information
appropriately.
Here's our `config/split.yml`:
```yml
development: redis://localhost:6379
test: redis://localhost:6379
staging: redis://redis1.example.com:6379
fi: redis://localhost:6379
production: redis://redis1.example.com:6379
```
And our initializer:
```ruby
split_config = YAML.load_file(Rails.root.join('config', 'split.yml'))
Split.redis = split_config[Rails.env]
```
### Redis Caching (v4.0+)
In some high-volume usage scenarios, Redis load can be incurred by repeated
fetches for fairly static data. Enabling caching will reduce this load.
```ruby
Split.configuration.cache = true
````
This currently caches:
- `Split::ExperimentCatalog.find`
- `Split::Experiment.start_time`
- `Split::Experiment.winner`
## Namespaces
If you're running multiple, separate instances of Split you may want
to namespace the keyspaces so they do not overlap. This is not unlike
the approach taken by many memcached clients.
This feature can be provided by the [redis-namespace](https://github.com/defunkt/redis-namespace)
library. To configure Split to use `Redis::Namespace`, do the following:
1. Add `redis-namespace` to your Gemfile:
```ruby
gem 'redis-namespace'
```
2. Configure `Split.redis` to use a `Redis::Namespace` instance (possible in an
initializer):
```ruby
redis = Redis.new(url: ENV['REDIS_URL']) # or whatever config you want
Split.redis = Redis::Namespace.new(:your_namespace, redis: redis)
```
## Outside of a Web Session
Split provides the Helper module to facilitate running experiments inside web sessions.
Alternatively, you can access the underlying Metric, Trial, Experiment and Alternative objects to
conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
trial.choose!
# get the result, returns either red or blue
trial.alternative.name
# if the goal has been achieved, increment the successful completions for this alternative.
if goal_achieved?
trial.complete!
end
```
## Algorithms
By default, Split ships with `Split::Algorithms::WeightedSample` that randomly selects from possible alternatives for a traditional a/b test.
It is possible to specify static weights to favor certain alternatives.
`Split::Algorithms::Whiplash` is an implementation of a [multi-armed bandit algorithm](http://stevehanov.ca/blog/index.php?id=132).
This algorithm will automatically weight the alternatives based on their relative performance,
choosing the better-performing ones more often as trials are completed.
`Split::Algorithms::BlockRandomization` is an algorithm that ensures equal
participation across all alternatives. This algorithm will choose the alternative
with the fewest participants. In the event of multiple minimum participant alternatives
(i.e. starting a new "Block") the algorithm will choose a random alternative from
those minimum participant alternatives.
Users may also write their own algorithms. The default algorithm may be specified globally in the configuration file, or on a per experiment basis using the experiments hash of the configuration file.
To change the algorithm globally for all experiments, use the following in your initializer:
```ruby
Split.configure do |config|
config.algorithm = Split::Algorithms::Whiplash
end
```
## Extensions
- [Split::Export](https://github.com/splitrb/split-export) - Easily export A/B test data out of Split.
- [Split::Analytics](https://github.com/splitrb/split-analytics) - Push test data to Google Analytics.
- [Split::Mongoid](https://github.com/MongoHQ/split-mongoid) - Store experiment data in mongoid (still uses redis).
- [Split::Cacheable](https://github.com/harrystech/split_cacheable) - Automatically create cache buckets per test.
- [Split::Counters](https://github.com/bernardkroes/split-counters) - Add counters per experiment and alternative.
- [Split::Cli](https://github.com/craigmcnamara/split-cli) - A CLI to trigger Split A/B tests.
## Screencast
Ryan bates has produced an excellent 10 minute screencast about split on the Railscasts site: [A/B Testing with Split](http://railscasts.com/episodes/331-a-b-testing-with-split)
## Blogposts
* [Recipe: A/B testing with KISSMetrics and the split gem](https://robots.thoughtbot.com/post/9595887299/recipe-a-b-testing-with-kissmetrics-and-the-split-gem)
* [Rails A/B testing with Split on Heroku](http://blog.nathanhumbert.com/2012/02/rails-ab-testing-with-split-on-heroku.html)
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## Sponsors
Become a sponsor and get your logo on our README on Github with a link to your site. [[Become a sponsor](https://opencollective.com/split#sponsor)]
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## Contribute
Please do! Over 70 different people have contributed to the project, you can see them all here: https://github.com/splitrb/split/graphs/contributors.
### Development
The source code is hosted at [GitHub](https://github.com/splitrb/split).
Report issues and feature requests on [GitHub Issues](https://github.com/splitrb/split/issues).
You can find a discussion form on [Google Groups](https://groups.google.com/d/forum/split-ruby).
### Tests
Run the tests like this:
# Start a Redis server in another tab.
redis-server
bundle
rake spec
### A Note on Patches and Pull Requests
* Fork the project.
* Make your feature addition or bug fix.
* Add tests for it. This is important so I don't break it in a
future version unintentionally.
* Add documentation if necessary.
* Commit. Do not mess with the rakefile, version, or history.
(If you want to have your own version, that is fine. But bump the version in a commit by itself, which I can ignore when I pull.)
* Send a pull request. Bonus points for topic branches.
### Code of Conduct
Please note that this project is released with a [Contributor Code of Conduct](CODE_OF_CONDUCT.md). By participating in this project you agree to abide by its terms.
## Copyright
[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
<MSG> split dashboard works with rails 3 or higher (#505)
<DFF> @@ -388,7 +388,7 @@ run Rack::URLMap.new \
"/split" => Split::Dashboard.new
```
-However, if you are using Rails 3: You can mount this inside your app routes by first adding this to the Gemfile:
+However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
| 1 | split dashboard works with rails 3 or higher (#505) | 1 | .md | md | mit | splitrb/split |
10070878 | <NME> README.md
<BEF> # [Split](https://libraries.io/rubygems/split)
[](http://badge.fury.io/rb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://codeclimate.com/github/splitrb/split/coverage)
[](https://github.com/RichardLitt/standard-readme)
[](https://www.codetriage.com/splitrb/split)
> 📈 The Rack Based A/B testing framework https://libraries.io/rubygems/split
Split is a rack based A/B testing framework designed to work with Rails, Sinatra or any other rack based app.
Split is heavily inspired by the [Abingo](https://github.com/ryanb/abingo) and [Vanity](https://github.com/assaf/vanity) Rails A/B testing plugins and [Resque](https://github.com/resque/resque) in its use of Redis.
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
## Install
### Requirements
Split v4.0+ is currently tested with Ruby >= 2.5 and Rails >= 5.2.
If your project requires compatibility with Ruby 2.4.x or older Rails versions. You can try v3.0 or v0.8.0(for Ruby 1.9.3)
Split uses Redis as a datastore.
Split only supports Redis 4.0 or greater.
If you're on OS X, Homebrew is the simplest way to install Redis:
```bash
brew install redis
redis-server /usr/local/etc/redis.conf
```
You now have a Redis daemon running on port `6379`.
### Setup
```bash
gem install split
```
#### Rails
Adding `gem 'split'` to your Gemfile will autoload it when rails starts up, as long as you've configured Redis it will 'just work'.
#### Sinatra
To configure Sinatra with Split you need to enable sessions and mix in the helper methods. Add the following lines at the top of your Sinatra app:
```ruby
require 'split'
class MySinatraApp < Sinatra::Base
enable :sessions
helpers Split::Helper
get '/' do
...
end
```
## Usage
To begin your A/B test use the `ab_test` method, naming your experiment with the first argument and then the different alternatives which you wish to test on as the other arguments.
`ab_test` returns one of the alternatives, if a user has already seen that test they will get the same alternative as before, which you can use to split your code on.
It can be used to render different templates, show different text or any other case based logic.
`ab_finished` is used to make a completion of an experiment, or conversion.
Example: View
```erb
<% ab_test(:login_button, "/images/button1.jpg", "/images/button2.jpg") do |button_file| %>
<%= image_tag(button_file, alt: "Login!") %>
<% end %>
```
Example: Controller
```ruby
def register_new_user
# See what level of free points maximizes users' decision to buy replacement points.
@starter_points = ab_test(:new_user_free_points, '100', '200', '300')
end
```
Example: Conversion tracking (in a controller!)
```ruby
def buy_new_points
# some business logic
ab_finished(:new_user_free_points)
end
```
Example: Conversion tracking (in a view)
```erb
Thanks for signing up, dude! <% ab_finished(:signup_page_redesign) %>
```
You can find more examples, tutorials and guides on the [wiki](https://github.com/splitrb/split/wiki).
## Statistical Validity
Split has two options for you to use to determine which alternative is the best.
The first option (default on the dashboard) uses a z test (n>30) for the difference between your control and alternative conversion rates to calculate statistical significance. This test will tell you whether an alternative is better or worse than your control, but it will not distinguish between which alternative is the best in an experiment with multiple alternatives. Split will only tell you if your experiment is 90%, 95%, or 99% significant, and this test only works if you have more than 30 participants and 5 conversions for each branch.
As per this [blog post](https://www.evanmiller.org/how-not-to-run-an-ab-test.html) on the pitfalls of A/B testing, it is highly recommended that you determine your requisite sample size for each branch before running the experiment. Otherwise, you'll have an increased rate of false positives (experiments which show a significant effect where really there is none).
[Here](https://www.evanmiller.org/ab-testing/sample-size.html) is a sample size calculator for your convenience.
The second option uses simulations from a beta distribution to determine the probability that the given alternative is the winner compared to all other alternatives. You can view these probabilities by clicking on the drop-down menu labeled "Confidence." This option should be used when the experiment has more than just 1 control and 1 alternative. It can also be used for a simple, 2-alternative A/B test.
Calculating the beta-distribution simulations for a large number of experiments can be slow, so the results are cached. You can specify how often they should be recalculated (the default is once per day).
```ruby
Split.configure do |config|
config.winning_alternative_recalculation_interval = 3600 # 1 hour
end
```
## Extras
### Weighted alternatives
Perhaps you only want to show an alternative to 10% of your visitors because it is very experimental or not yet fully load tested.
To do this you can pass a weight with each alternative in the following ways:
```ruby
ab_test(:homepage_design, {'Old' => 18}, {'New' => 2})
ab_test(:homepage_design, 'Old', {'New' => 1.0/9})
ab_test(:homepage_design, {'Old' => 9}, 'New')
```
This will only show the new alternative to visitors 1 in 10 times, the default weight for an alternative is 1.
### Overriding alternatives
For development and testing, you may wish to force your app to always return an alternative.
You can do this by passing it as a parameter in the url.
If you have an experiment called `button_color` with alternatives called `red` and `blue` used on your homepage, a url such as:
http://myawesomesite.com?ab_test[button_color]=red
will always have red buttons. This won't be stored in your session or count towards to results, unless you set the `store_override` configuration option.
In the event you want to disable all tests without having to know the individual experiment names, add a `SPLIT_DISABLE` query parameter.
http://myawesomesite.com?SPLIT_DISABLE=true
It is not required to send `SPLIT_DISABLE=false` to activate Split.
### Rspec Helper
To aid testing with RSpec, write `spec/support/split_helper.rb` and call `use_ab_test(alternatives_by_experiment)` in your specs as instructed below:
```ruby
# Create a file with these contents at 'spec/support/split_helper.rb'
# and ensure it is `require`d in your rails_helper.rb or spec_helper.rb
module SplitHelper
# Force a specific experiment alternative to always be returned:
# use_ab_test(signup_form: "single_page")
#
# Force alternatives for multiple experiments:
# use_ab_test(signup_form: "single_page", pricing: "show_enterprise_prices")
#
def use_ab_test(alternatives_by_experiment)
allow_any_instance_of(Split::Helper).to receive(:ab_test) do |_receiver, experiment, &block|
variant = alternatives_by_experiment.fetch(experiment) { |key| raise "Unknown experiment '#{key}'" }
block.call(variant) unless block.nil?
variant
end
end
end
# Make the `use_ab_test` method available to all specs:
RSpec.configure do |config|
config.include SplitHelper
end
```
Now you can call `use_ab_test(alternatives_by_experiment)` in your specs, for example:
```ruby
it "registers using experimental signup" do
use_ab_test experiment_name: "alternative_name"
post "/signups"
...
end
```
### Starting experiments manually
By default new A/B tests will be active right after deployment. In case you would like to start new test a while after
the deploy, you can do it by setting the `start_manually` configuration option to `true`.
After choosing this option tests won't be started right after deploy, but after pressing the `Start` button in Split admin dashboard. If a test is deleted from the Split dashboard, then it can only be started after pressing the `Start` button whenever being re-initialized.
### Reset after completion
When a user completes a test their session is reset so that they may start the test again in the future.
To stop this behaviour you can pass the following option to the `ab_finished` method:
```ruby
ab_finished(:experiment_name, reset: false)
```
The user will then always see the alternative they started with.
Any old unfinished experiment key will be deleted from the user's data storage if the experiment had been removed or is over and a winner had been chosen. This allows a user to enroll into any new experiment in cases when the `allow_multiple_experiments` config option is set to `false`.
### Reset experiments manually
By default Split automatically resets the experiment whenever it detects the configuration for an experiment has changed (e.g. you call `ab_test` with different alternatives). You can prevent this by setting the option `reset_manually` to `true`.
You may want to do this when you want to change something, like the variants' names, the metadata about an experiment, etc. without resetting everything.
### Multiple experiments at once
By default Split will avoid users participating in multiple experiments at once. This means you are less likely to skew results by adding in more variation to your tests.
To stop this behaviour and allow users to participate in multiple experiments at once set the `allow_multiple_experiments` config option to true like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = true
end
```
This will allow the user to participate in any number of experiments and belong to any alternative in each experiment. This has the possible downside of a variation in one experiment influencing the outcome of another.
To address this, setting the `allow_multiple_experiments` config option to 'control' like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = 'control'
end
```
For this to work, each and every experiment you define must have an alternative named 'control'. This will allow the user to participate in multiple experiments as long as the user belongs to the alternative 'control' in each experiment. As soon as the user belongs to an alternative named something other than 'control' the user may not participate in any more experiments. Calling ab_test(<other experiments>) will always return the first alternative without adding the user to that experiment.
### Experiment Persistence
Split comes with three built-in persistence adapters for storing users and the alternatives they've been given for each experiment.
By default Split will store the tests for each user in the session.
You can optionally configure Split to use a cookie, Redis, or any custom adapter of your choosing.
#### Cookies
```ruby
Split.configure do |config|
config.persistence = :cookie
end
```
When using the cookie persistence, Split stores data into an anonymous tracking cookie named 'split', which expires in 1 year. To change that, set the `persistence_cookie_length` in the configuration (unit of time in seconds).
```ruby
Split.configure do |config|
config.persistence = :cookie
config.persistence_cookie_length = 2592000 # 30 days
end
```
The data stored consists of the experiment name and the variants the user is in. Example: { "experiment_name" => "variant_a" }
__Note:__ Using cookies depends on `ActionDispatch::Cookies` or any identical API
#### Redis
Using Redis will allow ab_users to persist across sessions or machines.
```ruby
Split.configure do |config|
config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: -> (context) { context.current_user_id })
# Equivalent
# config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: :current_user_id)
end
```
Options:
* `lookup_by`: method to invoke per request for uniquely identifying ab_users (mandatory configuration)
* `namespace`: separate namespace to store these persisted values (default "persistence")
* `expire_seconds`: sets TTL for user key. (if a user is in multiple experiments most recent update will reset TTL for all their assignments)
#### Dual Adapter
The Dual Adapter allows the use of different persistence adapters for logged-in and logged-out users. A common use case is to use Redis for logged-in users and Cookies for logged-out users.
```ruby
cookie_adapter = Split::Persistence::CookieAdapter
redis_adapter = Split::Persistence::RedisAdapter.with_config(
lookup_by: -> (context) { context.send(:current_user).try(:id) },
expire_seconds: 2592000)
Split.configure do |config|
config.persistence = Split::Persistence::DualAdapter.with_config(
logged_in: -> (context) { !context.send(:current_user).try(:id).nil? },
logged_in_adapter: redis_adapter,
logged_out_adapter: cookie_adapter)
config.persistence_cookie_length = 2592000 # 30 days
end
```
#### Custom Adapter
Your custom adapter needs to implement the same API as existing adapters.
See `Split::Persistence::CookieAdapter` or `Split::Persistence::SessionAdapter` for a starting point.
```ruby
Split.configure do |config|
config.persistence = YourCustomAdapterClass
end
```
### Trial Event Hooks
You can define methods that will be called at the same time as experiment
alternative participation and goal completion.
For example:
``` ruby
Split.configure do |config|
config.on_trial = :log_trial # run on every trial
config.on_trial_choose = :log_trial_choose # run on trials with new users only
config.on_trial_complete = :log_trial_complete
end
```
Set these attributes to a method name available in the same context as the
`ab_test` method. These methods should accept one argument, a `Trial` instance.
``` ruby
def log_trial(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_choose(trial)
logger.info "[new user] experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_complete(trial)
logger.info "experiment=%s alternative=%s user=%s complete=true" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
#### Views
If you are running `ab_test` from a view, you must define your event
hook callback as a
[helper_method](https://apidock.com/rails/AbstractController/Helpers/ClassMethods/helper_method)
in the controller:
``` ruby
helper_method :log_trial_choose
def log_trial_choose(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
### Experiment Hooks
You can assign a proc that will be called when an experiment is reset or deleted. You can use these hooks to call methods within your application to keep data related to experiments in sync with Split.
For example:
``` ruby
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
# after experiment winner had been set
config.on_experiment_winner_choose = -> (experiment) { # Do something on winner choose }
end
```
## Web Interface
Split comes with a Sinatra-based front end to get an overview of how your experiments are doing.
If you are running Rails 2: You can mount this inside your app using Rack::URLMap in your `config.ru`
```ruby
require 'split/dashboard'
run Rack::URLMap.new \
"/" => Your::App.new,
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
```
Then adding this to config/routes.rb
```ruby
mount Split::Dashboard, at: 'split'
```
You may want to password protect that page, you can do so with `Rack::Auth::Basic` (in your split initializer file)
```ruby
# Rails apps or apps that already depend on activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
# Apps without activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
```
You can even use Devise or any other Warden-based authentication method to authorize users. Just replace `mount Split::Dashboard, :at => 'split'` in `config/routes.rb` with the following:
```ruby
match "/split" => Split::Dashboard, anchor: false, via: [:get, :post, :delete], constraints: -> (request) do
request.env['warden'].authenticated? # are we authenticated?
request.env['warden'].authenticate! # authenticate if not already
# or even check any other condition such as request.env['warden'].user.is_admin?
end
```
More information on this [here](https://steve.dynedge.co.uk/2011/12/09/controlling-access-to-routes-and-rack-apps-in-rails-3-with-devise-and-warden/)
### Screenshot
## Configuration
You can override the default configuration options of Split like so:
```ruby
Split.configure do |config|
config.db_failover = true # handle Redis errors gracefully
config.db_failover_on_db_error = -> (error) { Rails.logger.error(error.message) }
config.allow_multiple_experiments = true
config.enabled = true
config.persistence = Split::Persistence::SessionAdapter
#config.start_manually = false ## new test will have to be started manually from the admin panel. default false
#config.reset_manually = false ## if true, it never resets the experiment data, even if the configuration changes
config.include_rails_helper = true
config.redis = "redis://custom.redis.url:6380"
end
```
Split looks for the Redis host in the environment variable `REDIS_URL` then
defaults to `redis://localhost:6379` if not specified by configure block.
On platforms like Heroku, Split will use the value of `REDIS_PROVIDER` to
determine which env variable key to use when retrieving the host config. This
defaults to `REDIS_URL`.
### Filtering
In most scenarios you don't want to have AB-Testing enabled for web spiders, robots or special groups of users.
Split provides functionality to filter this based on a predefined, extensible list of bots, IP-lists or custom exclude logic.
```ruby
Split.configure do |config|
# bot config
config.robot_regex = /my_custom_robot_regex/ # or
config.bots['newbot'] = "Description for bot with 'newbot' user agent, which will be added to config.robot_regex for exclusion"
# IP config
config.ignore_ip_addresses << '81.19.48.130' # or regex: /81\.19\.48\.[0-9]+/
# or provide your own filter functionality, the default is proc{ |request| is_robot? || is_ignored_ip_address? || is_preview? }
config.ignore_filter = -> (request) { CustomExcludeLogic.excludes?(request) }
end
```
### Experiment configuration
Instead of providing the experiment options inline, you can store them
in a hash. This hash can control your experiment's alternatives, weights,
algorithm and if the experiment resets once finished:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
resettable: false
},
:my_second_experiment => {
algorithm: 'Split::Algorithms::Whiplash',
alternatives: [
{ name: "a", percent: 67 },
{ name: "b", percent: 33 }
]
}
}
end
```
You can also store your experiments in a YAML file:
```ruby
Split.configure do |config|
config.experiments = YAML.load_file "config/experiments.yml"
end
```
You can then define the YAML file like:
```yaml
my_first_experiment:
alternatives:
- a
- b
my_second_experiment:
alternatives:
- name: a
percent: 67
- name: b
percent: 33
resettable: false
```
This simplifies the calls from your code:
```ruby
ab_test(:my_first_experiment)
```
and:
```ruby
ab_finished(:my_first_experiment)
```
You can also add meta data for each experiment, which is very useful when you need more than an alternative name to change behaviour:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metadata: {
"a" => {"text" => "Have a fantastic day"},
"b" => {"text" => "Don't get hit by a bus"}
}
}
}
end
```
```yaml
my_first_experiment:
alternatives:
- a
- b
metadata:
a:
text: "Have a fantastic day"
b:
text: "Don't get hit by a bus"
```
This allows for some advanced experiment configuration using methods like:
```ruby
trial.alternative.name # => "a"
trial.metadata['text'] # => "Have a fantastic day"
```
or in views:
```erb
<% ab_test("my_first_experiment") do |alternative, meta| %>
<%= alternative %>
<small><%= meta['text'] %></small>
<% end %>
```
The keys used in meta data should be Strings
#### Metrics
You might wish to track generic metrics, such as conversions, and use
those to complete multiple different experiments without adding more to
your code. You can use the configuration hash to do this, thanks to
the `:metric` option.
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metric: :my_metric
}
}
end
```
Your code may then track a completion using the metric instead of
the experiment name:
```ruby
ab_finished(:my_metric)
```
You can also create a new metric by instantiating and saving a new Metric object.
```ruby
Split::Metric.new(:my_metric)
Split::Metric.save
```
#### Goals
You might wish to allow an experiment to have multiple, distinguishable goals.
The API to define goals for an experiment is this:
```ruby
ab_test({link_color: ["purchase", "refund"]}, "red", "blue")
```
or you can define them in a configuration file:
```ruby
Split.configure do |config|
config.experiments = {
link_color: {
alternatives: ["red", "blue"],
goals: ["purchase", "refund"]
}
}
end
```
To complete a goal conversion, you do it like:
```ruby
ab_finished(link_color: "purchase")
```
Note that if you pass additional options, that should be a separate hash:
```ruby
ab_finished({ link_color: "purchase" }, reset: false)
```
**NOTE:** This does not mean that a single experiment can complete more than one goal.
Once you finish one of the goals, the test is considered to be completed, and finishing the other goal will no longer register. (Assuming the test runs with `reset: false`.)
**Good Example**: Test if listing Plan A first result in more conversions to Plan A (goal: "plana_conversion") or Plan B (goal: "planb_conversion").
**Bad Example**: Test if button color increases conversion rate through multiple steps of a funnel. THIS WILL NOT WORK.
**Bad Example**: Test both how button color affects signup *and* how it affects login, at the same time. THIS WILL NOT WORK.
#### Combined Experiments
If you want to test how button color affects signup *and* how it affects login at the same time, use combined experiments.
Configure like so:
```ruby
Split.configuration.experiments = {
:button_color_experiment => {
:alternatives => ["blue", "green"],
:combined_experiments => ["button_color_on_signup", "button_color_on_login"]
}
}
```
Starting the combined test starts all combined experiments
```ruby
ab_combined_test(:button_color_experiment)
```
Finish each combined test as normal
```ruby
ab_finished(:button_color_on_login)
ab_finished(:button_color_on_signup)
```
**Additional Configuration**:
* Be sure to enable `allow_multiple_experiments`
* In Sinatra include the CombinedExperimentsHelper
```
helpers Split::CombinedExperimentsHelper
```
### DB failover solution
Due to the fact that Redis has no automatic failover mechanism, it's
possible to switch on the `db_failover` config option, so that `ab_test`
and `ab_finished` will not crash in case of a db failure. `ab_test` always
delivers alternative A (the first one) in that case.
It's also possible to set a `db_failover_on_db_error` callback (proc)
for example to log these errors via Rails.logger.
### Redis
You may want to change the Redis host and port Split connects to, or
set various other options at startup.
Split has a `redis` setter which can be given a string or a Redis
object. This means if you're already using Redis in your app, Split
can re-use the existing connection.
String: `Split.redis = 'redis://localhost:6379'`
Redis: `Split.redis = $redis`
For our rails app we have a `config/initializers/split.rb` file where
we load `config/split.yml` by hand and set the Redis information
appropriately.
Here's our `config/split.yml`:
```yml
development: redis://localhost:6379
test: redis://localhost:6379
staging: redis://redis1.example.com:6379
fi: redis://localhost:6379
production: redis://redis1.example.com:6379
```
And our initializer:
```ruby
split_config = YAML.load_file(Rails.root.join('config', 'split.yml'))
Split.redis = split_config[Rails.env]
```
### Redis Caching (v4.0+)
In some high-volume usage scenarios, Redis load can be incurred by repeated
fetches for fairly static data. Enabling caching will reduce this load.
```ruby
Split.configuration.cache = true
````
This currently caches:
- `Split::ExperimentCatalog.find`
- `Split::Experiment.start_time`
- `Split::Experiment.winner`
## Namespaces
If you're running multiple, separate instances of Split you may want
to namespace the keyspaces so they do not overlap. This is not unlike
the approach taken by many memcached clients.
This feature can be provided by the [redis-namespace](https://github.com/defunkt/redis-namespace)
library. To configure Split to use `Redis::Namespace`, do the following:
1. Add `redis-namespace` to your Gemfile:
```ruby
gem 'redis-namespace'
```
2. Configure `Split.redis` to use a `Redis::Namespace` instance (possible in an
initializer):
```ruby
redis = Redis.new(url: ENV['REDIS_URL']) # or whatever config you want
Split.redis = Redis::Namespace.new(:your_namespace, redis: redis)
```
## Outside of a Web Session
Split provides the Helper module to facilitate running experiments inside web sessions.
Alternatively, you can access the underlying Metric, Trial, Experiment and Alternative objects to
conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
trial.choose!
# get the result, returns either red or blue
trial.alternative.name
# if the goal has been achieved, increment the successful completions for this alternative.
if goal_achieved?
trial.complete!
end
```
## Algorithms
By default, Split ships with `Split::Algorithms::WeightedSample` that randomly selects from possible alternatives for a traditional a/b test.
It is possible to specify static weights to favor certain alternatives.
`Split::Algorithms::Whiplash` is an implementation of a [multi-armed bandit algorithm](http://stevehanov.ca/blog/index.php?id=132).
This algorithm will automatically weight the alternatives based on their relative performance,
choosing the better-performing ones more often as trials are completed.
`Split::Algorithms::BlockRandomization` is an algorithm that ensures equal
participation across all alternatives. This algorithm will choose the alternative
with the fewest participants. In the event of multiple minimum participant alternatives
(i.e. starting a new "Block") the algorithm will choose a random alternative from
those minimum participant alternatives.
Users may also write their own algorithms. The default algorithm may be specified globally in the configuration file, or on a per experiment basis using the experiments hash of the configuration file.
To change the algorithm globally for all experiments, use the following in your initializer:
```ruby
Split.configure do |config|
config.algorithm = Split::Algorithms::Whiplash
end
```
## Extensions
- [Split::Export](https://github.com/splitrb/split-export) - Easily export A/B test data out of Split.
- [Split::Analytics](https://github.com/splitrb/split-analytics) - Push test data to Google Analytics.
- [Split::Mongoid](https://github.com/MongoHQ/split-mongoid) - Store experiment data in mongoid (still uses redis).
- [Split::Cacheable](https://github.com/harrystech/split_cacheable) - Automatically create cache buckets per test.
- [Split::Counters](https://github.com/bernardkroes/split-counters) - Add counters per experiment and alternative.
- [Split::Cli](https://github.com/craigmcnamara/split-cli) - A CLI to trigger Split A/B tests.
## Screencast
Ryan bates has produced an excellent 10 minute screencast about split on the Railscasts site: [A/B Testing with Split](http://railscasts.com/episodes/331-a-b-testing-with-split)
## Blogposts
* [Recipe: A/B testing with KISSMetrics and the split gem](https://robots.thoughtbot.com/post/9595887299/recipe-a-b-testing-with-kissmetrics-and-the-split-gem)
* [Rails A/B testing with Split on Heroku](http://blog.nathanhumbert.com/2012/02/rails-ab-testing-with-split-on-heroku.html)
## Backers
Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/split#backer)]
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## Sponsors
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## Contribute
Please do! Over 70 different people have contributed to the project, you can see them all here: https://github.com/splitrb/split/graphs/contributors.
### Development
The source code is hosted at [GitHub](https://github.com/splitrb/split).
Report issues and feature requests on [GitHub Issues](https://github.com/splitrb/split/issues).
You can find a discussion form on [Google Groups](https://groups.google.com/d/forum/split-ruby).
### Tests
Run the tests like this:
# Start a Redis server in another tab.
redis-server
bundle
rake spec
### A Note on Patches and Pull Requests
* Fork the project.
* Make your feature addition or bug fix.
* Add tests for it. This is important so I don't break it in a
future version unintentionally.
* Add documentation if necessary.
* Commit. Do not mess with the rakefile, version, or history.
(If you want to have your own version, that is fine. But bump the version in a commit by itself, which I can ignore when I pull.)
* Send a pull request. Bonus points for topic branches.
### Code of Conduct
Please note that this project is released with a [Contributor Code of Conduct](CODE_OF_CONDUCT.md). By participating in this project you agree to abide by its terms.
## Copyright
[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
<MSG> split dashboard works with rails 3 or higher (#505)
<DFF> @@ -388,7 +388,7 @@ run Rack::URLMap.new \
"/split" => Split::Dashboard.new
```
-However, if you are using Rails 3: You can mount this inside your app routes by first adding this to the Gemfile:
+However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
| 1 | split dashboard works with rails 3 or higher (#505) | 1 | .md | md | mit | splitrb/split |
10070879 | <NME> README.md
<BEF> # [Split](https://libraries.io/rubygems/split)
[](http://badge.fury.io/rb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://codeclimate.com/github/splitrb/split/coverage)
[](https://github.com/RichardLitt/standard-readme)
[](https://www.codetriage.com/splitrb/split)
> 📈 The Rack Based A/B testing framework https://libraries.io/rubygems/split
Split is a rack based A/B testing framework designed to work with Rails, Sinatra or any other rack based app.
Split is heavily inspired by the [Abingo](https://github.com/ryanb/abingo) and [Vanity](https://github.com/assaf/vanity) Rails A/B testing plugins and [Resque](https://github.com/resque/resque) in its use of Redis.
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
## Install
### Requirements
Split v4.0+ is currently tested with Ruby >= 2.5 and Rails >= 5.2.
If your project requires compatibility with Ruby 2.4.x or older Rails versions. You can try v3.0 or v0.8.0(for Ruby 1.9.3)
Split uses Redis as a datastore.
Split only supports Redis 4.0 or greater.
If you're on OS X, Homebrew is the simplest way to install Redis:
```bash
brew install redis
redis-server /usr/local/etc/redis.conf
```
You now have a Redis daemon running on port `6379`.
### Setup
```bash
gem install split
```
#### Rails
Adding `gem 'split'` to your Gemfile will autoload it when rails starts up, as long as you've configured Redis it will 'just work'.
#### Sinatra
To configure Sinatra with Split you need to enable sessions and mix in the helper methods. Add the following lines at the top of your Sinatra app:
```ruby
require 'split'
class MySinatraApp < Sinatra::Base
enable :sessions
helpers Split::Helper
get '/' do
...
end
```
## Usage
To begin your A/B test use the `ab_test` method, naming your experiment with the first argument and then the different alternatives which you wish to test on as the other arguments.
`ab_test` returns one of the alternatives, if a user has already seen that test they will get the same alternative as before, which you can use to split your code on.
It can be used to render different templates, show different text or any other case based logic.
`ab_finished` is used to make a completion of an experiment, or conversion.
Example: View
```erb
<% ab_test(:login_button, "/images/button1.jpg", "/images/button2.jpg") do |button_file| %>
<%= image_tag(button_file, alt: "Login!") %>
<% end %>
```
Example: Controller
```ruby
def register_new_user
# See what level of free points maximizes users' decision to buy replacement points.
@starter_points = ab_test(:new_user_free_points, '100', '200', '300')
end
```
Example: Conversion tracking (in a controller!)
```ruby
def buy_new_points
# some business logic
ab_finished(:new_user_free_points)
end
```
Example: Conversion tracking (in a view)
```erb
Thanks for signing up, dude! <% ab_finished(:signup_page_redesign) %>
```
You can find more examples, tutorials and guides on the [wiki](https://github.com/splitrb/split/wiki).
## Statistical Validity
Split has two options for you to use to determine which alternative is the best.
The first option (default on the dashboard) uses a z test (n>30) for the difference between your control and alternative conversion rates to calculate statistical significance. This test will tell you whether an alternative is better or worse than your control, but it will not distinguish between which alternative is the best in an experiment with multiple alternatives. Split will only tell you if your experiment is 90%, 95%, or 99% significant, and this test only works if you have more than 30 participants and 5 conversions for each branch.
As per this [blog post](https://www.evanmiller.org/how-not-to-run-an-ab-test.html) on the pitfalls of A/B testing, it is highly recommended that you determine your requisite sample size for each branch before running the experiment. Otherwise, you'll have an increased rate of false positives (experiments which show a significant effect where really there is none).
[Here](https://www.evanmiller.org/ab-testing/sample-size.html) is a sample size calculator for your convenience.
The second option uses simulations from a beta distribution to determine the probability that the given alternative is the winner compared to all other alternatives. You can view these probabilities by clicking on the drop-down menu labeled "Confidence." This option should be used when the experiment has more than just 1 control and 1 alternative. It can also be used for a simple, 2-alternative A/B test.
Calculating the beta-distribution simulations for a large number of experiments can be slow, so the results are cached. You can specify how often they should be recalculated (the default is once per day).
```ruby
Split.configure do |config|
config.winning_alternative_recalculation_interval = 3600 # 1 hour
end
```
## Extras
### Weighted alternatives
Perhaps you only want to show an alternative to 10% of your visitors because it is very experimental or not yet fully load tested.
To do this you can pass a weight with each alternative in the following ways:
```ruby
ab_test(:homepage_design, {'Old' => 18}, {'New' => 2})
ab_test(:homepage_design, 'Old', {'New' => 1.0/9})
ab_test(:homepage_design, {'Old' => 9}, 'New')
```
This will only show the new alternative to visitors 1 in 10 times, the default weight for an alternative is 1.
### Overriding alternatives
For development and testing, you may wish to force your app to always return an alternative.
You can do this by passing it as a parameter in the url.
If you have an experiment called `button_color` with alternatives called `red` and `blue` used on your homepage, a url such as:
http://myawesomesite.com?ab_test[button_color]=red
will always have red buttons. This won't be stored in your session or count towards to results, unless you set the `store_override` configuration option.
In the event you want to disable all tests without having to know the individual experiment names, add a `SPLIT_DISABLE` query parameter.
http://myawesomesite.com?SPLIT_DISABLE=true
It is not required to send `SPLIT_DISABLE=false` to activate Split.
### Rspec Helper
To aid testing with RSpec, write `spec/support/split_helper.rb` and call `use_ab_test(alternatives_by_experiment)` in your specs as instructed below:
```ruby
# Create a file with these contents at 'spec/support/split_helper.rb'
# and ensure it is `require`d in your rails_helper.rb or spec_helper.rb
module SplitHelper
# Force a specific experiment alternative to always be returned:
# use_ab_test(signup_form: "single_page")
#
# Force alternatives for multiple experiments:
# use_ab_test(signup_form: "single_page", pricing: "show_enterprise_prices")
#
def use_ab_test(alternatives_by_experiment)
allow_any_instance_of(Split::Helper).to receive(:ab_test) do |_receiver, experiment, &block|
variant = alternatives_by_experiment.fetch(experiment) { |key| raise "Unknown experiment '#{key}'" }
block.call(variant) unless block.nil?
variant
end
end
end
# Make the `use_ab_test` method available to all specs:
RSpec.configure do |config|
config.include SplitHelper
end
```
Now you can call `use_ab_test(alternatives_by_experiment)` in your specs, for example:
```ruby
it "registers using experimental signup" do
use_ab_test experiment_name: "alternative_name"
post "/signups"
...
end
```
### Starting experiments manually
By default new A/B tests will be active right after deployment. In case you would like to start new test a while after
the deploy, you can do it by setting the `start_manually` configuration option to `true`.
After choosing this option tests won't be started right after deploy, but after pressing the `Start` button in Split admin dashboard. If a test is deleted from the Split dashboard, then it can only be started after pressing the `Start` button whenever being re-initialized.
### Reset after completion
When a user completes a test their session is reset so that they may start the test again in the future.
To stop this behaviour you can pass the following option to the `ab_finished` method:
```ruby
ab_finished(:experiment_name, reset: false)
```
The user will then always see the alternative they started with.
Any old unfinished experiment key will be deleted from the user's data storage if the experiment had been removed or is over and a winner had been chosen. This allows a user to enroll into any new experiment in cases when the `allow_multiple_experiments` config option is set to `false`.
### Reset experiments manually
By default Split automatically resets the experiment whenever it detects the configuration for an experiment has changed (e.g. you call `ab_test` with different alternatives). You can prevent this by setting the option `reset_manually` to `true`.
You may want to do this when you want to change something, like the variants' names, the metadata about an experiment, etc. without resetting everything.
### Multiple experiments at once
By default Split will avoid users participating in multiple experiments at once. This means you are less likely to skew results by adding in more variation to your tests.
To stop this behaviour and allow users to participate in multiple experiments at once set the `allow_multiple_experiments` config option to true like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = true
end
```
This will allow the user to participate in any number of experiments and belong to any alternative in each experiment. This has the possible downside of a variation in one experiment influencing the outcome of another.
To address this, setting the `allow_multiple_experiments` config option to 'control' like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = 'control'
end
```
For this to work, each and every experiment you define must have an alternative named 'control'. This will allow the user to participate in multiple experiments as long as the user belongs to the alternative 'control' in each experiment. As soon as the user belongs to an alternative named something other than 'control' the user may not participate in any more experiments. Calling ab_test(<other experiments>) will always return the first alternative without adding the user to that experiment.
### Experiment Persistence
Split comes with three built-in persistence adapters for storing users and the alternatives they've been given for each experiment.
By default Split will store the tests for each user in the session.
You can optionally configure Split to use a cookie, Redis, or any custom adapter of your choosing.
#### Cookies
```ruby
Split.configure do |config|
config.persistence = :cookie
end
```
When using the cookie persistence, Split stores data into an anonymous tracking cookie named 'split', which expires in 1 year. To change that, set the `persistence_cookie_length` in the configuration (unit of time in seconds).
```ruby
Split.configure do |config|
config.persistence = :cookie
config.persistence_cookie_length = 2592000 # 30 days
end
```
The data stored consists of the experiment name and the variants the user is in. Example: { "experiment_name" => "variant_a" }
__Note:__ Using cookies depends on `ActionDispatch::Cookies` or any identical API
#### Redis
Using Redis will allow ab_users to persist across sessions or machines.
```ruby
Split.configure do |config|
config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: -> (context) { context.current_user_id })
# Equivalent
# config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: :current_user_id)
end
```
Options:
* `lookup_by`: method to invoke per request for uniquely identifying ab_users (mandatory configuration)
* `namespace`: separate namespace to store these persisted values (default "persistence")
* `expire_seconds`: sets TTL for user key. (if a user is in multiple experiments most recent update will reset TTL for all their assignments)
#### Dual Adapter
The Dual Adapter allows the use of different persistence adapters for logged-in and logged-out users. A common use case is to use Redis for logged-in users and Cookies for logged-out users.
```ruby
cookie_adapter = Split::Persistence::CookieAdapter
redis_adapter = Split::Persistence::RedisAdapter.with_config(
lookup_by: -> (context) { context.send(:current_user).try(:id) },
expire_seconds: 2592000)
Split.configure do |config|
config.persistence = Split::Persistence::DualAdapter.with_config(
logged_in: -> (context) { !context.send(:current_user).try(:id).nil? },
logged_in_adapter: redis_adapter,
logged_out_adapter: cookie_adapter)
config.persistence_cookie_length = 2592000 # 30 days
end
```
#### Custom Adapter
Your custom adapter needs to implement the same API as existing adapters.
See `Split::Persistence::CookieAdapter` or `Split::Persistence::SessionAdapter` for a starting point.
```ruby
Split.configure do |config|
config.persistence = YourCustomAdapterClass
end
```
### Trial Event Hooks
You can define methods that will be called at the same time as experiment
alternative participation and goal completion.
For example:
``` ruby
Split.configure do |config|
config.on_trial = :log_trial # run on every trial
config.on_trial_choose = :log_trial_choose # run on trials with new users only
config.on_trial_complete = :log_trial_complete
end
```
Set these attributes to a method name available in the same context as the
`ab_test` method. These methods should accept one argument, a `Trial` instance.
``` ruby
def log_trial(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_choose(trial)
logger.info "[new user] experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_complete(trial)
logger.info "experiment=%s alternative=%s user=%s complete=true" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
#### Views
If you are running `ab_test` from a view, you must define your event
hook callback as a
[helper_method](https://apidock.com/rails/AbstractController/Helpers/ClassMethods/helper_method)
in the controller:
``` ruby
helper_method :log_trial_choose
def log_trial_choose(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
### Experiment Hooks
You can assign a proc that will be called when an experiment is reset or deleted. You can use these hooks to call methods within your application to keep data related to experiments in sync with Split.
For example:
``` ruby
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
# after experiment winner had been set
config.on_experiment_winner_choose = -> (experiment) { # Do something on winner choose }
end
```
## Web Interface
Split comes with a Sinatra-based front end to get an overview of how your experiments are doing.
If you are running Rails 2: You can mount this inside your app using Rack::URLMap in your `config.ru`
```ruby
require 'split/dashboard'
run Rack::URLMap.new \
"/" => Your::App.new,
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
```
Then adding this to config/routes.rb
```ruby
mount Split::Dashboard, at: 'split'
```
You may want to password protect that page, you can do so with `Rack::Auth::Basic` (in your split initializer file)
```ruby
# Rails apps or apps that already depend on activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
# Apps without activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
```
You can even use Devise or any other Warden-based authentication method to authorize users. Just replace `mount Split::Dashboard, :at => 'split'` in `config/routes.rb` with the following:
```ruby
match "/split" => Split::Dashboard, anchor: false, via: [:get, :post, :delete], constraints: -> (request) do
request.env['warden'].authenticated? # are we authenticated?
request.env['warden'].authenticate! # authenticate if not already
# or even check any other condition such as request.env['warden'].user.is_admin?
end
```
More information on this [here](https://steve.dynedge.co.uk/2011/12/09/controlling-access-to-routes-and-rack-apps-in-rails-3-with-devise-and-warden/)
### Screenshot
## Configuration
You can override the default configuration options of Split like so:
```ruby
Split.configure do |config|
config.db_failover = true # handle Redis errors gracefully
config.db_failover_on_db_error = -> (error) { Rails.logger.error(error.message) }
config.allow_multiple_experiments = true
config.enabled = true
config.persistence = Split::Persistence::SessionAdapter
#config.start_manually = false ## new test will have to be started manually from the admin panel. default false
#config.reset_manually = false ## if true, it never resets the experiment data, even if the configuration changes
config.include_rails_helper = true
config.redis = "redis://custom.redis.url:6380"
end
```
Split looks for the Redis host in the environment variable `REDIS_URL` then
defaults to `redis://localhost:6379` if not specified by configure block.
On platforms like Heroku, Split will use the value of `REDIS_PROVIDER` to
determine which env variable key to use when retrieving the host config. This
defaults to `REDIS_URL`.
### Filtering
In most scenarios you don't want to have AB-Testing enabled for web spiders, robots or special groups of users.
Split provides functionality to filter this based on a predefined, extensible list of bots, IP-lists or custom exclude logic.
```ruby
Split.configure do |config|
# bot config
config.robot_regex = /my_custom_robot_regex/ # or
config.bots['newbot'] = "Description for bot with 'newbot' user agent, which will be added to config.robot_regex for exclusion"
# IP config
config.ignore_ip_addresses << '81.19.48.130' # or regex: /81\.19\.48\.[0-9]+/
# or provide your own filter functionality, the default is proc{ |request| is_robot? || is_ignored_ip_address? || is_preview? }
config.ignore_filter = -> (request) { CustomExcludeLogic.excludes?(request) }
end
```
### Experiment configuration
Instead of providing the experiment options inline, you can store them
in a hash. This hash can control your experiment's alternatives, weights,
algorithm and if the experiment resets once finished:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
resettable: false
},
:my_second_experiment => {
algorithm: 'Split::Algorithms::Whiplash',
alternatives: [
{ name: "a", percent: 67 },
{ name: "b", percent: 33 }
]
}
}
end
```
You can also store your experiments in a YAML file:
```ruby
Split.configure do |config|
config.experiments = YAML.load_file "config/experiments.yml"
end
```
You can then define the YAML file like:
```yaml
my_first_experiment:
alternatives:
- a
- b
my_second_experiment:
alternatives:
- name: a
percent: 67
- name: b
percent: 33
resettable: false
```
This simplifies the calls from your code:
```ruby
ab_test(:my_first_experiment)
```
and:
```ruby
ab_finished(:my_first_experiment)
```
You can also add meta data for each experiment, which is very useful when you need more than an alternative name to change behaviour:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metadata: {
"a" => {"text" => "Have a fantastic day"},
"b" => {"text" => "Don't get hit by a bus"}
}
}
}
end
```
```yaml
my_first_experiment:
alternatives:
- a
- b
metadata:
a:
text: "Have a fantastic day"
b:
text: "Don't get hit by a bus"
```
This allows for some advanced experiment configuration using methods like:
```ruby
trial.alternative.name # => "a"
trial.metadata['text'] # => "Have a fantastic day"
```
or in views:
```erb
<% ab_test("my_first_experiment") do |alternative, meta| %>
<%= alternative %>
<small><%= meta['text'] %></small>
<% end %>
```
The keys used in meta data should be Strings
#### Metrics
You might wish to track generic metrics, such as conversions, and use
those to complete multiple different experiments without adding more to
your code. You can use the configuration hash to do this, thanks to
the `:metric` option.
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metric: :my_metric
}
}
end
```
Your code may then track a completion using the metric instead of
the experiment name:
```ruby
ab_finished(:my_metric)
```
You can also create a new metric by instantiating and saving a new Metric object.
```ruby
Split::Metric.new(:my_metric)
Split::Metric.save
```
#### Goals
You might wish to allow an experiment to have multiple, distinguishable goals.
The API to define goals for an experiment is this:
```ruby
ab_test({link_color: ["purchase", "refund"]}, "red", "blue")
```
or you can define them in a configuration file:
```ruby
Split.configure do |config|
config.experiments = {
link_color: {
alternatives: ["red", "blue"],
goals: ["purchase", "refund"]
}
}
end
```
To complete a goal conversion, you do it like:
```ruby
ab_finished(link_color: "purchase")
```
Note that if you pass additional options, that should be a separate hash:
```ruby
ab_finished({ link_color: "purchase" }, reset: false)
```
**NOTE:** This does not mean that a single experiment can complete more than one goal.
Once you finish one of the goals, the test is considered to be completed, and finishing the other goal will no longer register. (Assuming the test runs with `reset: false`.)
**Good Example**: Test if listing Plan A first result in more conversions to Plan A (goal: "plana_conversion") or Plan B (goal: "planb_conversion").
**Bad Example**: Test if button color increases conversion rate through multiple steps of a funnel. THIS WILL NOT WORK.
**Bad Example**: Test both how button color affects signup *and* how it affects login, at the same time. THIS WILL NOT WORK.
#### Combined Experiments
If you want to test how button color affects signup *and* how it affects login at the same time, use combined experiments.
Configure like so:
```ruby
Split.configuration.experiments = {
:button_color_experiment => {
:alternatives => ["blue", "green"],
:combined_experiments => ["button_color_on_signup", "button_color_on_login"]
}
}
```
Starting the combined test starts all combined experiments
```ruby
ab_combined_test(:button_color_experiment)
```
Finish each combined test as normal
```ruby
ab_finished(:button_color_on_login)
ab_finished(:button_color_on_signup)
```
**Additional Configuration**:
* Be sure to enable `allow_multiple_experiments`
* In Sinatra include the CombinedExperimentsHelper
```
helpers Split::CombinedExperimentsHelper
```
### DB failover solution
Due to the fact that Redis has no automatic failover mechanism, it's
possible to switch on the `db_failover` config option, so that `ab_test`
and `ab_finished` will not crash in case of a db failure. `ab_test` always
delivers alternative A (the first one) in that case.
It's also possible to set a `db_failover_on_db_error` callback (proc)
for example to log these errors via Rails.logger.
### Redis
You may want to change the Redis host and port Split connects to, or
set various other options at startup.
Split has a `redis` setter which can be given a string or a Redis
object. This means if you're already using Redis in your app, Split
can re-use the existing connection.
String: `Split.redis = 'redis://localhost:6379'`
Redis: `Split.redis = $redis`
For our rails app we have a `config/initializers/split.rb` file where
we load `config/split.yml` by hand and set the Redis information
appropriately.
Here's our `config/split.yml`:
```yml
development: redis://localhost:6379
test: redis://localhost:6379
staging: redis://redis1.example.com:6379
fi: redis://localhost:6379
production: redis://redis1.example.com:6379
```
And our initializer:
```ruby
split_config = YAML.load_file(Rails.root.join('config', 'split.yml'))
Split.redis = split_config[Rails.env]
```
### Redis Caching (v4.0+)
In some high-volume usage scenarios, Redis load can be incurred by repeated
fetches for fairly static data. Enabling caching will reduce this load.
```ruby
Split.configuration.cache = true
````
This currently caches:
- `Split::ExperimentCatalog.find`
- `Split::Experiment.start_time`
- `Split::Experiment.winner`
## Namespaces
If you're running multiple, separate instances of Split you may want
to namespace the keyspaces so they do not overlap. This is not unlike
the approach taken by many memcached clients.
This feature can be provided by the [redis-namespace](https://github.com/defunkt/redis-namespace)
library. To configure Split to use `Redis::Namespace`, do the following:
1. Add `redis-namespace` to your Gemfile:
```ruby
gem 'redis-namespace'
```
2. Configure `Split.redis` to use a `Redis::Namespace` instance (possible in an
initializer):
```ruby
redis = Redis.new(url: ENV['REDIS_URL']) # or whatever config you want
Split.redis = Redis::Namespace.new(:your_namespace, redis: redis)
```
## Outside of a Web Session
Split provides the Helper module to facilitate running experiments inside web sessions.
Alternatively, you can access the underlying Metric, Trial, Experiment and Alternative objects to
conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
trial.choose!
# get the result, returns either red or blue
trial.alternative.name
# if the goal has been achieved, increment the successful completions for this alternative.
if goal_achieved?
trial.complete!
end
```
## Algorithms
By default, Split ships with `Split::Algorithms::WeightedSample` that randomly selects from possible alternatives for a traditional a/b test.
It is possible to specify static weights to favor certain alternatives.
`Split::Algorithms::Whiplash` is an implementation of a [multi-armed bandit algorithm](http://stevehanov.ca/blog/index.php?id=132).
This algorithm will automatically weight the alternatives based on their relative performance,
choosing the better-performing ones more often as trials are completed.
`Split::Algorithms::BlockRandomization` is an algorithm that ensures equal
participation across all alternatives. This algorithm will choose the alternative
with the fewest participants. In the event of multiple minimum participant alternatives
(i.e. starting a new "Block") the algorithm will choose a random alternative from
those minimum participant alternatives.
Users may also write their own algorithms. The default algorithm may be specified globally in the configuration file, or on a per experiment basis using the experiments hash of the configuration file.
To change the algorithm globally for all experiments, use the following in your initializer:
```ruby
Split.configure do |config|
config.algorithm = Split::Algorithms::Whiplash
end
```
## Extensions
- [Split::Export](https://github.com/splitrb/split-export) - Easily export A/B test data out of Split.
- [Split::Analytics](https://github.com/splitrb/split-analytics) - Push test data to Google Analytics.
- [Split::Mongoid](https://github.com/MongoHQ/split-mongoid) - Store experiment data in mongoid (still uses redis).
- [Split::Cacheable](https://github.com/harrystech/split_cacheable) - Automatically create cache buckets per test.
- [Split::Counters](https://github.com/bernardkroes/split-counters) - Add counters per experiment and alternative.
- [Split::Cli](https://github.com/craigmcnamara/split-cli) - A CLI to trigger Split A/B tests.
## Screencast
Ryan bates has produced an excellent 10 minute screencast about split on the Railscasts site: [A/B Testing with Split](http://railscasts.com/episodes/331-a-b-testing-with-split)
## Blogposts
* [Recipe: A/B testing with KISSMetrics and the split gem](https://robots.thoughtbot.com/post/9595887299/recipe-a-b-testing-with-kissmetrics-and-the-split-gem)
* [Rails A/B testing with Split on Heroku](http://blog.nathanhumbert.com/2012/02/rails-ab-testing-with-split-on-heroku.html)
## Backers
Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/split#backer)]
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## Contribute
Please do! Over 70 different people have contributed to the project, you can see them all here: https://github.com/splitrb/split/graphs/contributors.
### Development
The source code is hosted at [GitHub](https://github.com/splitrb/split).
Report issues and feature requests on [GitHub Issues](https://github.com/splitrb/split/issues).
You can find a discussion form on [Google Groups](https://groups.google.com/d/forum/split-ruby).
### Tests
Run the tests like this:
# Start a Redis server in another tab.
redis-server
bundle
rake spec
### A Note on Patches and Pull Requests
* Fork the project.
* Make your feature addition or bug fix.
* Add tests for it. This is important so I don't break it in a
future version unintentionally.
* Add documentation if necessary.
* Commit. Do not mess with the rakefile, version, or history.
(If you want to have your own version, that is fine. But bump the version in a commit by itself, which I can ignore when I pull.)
* Send a pull request. Bonus points for topic branches.
### Code of Conduct
Please note that this project is released with a [Contributor Code of Conduct](CODE_OF_CONDUCT.md). By participating in this project you agree to abide by its terms.
## Copyright
[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
<MSG> split dashboard works with rails 3 or higher (#505)
<DFF> @@ -388,7 +388,7 @@ run Rack::URLMap.new \
"/split" => Split::Dashboard.new
```
-However, if you are using Rails 3: You can mount this inside your app routes by first adding this to the Gemfile:
+However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
| 1 | split dashboard works with rails 3 or higher (#505) | 1 | .md | md | mit | splitrb/split |
10070880 | <NME> helpers.rb
<BEF> # frozen_string_literal: true
module Split
module DashboardHelpers
def h(text)
Rack::Utils.escape_html(text)
end
def url(*path_parts)
[ path_prefix, path_parts ].join("/").squeeze("/")
end
def path_prefix
request.env["SCRIPT_NAME"]
end
def number_to_percentage(number, precision = 2)
round(number * 100)
def confidence_level(z_score)
return z_score if z_score.is_a? String
z = round(z_score.to_s.to_f, 3)
if z > 0.0
if z < 1.96
'no confidence'
elsif z < 2.57
'95% confidence'
elsif z < 3.29
'99% confidence'
else
'99.9% confidence'
end
elsif z < 0.0
if z > -1.96
'no confidence'
elsif z > -2.57
'95% confidence'
elsif z > -3.29
'99% confidence'
else
'99.9% confidence'
end
else
"No Change"
end
end
end
end
elsif z >= 1.65
"90% confidence"
else
"Insufficient confidence"
end
end
end
end
<MSG> Refactor confidence helper.
<DFF> @@ -19,30 +19,19 @@ module Split
def confidence_level(z_score)
return z_score if z_score.is_a? String
- z = round(z_score.to_s.to_f, 3)
- if z > 0.0
- if z < 1.96
- 'no confidence'
- elsif z < 2.57
- '95% confidence'
- elsif z < 3.29
- '99% confidence'
- else
- '99.9% confidence'
- end
- elsif z < 0.0
- if z > -1.96
- 'no confidence'
- elsif z > -2.57
- '95% confidence'
- elsif z > -3.29
- '99% confidence'
- else
- '99.9% confidence'
- end
+ z = round(z_score.to_s.to_f, 3).abs
+
+ if z == 0.0
+ 'No Change'
+ elsif z < 1.96
+ 'no confidence'
+ elsif z < 2.57
+ '95% confidence'
+ elsif z < 3.29
+ '99% confidence'
else
- "No Change"
+ '99.9% confidence'
end
end
end
-end
\ No newline at end of file
+end
| 12 | Refactor confidence helper. | 23 | .rb | rb | mit | splitrb/split |
10070881 | <NME> helpers.rb
<BEF> # frozen_string_literal: true
module Split
module DashboardHelpers
def h(text)
Rack::Utils.escape_html(text)
end
def url(*path_parts)
[ path_prefix, path_parts ].join("/").squeeze("/")
end
def path_prefix
request.env["SCRIPT_NAME"]
end
def number_to_percentage(number, precision = 2)
round(number * 100)
def confidence_level(z_score)
return z_score if z_score.is_a? String
z = round(z_score.to_s.to_f, 3)
if z > 0.0
if z < 1.96
'no confidence'
elsif z < 2.57
'95% confidence'
elsif z < 3.29
'99% confidence'
else
'99.9% confidence'
end
elsif z < 0.0
if z > -1.96
'no confidence'
elsif z > -2.57
'95% confidence'
elsif z > -3.29
'99% confidence'
else
'99.9% confidence'
end
else
"No Change"
end
end
end
end
elsif z >= 1.65
"90% confidence"
else
"Insufficient confidence"
end
end
end
end
<MSG> Refactor confidence helper.
<DFF> @@ -19,30 +19,19 @@ module Split
def confidence_level(z_score)
return z_score if z_score.is_a? String
- z = round(z_score.to_s.to_f, 3)
- if z > 0.0
- if z < 1.96
- 'no confidence'
- elsif z < 2.57
- '95% confidence'
- elsif z < 3.29
- '99% confidence'
- else
- '99.9% confidence'
- end
- elsif z < 0.0
- if z > -1.96
- 'no confidence'
- elsif z > -2.57
- '95% confidence'
- elsif z > -3.29
- '99% confidence'
- else
- '99.9% confidence'
- end
+ z = round(z_score.to_s.to_f, 3).abs
+
+ if z == 0.0
+ 'No Change'
+ elsif z < 1.96
+ 'no confidence'
+ elsif z < 2.57
+ '95% confidence'
+ elsif z < 3.29
+ '99% confidence'
else
- "No Change"
+ '99.9% confidence'
end
end
end
-end
\ No newline at end of file
+end
| 12 | Refactor confidence helper. | 23 | .rb | rb | mit | splitrb/split |
10070882 | <NME> helpers.rb
<BEF> # frozen_string_literal: true
module Split
module DashboardHelpers
def h(text)
Rack::Utils.escape_html(text)
end
def url(*path_parts)
[ path_prefix, path_parts ].join("/").squeeze("/")
end
def path_prefix
request.env["SCRIPT_NAME"]
end
def number_to_percentage(number, precision = 2)
round(number * 100)
def confidence_level(z_score)
return z_score if z_score.is_a? String
z = round(z_score.to_s.to_f, 3)
if z > 0.0
if z < 1.96
'no confidence'
elsif z < 2.57
'95% confidence'
elsif z < 3.29
'99% confidence'
else
'99.9% confidence'
end
elsif z < 0.0
if z > -1.96
'no confidence'
elsif z > -2.57
'95% confidence'
elsif z > -3.29
'99% confidence'
else
'99.9% confidence'
end
else
"No Change"
end
end
end
end
elsif z >= 1.65
"90% confidence"
else
"Insufficient confidence"
end
end
end
end
<MSG> Refactor confidence helper.
<DFF> @@ -19,30 +19,19 @@ module Split
def confidence_level(z_score)
return z_score if z_score.is_a? String
- z = round(z_score.to_s.to_f, 3)
- if z > 0.0
- if z < 1.96
- 'no confidence'
- elsif z < 2.57
- '95% confidence'
- elsif z < 3.29
- '99% confidence'
- else
- '99.9% confidence'
- end
- elsif z < 0.0
- if z > -1.96
- 'no confidence'
- elsif z > -2.57
- '95% confidence'
- elsif z > -3.29
- '99% confidence'
- else
- '99.9% confidence'
- end
+ z = round(z_score.to_s.to_f, 3).abs
+
+ if z == 0.0
+ 'No Change'
+ elsif z < 1.96
+ 'no confidence'
+ elsif z < 2.57
+ '95% confidence'
+ elsif z < 3.29
+ '99% confidence'
else
- "No Change"
+ '99.9% confidence'
end
end
end
-end
\ No newline at end of file
+end
| 12 | Refactor confidence helper. | 23 | .rb | rb | mit | splitrb/split |
10070883 | <NME> _experiment.erb
<BEF> <% unless goal.nil? %>
<% experiment_class = "experiment experiment_with_goal" %>
<% else %>
<% experiment_class = "experiment" %>
<% end %>
<% experiment.calc_winning_alternatives %>
<%
extra_columns = []
experiment.alternatives.each do |alternative|
extra_info = alternative.extra_info || {}
extra_columns += extra_info.keys
end
extra_columns.uniq!
summary_texts = {}
extra_columns.each do |column|
extra_infos = experiment.alternatives.map(&:extra_info).select{|extra_info| extra_info && extra_info[column] }
if extra_infos[0][column].kind_of?(Numeric)
summary_texts[column] = extra_infos.inject(0){|sum, extra_info| sum += extra_info[column]}
else
summary_texts[column] = "N/A"
<% total_participants = total_completed = 0 %>
<% experiment.alternatives.each do |alternative| %>
<tr>
<td><%= alternative.name %></td>
<td><%= alternative.participant_count %></td>
<td><%= alternative.participant_count - alternative.completed_count %></td>
<td><%= alternative.completed_count %></td>
<% unless metrics.empty? %>
<span class='goal'>Metrics:<%= metrics.map(&:name).join(', ') %></span>
<% end %>
</h2>
<% if goal.nil? %>
<div class='inline-controls'>
<small><%= experiment.start_time ? experiment.start_time.strftime('%Y-%m-%d') : 'Unknown' %></small>
<%= erb :_controls, :locals => {:experiment => experiment} %>
</div>
<% end %>
</div>
<table>
<tr>
<th>Alternative Name</th>
<th>Participants</th>
<th>Non-finished</th>
<th>Completed</th>
<th>Conversion Rate</th>
<% extra_columns.each do |column| %>
<th><%= column %></th>
<% end %>
<th>
<form>
<select id="dropdown-<%=experiment.jstring(goal)%>" name="dropdown-<%=experiment.jstring(goal)%>">
<option value="confidence-<%=experiment.jstring(goal)%>">Confidence</option>
<option value="probability-<%=experiment.jstring(goal)%>">Probability of being Winner</option>
</select>
</form>
</th>
<th>Finish</th>
</tr>
<% total_participants = total_completed = total_unfinished = 0 %>
<% experiment.alternatives.each do |alternative| %>
<tr>
<td>
<%= alternative.name %>
<% if alternative.control? %>
<em>control</em>
<% end %>
<form action="<%= url('force_alternative') + '?experiment=' + experiment.name %>" method='post'>
<input type='hidden' name='alternative' value='<%= h alternative.name %>'>
<input type="submit" value="Force for current user" class="green">
</form>
</td>
<td><%= alternative.participant_count %></td>
<td><%= alternative.unfinished_count %></td>
<td><%= alternative.completed_count(goal) %></td>
<td>
<%= number_to_percentage(alternative.conversion_rate(goal)) %>%
<% if experiment.control.conversion_rate(goal) > 0 && !alternative.control? %>
<% if alternative.conversion_rate(goal) > experiment.control.conversion_rate(goal) %>
<span class='better'>
+<%= number_to_percentage((alternative.conversion_rate(goal)/experiment.control.conversion_rate(goal))-1) %>%
</span>
<% elsif alternative.conversion_rate(goal) < experiment.control.conversion_rate(goal) %>
<span class='worse'>
<%= number_to_percentage((alternative.conversion_rate(goal)/experiment.control.conversion_rate(goal))-1) %>%
</span>
<% end %>
<% end %>
</td>
<script type="text/javascript" id="sourcecode">
$(document).ready(function(){
$('.probability-<%=experiment.jstring(goal)%>').hide();
$('#dropdown-<%=experiment.jstring(goal)%>').change(function() {
$('.box-<%=experiment.jstring(goal)%>').hide();
$('.' + $(this).val()).show();
});
});
</script>
<% extra_columns.each do |column| %>
<td><%= alternative.extra_info && alternative.extra_info[column] %></td>
<% end %>
<td>
<div class="box-<%=experiment.jstring(goal)%> confidence-<%=experiment.jstring(goal)%>">
<span title='z-score: <%= round(alternative.z_score(goal), 3) %>'><%= confidence_level(alternative.z_score(goal)) %></span>
<br>
</div>
<div class="box-<%=experiment.jstring(goal)%> probability-<%=experiment.jstring(goal)%>">
<span title="p_winner: <%= round(alternative.p_winner(goal), 3) %>"><%= number_to_percentage(round(alternative.p_winner(goal), 3)) %>%</span>
</div>
</td>
<td>
<% if experiment.has_winner? %>
<% if experiment.winner.name == alternative.name %>
Winner
<% else %>
Loser
<% end %>
<% else %>
<form action="<%= url('experiment') + '?experiment=' + experiment.name %>" method='post' onclick="return confirmWinner()">
<input type='hidden' name='alternative' value='<%= h alternative.name %>'>
<input type="submit" value="Use this" class="green">
</form>
<% end %>
</td>
</tr>
<% total_participants += alternative.participant_count %>
<% total_unfinished += alternative.unfinished_count %>
<% total_completed += alternative.completed_count(goal) %>
<% end %>
<tr class="totals">
<td>Totals</td>
<td><%= total_participants %></td>
<td><%= total_unfinished %></td>
<td><%= total_completed %></td>
<td>N/A</td>
<% extra_columns.each do |column| %>
<td>
<%= summary_texts[column] %>
</td>
<% end %>
<td>N/A</td>
<td>N/A</td>
</tr>
</table>
</div>
<MSG> Added 'control' note to the control alternative in each experiment on dashboard
<DFF> @@ -23,7 +23,12 @@
<% total_participants = total_completed = 0 %>
<% experiment.alternatives.each do |alternative| %>
<tr>
- <td><%= alternative.name %></td>
+ <td>
+ <%= alternative.name %>
+ <% if alternative.control? %>
+ <em>control</em>
+ <% end %>
+ </td>
<td><%= alternative.participant_count %></td>
<td><%= alternative.participant_count - alternative.completed_count %></td>
<td><%= alternative.completed_count %></td>
| 6 | Added 'control' note to the control alternative in each experiment on dashboard | 1 | .erb | erb | mit | splitrb/split |
10070884 | <NME> _experiment.erb
<BEF> <% unless goal.nil? %>
<% experiment_class = "experiment experiment_with_goal" %>
<% else %>
<% experiment_class = "experiment" %>
<% end %>
<% experiment.calc_winning_alternatives %>
<%
extra_columns = []
experiment.alternatives.each do |alternative|
extra_info = alternative.extra_info || {}
extra_columns += extra_info.keys
end
extra_columns.uniq!
summary_texts = {}
extra_columns.each do |column|
extra_infos = experiment.alternatives.map(&:extra_info).select{|extra_info| extra_info && extra_info[column] }
if extra_infos[0][column].kind_of?(Numeric)
summary_texts[column] = extra_infos.inject(0){|sum, extra_info| sum += extra_info[column]}
else
summary_texts[column] = "N/A"
<% total_participants = total_completed = 0 %>
<% experiment.alternatives.each do |alternative| %>
<tr>
<td><%= alternative.name %></td>
<td><%= alternative.participant_count %></td>
<td><%= alternative.participant_count - alternative.completed_count %></td>
<td><%= alternative.completed_count %></td>
<% unless metrics.empty? %>
<span class='goal'>Metrics:<%= metrics.map(&:name).join(', ') %></span>
<% end %>
</h2>
<% if goal.nil? %>
<div class='inline-controls'>
<small><%= experiment.start_time ? experiment.start_time.strftime('%Y-%m-%d') : 'Unknown' %></small>
<%= erb :_controls, :locals => {:experiment => experiment} %>
</div>
<% end %>
</div>
<table>
<tr>
<th>Alternative Name</th>
<th>Participants</th>
<th>Non-finished</th>
<th>Completed</th>
<th>Conversion Rate</th>
<% extra_columns.each do |column| %>
<th><%= column %></th>
<% end %>
<th>
<form>
<select id="dropdown-<%=experiment.jstring(goal)%>" name="dropdown-<%=experiment.jstring(goal)%>">
<option value="confidence-<%=experiment.jstring(goal)%>">Confidence</option>
<option value="probability-<%=experiment.jstring(goal)%>">Probability of being Winner</option>
</select>
</form>
</th>
<th>Finish</th>
</tr>
<% total_participants = total_completed = total_unfinished = 0 %>
<% experiment.alternatives.each do |alternative| %>
<tr>
<td>
<%= alternative.name %>
<% if alternative.control? %>
<em>control</em>
<% end %>
<form action="<%= url('force_alternative') + '?experiment=' + experiment.name %>" method='post'>
<input type='hidden' name='alternative' value='<%= h alternative.name %>'>
<input type="submit" value="Force for current user" class="green">
</form>
</td>
<td><%= alternative.participant_count %></td>
<td><%= alternative.unfinished_count %></td>
<td><%= alternative.completed_count(goal) %></td>
<td>
<%= number_to_percentage(alternative.conversion_rate(goal)) %>%
<% if experiment.control.conversion_rate(goal) > 0 && !alternative.control? %>
<% if alternative.conversion_rate(goal) > experiment.control.conversion_rate(goal) %>
<span class='better'>
+<%= number_to_percentage((alternative.conversion_rate(goal)/experiment.control.conversion_rate(goal))-1) %>%
</span>
<% elsif alternative.conversion_rate(goal) < experiment.control.conversion_rate(goal) %>
<span class='worse'>
<%= number_to_percentage((alternative.conversion_rate(goal)/experiment.control.conversion_rate(goal))-1) %>%
</span>
<% end %>
<% end %>
</td>
<script type="text/javascript" id="sourcecode">
$(document).ready(function(){
$('.probability-<%=experiment.jstring(goal)%>').hide();
$('#dropdown-<%=experiment.jstring(goal)%>').change(function() {
$('.box-<%=experiment.jstring(goal)%>').hide();
$('.' + $(this).val()).show();
});
});
</script>
<% extra_columns.each do |column| %>
<td><%= alternative.extra_info && alternative.extra_info[column] %></td>
<% end %>
<td>
<div class="box-<%=experiment.jstring(goal)%> confidence-<%=experiment.jstring(goal)%>">
<span title='z-score: <%= round(alternative.z_score(goal), 3) %>'><%= confidence_level(alternative.z_score(goal)) %></span>
<br>
</div>
<div class="box-<%=experiment.jstring(goal)%> probability-<%=experiment.jstring(goal)%>">
<span title="p_winner: <%= round(alternative.p_winner(goal), 3) %>"><%= number_to_percentage(round(alternative.p_winner(goal), 3)) %>%</span>
</div>
</td>
<td>
<% if experiment.has_winner? %>
<% if experiment.winner.name == alternative.name %>
Winner
<% else %>
Loser
<% end %>
<% else %>
<form action="<%= url('experiment') + '?experiment=' + experiment.name %>" method='post' onclick="return confirmWinner()">
<input type='hidden' name='alternative' value='<%= h alternative.name %>'>
<input type="submit" value="Use this" class="green">
</form>
<% end %>
</td>
</tr>
<% total_participants += alternative.participant_count %>
<% total_unfinished += alternative.unfinished_count %>
<% total_completed += alternative.completed_count(goal) %>
<% end %>
<tr class="totals">
<td>Totals</td>
<td><%= total_participants %></td>
<td><%= total_unfinished %></td>
<td><%= total_completed %></td>
<td>N/A</td>
<% extra_columns.each do |column| %>
<td>
<%= summary_texts[column] %>
</td>
<% end %>
<td>N/A</td>
<td>N/A</td>
</tr>
</table>
</div>
<MSG> Added 'control' note to the control alternative in each experiment on dashboard
<DFF> @@ -23,7 +23,12 @@
<% total_participants = total_completed = 0 %>
<% experiment.alternatives.each do |alternative| %>
<tr>
- <td><%= alternative.name %></td>
+ <td>
+ <%= alternative.name %>
+ <% if alternative.control? %>
+ <em>control</em>
+ <% end %>
+ </td>
<td><%= alternative.participant_count %></td>
<td><%= alternative.participant_count - alternative.completed_count %></td>
<td><%= alternative.completed_count %></td>
| 6 | Added 'control' note to the control alternative in each experiment on dashboard | 1 | .erb | erb | mit | splitrb/split |
10070885 | <NME> _experiment.erb
<BEF> <% unless goal.nil? %>
<% experiment_class = "experiment experiment_with_goal" %>
<% else %>
<% experiment_class = "experiment" %>
<% end %>
<% experiment.calc_winning_alternatives %>
<%
extra_columns = []
experiment.alternatives.each do |alternative|
extra_info = alternative.extra_info || {}
extra_columns += extra_info.keys
end
extra_columns.uniq!
summary_texts = {}
extra_columns.each do |column|
extra_infos = experiment.alternatives.map(&:extra_info).select{|extra_info| extra_info && extra_info[column] }
if extra_infos[0][column].kind_of?(Numeric)
summary_texts[column] = extra_infos.inject(0){|sum, extra_info| sum += extra_info[column]}
else
summary_texts[column] = "N/A"
<% total_participants = total_completed = 0 %>
<% experiment.alternatives.each do |alternative| %>
<tr>
<td><%= alternative.name %></td>
<td><%= alternative.participant_count %></td>
<td><%= alternative.participant_count - alternative.completed_count %></td>
<td><%= alternative.completed_count %></td>
<% unless metrics.empty? %>
<span class='goal'>Metrics:<%= metrics.map(&:name).join(', ') %></span>
<% end %>
</h2>
<% if goal.nil? %>
<div class='inline-controls'>
<small><%= experiment.start_time ? experiment.start_time.strftime('%Y-%m-%d') : 'Unknown' %></small>
<%= erb :_controls, :locals => {:experiment => experiment} %>
</div>
<% end %>
</div>
<table>
<tr>
<th>Alternative Name</th>
<th>Participants</th>
<th>Non-finished</th>
<th>Completed</th>
<th>Conversion Rate</th>
<% extra_columns.each do |column| %>
<th><%= column %></th>
<% end %>
<th>
<form>
<select id="dropdown-<%=experiment.jstring(goal)%>" name="dropdown-<%=experiment.jstring(goal)%>">
<option value="confidence-<%=experiment.jstring(goal)%>">Confidence</option>
<option value="probability-<%=experiment.jstring(goal)%>">Probability of being Winner</option>
</select>
</form>
</th>
<th>Finish</th>
</tr>
<% total_participants = total_completed = total_unfinished = 0 %>
<% experiment.alternatives.each do |alternative| %>
<tr>
<td>
<%= alternative.name %>
<% if alternative.control? %>
<em>control</em>
<% end %>
<form action="<%= url('force_alternative') + '?experiment=' + experiment.name %>" method='post'>
<input type='hidden' name='alternative' value='<%= h alternative.name %>'>
<input type="submit" value="Force for current user" class="green">
</form>
</td>
<td><%= alternative.participant_count %></td>
<td><%= alternative.unfinished_count %></td>
<td><%= alternative.completed_count(goal) %></td>
<td>
<%= number_to_percentage(alternative.conversion_rate(goal)) %>%
<% if experiment.control.conversion_rate(goal) > 0 && !alternative.control? %>
<% if alternative.conversion_rate(goal) > experiment.control.conversion_rate(goal) %>
<span class='better'>
+<%= number_to_percentage((alternative.conversion_rate(goal)/experiment.control.conversion_rate(goal))-1) %>%
</span>
<% elsif alternative.conversion_rate(goal) < experiment.control.conversion_rate(goal) %>
<span class='worse'>
<%= number_to_percentage((alternative.conversion_rate(goal)/experiment.control.conversion_rate(goal))-1) %>%
</span>
<% end %>
<% end %>
</td>
<script type="text/javascript" id="sourcecode">
$(document).ready(function(){
$('.probability-<%=experiment.jstring(goal)%>').hide();
$('#dropdown-<%=experiment.jstring(goal)%>').change(function() {
$('.box-<%=experiment.jstring(goal)%>').hide();
$('.' + $(this).val()).show();
});
});
</script>
<% extra_columns.each do |column| %>
<td><%= alternative.extra_info && alternative.extra_info[column] %></td>
<% end %>
<td>
<div class="box-<%=experiment.jstring(goal)%> confidence-<%=experiment.jstring(goal)%>">
<span title='z-score: <%= round(alternative.z_score(goal), 3) %>'><%= confidence_level(alternative.z_score(goal)) %></span>
<br>
</div>
<div class="box-<%=experiment.jstring(goal)%> probability-<%=experiment.jstring(goal)%>">
<span title="p_winner: <%= round(alternative.p_winner(goal), 3) %>"><%= number_to_percentage(round(alternative.p_winner(goal), 3)) %>%</span>
</div>
</td>
<td>
<% if experiment.has_winner? %>
<% if experiment.winner.name == alternative.name %>
Winner
<% else %>
Loser
<% end %>
<% else %>
<form action="<%= url('experiment') + '?experiment=' + experiment.name %>" method='post' onclick="return confirmWinner()">
<input type='hidden' name='alternative' value='<%= h alternative.name %>'>
<input type="submit" value="Use this" class="green">
</form>
<% end %>
</td>
</tr>
<% total_participants += alternative.participant_count %>
<% total_unfinished += alternative.unfinished_count %>
<% total_completed += alternative.completed_count(goal) %>
<% end %>
<tr class="totals">
<td>Totals</td>
<td><%= total_participants %></td>
<td><%= total_unfinished %></td>
<td><%= total_completed %></td>
<td>N/A</td>
<% extra_columns.each do |column| %>
<td>
<%= summary_texts[column] %>
</td>
<% end %>
<td>N/A</td>
<td>N/A</td>
</tr>
</table>
</div>
<MSG> Added 'control' note to the control alternative in each experiment on dashboard
<DFF> @@ -23,7 +23,12 @@
<% total_participants = total_completed = 0 %>
<% experiment.alternatives.each do |alternative| %>
<tr>
- <td><%= alternative.name %></td>
+ <td>
+ <%= alternative.name %>
+ <% if alternative.control? %>
+ <em>control</em>
+ <% end %>
+ </td>
<td><%= alternative.participant_count %></td>
<td><%= alternative.participant_count - alternative.completed_count %></td>
<td><%= alternative.completed_count %></td>
| 6 | Added 'control' note to the control alternative in each experiment on dashboard | 1 | .erb | erb | mit | splitrb/split |
10070886 | <NME> experiment.rb
<BEF> # frozen_string_literal: true
module Split
class Experiment
attr_accessor :name
attr_accessor :goals
attr_accessor :alternative_probabilities
attr_accessor :metadata
attr_reader :alternatives
attr_reader :resettable
DEFAULT_OPTIONS = {
resettable: true
}
def self.find(name)
Split.cache(:experiments, name) do
return unless Split.redis.exists?(name)
Experiment.new(name).tap { |exp| exp.load_from_redis }
end
end
def initialize(name, options = {})
options = DEFAULT_OPTIONS.merge(options)
@name = name.to_s
extract_alternatives_from_options(options)
end
def self.finished_key(key)
"#{key}:finished"
end
def set_alternatives_and_options(options)
options_with_defaults = DEFAULT_OPTIONS.merge(
options.reject { |k, v| v.nil? }
)
Split.redis.smembers(:experiments).map {|e| find(e)}
end
def self.find(name)
if Split.redis.exists(name)
obj = self.new name
if alts[0].is_a? Hash
alts = alts[0].map { |k, v| { k => v } }
end
end
if alts.empty?
exp_config = Split.configuration.experiment_for(name)
if exp_config
alts = load_alternatives_from_configuration
options[:goals] = Split::GoalsCollection.new(@name).load_from_configuration
options[:metadata] = load_metadata_from_configuration
options[:resettable] = exp_config[:resettable]
options[:algorithm] = exp_config[:algorithm]
end
end
options[:alternatives] = alts
set_alternatives_and_options(options)
# calculate probability that each alternative is the winner
@alternative_probabilities = {}
alts
end
def save
validate!
if new_record?
start unless Split.configuration.start_manually
persist_experiment_configuration
elsif experiment_configuration_has_changed?
reset unless Split.configuration.reset_manually
persist_experiment_configuration
end
redis.hmset(experiment_config_key, :resettable, resettable.to_s,
:algorithm, algorithm.to_s)
self
end
def validate!
if @alternatives.empty? && Split.configuration.experiment_for(@name).nil?
raise ExperimentNotFound.new("Experiment #{@name} not found")
end
@alternatives.each { |a| a.validate! }
goals_collection.validate!
end
def new_record?
ExperimentCatalog.find(name).nil?
end
def ==(obj)
self.name == obj.name
end
def [](name)
alternatives.find { |a| a.name == name }
end
def algorithm
@algorithm ||= Split.configuration.algorithm
end
def algorithm=(algorithm)
@algorithm = algorithm.is_a?(String) ? algorithm.constantize : algorithm
end
def resettable=(resettable)
@resettable = resettable.is_a?(String) ? resettable == "true" : resettable
end
def alternatives=(alts)
@alternatives = alts.map do |alternative|
if alternative.kind_of?(Split::Alternative)
alternative
else
Split::Alternative.new(alternative, @name)
end
end
end
def winner
Split.cache(:experiment_winner, name) do
experiment_winner = redis.hget(:experiment_winner, name)
if experiment_winner
Split::Alternative.new(experiment_winner, name)
else
nil
end
end
end
def has_winner?
return @has_winner if defined? @has_winner
@has_winner = !winner.nil?
end
def winner=(winner_name)
redis.hset(:experiment_winner, name, winner_name.to_s)
@has_winner = true
Split.configuration.on_experiment_winner_choose.call(self)
end
def participant_count
alternatives.inject(0) { |sum, a| sum + a.participant_count }
end
def control
alternatives.first
end
def reset_winner
redis.hdel(:experiment_winner, name)
@has_winner = false
Split::Cache.clear_key(@name)
end
def start
redis.hset(:experiment_start_times, @name, Time.now.to_i)
end
def start_time
Split.cache(:experiment_start_times, @name) do
t = redis.hget(:experiment_start_times, @name)
if t
# Check if stored time is an integer
if t =~ /^[-+]?[0-9]+$/
Time.at(t.to_i)
else
Time.parse(t)
end
end
end
end
def next_alternative
winner || random_alternative
end
def random_alternative
if alternatives.length > 1
algorithm.choose_alternative(self)
else
alternatives.first
end
end
def version
@version ||= (redis.get("#{name}:version").to_i || 0)
end
def increment_version
@version = redis.incr("#{name}:version")
end
def key
if version.to_i > 0
"#{name}:#{version}"
else
name
end
end
def goals_key
"#{name}:goals"
end
def finished_key
self.class.finished_key(key)
end
def metadata_key
"#{name}:metadata"
end
def resettable?
resettable
end
def reset
Split.configuration.on_before_experiment_reset.call(self)
Split::Cache.clear_key(@name)
alternatives.each(&:reset)
reset_winner
Split.configuration.on_experiment_reset.call(self)
increment_version
end
def delete
Split.configuration.on_before_experiment_delete.call(self)
if Split.configuration.start_manually
redis.hdel(:experiment_start_times, @name)
end
reset_winner
redis.srem(:experiments, name)
remove_experiment_cohorting
remove_experiment_configuration
Split.configuration.on_experiment_delete.call(self)
increment_version
end
def delete_metadata
redis.del(metadata_key)
end
def load_from_redis
exp_config = redis.hgetall(experiment_config_key)
options = {
resettable: exp_config["resettable"],
algorithm: exp_config["algorithm"],
alternatives: load_alternatives_from_redis,
goals: Split::GoalsCollection.new(@name).load_from_redis,
metadata: load_metadata_from_redis
}
set_alternatives_and_options(options)
end
def calc_winning_alternatives
# Cache the winning alternatives so we recalculate them once per the specified interval.
intervals_since_epoch =
Time.now.utc.to_i / Split.configuration.winning_alternative_recalculation_interval
if self.calc_time != intervals_since_epoch
if goals.empty?
self.estimate_winning_alternative
else
goals.each do |goal|
self.estimate_winning_alternative(goal)
end
end
self.calc_time = intervals_since_epoch
self.save
end
end
def estimate_winning_alternative(goal = nil)
# initialize a hash of beta distributions based on the alternatives' conversion rates
beta_params = calc_beta_params(goal)
winning_alternatives = []
Split.configuration.beta_probability_simulations.times do
# calculate simulated conversion rates from the beta distributions
simulated_cr_hash = calc_simulated_conversion_rates(beta_params)
winning_alternative = find_simulated_winner(simulated_cr_hash)
# push the winning pair to the winning_alternatives array
winning_alternatives.push(winning_alternative)
end
winning_counts = count_simulated_wins(winning_alternatives)
@alternative_probabilities = calc_alternative_probabilities(winning_counts, Split.configuration.beta_probability_simulations)
write_to_alternatives(goal)
self.save
end
def write_to_alternatives(goal = nil)
alternatives.each do |alternative|
alternative.set_p_winner(@alternative_probabilities[alternative], goal)
end
end
def calc_alternative_probabilities(winning_counts, number_of_simulations)
alternative_probabilities = {}
winning_counts.each do |alternative, wins|
alternative_probabilities[alternative] = wins / number_of_simulations.to_f
end
alternative_probabilities
end
def count_simulated_wins(winning_alternatives)
# initialize a hash to keep track of winning alternative in simulations
winning_counts = {}
alternatives.each do |alternative|
winning_counts[alternative] = 0
end
# count number of times each alternative won, calculate probabilities, place in hash
winning_alternatives.each do |alternative|
winning_counts[alternative] += 1
end
winning_counts
end
def find_simulated_winner(simulated_cr_hash)
# figure out which alternative had the highest simulated conversion rate
winning_pair = ["", 0.0]
simulated_cr_hash.each do |alternative, rate|
if rate > winning_pair[1]
winning_pair = [alternative, rate]
end
end
winner = winning_pair[0]
winner
end
def calc_simulated_conversion_rates(beta_params)
simulated_cr_hash = {}
# create a hash which has the conversion rate pulled from each alternative's beta distribution
beta_params.each do |alternative, params|
alpha = params[0]
beta = params[1]
simulated_conversion_rate = Split::Algorithms.beta_distribution_rng(alpha, beta)
simulated_cr_hash[alternative] = simulated_conversion_rate
end
simulated_cr_hash
end
def calc_beta_params(goal = nil)
beta_params = {}
alternatives.each do |alternative|
conversions = goal.nil? ? alternative.completed_count : alternative.completed_count(goal)
alpha = 1 + conversions
beta = 1 + alternative.participant_count - conversions
params = [alpha, beta]
beta_params[alternative] = params
end
beta_params
end
def calc_time=(time)
redis.hset(experiment_config_key, :calc_time, time)
end
def calc_time
redis.hget(experiment_config_key, :calc_time).to_i
end
def jstring(goal = nil)
js_id = if goal.nil?
name
else
name + "-" + goal
end
js_id.gsub("/", "--")
end
def cohorting_disabled?
@cohorting_disabled ||= begin
value = redis.hget(experiment_config_key, :cohorting)
value.nil? ? false : value.downcase == "true"
end
end
def disable_cohorting
@cohorting_disabled = true
redis.hset(experiment_config_key, :cohorting, true.to_s)
end
def enable_cohorting
@cohorting_disabled = false
redis.hset(experiment_config_key, :cohorting, false.to_s)
end
protected
def experiment_config_key
"experiment_configurations/#{@name}"
end
def load_metadata_from_configuration
Split.configuration.experiment_for(@name)[:metadata]
end
def load_metadata_from_redis
meta = redis.get(metadata_key)
JSON.parse(meta) unless meta.nil?
end
def load_alternatives_from_configuration
alts = Split.configuration.experiment_for(@name)[:alternatives]
raise ArgumentError, "Experiment configuration is missing :alternatives array" unless alts
if alts.is_a?(Hash)
alts.keys
else
alts.flatten
end
end
def load_alternatives_from_redis
alternatives = redis.lrange(@name, 0, -1)
alternatives.map do |alt|
alt = begin
JSON.parse(alt)
rescue
alt
end
Split::Alternative.new(alt, @name)
end
end
private
def redis
Split.redis
end
def redis_interface
RedisInterface.new
end
def persist_experiment_configuration
redis_interface.add_to_set(:experiments, name)
redis_interface.persist_list(name, @alternatives.map { |alt| { alt.name => alt.weight }.to_json })
goals_collection.save
if @metadata
redis.set(metadata_key, @metadata.to_json)
else
delete_metadata
end
end
def remove_experiment_configuration
@alternatives.each(&:delete)
goals_collection.delete
delete_metadata
redis.del(@name)
end
def experiment_configuration_has_changed?
existing_experiment = Experiment.find(@name)
existing_experiment.alternatives.map(&:to_s) != @alternatives.map(&:to_s) ||
existing_experiment.goals != @goals ||
existing_experiment.metadata != @metadata
end
def goals_collection
Split::GoalsCollection.new(@name, @goals)
end
def remove_experiment_cohorting
@cohorting_disabled = false
redis.hdel(experiment_config_key, :cohorting)
end
end
end
<MSG> Merge pull request #204 from swrobel/master
Sort experiments on Dashboard so "active" ones without a winner appear first
<DFF> @@ -41,6 +41,11 @@ module Split
Split.redis.smembers(:experiments).map {|e| find(e)}
end
+ # Return experiments without a winner (considered "active") first
+ def self.all_active_first
+ all.sort_by{|e| e.winner ? 1 : 0} # sort_by hack since true/false isn't sortable
+ end
+
def self.find(name)
if Split.redis.exists(name)
obj = self.new name
| 5 | Merge pull request #204 from swrobel/master | 0 | .rb | rb | mit | splitrb/split |
10070887 | <NME> experiment.rb
<BEF> # frozen_string_literal: true
module Split
class Experiment
attr_accessor :name
attr_accessor :goals
attr_accessor :alternative_probabilities
attr_accessor :metadata
attr_reader :alternatives
attr_reader :resettable
DEFAULT_OPTIONS = {
resettable: true
}
def self.find(name)
Split.cache(:experiments, name) do
return unless Split.redis.exists?(name)
Experiment.new(name).tap { |exp| exp.load_from_redis }
end
end
def initialize(name, options = {})
options = DEFAULT_OPTIONS.merge(options)
@name = name.to_s
extract_alternatives_from_options(options)
end
def self.finished_key(key)
"#{key}:finished"
end
def set_alternatives_and_options(options)
options_with_defaults = DEFAULT_OPTIONS.merge(
options.reject { |k, v| v.nil? }
)
Split.redis.smembers(:experiments).map {|e| find(e)}
end
def self.find(name)
if Split.redis.exists(name)
obj = self.new name
if alts[0].is_a? Hash
alts = alts[0].map { |k, v| { k => v } }
end
end
if alts.empty?
exp_config = Split.configuration.experiment_for(name)
if exp_config
alts = load_alternatives_from_configuration
options[:goals] = Split::GoalsCollection.new(@name).load_from_configuration
options[:metadata] = load_metadata_from_configuration
options[:resettable] = exp_config[:resettable]
options[:algorithm] = exp_config[:algorithm]
end
end
options[:alternatives] = alts
set_alternatives_and_options(options)
# calculate probability that each alternative is the winner
@alternative_probabilities = {}
alts
end
def save
validate!
if new_record?
start unless Split.configuration.start_manually
persist_experiment_configuration
elsif experiment_configuration_has_changed?
reset unless Split.configuration.reset_manually
persist_experiment_configuration
end
redis.hmset(experiment_config_key, :resettable, resettable.to_s,
:algorithm, algorithm.to_s)
self
end
def validate!
if @alternatives.empty? && Split.configuration.experiment_for(@name).nil?
raise ExperimentNotFound.new("Experiment #{@name} not found")
end
@alternatives.each { |a| a.validate! }
goals_collection.validate!
end
def new_record?
ExperimentCatalog.find(name).nil?
end
def ==(obj)
self.name == obj.name
end
def [](name)
alternatives.find { |a| a.name == name }
end
def algorithm
@algorithm ||= Split.configuration.algorithm
end
def algorithm=(algorithm)
@algorithm = algorithm.is_a?(String) ? algorithm.constantize : algorithm
end
def resettable=(resettable)
@resettable = resettable.is_a?(String) ? resettable == "true" : resettable
end
def alternatives=(alts)
@alternatives = alts.map do |alternative|
if alternative.kind_of?(Split::Alternative)
alternative
else
Split::Alternative.new(alternative, @name)
end
end
end
def winner
Split.cache(:experiment_winner, name) do
experiment_winner = redis.hget(:experiment_winner, name)
if experiment_winner
Split::Alternative.new(experiment_winner, name)
else
nil
end
end
end
def has_winner?
return @has_winner if defined? @has_winner
@has_winner = !winner.nil?
end
def winner=(winner_name)
redis.hset(:experiment_winner, name, winner_name.to_s)
@has_winner = true
Split.configuration.on_experiment_winner_choose.call(self)
end
def participant_count
alternatives.inject(0) { |sum, a| sum + a.participant_count }
end
def control
alternatives.first
end
def reset_winner
redis.hdel(:experiment_winner, name)
@has_winner = false
Split::Cache.clear_key(@name)
end
def start
redis.hset(:experiment_start_times, @name, Time.now.to_i)
end
def start_time
Split.cache(:experiment_start_times, @name) do
t = redis.hget(:experiment_start_times, @name)
if t
# Check if stored time is an integer
if t =~ /^[-+]?[0-9]+$/
Time.at(t.to_i)
else
Time.parse(t)
end
end
end
end
def next_alternative
winner || random_alternative
end
def random_alternative
if alternatives.length > 1
algorithm.choose_alternative(self)
else
alternatives.first
end
end
def version
@version ||= (redis.get("#{name}:version").to_i || 0)
end
def increment_version
@version = redis.incr("#{name}:version")
end
def key
if version.to_i > 0
"#{name}:#{version}"
else
name
end
end
def goals_key
"#{name}:goals"
end
def finished_key
self.class.finished_key(key)
end
def metadata_key
"#{name}:metadata"
end
def resettable?
resettable
end
def reset
Split.configuration.on_before_experiment_reset.call(self)
Split::Cache.clear_key(@name)
alternatives.each(&:reset)
reset_winner
Split.configuration.on_experiment_reset.call(self)
increment_version
end
def delete
Split.configuration.on_before_experiment_delete.call(self)
if Split.configuration.start_manually
redis.hdel(:experiment_start_times, @name)
end
reset_winner
redis.srem(:experiments, name)
remove_experiment_cohorting
remove_experiment_configuration
Split.configuration.on_experiment_delete.call(self)
increment_version
end
def delete_metadata
redis.del(metadata_key)
end
def load_from_redis
exp_config = redis.hgetall(experiment_config_key)
options = {
resettable: exp_config["resettable"],
algorithm: exp_config["algorithm"],
alternatives: load_alternatives_from_redis,
goals: Split::GoalsCollection.new(@name).load_from_redis,
metadata: load_metadata_from_redis
}
set_alternatives_and_options(options)
end
def calc_winning_alternatives
# Cache the winning alternatives so we recalculate them once per the specified interval.
intervals_since_epoch =
Time.now.utc.to_i / Split.configuration.winning_alternative_recalculation_interval
if self.calc_time != intervals_since_epoch
if goals.empty?
self.estimate_winning_alternative
else
goals.each do |goal|
self.estimate_winning_alternative(goal)
end
end
self.calc_time = intervals_since_epoch
self.save
end
end
def estimate_winning_alternative(goal = nil)
# initialize a hash of beta distributions based on the alternatives' conversion rates
beta_params = calc_beta_params(goal)
winning_alternatives = []
Split.configuration.beta_probability_simulations.times do
# calculate simulated conversion rates from the beta distributions
simulated_cr_hash = calc_simulated_conversion_rates(beta_params)
winning_alternative = find_simulated_winner(simulated_cr_hash)
# push the winning pair to the winning_alternatives array
winning_alternatives.push(winning_alternative)
end
winning_counts = count_simulated_wins(winning_alternatives)
@alternative_probabilities = calc_alternative_probabilities(winning_counts, Split.configuration.beta_probability_simulations)
write_to_alternatives(goal)
self.save
end
def write_to_alternatives(goal = nil)
alternatives.each do |alternative|
alternative.set_p_winner(@alternative_probabilities[alternative], goal)
end
end
def calc_alternative_probabilities(winning_counts, number_of_simulations)
alternative_probabilities = {}
winning_counts.each do |alternative, wins|
alternative_probabilities[alternative] = wins / number_of_simulations.to_f
end
alternative_probabilities
end
def count_simulated_wins(winning_alternatives)
# initialize a hash to keep track of winning alternative in simulations
winning_counts = {}
alternatives.each do |alternative|
winning_counts[alternative] = 0
end
# count number of times each alternative won, calculate probabilities, place in hash
winning_alternatives.each do |alternative|
winning_counts[alternative] += 1
end
winning_counts
end
def find_simulated_winner(simulated_cr_hash)
# figure out which alternative had the highest simulated conversion rate
winning_pair = ["", 0.0]
simulated_cr_hash.each do |alternative, rate|
if rate > winning_pair[1]
winning_pair = [alternative, rate]
end
end
winner = winning_pair[0]
winner
end
def calc_simulated_conversion_rates(beta_params)
simulated_cr_hash = {}
# create a hash which has the conversion rate pulled from each alternative's beta distribution
beta_params.each do |alternative, params|
alpha = params[0]
beta = params[1]
simulated_conversion_rate = Split::Algorithms.beta_distribution_rng(alpha, beta)
simulated_cr_hash[alternative] = simulated_conversion_rate
end
simulated_cr_hash
end
def calc_beta_params(goal = nil)
beta_params = {}
alternatives.each do |alternative|
conversions = goal.nil? ? alternative.completed_count : alternative.completed_count(goal)
alpha = 1 + conversions
beta = 1 + alternative.participant_count - conversions
params = [alpha, beta]
beta_params[alternative] = params
end
beta_params
end
def calc_time=(time)
redis.hset(experiment_config_key, :calc_time, time)
end
def calc_time
redis.hget(experiment_config_key, :calc_time).to_i
end
def jstring(goal = nil)
js_id = if goal.nil?
name
else
name + "-" + goal
end
js_id.gsub("/", "--")
end
def cohorting_disabled?
@cohorting_disabled ||= begin
value = redis.hget(experiment_config_key, :cohorting)
value.nil? ? false : value.downcase == "true"
end
end
def disable_cohorting
@cohorting_disabled = true
redis.hset(experiment_config_key, :cohorting, true.to_s)
end
def enable_cohorting
@cohorting_disabled = false
redis.hset(experiment_config_key, :cohorting, false.to_s)
end
protected
def experiment_config_key
"experiment_configurations/#{@name}"
end
def load_metadata_from_configuration
Split.configuration.experiment_for(@name)[:metadata]
end
def load_metadata_from_redis
meta = redis.get(metadata_key)
JSON.parse(meta) unless meta.nil?
end
def load_alternatives_from_configuration
alts = Split.configuration.experiment_for(@name)[:alternatives]
raise ArgumentError, "Experiment configuration is missing :alternatives array" unless alts
if alts.is_a?(Hash)
alts.keys
else
alts.flatten
end
end
def load_alternatives_from_redis
alternatives = redis.lrange(@name, 0, -1)
alternatives.map do |alt|
alt = begin
JSON.parse(alt)
rescue
alt
end
Split::Alternative.new(alt, @name)
end
end
private
def redis
Split.redis
end
def redis_interface
RedisInterface.new
end
def persist_experiment_configuration
redis_interface.add_to_set(:experiments, name)
redis_interface.persist_list(name, @alternatives.map { |alt| { alt.name => alt.weight }.to_json })
goals_collection.save
if @metadata
redis.set(metadata_key, @metadata.to_json)
else
delete_metadata
end
end
def remove_experiment_configuration
@alternatives.each(&:delete)
goals_collection.delete
delete_metadata
redis.del(@name)
end
def experiment_configuration_has_changed?
existing_experiment = Experiment.find(@name)
existing_experiment.alternatives.map(&:to_s) != @alternatives.map(&:to_s) ||
existing_experiment.goals != @goals ||
existing_experiment.metadata != @metadata
end
def goals_collection
Split::GoalsCollection.new(@name, @goals)
end
def remove_experiment_cohorting
@cohorting_disabled = false
redis.hdel(experiment_config_key, :cohorting)
end
end
end
<MSG> Merge pull request #204 from swrobel/master
Sort experiments on Dashboard so "active" ones without a winner appear first
<DFF> @@ -41,6 +41,11 @@ module Split
Split.redis.smembers(:experiments).map {|e| find(e)}
end
+ # Return experiments without a winner (considered "active") first
+ def self.all_active_first
+ all.sort_by{|e| e.winner ? 1 : 0} # sort_by hack since true/false isn't sortable
+ end
+
def self.find(name)
if Split.redis.exists(name)
obj = self.new name
| 5 | Merge pull request #204 from swrobel/master | 0 | .rb | rb | mit | splitrb/split |
10070888 | <NME> experiment.rb
<BEF> # frozen_string_literal: true
module Split
class Experiment
attr_accessor :name
attr_accessor :goals
attr_accessor :alternative_probabilities
attr_accessor :metadata
attr_reader :alternatives
attr_reader :resettable
DEFAULT_OPTIONS = {
resettable: true
}
def self.find(name)
Split.cache(:experiments, name) do
return unless Split.redis.exists?(name)
Experiment.new(name).tap { |exp| exp.load_from_redis }
end
end
def initialize(name, options = {})
options = DEFAULT_OPTIONS.merge(options)
@name = name.to_s
extract_alternatives_from_options(options)
end
def self.finished_key(key)
"#{key}:finished"
end
def set_alternatives_and_options(options)
options_with_defaults = DEFAULT_OPTIONS.merge(
options.reject { |k, v| v.nil? }
)
Split.redis.smembers(:experiments).map {|e| find(e)}
end
def self.find(name)
if Split.redis.exists(name)
obj = self.new name
if alts[0].is_a? Hash
alts = alts[0].map { |k, v| { k => v } }
end
end
if alts.empty?
exp_config = Split.configuration.experiment_for(name)
if exp_config
alts = load_alternatives_from_configuration
options[:goals] = Split::GoalsCollection.new(@name).load_from_configuration
options[:metadata] = load_metadata_from_configuration
options[:resettable] = exp_config[:resettable]
options[:algorithm] = exp_config[:algorithm]
end
end
options[:alternatives] = alts
set_alternatives_and_options(options)
# calculate probability that each alternative is the winner
@alternative_probabilities = {}
alts
end
def save
validate!
if new_record?
start unless Split.configuration.start_manually
persist_experiment_configuration
elsif experiment_configuration_has_changed?
reset unless Split.configuration.reset_manually
persist_experiment_configuration
end
redis.hmset(experiment_config_key, :resettable, resettable.to_s,
:algorithm, algorithm.to_s)
self
end
def validate!
if @alternatives.empty? && Split.configuration.experiment_for(@name).nil?
raise ExperimentNotFound.new("Experiment #{@name} not found")
end
@alternatives.each { |a| a.validate! }
goals_collection.validate!
end
def new_record?
ExperimentCatalog.find(name).nil?
end
def ==(obj)
self.name == obj.name
end
def [](name)
alternatives.find { |a| a.name == name }
end
def algorithm
@algorithm ||= Split.configuration.algorithm
end
def algorithm=(algorithm)
@algorithm = algorithm.is_a?(String) ? algorithm.constantize : algorithm
end
def resettable=(resettable)
@resettable = resettable.is_a?(String) ? resettable == "true" : resettable
end
def alternatives=(alts)
@alternatives = alts.map do |alternative|
if alternative.kind_of?(Split::Alternative)
alternative
else
Split::Alternative.new(alternative, @name)
end
end
end
def winner
Split.cache(:experiment_winner, name) do
experiment_winner = redis.hget(:experiment_winner, name)
if experiment_winner
Split::Alternative.new(experiment_winner, name)
else
nil
end
end
end
def has_winner?
return @has_winner if defined? @has_winner
@has_winner = !winner.nil?
end
def winner=(winner_name)
redis.hset(:experiment_winner, name, winner_name.to_s)
@has_winner = true
Split.configuration.on_experiment_winner_choose.call(self)
end
def participant_count
alternatives.inject(0) { |sum, a| sum + a.participant_count }
end
def control
alternatives.first
end
def reset_winner
redis.hdel(:experiment_winner, name)
@has_winner = false
Split::Cache.clear_key(@name)
end
def start
redis.hset(:experiment_start_times, @name, Time.now.to_i)
end
def start_time
Split.cache(:experiment_start_times, @name) do
t = redis.hget(:experiment_start_times, @name)
if t
# Check if stored time is an integer
if t =~ /^[-+]?[0-9]+$/
Time.at(t.to_i)
else
Time.parse(t)
end
end
end
end
def next_alternative
winner || random_alternative
end
def random_alternative
if alternatives.length > 1
algorithm.choose_alternative(self)
else
alternatives.first
end
end
def version
@version ||= (redis.get("#{name}:version").to_i || 0)
end
def increment_version
@version = redis.incr("#{name}:version")
end
def key
if version.to_i > 0
"#{name}:#{version}"
else
name
end
end
def goals_key
"#{name}:goals"
end
def finished_key
self.class.finished_key(key)
end
def metadata_key
"#{name}:metadata"
end
def resettable?
resettable
end
def reset
Split.configuration.on_before_experiment_reset.call(self)
Split::Cache.clear_key(@name)
alternatives.each(&:reset)
reset_winner
Split.configuration.on_experiment_reset.call(self)
increment_version
end
def delete
Split.configuration.on_before_experiment_delete.call(self)
if Split.configuration.start_manually
redis.hdel(:experiment_start_times, @name)
end
reset_winner
redis.srem(:experiments, name)
remove_experiment_cohorting
remove_experiment_configuration
Split.configuration.on_experiment_delete.call(self)
increment_version
end
def delete_metadata
redis.del(metadata_key)
end
def load_from_redis
exp_config = redis.hgetall(experiment_config_key)
options = {
resettable: exp_config["resettable"],
algorithm: exp_config["algorithm"],
alternatives: load_alternatives_from_redis,
goals: Split::GoalsCollection.new(@name).load_from_redis,
metadata: load_metadata_from_redis
}
set_alternatives_and_options(options)
end
def calc_winning_alternatives
# Cache the winning alternatives so we recalculate them once per the specified interval.
intervals_since_epoch =
Time.now.utc.to_i / Split.configuration.winning_alternative_recalculation_interval
if self.calc_time != intervals_since_epoch
if goals.empty?
self.estimate_winning_alternative
else
goals.each do |goal|
self.estimate_winning_alternative(goal)
end
end
self.calc_time = intervals_since_epoch
self.save
end
end
def estimate_winning_alternative(goal = nil)
# initialize a hash of beta distributions based on the alternatives' conversion rates
beta_params = calc_beta_params(goal)
winning_alternatives = []
Split.configuration.beta_probability_simulations.times do
# calculate simulated conversion rates from the beta distributions
simulated_cr_hash = calc_simulated_conversion_rates(beta_params)
winning_alternative = find_simulated_winner(simulated_cr_hash)
# push the winning pair to the winning_alternatives array
winning_alternatives.push(winning_alternative)
end
winning_counts = count_simulated_wins(winning_alternatives)
@alternative_probabilities = calc_alternative_probabilities(winning_counts, Split.configuration.beta_probability_simulations)
write_to_alternatives(goal)
self.save
end
def write_to_alternatives(goal = nil)
alternatives.each do |alternative|
alternative.set_p_winner(@alternative_probabilities[alternative], goal)
end
end
def calc_alternative_probabilities(winning_counts, number_of_simulations)
alternative_probabilities = {}
winning_counts.each do |alternative, wins|
alternative_probabilities[alternative] = wins / number_of_simulations.to_f
end
alternative_probabilities
end
def count_simulated_wins(winning_alternatives)
# initialize a hash to keep track of winning alternative in simulations
winning_counts = {}
alternatives.each do |alternative|
winning_counts[alternative] = 0
end
# count number of times each alternative won, calculate probabilities, place in hash
winning_alternatives.each do |alternative|
winning_counts[alternative] += 1
end
winning_counts
end
def find_simulated_winner(simulated_cr_hash)
# figure out which alternative had the highest simulated conversion rate
winning_pair = ["", 0.0]
simulated_cr_hash.each do |alternative, rate|
if rate > winning_pair[1]
winning_pair = [alternative, rate]
end
end
winner = winning_pair[0]
winner
end
def calc_simulated_conversion_rates(beta_params)
simulated_cr_hash = {}
# create a hash which has the conversion rate pulled from each alternative's beta distribution
beta_params.each do |alternative, params|
alpha = params[0]
beta = params[1]
simulated_conversion_rate = Split::Algorithms.beta_distribution_rng(alpha, beta)
simulated_cr_hash[alternative] = simulated_conversion_rate
end
simulated_cr_hash
end
def calc_beta_params(goal = nil)
beta_params = {}
alternatives.each do |alternative|
conversions = goal.nil? ? alternative.completed_count : alternative.completed_count(goal)
alpha = 1 + conversions
beta = 1 + alternative.participant_count - conversions
params = [alpha, beta]
beta_params[alternative] = params
end
beta_params
end
def calc_time=(time)
redis.hset(experiment_config_key, :calc_time, time)
end
def calc_time
redis.hget(experiment_config_key, :calc_time).to_i
end
def jstring(goal = nil)
js_id = if goal.nil?
name
else
name + "-" + goal
end
js_id.gsub("/", "--")
end
def cohorting_disabled?
@cohorting_disabled ||= begin
value = redis.hget(experiment_config_key, :cohorting)
value.nil? ? false : value.downcase == "true"
end
end
def disable_cohorting
@cohorting_disabled = true
redis.hset(experiment_config_key, :cohorting, true.to_s)
end
def enable_cohorting
@cohorting_disabled = false
redis.hset(experiment_config_key, :cohorting, false.to_s)
end
protected
def experiment_config_key
"experiment_configurations/#{@name}"
end
def load_metadata_from_configuration
Split.configuration.experiment_for(@name)[:metadata]
end
def load_metadata_from_redis
meta = redis.get(metadata_key)
JSON.parse(meta) unless meta.nil?
end
def load_alternatives_from_configuration
alts = Split.configuration.experiment_for(@name)[:alternatives]
raise ArgumentError, "Experiment configuration is missing :alternatives array" unless alts
if alts.is_a?(Hash)
alts.keys
else
alts.flatten
end
end
def load_alternatives_from_redis
alternatives = redis.lrange(@name, 0, -1)
alternatives.map do |alt|
alt = begin
JSON.parse(alt)
rescue
alt
end
Split::Alternative.new(alt, @name)
end
end
private
def redis
Split.redis
end
def redis_interface
RedisInterface.new
end
def persist_experiment_configuration
redis_interface.add_to_set(:experiments, name)
redis_interface.persist_list(name, @alternatives.map { |alt| { alt.name => alt.weight }.to_json })
goals_collection.save
if @metadata
redis.set(metadata_key, @metadata.to_json)
else
delete_metadata
end
end
def remove_experiment_configuration
@alternatives.each(&:delete)
goals_collection.delete
delete_metadata
redis.del(@name)
end
def experiment_configuration_has_changed?
existing_experiment = Experiment.find(@name)
existing_experiment.alternatives.map(&:to_s) != @alternatives.map(&:to_s) ||
existing_experiment.goals != @goals ||
existing_experiment.metadata != @metadata
end
def goals_collection
Split::GoalsCollection.new(@name, @goals)
end
def remove_experiment_cohorting
@cohorting_disabled = false
redis.hdel(experiment_config_key, :cohorting)
end
end
end
<MSG> Merge pull request #204 from swrobel/master
Sort experiments on Dashboard so "active" ones without a winner appear first
<DFF> @@ -41,6 +41,11 @@ module Split
Split.redis.smembers(:experiments).map {|e| find(e)}
end
+ # Return experiments without a winner (considered "active") first
+ def self.all_active_first
+ all.sort_by{|e| e.winner ? 1 : 0} # sort_by hack since true/false isn't sortable
+ end
+
def self.find(name)
if Split.redis.exists(name)
obj = self.new name
| 5 | Merge pull request #204 from swrobel/master | 0 | .rb | rb | mit | splitrb/split |
10070889 | <NME> README.md
<BEF> # [Split](https://libraries.io/rubygems/split)
[](http://badge.fury.io/rb/split)
[](https://codeclimate.com/github/splitrb/split)
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> 📈 The Rack Based A/B testing framework https://libraries.io/rubygems/split
Split is a rack based A/B testing framework designed to work with Rails, Sinatra or any other rack based app.
Split is heavily inspired by the [Abingo](https://github.com/ryanb/abingo) and [Vanity](https://github.com/assaf/vanity) Rails A/B testing plugins and [Resque](https://github.com/resque/resque) in its use of Redis.
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
## Install
### Requirements
Split v4.0+ is currently tested with Ruby >= 2.5 and Rails >= 5.2.
If your project requires compatibility with Ruby 2.4.x or older Rails versions. You can try v3.0 or v0.8.0(for Ruby 1.9.3)
Split uses Redis as a datastore.
Split only supports Redis 4.0 or greater.
If you're on OS X, Homebrew is the simplest way to install Redis:
```bash
brew install redis
redis-server /usr/local/etc/redis.conf
```
You now have a Redis daemon running on port `6379`.
### Setup
```bash
gem install split
```
#### Rails
Adding `gem 'split'` to your Gemfile will autoload it when rails starts up, as long as you've configured Redis it will 'just work'.
#### Sinatra
To configure Sinatra with Split you need to enable sessions and mix in the helper methods. Add the following lines at the top of your Sinatra app:
```ruby
require 'split'
class MySinatraApp < Sinatra::Base
enable :sessions
helpers Split::Helper
get '/' do
...
end
```
## Usage
To begin your A/B test use the `ab_test` method, naming your experiment with the first argument and then the different alternatives which you wish to test on as the other arguments.
`ab_test` returns one of the alternatives, if a user has already seen that test they will get the same alternative as before, which you can use to split your code on.
It can be used to render different templates, show different text or any other case based logic.
`ab_finished` is used to make a completion of an experiment, or conversion.
Example: View
```erb
<% ab_test(:login_button, "/images/button1.jpg", "/images/button2.jpg") do |button_file| %>
<%= image_tag(button_file, alt: "Login!") %>
<% end %>
```
Example: Controller
```ruby
def register_new_user
# See what level of free points maximizes users' decision to buy replacement points.
@starter_points = ab_test(:new_user_free_points, '100', '200', '300')
end
```
Example: Conversion tracking (in a controller!)
```ruby
def buy_new_points
# some business logic
ab_finished(:new_user_free_points)
end
```
Example: Conversion tracking (in a view)
```erb
Thanks for signing up, dude! <% ab_finished(:signup_page_redesign) %>
```
You can find more examples, tutorials and guides on the [wiki](https://github.com/splitrb/split/wiki).
## Statistical Validity
Split has two options for you to use to determine which alternative is the best.
The first option (default on the dashboard) uses a z test (n>30) for the difference between your control and alternative conversion rates to calculate statistical significance. This test will tell you whether an alternative is better or worse than your control, but it will not distinguish between which alternative is the best in an experiment with multiple alternatives. Split will only tell you if your experiment is 90%, 95%, or 99% significant, and this test only works if you have more than 30 participants and 5 conversions for each branch.
As per this [blog post](https://www.evanmiller.org/how-not-to-run-an-ab-test.html) on the pitfalls of A/B testing, it is highly recommended that you determine your requisite sample size for each branch before running the experiment. Otherwise, you'll have an increased rate of false positives (experiments which show a significant effect where really there is none).
[Here](https://www.evanmiller.org/ab-testing/sample-size.html) is a sample size calculator for your convenience.
The second option uses simulations from a beta distribution to determine the probability that the given alternative is the winner compared to all other alternatives. You can view these probabilities by clicking on the drop-down menu labeled "Confidence." This option should be used when the experiment has more than just 1 control and 1 alternative. It can also be used for a simple, 2-alternative A/B test.
Calculating the beta-distribution simulations for a large number of experiments can be slow, so the results are cached. You can specify how often they should be recalculated (the default is once per day).
```ruby
Split.configure do |config|
config.winning_alternative_recalculation_interval = 3600 # 1 hour
end
```
## Extras
### Weighted alternatives
Perhaps you only want to show an alternative to 10% of your visitors because it is very experimental or not yet fully load tested.
To do this you can pass a weight with each alternative in the following ways:
```ruby
ab_test(:homepage_design, {'Old' => 18}, {'New' => 2})
ab_test(:homepage_design, 'Old', {'New' => 1.0/9})
ab_test(:homepage_design, {'Old' => 9}, 'New')
```
This will only show the new alternative to visitors 1 in 10 times, the default weight for an alternative is 1.
### Overriding alternatives
For development and testing, you may wish to force your app to always return an alternative.
You can do this by passing it as a parameter in the url.
If you have an experiment called `button_color` with alternatives called `red` and `blue` used on your homepage, a url such as:
http://myawesomesite.com?ab_test[button_color]=red
will always have red buttons. This won't be stored in your session or count towards to results, unless you set the `store_override` configuration option.
In the event you want to disable all tests without having to know the individual experiment names, add a `SPLIT_DISABLE` query parameter.
http://myawesomesite.com?SPLIT_DISABLE=true
It is not required to send `SPLIT_DISABLE=false` to activate Split.
### Rspec Helper
To aid testing with RSpec, write `spec/support/split_helper.rb` and call `use_ab_test(alternatives_by_experiment)` in your specs as instructed below:
```ruby
# Create a file with these contents at 'spec/support/split_helper.rb'
# and ensure it is `require`d in your rails_helper.rb or spec_helper.rb
module SplitHelper
# Force a specific experiment alternative to always be returned:
# use_ab_test(signup_form: "single_page")
#
# Force alternatives for multiple experiments:
# use_ab_test(signup_form: "single_page", pricing: "show_enterprise_prices")
#
def use_ab_test(alternatives_by_experiment)
allow_any_instance_of(Split::Helper).to receive(:ab_test) do |_receiver, experiment, &block|
variant = alternatives_by_experiment.fetch(experiment) { |key| raise "Unknown experiment '#{key}'" }
block.call(variant) unless block.nil?
variant
end
end
end
# Make the `use_ab_test` method available to all specs:
RSpec.configure do |config|
config.include SplitHelper
end
```
Now you can call `use_ab_test(alternatives_by_experiment)` in your specs, for example:
```ruby
it "registers using experimental signup" do
use_ab_test experiment_name: "alternative_name"
post "/signups"
...
end
```
### Starting experiments manually
By default new A/B tests will be active right after deployment. In case you would like to start new test a while after
the deploy, you can do it by setting the `start_manually` configuration option to `true`.
After choosing this option tests won't be started right after deploy, but after pressing the `Start` button in Split admin dashboard. If a test is deleted from the Split dashboard, then it can only be started after pressing the `Start` button whenever being re-initialized.
### Reset after completion
When a user completes a test their session is reset so that they may start the test again in the future.
To stop this behaviour you can pass the following option to the `ab_finished` method:
```ruby
ab_finished(:experiment_name, reset: false)
```
The user will then always see the alternative they started with.
Any old unfinished experiment key will be deleted from the user's data storage if the experiment had been removed or is over and a winner had been chosen. This allows a user to enroll into any new experiment in cases when the `allow_multiple_experiments` config option is set to `false`.
### Reset experiments manually
By default Split automatically resets the experiment whenever it detects the configuration for an experiment has changed (e.g. you call `ab_test` with different alternatives). You can prevent this by setting the option `reset_manually` to `true`.
You may want to do this when you want to change something, like the variants' names, the metadata about an experiment, etc. without resetting everything.
### Multiple experiments at once
By default Split will avoid users participating in multiple experiments at once. This means you are less likely to skew results by adding in more variation to your tests.
To stop this behaviour and allow users to participate in multiple experiments at once set the `allow_multiple_experiments` config option to true like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = true
end
```
This will allow the user to participate in any number of experiments and belong to any alternative in each experiment. This has the possible downside of a variation in one experiment influencing the outcome of another.
To address this, setting the `allow_multiple_experiments` config option to 'control' like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = 'control'
end
```
For this to work, each and every experiment you define must have an alternative named 'control'. This will allow the user to participate in multiple experiments as long as the user belongs to the alternative 'control' in each experiment. As soon as the user belongs to an alternative named something other than 'control' the user may not participate in any more experiments. Calling ab_test(<other experiments>) will always return the first alternative without adding the user to that experiment.
### Experiment Persistence
Split comes with three built-in persistence adapters for storing users and the alternatives they've been given for each experiment.
By default Split will store the tests for each user in the session.
You can optionally configure Split to use a cookie, Redis, or any custom adapter of your choosing.
#### Cookies
```ruby
Split.configure do |config|
config.persistence = :cookie
end
```
When using the cookie persistence, Split stores data into an anonymous tracking cookie named 'split', which expires in 1 year. To change that, set the `persistence_cookie_length` in the configuration (unit of time in seconds).
```ruby
Split.configure do |config|
config.persistence = :cookie
config.persistence_cookie_length = 2592000 # 30 days
end
```
The data stored consists of the experiment name and the variants the user is in. Example: { "experiment_name" => "variant_a" }
__Note:__ Using cookies depends on `ActionDispatch::Cookies` or any identical API
#### Redis
Using Redis will allow ab_users to persist across sessions or machines.
```ruby
Split.configure do |config|
config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: -> (context) { context.current_user_id })
# Equivalent
# config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: :current_user_id)
end
```
Options:
* `lookup_by`: method to invoke per request for uniquely identifying ab_users (mandatory configuration)
* `namespace`: separate namespace to store these persisted values (default "persistence")
* `expire_seconds`: sets TTL for user key. (if a user is in multiple experiments most recent update will reset TTL for all their assignments)
#### Dual Adapter
The Dual Adapter allows the use of different persistence adapters for logged-in and logged-out users. A common use case is to use Redis for logged-in users and Cookies for logged-out users.
```ruby
cookie_adapter = Split::Persistence::CookieAdapter
redis_adapter = Split::Persistence::RedisAdapter.with_config(
lookup_by: -> (context) { context.send(:current_user).try(:id) },
expire_seconds: 2592000)
Split.configure do |config|
config.persistence = Split::Persistence::DualAdapter.with_config(
logged_in: -> (context) { !context.send(:current_user).try(:id).nil? },
logged_in_adapter: redis_adapter,
logged_out_adapter: cookie_adapter)
config.persistence_cookie_length = 2592000 # 30 days
end
```
#### Custom Adapter
Your custom adapter needs to implement the same API as existing adapters.
See `Split::Persistence::CookieAdapter` or `Split::Persistence::SessionAdapter` for a starting point.
```ruby
Split.configure do |config|
config.persistence = YourCustomAdapterClass
end
```
### Trial Event Hooks
You can define methods that will be called at the same time as experiment
alternative participation and goal completion.
For example:
``` ruby
Split.configure do |config|
config.on_trial = :log_trial # run on every trial
config.on_trial_choose = :log_trial_choose # run on trials with new users only
config.on_trial_complete = :log_trial_complete
end
```
Set these attributes to a method name available in the same context as the
`ab_test` method. These methods should accept one argument, a `Trial` instance.
``` ruby
def log_trial(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_choose(trial)
logger.info "[new user] experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_complete(trial)
logger.info "experiment=%s alternative=%s user=%s complete=true" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
#### Views
If you are running `ab_test` from a view, you must define your event
hook callback as a
[helper_method](https://apidock.com/rails/AbstractController/Helpers/ClassMethods/helper_method)
in the controller:
``` ruby
helper_method :log_trial_choose
def log_trial_choose(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
### Experiment Hooks
You can assign a proc that will be called when an experiment is reset or deleted. You can use these hooks to call methods within your application to keep data related to experiments in sync with Split.
For example:
``` ruby
Split.configure do |config|
# after experiment reset or deleted
config.on_experiment_reset = -> (example) { # Do something on reset }
config.on_experiment_delete = -> (experiment) { # Do something else on delete }
# before experiment reset or deleted
config.on_before_experiment_reset = -> (example) { # Do something on reset }
config.on_before_experiment_delete = -> (experiment) { # Do something else on delete }
# after experiment winner had been set
config.on_experiment_winner_choose = -> (experiment) { # Do something on winner choose }
end
```
## Web Interface
Split comes with a Sinatra-based front end to get an overview of how your experiments are doing.
If you are running Rails 2: You can mount this inside your app using Rack::URLMap in your `config.ru`
```ruby
require 'split/dashboard'
run Rack::URLMap.new \
"/" => Your::App.new,
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
```
Then adding this to config/routes.rb
```ruby
mount Split::Dashboard, at: 'split'
```
You may want to password protect that page, you can do so with `Rack::Auth::Basic` (in your split initializer file)
```ruby
# Rails apps or apps that already depend on activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
# Apps without activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
```
You can even use Devise or any other Warden-based authentication method to authorize users. Just replace `mount Split::Dashboard, :at => 'split'` in `config/routes.rb` with the following:
```ruby
match "/split" => Split::Dashboard, anchor: false, via: [:get, :post, :delete], constraints: -> (request) do
request.env['warden'].authenticated? # are we authenticated?
request.env['warden'].authenticate! # authenticate if not already
# or even check any other condition such as request.env['warden'].user.is_admin?
end
```
More information on this [here](https://steve.dynedge.co.uk/2011/12/09/controlling-access-to-routes-and-rack-apps-in-rails-3-with-devise-and-warden/)
### Screenshot
## Configuration
You can override the default configuration options of Split like so:
```ruby
Split.configure do |config|
config.db_failover = true # handle Redis errors gracefully
config.db_failover_on_db_error = -> (error) { Rails.logger.error(error.message) }
config.allow_multiple_experiments = true
config.enabled = true
config.persistence = Split::Persistence::SessionAdapter
#config.start_manually = false ## new test will have to be started manually from the admin panel. default false
#config.reset_manually = false ## if true, it never resets the experiment data, even if the configuration changes
config.include_rails_helper = true
config.redis = "redis://custom.redis.url:6380"
end
```
Split looks for the Redis host in the environment variable `REDIS_URL` then
defaults to `redis://localhost:6379` if not specified by configure block.
On platforms like Heroku, Split will use the value of `REDIS_PROVIDER` to
determine which env variable key to use when retrieving the host config. This
defaults to `REDIS_URL`.
### Filtering
In most scenarios you don't want to have AB-Testing enabled for web spiders, robots or special groups of users.
Split provides functionality to filter this based on a predefined, extensible list of bots, IP-lists or custom exclude logic.
```ruby
Split.configure do |config|
# bot config
config.robot_regex = /my_custom_robot_regex/ # or
config.bots['newbot'] = "Description for bot with 'newbot' user agent, which will be added to config.robot_regex for exclusion"
# IP config
config.ignore_ip_addresses << '81.19.48.130' # or regex: /81\.19\.48\.[0-9]+/
# or provide your own filter functionality, the default is proc{ |request| is_robot? || is_ignored_ip_address? || is_preview? }
config.ignore_filter = -> (request) { CustomExcludeLogic.excludes?(request) }
end
```
### Experiment configuration
Instead of providing the experiment options inline, you can store them
in a hash. This hash can control your experiment's alternatives, weights,
algorithm and if the experiment resets once finished:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
resettable: false
},
:my_second_experiment => {
algorithm: 'Split::Algorithms::Whiplash',
alternatives: [
{ name: "a", percent: 67 },
{ name: "b", percent: 33 }
]
}
}
end
```
You can also store your experiments in a YAML file:
```ruby
Split.configure do |config|
config.experiments = YAML.load_file "config/experiments.yml"
end
```
You can then define the YAML file like:
```yaml
my_first_experiment:
alternatives:
- a
- b
my_second_experiment:
alternatives:
- name: a
percent: 67
- name: b
percent: 33
resettable: false
```
This simplifies the calls from your code:
```ruby
ab_test(:my_first_experiment)
```
and:
```ruby
ab_finished(:my_first_experiment)
```
You can also add meta data for each experiment, which is very useful when you need more than an alternative name to change behaviour:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metadata: {
"a" => {"text" => "Have a fantastic day"},
"b" => {"text" => "Don't get hit by a bus"}
}
}
}
end
```
```yaml
my_first_experiment:
alternatives:
- a
- b
metadata:
a:
text: "Have a fantastic day"
b:
text: "Don't get hit by a bus"
```
This allows for some advanced experiment configuration using methods like:
```ruby
trial.alternative.name # => "a"
trial.metadata['text'] # => "Have a fantastic day"
```
or in views:
```erb
<% ab_test("my_first_experiment") do |alternative, meta| %>
<%= alternative %>
<small><%= meta['text'] %></small>
<% end %>
```
The keys used in meta data should be Strings
```ruby
# create a new experiment
experiment = Split::Experiment.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metric: :my_metric
}
}
end
```
Your code may then track a completion using the metric instead of
the experiment name:
```ruby
ab_finished(:my_metric)
```
You can also create a new metric by instantiating and saving a new Metric object.
```ruby
Split::Metric.new(:my_metric)
Split::Metric.save
```
#### Goals
You might wish to allow an experiment to have multiple, distinguishable goals.
The API to define goals for an experiment is this:
```ruby
ab_test({link_color: ["purchase", "refund"]}, "red", "blue")
```
or you can define them in a configuration file:
```ruby
Split.configure do |config|
config.experiments = {
link_color: {
alternatives: ["red", "blue"],
goals: ["purchase", "refund"]
}
}
end
```
To complete a goal conversion, you do it like:
```ruby
ab_finished(link_color: "purchase")
```
Note that if you pass additional options, that should be a separate hash:
```ruby
ab_finished({ link_color: "purchase" }, reset: false)
```
**NOTE:** This does not mean that a single experiment can complete more than one goal.
Once you finish one of the goals, the test is considered to be completed, and finishing the other goal will no longer register. (Assuming the test runs with `reset: false`.)
**Good Example**: Test if listing Plan A first result in more conversions to Plan A (goal: "plana_conversion") or Plan B (goal: "planb_conversion").
**Bad Example**: Test if button color increases conversion rate through multiple steps of a funnel. THIS WILL NOT WORK.
**Bad Example**: Test both how button color affects signup *and* how it affects login, at the same time. THIS WILL NOT WORK.
#### Combined Experiments
If you want to test how button color affects signup *and* how it affects login at the same time, use combined experiments.
Configure like so:
```ruby
Split.configuration.experiments = {
:button_color_experiment => {
:alternatives => ["blue", "green"],
:combined_experiments => ["button_color_on_signup", "button_color_on_login"]
}
}
```
Starting the combined test starts all combined experiments
```ruby
ab_combined_test(:button_color_experiment)
```
Finish each combined test as normal
```ruby
ab_finished(:button_color_on_login)
ab_finished(:button_color_on_signup)
```
**Additional Configuration**:
* Be sure to enable `allow_multiple_experiments`
* In Sinatra include the CombinedExperimentsHelper
```
helpers Split::CombinedExperimentsHelper
```
### DB failover solution
Due to the fact that Redis has no automatic failover mechanism, it's
possible to switch on the `db_failover` config option, so that `ab_test`
and `ab_finished` will not crash in case of a db failure. `ab_test` always
delivers alternative A (the first one) in that case.
It's also possible to set a `db_failover_on_db_error` callback (proc)
for example to log these errors via Rails.logger.
### Redis
You may want to change the Redis host and port Split connects to, or
set various other options at startup.
Split has a `redis` setter which can be given a string or a Redis
object. This means if you're already using Redis in your app, Split
can re-use the existing connection.
String: `Split.redis = 'redis://localhost:6379'`
Redis: `Split.redis = $redis`
For our rails app we have a `config/initializers/split.rb` file where
we load `config/split.yml` by hand and set the Redis information
appropriately.
Here's our `config/split.yml`:
```yml
development: redis://localhost:6379
test: redis://localhost:6379
staging: redis://redis1.example.com:6379
fi: redis://localhost:6379
production: redis://redis1.example.com:6379
```
And our initializer:
```ruby
split_config = YAML.load_file(Rails.root.join('config', 'split.yml'))
Split.redis = split_config[Rails.env]
```
### Redis Caching (v4.0+)
In some high-volume usage scenarios, Redis load can be incurred by repeated
fetches for fairly static data. Enabling caching will reduce this load.
```ruby
Split.configuration.cache = true
````
This currently caches:
- `Split::ExperimentCatalog.find`
- `Split::Experiment.start_time`
- `Split::Experiment.winner`
## Namespaces
If you're running multiple, separate instances of Split you may want
to namespace the keyspaces so they do not overlap. This is not unlike
the approach taken by many memcached clients.
This feature can be provided by the [redis-namespace](https://github.com/defunkt/redis-namespace)
library. To configure Split to use `Redis::Namespace`, do the following:
1. Add `redis-namespace` to your Gemfile:
```ruby
gem 'redis-namespace'
```
2. Configure `Split.redis` to use a `Redis::Namespace` instance (possible in an
initializer):
```ruby
redis = Redis.new(url: ENV['REDIS_URL']) # or whatever config you want
Split.redis = Redis::Namespace.new(:your_namespace, redis: redis)
```
## Outside of a Web Session
Split provides the Helper module to facilitate running experiments inside web sessions.
Alternatively, you can access the underlying Metric, Trial, Experiment and Alternative objects to
conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
trial.choose!
# get the result, returns either red or blue
trial.alternative.name
# if the goal has been achieved, increment the successful completions for this alternative.
if goal_achieved?
trial.complete!
end
```
## Algorithms
By default, Split ships with `Split::Algorithms::WeightedSample` that randomly selects from possible alternatives for a traditional a/b test.
It is possible to specify static weights to favor certain alternatives.
`Split::Algorithms::Whiplash` is an implementation of a [multi-armed bandit algorithm](http://stevehanov.ca/blog/index.php?id=132).
This algorithm will automatically weight the alternatives based on their relative performance,
choosing the better-performing ones more often as trials are completed.
`Split::Algorithms::BlockRandomization` is an algorithm that ensures equal
participation across all alternatives. This algorithm will choose the alternative
with the fewest participants. In the event of multiple minimum participant alternatives
(i.e. starting a new "Block") the algorithm will choose a random alternative from
those minimum participant alternatives.
Users may also write their own algorithms. The default algorithm may be specified globally in the configuration file, or on a per experiment basis using the experiments hash of the configuration file.
To change the algorithm globally for all experiments, use the following in your initializer:
```ruby
Split.configure do |config|
config.algorithm = Split::Algorithms::Whiplash
end
```
## Extensions
- [Split::Export](https://github.com/splitrb/split-export) - Easily export A/B test data out of Split.
- [Split::Analytics](https://github.com/splitrb/split-analytics) - Push test data to Google Analytics.
- [Split::Mongoid](https://github.com/MongoHQ/split-mongoid) - Store experiment data in mongoid (still uses redis).
- [Split::Cacheable](https://github.com/harrystech/split_cacheable) - Automatically create cache buckets per test.
- [Split::Counters](https://github.com/bernardkroes/split-counters) - Add counters per experiment and alternative.
- [Split::Cli](https://github.com/craigmcnamara/split-cli) - A CLI to trigger Split A/B tests.
## Screencast
Ryan bates has produced an excellent 10 minute screencast about split on the Railscasts site: [A/B Testing with Split](http://railscasts.com/episodes/331-a-b-testing-with-split)
## Blogposts
* [Recipe: A/B testing with KISSMetrics and the split gem](https://robots.thoughtbot.com/post/9595887299/recipe-a-b-testing-with-kissmetrics-and-the-split-gem)
* [Rails A/B testing with Split on Heroku](http://blog.nathanhumbert.com/2012/02/rails-ab-testing-with-split-on-heroku.html)
## Backers
Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/split#backer)]
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## Sponsors
Become a sponsor and get your logo on our README on Github with a link to your site. [[Become a sponsor](https://opencollective.com/split#sponsor)]
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## Contribute
Please do! Over 70 different people have contributed to the project, you can see them all here: https://github.com/splitrb/split/graphs/contributors.
### Development
The source code is hosted at [GitHub](https://github.com/splitrb/split).
Report issues and feature requests on [GitHub Issues](https://github.com/splitrb/split/issues).
You can find a discussion form on [Google Groups](https://groups.google.com/d/forum/split-ruby).
### Tests
Run the tests like this:
# Start a Redis server in another tab.
redis-server
bundle
rake spec
### A Note on Patches and Pull Requests
* Fork the project.
* Make your feature addition or bug fix.
* Add tests for it. This is important so I don't break it in a
future version unintentionally.
* Add documentation if necessary.
* Commit. Do not mess with the rakefile, version, or history.
(If you want to have your own version, that is fine. But bump the version in a commit by itself, which I can ignore when I pull.)
* Send a pull request. Bonus points for topic branches.
### Code of Conduct
Please note that this project is released with a [Contributor Code of Conduct](CODE_OF_CONDUCT.md). By participating in this project you agree to abide by its terms.
## Copyright
[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
<MSG> Merge pull request #305 from patbl/master
Update documentation regarding Split::Experiment.
<DFF> @@ -614,7 +614,7 @@ conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
-experiment = Split::Experiment.find_or_create('color', 'red', 'blue')
+experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
| 1 | Merge pull request #305 from patbl/master | 1 | .md | md | mit | splitrb/split |
10070890 | <NME> README.md
<BEF> # [Split](https://libraries.io/rubygems/split)
[](http://badge.fury.io/rb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://codeclimate.com/github/splitrb/split/coverage)
[](https://github.com/RichardLitt/standard-readme)
[](https://www.codetriage.com/splitrb/split)
> 📈 The Rack Based A/B testing framework https://libraries.io/rubygems/split
Split is a rack based A/B testing framework designed to work with Rails, Sinatra or any other rack based app.
Split is heavily inspired by the [Abingo](https://github.com/ryanb/abingo) and [Vanity](https://github.com/assaf/vanity) Rails A/B testing plugins and [Resque](https://github.com/resque/resque) in its use of Redis.
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
## Install
### Requirements
Split v4.0+ is currently tested with Ruby >= 2.5 and Rails >= 5.2.
If your project requires compatibility with Ruby 2.4.x or older Rails versions. You can try v3.0 or v0.8.0(for Ruby 1.9.3)
Split uses Redis as a datastore.
Split only supports Redis 4.0 or greater.
If you're on OS X, Homebrew is the simplest way to install Redis:
```bash
brew install redis
redis-server /usr/local/etc/redis.conf
```
You now have a Redis daemon running on port `6379`.
### Setup
```bash
gem install split
```
#### Rails
Adding `gem 'split'` to your Gemfile will autoload it when rails starts up, as long as you've configured Redis it will 'just work'.
#### Sinatra
To configure Sinatra with Split you need to enable sessions and mix in the helper methods. Add the following lines at the top of your Sinatra app:
```ruby
require 'split'
class MySinatraApp < Sinatra::Base
enable :sessions
helpers Split::Helper
get '/' do
...
end
```
## Usage
To begin your A/B test use the `ab_test` method, naming your experiment with the first argument and then the different alternatives which you wish to test on as the other arguments.
`ab_test` returns one of the alternatives, if a user has already seen that test they will get the same alternative as before, which you can use to split your code on.
It can be used to render different templates, show different text or any other case based logic.
`ab_finished` is used to make a completion of an experiment, or conversion.
Example: View
```erb
<% ab_test(:login_button, "/images/button1.jpg", "/images/button2.jpg") do |button_file| %>
<%= image_tag(button_file, alt: "Login!") %>
<% end %>
```
Example: Controller
```ruby
def register_new_user
# See what level of free points maximizes users' decision to buy replacement points.
@starter_points = ab_test(:new_user_free_points, '100', '200', '300')
end
```
Example: Conversion tracking (in a controller!)
```ruby
def buy_new_points
# some business logic
ab_finished(:new_user_free_points)
end
```
Example: Conversion tracking (in a view)
```erb
Thanks for signing up, dude! <% ab_finished(:signup_page_redesign) %>
```
You can find more examples, tutorials and guides on the [wiki](https://github.com/splitrb/split/wiki).
## Statistical Validity
Split has two options for you to use to determine which alternative is the best.
The first option (default on the dashboard) uses a z test (n>30) for the difference between your control and alternative conversion rates to calculate statistical significance. This test will tell you whether an alternative is better or worse than your control, but it will not distinguish between which alternative is the best in an experiment with multiple alternatives. Split will only tell you if your experiment is 90%, 95%, or 99% significant, and this test only works if you have more than 30 participants and 5 conversions for each branch.
As per this [blog post](https://www.evanmiller.org/how-not-to-run-an-ab-test.html) on the pitfalls of A/B testing, it is highly recommended that you determine your requisite sample size for each branch before running the experiment. Otherwise, you'll have an increased rate of false positives (experiments which show a significant effect where really there is none).
[Here](https://www.evanmiller.org/ab-testing/sample-size.html) is a sample size calculator for your convenience.
The second option uses simulations from a beta distribution to determine the probability that the given alternative is the winner compared to all other alternatives. You can view these probabilities by clicking on the drop-down menu labeled "Confidence." This option should be used when the experiment has more than just 1 control and 1 alternative. It can also be used for a simple, 2-alternative A/B test.
Calculating the beta-distribution simulations for a large number of experiments can be slow, so the results are cached. You can specify how often they should be recalculated (the default is once per day).
```ruby
Split.configure do |config|
config.winning_alternative_recalculation_interval = 3600 # 1 hour
end
```
## Extras
### Weighted alternatives
Perhaps you only want to show an alternative to 10% of your visitors because it is very experimental or not yet fully load tested.
To do this you can pass a weight with each alternative in the following ways:
```ruby
ab_test(:homepage_design, {'Old' => 18}, {'New' => 2})
ab_test(:homepage_design, 'Old', {'New' => 1.0/9})
ab_test(:homepage_design, {'Old' => 9}, 'New')
```
This will only show the new alternative to visitors 1 in 10 times, the default weight for an alternative is 1.
### Overriding alternatives
For development and testing, you may wish to force your app to always return an alternative.
You can do this by passing it as a parameter in the url.
If you have an experiment called `button_color` with alternatives called `red` and `blue` used on your homepage, a url such as:
http://myawesomesite.com?ab_test[button_color]=red
will always have red buttons. This won't be stored in your session or count towards to results, unless you set the `store_override` configuration option.
In the event you want to disable all tests without having to know the individual experiment names, add a `SPLIT_DISABLE` query parameter.
http://myawesomesite.com?SPLIT_DISABLE=true
It is not required to send `SPLIT_DISABLE=false` to activate Split.
### Rspec Helper
To aid testing with RSpec, write `spec/support/split_helper.rb` and call `use_ab_test(alternatives_by_experiment)` in your specs as instructed below:
```ruby
# Create a file with these contents at 'spec/support/split_helper.rb'
# and ensure it is `require`d in your rails_helper.rb or spec_helper.rb
module SplitHelper
# Force a specific experiment alternative to always be returned:
# use_ab_test(signup_form: "single_page")
#
# Force alternatives for multiple experiments:
# use_ab_test(signup_form: "single_page", pricing: "show_enterprise_prices")
#
def use_ab_test(alternatives_by_experiment)
allow_any_instance_of(Split::Helper).to receive(:ab_test) do |_receiver, experiment, &block|
variant = alternatives_by_experiment.fetch(experiment) { |key| raise "Unknown experiment '#{key}'" }
block.call(variant) unless block.nil?
variant
end
end
end
# Make the `use_ab_test` method available to all specs:
RSpec.configure do |config|
config.include SplitHelper
end
```
Now you can call `use_ab_test(alternatives_by_experiment)` in your specs, for example:
```ruby
it "registers using experimental signup" do
use_ab_test experiment_name: "alternative_name"
post "/signups"
...
end
```
### Starting experiments manually
By default new A/B tests will be active right after deployment. In case you would like to start new test a while after
the deploy, you can do it by setting the `start_manually` configuration option to `true`.
After choosing this option tests won't be started right after deploy, but after pressing the `Start` button in Split admin dashboard. If a test is deleted from the Split dashboard, then it can only be started after pressing the `Start` button whenever being re-initialized.
### Reset after completion
When a user completes a test their session is reset so that they may start the test again in the future.
To stop this behaviour you can pass the following option to the `ab_finished` method:
```ruby
ab_finished(:experiment_name, reset: false)
```
The user will then always see the alternative they started with.
Any old unfinished experiment key will be deleted from the user's data storage if the experiment had been removed or is over and a winner had been chosen. This allows a user to enroll into any new experiment in cases when the `allow_multiple_experiments` config option is set to `false`.
### Reset experiments manually
By default Split automatically resets the experiment whenever it detects the configuration for an experiment has changed (e.g. you call `ab_test` with different alternatives). You can prevent this by setting the option `reset_manually` to `true`.
You may want to do this when you want to change something, like the variants' names, the metadata about an experiment, etc. without resetting everything.
### Multiple experiments at once
By default Split will avoid users participating in multiple experiments at once. This means you are less likely to skew results by adding in more variation to your tests.
To stop this behaviour and allow users to participate in multiple experiments at once set the `allow_multiple_experiments` config option to true like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = true
end
```
This will allow the user to participate in any number of experiments and belong to any alternative in each experiment. This has the possible downside of a variation in one experiment influencing the outcome of another.
To address this, setting the `allow_multiple_experiments` config option to 'control' like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = 'control'
end
```
For this to work, each and every experiment you define must have an alternative named 'control'. This will allow the user to participate in multiple experiments as long as the user belongs to the alternative 'control' in each experiment. As soon as the user belongs to an alternative named something other than 'control' the user may not participate in any more experiments. Calling ab_test(<other experiments>) will always return the first alternative without adding the user to that experiment.
### Experiment Persistence
Split comes with three built-in persistence adapters for storing users and the alternatives they've been given for each experiment.
By default Split will store the tests for each user in the session.
You can optionally configure Split to use a cookie, Redis, or any custom adapter of your choosing.
#### Cookies
```ruby
Split.configure do |config|
config.persistence = :cookie
end
```
When using the cookie persistence, Split stores data into an anonymous tracking cookie named 'split', which expires in 1 year. To change that, set the `persistence_cookie_length` in the configuration (unit of time in seconds).
```ruby
Split.configure do |config|
config.persistence = :cookie
config.persistence_cookie_length = 2592000 # 30 days
end
```
The data stored consists of the experiment name and the variants the user is in. Example: { "experiment_name" => "variant_a" }
__Note:__ Using cookies depends on `ActionDispatch::Cookies` or any identical API
#### Redis
Using Redis will allow ab_users to persist across sessions or machines.
```ruby
Split.configure do |config|
config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: -> (context) { context.current_user_id })
# Equivalent
# config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: :current_user_id)
end
```
Options:
* `lookup_by`: method to invoke per request for uniquely identifying ab_users (mandatory configuration)
* `namespace`: separate namespace to store these persisted values (default "persistence")
* `expire_seconds`: sets TTL for user key. (if a user is in multiple experiments most recent update will reset TTL for all their assignments)
#### Dual Adapter
The Dual Adapter allows the use of different persistence adapters for logged-in and logged-out users. A common use case is to use Redis for logged-in users and Cookies for logged-out users.
```ruby
cookie_adapter = Split::Persistence::CookieAdapter
redis_adapter = Split::Persistence::RedisAdapter.with_config(
lookup_by: -> (context) { context.send(:current_user).try(:id) },
expire_seconds: 2592000)
Split.configure do |config|
config.persistence = Split::Persistence::DualAdapter.with_config(
logged_in: -> (context) { !context.send(:current_user).try(:id).nil? },
logged_in_adapter: redis_adapter,
logged_out_adapter: cookie_adapter)
config.persistence_cookie_length = 2592000 # 30 days
end
```
#### Custom Adapter
Your custom adapter needs to implement the same API as existing adapters.
See `Split::Persistence::CookieAdapter` or `Split::Persistence::SessionAdapter` for a starting point.
```ruby
Split.configure do |config|
config.persistence = YourCustomAdapterClass
end
```
### Trial Event Hooks
You can define methods that will be called at the same time as experiment
alternative participation and goal completion.
For example:
``` ruby
Split.configure do |config|
config.on_trial = :log_trial # run on every trial
config.on_trial_choose = :log_trial_choose # run on trials with new users only
config.on_trial_complete = :log_trial_complete
end
```
Set these attributes to a method name available in the same context as the
`ab_test` method. These methods should accept one argument, a `Trial` instance.
``` ruby
def log_trial(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_choose(trial)
logger.info "[new user] experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_complete(trial)
logger.info "experiment=%s alternative=%s user=%s complete=true" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
#### Views
If you are running `ab_test` from a view, you must define your event
hook callback as a
[helper_method](https://apidock.com/rails/AbstractController/Helpers/ClassMethods/helper_method)
in the controller:
``` ruby
helper_method :log_trial_choose
def log_trial_choose(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
### Experiment Hooks
You can assign a proc that will be called when an experiment is reset or deleted. You can use these hooks to call methods within your application to keep data related to experiments in sync with Split.
For example:
``` ruby
Split.configure do |config|
# after experiment reset or deleted
config.on_experiment_reset = -> (example) { # Do something on reset }
config.on_experiment_delete = -> (experiment) { # Do something else on delete }
# before experiment reset or deleted
config.on_before_experiment_reset = -> (example) { # Do something on reset }
config.on_before_experiment_delete = -> (experiment) { # Do something else on delete }
# after experiment winner had been set
config.on_experiment_winner_choose = -> (experiment) { # Do something on winner choose }
end
```
## Web Interface
Split comes with a Sinatra-based front end to get an overview of how your experiments are doing.
If you are running Rails 2: You can mount this inside your app using Rack::URLMap in your `config.ru`
```ruby
require 'split/dashboard'
run Rack::URLMap.new \
"/" => Your::App.new,
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
```
Then adding this to config/routes.rb
```ruby
mount Split::Dashboard, at: 'split'
```
You may want to password protect that page, you can do so with `Rack::Auth::Basic` (in your split initializer file)
```ruby
# Rails apps or apps that already depend on activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
# Apps without activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
```
You can even use Devise or any other Warden-based authentication method to authorize users. Just replace `mount Split::Dashboard, :at => 'split'` in `config/routes.rb` with the following:
```ruby
match "/split" => Split::Dashboard, anchor: false, via: [:get, :post, :delete], constraints: -> (request) do
request.env['warden'].authenticated? # are we authenticated?
request.env['warden'].authenticate! # authenticate if not already
# or even check any other condition such as request.env['warden'].user.is_admin?
end
```
More information on this [here](https://steve.dynedge.co.uk/2011/12/09/controlling-access-to-routes-and-rack-apps-in-rails-3-with-devise-and-warden/)
### Screenshot
## Configuration
You can override the default configuration options of Split like so:
```ruby
Split.configure do |config|
config.db_failover = true # handle Redis errors gracefully
config.db_failover_on_db_error = -> (error) { Rails.logger.error(error.message) }
config.allow_multiple_experiments = true
config.enabled = true
config.persistence = Split::Persistence::SessionAdapter
#config.start_manually = false ## new test will have to be started manually from the admin panel. default false
#config.reset_manually = false ## if true, it never resets the experiment data, even if the configuration changes
config.include_rails_helper = true
config.redis = "redis://custom.redis.url:6380"
end
```
Split looks for the Redis host in the environment variable `REDIS_URL` then
defaults to `redis://localhost:6379` if not specified by configure block.
On platforms like Heroku, Split will use the value of `REDIS_PROVIDER` to
determine which env variable key to use when retrieving the host config. This
defaults to `REDIS_URL`.
### Filtering
In most scenarios you don't want to have AB-Testing enabled for web spiders, robots or special groups of users.
Split provides functionality to filter this based on a predefined, extensible list of bots, IP-lists or custom exclude logic.
```ruby
Split.configure do |config|
# bot config
config.robot_regex = /my_custom_robot_regex/ # or
config.bots['newbot'] = "Description for bot with 'newbot' user agent, which will be added to config.robot_regex for exclusion"
# IP config
config.ignore_ip_addresses << '81.19.48.130' # or regex: /81\.19\.48\.[0-9]+/
# or provide your own filter functionality, the default is proc{ |request| is_robot? || is_ignored_ip_address? || is_preview? }
config.ignore_filter = -> (request) { CustomExcludeLogic.excludes?(request) }
end
```
### Experiment configuration
Instead of providing the experiment options inline, you can store them
in a hash. This hash can control your experiment's alternatives, weights,
algorithm and if the experiment resets once finished:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
resettable: false
},
:my_second_experiment => {
algorithm: 'Split::Algorithms::Whiplash',
alternatives: [
{ name: "a", percent: 67 },
{ name: "b", percent: 33 }
]
}
}
end
```
You can also store your experiments in a YAML file:
```ruby
Split.configure do |config|
config.experiments = YAML.load_file "config/experiments.yml"
end
```
You can then define the YAML file like:
```yaml
my_first_experiment:
alternatives:
- a
- b
my_second_experiment:
alternatives:
- name: a
percent: 67
- name: b
percent: 33
resettable: false
```
This simplifies the calls from your code:
```ruby
ab_test(:my_first_experiment)
```
and:
```ruby
ab_finished(:my_first_experiment)
```
You can also add meta data for each experiment, which is very useful when you need more than an alternative name to change behaviour:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metadata: {
"a" => {"text" => "Have a fantastic day"},
"b" => {"text" => "Don't get hit by a bus"}
}
}
}
end
```
```yaml
my_first_experiment:
alternatives:
- a
- b
metadata:
a:
text: "Have a fantastic day"
b:
text: "Don't get hit by a bus"
```
This allows for some advanced experiment configuration using methods like:
```ruby
trial.alternative.name # => "a"
trial.metadata['text'] # => "Have a fantastic day"
```
or in views:
```erb
<% ab_test("my_first_experiment") do |alternative, meta| %>
<%= alternative %>
<small><%= meta['text'] %></small>
<% end %>
```
The keys used in meta data should be Strings
```ruby
# create a new experiment
experiment = Split::Experiment.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metric: :my_metric
}
}
end
```
Your code may then track a completion using the metric instead of
the experiment name:
```ruby
ab_finished(:my_metric)
```
You can also create a new metric by instantiating and saving a new Metric object.
```ruby
Split::Metric.new(:my_metric)
Split::Metric.save
```
#### Goals
You might wish to allow an experiment to have multiple, distinguishable goals.
The API to define goals for an experiment is this:
```ruby
ab_test({link_color: ["purchase", "refund"]}, "red", "blue")
```
or you can define them in a configuration file:
```ruby
Split.configure do |config|
config.experiments = {
link_color: {
alternatives: ["red", "blue"],
goals: ["purchase", "refund"]
}
}
end
```
To complete a goal conversion, you do it like:
```ruby
ab_finished(link_color: "purchase")
```
Note that if you pass additional options, that should be a separate hash:
```ruby
ab_finished({ link_color: "purchase" }, reset: false)
```
**NOTE:** This does not mean that a single experiment can complete more than one goal.
Once you finish one of the goals, the test is considered to be completed, and finishing the other goal will no longer register. (Assuming the test runs with `reset: false`.)
**Good Example**: Test if listing Plan A first result in more conversions to Plan A (goal: "plana_conversion") or Plan B (goal: "planb_conversion").
**Bad Example**: Test if button color increases conversion rate through multiple steps of a funnel. THIS WILL NOT WORK.
**Bad Example**: Test both how button color affects signup *and* how it affects login, at the same time. THIS WILL NOT WORK.
#### Combined Experiments
If you want to test how button color affects signup *and* how it affects login at the same time, use combined experiments.
Configure like so:
```ruby
Split.configuration.experiments = {
:button_color_experiment => {
:alternatives => ["blue", "green"],
:combined_experiments => ["button_color_on_signup", "button_color_on_login"]
}
}
```
Starting the combined test starts all combined experiments
```ruby
ab_combined_test(:button_color_experiment)
```
Finish each combined test as normal
```ruby
ab_finished(:button_color_on_login)
ab_finished(:button_color_on_signup)
```
**Additional Configuration**:
* Be sure to enable `allow_multiple_experiments`
* In Sinatra include the CombinedExperimentsHelper
```
helpers Split::CombinedExperimentsHelper
```
### DB failover solution
Due to the fact that Redis has no automatic failover mechanism, it's
possible to switch on the `db_failover` config option, so that `ab_test`
and `ab_finished` will not crash in case of a db failure. `ab_test` always
delivers alternative A (the first one) in that case.
It's also possible to set a `db_failover_on_db_error` callback (proc)
for example to log these errors via Rails.logger.
### Redis
You may want to change the Redis host and port Split connects to, or
set various other options at startup.
Split has a `redis` setter which can be given a string or a Redis
object. This means if you're already using Redis in your app, Split
can re-use the existing connection.
String: `Split.redis = 'redis://localhost:6379'`
Redis: `Split.redis = $redis`
For our rails app we have a `config/initializers/split.rb` file where
we load `config/split.yml` by hand and set the Redis information
appropriately.
Here's our `config/split.yml`:
```yml
development: redis://localhost:6379
test: redis://localhost:6379
staging: redis://redis1.example.com:6379
fi: redis://localhost:6379
production: redis://redis1.example.com:6379
```
And our initializer:
```ruby
split_config = YAML.load_file(Rails.root.join('config', 'split.yml'))
Split.redis = split_config[Rails.env]
```
### Redis Caching (v4.0+)
In some high-volume usage scenarios, Redis load can be incurred by repeated
fetches for fairly static data. Enabling caching will reduce this load.
```ruby
Split.configuration.cache = true
````
This currently caches:
- `Split::ExperimentCatalog.find`
- `Split::Experiment.start_time`
- `Split::Experiment.winner`
## Namespaces
If you're running multiple, separate instances of Split you may want
to namespace the keyspaces so they do not overlap. This is not unlike
the approach taken by many memcached clients.
This feature can be provided by the [redis-namespace](https://github.com/defunkt/redis-namespace)
library. To configure Split to use `Redis::Namespace`, do the following:
1. Add `redis-namespace` to your Gemfile:
```ruby
gem 'redis-namespace'
```
2. Configure `Split.redis` to use a `Redis::Namespace` instance (possible in an
initializer):
```ruby
redis = Redis.new(url: ENV['REDIS_URL']) # or whatever config you want
Split.redis = Redis::Namespace.new(:your_namespace, redis: redis)
```
## Outside of a Web Session
Split provides the Helper module to facilitate running experiments inside web sessions.
Alternatively, you can access the underlying Metric, Trial, Experiment and Alternative objects to
conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
trial.choose!
# get the result, returns either red or blue
trial.alternative.name
# if the goal has been achieved, increment the successful completions for this alternative.
if goal_achieved?
trial.complete!
end
```
## Algorithms
By default, Split ships with `Split::Algorithms::WeightedSample` that randomly selects from possible alternatives for a traditional a/b test.
It is possible to specify static weights to favor certain alternatives.
`Split::Algorithms::Whiplash` is an implementation of a [multi-armed bandit algorithm](http://stevehanov.ca/blog/index.php?id=132).
This algorithm will automatically weight the alternatives based on their relative performance,
choosing the better-performing ones more often as trials are completed.
`Split::Algorithms::BlockRandomization` is an algorithm that ensures equal
participation across all alternatives. This algorithm will choose the alternative
with the fewest participants. In the event of multiple minimum participant alternatives
(i.e. starting a new "Block") the algorithm will choose a random alternative from
those minimum participant alternatives.
Users may also write their own algorithms. The default algorithm may be specified globally in the configuration file, or on a per experiment basis using the experiments hash of the configuration file.
To change the algorithm globally for all experiments, use the following in your initializer:
```ruby
Split.configure do |config|
config.algorithm = Split::Algorithms::Whiplash
end
```
## Extensions
- [Split::Export](https://github.com/splitrb/split-export) - Easily export A/B test data out of Split.
- [Split::Analytics](https://github.com/splitrb/split-analytics) - Push test data to Google Analytics.
- [Split::Mongoid](https://github.com/MongoHQ/split-mongoid) - Store experiment data in mongoid (still uses redis).
- [Split::Cacheable](https://github.com/harrystech/split_cacheable) - Automatically create cache buckets per test.
- [Split::Counters](https://github.com/bernardkroes/split-counters) - Add counters per experiment and alternative.
- [Split::Cli](https://github.com/craigmcnamara/split-cli) - A CLI to trigger Split A/B tests.
## Screencast
Ryan bates has produced an excellent 10 minute screencast about split on the Railscasts site: [A/B Testing with Split](http://railscasts.com/episodes/331-a-b-testing-with-split)
## Blogposts
* [Recipe: A/B testing with KISSMetrics and the split gem](https://robots.thoughtbot.com/post/9595887299/recipe-a-b-testing-with-kissmetrics-and-the-split-gem)
* [Rails A/B testing with Split on Heroku](http://blog.nathanhumbert.com/2012/02/rails-ab-testing-with-split-on-heroku.html)
## Backers
Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/split#backer)]
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## Sponsors
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## Contribute
Please do! Over 70 different people have contributed to the project, you can see them all here: https://github.com/splitrb/split/graphs/contributors.
### Development
The source code is hosted at [GitHub](https://github.com/splitrb/split).
Report issues and feature requests on [GitHub Issues](https://github.com/splitrb/split/issues).
You can find a discussion form on [Google Groups](https://groups.google.com/d/forum/split-ruby).
### Tests
Run the tests like this:
# Start a Redis server in another tab.
redis-server
bundle
rake spec
### A Note on Patches and Pull Requests
* Fork the project.
* Make your feature addition or bug fix.
* Add tests for it. This is important so I don't break it in a
future version unintentionally.
* Add documentation if necessary.
* Commit. Do not mess with the rakefile, version, or history.
(If you want to have your own version, that is fine. But bump the version in a commit by itself, which I can ignore when I pull.)
* Send a pull request. Bonus points for topic branches.
### Code of Conduct
Please note that this project is released with a [Contributor Code of Conduct](CODE_OF_CONDUCT.md). By participating in this project you agree to abide by its terms.
## Copyright
[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
<MSG> Merge pull request #305 from patbl/master
Update documentation regarding Split::Experiment.
<DFF> @@ -614,7 +614,7 @@ conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
-experiment = Split::Experiment.find_or_create('color', 'red', 'blue')
+experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
| 1 | Merge pull request #305 from patbl/master | 1 | .md | md | mit | splitrb/split |
10070891 | <NME> README.md
<BEF> # [Split](https://libraries.io/rubygems/split)
[](http://badge.fury.io/rb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://codeclimate.com/github/splitrb/split/coverage)
[](https://github.com/RichardLitt/standard-readme)
[](https://www.codetriage.com/splitrb/split)
> 📈 The Rack Based A/B testing framework https://libraries.io/rubygems/split
Split is a rack based A/B testing framework designed to work with Rails, Sinatra or any other rack based app.
Split is heavily inspired by the [Abingo](https://github.com/ryanb/abingo) and [Vanity](https://github.com/assaf/vanity) Rails A/B testing plugins and [Resque](https://github.com/resque/resque) in its use of Redis.
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
## Install
### Requirements
Split v4.0+ is currently tested with Ruby >= 2.5 and Rails >= 5.2.
If your project requires compatibility with Ruby 2.4.x or older Rails versions. You can try v3.0 or v0.8.0(for Ruby 1.9.3)
Split uses Redis as a datastore.
Split only supports Redis 4.0 or greater.
If you're on OS X, Homebrew is the simplest way to install Redis:
```bash
brew install redis
redis-server /usr/local/etc/redis.conf
```
You now have a Redis daemon running on port `6379`.
### Setup
```bash
gem install split
```
#### Rails
Adding `gem 'split'` to your Gemfile will autoload it when rails starts up, as long as you've configured Redis it will 'just work'.
#### Sinatra
To configure Sinatra with Split you need to enable sessions and mix in the helper methods. Add the following lines at the top of your Sinatra app:
```ruby
require 'split'
class MySinatraApp < Sinatra::Base
enable :sessions
helpers Split::Helper
get '/' do
...
end
```
## Usage
To begin your A/B test use the `ab_test` method, naming your experiment with the first argument and then the different alternatives which you wish to test on as the other arguments.
`ab_test` returns one of the alternatives, if a user has already seen that test they will get the same alternative as before, which you can use to split your code on.
It can be used to render different templates, show different text or any other case based logic.
`ab_finished` is used to make a completion of an experiment, or conversion.
Example: View
```erb
<% ab_test(:login_button, "/images/button1.jpg", "/images/button2.jpg") do |button_file| %>
<%= image_tag(button_file, alt: "Login!") %>
<% end %>
```
Example: Controller
```ruby
def register_new_user
# See what level of free points maximizes users' decision to buy replacement points.
@starter_points = ab_test(:new_user_free_points, '100', '200', '300')
end
```
Example: Conversion tracking (in a controller!)
```ruby
def buy_new_points
# some business logic
ab_finished(:new_user_free_points)
end
```
Example: Conversion tracking (in a view)
```erb
Thanks for signing up, dude! <% ab_finished(:signup_page_redesign) %>
```
You can find more examples, tutorials and guides on the [wiki](https://github.com/splitrb/split/wiki).
## Statistical Validity
Split has two options for you to use to determine which alternative is the best.
The first option (default on the dashboard) uses a z test (n>30) for the difference between your control and alternative conversion rates to calculate statistical significance. This test will tell you whether an alternative is better or worse than your control, but it will not distinguish between which alternative is the best in an experiment with multiple alternatives. Split will only tell you if your experiment is 90%, 95%, or 99% significant, and this test only works if you have more than 30 participants and 5 conversions for each branch.
As per this [blog post](https://www.evanmiller.org/how-not-to-run-an-ab-test.html) on the pitfalls of A/B testing, it is highly recommended that you determine your requisite sample size for each branch before running the experiment. Otherwise, you'll have an increased rate of false positives (experiments which show a significant effect where really there is none).
[Here](https://www.evanmiller.org/ab-testing/sample-size.html) is a sample size calculator for your convenience.
The second option uses simulations from a beta distribution to determine the probability that the given alternative is the winner compared to all other alternatives. You can view these probabilities by clicking on the drop-down menu labeled "Confidence." This option should be used when the experiment has more than just 1 control and 1 alternative. It can also be used for a simple, 2-alternative A/B test.
Calculating the beta-distribution simulations for a large number of experiments can be slow, so the results are cached. You can specify how often they should be recalculated (the default is once per day).
```ruby
Split.configure do |config|
config.winning_alternative_recalculation_interval = 3600 # 1 hour
end
```
## Extras
### Weighted alternatives
Perhaps you only want to show an alternative to 10% of your visitors because it is very experimental or not yet fully load tested.
To do this you can pass a weight with each alternative in the following ways:
```ruby
ab_test(:homepage_design, {'Old' => 18}, {'New' => 2})
ab_test(:homepage_design, 'Old', {'New' => 1.0/9})
ab_test(:homepage_design, {'Old' => 9}, 'New')
```
This will only show the new alternative to visitors 1 in 10 times, the default weight for an alternative is 1.
### Overriding alternatives
For development and testing, you may wish to force your app to always return an alternative.
You can do this by passing it as a parameter in the url.
If you have an experiment called `button_color` with alternatives called `red` and `blue` used on your homepage, a url such as:
http://myawesomesite.com?ab_test[button_color]=red
will always have red buttons. This won't be stored in your session or count towards to results, unless you set the `store_override` configuration option.
In the event you want to disable all tests without having to know the individual experiment names, add a `SPLIT_DISABLE` query parameter.
http://myawesomesite.com?SPLIT_DISABLE=true
It is not required to send `SPLIT_DISABLE=false` to activate Split.
### Rspec Helper
To aid testing with RSpec, write `spec/support/split_helper.rb` and call `use_ab_test(alternatives_by_experiment)` in your specs as instructed below:
```ruby
# Create a file with these contents at 'spec/support/split_helper.rb'
# and ensure it is `require`d in your rails_helper.rb or spec_helper.rb
module SplitHelper
# Force a specific experiment alternative to always be returned:
# use_ab_test(signup_form: "single_page")
#
# Force alternatives for multiple experiments:
# use_ab_test(signup_form: "single_page", pricing: "show_enterprise_prices")
#
def use_ab_test(alternatives_by_experiment)
allow_any_instance_of(Split::Helper).to receive(:ab_test) do |_receiver, experiment, &block|
variant = alternatives_by_experiment.fetch(experiment) { |key| raise "Unknown experiment '#{key}'" }
block.call(variant) unless block.nil?
variant
end
end
end
# Make the `use_ab_test` method available to all specs:
RSpec.configure do |config|
config.include SplitHelper
end
```
Now you can call `use_ab_test(alternatives_by_experiment)` in your specs, for example:
```ruby
it "registers using experimental signup" do
use_ab_test experiment_name: "alternative_name"
post "/signups"
...
end
```
### Starting experiments manually
By default new A/B tests will be active right after deployment. In case you would like to start new test a while after
the deploy, you can do it by setting the `start_manually` configuration option to `true`.
After choosing this option tests won't be started right after deploy, but after pressing the `Start` button in Split admin dashboard. If a test is deleted from the Split dashboard, then it can only be started after pressing the `Start` button whenever being re-initialized.
### Reset after completion
When a user completes a test their session is reset so that they may start the test again in the future.
To stop this behaviour you can pass the following option to the `ab_finished` method:
```ruby
ab_finished(:experiment_name, reset: false)
```
The user will then always see the alternative they started with.
Any old unfinished experiment key will be deleted from the user's data storage if the experiment had been removed or is over and a winner had been chosen. This allows a user to enroll into any new experiment in cases when the `allow_multiple_experiments` config option is set to `false`.
### Reset experiments manually
By default Split automatically resets the experiment whenever it detects the configuration for an experiment has changed (e.g. you call `ab_test` with different alternatives). You can prevent this by setting the option `reset_manually` to `true`.
You may want to do this when you want to change something, like the variants' names, the metadata about an experiment, etc. without resetting everything.
### Multiple experiments at once
By default Split will avoid users participating in multiple experiments at once. This means you are less likely to skew results by adding in more variation to your tests.
To stop this behaviour and allow users to participate in multiple experiments at once set the `allow_multiple_experiments` config option to true like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = true
end
```
This will allow the user to participate in any number of experiments and belong to any alternative in each experiment. This has the possible downside of a variation in one experiment influencing the outcome of another.
To address this, setting the `allow_multiple_experiments` config option to 'control' like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = 'control'
end
```
For this to work, each and every experiment you define must have an alternative named 'control'. This will allow the user to participate in multiple experiments as long as the user belongs to the alternative 'control' in each experiment. As soon as the user belongs to an alternative named something other than 'control' the user may not participate in any more experiments. Calling ab_test(<other experiments>) will always return the first alternative without adding the user to that experiment.
### Experiment Persistence
Split comes with three built-in persistence adapters for storing users and the alternatives they've been given for each experiment.
By default Split will store the tests for each user in the session.
You can optionally configure Split to use a cookie, Redis, or any custom adapter of your choosing.
#### Cookies
```ruby
Split.configure do |config|
config.persistence = :cookie
end
```
When using the cookie persistence, Split stores data into an anonymous tracking cookie named 'split', which expires in 1 year. To change that, set the `persistence_cookie_length` in the configuration (unit of time in seconds).
```ruby
Split.configure do |config|
config.persistence = :cookie
config.persistence_cookie_length = 2592000 # 30 days
end
```
The data stored consists of the experiment name and the variants the user is in. Example: { "experiment_name" => "variant_a" }
__Note:__ Using cookies depends on `ActionDispatch::Cookies` or any identical API
#### Redis
Using Redis will allow ab_users to persist across sessions or machines.
```ruby
Split.configure do |config|
config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: -> (context) { context.current_user_id })
# Equivalent
# config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: :current_user_id)
end
```
Options:
* `lookup_by`: method to invoke per request for uniquely identifying ab_users (mandatory configuration)
* `namespace`: separate namespace to store these persisted values (default "persistence")
* `expire_seconds`: sets TTL for user key. (if a user is in multiple experiments most recent update will reset TTL for all their assignments)
#### Dual Adapter
The Dual Adapter allows the use of different persistence adapters for logged-in and logged-out users. A common use case is to use Redis for logged-in users and Cookies for logged-out users.
```ruby
cookie_adapter = Split::Persistence::CookieAdapter
redis_adapter = Split::Persistence::RedisAdapter.with_config(
lookup_by: -> (context) { context.send(:current_user).try(:id) },
expire_seconds: 2592000)
Split.configure do |config|
config.persistence = Split::Persistence::DualAdapter.with_config(
logged_in: -> (context) { !context.send(:current_user).try(:id).nil? },
logged_in_adapter: redis_adapter,
logged_out_adapter: cookie_adapter)
config.persistence_cookie_length = 2592000 # 30 days
end
```
#### Custom Adapter
Your custom adapter needs to implement the same API as existing adapters.
See `Split::Persistence::CookieAdapter` or `Split::Persistence::SessionAdapter` for a starting point.
```ruby
Split.configure do |config|
config.persistence = YourCustomAdapterClass
end
```
### Trial Event Hooks
You can define methods that will be called at the same time as experiment
alternative participation and goal completion.
For example:
``` ruby
Split.configure do |config|
config.on_trial = :log_trial # run on every trial
config.on_trial_choose = :log_trial_choose # run on trials with new users only
config.on_trial_complete = :log_trial_complete
end
```
Set these attributes to a method name available in the same context as the
`ab_test` method. These methods should accept one argument, a `Trial` instance.
``` ruby
def log_trial(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_choose(trial)
logger.info "[new user] experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_complete(trial)
logger.info "experiment=%s alternative=%s user=%s complete=true" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
#### Views
If you are running `ab_test` from a view, you must define your event
hook callback as a
[helper_method](https://apidock.com/rails/AbstractController/Helpers/ClassMethods/helper_method)
in the controller:
``` ruby
helper_method :log_trial_choose
def log_trial_choose(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
### Experiment Hooks
You can assign a proc that will be called when an experiment is reset or deleted. You can use these hooks to call methods within your application to keep data related to experiments in sync with Split.
For example:
``` ruby
Split.configure do |config|
# after experiment reset or deleted
config.on_experiment_reset = -> (example) { # Do something on reset }
config.on_experiment_delete = -> (experiment) { # Do something else on delete }
# before experiment reset or deleted
config.on_before_experiment_reset = -> (example) { # Do something on reset }
config.on_before_experiment_delete = -> (experiment) { # Do something else on delete }
# after experiment winner had been set
config.on_experiment_winner_choose = -> (experiment) { # Do something on winner choose }
end
```
## Web Interface
Split comes with a Sinatra-based front end to get an overview of how your experiments are doing.
If you are running Rails 2: You can mount this inside your app using Rack::URLMap in your `config.ru`
```ruby
require 'split/dashboard'
run Rack::URLMap.new \
"/" => Your::App.new,
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
```
Then adding this to config/routes.rb
```ruby
mount Split::Dashboard, at: 'split'
```
You may want to password protect that page, you can do so with `Rack::Auth::Basic` (in your split initializer file)
```ruby
# Rails apps or apps that already depend on activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
# Apps without activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
```
You can even use Devise or any other Warden-based authentication method to authorize users. Just replace `mount Split::Dashboard, :at => 'split'` in `config/routes.rb` with the following:
```ruby
match "/split" => Split::Dashboard, anchor: false, via: [:get, :post, :delete], constraints: -> (request) do
request.env['warden'].authenticated? # are we authenticated?
request.env['warden'].authenticate! # authenticate if not already
# or even check any other condition such as request.env['warden'].user.is_admin?
end
```
More information on this [here](https://steve.dynedge.co.uk/2011/12/09/controlling-access-to-routes-and-rack-apps-in-rails-3-with-devise-and-warden/)
### Screenshot
## Configuration
You can override the default configuration options of Split like so:
```ruby
Split.configure do |config|
config.db_failover = true # handle Redis errors gracefully
config.db_failover_on_db_error = -> (error) { Rails.logger.error(error.message) }
config.allow_multiple_experiments = true
config.enabled = true
config.persistence = Split::Persistence::SessionAdapter
#config.start_manually = false ## new test will have to be started manually from the admin panel. default false
#config.reset_manually = false ## if true, it never resets the experiment data, even if the configuration changes
config.include_rails_helper = true
config.redis = "redis://custom.redis.url:6380"
end
```
Split looks for the Redis host in the environment variable `REDIS_URL` then
defaults to `redis://localhost:6379` if not specified by configure block.
On platforms like Heroku, Split will use the value of `REDIS_PROVIDER` to
determine which env variable key to use when retrieving the host config. This
defaults to `REDIS_URL`.
### Filtering
In most scenarios you don't want to have AB-Testing enabled for web spiders, robots or special groups of users.
Split provides functionality to filter this based on a predefined, extensible list of bots, IP-lists or custom exclude logic.
```ruby
Split.configure do |config|
# bot config
config.robot_regex = /my_custom_robot_regex/ # or
config.bots['newbot'] = "Description for bot with 'newbot' user agent, which will be added to config.robot_regex for exclusion"
# IP config
config.ignore_ip_addresses << '81.19.48.130' # or regex: /81\.19\.48\.[0-9]+/
# or provide your own filter functionality, the default is proc{ |request| is_robot? || is_ignored_ip_address? || is_preview? }
config.ignore_filter = -> (request) { CustomExcludeLogic.excludes?(request) }
end
```
### Experiment configuration
Instead of providing the experiment options inline, you can store them
in a hash. This hash can control your experiment's alternatives, weights,
algorithm and if the experiment resets once finished:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
resettable: false
},
:my_second_experiment => {
algorithm: 'Split::Algorithms::Whiplash',
alternatives: [
{ name: "a", percent: 67 },
{ name: "b", percent: 33 }
]
}
}
end
```
You can also store your experiments in a YAML file:
```ruby
Split.configure do |config|
config.experiments = YAML.load_file "config/experiments.yml"
end
```
You can then define the YAML file like:
```yaml
my_first_experiment:
alternatives:
- a
- b
my_second_experiment:
alternatives:
- name: a
percent: 67
- name: b
percent: 33
resettable: false
```
This simplifies the calls from your code:
```ruby
ab_test(:my_first_experiment)
```
and:
```ruby
ab_finished(:my_first_experiment)
```
You can also add meta data for each experiment, which is very useful when you need more than an alternative name to change behaviour:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metadata: {
"a" => {"text" => "Have a fantastic day"},
"b" => {"text" => "Don't get hit by a bus"}
}
}
}
end
```
```yaml
my_first_experiment:
alternatives:
- a
- b
metadata:
a:
text: "Have a fantastic day"
b:
text: "Don't get hit by a bus"
```
This allows for some advanced experiment configuration using methods like:
```ruby
trial.alternative.name # => "a"
trial.metadata['text'] # => "Have a fantastic day"
```
or in views:
```erb
<% ab_test("my_first_experiment") do |alternative, meta| %>
<%= alternative %>
<small><%= meta['text'] %></small>
<% end %>
```
The keys used in meta data should be Strings
```ruby
# create a new experiment
experiment = Split::Experiment.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metric: :my_metric
}
}
end
```
Your code may then track a completion using the metric instead of
the experiment name:
```ruby
ab_finished(:my_metric)
```
You can also create a new metric by instantiating and saving a new Metric object.
```ruby
Split::Metric.new(:my_metric)
Split::Metric.save
```
#### Goals
You might wish to allow an experiment to have multiple, distinguishable goals.
The API to define goals for an experiment is this:
```ruby
ab_test({link_color: ["purchase", "refund"]}, "red", "blue")
```
or you can define them in a configuration file:
```ruby
Split.configure do |config|
config.experiments = {
link_color: {
alternatives: ["red", "blue"],
goals: ["purchase", "refund"]
}
}
end
```
To complete a goal conversion, you do it like:
```ruby
ab_finished(link_color: "purchase")
```
Note that if you pass additional options, that should be a separate hash:
```ruby
ab_finished({ link_color: "purchase" }, reset: false)
```
**NOTE:** This does not mean that a single experiment can complete more than one goal.
Once you finish one of the goals, the test is considered to be completed, and finishing the other goal will no longer register. (Assuming the test runs with `reset: false`.)
**Good Example**: Test if listing Plan A first result in more conversions to Plan A (goal: "plana_conversion") or Plan B (goal: "planb_conversion").
**Bad Example**: Test if button color increases conversion rate through multiple steps of a funnel. THIS WILL NOT WORK.
**Bad Example**: Test both how button color affects signup *and* how it affects login, at the same time. THIS WILL NOT WORK.
#### Combined Experiments
If you want to test how button color affects signup *and* how it affects login at the same time, use combined experiments.
Configure like so:
```ruby
Split.configuration.experiments = {
:button_color_experiment => {
:alternatives => ["blue", "green"],
:combined_experiments => ["button_color_on_signup", "button_color_on_login"]
}
}
```
Starting the combined test starts all combined experiments
```ruby
ab_combined_test(:button_color_experiment)
```
Finish each combined test as normal
```ruby
ab_finished(:button_color_on_login)
ab_finished(:button_color_on_signup)
```
**Additional Configuration**:
* Be sure to enable `allow_multiple_experiments`
* In Sinatra include the CombinedExperimentsHelper
```
helpers Split::CombinedExperimentsHelper
```
### DB failover solution
Due to the fact that Redis has no automatic failover mechanism, it's
possible to switch on the `db_failover` config option, so that `ab_test`
and `ab_finished` will not crash in case of a db failure. `ab_test` always
delivers alternative A (the first one) in that case.
It's also possible to set a `db_failover_on_db_error` callback (proc)
for example to log these errors via Rails.logger.
### Redis
You may want to change the Redis host and port Split connects to, or
set various other options at startup.
Split has a `redis` setter which can be given a string or a Redis
object. This means if you're already using Redis in your app, Split
can re-use the existing connection.
String: `Split.redis = 'redis://localhost:6379'`
Redis: `Split.redis = $redis`
For our rails app we have a `config/initializers/split.rb` file where
we load `config/split.yml` by hand and set the Redis information
appropriately.
Here's our `config/split.yml`:
```yml
development: redis://localhost:6379
test: redis://localhost:6379
staging: redis://redis1.example.com:6379
fi: redis://localhost:6379
production: redis://redis1.example.com:6379
```
And our initializer:
```ruby
split_config = YAML.load_file(Rails.root.join('config', 'split.yml'))
Split.redis = split_config[Rails.env]
```
### Redis Caching (v4.0+)
In some high-volume usage scenarios, Redis load can be incurred by repeated
fetches for fairly static data. Enabling caching will reduce this load.
```ruby
Split.configuration.cache = true
````
This currently caches:
- `Split::ExperimentCatalog.find`
- `Split::Experiment.start_time`
- `Split::Experiment.winner`
## Namespaces
If you're running multiple, separate instances of Split you may want
to namespace the keyspaces so they do not overlap. This is not unlike
the approach taken by many memcached clients.
This feature can be provided by the [redis-namespace](https://github.com/defunkt/redis-namespace)
library. To configure Split to use `Redis::Namespace`, do the following:
1. Add `redis-namespace` to your Gemfile:
```ruby
gem 'redis-namespace'
```
2. Configure `Split.redis` to use a `Redis::Namespace` instance (possible in an
initializer):
```ruby
redis = Redis.new(url: ENV['REDIS_URL']) # or whatever config you want
Split.redis = Redis::Namespace.new(:your_namespace, redis: redis)
```
## Outside of a Web Session
Split provides the Helper module to facilitate running experiments inside web sessions.
Alternatively, you can access the underlying Metric, Trial, Experiment and Alternative objects to
conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
trial.choose!
# get the result, returns either red or blue
trial.alternative.name
# if the goal has been achieved, increment the successful completions for this alternative.
if goal_achieved?
trial.complete!
end
```
## Algorithms
By default, Split ships with `Split::Algorithms::WeightedSample` that randomly selects from possible alternatives for a traditional a/b test.
It is possible to specify static weights to favor certain alternatives.
`Split::Algorithms::Whiplash` is an implementation of a [multi-armed bandit algorithm](http://stevehanov.ca/blog/index.php?id=132).
This algorithm will automatically weight the alternatives based on their relative performance,
choosing the better-performing ones more often as trials are completed.
`Split::Algorithms::BlockRandomization` is an algorithm that ensures equal
participation across all alternatives. This algorithm will choose the alternative
with the fewest participants. In the event of multiple minimum participant alternatives
(i.e. starting a new "Block") the algorithm will choose a random alternative from
those minimum participant alternatives.
Users may also write their own algorithms. The default algorithm may be specified globally in the configuration file, or on a per experiment basis using the experiments hash of the configuration file.
To change the algorithm globally for all experiments, use the following in your initializer:
```ruby
Split.configure do |config|
config.algorithm = Split::Algorithms::Whiplash
end
```
## Extensions
- [Split::Export](https://github.com/splitrb/split-export) - Easily export A/B test data out of Split.
- [Split::Analytics](https://github.com/splitrb/split-analytics) - Push test data to Google Analytics.
- [Split::Mongoid](https://github.com/MongoHQ/split-mongoid) - Store experiment data in mongoid (still uses redis).
- [Split::Cacheable](https://github.com/harrystech/split_cacheable) - Automatically create cache buckets per test.
- [Split::Counters](https://github.com/bernardkroes/split-counters) - Add counters per experiment and alternative.
- [Split::Cli](https://github.com/craigmcnamara/split-cli) - A CLI to trigger Split A/B tests.
## Screencast
Ryan bates has produced an excellent 10 minute screencast about split on the Railscasts site: [A/B Testing with Split](http://railscasts.com/episodes/331-a-b-testing-with-split)
## Blogposts
* [Recipe: A/B testing with KISSMetrics and the split gem](https://robots.thoughtbot.com/post/9595887299/recipe-a-b-testing-with-kissmetrics-and-the-split-gem)
* [Rails A/B testing with Split on Heroku](http://blog.nathanhumbert.com/2012/02/rails-ab-testing-with-split-on-heroku.html)
## Backers
Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/split#backer)]
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## Sponsors
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## Contribute
Please do! Over 70 different people have contributed to the project, you can see them all here: https://github.com/splitrb/split/graphs/contributors.
### Development
The source code is hosted at [GitHub](https://github.com/splitrb/split).
Report issues and feature requests on [GitHub Issues](https://github.com/splitrb/split/issues).
You can find a discussion form on [Google Groups](https://groups.google.com/d/forum/split-ruby).
### Tests
Run the tests like this:
# Start a Redis server in another tab.
redis-server
bundle
rake spec
### A Note on Patches and Pull Requests
* Fork the project.
* Make your feature addition or bug fix.
* Add tests for it. This is important so I don't break it in a
future version unintentionally.
* Add documentation if necessary.
* Commit. Do not mess with the rakefile, version, or history.
(If you want to have your own version, that is fine. But bump the version in a commit by itself, which I can ignore when I pull.)
* Send a pull request. Bonus points for topic branches.
### Code of Conduct
Please note that this project is released with a [Contributor Code of Conduct](CODE_OF_CONDUCT.md). By participating in this project you agree to abide by its terms.
## Copyright
[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
<MSG> Merge pull request #305 from patbl/master
Update documentation regarding Split::Experiment.
<DFF> @@ -614,7 +614,7 @@ conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
-experiment = Split::Experiment.find_or_create('color', 'red', 'blue')
+experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
| 1 | Merge pull request #305 from patbl/master | 1 | .md | md | mit | splitrb/split |
10070892 | <NME> parser.ts
<BEF> import { equal, throws } from 'assert';
import parser, { CSSFunction, CSSKeyword, CSSString, CSSNumber } from '../src/index';
import stringify from './assets/stringify';
describe('CSS Abbreviation parser', () => {
const parse = (abbr: string) => stringify(parser(abbr));
it('numeric units', () => {
equal(parse('p10'), 'p: 10;');
equal(parse('p-10'), 'p: -10;');
equal(parse('p-10-'), 'p: -10;');
equal(parse('p-10-20'), 'p: -10 20;');
equal(parse('p-10--20'), 'p: -10 -20;');
equal(parse('p-10-20--30'), 'p: -10 20 -30;');
equal(parse('p-10p-20--30'), 'p: -10p -20 -30;');
equal(parse('p-10%-20--30'), 'p: -10% -20 -30;');
equal(parse('p.5'), 'p: 0.5;');
equal(parse('p-.5'), 'p: -0.5;');
equal(parse('p.1.2.3'), 'p: 0.1 0.2 0.3;');
equal(parse('p.1-.2.3'), 'p: 0.1 0.2 0.3;');
equal(parse('p.1--.2.3'), 'p: 0.1 -0.2 0.3;');
equal(parse('10'), '10;');
equal(parse('.1'), '0.1;');
throws(() => parse('.foo'), /Unexpected character at 1/);
});
it('color', () => {
equal(parse('c#'), 'c: #000000;');
equal(parse('c#1'), 'c: #111111;');
equal(parse('c#f'), 'c: #ffffff;');
equal(parse('c#a#b#c'), 'c: #aaaaaa #bbbbbb #cccccc;');
equal(parse('c#af'), 'c: #afafaf;');
equal(parse('c#fc0'), 'c: #ffcc00;');
equal(parse('c#11.5'), 'c: rgba(17, 17, 17, 0.5);');
equal(parse('c#.99'), 'c: rgba(0, 0, 0, 0.99);');
equal(parse('c#t'), 'c: transparent;');
});
it('keywords', () => {
equal(parse('m:a'), 'm: a;');
equal(parse('m-a'), 'm: a;');
equal(parse('m-abc'), 'm: abc;');
equal(parse('m-a0'), 'm: a 0;');
equal(parse('m-a0-a'), 'm: a 0 a;');
});
it('arguments', () => {
const g = parser('lg(top, "red, black", rgb(0, 0, 0) 10%)').elements[0].value![0] as CSSFunction;
equal(g.name, 'lg');
equal(g.arguments.length, 3);
let arg = g.arguments[0];
equal(arg.items.length, 1);
equal(arg.items[0].type, 'CSSKeyword');
equal((arg.items[0] as CSSKeyword).value, 'top');
arg = g.arguments[1];
equal(arg.items.length, 1);
equal(arg.items[0].type, 'CSSString');
equal((arg.items[0] as CSSString).value, '"red, black"');
arg = g.arguments[2];
equal(arg.items.length, 2);
equal(arg.items[0].type, 'CSSFunction');
const args = (arg.items[0] as CSSFunction).arguments;
equal(args.length, 3);
equal(args[0].items[0].type, 'CSSNumber');
equal((args[0].items[0] as CSSNumber).value, 0);
});
it('important/exclamation', () => {
equal(parse('!'), '!;');
equal(parse('p!'), 'p: !;');
equal(parse('p10!'), 'p: 10!;');
});
it('mixed', () => {
equal(parse('bd1-s#fc0'), 'bd: 1 s #ffcc00;');
equal(parse('bd#fc0-1'), 'bd: #ffcc00 1;');
equal(parse('p0+m0'), 'p: 0;m: 0;');
equal(parse('p0!+m0!'), 'p: 0!;m: 0!;');
});
it('embedded variables', () => {
equal(parse('foo$bar'), 'foo: $bar;');
equal(parse('foo$bar-2'), 'foo: $bar-2;');
equal(parse('foo$bar@bam'), 'foo: $bar @bam;');
});
});
equal(expand('p.5'), 'p: 0.5;');
equal(expand('p-.5'), 'p: -0.5;');
equal(expand('p.1.2.3'), 'p: 0.1 0.2 0.3;');
equal(expand('p.1-.2.3'), 'p: 0.1 0.2 0.3;');
equal(expand('10'), '?: 10;');
equal(expand('.1'), '?: 0.1;');
equal(expand('lh1.'), 'lh: 1;');
});
it('color', () => {
equal(expand('c#'), 'c: #000000;');
equal(expand('c#1'), 'c: #111111;');
equal(expand('c#f'), 'c: #ffffff;');
equal(expand('c#a#b#c'), 'c: #aaaaaa #bbbbbb #cccccc;');
equal(expand('c#af'), 'c: #afafaf;');
equal(expand('c#fc0'), 'c: #ffcc00;');
equal(expand('c#11.5'), 'c: rgba(17, 17, 17, 0.5);');
equal(expand('c#.99'), 'c: rgba(0, 0, 0, 0.99);');
equal(expand('c#t'), 'c: transparent;');
});
it('keywords', () => {
equal(expand('m:a'), 'm: a;');
equal(expand('m-a'), 'm: a;');
equal(expand('m-abc'), 'm: abc;');
equal(expand('m-a0'), 'm: a 0;');
equal(expand('m-a0-a'), 'm: a 0 a;');
});
it('functions', () => {
equal(expand('bg-lg(top, "red, black",rgb(0, 0, 0) 10%)'), 'bg: lg(top, "red, black", rgb(0, 0, 0) 10%);');
equal(expand('lg(top, "red, black",rgb(0, 0, 0) 10%)'), '?: lg(top, "red, black", rgb(0, 0, 0) 10%);');
});
it('mixed', () => {
equal(expand('bd1-s#fc0'), 'bd: 1 s #ffcc00;');
equal(expand('bd#fc0-1'), 'bd: #ffcc00 1;');
equal(expand('p0+m0'), 'p: 0;m: 0;');
equal(expand('p0!+m0!'), 'p: 0 !important;m: 0 !important;');
});
it('embedded variables', () => {
equal(expand('foo$bar'), 'foo: $bar;');
equal(expand('foo$bar-2'), 'foo: $bar-2;');
equal(expand('foo$bar@bam'), 'foo: $bar @bam;');
});
it('parse value', () => {
const opt: ParseOptions = { value: true };
let prop = parse('${1:foo} ${2:bar}, baz', opt)[0];
equal(prop.name, undefined);
equal(prop.value.length, 2);
equal(prop.value[0].value.length, 2);
equal(prop.value[0].value[0].type, 'Field');
prop = parse('scale3d(${1:x}, ${2:y}, ${3:z})', opt)[0];
const fn = prop.value[0].value[0] as FunctionCall;
equal(prop.value.length, 1);
equal(prop.value[0].value.length, 1);
equal(fn.type, 'FunctionCall');
equal(fn.name, 'scale3d');
prop = parse('repeat(2,auto) / repeat(auto-fit, minmax(250px, 1fr))', opt)[0];
equal(prop.value.length, 1);
});
it('errors', () => {
throws(() => expand('p10 '), /Unexpected token/);
});
});
<MSG> Working parser implementation
<DFF> @@ -1,92 +1,13 @@
-import { equal, throws } from 'assert';
-import parser, { CSSFunction, CSSKeyword, CSSString, CSSNumber } from '../src/index';
-import stringify from './assets/stringify';
+// import { equal, throws } from 'assert';
+import parser from '../src/parser';
+import tokenizer from '../src/tokenizer';
+// import stringify from './assets/stringify';
-describe('CSS Abbreviation parser', () => {
- const parse = (abbr: string) => stringify(parser(abbr));
-
- it('numeric units', () => {
- equal(parse('p10'), 'p: 10;');
- equal(parse('p-10'), 'p: -10;');
- equal(parse('p-10-'), 'p: -10;');
- equal(parse('p-10-20'), 'p: -10 20;');
- equal(parse('p-10--20'), 'p: -10 -20;');
- equal(parse('p-10-20--30'), 'p: -10 20 -30;');
- equal(parse('p-10p-20--30'), 'p: -10p -20 -30;');
- equal(parse('p-10%-20--30'), 'p: -10% -20 -30;');
-
- equal(parse('p.5'), 'p: 0.5;');
- equal(parse('p-.5'), 'p: -0.5;');
- equal(parse('p.1.2.3'), 'p: 0.1 0.2 0.3;');
- equal(parse('p.1-.2.3'), 'p: 0.1 0.2 0.3;');
- equal(parse('p.1--.2.3'), 'p: 0.1 -0.2 0.3;');
-
- equal(parse('10'), '10;');
- equal(parse('.1'), '0.1;');
- throws(() => parse('.foo'), /Unexpected character at 1/);
- });
-
- it('color', () => {
- equal(parse('c#'), 'c: #000000;');
- equal(parse('c#1'), 'c: #111111;');
- equal(parse('c#f'), 'c: #ffffff;');
- equal(parse('c#a#b#c'), 'c: #aaaaaa #bbbbbb #cccccc;');
- equal(parse('c#af'), 'c: #afafaf;');
- equal(parse('c#fc0'), 'c: #ffcc00;');
- equal(parse('c#11.5'), 'c: rgba(17, 17, 17, 0.5);');
- equal(parse('c#.99'), 'c: rgba(0, 0, 0, 0.99);');
- equal(parse('c#t'), 'c: transparent;');
- });
-
- it('keywords', () => {
- equal(parse('m:a'), 'm: a;');
- equal(parse('m-a'), 'm: a;');
- equal(parse('m-abc'), 'm: abc;');
- equal(parse('m-a0'), 'm: a 0;');
- equal(parse('m-a0-a'), 'm: a 0 a;');
- });
-
- it('arguments', () => {
- const g = parser('lg(top, "red, black", rgb(0, 0, 0) 10%)').elements[0].value![0] as CSSFunction;
- equal(g.name, 'lg');
- equal(g.arguments.length, 3);
+const parse = (abbr: string) => parser(tokenizer(abbr));
+const property = (abbr: string) => parse(abbr)[0];
- let arg = g.arguments[0];
- equal(arg.items.length, 1);
- equal(arg.items[0].type, 'CSSKeyword');
- equal((arg.items[0] as CSSKeyword).value, 'top');
-
- arg = g.arguments[1];
- equal(arg.items.length, 1);
- equal(arg.items[0].type, 'CSSString');
- equal((arg.items[0] as CSSString).value, '"red, black"');
-
- arg = g.arguments[2];
- equal(arg.items.length, 2);
- equal(arg.items[0].type, 'CSSFunction');
-
- const args = (arg.items[0] as CSSFunction).arguments;
- equal(args.length, 3);
- equal(args[0].items[0].type, 'CSSNumber');
- equal((args[0].items[0] as CSSNumber).value, 0);
- });
-
- it('important/exclamation', () => {
- equal(parse('!'), '!;');
- equal(parse('p!'), 'p: !;');
- equal(parse('p10!'), 'p: 10!;');
- });
-
- it('mixed', () => {
- equal(parse('bd1-s#fc0'), 'bd: 1 s #ffcc00;');
- equal(parse('bd#fc0-1'), 'bd: #ffcc00 1;');
- equal(parse('p0+m0'), 'p: 0;m: 0;');
- equal(parse('p0!+m0!'), 'p: 0!;m: 0!;');
- });
-
- it('embedded variables', () => {
- equal(parse('foo$bar'), 'foo: $bar;');
- equal(parse('foo$bar-2'), 'foo: $bar-2;');
- equal(parse('foo$bar@bam'), 'foo: $bar @bam;');
+describe('CSS Abbreviation parser', () => {
+ it.only('basic', () => {
+ console.log(property('p10!'));
});
});
| 9 | Working parser implementation | 88 | .ts | ts | mit | emmetio/emmet |
10070893 | <NME> parser.ts
<BEF> import { equal, throws } from 'assert';
import parser, { CSSFunction, CSSKeyword, CSSString, CSSNumber } from '../src/index';
import stringify from './assets/stringify';
describe('CSS Abbreviation parser', () => {
const parse = (abbr: string) => stringify(parser(abbr));
it('numeric units', () => {
equal(parse('p10'), 'p: 10;');
equal(parse('p-10'), 'p: -10;');
equal(parse('p-10-'), 'p: -10;');
equal(parse('p-10-20'), 'p: -10 20;');
equal(parse('p-10--20'), 'p: -10 -20;');
equal(parse('p-10-20--30'), 'p: -10 20 -30;');
equal(parse('p-10p-20--30'), 'p: -10p -20 -30;');
equal(parse('p-10%-20--30'), 'p: -10% -20 -30;');
equal(parse('p.5'), 'p: 0.5;');
equal(parse('p-.5'), 'p: -0.5;');
equal(parse('p.1.2.3'), 'p: 0.1 0.2 0.3;');
equal(parse('p.1-.2.3'), 'p: 0.1 0.2 0.3;');
equal(parse('p.1--.2.3'), 'p: 0.1 -0.2 0.3;');
equal(parse('10'), '10;');
equal(parse('.1'), '0.1;');
throws(() => parse('.foo'), /Unexpected character at 1/);
});
it('color', () => {
equal(parse('c#'), 'c: #000000;');
equal(parse('c#1'), 'c: #111111;');
equal(parse('c#f'), 'c: #ffffff;');
equal(parse('c#a#b#c'), 'c: #aaaaaa #bbbbbb #cccccc;');
equal(parse('c#af'), 'c: #afafaf;');
equal(parse('c#fc0'), 'c: #ffcc00;');
equal(parse('c#11.5'), 'c: rgba(17, 17, 17, 0.5);');
equal(parse('c#.99'), 'c: rgba(0, 0, 0, 0.99);');
equal(parse('c#t'), 'c: transparent;');
});
it('keywords', () => {
equal(parse('m:a'), 'm: a;');
equal(parse('m-a'), 'm: a;');
equal(parse('m-abc'), 'm: abc;');
equal(parse('m-a0'), 'm: a 0;');
equal(parse('m-a0-a'), 'm: a 0 a;');
});
it('arguments', () => {
const g = parser('lg(top, "red, black", rgb(0, 0, 0) 10%)').elements[0].value![0] as CSSFunction;
equal(g.name, 'lg');
equal(g.arguments.length, 3);
let arg = g.arguments[0];
equal(arg.items.length, 1);
equal(arg.items[0].type, 'CSSKeyword');
equal((arg.items[0] as CSSKeyword).value, 'top');
arg = g.arguments[1];
equal(arg.items.length, 1);
equal(arg.items[0].type, 'CSSString');
equal((arg.items[0] as CSSString).value, '"red, black"');
arg = g.arguments[2];
equal(arg.items.length, 2);
equal(arg.items[0].type, 'CSSFunction');
const args = (arg.items[0] as CSSFunction).arguments;
equal(args.length, 3);
equal(args[0].items[0].type, 'CSSNumber');
equal((args[0].items[0] as CSSNumber).value, 0);
});
it('important/exclamation', () => {
equal(parse('!'), '!;');
equal(parse('p!'), 'p: !;');
equal(parse('p10!'), 'p: 10!;');
});
it('mixed', () => {
equal(parse('bd1-s#fc0'), 'bd: 1 s #ffcc00;');
equal(parse('bd#fc0-1'), 'bd: #ffcc00 1;');
equal(parse('p0+m0'), 'p: 0;m: 0;');
equal(parse('p0!+m0!'), 'p: 0!;m: 0!;');
});
it('embedded variables', () => {
equal(parse('foo$bar'), 'foo: $bar;');
equal(parse('foo$bar-2'), 'foo: $bar-2;');
equal(parse('foo$bar@bam'), 'foo: $bar @bam;');
});
});
equal(expand('p.5'), 'p: 0.5;');
equal(expand('p-.5'), 'p: -0.5;');
equal(expand('p.1.2.3'), 'p: 0.1 0.2 0.3;');
equal(expand('p.1-.2.3'), 'p: 0.1 0.2 0.3;');
equal(expand('10'), '?: 10;');
equal(expand('.1'), '?: 0.1;');
equal(expand('lh1.'), 'lh: 1;');
});
it('color', () => {
equal(expand('c#'), 'c: #000000;');
equal(expand('c#1'), 'c: #111111;');
equal(expand('c#f'), 'c: #ffffff;');
equal(expand('c#a#b#c'), 'c: #aaaaaa #bbbbbb #cccccc;');
equal(expand('c#af'), 'c: #afafaf;');
equal(expand('c#fc0'), 'c: #ffcc00;');
equal(expand('c#11.5'), 'c: rgba(17, 17, 17, 0.5);');
equal(expand('c#.99'), 'c: rgba(0, 0, 0, 0.99);');
equal(expand('c#t'), 'c: transparent;');
});
it('keywords', () => {
equal(expand('m:a'), 'm: a;');
equal(expand('m-a'), 'm: a;');
equal(expand('m-abc'), 'm: abc;');
equal(expand('m-a0'), 'm: a 0;');
equal(expand('m-a0-a'), 'm: a 0 a;');
});
it('functions', () => {
equal(expand('bg-lg(top, "red, black",rgb(0, 0, 0) 10%)'), 'bg: lg(top, "red, black", rgb(0, 0, 0) 10%);');
equal(expand('lg(top, "red, black",rgb(0, 0, 0) 10%)'), '?: lg(top, "red, black", rgb(0, 0, 0) 10%);');
});
it('mixed', () => {
equal(expand('bd1-s#fc0'), 'bd: 1 s #ffcc00;');
equal(expand('bd#fc0-1'), 'bd: #ffcc00 1;');
equal(expand('p0+m0'), 'p: 0;m: 0;');
equal(expand('p0!+m0!'), 'p: 0 !important;m: 0 !important;');
});
it('embedded variables', () => {
equal(expand('foo$bar'), 'foo: $bar;');
equal(expand('foo$bar-2'), 'foo: $bar-2;');
equal(expand('foo$bar@bam'), 'foo: $bar @bam;');
});
it('parse value', () => {
const opt: ParseOptions = { value: true };
let prop = parse('${1:foo} ${2:bar}, baz', opt)[0];
equal(prop.name, undefined);
equal(prop.value.length, 2);
equal(prop.value[0].value.length, 2);
equal(prop.value[0].value[0].type, 'Field');
prop = parse('scale3d(${1:x}, ${2:y}, ${3:z})', opt)[0];
const fn = prop.value[0].value[0] as FunctionCall;
equal(prop.value.length, 1);
equal(prop.value[0].value.length, 1);
equal(fn.type, 'FunctionCall');
equal(fn.name, 'scale3d');
prop = parse('repeat(2,auto) / repeat(auto-fit, minmax(250px, 1fr))', opt)[0];
equal(prop.value.length, 1);
});
it('errors', () => {
throws(() => expand('p10 '), /Unexpected token/);
});
});
<MSG> Working parser implementation
<DFF> @@ -1,92 +1,13 @@
-import { equal, throws } from 'assert';
-import parser, { CSSFunction, CSSKeyword, CSSString, CSSNumber } from '../src/index';
-import stringify from './assets/stringify';
+// import { equal, throws } from 'assert';
+import parser from '../src/parser';
+import tokenizer from '../src/tokenizer';
+// import stringify from './assets/stringify';
-describe('CSS Abbreviation parser', () => {
- const parse = (abbr: string) => stringify(parser(abbr));
-
- it('numeric units', () => {
- equal(parse('p10'), 'p: 10;');
- equal(parse('p-10'), 'p: -10;');
- equal(parse('p-10-'), 'p: -10;');
- equal(parse('p-10-20'), 'p: -10 20;');
- equal(parse('p-10--20'), 'p: -10 -20;');
- equal(parse('p-10-20--30'), 'p: -10 20 -30;');
- equal(parse('p-10p-20--30'), 'p: -10p -20 -30;');
- equal(parse('p-10%-20--30'), 'p: -10% -20 -30;');
-
- equal(parse('p.5'), 'p: 0.5;');
- equal(parse('p-.5'), 'p: -0.5;');
- equal(parse('p.1.2.3'), 'p: 0.1 0.2 0.3;');
- equal(parse('p.1-.2.3'), 'p: 0.1 0.2 0.3;');
- equal(parse('p.1--.2.3'), 'p: 0.1 -0.2 0.3;');
-
- equal(parse('10'), '10;');
- equal(parse('.1'), '0.1;');
- throws(() => parse('.foo'), /Unexpected character at 1/);
- });
-
- it('color', () => {
- equal(parse('c#'), 'c: #000000;');
- equal(parse('c#1'), 'c: #111111;');
- equal(parse('c#f'), 'c: #ffffff;');
- equal(parse('c#a#b#c'), 'c: #aaaaaa #bbbbbb #cccccc;');
- equal(parse('c#af'), 'c: #afafaf;');
- equal(parse('c#fc0'), 'c: #ffcc00;');
- equal(parse('c#11.5'), 'c: rgba(17, 17, 17, 0.5);');
- equal(parse('c#.99'), 'c: rgba(0, 0, 0, 0.99);');
- equal(parse('c#t'), 'c: transparent;');
- });
-
- it('keywords', () => {
- equal(parse('m:a'), 'm: a;');
- equal(parse('m-a'), 'm: a;');
- equal(parse('m-abc'), 'm: abc;');
- equal(parse('m-a0'), 'm: a 0;');
- equal(parse('m-a0-a'), 'm: a 0 a;');
- });
-
- it('arguments', () => {
- const g = parser('lg(top, "red, black", rgb(0, 0, 0) 10%)').elements[0].value![0] as CSSFunction;
- equal(g.name, 'lg');
- equal(g.arguments.length, 3);
+const parse = (abbr: string) => parser(tokenizer(abbr));
+const property = (abbr: string) => parse(abbr)[0];
- let arg = g.arguments[0];
- equal(arg.items.length, 1);
- equal(arg.items[0].type, 'CSSKeyword');
- equal((arg.items[0] as CSSKeyword).value, 'top');
-
- arg = g.arguments[1];
- equal(arg.items.length, 1);
- equal(arg.items[0].type, 'CSSString');
- equal((arg.items[0] as CSSString).value, '"red, black"');
-
- arg = g.arguments[2];
- equal(arg.items.length, 2);
- equal(arg.items[0].type, 'CSSFunction');
-
- const args = (arg.items[0] as CSSFunction).arguments;
- equal(args.length, 3);
- equal(args[0].items[0].type, 'CSSNumber');
- equal((args[0].items[0] as CSSNumber).value, 0);
- });
-
- it('important/exclamation', () => {
- equal(parse('!'), '!;');
- equal(parse('p!'), 'p: !;');
- equal(parse('p10!'), 'p: 10!;');
- });
-
- it('mixed', () => {
- equal(parse('bd1-s#fc0'), 'bd: 1 s #ffcc00;');
- equal(parse('bd#fc0-1'), 'bd: #ffcc00 1;');
- equal(parse('p0+m0'), 'p: 0;m: 0;');
- equal(parse('p0!+m0!'), 'p: 0!;m: 0!;');
- });
-
- it('embedded variables', () => {
- equal(parse('foo$bar'), 'foo: $bar;');
- equal(parse('foo$bar-2'), 'foo: $bar-2;');
- equal(parse('foo$bar@bam'), 'foo: $bar @bam;');
+describe('CSS Abbreviation parser', () => {
+ it.only('basic', () => {
+ console.log(property('p10!'));
});
});
| 9 | Working parser implementation | 88 | .ts | ts | mit | emmetio/emmet |
10070894 | <NME> .rubocop_todo.yml
<BEF> ADDFILE
<MSG> Merge pull request #594 from splitrb/update-rubocop-config
Update rubocop.yml config
<DFF> @@ -0,0 +1,699 @@
+# This configuration was generated by
+# `rubocop --auto-gen-config`
+# on 2019-10-21 18:09:14 -0300 using RuboCop version 0.75.1.
+# The point is for the user to remove these configuration records
+# one by one as the offenses are removed from the code base.
+# Note that changes in the inspected code, or installation of new
+# versions of RuboCop, may require this file to be generated again.
+
+# Offense count: 4
+# Cop supports --auto-correct.
+# Configuration parameters: TreatCommentsAsGroupSeparators, Include.
+# Include: **/*.gemspec
+Gemspec/OrderedDependencies:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 1
+# Configuration parameters: Include.
+# Include: **/*.gemspec,
+Gemspec/RequiredRubyVersion:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: with_first_argument, with_fixed_indentation
+Layout/AlignArguments:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/experiment_catalog.rb'
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: AllowMultipleStyles, EnforcedHashRocketStyle, EnforcedColonStyle, EnforcedLastArgumentHashStyle.
+# SupportedHashRocketStyles: key, separator, table
+# SupportedColonStyles: key, separator, table
+# SupportedLastArgumentHashStyles: always_inspect, always_ignore, ignore_implicit, ignore_explicit
+Layout/AlignHash:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Layout/CommentIndentation:
+ Exclude:
+ - 'lib/split/experiment.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+Layout/ElseAlignment:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 20
+# Cop supports --auto-correct.
+Layout/EmptyLineAfterGuardClause:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/algorithms/weighted_sample.rb'
+ - 'lib/split/alternative.rb'
+ - 'lib/split/combined_experiments_helper.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 25
+# Cop supports --auto-correct.
+Layout/EmptyLineAfterMagicComment:
+ Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: AllowAdjacentOneLineDefs, NumberOfEmptyLines.
+Layout/EmptyLineBetweenDefs:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Layout/EmptyLines:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 8
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: empty_lines, empty_lines_except_namespace, empty_lines_special, no_empty_lines, beginning_only, ending_only
+Layout/EmptyLinesAroundClassBody:
+ Exclude:
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+ - 'lib/split/persistence/session_adapter.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Layout/EmptyLinesAroundMethodBody:
+ Exclude:
+ - 'lib/split/dashboard/helpers.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: empty_lines, empty_lines_except_namespace, empty_lines_special, no_empty_lines
+Layout/EmptyLinesAroundModuleBody:
+ Exclude:
+ - 'lib/split/encapsulated_helper.rb'
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyleAlignWith, AutoCorrect, Severity.
+# SupportedStylesAlignWith: keyword, variable, start_of_line
+Layout/EndAlignment:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 4
+# Cop supports --auto-correct.
+# Configuration parameters: AllowForAlignment, AllowBeforeTrailingComments, ForceEqualSignAlignment.
+Layout/ExtraSpacing:
+ Exclude:
+ - 'lib/split/algorithms/whiplash.rb'
+ - 'lib/split/dashboard.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: special_inside_parentheses, consistent, align_braces
+Layout/IndentFirstHashElement:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: Width, IgnoredPatterns.
+Layout/IndentationWidth:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 10
+# Cop supports --auto-correct.
+Layout/SpaceAfterComma:
+ Exclude:
+ - 'lib/split/algorithms/weighted_sample.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/encapsulated_helper.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: space, no_space
+Layout/SpaceAroundEqualsInParameterDefault:
+ Exclude:
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/persistence/dual_adapter.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 24
+# Cop supports --auto-correct.
+# Configuration parameters: AllowForAlignment.
+Layout/SpaceAroundOperators:
+ Exclude:
+ - 'lib/split/algorithms/whiplash.rb'
+ - 'lib/split/alternative.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 14
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces.
+# SupportedStyles: space, no_space
+# SupportedStylesForEmptyBraces: space, no_space
+Layout/SpaceBeforeBlockBraces:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBrackets.
+# SupportedStyles: space, no_space, compact
+# SupportedStylesForEmptyBrackets: space, no_space
+Layout/SpaceInsideArrayLiteralBrackets:
+ Exclude:
+ - 'lib/split/dashboard/helpers.rb'
+
+# Offense count: 31
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces, SpaceBeforeBlockParameters.
+# SupportedStyles: space, no_space
+# SupportedStylesForEmptyBraces: space, no_space
+Layout/SpaceInsideBlockBraces:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 10
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces.
+# SupportedStyles: space, no_space, compact
+# SupportedStylesForEmptyBraces: space, no_space
+Layout/SpaceInsideHashLiteralBraces:
+ Exclude:
+ - 'lib/split/experiment.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: final_newline, final_blank_line
+Layout/TrailingBlankLines:
+ Exclude:
+ - 'Rakefile'
+
+# Offense count: 8
+# Configuration parameters: AllowSafeAssignment.
+Lint/AssignmentInCondition:
+ Exclude:
+ - 'lib/split/combined_experiments_helper.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+ - 'lib/split/persistence/dual_adapter.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+
+# Offense count: 4
+# Cop supports --auto-correct.
+# Configuration parameters: IgnoreEmptyBlocks, AllowUnusedKeywordArguments.
+Lint/UnusedBlockArgument:
+ Exclude:
+ - 'lib/split/algorithms/block_randomization.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/engine.rb'
+ - 'lib/split/metric.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: AllowUnusedKeywordArguments, IgnoreEmptyMethods.
+Lint/UnusedMethodArgument:
+ Exclude:
+ - 'lib/split/dashboard/helpers.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+
+# Offense count: 1
+Lint/UselessAssignment:
+ Exclude:
+ - 'lib/split/goals_collection.rb'
+
+# Offense count: 19
+Metrics/AbcSize:
+ Max: 47
+
+# Offense count: 3
+# Configuration parameters: CountComments.
+Metrics/ClassLength:
+ Max: 377
+
+# Offense count: 6
+Metrics/CyclomaticComplexity:
+ Max: 14
+
+# Offense count: 23
+# Configuration parameters: CountComments, ExcludedMethods.
+Metrics/MethodLength:
+ Max: 66
+
+# Offense count: 1
+# Configuration parameters: CountComments.
+Metrics/ModuleLength:
+ Max: 134
+
+# Offense count: 8
+Metrics/PerceivedComplexity:
+ Max: 16
+
+# Offense count: 4
+Naming/AccessorMethodName:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+
+# Offense count: 1
+Naming/BinaryOperatorParameterName:
+ Exclude:
+ - 'lib/split/experiment.rb'
+
+# Offense count: 4
+# Configuration parameters: NamePrefix, NamePrefixBlacklist, NameWhitelist, MethodDefinitionMacros.
+# NamePrefix: is_, has_, have_
+# NamePrefixBlacklist: is_, has_, have_
+# NameWhitelist: is_a?
+# MethodDefinitionMacros: define_method, define_singleton_method
+Naming/PredicateName:
+ Exclude:
+ - 'spec/**/*'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/helper.rb'
+
+# Offense count: 5
+# Configuration parameters: MinNameLength, AllowNamesEndingInNumbers, AllowedNames, ForbiddenNames.
+# AllowedNames: io, id, to, by, on, in, at, ip, db
+Naming/UncommunicativeMethodParamName:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 6
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: snake_case, normalcase, non_integer
+Naming/VariableNumber:
+ Exclude:
+ - 'lib/split/zscore.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: always, conditionals
+Style/AndOr:
+ Exclude:
+ - 'lib/split/experiment_catalog.rb'
+
+# Offense count: 2
+# Configuration parameters: AllowedChars.
+Style/AsciiComments:
+ Exclude:
+ - 'lib/split/zscore.rb'
+
+# Offense count: 4
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: percent_q, bare_percent
+Style/BarePercentLiterals:
+ Exclude:
+ - 'lib/split/dashboard/pagination_helpers.rb'
+
+# Offense count: 8
+Style/CaseEquality:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/metric.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: is_a?, kind_of?
+Style/ClassCheck:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/ColonMethodCall:
+ Exclude:
+ - 'lib/split/combined_experiments_helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: Keywords.
+# Keywords: TODO, FIXME, OPTIMIZE, HACK, REVIEW
+Style/CommentAnnotation:
+ Exclude:
+ - 'lib/split/configuration.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SingleLineConditionsOnly, IncludeTernaryExpressions.
+# SupportedStyles: assign_to_condition, assign_inside_condition
+Style/ConditionalAssignment:
+ Exclude:
+ - 'lib/split/dashboard.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/DefWithParentheses:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 29
+Style/Documentation:
+ Enabled: false
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: empty, nil, both
+Style/EmptyElse:
+ Exclude:
+ - 'lib/split/experiment.rb'
+ - 'lib/split/metric.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/Encoding:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/ExpandPathArguments:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 13
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: always, never
+Style/FrozenStringLiteralComment:
+ Exclude:
+ - 'Appraisals'
+ - 'Gemfile'
+ - 'Rakefile'
+ - 'gemfiles/4.2.gemfile'
+ - 'gemfiles/5.0.gemfile'
+ - 'gemfiles/5.1.gemfile'
+ - 'gemfiles/5.2.gemfile'
+ - 'gemfiles/6.0.gemfile'
+ - 'lib/split/algorithms/block_randomization.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/redis_interface.rb'
+ - 'lib/split/user.rb'
+ - 'split.gemspec'
+
+# Offense count: 13
+# Configuration parameters: MinBodyLength.
+Style/GuardClause:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/persistence/dual_adapter.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 25
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, UseHashRocketsWithSymbolValues, PreferHashRocketsForNonAlnumEndingSymbols.
+# SupportedStyles: ruby19, hash_rockets, no_mixed_keys, ruby19_no_mixed_keys
+Style/HashSyntax:
+ Exclude:
+ - 'Rakefile'
+ - 'lib/split.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/persistence.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+
+# Offense count: 4
+Style/IdenticalConditionalBranches:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+
+# Offense count: 14
+# Cop supports --auto-correct.
+Style/IfUnlessModifier:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: require_parentheses, require_no_parentheses, require_no_parentheses_except_multiline
+Style/MethodDefParentheses:
+ Exclude:
+ - 'lib/split/configuration.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, Autocorrect.
+# SupportedStyles: module_function, extend_self
+Style/ModuleFunction:
+ Exclude:
+ - 'lib/split.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: literals, strict
+Style/MutableConstant:
+ Exclude:
+ - 'lib/split/experiment.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: both, prefix, postfix
+Style/NegatedIf:
+ Exclude:
+ - 'lib/split/user.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: IncludeSemanticChanges.
+Style/NonNilCheck:
+ Exclude:
+ - 'lib/split/configuration.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/Not:
+ Exclude:
+ - 'lib/split/experiment_catalog.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: Strict.
+Style/NumericLiterals:
+ MinDigits: 9
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: AutoCorrect, EnforcedStyle, IgnoredMethods.
+# SupportedStyles: predicate, comparison
+Style/NumericPredicate:
+ Exclude:
+ - 'spec/**/*'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Style/ParallelAssignment:
+ Exclude:
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: short, verbose
+Style/PreferredHashMethods:
+ Exclude:
+ - 'lib/split/configuration.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: compact, exploded
+Style/RaiseArgs:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+
+# Offense count: 6
+# Cop supports --auto-correct.
+Style/RedundantParentheses:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 11
+# Cop supports --auto-correct.
+# Configuration parameters: AllowMultipleReturnValues.
+Style/RedundantReturn:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 21
+# Cop supports --auto-correct.
+Style/RedundantSelf:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/alternative.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/extensions/string.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/persistence/dual_adapter.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Style/RescueModifier:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/configuration.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: implicit, explicit
+Style/RescueStandardError:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/helper.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: ConvertCodeThatCanStartToReturnNil, Whitelist.
+# Whitelist: present?, blank?, presence, try, try!
+Style/SafeNavigation:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: AllowAsExpressionSeparator.
+Style/Semicolon:
+ Exclude:
+ - 'lib/split/algorithms/whiplash.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: .
+# SupportedStyles: use_perl_names, use_english_names
+Style/SpecialGlobalVars:
+ EnforcedStyle: use_perl_names
+
+# Offense count: 86
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, ConsistentQuotesInMultiline.
+# SupportedStyles: single_quotes, double_quotes
+Style/StringLiterals:
+ Enabled: false
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: IgnoredMethods.
+# IgnoredMethods: respond_to, define_method
+Style/SymbolProc:
+ Exclude:
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/metric.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: AllowNamedUnderscoreVariables.
+Style/TrailingUnderscoreVariable:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/ZeroLengthPredicate:
+ Exclude:
+ - 'lib/split/user.rb'
+
+# Offense count: 74
+# Cop supports --auto-correct.
+# Configuration parameters: AutoCorrect, AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, IgnoredPatterns.
+# URISchemes: http, https
+Metrics/LineLength:
+ Max: 183
| 699 | Merge pull request #594 from splitrb/update-rubocop-config | 0 | .yml | rubocop_todo | mit | splitrb/split |
10070895 | <NME> .rubocop_todo.yml
<BEF> ADDFILE
<MSG> Merge pull request #594 from splitrb/update-rubocop-config
Update rubocop.yml config
<DFF> @@ -0,0 +1,699 @@
+# This configuration was generated by
+# `rubocop --auto-gen-config`
+# on 2019-10-21 18:09:14 -0300 using RuboCop version 0.75.1.
+# The point is for the user to remove these configuration records
+# one by one as the offenses are removed from the code base.
+# Note that changes in the inspected code, or installation of new
+# versions of RuboCop, may require this file to be generated again.
+
+# Offense count: 4
+# Cop supports --auto-correct.
+# Configuration parameters: TreatCommentsAsGroupSeparators, Include.
+# Include: **/*.gemspec
+Gemspec/OrderedDependencies:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 1
+# Configuration parameters: Include.
+# Include: **/*.gemspec,
+Gemspec/RequiredRubyVersion:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: with_first_argument, with_fixed_indentation
+Layout/AlignArguments:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/experiment_catalog.rb'
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: AllowMultipleStyles, EnforcedHashRocketStyle, EnforcedColonStyle, EnforcedLastArgumentHashStyle.
+# SupportedHashRocketStyles: key, separator, table
+# SupportedColonStyles: key, separator, table
+# SupportedLastArgumentHashStyles: always_inspect, always_ignore, ignore_implicit, ignore_explicit
+Layout/AlignHash:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Layout/CommentIndentation:
+ Exclude:
+ - 'lib/split/experiment.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+Layout/ElseAlignment:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 20
+# Cop supports --auto-correct.
+Layout/EmptyLineAfterGuardClause:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/algorithms/weighted_sample.rb'
+ - 'lib/split/alternative.rb'
+ - 'lib/split/combined_experiments_helper.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 25
+# Cop supports --auto-correct.
+Layout/EmptyLineAfterMagicComment:
+ Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: AllowAdjacentOneLineDefs, NumberOfEmptyLines.
+Layout/EmptyLineBetweenDefs:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Layout/EmptyLines:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 8
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: empty_lines, empty_lines_except_namespace, empty_lines_special, no_empty_lines, beginning_only, ending_only
+Layout/EmptyLinesAroundClassBody:
+ Exclude:
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+ - 'lib/split/persistence/session_adapter.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Layout/EmptyLinesAroundMethodBody:
+ Exclude:
+ - 'lib/split/dashboard/helpers.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: empty_lines, empty_lines_except_namespace, empty_lines_special, no_empty_lines
+Layout/EmptyLinesAroundModuleBody:
+ Exclude:
+ - 'lib/split/encapsulated_helper.rb'
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyleAlignWith, AutoCorrect, Severity.
+# SupportedStylesAlignWith: keyword, variable, start_of_line
+Layout/EndAlignment:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 4
+# Cop supports --auto-correct.
+# Configuration parameters: AllowForAlignment, AllowBeforeTrailingComments, ForceEqualSignAlignment.
+Layout/ExtraSpacing:
+ Exclude:
+ - 'lib/split/algorithms/whiplash.rb'
+ - 'lib/split/dashboard.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: special_inside_parentheses, consistent, align_braces
+Layout/IndentFirstHashElement:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: Width, IgnoredPatterns.
+Layout/IndentationWidth:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 10
+# Cop supports --auto-correct.
+Layout/SpaceAfterComma:
+ Exclude:
+ - 'lib/split/algorithms/weighted_sample.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/encapsulated_helper.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: space, no_space
+Layout/SpaceAroundEqualsInParameterDefault:
+ Exclude:
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/persistence/dual_adapter.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 24
+# Cop supports --auto-correct.
+# Configuration parameters: AllowForAlignment.
+Layout/SpaceAroundOperators:
+ Exclude:
+ - 'lib/split/algorithms/whiplash.rb'
+ - 'lib/split/alternative.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 14
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces.
+# SupportedStyles: space, no_space
+# SupportedStylesForEmptyBraces: space, no_space
+Layout/SpaceBeforeBlockBraces:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBrackets.
+# SupportedStyles: space, no_space, compact
+# SupportedStylesForEmptyBrackets: space, no_space
+Layout/SpaceInsideArrayLiteralBrackets:
+ Exclude:
+ - 'lib/split/dashboard/helpers.rb'
+
+# Offense count: 31
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces, SpaceBeforeBlockParameters.
+# SupportedStyles: space, no_space
+# SupportedStylesForEmptyBraces: space, no_space
+Layout/SpaceInsideBlockBraces:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 10
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces.
+# SupportedStyles: space, no_space, compact
+# SupportedStylesForEmptyBraces: space, no_space
+Layout/SpaceInsideHashLiteralBraces:
+ Exclude:
+ - 'lib/split/experiment.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: final_newline, final_blank_line
+Layout/TrailingBlankLines:
+ Exclude:
+ - 'Rakefile'
+
+# Offense count: 8
+# Configuration parameters: AllowSafeAssignment.
+Lint/AssignmentInCondition:
+ Exclude:
+ - 'lib/split/combined_experiments_helper.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+ - 'lib/split/persistence/dual_adapter.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+
+# Offense count: 4
+# Cop supports --auto-correct.
+# Configuration parameters: IgnoreEmptyBlocks, AllowUnusedKeywordArguments.
+Lint/UnusedBlockArgument:
+ Exclude:
+ - 'lib/split/algorithms/block_randomization.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/engine.rb'
+ - 'lib/split/metric.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: AllowUnusedKeywordArguments, IgnoreEmptyMethods.
+Lint/UnusedMethodArgument:
+ Exclude:
+ - 'lib/split/dashboard/helpers.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+
+# Offense count: 1
+Lint/UselessAssignment:
+ Exclude:
+ - 'lib/split/goals_collection.rb'
+
+# Offense count: 19
+Metrics/AbcSize:
+ Max: 47
+
+# Offense count: 3
+# Configuration parameters: CountComments.
+Metrics/ClassLength:
+ Max: 377
+
+# Offense count: 6
+Metrics/CyclomaticComplexity:
+ Max: 14
+
+# Offense count: 23
+# Configuration parameters: CountComments, ExcludedMethods.
+Metrics/MethodLength:
+ Max: 66
+
+# Offense count: 1
+# Configuration parameters: CountComments.
+Metrics/ModuleLength:
+ Max: 134
+
+# Offense count: 8
+Metrics/PerceivedComplexity:
+ Max: 16
+
+# Offense count: 4
+Naming/AccessorMethodName:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+
+# Offense count: 1
+Naming/BinaryOperatorParameterName:
+ Exclude:
+ - 'lib/split/experiment.rb'
+
+# Offense count: 4
+# Configuration parameters: NamePrefix, NamePrefixBlacklist, NameWhitelist, MethodDefinitionMacros.
+# NamePrefix: is_, has_, have_
+# NamePrefixBlacklist: is_, has_, have_
+# NameWhitelist: is_a?
+# MethodDefinitionMacros: define_method, define_singleton_method
+Naming/PredicateName:
+ Exclude:
+ - 'spec/**/*'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/helper.rb'
+
+# Offense count: 5
+# Configuration parameters: MinNameLength, AllowNamesEndingInNumbers, AllowedNames, ForbiddenNames.
+# AllowedNames: io, id, to, by, on, in, at, ip, db
+Naming/UncommunicativeMethodParamName:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 6
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: snake_case, normalcase, non_integer
+Naming/VariableNumber:
+ Exclude:
+ - 'lib/split/zscore.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: always, conditionals
+Style/AndOr:
+ Exclude:
+ - 'lib/split/experiment_catalog.rb'
+
+# Offense count: 2
+# Configuration parameters: AllowedChars.
+Style/AsciiComments:
+ Exclude:
+ - 'lib/split/zscore.rb'
+
+# Offense count: 4
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: percent_q, bare_percent
+Style/BarePercentLiterals:
+ Exclude:
+ - 'lib/split/dashboard/pagination_helpers.rb'
+
+# Offense count: 8
+Style/CaseEquality:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/metric.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: is_a?, kind_of?
+Style/ClassCheck:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/ColonMethodCall:
+ Exclude:
+ - 'lib/split/combined_experiments_helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: Keywords.
+# Keywords: TODO, FIXME, OPTIMIZE, HACK, REVIEW
+Style/CommentAnnotation:
+ Exclude:
+ - 'lib/split/configuration.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SingleLineConditionsOnly, IncludeTernaryExpressions.
+# SupportedStyles: assign_to_condition, assign_inside_condition
+Style/ConditionalAssignment:
+ Exclude:
+ - 'lib/split/dashboard.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/DefWithParentheses:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 29
+Style/Documentation:
+ Enabled: false
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: empty, nil, both
+Style/EmptyElse:
+ Exclude:
+ - 'lib/split/experiment.rb'
+ - 'lib/split/metric.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/Encoding:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/ExpandPathArguments:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 13
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: always, never
+Style/FrozenStringLiteralComment:
+ Exclude:
+ - 'Appraisals'
+ - 'Gemfile'
+ - 'Rakefile'
+ - 'gemfiles/4.2.gemfile'
+ - 'gemfiles/5.0.gemfile'
+ - 'gemfiles/5.1.gemfile'
+ - 'gemfiles/5.2.gemfile'
+ - 'gemfiles/6.0.gemfile'
+ - 'lib/split/algorithms/block_randomization.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/redis_interface.rb'
+ - 'lib/split/user.rb'
+ - 'split.gemspec'
+
+# Offense count: 13
+# Configuration parameters: MinBodyLength.
+Style/GuardClause:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/persistence/dual_adapter.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 25
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, UseHashRocketsWithSymbolValues, PreferHashRocketsForNonAlnumEndingSymbols.
+# SupportedStyles: ruby19, hash_rockets, no_mixed_keys, ruby19_no_mixed_keys
+Style/HashSyntax:
+ Exclude:
+ - 'Rakefile'
+ - 'lib/split.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/persistence.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+
+# Offense count: 4
+Style/IdenticalConditionalBranches:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+
+# Offense count: 14
+# Cop supports --auto-correct.
+Style/IfUnlessModifier:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: require_parentheses, require_no_parentheses, require_no_parentheses_except_multiline
+Style/MethodDefParentheses:
+ Exclude:
+ - 'lib/split/configuration.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, Autocorrect.
+# SupportedStyles: module_function, extend_self
+Style/ModuleFunction:
+ Exclude:
+ - 'lib/split.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: literals, strict
+Style/MutableConstant:
+ Exclude:
+ - 'lib/split/experiment.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: both, prefix, postfix
+Style/NegatedIf:
+ Exclude:
+ - 'lib/split/user.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: IncludeSemanticChanges.
+Style/NonNilCheck:
+ Exclude:
+ - 'lib/split/configuration.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/Not:
+ Exclude:
+ - 'lib/split/experiment_catalog.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: Strict.
+Style/NumericLiterals:
+ MinDigits: 9
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: AutoCorrect, EnforcedStyle, IgnoredMethods.
+# SupportedStyles: predicate, comparison
+Style/NumericPredicate:
+ Exclude:
+ - 'spec/**/*'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Style/ParallelAssignment:
+ Exclude:
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: short, verbose
+Style/PreferredHashMethods:
+ Exclude:
+ - 'lib/split/configuration.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: compact, exploded
+Style/RaiseArgs:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+
+# Offense count: 6
+# Cop supports --auto-correct.
+Style/RedundantParentheses:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 11
+# Cop supports --auto-correct.
+# Configuration parameters: AllowMultipleReturnValues.
+Style/RedundantReturn:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 21
+# Cop supports --auto-correct.
+Style/RedundantSelf:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/alternative.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/extensions/string.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/persistence/dual_adapter.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Style/RescueModifier:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/configuration.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: implicit, explicit
+Style/RescueStandardError:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/helper.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: ConvertCodeThatCanStartToReturnNil, Whitelist.
+# Whitelist: present?, blank?, presence, try, try!
+Style/SafeNavigation:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: AllowAsExpressionSeparator.
+Style/Semicolon:
+ Exclude:
+ - 'lib/split/algorithms/whiplash.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: .
+# SupportedStyles: use_perl_names, use_english_names
+Style/SpecialGlobalVars:
+ EnforcedStyle: use_perl_names
+
+# Offense count: 86
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, ConsistentQuotesInMultiline.
+# SupportedStyles: single_quotes, double_quotes
+Style/StringLiterals:
+ Enabled: false
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: IgnoredMethods.
+# IgnoredMethods: respond_to, define_method
+Style/SymbolProc:
+ Exclude:
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/metric.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: AllowNamedUnderscoreVariables.
+Style/TrailingUnderscoreVariable:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/ZeroLengthPredicate:
+ Exclude:
+ - 'lib/split/user.rb'
+
+# Offense count: 74
+# Cop supports --auto-correct.
+# Configuration parameters: AutoCorrect, AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, IgnoredPatterns.
+# URISchemes: http, https
+Metrics/LineLength:
+ Max: 183
| 699 | Merge pull request #594 from splitrb/update-rubocop-config | 0 | .yml | rubocop_todo | mit | splitrb/split |
10070896 | <NME> .rubocop_todo.yml
<BEF> ADDFILE
<MSG> Merge pull request #594 from splitrb/update-rubocop-config
Update rubocop.yml config
<DFF> @@ -0,0 +1,699 @@
+# This configuration was generated by
+# `rubocop --auto-gen-config`
+# on 2019-10-21 18:09:14 -0300 using RuboCop version 0.75.1.
+# The point is for the user to remove these configuration records
+# one by one as the offenses are removed from the code base.
+# Note that changes in the inspected code, or installation of new
+# versions of RuboCop, may require this file to be generated again.
+
+# Offense count: 4
+# Cop supports --auto-correct.
+# Configuration parameters: TreatCommentsAsGroupSeparators, Include.
+# Include: **/*.gemspec
+Gemspec/OrderedDependencies:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 1
+# Configuration parameters: Include.
+# Include: **/*.gemspec,
+Gemspec/RequiredRubyVersion:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: with_first_argument, with_fixed_indentation
+Layout/AlignArguments:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/experiment_catalog.rb'
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: AllowMultipleStyles, EnforcedHashRocketStyle, EnforcedColonStyle, EnforcedLastArgumentHashStyle.
+# SupportedHashRocketStyles: key, separator, table
+# SupportedColonStyles: key, separator, table
+# SupportedLastArgumentHashStyles: always_inspect, always_ignore, ignore_implicit, ignore_explicit
+Layout/AlignHash:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Layout/CommentIndentation:
+ Exclude:
+ - 'lib/split/experiment.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+Layout/ElseAlignment:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 20
+# Cop supports --auto-correct.
+Layout/EmptyLineAfterGuardClause:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/algorithms/weighted_sample.rb'
+ - 'lib/split/alternative.rb'
+ - 'lib/split/combined_experiments_helper.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 25
+# Cop supports --auto-correct.
+Layout/EmptyLineAfterMagicComment:
+ Enabled: false
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: AllowAdjacentOneLineDefs, NumberOfEmptyLines.
+Layout/EmptyLineBetweenDefs:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Layout/EmptyLines:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 8
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: empty_lines, empty_lines_except_namespace, empty_lines_special, no_empty_lines, beginning_only, ending_only
+Layout/EmptyLinesAroundClassBody:
+ Exclude:
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+ - 'lib/split/persistence/session_adapter.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Layout/EmptyLinesAroundMethodBody:
+ Exclude:
+ - 'lib/split/dashboard/helpers.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: empty_lines, empty_lines_except_namespace, empty_lines_special, no_empty_lines
+Layout/EmptyLinesAroundModuleBody:
+ Exclude:
+ - 'lib/split/encapsulated_helper.rb'
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyleAlignWith, AutoCorrect, Severity.
+# SupportedStylesAlignWith: keyword, variable, start_of_line
+Layout/EndAlignment:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 4
+# Cop supports --auto-correct.
+# Configuration parameters: AllowForAlignment, AllowBeforeTrailingComments, ForceEqualSignAlignment.
+Layout/ExtraSpacing:
+ Exclude:
+ - 'lib/split/algorithms/whiplash.rb'
+ - 'lib/split/dashboard.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: special_inside_parentheses, consistent, align_braces
+Layout/IndentFirstHashElement:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: Width, IgnoredPatterns.
+Layout/IndentationWidth:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 10
+# Cop supports --auto-correct.
+Layout/SpaceAfterComma:
+ Exclude:
+ - 'lib/split/algorithms/weighted_sample.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/encapsulated_helper.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: space, no_space
+Layout/SpaceAroundEqualsInParameterDefault:
+ Exclude:
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/persistence/dual_adapter.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 24
+# Cop supports --auto-correct.
+# Configuration parameters: AllowForAlignment.
+Layout/SpaceAroundOperators:
+ Exclude:
+ - 'lib/split/algorithms/whiplash.rb'
+ - 'lib/split/alternative.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 14
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces.
+# SupportedStyles: space, no_space
+# SupportedStylesForEmptyBraces: space, no_space
+Layout/SpaceBeforeBlockBraces:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBrackets.
+# SupportedStyles: space, no_space, compact
+# SupportedStylesForEmptyBrackets: space, no_space
+Layout/SpaceInsideArrayLiteralBrackets:
+ Exclude:
+ - 'lib/split/dashboard/helpers.rb'
+
+# Offense count: 31
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces, SpaceBeforeBlockParameters.
+# SupportedStyles: space, no_space
+# SupportedStylesForEmptyBraces: space, no_space
+Layout/SpaceInsideBlockBraces:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 10
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces.
+# SupportedStyles: space, no_space, compact
+# SupportedStylesForEmptyBraces: space, no_space
+Layout/SpaceInsideHashLiteralBraces:
+ Exclude:
+ - 'lib/split/experiment.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: final_newline, final_blank_line
+Layout/TrailingBlankLines:
+ Exclude:
+ - 'Rakefile'
+
+# Offense count: 8
+# Configuration parameters: AllowSafeAssignment.
+Lint/AssignmentInCondition:
+ Exclude:
+ - 'lib/split/combined_experiments_helper.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+ - 'lib/split/persistence/dual_adapter.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+
+# Offense count: 4
+# Cop supports --auto-correct.
+# Configuration parameters: IgnoreEmptyBlocks, AllowUnusedKeywordArguments.
+Lint/UnusedBlockArgument:
+ Exclude:
+ - 'lib/split/algorithms/block_randomization.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/engine.rb'
+ - 'lib/split/metric.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: AllowUnusedKeywordArguments, IgnoreEmptyMethods.
+Lint/UnusedMethodArgument:
+ Exclude:
+ - 'lib/split/dashboard/helpers.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+
+# Offense count: 1
+Lint/UselessAssignment:
+ Exclude:
+ - 'lib/split/goals_collection.rb'
+
+# Offense count: 19
+Metrics/AbcSize:
+ Max: 47
+
+# Offense count: 3
+# Configuration parameters: CountComments.
+Metrics/ClassLength:
+ Max: 377
+
+# Offense count: 6
+Metrics/CyclomaticComplexity:
+ Max: 14
+
+# Offense count: 23
+# Configuration parameters: CountComments, ExcludedMethods.
+Metrics/MethodLength:
+ Max: 66
+
+# Offense count: 1
+# Configuration parameters: CountComments.
+Metrics/ModuleLength:
+ Max: 134
+
+# Offense count: 8
+Metrics/PerceivedComplexity:
+ Max: 16
+
+# Offense count: 4
+Naming/AccessorMethodName:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+
+# Offense count: 1
+Naming/BinaryOperatorParameterName:
+ Exclude:
+ - 'lib/split/experiment.rb'
+
+# Offense count: 4
+# Configuration parameters: NamePrefix, NamePrefixBlacklist, NameWhitelist, MethodDefinitionMacros.
+# NamePrefix: is_, has_, have_
+# NamePrefixBlacklist: is_, has_, have_
+# NameWhitelist: is_a?
+# MethodDefinitionMacros: define_method, define_singleton_method
+Naming/PredicateName:
+ Exclude:
+ - 'spec/**/*'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/helper.rb'
+
+# Offense count: 5
+# Configuration parameters: MinNameLength, AllowNamesEndingInNumbers, AllowedNames, ForbiddenNames.
+# AllowedNames: io, id, to, by, on, in, at, ip, db
+Naming/UncommunicativeMethodParamName:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 6
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: snake_case, normalcase, non_integer
+Naming/VariableNumber:
+ Exclude:
+ - 'lib/split/zscore.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: always, conditionals
+Style/AndOr:
+ Exclude:
+ - 'lib/split/experiment_catalog.rb'
+
+# Offense count: 2
+# Configuration parameters: AllowedChars.
+Style/AsciiComments:
+ Exclude:
+ - 'lib/split/zscore.rb'
+
+# Offense count: 4
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: percent_q, bare_percent
+Style/BarePercentLiterals:
+ Exclude:
+ - 'lib/split/dashboard/pagination_helpers.rb'
+
+# Offense count: 8
+Style/CaseEquality:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/metric.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: is_a?, kind_of?
+Style/ClassCheck:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/ColonMethodCall:
+ Exclude:
+ - 'lib/split/combined_experiments_helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: Keywords.
+# Keywords: TODO, FIXME, OPTIMIZE, HACK, REVIEW
+Style/CommentAnnotation:
+ Exclude:
+ - 'lib/split/configuration.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, SingleLineConditionsOnly, IncludeTernaryExpressions.
+# SupportedStyles: assign_to_condition, assign_inside_condition
+Style/ConditionalAssignment:
+ Exclude:
+ - 'lib/split/dashboard.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/DefWithParentheses:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 29
+Style/Documentation:
+ Enabled: false
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: empty, nil, both
+Style/EmptyElse:
+ Exclude:
+ - 'lib/split/experiment.rb'
+ - 'lib/split/metric.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/Encoding:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/ExpandPathArguments:
+ Exclude:
+ - 'split.gemspec'
+
+# Offense count: 13
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: always, never
+Style/FrozenStringLiteralComment:
+ Exclude:
+ - 'Appraisals'
+ - 'Gemfile'
+ - 'Rakefile'
+ - 'gemfiles/4.2.gemfile'
+ - 'gemfiles/5.0.gemfile'
+ - 'gemfiles/5.1.gemfile'
+ - 'gemfiles/5.2.gemfile'
+ - 'gemfiles/6.0.gemfile'
+ - 'lib/split/algorithms/block_randomization.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/redis_interface.rb'
+ - 'lib/split/user.rb'
+ - 'split.gemspec'
+
+# Offense count: 13
+# Configuration parameters: MinBodyLength.
+Style/GuardClause:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/persistence/dual_adapter.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 25
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, UseHashRocketsWithSymbolValues, PreferHashRocketsForNonAlnumEndingSymbols.
+# SupportedStyles: ruby19, hash_rockets, no_mixed_keys, ruby19_no_mixed_keys
+Style/HashSyntax:
+ Exclude:
+ - 'Rakefile'
+ - 'lib/split.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/persistence.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+
+# Offense count: 4
+Style/IdenticalConditionalBranches:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+
+# Offense count: 14
+# Cop supports --auto-correct.
+Style/IfUnlessModifier:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/goals_collection.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: require_parentheses, require_no_parentheses, require_no_parentheses_except_multiline
+Style/MethodDefParentheses:
+ Exclude:
+ - 'lib/split/configuration.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, Autocorrect.
+# SupportedStyles: module_function, extend_self
+Style/ModuleFunction:
+ Exclude:
+ - 'lib/split.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: literals, strict
+Style/MutableConstant:
+ Exclude:
+ - 'lib/split/experiment.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: both, prefix, postfix
+Style/NegatedIf:
+ Exclude:
+ - 'lib/split/user.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: IncludeSemanticChanges.
+Style/NonNilCheck:
+ Exclude:
+ - 'lib/split/configuration.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/Not:
+ Exclude:
+ - 'lib/split/experiment_catalog.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: Strict.
+Style/NumericLiterals:
+ MinDigits: 9
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: AutoCorrect, EnforcedStyle, IgnoredMethods.
+# SupportedStyles: predicate, comparison
+Style/NumericPredicate:
+ Exclude:
+ - 'spec/**/*'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/trial.rb'
+ - 'lib/split/user.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Style/ParallelAssignment:
+ Exclude:
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/persistence/cookie_adapter.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: short, verbose
+Style/PreferredHashMethods:
+ Exclude:
+ - 'lib/split/configuration.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: compact, exploded
+Style/RaiseArgs:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+
+# Offense count: 6
+# Cop supports --auto-correct.
+Style/RedundantParentheses:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 11
+# Cop supports --auto-correct.
+# Configuration parameters: AllowMultipleReturnValues.
+Style/RedundantReturn:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/helper.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/zscore.rb'
+
+# Offense count: 21
+# Cop supports --auto-correct.
+Style/RedundantSelf:
+ Exclude:
+ - 'lib/split.rb'
+ - 'lib/split/alternative.rb'
+ - 'lib/split/configuration.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/extensions/string.rb'
+ - 'lib/split/metric.rb'
+ - 'lib/split/persistence/dual_adapter.rb'
+ - 'lib/split/persistence/redis_adapter.rb'
+ - 'lib/split/trial.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+Style/RescueModifier:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/configuration.rb'
+
+# Offense count: 5
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: implicit, explicit
+Style/RescueStandardError:
+ Exclude:
+ - 'lib/split/alternative.rb'
+ - 'lib/split/experiment.rb'
+ - 'lib/split/helper.rb'
+
+# Offense count: 2
+# Cop supports --auto-correct.
+# Configuration parameters: ConvertCodeThatCanStartToReturnNil, Whitelist.
+# Whitelist: present?, blank?, presence, try, try!
+Style/SafeNavigation:
+ Exclude:
+ - 'lib/split/configuration.rb'
+ - 'lib/split/helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: AllowAsExpressionSeparator.
+Style/Semicolon:
+ Exclude:
+ - 'lib/split/algorithms/whiplash.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: .
+# SupportedStyles: use_perl_names, use_english_names
+Style/SpecialGlobalVars:
+ EnforcedStyle: use_perl_names
+
+# Offense count: 86
+# Cop supports --auto-correct.
+# Configuration parameters: EnforcedStyle, ConsistentQuotesInMultiline.
+# SupportedStyles: single_quotes, double_quotes
+Style/StringLiterals:
+ Enabled: false
+
+# Offense count: 3
+# Cop supports --auto-correct.
+# Configuration parameters: IgnoredMethods.
+# IgnoredMethods: respond_to, define_method
+Style/SymbolProc:
+ Exclude:
+ - 'lib/split/experiment.rb'
+ - 'lib/split/experiment_catalog.rb'
+ - 'lib/split/metric.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+# Configuration parameters: AllowNamedUnderscoreVariables.
+Style/TrailingUnderscoreVariable:
+ Exclude:
+ - 'lib/split/helper.rb'
+
+# Offense count: 1
+# Cop supports --auto-correct.
+Style/ZeroLengthPredicate:
+ Exclude:
+ - 'lib/split/user.rb'
+
+# Offense count: 74
+# Cop supports --auto-correct.
+# Configuration parameters: AutoCorrect, AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, IgnoredPatterns.
+# URISchemes: http, https
+Metrics/LineLength:
+ Max: 183
| 699 | Merge pull request #594 from splitrb/update-rubocop-config | 0 | .yml | rubocop_todo | mit | splitrb/split |
10070897 | <NME> configuration.rb
<BEF> # frozen_string_literal: true
module Split
class Configuration
attr_accessor :ignore_ip_addresses
attr_accessor :ignore_filter
attr_accessor :db_failover
attr_accessor :db_failover_on_db_error
attr_accessor :db_failover_allow_parameter_override
attr_accessor :allow_multiple_experiments
attr_accessor :enabled
attr_accessor :persistence
attr_accessor :persistence_cookie_length
attr_accessor :persistence_cookie_domain
attr_accessor :algorithm
attr_accessor :store_override
attr_accessor :start_manually
attr_accessor :reset_manually
attr_accessor :on_trial
attr_accessor :on_trial_choose
attr_accessor :on_trial_complete
attr_accessor :on_experiment_reset
attr_accessor :on_experiment_delete
attr_accessor :on_before_experiment_reset
attr_accessor :on_experiment_winner_choose
attr_accessor :on_before_experiment_delete
attr_accessor :include_rails_helper
attr_accessor :beta_probability_simulations
attr_accessor :winning_alternative_recalculation_interval
attr_accessor :redis
attr_accessor :dashboard_pagination_default_per_page
attr_accessor :cache
attr_reader :experiments
attr_writer :bots
attr_writer :robot_regex
def bots
@bots ||= {
# Indexers
"AdsBot-Google" => "Google Adwords",
"Baidu" => "Chinese search engine",
"Baiduspider" => "Chinese search engine",
"bingbot" => "Microsoft bing bot",
"Butterfly" => "Topsy Labs",
"Gigabot" => "Gigabot spider",
"Googlebot" => "Google spider",
"MJ12bot" => "Majestic-12 spider",
"msnbot" => "Microsoft bot",
"rogerbot" => "SeoMoz spider",
"PaperLiBot" => "PaperLi is another content curation service",
"Slurp" => "Yahoo spider",
"Sogou" => "Chinese search engine",
"spider" => "generic web spider",
"UnwindFetchor" => "Gnip crawler",
"WordPress" => "WordPress spider",
"YandexAccessibilityBot" => "Yandex accessibility spider",
"YandexBot" => "Yandex spider",
"YandexMobileBot" => "Yandex mobile spider",
"ZIBB" => "ZIBB spider",
# HTTP libraries
"Apache-HttpClient" => "Java http library",
"AppEngine-Google" => "Google App Engine",
"curl" => "curl unix CLI http client",
"ColdFusion" => "ColdFusion http library",
"EventMachine HttpClient" => "Ruby http library",
"Go http package" => "Go http library",
"Go-http-client" => "Go http library",
"Java" => "Generic Java http library",
"libwww-perl" => "Perl client-server library loved by script kids",
"lwp-trivial" => "Another Perl library loved by script kids",
"Python-urllib" => "Python http library",
"PycURL" => "Python http library",
"Test Certificate Info" => "C http library?",
"Typhoeus" => "Ruby http library",
"Wget" => "wget unix CLI http client",
# URL expanders / previewers
"awe.sm" => "Awe.sm URL expander",
"bitlybot" => "bit.ly bot",
"[email protected]" => "Linkfluence bot",
"facebookexternalhit" => "facebook bot",
"Facebot" => "Facebook crawler",
"Feedfetcher-Google" => "Google Feedfetcher",
"https://developers.google.com/+/web/snippet" => "Google+ Snippet Fetcher",
"LinkedInBot" => "LinkedIn bot",
"LongURL" => "URL expander service",
"NING" => "NING - Yet Another Twitter Swarmer",
"Pinterestbot" => "Pinterest Bot",
"redditbot" => "Reddit Bot",
"ShortLinkTranslate" => "Link shortener",
"Slackbot" => "Slackbot link expander",
"TweetmemeBot" => "TweetMeMe Crawler",
"Twitterbot" => "Twitter URL expander",
"UnwindFetch" => "Gnip URL expander",
"vkShare" => "VKontake Sharer",
# Uptime monitoring
"check_http" => "Nagios monitor",
"GoogleStackdriverMonitoring" => "Google Cloud monitor",
"NewRelicPinger" => "NewRelic monitor",
"Panopta" => "Monitoring service",
"Pingdom" => "Pingdom monitoring",
"SiteUptime" => "Site monitoring services",
"UptimeRobot" => "Monitoring service",
# ???
"DigitalPersona Fingerprint Software" => "HP Fingerprint scanner",
"ShowyouBot" => "Showyou iOS app spider",
"ZyBorg" => "Zyborg? Hmmm....",
"ELB-HealthChecker" => "ELB Health Check"
}
end
def experiments= experiments
raise InvalidExperimentsFormatError.new('Experiments must be a Hash') unless experiments.respond_to?(:keys)
@experiments = experiments
end
def disabled?
!enabled
end
def experiment_for(name)
if normalized_experiments
# TODO symbols
normalized_experiments[name.to_sym]
end
end
def metrics
return @metrics if defined?(@metrics)
@metrics = {}
if self.experiments
self.experiments.each do |key, value|
metrics = value_for(value, :metric) rescue nil
Array(metrics).each do |metric_name|
if metric_name
@metrics[metric_name.to_sym] ||= []
@metrics[metric_name.to_sym] << Split::Experiment.new(key)
end
end
end
end
@metrics
end
def normalized_experiments
return nil if @experiments.nil?
experiment_config = {}
@experiments.keys.each do |name|
experiment_config[name.to_sym] = {}
end
@experiments.each do |experiment_name, settings|
alternatives = if (alts = value_for(settings, :alternatives))
normalize_alternatives(alts)
end
experiment_data = {
alternatives: alternatives,
goals: value_for(settings, :goals),
metadata: value_for(settings, :metadata),
algorithm: value_for(settings, :algorithm),
resettable: value_for(settings, :resettable)
}
experiment_data.each do |name, value|
experiment_config[experiment_name.to_sym][name] = value if value != nil
end
end
experiment_config
end
def normalize_alternatives(alternatives)
given_probability, num_with_probability = alternatives.inject([0, 0]) do |a, v|
p, n = a
if percent = value_for(v, :percent)
[p + percent, n + 1]
else
a
end
end
num_without_probability = alternatives.length - num_with_probability
unassigned_probability = ((100.0 - given_probability) / num_without_probability / 100.0)
if num_with_probability.nonzero?
alternatives = alternatives.map do |v|
if (name = value_for(v, :name)) && (percent = value_for(v, :percent))
{ name => percent / 100.0 }
elsif name = value_for(v, :name)
{ name => unassigned_probability }
else
{ v => unassigned_probability }
end
end
[alternatives.shift, alternatives]
else
alternatives = alternatives.dup
[alternatives.shift, alternatives]
end
end
def robot_regex
@robot_regex ||= /\b(?:#{escaped_bots.join('|')})\b|\A\W*\z/i
end
def initialize
@ignore_ip_addresses = []
@ignore_filter = proc { |request| is_robot? || is_ignored_ip_address? }
@db_failover = false
@db_failover_on_db_error = proc { |error| } # e.g. use Rails logger here
@on_experiment_reset = proc { |experiment| }
@on_experiment_delete = proc { |experiment| }
@on_before_experiment_reset = proc { |experiment| }
@on_before_experiment_delete = proc { |experiment| }
@on_experiment_winner_choose = proc { |experiment| }
@db_failover_allow_parameter_override = false
@allow_multiple_experiments = false
@enabled = true
@experiments = {}
@persistence = Split::Persistence::SessionAdapter
@persistence_cookie_length = 31536000 # One year from now
@persistence_cookie_domain = nil
@algorithm = Split::Algorithms::WeightedSample
@include_rails_helper = true
@beta_probability_simulations = 10000
@winning_alternative_recalculation_interval = 60 * 60 * 24 # 1 day
@redis = ENV.fetch(ENV.fetch("REDIS_PROVIDER", "REDIS_URL"), "redis://localhost:6379")
@dashboard_pagination_default_per_page = 10
end
private
def value_for(hash, key)
if hash.kind_of?(Hash)
hash.has_key?(key.to_s) ? hash[key.to_s] : hash[key.to_sym]
end
end
def escaped_bots
bots.map { |key, _| Regexp.escape(key) }
end
end
end
<MSG> Fix Style/MethodDefParentheses
<DFF> @@ -114,7 +114,7 @@ module Split
}
end
- def experiments= experiments
+ def experiments=(experiments)
raise InvalidExperimentsFormatError.new('Experiments must be a Hash') unless experiments.respond_to?(:keys)
@experiments = experiments
end
| 1 | Fix Style/MethodDefParentheses | 1 | .rb | rb | mit | splitrb/split |
10070898 | <NME> configuration.rb
<BEF> # frozen_string_literal: true
module Split
class Configuration
attr_accessor :ignore_ip_addresses
attr_accessor :ignore_filter
attr_accessor :db_failover
attr_accessor :db_failover_on_db_error
attr_accessor :db_failover_allow_parameter_override
attr_accessor :allow_multiple_experiments
attr_accessor :enabled
attr_accessor :persistence
attr_accessor :persistence_cookie_length
attr_accessor :persistence_cookie_domain
attr_accessor :algorithm
attr_accessor :store_override
attr_accessor :start_manually
attr_accessor :reset_manually
attr_accessor :on_trial
attr_accessor :on_trial_choose
attr_accessor :on_trial_complete
attr_accessor :on_experiment_reset
attr_accessor :on_experiment_delete
attr_accessor :on_before_experiment_reset
attr_accessor :on_experiment_winner_choose
attr_accessor :on_before_experiment_delete
attr_accessor :include_rails_helper
attr_accessor :beta_probability_simulations
attr_accessor :winning_alternative_recalculation_interval
attr_accessor :redis
attr_accessor :dashboard_pagination_default_per_page
attr_accessor :cache
attr_reader :experiments
attr_writer :bots
attr_writer :robot_regex
def bots
@bots ||= {
# Indexers
"AdsBot-Google" => "Google Adwords",
"Baidu" => "Chinese search engine",
"Baiduspider" => "Chinese search engine",
"bingbot" => "Microsoft bing bot",
"Butterfly" => "Topsy Labs",
"Gigabot" => "Gigabot spider",
"Googlebot" => "Google spider",
"MJ12bot" => "Majestic-12 spider",
"msnbot" => "Microsoft bot",
"rogerbot" => "SeoMoz spider",
"PaperLiBot" => "PaperLi is another content curation service",
"Slurp" => "Yahoo spider",
"Sogou" => "Chinese search engine",
"spider" => "generic web spider",
"UnwindFetchor" => "Gnip crawler",
"WordPress" => "WordPress spider",
"YandexAccessibilityBot" => "Yandex accessibility spider",
"YandexBot" => "Yandex spider",
"YandexMobileBot" => "Yandex mobile spider",
"ZIBB" => "ZIBB spider",
# HTTP libraries
"Apache-HttpClient" => "Java http library",
"AppEngine-Google" => "Google App Engine",
"curl" => "curl unix CLI http client",
"ColdFusion" => "ColdFusion http library",
"EventMachine HttpClient" => "Ruby http library",
"Go http package" => "Go http library",
"Go-http-client" => "Go http library",
"Java" => "Generic Java http library",
"libwww-perl" => "Perl client-server library loved by script kids",
"lwp-trivial" => "Another Perl library loved by script kids",
"Python-urllib" => "Python http library",
"PycURL" => "Python http library",
"Test Certificate Info" => "C http library?",
"Typhoeus" => "Ruby http library",
"Wget" => "wget unix CLI http client",
# URL expanders / previewers
"awe.sm" => "Awe.sm URL expander",
"bitlybot" => "bit.ly bot",
"[email protected]" => "Linkfluence bot",
"facebookexternalhit" => "facebook bot",
"Facebot" => "Facebook crawler",
"Feedfetcher-Google" => "Google Feedfetcher",
"https://developers.google.com/+/web/snippet" => "Google+ Snippet Fetcher",
"LinkedInBot" => "LinkedIn bot",
"LongURL" => "URL expander service",
"NING" => "NING - Yet Another Twitter Swarmer",
"Pinterestbot" => "Pinterest Bot",
"redditbot" => "Reddit Bot",
"ShortLinkTranslate" => "Link shortener",
"Slackbot" => "Slackbot link expander",
"TweetmemeBot" => "TweetMeMe Crawler",
"Twitterbot" => "Twitter URL expander",
"UnwindFetch" => "Gnip URL expander",
"vkShare" => "VKontake Sharer",
# Uptime monitoring
"check_http" => "Nagios monitor",
"GoogleStackdriverMonitoring" => "Google Cloud monitor",
"NewRelicPinger" => "NewRelic monitor",
"Panopta" => "Monitoring service",
"Pingdom" => "Pingdom monitoring",
"SiteUptime" => "Site monitoring services",
"UptimeRobot" => "Monitoring service",
# ???
"DigitalPersona Fingerprint Software" => "HP Fingerprint scanner",
"ShowyouBot" => "Showyou iOS app spider",
"ZyBorg" => "Zyborg? Hmmm....",
"ELB-HealthChecker" => "ELB Health Check"
}
end
def experiments= experiments
raise InvalidExperimentsFormatError.new('Experiments must be a Hash') unless experiments.respond_to?(:keys)
@experiments = experiments
end
def disabled?
!enabled
end
def experiment_for(name)
if normalized_experiments
# TODO symbols
normalized_experiments[name.to_sym]
end
end
def metrics
return @metrics if defined?(@metrics)
@metrics = {}
if self.experiments
self.experiments.each do |key, value|
metrics = value_for(value, :metric) rescue nil
Array(metrics).each do |metric_name|
if metric_name
@metrics[metric_name.to_sym] ||= []
@metrics[metric_name.to_sym] << Split::Experiment.new(key)
end
end
end
end
@metrics
end
def normalized_experiments
return nil if @experiments.nil?
experiment_config = {}
@experiments.keys.each do |name|
experiment_config[name.to_sym] = {}
end
@experiments.each do |experiment_name, settings|
alternatives = if (alts = value_for(settings, :alternatives))
normalize_alternatives(alts)
end
experiment_data = {
alternatives: alternatives,
goals: value_for(settings, :goals),
metadata: value_for(settings, :metadata),
algorithm: value_for(settings, :algorithm),
resettable: value_for(settings, :resettable)
}
experiment_data.each do |name, value|
experiment_config[experiment_name.to_sym][name] = value if value != nil
end
end
experiment_config
end
def normalize_alternatives(alternatives)
given_probability, num_with_probability = alternatives.inject([0, 0]) do |a, v|
p, n = a
if percent = value_for(v, :percent)
[p + percent, n + 1]
else
a
end
end
num_without_probability = alternatives.length - num_with_probability
unassigned_probability = ((100.0 - given_probability) / num_without_probability / 100.0)
if num_with_probability.nonzero?
alternatives = alternatives.map do |v|
if (name = value_for(v, :name)) && (percent = value_for(v, :percent))
{ name => percent / 100.0 }
elsif name = value_for(v, :name)
{ name => unassigned_probability }
else
{ v => unassigned_probability }
end
end
[alternatives.shift, alternatives]
else
alternatives = alternatives.dup
[alternatives.shift, alternatives]
end
end
def robot_regex
@robot_regex ||= /\b(?:#{escaped_bots.join('|')})\b|\A\W*\z/i
end
def initialize
@ignore_ip_addresses = []
@ignore_filter = proc { |request| is_robot? || is_ignored_ip_address? }
@db_failover = false
@db_failover_on_db_error = proc { |error| } # e.g. use Rails logger here
@on_experiment_reset = proc { |experiment| }
@on_experiment_delete = proc { |experiment| }
@on_before_experiment_reset = proc { |experiment| }
@on_before_experiment_delete = proc { |experiment| }
@on_experiment_winner_choose = proc { |experiment| }
@db_failover_allow_parameter_override = false
@allow_multiple_experiments = false
@enabled = true
@experiments = {}
@persistence = Split::Persistence::SessionAdapter
@persistence_cookie_length = 31536000 # One year from now
@persistence_cookie_domain = nil
@algorithm = Split::Algorithms::WeightedSample
@include_rails_helper = true
@beta_probability_simulations = 10000
@winning_alternative_recalculation_interval = 60 * 60 * 24 # 1 day
@redis = ENV.fetch(ENV.fetch("REDIS_PROVIDER", "REDIS_URL"), "redis://localhost:6379")
@dashboard_pagination_default_per_page = 10
end
private
def value_for(hash, key)
if hash.kind_of?(Hash)
hash.has_key?(key.to_s) ? hash[key.to_s] : hash[key.to_sym]
end
end
def escaped_bots
bots.map { |key, _| Regexp.escape(key) }
end
end
end
<MSG> Fix Style/MethodDefParentheses
<DFF> @@ -114,7 +114,7 @@ module Split
}
end
- def experiments= experiments
+ def experiments=(experiments)
raise InvalidExperimentsFormatError.new('Experiments must be a Hash') unless experiments.respond_to?(:keys)
@experiments = experiments
end
| 1 | Fix Style/MethodDefParentheses | 1 | .rb | rb | mit | splitrb/split |
10070899 | <NME> configuration.rb
<BEF> # frozen_string_literal: true
module Split
class Configuration
attr_accessor :ignore_ip_addresses
attr_accessor :ignore_filter
attr_accessor :db_failover
attr_accessor :db_failover_on_db_error
attr_accessor :db_failover_allow_parameter_override
attr_accessor :allow_multiple_experiments
attr_accessor :enabled
attr_accessor :persistence
attr_accessor :persistence_cookie_length
attr_accessor :persistence_cookie_domain
attr_accessor :algorithm
attr_accessor :store_override
attr_accessor :start_manually
attr_accessor :reset_manually
attr_accessor :on_trial
attr_accessor :on_trial_choose
attr_accessor :on_trial_complete
attr_accessor :on_experiment_reset
attr_accessor :on_experiment_delete
attr_accessor :on_before_experiment_reset
attr_accessor :on_experiment_winner_choose
attr_accessor :on_before_experiment_delete
attr_accessor :include_rails_helper
attr_accessor :beta_probability_simulations
attr_accessor :winning_alternative_recalculation_interval
attr_accessor :redis
attr_accessor :dashboard_pagination_default_per_page
attr_accessor :cache
attr_reader :experiments
attr_writer :bots
attr_writer :robot_regex
def bots
@bots ||= {
# Indexers
"AdsBot-Google" => "Google Adwords",
"Baidu" => "Chinese search engine",
"Baiduspider" => "Chinese search engine",
"bingbot" => "Microsoft bing bot",
"Butterfly" => "Topsy Labs",
"Gigabot" => "Gigabot spider",
"Googlebot" => "Google spider",
"MJ12bot" => "Majestic-12 spider",
"msnbot" => "Microsoft bot",
"rogerbot" => "SeoMoz spider",
"PaperLiBot" => "PaperLi is another content curation service",
"Slurp" => "Yahoo spider",
"Sogou" => "Chinese search engine",
"spider" => "generic web spider",
"UnwindFetchor" => "Gnip crawler",
"WordPress" => "WordPress spider",
"YandexAccessibilityBot" => "Yandex accessibility spider",
"YandexBot" => "Yandex spider",
"YandexMobileBot" => "Yandex mobile spider",
"ZIBB" => "ZIBB spider",
# HTTP libraries
"Apache-HttpClient" => "Java http library",
"AppEngine-Google" => "Google App Engine",
"curl" => "curl unix CLI http client",
"ColdFusion" => "ColdFusion http library",
"EventMachine HttpClient" => "Ruby http library",
"Go http package" => "Go http library",
"Go-http-client" => "Go http library",
"Java" => "Generic Java http library",
"libwww-perl" => "Perl client-server library loved by script kids",
"lwp-trivial" => "Another Perl library loved by script kids",
"Python-urllib" => "Python http library",
"PycURL" => "Python http library",
"Test Certificate Info" => "C http library?",
"Typhoeus" => "Ruby http library",
"Wget" => "wget unix CLI http client",
# URL expanders / previewers
"awe.sm" => "Awe.sm URL expander",
"bitlybot" => "bit.ly bot",
"[email protected]" => "Linkfluence bot",
"facebookexternalhit" => "facebook bot",
"Facebot" => "Facebook crawler",
"Feedfetcher-Google" => "Google Feedfetcher",
"https://developers.google.com/+/web/snippet" => "Google+ Snippet Fetcher",
"LinkedInBot" => "LinkedIn bot",
"LongURL" => "URL expander service",
"NING" => "NING - Yet Another Twitter Swarmer",
"Pinterestbot" => "Pinterest Bot",
"redditbot" => "Reddit Bot",
"ShortLinkTranslate" => "Link shortener",
"Slackbot" => "Slackbot link expander",
"TweetmemeBot" => "TweetMeMe Crawler",
"Twitterbot" => "Twitter URL expander",
"UnwindFetch" => "Gnip URL expander",
"vkShare" => "VKontake Sharer",
# Uptime monitoring
"check_http" => "Nagios monitor",
"GoogleStackdriverMonitoring" => "Google Cloud monitor",
"NewRelicPinger" => "NewRelic monitor",
"Panopta" => "Monitoring service",
"Pingdom" => "Pingdom monitoring",
"SiteUptime" => "Site monitoring services",
"UptimeRobot" => "Monitoring service",
# ???
"DigitalPersona Fingerprint Software" => "HP Fingerprint scanner",
"ShowyouBot" => "Showyou iOS app spider",
"ZyBorg" => "Zyborg? Hmmm....",
"ELB-HealthChecker" => "ELB Health Check"
}
end
def experiments= experiments
raise InvalidExperimentsFormatError.new('Experiments must be a Hash') unless experiments.respond_to?(:keys)
@experiments = experiments
end
def disabled?
!enabled
end
def experiment_for(name)
if normalized_experiments
# TODO symbols
normalized_experiments[name.to_sym]
end
end
def metrics
return @metrics if defined?(@metrics)
@metrics = {}
if self.experiments
self.experiments.each do |key, value|
metrics = value_for(value, :metric) rescue nil
Array(metrics).each do |metric_name|
if metric_name
@metrics[metric_name.to_sym] ||= []
@metrics[metric_name.to_sym] << Split::Experiment.new(key)
end
end
end
end
@metrics
end
def normalized_experiments
return nil if @experiments.nil?
experiment_config = {}
@experiments.keys.each do |name|
experiment_config[name.to_sym] = {}
end
@experiments.each do |experiment_name, settings|
alternatives = if (alts = value_for(settings, :alternatives))
normalize_alternatives(alts)
end
experiment_data = {
alternatives: alternatives,
goals: value_for(settings, :goals),
metadata: value_for(settings, :metadata),
algorithm: value_for(settings, :algorithm),
resettable: value_for(settings, :resettable)
}
experiment_data.each do |name, value|
experiment_config[experiment_name.to_sym][name] = value if value != nil
end
end
experiment_config
end
def normalize_alternatives(alternatives)
given_probability, num_with_probability = alternatives.inject([0, 0]) do |a, v|
p, n = a
if percent = value_for(v, :percent)
[p + percent, n + 1]
else
a
end
end
num_without_probability = alternatives.length - num_with_probability
unassigned_probability = ((100.0 - given_probability) / num_without_probability / 100.0)
if num_with_probability.nonzero?
alternatives = alternatives.map do |v|
if (name = value_for(v, :name)) && (percent = value_for(v, :percent))
{ name => percent / 100.0 }
elsif name = value_for(v, :name)
{ name => unassigned_probability }
else
{ v => unassigned_probability }
end
end
[alternatives.shift, alternatives]
else
alternatives = alternatives.dup
[alternatives.shift, alternatives]
end
end
def robot_regex
@robot_regex ||= /\b(?:#{escaped_bots.join('|')})\b|\A\W*\z/i
end
def initialize
@ignore_ip_addresses = []
@ignore_filter = proc { |request| is_robot? || is_ignored_ip_address? }
@db_failover = false
@db_failover_on_db_error = proc { |error| } # e.g. use Rails logger here
@on_experiment_reset = proc { |experiment| }
@on_experiment_delete = proc { |experiment| }
@on_before_experiment_reset = proc { |experiment| }
@on_before_experiment_delete = proc { |experiment| }
@on_experiment_winner_choose = proc { |experiment| }
@db_failover_allow_parameter_override = false
@allow_multiple_experiments = false
@enabled = true
@experiments = {}
@persistence = Split::Persistence::SessionAdapter
@persistence_cookie_length = 31536000 # One year from now
@persistence_cookie_domain = nil
@algorithm = Split::Algorithms::WeightedSample
@include_rails_helper = true
@beta_probability_simulations = 10000
@winning_alternative_recalculation_interval = 60 * 60 * 24 # 1 day
@redis = ENV.fetch(ENV.fetch("REDIS_PROVIDER", "REDIS_URL"), "redis://localhost:6379")
@dashboard_pagination_default_per_page = 10
end
private
def value_for(hash, key)
if hash.kind_of?(Hash)
hash.has_key?(key.to_s) ? hash[key.to_s] : hash[key.to_sym]
end
end
def escaped_bots
bots.map { |key, _| Regexp.escape(key) }
end
end
end
<MSG> Fix Style/MethodDefParentheses
<DFF> @@ -114,7 +114,7 @@ module Split
}
end
- def experiments= experiments
+ def experiments=(experiments)
raise InvalidExperimentsFormatError.new('Experiments must be a Hash') unless experiments.respond_to?(:keys)
@experiments = experiments
end
| 1 | Fix Style/MethodDefParentheses | 1 | .rb | rb | mit | splitrb/split |
10070900 | <NME> README
<BEF> =========================================
ChiShop/DjangoPyPI
=========================================
:Version: 0.1
Installation
============
Installation
============
First you have to install the dependencies::
$ python setup.py build
# python setup.py install # (run as root)
Initial configuration
---------------------
::
$ cd chipshop/
$ $EDITOR settings.py
$ python manage.py syncdb
Run the PyPI server
-------------------
::
$ python manage.py runserver
Please note that ``chishop/media/dists`` has to be writable by the
user the web-server is running as.
-------------
You may want to copy the file ``chishop/production_example.py`` and modify
for use as your production settings; you will also need to modify
``bin/django.wsgi`` to refer to your production settings.
Using Setuptools
================
Add the following to your ``~/.pypirc`` file::
[distutils]
index-servers =
pypi
local
[pypi]
username:user
password:secret
[local]
username:user
password:secret
repository:http://localhost:8000
Uploading a package: Python >=2.6
--------------------------------------------
To push the package to the local pypi::
$ python setup.py register -r local sdist upload -r local
Uploading a package: Python <2.6
-------------------------------------------
If you don't have Python 2.6 please run the command below to install the backport of the extension::
$ easy_install -U collective.dist
instead of using register and dist command, you can use "mregister" and "mupload", that are a backport of python 2.6 register and upload commands, that supports multiple servers.
To push the package to the local pypi::
$ python setup.py mregister -r local sdist mupload -r local
.. # vim: syntax=rst expandtab tabstop=4 shiftwidth=4 shiftround
<MSG> Changed install instructions to use zc.buildout.
<DFF> @@ -8,27 +8,23 @@ ChiShop/DjangoPyPI
Installation
============
-First you have to install the dependencies::
+Install dependencies::
- $ python setup.py build
- # python setup.py install # (run as root)
+ $ python bootstrap.py --distribute
+ $ ./bin/buildout
Initial configuration
---------------------
::
- $ cd chipshop/
-
- $ $EDITOR settings.py
-
- $ python manage.py syncdb
+ $ $EDITOR chishop/settings.py
+ $ ./bin/django syncdb
Run the PyPI server
-------------------
::
- $ python manage.py runserver
-
+ $ ./bin/django runserver
Please note that ``chishop/media/dists`` has to be writable by the
user the web-server is running as.
| 6 | Changed install instructions to use zc.buildout. | 10 | README | bsd-3-clause | ask/chishop |
|
10070901 | <NME> helper_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
# TODO change some of these tests to use Rack::Test
describe Split::Helper do
include Split::Helper
let(:experiment) {
Split::ExperimentCatalog.find_or_create("link_color", "blue", "red")
}
describe "ab_test" do
it "should not raise an error when passed strings for alternatives" do
expect { ab_test("xyz", "1", "2", "3") }.not_to raise_error
end
it "should not raise an error when passed an array for alternatives" do
expect { ab_test("xyz", ["1", "2", "3"]) }.not_to raise_error
end
it "should raise the appropriate error when passed integers for alternatives" do
expect { ab_test("xyz", 1, 2, 3) }.to raise_error(ArgumentError)
end
it "should raise the appropriate error when passed symbols for alternatives" do
expect { ab_test("xyz", :a, :b, :c) }.to raise_error(ArgumentError)
end
it "should not raise error when passed an array for goals" do
expect { ab_test({ "link_color" => ["purchase", "refund"] }, "blue", "red") }.not_to raise_error
end
it "should not raise error when passed just one goal" do
expect { ab_test({ "link_color" => "purchase" }, "blue", "red") }.not_to raise_error
end
it "raises an appropriate error when processing combined expirements" do
Split.configuration.experiments = {
combined_exp_1: {
alternatives: [ { name: "control", percent: 50 }, { name: "test-alt", percent: 50 } ],
metric: :my_metric,
combined_experiments: [:combined_exp_1_sub_1]
}
}
Split::ExperimentCatalog.find_or_create("combined_exp_1")
expect { ab_test("combined_exp_1") }.to raise_error(Split::InvalidExperimentsFormatError)
end
it "should assign a random alternative to a new user when there are an equal number of alternatives assigned" do
ab_test("link_color", "blue", "red")
expect(["red", "blue"]).to include(ab_user["link_color"])
end
it "should increment the participation counter after assignment to a new user" do
previous_red_count = Split::Alternative.new("red", "link_color").participant_count
previous_blue_count = Split::Alternative.new("blue", "link_color").participant_count
ab_test("link_color", "blue", "red")
new_red_count = Split::Alternative.new("red", "link_color").participant_count
new_blue_count = Split::Alternative.new("blue", "link_color").participant_count
expect((new_red_count + new_blue_count)).to eq(previous_red_count + previous_blue_count + 1)
end
it "should not increment the counter for an experiment that the user is not participating in" do
ab_test("link_color", "blue", "red")
e = Split::ExperimentCatalog.find_or_create("button_size", "small", "big")
expect {
# User shouldn't participate in this second experiment
ab_test("button_size", "small", "big")
}.not_to change { e.participant_count }
end
it "should not increment the counter for an ended experiment" do
e = Split::ExperimentCatalog.find_or_create("button_size", "small", "big")
e.winner = "small"
expect {
a = ab_test("button_size", "small", "big")
expect(a).to eq("small")
}.not_to change { e.participant_count }
end
it "should not increment the counter for an not started experiment" do
expect(Split.configuration).to receive(:start_manually).and_return(true)
e = Split::ExperimentCatalog.find_or_create("button_size", "small", "big")
expect {
a = ab_test("button_size", "small", "big")
expect(a).to eq("small")
}.not_to change { e.participant_count }
end
it "should return the given alternative for an existing user" do
alternative.should eql('red')
end
it "should allow passing a block" do
alt = ab_test('link_color', 'blue', 'red')
ret = ab_test('link_color', 'blue', 'red') { |alternative| "shared/#{alternative}" }
expect(alternative).to eq("red")
alternative = ab_test("link_color", { "blue" => 5 }, "red" => 1)
expect(alternative).to eq("red")
end
it "should not allow an arbitrary alternative" do
@params = { "ab_test" => { "link_color" => "pink" } }
alternative = ab_test("link_color", "blue")
expect(alternative).to eq("blue")
end
it "should not store the split when a param forced alternative" do
@params = { "ab_test" => { "link_color" => "blue" } }
expect(ab_user).not_to receive(:[]=)
ab_test("link_color", "blue", "red")
end
it "SPLIT_DISABLE query parameter should also force the alternative (uses control)" do
@params = { "SPLIT_DISABLE" => "true" }
alternative = ab_test("link_color", "blue", "red")
expect(alternative).to eq("blue")
alternative = ab_test("link_color", { "blue" => 1 }, "red" => 5)
expect(alternative).to eq("blue")
alternative = ab_test("link_color", "red", "blue")
expect(alternative).to eq("red")
alternative = ab_test("link_color", { "red" => 5 }, "blue" => 1)
expect(alternative).to eq("red")
end
it "should not store the split when Split generically disabled" do
@params = { "SPLIT_DISABLE" => "true" }
expect(ab_user).not_to receive(:[]=)
ab_test("link_color", "blue", "red")
end
context "when store_override is set" do
before { Split.configuration.store_override = true }
it "should store the forced alternative" do
@params = { "ab_test" => { "link_color" => "blue" } }
expect(ab_user).to receive(:[]=).with("link_color", "blue")
ab_test("link_color", "blue", "red")
end
end
context "when on_trial_choose is set" do
before { Split.configuration.on_trial_choose = :some_method }
it "should call the method" do
expect(self).to receive(:some_method)
ab_test("link_color", "blue", "red")
end
end
it "should allow passing a block" do
alt = ab_test("link_color", "blue", "red")
ret = ab_test("link_color", "blue", "red") { |alternative| "shared/#{alternative}" }
expect(ret).to eq("shared/#{alt}")
end
it "should allow the share of visitors see an alternative to be specified" do
ab_test("link_color", { "blue" => 0.8 }, { "red" => 20 })
expect(["red", "blue"]).to include(ab_user["link_color"])
end
it "should allow alternative weighting interface as a single hash" do
ab_test("link_color", { "blue" => 0.01 }, "red" => 0.2)
experiment = Split::ExperimentCatalog.find("link_color")
expect(experiment.alternatives.map(&:name)).to eq(["blue", "red"])
expect(experiment.alternatives.collect { |a| a.weight }).to match_array([0.01, 0.2])
end
it "should only let a user participate in one experiment at a time" do
link_color = ab_test("link_color", "blue", "red")
ab_test("button_size", "small", "big")
expect(ab_user["link_color"]).to eq(link_color)
big = Split::Alternative.new("big", "button_size")
expect(big.participant_count).to eq(0)
small = Split::Alternative.new("small", "button_size")
expect(small.participant_count).to eq(0)
end
it "should let a user participate in many experiment with allow_multiple_experiments option" do
Split.configure do |config|
config.allow_multiple_experiments = true
end
link_color = ab_test("link_color", "blue", "red")
button_size = ab_test("button_size", "small", "big")
expect(ab_user["link_color"]).to eq(link_color)
expect(ab_user["button_size"]).to eq(button_size)
button_size_alt = Split::Alternative.new(button_size, "button_size")
expect(button_size_alt.participant_count).to eq(1)
end
context "with allow_multiple_experiments = 'control'" do
it "should let a user participate in many experiment with one non-'control' alternative" do
Split.configure do |config|
config.allow_multiple_experiments = "control"
end
groups = 100.times.map do |n|
ab_test("test#{n}".to_sym, { "control" => (100 - n) }, { "test#{n}-alt" => n })
end
experiments = ab_user.active_experiments
expect(experiments.size).to be > 1
count_control = experiments.values.count { |g| g == "control" }
expect(count_control).to eq(experiments.size - 1)
count_alts = groups.count { |g| g != "control" }
expect(count_alts).to eq(1)
end
context "when user already has experiment" do
let(:mock_user) { Split::User.new(self, { "test_0" => "test-alt" }) }
before do
Split.configure do |config|
config.allow_multiple_experiments = "control"
end
Split::ExperimentCatalog.find_or_initialize("test_0", "control", "test-alt").save
Split::ExperimentCatalog.find_or_initialize("test_1", "control", "test-alt").save
end
it "should restore previously selected alternative" do
expect(ab_user.active_experiments.size).to eq 1
expect(ab_test(:test_0, { "control" => 100 }, { "test-alt" => 1 })).to eq "test-alt"
expect(ab_test(:test_0, { "control" => 1 }, { "test-alt" => 100 })).to eq "test-alt"
end
it "should select the correct alternatives after experiment resets" do
experiment = Split::ExperimentCatalog.find(:test_0)
experiment.reset
mock_user[experiment.key] = "test-alt"
expect(ab_user.active_experiments.size).to eq 1
expect(ab_test(:test_0, { "control" => 100 }, { "test-alt" => 1 })).to eq "test-alt"
expect(ab_test(:test_0, { "control" => 0 }, { "test-alt" => 100 })).to eq "test-alt"
end
it "lets override existing choice" do
pending "this requires user store reset on first call not depending on whelther it is current trial"
@params = { "ab_test" => { "test_1" => "test-alt" } }
expect(ab_test(:test_0, { "control" => 0 }, { "test-alt" => 100 })).to eq "control"
expect(ab_test(:test_1, { "control" => 100 }, { "test-alt" => 1 })).to eq "test-alt"
end
end
end
it "should not over-write a finished key when an experiment is on a later version" do
experiment.increment_version
ab_user = { experiment.key => "blue", experiment.finished_key => true }
finished_session = ab_user.dup
ab_test("link_color", "blue", "red")
expect(ab_user).to eq(finished_session)
end
end
describe "metadata" do
context "is defined" do
before do
Split.configuration.experiments = {
my_experiment: {
alternatives: ["one", "two"],
resettable: false,
metadata: { "one" => "Meta1", "two" => "Meta2" }
}
}
end
it "should be passed to helper block" do
@params = { "ab_test" => { "my_experiment" => "two" } }
expect(ab_test("my_experiment")).to eq "two"
expect(ab_test("my_experiment") do |alternative, meta|
meta
end).to eq("Meta2")
end
it "should pass control metadata helper block if library disabled" do
Split.configure do |config|
config.enabled = false
end
expect(ab_test("my_experiment")).to eq "one"
expect(ab_test("my_experiment") do |_, meta|
meta
end).to eq("Meta1")
end
end
context "is not defined" do
before do
Split.configuration.experiments = {
my_experiment: {
alternatives: ["one", "two"],
resettable: false,
metadata: nil
}
}
end
it "should be passed to helper block" do
expect(ab_test("my_experiment") do |alternative, meta|
meta
end).to eq({})
end
it "should pass control metadata helper block if library disabled" do
Split.configure do |config|
config.enabled = false
end
expect(ab_test("my_experiment") do |_, meta|
meta
end).to eq({})
end
end
end
describe "ab_finished" do
context "for an experiment that the user participates in" do
before(:each) do
@experiment_name = "link_color"
@alternatives = ["blue", "red"]
@experiment = Split::ExperimentCatalog.find_or_create(@experiment_name, *@alternatives)
@alternative_name = ab_test(@experiment_name, *@alternatives)
@previous_completion_count = Split::Alternative.new(@alternative_name, @experiment_name).completed_count
end
it "should increment the counter for the completed alternative" do
ab_finished(@experiment_name)
new_completion_count = Split::Alternative.new(@alternative_name, @experiment_name).completed_count
expect(new_completion_count).to eq(@previous_completion_count + 1)
end
it "should set experiment's finished key if reset is false" do
ab_finished(@experiment_name, { reset: false })
expect(ab_user[@experiment.key]).to eq(@alternative_name)
expect(ab_user[@experiment.finished_key]).to eq(true)
end
it "should not increment the counter if reset is false and the experiment has been already finished" do
2.times { ab_finished(@experiment_name, { reset: false }) }
new_completion_count = Split::Alternative.new(@alternative_name, @experiment_name).completed_count
expect(new_completion_count).to eq(@previous_completion_count + 1)
end
it "should not increment the counter for an ended experiment" do
e = Split::ExperimentCatalog.find_or_create("button_size", "small", "big")
e.winner = "small"
a = ab_test("button_size", "small", "big")
expect(a).to eq("small")
expect {
ab_finished("button_size")
}.not_to change { Split::Alternative.new(a, "button_size").completed_count }
end
it "should clear out the user's participation from their session" do
expect(ab_user[@experiment.key]).to eq(@alternative_name)
ab_finished(@experiment_name)
expect(ab_user.keys).to be_empty
end
it "should not clear out the users session if reset is false" do
expect(ab_user[@experiment.key]).to eq(@alternative_name)
ab_finished(@experiment_name, { reset: false })
expect(ab_user[@experiment.key]).to eq(@alternative_name)
expect(ab_user[@experiment.finished_key]).to eq(true)
end
it "should reset the users session when experiment is not versioned" do
expect(ab_user[@experiment.key]).to eq(@alternative_name)
ab_finished(@experiment_name)
expect(ab_user.keys).to be_empty
end
it "should reset the users session when experiment is versioned" do
@experiment.increment_version
@alternative_name = ab_test(@experiment_name, *@alternatives)
expect(ab_user[@experiment.key]).to eq(@alternative_name)
ab_finished(@experiment_name)
expect(ab_user.keys).to be_empty
end
context "when on_trial_complete is set" do
before { Split.configuration.on_trial_complete = :some_method }
it "should call the method" do
expect(self).to receive(:some_method)
ab_finished(@experiment_name)
end
it "should not call the method without alternative" do
ab_user[@experiment.key] = nil
expect(self).not_to receive(:some_method)
ab_finished(@experiment_name)
end
end
end
context "for an experiment that the user is excluded from" do
before do
alternative = ab_test("link_color", "blue", "red")
expect(Split::Alternative.new(alternative, "link_color").participant_count).to eq(1)
alternative = ab_test("button_size", "small", "big")
expect(Split::Alternative.new(alternative, "button_size").participant_count).to eq(0)
end
it "should not increment the completed counter" do
# So, user should be participating in the link_color experiment and
# receive the control for button_size. As the user is not participating in
# the button size experiment, finishing it should not increase the
# completion count for that alternative.
expect {
ab_finished("button_size")
}.not_to change { Split::Alternative.new("small", "button_size").completed_count }
end
end
context "for an experiment that the user does not participate in" do
before do
Split::ExperimentCatalog.find_or_create(:not_started_experiment, "control", "alt")
end
it "should not raise an exception" do
expect { ab_finished(:not_started_experiment) }.not_to raise_exception
end
it "should not change the user state when reset is false" do
expect { ab_finished(:not_started_experiment, reset: false) }.not_to change { ab_user.keys }.from([])
end
it "should not change the user state when reset is true" do
expect(self).not_to receive(:reset!)
ab_finished(:not_started_experiment)
end
it "should not increment the completed counter" do
ab_finished(:not_started_experiment)
expect(Split::Alternative.new("control", :not_started_experiment).completed_count).to eq(0)
expect(Split::Alternative.new("alt", :not_started_experiment).completed_count).to eq(0)
end
end
end
context "finished with config" do
it "passes reset option" do
Split.configuration.experiments = {
my_experiment: {
alternatives: ["one", "two"],
resettable: false,
}
}
alternative = ab_test(:my_experiment)
experiment = Split::ExperimentCatalog.find :my_experiment
ab_finished :my_experiment
expect(ab_user[experiment.key]).to eq(alternative)
expect(ab_user[experiment.finished_key]).to eq(true)
end
end
context "finished with metric name" do
before { Split.configuration.experiments = {} }
before { expect(Split::Alternative).to receive(:new).at_least(1).times.and_call_original }
def should_finish_experiment(experiment_name, should_finish = true)
alts = Split.configuration.experiments[experiment_name][:alternatives]
experiment = Split::ExperimentCatalog.find_or_create(experiment_name, *alts)
alt_name = ab_user[experiment.key] = alts.first
alt = double("alternative")
expect(alt).to receive(:name).at_most(1).times.and_return(alt_name)
expect(Split::Alternative).to receive(:new).at_most(1).times.with(alt_name, experiment_name.to_s).and_return(alt)
if should_finish
expect(alt).to receive(:increment_completion).at_most(1).times
else
expect(alt).not_to receive(:increment_completion)
end
end
it "completes the test" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ],
metric: :my_metric
}
should_finish_experiment :my_experiment
ab_finished :my_metric
end
it "completes all relevant tests" do
Split.configuration.experiments = {
exp_1: {
alternatives: [ "1-1", "1-2" ],
metric: :my_metric
},
exp_2: {
alternatives: [ "2-1", "2-2" ],
metric: :another_metric
},
exp_3: {
alternatives: [ "3-1", "3-2" ],
metric: :my_metric
},
}
should_finish_experiment :exp_1
should_finish_experiment :exp_2, false
should_finish_experiment :exp_3
ab_finished :my_metric
end
it "passes reset option" do
Split.configuration.experiments = {
my_exp: {
alternatives: ["one", "two"],
metric: :my_metric,
resettable: false,
}
}
alternative_name = ab_test(:my_exp)
exp = Split::ExperimentCatalog.find :my_exp
ab_finished :my_metric
expect(ab_user[exp.key]).to eq(alternative_name)
expect(ab_user[exp.finished_key]).to be_truthy
end
it "passes through options" do
Split.configuration.experiments = {
my_exp: {
alternatives: ["one", "two"],
metric: :my_metric,
}
}
alternative_name = ab_test(:my_exp)
exp = Split::ExperimentCatalog.find :my_exp
ab_finished :my_metric, reset: false
expect(ab_user[exp.key]).to eq(alternative_name)
expect(ab_user[exp.finished_key]).to be_truthy
end
end
describe "conversions" do
it "should return a conversion rate for an alternative" do
alternative_name = ab_test("link_color", "blue", "red")
previous_convertion_rate = Split::Alternative.new(alternative_name, "link_color").conversion_rate
expect(previous_convertion_rate).to eq(0.0)
ab_finished("link_color")
new_convertion_rate = Split::Alternative.new(alternative_name, "link_color").conversion_rate
expect(new_convertion_rate).to eq(1.0)
end
end
describe "active experiments" do
it "should show an active test" do
alternative = ab_test("def", "4", "5", "6")
expect(active_experiments.count).to eq 1
expect(active_experiments.first[0]).to eq "def"
expect(active_experiments.first[1]).to eq alternative
end
it "should show a finished test" do
alternative = ab_test("def", "4", "5", "6")
ab_finished("def", { reset: false })
expect(active_experiments.count).to eq 1
expect(active_experiments.first[0]).to eq "def"
expect(active_experiments.first[1]).to eq alternative
end
it "should show an active test when an experiment is on a later version" do
experiment.reset
expect(experiment.version).to eq(1)
ab_test("link_color", "blue", "red")
expect(active_experiments.count).to eq 1
expect(active_experiments.first[0]).to eq "link_color"
end
it "should show versioned tests properly" do
10.times { experiment.reset }
alternative = ab_test(experiment.name, "blue", "red")
ab_finished(experiment.name, reset: false)
expect(experiment.version).to eq(10)
expect(active_experiments.count).to eq 1
expect(active_experiments).to eq({ "link_color" => alternative })
end
it "should show multiple tests" do
Split.configure do |config|
config.allow_multiple_experiments = true
end
alternative = ab_test("def", "4", "5", "6")
another_alternative = ab_test("ghi", "7", "8", "9")
expect(active_experiments.count).to eq 2
expect(active_experiments["def"]).to eq alternative
expect(active_experiments["ghi"]).to eq another_alternative
end
it "should not show tests with winners" do
Split.configure do |config|
config.allow_multiple_experiments = true
end
e = Split::ExperimentCatalog.find_or_create("def", "4", "5", "6")
e.winner = "4"
ab_test("def", "4", "5", "6")
another_alternative = ab_test("ghi", "7", "8", "9")
expect(active_experiments.count).to eq 1
expect(active_experiments.first[0]).to eq "ghi"
expect(active_experiments.first[1]).to eq another_alternative
end
end
describe "when user is a robot" do
before(:each) do
@request = OpenStruct.new(user_agent: "Googlebot/2.1 (+http://www.google.com/bot.html)")
end
describe "ab_test" do
it "should return the control" do
alternative = ab_test("link_color", "blue", "red")
expect(alternative).to eq experiment.control.name
end
it "should not create a experiment" do
ab_test("link_color", "blue", "red")
expect(Split::Experiment.new("link_color")).to be_a_new_record
end
it "should not increment the participation count" do
previous_red_count = Split::Alternative.new("red", "link_color").participant_count
previous_blue_count = Split::Alternative.new("blue", "link_color").participant_count
ab_test("link_color", "blue", "red")
new_red_count = Split::Alternative.new("red", "link_color").participant_count
new_blue_count = Split::Alternative.new("blue", "link_color").participant_count
expect((new_red_count + new_blue_count)).to eq(previous_red_count + previous_blue_count)
end
end
describe "finished" do
it "should not increment the completed count" do
alternative_name = ab_test("link_color", "blue", "red")
previous_completion_count = Split::Alternative.new(alternative_name, "link_color").completed_count
ab_finished("link_color")
new_completion_count = Split::Alternative.new(alternative_name, "link_color").completed_count
expect(new_completion_count).to eq(previous_completion_count)
end
end
end
describe "when providing custom ignore logic" do
context "using a proc to configure custom logic" do
before(:each) do
Split.configure do |c|
c.ignore_filter = proc { |request| true } # ignore everything
end
end
it "ignores the ab_test" do
ab_test("link_color", "blue", "red")
red_count = Split::Alternative.new("red", "link_color").participant_count
blue_count = Split::Alternative.new("blue", "link_color").participant_count
expect((red_count + blue_count)).to be(0)
end
end
end
shared_examples_for "a disabled test" do
describe "ab_test" do
it "should return the control" do
alternative = ab_test("link_color", "blue", "red")
expect(alternative).to eq experiment.control.name
end
it "should not increment the participation count" do
previous_red_count = Split::Alternative.new("red", "link_color").participant_count
previous_blue_count = Split::Alternative.new("blue", "link_color").participant_count
ab_test("link_color", "blue", "red")
new_red_count = Split::Alternative.new("red", "link_color").participant_count
new_blue_count = Split::Alternative.new("blue", "link_color").participant_count
expect((new_red_count + new_blue_count)).to eq(previous_red_count + previous_blue_count)
end
end
describe "finished" do
it "should not increment the completed count" do
alternative_name = ab_test("link_color", "blue", "red")
previous_completion_count = Split::Alternative.new(alternative_name, "link_color").completed_count
ab_finished("link_color")
new_completion_count = Split::Alternative.new(alternative_name, "link_color").completed_count
expect(new_completion_count).to eq(previous_completion_count)
end
end
end
describe "when ip address is ignored" do
context "individually" do
before(:each) do
@request = OpenStruct.new(ip: "81.19.48.130")
Split.configure do |c|
c.ignore_ip_addresses << "81.19.48.130"
end
end
it_behaves_like "a disabled test"
end
context "for a range" do
before(:each) do
@request = OpenStruct.new(ip: "81.19.48.129")
Split.configure do |c|
c.ignore_ip_addresses << /81\.19\.48\.[0-9]+/
end
end
it_behaves_like "a disabled test"
end
context "using both a range and a specific value" do
before(:each) do
@request = OpenStruct.new(ip: "81.19.48.128")
Split.configure do |c|
c.ignore_ip_addresses << "81.19.48.130"
c.ignore_ip_addresses << /81\.19\.48\.[0-9]+/
end
end
it_behaves_like "a disabled test"
end
context "when ignored other address" do
before do
@request = OpenStruct.new(ip: "1.1.1.1")
Split.configure do |c|
c.ignore_ip_addresses << "81.19.48.130"
end
end
it "works as usual" do
alternative_name = ab_test("link_color", "red", "blue")
expect {
ab_finished("link_color")
}.to change(Split::Alternative.new(alternative_name, "link_color"), :completed_count).by(1)
end
end
end
describe "when user is previewing" do
before(:each) do
@request = OpenStruct.new(headers: { "x-purpose" => "preview" })
end
it_behaves_like "a disabled test"
end
describe "versioned experiments" do
it "should use version zero if no version is present" do
alternative_name = ab_test("link_color", "blue", "red")
expect(experiment.version).to eq(0)
expect(ab_user["link_color"]).to eq(alternative_name)
end
it "should save the version of the experiment to the session" do
experiment.reset
expect(experiment.version).to eq(1)
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color:1"]).to eq(alternative_name)
end
it "should load the experiment even if the version is not 0" do
experiment.reset
expect(experiment.version).to eq(1)
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color:1"]).to eq(alternative_name)
return_alternative_name = ab_test("link_color", "blue", "red")
expect(return_alternative_name).to eq(alternative_name)
end
it "should reset the session of a user on an older version of the experiment" do
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color"]).to eq(alternative_name)
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.participant_count).to eq(1)
experiment.reset
expect(experiment.version).to eq(1)
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.participant_count).to eq(0)
new_alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color:1"]).to eq(new_alternative_name)
new_alternative = Split::Alternative.new(new_alternative_name, "link_color")
expect(new_alternative.participant_count).to eq(1)
end
it "should cleanup old versions of experiments from the session" do
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color"]).to eq(alternative_name)
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.participant_count).to eq(1)
experiment.reset
expect(experiment.version).to eq(1)
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.participant_count).to eq(0)
new_alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color:1"]).to eq(new_alternative_name)
end
it "should only count completion of users on the current version" do
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color"]).to eq(alternative_name)
Split::Alternative.new(alternative_name, "link_color")
experiment.reset
expect(experiment.version).to eq(1)
ab_finished("link_color")
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.completed_count).to eq(0)
end
end
context "when redis is not available" do
before(:each) do
expect(Split).to receive(:redis).at_most(5).times.and_raise(Errno::ECONNREFUSED.new)
end
context "and db_failover config option is turned off" do
before(:each) do
Split.configure do |config|
config.db_failover = false
end
end
describe "ab_test" do
it "should raise an exception" do
expect { ab_test("link_color", "blue", "red") }.to raise_error(Errno::ECONNREFUSED)
end
end
describe "finished" do
it "should raise an exception" do
expect { ab_finished("link_color") }.to raise_error(Errno::ECONNREFUSED)
end
end
describe "disable split testing" do
before(:each) do
Split.configure do |config|
config.enabled = false
end
end
it "should not attempt to connect to redis" do
expect { ab_test("link_color", "blue", "red") }.not_to raise_error
end
it "should return control variable" do
expect(ab_test("link_color", "blue", "red")).to eq("blue")
expect { ab_finished("link_color") }.not_to raise_error
end
end
end
context "and db_failover config option is turned on" do
before(:each) do
Split.configure do |config|
config.db_failover = true
end
end
describe "ab_test" do
it "should not raise an exception" do
expect { ab_test("link_color", "blue", "red") }.not_to raise_error
end
it "should call db_failover_on_db_error proc with error as parameter" do
Split.configure do |config|
config.db_failover_on_db_error = proc do |error|
expect(error).to be_a(Errno::ECONNREFUSED)
end
end
expect(Split.configuration.db_failover_on_db_error).to receive(:call).and_call_original
ab_test("link_color", "blue", "red")
end
it "should always use first alternative" do
expect(ab_test("link_color", "blue", "red")).to eq("blue")
expect(ab_test("link_color", { "blue" => 0.01 }, "red" => 0.2)).to eq("blue")
expect(ab_test("link_color", { "blue" => 0.8 }, { "red" => 20 })).to eq("blue")
expect(ab_test("link_color", "blue", "red") do |alternative|
"shared/#{alternative}"
end).to eq("shared/blue")
end
context "and db_failover_allow_parameter_override config option is turned on" do
before(:each) do
Split.configure do |config|
config.db_failover_allow_parameter_override = true
end
end
context "and given an override parameter" do
it "should use given override instead of the first alternative" do
@params = { "ab_test" => { "link_color" => "red" } }
expect(ab_test("link_color", "blue", "red")).to eq("red")
expect(ab_test("link_color", "blue", "red", "green")).to eq("red")
expect(ab_test("link_color", { "blue" => 0.01 }, "red" => 0.2)).to eq("red")
expect(ab_test("link_color", { "blue" => 0.8 }, { "red" => 20 })).to eq("red")
expect(ab_test("link_color", "blue", "red") do |alternative|
"shared/#{alternative}"
end).to eq("shared/red")
end
end
end
context "and preloaded config given" do
before do
Split.configuration.experiments[:link_color] = {
alternatives: [ "blue", "red" ],
}
end
it "uses first alternative" do
expect(ab_test(:link_color)).to eq("blue")
end
end
end
describe "finished" do
it "should not raise an exception" do
expect { ab_finished("link_color") }.not_to raise_error
end
it "should call db_failover_on_db_error proc with error as parameter" do
Split.configure do |config|
config.db_failover_on_db_error = proc do |error|
expect(error).to be_a(Errno::ECONNREFUSED)
end
end
expect(Split.configuration.db_failover_on_db_error).to receive(:call).and_call_original
ab_finished("link_color")
end
end
end
end
context "with preloaded config" do
before { Split.configuration.experiments = {} }
it "pulls options from config file" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ],
goals: ["goal1", "goal2"]
}
ab_test :my_experiment
expect(Split::Experiment.new(:my_experiment).alternatives.map(&:name)).to eq([ "control_opt", "other_opt" ])
expect(Split::Experiment.new(:my_experiment).goals).to eq([ "goal1", "goal2" ])
end
it "can be called multiple times" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ],
goals: ["goal1", "goal2"]
}
5.times { ab_test :my_experiment }
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.alternatives.map(&:name)).to eq([ "control_opt", "other_opt" ])
expect(experiment.goals).to eq([ "goal1", "goal2" ])
expect(experiment.participant_count).to eq(1)
end
it "accepts multiple goals" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ],
goals: [ "goal1", "goal2", "goal3" ]
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.goals).to eq([ "goal1", "goal2", "goal3" ])
end
it "allow specifying goals to be optional" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ]
}
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.goals).to eq([])
end
it "accepts multiple alternatives" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "second_opt", "third_opt" ],
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.alternatives.map(&:name)).to eq([ "control_opt", "second_opt", "third_opt" ])
end
it "accepts probability on alternatives" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
],
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.alternatives.collect { |a| [a.name, a.weight] }).to eq([["control_opt", 0.67], ["second_opt", 0.1], ["third_opt", 0.23]])
end
it "accepts probability on some alternatives" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [
{ name: "control_opt", percent: 34 },
"second_opt",
{ name: "third_opt", percent: 23 },
"fourth_opt",
],
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
names_and_weights = experiment.alternatives.collect { |a| [a.name, a.weight] }
expect(names_and_weights).to eq([["control_opt", 0.34], ["second_opt", 0.215], ["third_opt", 0.23], ["fourth_opt", 0.215]])
expect(names_and_weights.inject(0) { |sum, nw| sum + nw[1] }).to eq(1.0)
end
it "allows name param without probability" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [
{ name: "control_opt" },
"second_opt",
{ name: "third_opt", percent: 64 },
],
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
names_and_weights = experiment.alternatives.collect { |a| [a.name, a.weight] }
expect(names_and_weights).to eq([["control_opt", 0.18], ["second_opt", 0.18], ["third_opt", 0.64]])
expect(names_and_weights.inject(0) { |sum, nw| sum + nw[1] }).to eq(1.0)
end
it "fails gracefully if config is missing experiment" do
Split.configuration.experiments = { other_experiment: { foo: "Bar" } }
expect { ab_test :my_experiment }.to raise_error(Split::ExperimentNotFound)
end
it "fails gracefully if config is missing" do
expect { Split.configuration.experiments = nil }.to raise_error(Split::InvalidExperimentsFormatError)
end
it "fails gracefully if config is missing alternatives" do
Split.configuration.experiments[:my_experiment] = { foo: "Bar" }
expect { ab_test :my_experiment }.to raise_error(NoMethodError)
end
end
it "should handle multiple experiments correctly" do
experiment2 = Split::ExperimentCatalog.find_or_create("link_color2", "blue", "red")
ab_test("link_color", "blue", "red")
ab_test("link_color2", "blue", "red")
ab_finished("link_color2")
experiment2.alternatives.each do |alt|
expect(alt.unfinished_count).to eq(0)
end
end
context "with goals" do
before do
@experiment = { "link_color" => ["purchase", "refund"] }
@alternatives = ["blue", "red"]
@experiment_name, @goals = normalize_metric(@experiment)
@goal1 = @goals[0]
@goal2 = @goals[1]
end
it "should normalize experiment" do
expect(@experiment_name).to eq("link_color")
expect(@goals).to eq(["purchase", "refund"])
end
describe "ab_test" do
it "should allow experiment goals interface as a single hash" do
ab_test(@experiment, *@alternatives)
experiment = Split::ExperimentCatalog.find("link_color")
expect(experiment.goals).to eq(["purchase", "refund"])
end
end
describe "ab_finished" do
before do
@alternative_name = ab_test(@experiment, *@alternatives)
end
it "should increment the counter for the specified-goal completed alternative" do
expect { ab_finished({ "link_color" => ["purchase"] }) }
.to change { Split::Alternative.new(@alternative_name, @experiment_name).completed_count(@goal2) }.by(0)
.and change { Split::Alternative.new(@alternative_name, @experiment_name).completed_count(@goal1) }.by(1)
end
end
end
end
<MSG> Merge pull request #173 from wimdu/storing_overrided_test_group
Adding possibility to store overridden alternative
<DFF> @@ -96,6 +96,22 @@ describe Split::Helper do
alternative.should eql('red')
end
+ it "should not store the via params forced alternative" do
+ @params = {'link_color' => 'blue'}
+ ab_user.should_not_receive(:[]=)
+ ab_test('link_color', 'blue', 'red')
+ end
+
+ context "when store_override is set" do
+ before { Split.configuration.store_override = true }
+
+ it "should store the forced alternative" do
+ @params = {'link_color' => 'blue'}
+ ab_user.should_receive(:[]=).with('link_color', 'blue')
+ ab_test('link_color', 'blue', 'red')
+ end
+ end
+
it "should allow passing a block" do
alt = ab_test('link_color', 'blue', 'red')
ret = ab_test('link_color', 'blue', 'red') { |alternative| "shared/#{alternative}" }
| 16 | Merge pull request #173 from wimdu/storing_overrided_test_group | 0 | .rb | rb | mit | splitrb/split |
10070902 | <NME> helper_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
# TODO change some of these tests to use Rack::Test
describe Split::Helper do
include Split::Helper
let(:experiment) {
Split::ExperimentCatalog.find_or_create("link_color", "blue", "red")
}
describe "ab_test" do
it "should not raise an error when passed strings for alternatives" do
expect { ab_test("xyz", "1", "2", "3") }.not_to raise_error
end
it "should not raise an error when passed an array for alternatives" do
expect { ab_test("xyz", ["1", "2", "3"]) }.not_to raise_error
end
it "should raise the appropriate error when passed integers for alternatives" do
expect { ab_test("xyz", 1, 2, 3) }.to raise_error(ArgumentError)
end
it "should raise the appropriate error when passed symbols for alternatives" do
expect { ab_test("xyz", :a, :b, :c) }.to raise_error(ArgumentError)
end
it "should not raise error when passed an array for goals" do
expect { ab_test({ "link_color" => ["purchase", "refund"] }, "blue", "red") }.not_to raise_error
end
it "should not raise error when passed just one goal" do
expect { ab_test({ "link_color" => "purchase" }, "blue", "red") }.not_to raise_error
end
it "raises an appropriate error when processing combined expirements" do
Split.configuration.experiments = {
combined_exp_1: {
alternatives: [ { name: "control", percent: 50 }, { name: "test-alt", percent: 50 } ],
metric: :my_metric,
combined_experiments: [:combined_exp_1_sub_1]
}
}
Split::ExperimentCatalog.find_or_create("combined_exp_1")
expect { ab_test("combined_exp_1") }.to raise_error(Split::InvalidExperimentsFormatError)
end
it "should assign a random alternative to a new user when there are an equal number of alternatives assigned" do
ab_test("link_color", "blue", "red")
expect(["red", "blue"]).to include(ab_user["link_color"])
end
it "should increment the participation counter after assignment to a new user" do
previous_red_count = Split::Alternative.new("red", "link_color").participant_count
previous_blue_count = Split::Alternative.new("blue", "link_color").participant_count
ab_test("link_color", "blue", "red")
new_red_count = Split::Alternative.new("red", "link_color").participant_count
new_blue_count = Split::Alternative.new("blue", "link_color").participant_count
expect((new_red_count + new_blue_count)).to eq(previous_red_count + previous_blue_count + 1)
end
it "should not increment the counter for an experiment that the user is not participating in" do
ab_test("link_color", "blue", "red")
e = Split::ExperimentCatalog.find_or_create("button_size", "small", "big")
expect {
# User shouldn't participate in this second experiment
ab_test("button_size", "small", "big")
}.not_to change { e.participant_count }
end
it "should not increment the counter for an ended experiment" do
e = Split::ExperimentCatalog.find_or_create("button_size", "small", "big")
e.winner = "small"
expect {
a = ab_test("button_size", "small", "big")
expect(a).to eq("small")
}.not_to change { e.participant_count }
end
it "should not increment the counter for an not started experiment" do
expect(Split.configuration).to receive(:start_manually).and_return(true)
e = Split::ExperimentCatalog.find_or_create("button_size", "small", "big")
expect {
a = ab_test("button_size", "small", "big")
expect(a).to eq("small")
}.not_to change { e.participant_count }
end
it "should return the given alternative for an existing user" do
alternative.should eql('red')
end
it "should allow passing a block" do
alt = ab_test('link_color', 'blue', 'red')
ret = ab_test('link_color', 'blue', 'red') { |alternative| "shared/#{alternative}" }
expect(alternative).to eq("red")
alternative = ab_test("link_color", { "blue" => 5 }, "red" => 1)
expect(alternative).to eq("red")
end
it "should not allow an arbitrary alternative" do
@params = { "ab_test" => { "link_color" => "pink" } }
alternative = ab_test("link_color", "blue")
expect(alternative).to eq("blue")
end
it "should not store the split when a param forced alternative" do
@params = { "ab_test" => { "link_color" => "blue" } }
expect(ab_user).not_to receive(:[]=)
ab_test("link_color", "blue", "red")
end
it "SPLIT_DISABLE query parameter should also force the alternative (uses control)" do
@params = { "SPLIT_DISABLE" => "true" }
alternative = ab_test("link_color", "blue", "red")
expect(alternative).to eq("blue")
alternative = ab_test("link_color", { "blue" => 1 }, "red" => 5)
expect(alternative).to eq("blue")
alternative = ab_test("link_color", "red", "blue")
expect(alternative).to eq("red")
alternative = ab_test("link_color", { "red" => 5 }, "blue" => 1)
expect(alternative).to eq("red")
end
it "should not store the split when Split generically disabled" do
@params = { "SPLIT_DISABLE" => "true" }
expect(ab_user).not_to receive(:[]=)
ab_test("link_color", "blue", "red")
end
context "when store_override is set" do
before { Split.configuration.store_override = true }
it "should store the forced alternative" do
@params = { "ab_test" => { "link_color" => "blue" } }
expect(ab_user).to receive(:[]=).with("link_color", "blue")
ab_test("link_color", "blue", "red")
end
end
context "when on_trial_choose is set" do
before { Split.configuration.on_trial_choose = :some_method }
it "should call the method" do
expect(self).to receive(:some_method)
ab_test("link_color", "blue", "red")
end
end
it "should allow passing a block" do
alt = ab_test("link_color", "blue", "red")
ret = ab_test("link_color", "blue", "red") { |alternative| "shared/#{alternative}" }
expect(ret).to eq("shared/#{alt}")
end
it "should allow the share of visitors see an alternative to be specified" do
ab_test("link_color", { "blue" => 0.8 }, { "red" => 20 })
expect(["red", "blue"]).to include(ab_user["link_color"])
end
it "should allow alternative weighting interface as a single hash" do
ab_test("link_color", { "blue" => 0.01 }, "red" => 0.2)
experiment = Split::ExperimentCatalog.find("link_color")
expect(experiment.alternatives.map(&:name)).to eq(["blue", "red"])
expect(experiment.alternatives.collect { |a| a.weight }).to match_array([0.01, 0.2])
end
it "should only let a user participate in one experiment at a time" do
link_color = ab_test("link_color", "blue", "red")
ab_test("button_size", "small", "big")
expect(ab_user["link_color"]).to eq(link_color)
big = Split::Alternative.new("big", "button_size")
expect(big.participant_count).to eq(0)
small = Split::Alternative.new("small", "button_size")
expect(small.participant_count).to eq(0)
end
it "should let a user participate in many experiment with allow_multiple_experiments option" do
Split.configure do |config|
config.allow_multiple_experiments = true
end
link_color = ab_test("link_color", "blue", "red")
button_size = ab_test("button_size", "small", "big")
expect(ab_user["link_color"]).to eq(link_color)
expect(ab_user["button_size"]).to eq(button_size)
button_size_alt = Split::Alternative.new(button_size, "button_size")
expect(button_size_alt.participant_count).to eq(1)
end
context "with allow_multiple_experiments = 'control'" do
it "should let a user participate in many experiment with one non-'control' alternative" do
Split.configure do |config|
config.allow_multiple_experiments = "control"
end
groups = 100.times.map do |n|
ab_test("test#{n}".to_sym, { "control" => (100 - n) }, { "test#{n}-alt" => n })
end
experiments = ab_user.active_experiments
expect(experiments.size).to be > 1
count_control = experiments.values.count { |g| g == "control" }
expect(count_control).to eq(experiments.size - 1)
count_alts = groups.count { |g| g != "control" }
expect(count_alts).to eq(1)
end
context "when user already has experiment" do
let(:mock_user) { Split::User.new(self, { "test_0" => "test-alt" }) }
before do
Split.configure do |config|
config.allow_multiple_experiments = "control"
end
Split::ExperimentCatalog.find_or_initialize("test_0", "control", "test-alt").save
Split::ExperimentCatalog.find_or_initialize("test_1", "control", "test-alt").save
end
it "should restore previously selected alternative" do
expect(ab_user.active_experiments.size).to eq 1
expect(ab_test(:test_0, { "control" => 100 }, { "test-alt" => 1 })).to eq "test-alt"
expect(ab_test(:test_0, { "control" => 1 }, { "test-alt" => 100 })).to eq "test-alt"
end
it "should select the correct alternatives after experiment resets" do
experiment = Split::ExperimentCatalog.find(:test_0)
experiment.reset
mock_user[experiment.key] = "test-alt"
expect(ab_user.active_experiments.size).to eq 1
expect(ab_test(:test_0, { "control" => 100 }, { "test-alt" => 1 })).to eq "test-alt"
expect(ab_test(:test_0, { "control" => 0 }, { "test-alt" => 100 })).to eq "test-alt"
end
it "lets override existing choice" do
pending "this requires user store reset on first call not depending on whelther it is current trial"
@params = { "ab_test" => { "test_1" => "test-alt" } }
expect(ab_test(:test_0, { "control" => 0 }, { "test-alt" => 100 })).to eq "control"
expect(ab_test(:test_1, { "control" => 100 }, { "test-alt" => 1 })).to eq "test-alt"
end
end
end
it "should not over-write a finished key when an experiment is on a later version" do
experiment.increment_version
ab_user = { experiment.key => "blue", experiment.finished_key => true }
finished_session = ab_user.dup
ab_test("link_color", "blue", "red")
expect(ab_user).to eq(finished_session)
end
end
describe "metadata" do
context "is defined" do
before do
Split.configuration.experiments = {
my_experiment: {
alternatives: ["one", "two"],
resettable: false,
metadata: { "one" => "Meta1", "two" => "Meta2" }
}
}
end
it "should be passed to helper block" do
@params = { "ab_test" => { "my_experiment" => "two" } }
expect(ab_test("my_experiment")).to eq "two"
expect(ab_test("my_experiment") do |alternative, meta|
meta
end).to eq("Meta2")
end
it "should pass control metadata helper block if library disabled" do
Split.configure do |config|
config.enabled = false
end
expect(ab_test("my_experiment")).to eq "one"
expect(ab_test("my_experiment") do |_, meta|
meta
end).to eq("Meta1")
end
end
context "is not defined" do
before do
Split.configuration.experiments = {
my_experiment: {
alternatives: ["one", "two"],
resettable: false,
metadata: nil
}
}
end
it "should be passed to helper block" do
expect(ab_test("my_experiment") do |alternative, meta|
meta
end).to eq({})
end
it "should pass control metadata helper block if library disabled" do
Split.configure do |config|
config.enabled = false
end
expect(ab_test("my_experiment") do |_, meta|
meta
end).to eq({})
end
end
end
describe "ab_finished" do
context "for an experiment that the user participates in" do
before(:each) do
@experiment_name = "link_color"
@alternatives = ["blue", "red"]
@experiment = Split::ExperimentCatalog.find_or_create(@experiment_name, *@alternatives)
@alternative_name = ab_test(@experiment_name, *@alternatives)
@previous_completion_count = Split::Alternative.new(@alternative_name, @experiment_name).completed_count
end
it "should increment the counter for the completed alternative" do
ab_finished(@experiment_name)
new_completion_count = Split::Alternative.new(@alternative_name, @experiment_name).completed_count
expect(new_completion_count).to eq(@previous_completion_count + 1)
end
it "should set experiment's finished key if reset is false" do
ab_finished(@experiment_name, { reset: false })
expect(ab_user[@experiment.key]).to eq(@alternative_name)
expect(ab_user[@experiment.finished_key]).to eq(true)
end
it "should not increment the counter if reset is false and the experiment has been already finished" do
2.times { ab_finished(@experiment_name, { reset: false }) }
new_completion_count = Split::Alternative.new(@alternative_name, @experiment_name).completed_count
expect(new_completion_count).to eq(@previous_completion_count + 1)
end
it "should not increment the counter for an ended experiment" do
e = Split::ExperimentCatalog.find_or_create("button_size", "small", "big")
e.winner = "small"
a = ab_test("button_size", "small", "big")
expect(a).to eq("small")
expect {
ab_finished("button_size")
}.not_to change { Split::Alternative.new(a, "button_size").completed_count }
end
it "should clear out the user's participation from their session" do
expect(ab_user[@experiment.key]).to eq(@alternative_name)
ab_finished(@experiment_name)
expect(ab_user.keys).to be_empty
end
it "should not clear out the users session if reset is false" do
expect(ab_user[@experiment.key]).to eq(@alternative_name)
ab_finished(@experiment_name, { reset: false })
expect(ab_user[@experiment.key]).to eq(@alternative_name)
expect(ab_user[@experiment.finished_key]).to eq(true)
end
it "should reset the users session when experiment is not versioned" do
expect(ab_user[@experiment.key]).to eq(@alternative_name)
ab_finished(@experiment_name)
expect(ab_user.keys).to be_empty
end
it "should reset the users session when experiment is versioned" do
@experiment.increment_version
@alternative_name = ab_test(@experiment_name, *@alternatives)
expect(ab_user[@experiment.key]).to eq(@alternative_name)
ab_finished(@experiment_name)
expect(ab_user.keys).to be_empty
end
context "when on_trial_complete is set" do
before { Split.configuration.on_trial_complete = :some_method }
it "should call the method" do
expect(self).to receive(:some_method)
ab_finished(@experiment_name)
end
it "should not call the method without alternative" do
ab_user[@experiment.key] = nil
expect(self).not_to receive(:some_method)
ab_finished(@experiment_name)
end
end
end
context "for an experiment that the user is excluded from" do
before do
alternative = ab_test("link_color", "blue", "red")
expect(Split::Alternative.new(alternative, "link_color").participant_count).to eq(1)
alternative = ab_test("button_size", "small", "big")
expect(Split::Alternative.new(alternative, "button_size").participant_count).to eq(0)
end
it "should not increment the completed counter" do
# So, user should be participating in the link_color experiment and
# receive the control for button_size. As the user is not participating in
# the button size experiment, finishing it should not increase the
# completion count for that alternative.
expect {
ab_finished("button_size")
}.not_to change { Split::Alternative.new("small", "button_size").completed_count }
end
end
context "for an experiment that the user does not participate in" do
before do
Split::ExperimentCatalog.find_or_create(:not_started_experiment, "control", "alt")
end
it "should not raise an exception" do
expect { ab_finished(:not_started_experiment) }.not_to raise_exception
end
it "should not change the user state when reset is false" do
expect { ab_finished(:not_started_experiment, reset: false) }.not_to change { ab_user.keys }.from([])
end
it "should not change the user state when reset is true" do
expect(self).not_to receive(:reset!)
ab_finished(:not_started_experiment)
end
it "should not increment the completed counter" do
ab_finished(:not_started_experiment)
expect(Split::Alternative.new("control", :not_started_experiment).completed_count).to eq(0)
expect(Split::Alternative.new("alt", :not_started_experiment).completed_count).to eq(0)
end
end
end
context "finished with config" do
it "passes reset option" do
Split.configuration.experiments = {
my_experiment: {
alternatives: ["one", "two"],
resettable: false,
}
}
alternative = ab_test(:my_experiment)
experiment = Split::ExperimentCatalog.find :my_experiment
ab_finished :my_experiment
expect(ab_user[experiment.key]).to eq(alternative)
expect(ab_user[experiment.finished_key]).to eq(true)
end
end
context "finished with metric name" do
before { Split.configuration.experiments = {} }
before { expect(Split::Alternative).to receive(:new).at_least(1).times.and_call_original }
def should_finish_experiment(experiment_name, should_finish = true)
alts = Split.configuration.experiments[experiment_name][:alternatives]
experiment = Split::ExperimentCatalog.find_or_create(experiment_name, *alts)
alt_name = ab_user[experiment.key] = alts.first
alt = double("alternative")
expect(alt).to receive(:name).at_most(1).times.and_return(alt_name)
expect(Split::Alternative).to receive(:new).at_most(1).times.with(alt_name, experiment_name.to_s).and_return(alt)
if should_finish
expect(alt).to receive(:increment_completion).at_most(1).times
else
expect(alt).not_to receive(:increment_completion)
end
end
it "completes the test" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ],
metric: :my_metric
}
should_finish_experiment :my_experiment
ab_finished :my_metric
end
it "completes all relevant tests" do
Split.configuration.experiments = {
exp_1: {
alternatives: [ "1-1", "1-2" ],
metric: :my_metric
},
exp_2: {
alternatives: [ "2-1", "2-2" ],
metric: :another_metric
},
exp_3: {
alternatives: [ "3-1", "3-2" ],
metric: :my_metric
},
}
should_finish_experiment :exp_1
should_finish_experiment :exp_2, false
should_finish_experiment :exp_3
ab_finished :my_metric
end
it "passes reset option" do
Split.configuration.experiments = {
my_exp: {
alternatives: ["one", "two"],
metric: :my_metric,
resettable: false,
}
}
alternative_name = ab_test(:my_exp)
exp = Split::ExperimentCatalog.find :my_exp
ab_finished :my_metric
expect(ab_user[exp.key]).to eq(alternative_name)
expect(ab_user[exp.finished_key]).to be_truthy
end
it "passes through options" do
Split.configuration.experiments = {
my_exp: {
alternatives: ["one", "two"],
metric: :my_metric,
}
}
alternative_name = ab_test(:my_exp)
exp = Split::ExperimentCatalog.find :my_exp
ab_finished :my_metric, reset: false
expect(ab_user[exp.key]).to eq(alternative_name)
expect(ab_user[exp.finished_key]).to be_truthy
end
end
describe "conversions" do
it "should return a conversion rate for an alternative" do
alternative_name = ab_test("link_color", "blue", "red")
previous_convertion_rate = Split::Alternative.new(alternative_name, "link_color").conversion_rate
expect(previous_convertion_rate).to eq(0.0)
ab_finished("link_color")
new_convertion_rate = Split::Alternative.new(alternative_name, "link_color").conversion_rate
expect(new_convertion_rate).to eq(1.0)
end
end
describe "active experiments" do
it "should show an active test" do
alternative = ab_test("def", "4", "5", "6")
expect(active_experiments.count).to eq 1
expect(active_experiments.first[0]).to eq "def"
expect(active_experiments.first[1]).to eq alternative
end
it "should show a finished test" do
alternative = ab_test("def", "4", "5", "6")
ab_finished("def", { reset: false })
expect(active_experiments.count).to eq 1
expect(active_experiments.first[0]).to eq "def"
expect(active_experiments.first[1]).to eq alternative
end
it "should show an active test when an experiment is on a later version" do
experiment.reset
expect(experiment.version).to eq(1)
ab_test("link_color", "blue", "red")
expect(active_experiments.count).to eq 1
expect(active_experiments.first[0]).to eq "link_color"
end
it "should show versioned tests properly" do
10.times { experiment.reset }
alternative = ab_test(experiment.name, "blue", "red")
ab_finished(experiment.name, reset: false)
expect(experiment.version).to eq(10)
expect(active_experiments.count).to eq 1
expect(active_experiments).to eq({ "link_color" => alternative })
end
it "should show multiple tests" do
Split.configure do |config|
config.allow_multiple_experiments = true
end
alternative = ab_test("def", "4", "5", "6")
another_alternative = ab_test("ghi", "7", "8", "9")
expect(active_experiments.count).to eq 2
expect(active_experiments["def"]).to eq alternative
expect(active_experiments["ghi"]).to eq another_alternative
end
it "should not show tests with winners" do
Split.configure do |config|
config.allow_multiple_experiments = true
end
e = Split::ExperimentCatalog.find_or_create("def", "4", "5", "6")
e.winner = "4"
ab_test("def", "4", "5", "6")
another_alternative = ab_test("ghi", "7", "8", "9")
expect(active_experiments.count).to eq 1
expect(active_experiments.first[0]).to eq "ghi"
expect(active_experiments.first[1]).to eq another_alternative
end
end
describe "when user is a robot" do
before(:each) do
@request = OpenStruct.new(user_agent: "Googlebot/2.1 (+http://www.google.com/bot.html)")
end
describe "ab_test" do
it "should return the control" do
alternative = ab_test("link_color", "blue", "red")
expect(alternative).to eq experiment.control.name
end
it "should not create a experiment" do
ab_test("link_color", "blue", "red")
expect(Split::Experiment.new("link_color")).to be_a_new_record
end
it "should not increment the participation count" do
previous_red_count = Split::Alternative.new("red", "link_color").participant_count
previous_blue_count = Split::Alternative.new("blue", "link_color").participant_count
ab_test("link_color", "blue", "red")
new_red_count = Split::Alternative.new("red", "link_color").participant_count
new_blue_count = Split::Alternative.new("blue", "link_color").participant_count
expect((new_red_count + new_blue_count)).to eq(previous_red_count + previous_blue_count)
end
end
describe "finished" do
it "should not increment the completed count" do
alternative_name = ab_test("link_color", "blue", "red")
previous_completion_count = Split::Alternative.new(alternative_name, "link_color").completed_count
ab_finished("link_color")
new_completion_count = Split::Alternative.new(alternative_name, "link_color").completed_count
expect(new_completion_count).to eq(previous_completion_count)
end
end
end
describe "when providing custom ignore logic" do
context "using a proc to configure custom logic" do
before(:each) do
Split.configure do |c|
c.ignore_filter = proc { |request| true } # ignore everything
end
end
it "ignores the ab_test" do
ab_test("link_color", "blue", "red")
red_count = Split::Alternative.new("red", "link_color").participant_count
blue_count = Split::Alternative.new("blue", "link_color").participant_count
expect((red_count + blue_count)).to be(0)
end
end
end
shared_examples_for "a disabled test" do
describe "ab_test" do
it "should return the control" do
alternative = ab_test("link_color", "blue", "red")
expect(alternative).to eq experiment.control.name
end
it "should not increment the participation count" do
previous_red_count = Split::Alternative.new("red", "link_color").participant_count
previous_blue_count = Split::Alternative.new("blue", "link_color").participant_count
ab_test("link_color", "blue", "red")
new_red_count = Split::Alternative.new("red", "link_color").participant_count
new_blue_count = Split::Alternative.new("blue", "link_color").participant_count
expect((new_red_count + new_blue_count)).to eq(previous_red_count + previous_blue_count)
end
end
describe "finished" do
it "should not increment the completed count" do
alternative_name = ab_test("link_color", "blue", "red")
previous_completion_count = Split::Alternative.new(alternative_name, "link_color").completed_count
ab_finished("link_color")
new_completion_count = Split::Alternative.new(alternative_name, "link_color").completed_count
expect(new_completion_count).to eq(previous_completion_count)
end
end
end
describe "when ip address is ignored" do
context "individually" do
before(:each) do
@request = OpenStruct.new(ip: "81.19.48.130")
Split.configure do |c|
c.ignore_ip_addresses << "81.19.48.130"
end
end
it_behaves_like "a disabled test"
end
context "for a range" do
before(:each) do
@request = OpenStruct.new(ip: "81.19.48.129")
Split.configure do |c|
c.ignore_ip_addresses << /81\.19\.48\.[0-9]+/
end
end
it_behaves_like "a disabled test"
end
context "using both a range and a specific value" do
before(:each) do
@request = OpenStruct.new(ip: "81.19.48.128")
Split.configure do |c|
c.ignore_ip_addresses << "81.19.48.130"
c.ignore_ip_addresses << /81\.19\.48\.[0-9]+/
end
end
it_behaves_like "a disabled test"
end
context "when ignored other address" do
before do
@request = OpenStruct.new(ip: "1.1.1.1")
Split.configure do |c|
c.ignore_ip_addresses << "81.19.48.130"
end
end
it "works as usual" do
alternative_name = ab_test("link_color", "red", "blue")
expect {
ab_finished("link_color")
}.to change(Split::Alternative.new(alternative_name, "link_color"), :completed_count).by(1)
end
end
end
describe "when user is previewing" do
before(:each) do
@request = OpenStruct.new(headers: { "x-purpose" => "preview" })
end
it_behaves_like "a disabled test"
end
describe "versioned experiments" do
it "should use version zero if no version is present" do
alternative_name = ab_test("link_color", "blue", "red")
expect(experiment.version).to eq(0)
expect(ab_user["link_color"]).to eq(alternative_name)
end
it "should save the version of the experiment to the session" do
experiment.reset
expect(experiment.version).to eq(1)
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color:1"]).to eq(alternative_name)
end
it "should load the experiment even if the version is not 0" do
experiment.reset
expect(experiment.version).to eq(1)
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color:1"]).to eq(alternative_name)
return_alternative_name = ab_test("link_color", "blue", "red")
expect(return_alternative_name).to eq(alternative_name)
end
it "should reset the session of a user on an older version of the experiment" do
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color"]).to eq(alternative_name)
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.participant_count).to eq(1)
experiment.reset
expect(experiment.version).to eq(1)
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.participant_count).to eq(0)
new_alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color:1"]).to eq(new_alternative_name)
new_alternative = Split::Alternative.new(new_alternative_name, "link_color")
expect(new_alternative.participant_count).to eq(1)
end
it "should cleanup old versions of experiments from the session" do
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color"]).to eq(alternative_name)
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.participant_count).to eq(1)
experiment.reset
expect(experiment.version).to eq(1)
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.participant_count).to eq(0)
new_alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color:1"]).to eq(new_alternative_name)
end
it "should only count completion of users on the current version" do
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color"]).to eq(alternative_name)
Split::Alternative.new(alternative_name, "link_color")
experiment.reset
expect(experiment.version).to eq(1)
ab_finished("link_color")
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.completed_count).to eq(0)
end
end
context "when redis is not available" do
before(:each) do
expect(Split).to receive(:redis).at_most(5).times.and_raise(Errno::ECONNREFUSED.new)
end
context "and db_failover config option is turned off" do
before(:each) do
Split.configure do |config|
config.db_failover = false
end
end
describe "ab_test" do
it "should raise an exception" do
expect { ab_test("link_color", "blue", "red") }.to raise_error(Errno::ECONNREFUSED)
end
end
describe "finished" do
it "should raise an exception" do
expect { ab_finished("link_color") }.to raise_error(Errno::ECONNREFUSED)
end
end
describe "disable split testing" do
before(:each) do
Split.configure do |config|
config.enabled = false
end
end
it "should not attempt to connect to redis" do
expect { ab_test("link_color", "blue", "red") }.not_to raise_error
end
it "should return control variable" do
expect(ab_test("link_color", "blue", "red")).to eq("blue")
expect { ab_finished("link_color") }.not_to raise_error
end
end
end
context "and db_failover config option is turned on" do
before(:each) do
Split.configure do |config|
config.db_failover = true
end
end
describe "ab_test" do
it "should not raise an exception" do
expect { ab_test("link_color", "blue", "red") }.not_to raise_error
end
it "should call db_failover_on_db_error proc with error as parameter" do
Split.configure do |config|
config.db_failover_on_db_error = proc do |error|
expect(error).to be_a(Errno::ECONNREFUSED)
end
end
expect(Split.configuration.db_failover_on_db_error).to receive(:call).and_call_original
ab_test("link_color", "blue", "red")
end
it "should always use first alternative" do
expect(ab_test("link_color", "blue", "red")).to eq("blue")
expect(ab_test("link_color", { "blue" => 0.01 }, "red" => 0.2)).to eq("blue")
expect(ab_test("link_color", { "blue" => 0.8 }, { "red" => 20 })).to eq("blue")
expect(ab_test("link_color", "blue", "red") do |alternative|
"shared/#{alternative}"
end).to eq("shared/blue")
end
context "and db_failover_allow_parameter_override config option is turned on" do
before(:each) do
Split.configure do |config|
config.db_failover_allow_parameter_override = true
end
end
context "and given an override parameter" do
it "should use given override instead of the first alternative" do
@params = { "ab_test" => { "link_color" => "red" } }
expect(ab_test("link_color", "blue", "red")).to eq("red")
expect(ab_test("link_color", "blue", "red", "green")).to eq("red")
expect(ab_test("link_color", { "blue" => 0.01 }, "red" => 0.2)).to eq("red")
expect(ab_test("link_color", { "blue" => 0.8 }, { "red" => 20 })).to eq("red")
expect(ab_test("link_color", "blue", "red") do |alternative|
"shared/#{alternative}"
end).to eq("shared/red")
end
end
end
context "and preloaded config given" do
before do
Split.configuration.experiments[:link_color] = {
alternatives: [ "blue", "red" ],
}
end
it "uses first alternative" do
expect(ab_test(:link_color)).to eq("blue")
end
end
end
describe "finished" do
it "should not raise an exception" do
expect { ab_finished("link_color") }.not_to raise_error
end
it "should call db_failover_on_db_error proc with error as parameter" do
Split.configure do |config|
config.db_failover_on_db_error = proc do |error|
expect(error).to be_a(Errno::ECONNREFUSED)
end
end
expect(Split.configuration.db_failover_on_db_error).to receive(:call).and_call_original
ab_finished("link_color")
end
end
end
end
context "with preloaded config" do
before { Split.configuration.experiments = {} }
it "pulls options from config file" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ],
goals: ["goal1", "goal2"]
}
ab_test :my_experiment
expect(Split::Experiment.new(:my_experiment).alternatives.map(&:name)).to eq([ "control_opt", "other_opt" ])
expect(Split::Experiment.new(:my_experiment).goals).to eq([ "goal1", "goal2" ])
end
it "can be called multiple times" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ],
goals: ["goal1", "goal2"]
}
5.times { ab_test :my_experiment }
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.alternatives.map(&:name)).to eq([ "control_opt", "other_opt" ])
expect(experiment.goals).to eq([ "goal1", "goal2" ])
expect(experiment.participant_count).to eq(1)
end
it "accepts multiple goals" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ],
goals: [ "goal1", "goal2", "goal3" ]
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.goals).to eq([ "goal1", "goal2", "goal3" ])
end
it "allow specifying goals to be optional" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ]
}
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.goals).to eq([])
end
it "accepts multiple alternatives" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "second_opt", "third_opt" ],
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.alternatives.map(&:name)).to eq([ "control_opt", "second_opt", "third_opt" ])
end
it "accepts probability on alternatives" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
],
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.alternatives.collect { |a| [a.name, a.weight] }).to eq([["control_opt", 0.67], ["second_opt", 0.1], ["third_opt", 0.23]])
end
it "accepts probability on some alternatives" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [
{ name: "control_opt", percent: 34 },
"second_opt",
{ name: "third_opt", percent: 23 },
"fourth_opt",
],
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
names_and_weights = experiment.alternatives.collect { |a| [a.name, a.weight] }
expect(names_and_weights).to eq([["control_opt", 0.34], ["second_opt", 0.215], ["third_opt", 0.23], ["fourth_opt", 0.215]])
expect(names_and_weights.inject(0) { |sum, nw| sum + nw[1] }).to eq(1.0)
end
it "allows name param without probability" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [
{ name: "control_opt" },
"second_opt",
{ name: "third_opt", percent: 64 },
],
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
names_and_weights = experiment.alternatives.collect { |a| [a.name, a.weight] }
expect(names_and_weights).to eq([["control_opt", 0.18], ["second_opt", 0.18], ["third_opt", 0.64]])
expect(names_and_weights.inject(0) { |sum, nw| sum + nw[1] }).to eq(1.0)
end
it "fails gracefully if config is missing experiment" do
Split.configuration.experiments = { other_experiment: { foo: "Bar" } }
expect { ab_test :my_experiment }.to raise_error(Split::ExperimentNotFound)
end
it "fails gracefully if config is missing" do
expect { Split.configuration.experiments = nil }.to raise_error(Split::InvalidExperimentsFormatError)
end
it "fails gracefully if config is missing alternatives" do
Split.configuration.experiments[:my_experiment] = { foo: "Bar" }
expect { ab_test :my_experiment }.to raise_error(NoMethodError)
end
end
it "should handle multiple experiments correctly" do
experiment2 = Split::ExperimentCatalog.find_or_create("link_color2", "blue", "red")
ab_test("link_color", "blue", "red")
ab_test("link_color2", "blue", "red")
ab_finished("link_color2")
experiment2.alternatives.each do |alt|
expect(alt.unfinished_count).to eq(0)
end
end
context "with goals" do
before do
@experiment = { "link_color" => ["purchase", "refund"] }
@alternatives = ["blue", "red"]
@experiment_name, @goals = normalize_metric(@experiment)
@goal1 = @goals[0]
@goal2 = @goals[1]
end
it "should normalize experiment" do
expect(@experiment_name).to eq("link_color")
expect(@goals).to eq(["purchase", "refund"])
end
describe "ab_test" do
it "should allow experiment goals interface as a single hash" do
ab_test(@experiment, *@alternatives)
experiment = Split::ExperimentCatalog.find("link_color")
expect(experiment.goals).to eq(["purchase", "refund"])
end
end
describe "ab_finished" do
before do
@alternative_name = ab_test(@experiment, *@alternatives)
end
it "should increment the counter for the specified-goal completed alternative" do
expect { ab_finished({ "link_color" => ["purchase"] }) }
.to change { Split::Alternative.new(@alternative_name, @experiment_name).completed_count(@goal2) }.by(0)
.and change { Split::Alternative.new(@alternative_name, @experiment_name).completed_count(@goal1) }.by(1)
end
end
end
end
<MSG> Merge pull request #173 from wimdu/storing_overrided_test_group
Adding possibility to store overridden alternative
<DFF> @@ -96,6 +96,22 @@ describe Split::Helper do
alternative.should eql('red')
end
+ it "should not store the via params forced alternative" do
+ @params = {'link_color' => 'blue'}
+ ab_user.should_not_receive(:[]=)
+ ab_test('link_color', 'blue', 'red')
+ end
+
+ context "when store_override is set" do
+ before { Split.configuration.store_override = true }
+
+ it "should store the forced alternative" do
+ @params = {'link_color' => 'blue'}
+ ab_user.should_receive(:[]=).with('link_color', 'blue')
+ ab_test('link_color', 'blue', 'red')
+ end
+ end
+
it "should allow passing a block" do
alt = ab_test('link_color', 'blue', 'red')
ret = ab_test('link_color', 'blue', 'red') { |alternative| "shared/#{alternative}" }
| 16 | Merge pull request #173 from wimdu/storing_overrided_test_group | 0 | .rb | rb | mit | splitrb/split |
10070903 | <NME> helper_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
# TODO change some of these tests to use Rack::Test
describe Split::Helper do
include Split::Helper
let(:experiment) {
Split::ExperimentCatalog.find_or_create("link_color", "blue", "red")
}
describe "ab_test" do
it "should not raise an error when passed strings for alternatives" do
expect { ab_test("xyz", "1", "2", "3") }.not_to raise_error
end
it "should not raise an error when passed an array for alternatives" do
expect { ab_test("xyz", ["1", "2", "3"]) }.not_to raise_error
end
it "should raise the appropriate error when passed integers for alternatives" do
expect { ab_test("xyz", 1, 2, 3) }.to raise_error(ArgumentError)
end
it "should raise the appropriate error when passed symbols for alternatives" do
expect { ab_test("xyz", :a, :b, :c) }.to raise_error(ArgumentError)
end
it "should not raise error when passed an array for goals" do
expect { ab_test({ "link_color" => ["purchase", "refund"] }, "blue", "red") }.not_to raise_error
end
it "should not raise error when passed just one goal" do
expect { ab_test({ "link_color" => "purchase" }, "blue", "red") }.not_to raise_error
end
it "raises an appropriate error when processing combined expirements" do
Split.configuration.experiments = {
combined_exp_1: {
alternatives: [ { name: "control", percent: 50 }, { name: "test-alt", percent: 50 } ],
metric: :my_metric,
combined_experiments: [:combined_exp_1_sub_1]
}
}
Split::ExperimentCatalog.find_or_create("combined_exp_1")
expect { ab_test("combined_exp_1") }.to raise_error(Split::InvalidExperimentsFormatError)
end
it "should assign a random alternative to a new user when there are an equal number of alternatives assigned" do
ab_test("link_color", "blue", "red")
expect(["red", "blue"]).to include(ab_user["link_color"])
end
it "should increment the participation counter after assignment to a new user" do
previous_red_count = Split::Alternative.new("red", "link_color").participant_count
previous_blue_count = Split::Alternative.new("blue", "link_color").participant_count
ab_test("link_color", "blue", "red")
new_red_count = Split::Alternative.new("red", "link_color").participant_count
new_blue_count = Split::Alternative.new("blue", "link_color").participant_count
expect((new_red_count + new_blue_count)).to eq(previous_red_count + previous_blue_count + 1)
end
it "should not increment the counter for an experiment that the user is not participating in" do
ab_test("link_color", "blue", "red")
e = Split::ExperimentCatalog.find_or_create("button_size", "small", "big")
expect {
# User shouldn't participate in this second experiment
ab_test("button_size", "small", "big")
}.not_to change { e.participant_count }
end
it "should not increment the counter for an ended experiment" do
e = Split::ExperimentCatalog.find_or_create("button_size", "small", "big")
e.winner = "small"
expect {
a = ab_test("button_size", "small", "big")
expect(a).to eq("small")
}.not_to change { e.participant_count }
end
it "should not increment the counter for an not started experiment" do
expect(Split.configuration).to receive(:start_manually).and_return(true)
e = Split::ExperimentCatalog.find_or_create("button_size", "small", "big")
expect {
a = ab_test("button_size", "small", "big")
expect(a).to eq("small")
}.not_to change { e.participant_count }
end
it "should return the given alternative for an existing user" do
alternative.should eql('red')
end
it "should allow passing a block" do
alt = ab_test('link_color', 'blue', 'red')
ret = ab_test('link_color', 'blue', 'red') { |alternative| "shared/#{alternative}" }
expect(alternative).to eq("red")
alternative = ab_test("link_color", { "blue" => 5 }, "red" => 1)
expect(alternative).to eq("red")
end
it "should not allow an arbitrary alternative" do
@params = { "ab_test" => { "link_color" => "pink" } }
alternative = ab_test("link_color", "blue")
expect(alternative).to eq("blue")
end
it "should not store the split when a param forced alternative" do
@params = { "ab_test" => { "link_color" => "blue" } }
expect(ab_user).not_to receive(:[]=)
ab_test("link_color", "blue", "red")
end
it "SPLIT_DISABLE query parameter should also force the alternative (uses control)" do
@params = { "SPLIT_DISABLE" => "true" }
alternative = ab_test("link_color", "blue", "red")
expect(alternative).to eq("blue")
alternative = ab_test("link_color", { "blue" => 1 }, "red" => 5)
expect(alternative).to eq("blue")
alternative = ab_test("link_color", "red", "blue")
expect(alternative).to eq("red")
alternative = ab_test("link_color", { "red" => 5 }, "blue" => 1)
expect(alternative).to eq("red")
end
it "should not store the split when Split generically disabled" do
@params = { "SPLIT_DISABLE" => "true" }
expect(ab_user).not_to receive(:[]=)
ab_test("link_color", "blue", "red")
end
context "when store_override is set" do
before { Split.configuration.store_override = true }
it "should store the forced alternative" do
@params = { "ab_test" => { "link_color" => "blue" } }
expect(ab_user).to receive(:[]=).with("link_color", "blue")
ab_test("link_color", "blue", "red")
end
end
context "when on_trial_choose is set" do
before { Split.configuration.on_trial_choose = :some_method }
it "should call the method" do
expect(self).to receive(:some_method)
ab_test("link_color", "blue", "red")
end
end
it "should allow passing a block" do
alt = ab_test("link_color", "blue", "red")
ret = ab_test("link_color", "blue", "red") { |alternative| "shared/#{alternative}" }
expect(ret).to eq("shared/#{alt}")
end
it "should allow the share of visitors see an alternative to be specified" do
ab_test("link_color", { "blue" => 0.8 }, { "red" => 20 })
expect(["red", "blue"]).to include(ab_user["link_color"])
end
it "should allow alternative weighting interface as a single hash" do
ab_test("link_color", { "blue" => 0.01 }, "red" => 0.2)
experiment = Split::ExperimentCatalog.find("link_color")
expect(experiment.alternatives.map(&:name)).to eq(["blue", "red"])
expect(experiment.alternatives.collect { |a| a.weight }).to match_array([0.01, 0.2])
end
it "should only let a user participate in one experiment at a time" do
link_color = ab_test("link_color", "blue", "red")
ab_test("button_size", "small", "big")
expect(ab_user["link_color"]).to eq(link_color)
big = Split::Alternative.new("big", "button_size")
expect(big.participant_count).to eq(0)
small = Split::Alternative.new("small", "button_size")
expect(small.participant_count).to eq(0)
end
it "should let a user participate in many experiment with allow_multiple_experiments option" do
Split.configure do |config|
config.allow_multiple_experiments = true
end
link_color = ab_test("link_color", "blue", "red")
button_size = ab_test("button_size", "small", "big")
expect(ab_user["link_color"]).to eq(link_color)
expect(ab_user["button_size"]).to eq(button_size)
button_size_alt = Split::Alternative.new(button_size, "button_size")
expect(button_size_alt.participant_count).to eq(1)
end
context "with allow_multiple_experiments = 'control'" do
it "should let a user participate in many experiment with one non-'control' alternative" do
Split.configure do |config|
config.allow_multiple_experiments = "control"
end
groups = 100.times.map do |n|
ab_test("test#{n}".to_sym, { "control" => (100 - n) }, { "test#{n}-alt" => n })
end
experiments = ab_user.active_experiments
expect(experiments.size).to be > 1
count_control = experiments.values.count { |g| g == "control" }
expect(count_control).to eq(experiments.size - 1)
count_alts = groups.count { |g| g != "control" }
expect(count_alts).to eq(1)
end
context "when user already has experiment" do
let(:mock_user) { Split::User.new(self, { "test_0" => "test-alt" }) }
before do
Split.configure do |config|
config.allow_multiple_experiments = "control"
end
Split::ExperimentCatalog.find_or_initialize("test_0", "control", "test-alt").save
Split::ExperimentCatalog.find_or_initialize("test_1", "control", "test-alt").save
end
it "should restore previously selected alternative" do
expect(ab_user.active_experiments.size).to eq 1
expect(ab_test(:test_0, { "control" => 100 }, { "test-alt" => 1 })).to eq "test-alt"
expect(ab_test(:test_0, { "control" => 1 }, { "test-alt" => 100 })).to eq "test-alt"
end
it "should select the correct alternatives after experiment resets" do
experiment = Split::ExperimentCatalog.find(:test_0)
experiment.reset
mock_user[experiment.key] = "test-alt"
expect(ab_user.active_experiments.size).to eq 1
expect(ab_test(:test_0, { "control" => 100 }, { "test-alt" => 1 })).to eq "test-alt"
expect(ab_test(:test_0, { "control" => 0 }, { "test-alt" => 100 })).to eq "test-alt"
end
it "lets override existing choice" do
pending "this requires user store reset on first call not depending on whelther it is current trial"
@params = { "ab_test" => { "test_1" => "test-alt" } }
expect(ab_test(:test_0, { "control" => 0 }, { "test-alt" => 100 })).to eq "control"
expect(ab_test(:test_1, { "control" => 100 }, { "test-alt" => 1 })).to eq "test-alt"
end
end
end
it "should not over-write a finished key when an experiment is on a later version" do
experiment.increment_version
ab_user = { experiment.key => "blue", experiment.finished_key => true }
finished_session = ab_user.dup
ab_test("link_color", "blue", "red")
expect(ab_user).to eq(finished_session)
end
end
describe "metadata" do
context "is defined" do
before do
Split.configuration.experiments = {
my_experiment: {
alternatives: ["one", "two"],
resettable: false,
metadata: { "one" => "Meta1", "two" => "Meta2" }
}
}
end
it "should be passed to helper block" do
@params = { "ab_test" => { "my_experiment" => "two" } }
expect(ab_test("my_experiment")).to eq "two"
expect(ab_test("my_experiment") do |alternative, meta|
meta
end).to eq("Meta2")
end
it "should pass control metadata helper block if library disabled" do
Split.configure do |config|
config.enabled = false
end
expect(ab_test("my_experiment")).to eq "one"
expect(ab_test("my_experiment") do |_, meta|
meta
end).to eq("Meta1")
end
end
context "is not defined" do
before do
Split.configuration.experiments = {
my_experiment: {
alternatives: ["one", "two"],
resettable: false,
metadata: nil
}
}
end
it "should be passed to helper block" do
expect(ab_test("my_experiment") do |alternative, meta|
meta
end).to eq({})
end
it "should pass control metadata helper block if library disabled" do
Split.configure do |config|
config.enabled = false
end
expect(ab_test("my_experiment") do |_, meta|
meta
end).to eq({})
end
end
end
describe "ab_finished" do
context "for an experiment that the user participates in" do
before(:each) do
@experiment_name = "link_color"
@alternatives = ["blue", "red"]
@experiment = Split::ExperimentCatalog.find_or_create(@experiment_name, *@alternatives)
@alternative_name = ab_test(@experiment_name, *@alternatives)
@previous_completion_count = Split::Alternative.new(@alternative_name, @experiment_name).completed_count
end
it "should increment the counter for the completed alternative" do
ab_finished(@experiment_name)
new_completion_count = Split::Alternative.new(@alternative_name, @experiment_name).completed_count
expect(new_completion_count).to eq(@previous_completion_count + 1)
end
it "should set experiment's finished key if reset is false" do
ab_finished(@experiment_name, { reset: false })
expect(ab_user[@experiment.key]).to eq(@alternative_name)
expect(ab_user[@experiment.finished_key]).to eq(true)
end
it "should not increment the counter if reset is false and the experiment has been already finished" do
2.times { ab_finished(@experiment_name, { reset: false }) }
new_completion_count = Split::Alternative.new(@alternative_name, @experiment_name).completed_count
expect(new_completion_count).to eq(@previous_completion_count + 1)
end
it "should not increment the counter for an ended experiment" do
e = Split::ExperimentCatalog.find_or_create("button_size", "small", "big")
e.winner = "small"
a = ab_test("button_size", "small", "big")
expect(a).to eq("small")
expect {
ab_finished("button_size")
}.not_to change { Split::Alternative.new(a, "button_size").completed_count }
end
it "should clear out the user's participation from their session" do
expect(ab_user[@experiment.key]).to eq(@alternative_name)
ab_finished(@experiment_name)
expect(ab_user.keys).to be_empty
end
it "should not clear out the users session if reset is false" do
expect(ab_user[@experiment.key]).to eq(@alternative_name)
ab_finished(@experiment_name, { reset: false })
expect(ab_user[@experiment.key]).to eq(@alternative_name)
expect(ab_user[@experiment.finished_key]).to eq(true)
end
it "should reset the users session when experiment is not versioned" do
expect(ab_user[@experiment.key]).to eq(@alternative_name)
ab_finished(@experiment_name)
expect(ab_user.keys).to be_empty
end
it "should reset the users session when experiment is versioned" do
@experiment.increment_version
@alternative_name = ab_test(@experiment_name, *@alternatives)
expect(ab_user[@experiment.key]).to eq(@alternative_name)
ab_finished(@experiment_name)
expect(ab_user.keys).to be_empty
end
context "when on_trial_complete is set" do
before { Split.configuration.on_trial_complete = :some_method }
it "should call the method" do
expect(self).to receive(:some_method)
ab_finished(@experiment_name)
end
it "should not call the method without alternative" do
ab_user[@experiment.key] = nil
expect(self).not_to receive(:some_method)
ab_finished(@experiment_name)
end
end
end
context "for an experiment that the user is excluded from" do
before do
alternative = ab_test("link_color", "blue", "red")
expect(Split::Alternative.new(alternative, "link_color").participant_count).to eq(1)
alternative = ab_test("button_size", "small", "big")
expect(Split::Alternative.new(alternative, "button_size").participant_count).to eq(0)
end
it "should not increment the completed counter" do
# So, user should be participating in the link_color experiment and
# receive the control for button_size. As the user is not participating in
# the button size experiment, finishing it should not increase the
# completion count for that alternative.
expect {
ab_finished("button_size")
}.not_to change { Split::Alternative.new("small", "button_size").completed_count }
end
end
context "for an experiment that the user does not participate in" do
before do
Split::ExperimentCatalog.find_or_create(:not_started_experiment, "control", "alt")
end
it "should not raise an exception" do
expect { ab_finished(:not_started_experiment) }.not_to raise_exception
end
it "should not change the user state when reset is false" do
expect { ab_finished(:not_started_experiment, reset: false) }.not_to change { ab_user.keys }.from([])
end
it "should not change the user state when reset is true" do
expect(self).not_to receive(:reset!)
ab_finished(:not_started_experiment)
end
it "should not increment the completed counter" do
ab_finished(:not_started_experiment)
expect(Split::Alternative.new("control", :not_started_experiment).completed_count).to eq(0)
expect(Split::Alternative.new("alt", :not_started_experiment).completed_count).to eq(0)
end
end
end
context "finished with config" do
it "passes reset option" do
Split.configuration.experiments = {
my_experiment: {
alternatives: ["one", "two"],
resettable: false,
}
}
alternative = ab_test(:my_experiment)
experiment = Split::ExperimentCatalog.find :my_experiment
ab_finished :my_experiment
expect(ab_user[experiment.key]).to eq(alternative)
expect(ab_user[experiment.finished_key]).to eq(true)
end
end
context "finished with metric name" do
before { Split.configuration.experiments = {} }
before { expect(Split::Alternative).to receive(:new).at_least(1).times.and_call_original }
def should_finish_experiment(experiment_name, should_finish = true)
alts = Split.configuration.experiments[experiment_name][:alternatives]
experiment = Split::ExperimentCatalog.find_or_create(experiment_name, *alts)
alt_name = ab_user[experiment.key] = alts.first
alt = double("alternative")
expect(alt).to receive(:name).at_most(1).times.and_return(alt_name)
expect(Split::Alternative).to receive(:new).at_most(1).times.with(alt_name, experiment_name.to_s).and_return(alt)
if should_finish
expect(alt).to receive(:increment_completion).at_most(1).times
else
expect(alt).not_to receive(:increment_completion)
end
end
it "completes the test" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ],
metric: :my_metric
}
should_finish_experiment :my_experiment
ab_finished :my_metric
end
it "completes all relevant tests" do
Split.configuration.experiments = {
exp_1: {
alternatives: [ "1-1", "1-2" ],
metric: :my_metric
},
exp_2: {
alternatives: [ "2-1", "2-2" ],
metric: :another_metric
},
exp_3: {
alternatives: [ "3-1", "3-2" ],
metric: :my_metric
},
}
should_finish_experiment :exp_1
should_finish_experiment :exp_2, false
should_finish_experiment :exp_3
ab_finished :my_metric
end
it "passes reset option" do
Split.configuration.experiments = {
my_exp: {
alternatives: ["one", "two"],
metric: :my_metric,
resettable: false,
}
}
alternative_name = ab_test(:my_exp)
exp = Split::ExperimentCatalog.find :my_exp
ab_finished :my_metric
expect(ab_user[exp.key]).to eq(alternative_name)
expect(ab_user[exp.finished_key]).to be_truthy
end
it "passes through options" do
Split.configuration.experiments = {
my_exp: {
alternatives: ["one", "two"],
metric: :my_metric,
}
}
alternative_name = ab_test(:my_exp)
exp = Split::ExperimentCatalog.find :my_exp
ab_finished :my_metric, reset: false
expect(ab_user[exp.key]).to eq(alternative_name)
expect(ab_user[exp.finished_key]).to be_truthy
end
end
describe "conversions" do
it "should return a conversion rate for an alternative" do
alternative_name = ab_test("link_color", "blue", "red")
previous_convertion_rate = Split::Alternative.new(alternative_name, "link_color").conversion_rate
expect(previous_convertion_rate).to eq(0.0)
ab_finished("link_color")
new_convertion_rate = Split::Alternative.new(alternative_name, "link_color").conversion_rate
expect(new_convertion_rate).to eq(1.0)
end
end
describe "active experiments" do
it "should show an active test" do
alternative = ab_test("def", "4", "5", "6")
expect(active_experiments.count).to eq 1
expect(active_experiments.first[0]).to eq "def"
expect(active_experiments.first[1]).to eq alternative
end
it "should show a finished test" do
alternative = ab_test("def", "4", "5", "6")
ab_finished("def", { reset: false })
expect(active_experiments.count).to eq 1
expect(active_experiments.first[0]).to eq "def"
expect(active_experiments.first[1]).to eq alternative
end
it "should show an active test when an experiment is on a later version" do
experiment.reset
expect(experiment.version).to eq(1)
ab_test("link_color", "blue", "red")
expect(active_experiments.count).to eq 1
expect(active_experiments.first[0]).to eq "link_color"
end
it "should show versioned tests properly" do
10.times { experiment.reset }
alternative = ab_test(experiment.name, "blue", "red")
ab_finished(experiment.name, reset: false)
expect(experiment.version).to eq(10)
expect(active_experiments.count).to eq 1
expect(active_experiments).to eq({ "link_color" => alternative })
end
it "should show multiple tests" do
Split.configure do |config|
config.allow_multiple_experiments = true
end
alternative = ab_test("def", "4", "5", "6")
another_alternative = ab_test("ghi", "7", "8", "9")
expect(active_experiments.count).to eq 2
expect(active_experiments["def"]).to eq alternative
expect(active_experiments["ghi"]).to eq another_alternative
end
it "should not show tests with winners" do
Split.configure do |config|
config.allow_multiple_experiments = true
end
e = Split::ExperimentCatalog.find_or_create("def", "4", "5", "6")
e.winner = "4"
ab_test("def", "4", "5", "6")
another_alternative = ab_test("ghi", "7", "8", "9")
expect(active_experiments.count).to eq 1
expect(active_experiments.first[0]).to eq "ghi"
expect(active_experiments.first[1]).to eq another_alternative
end
end
describe "when user is a robot" do
before(:each) do
@request = OpenStruct.new(user_agent: "Googlebot/2.1 (+http://www.google.com/bot.html)")
end
describe "ab_test" do
it "should return the control" do
alternative = ab_test("link_color", "blue", "red")
expect(alternative).to eq experiment.control.name
end
it "should not create a experiment" do
ab_test("link_color", "blue", "red")
expect(Split::Experiment.new("link_color")).to be_a_new_record
end
it "should not increment the participation count" do
previous_red_count = Split::Alternative.new("red", "link_color").participant_count
previous_blue_count = Split::Alternative.new("blue", "link_color").participant_count
ab_test("link_color", "blue", "red")
new_red_count = Split::Alternative.new("red", "link_color").participant_count
new_blue_count = Split::Alternative.new("blue", "link_color").participant_count
expect((new_red_count + new_blue_count)).to eq(previous_red_count + previous_blue_count)
end
end
describe "finished" do
it "should not increment the completed count" do
alternative_name = ab_test("link_color", "blue", "red")
previous_completion_count = Split::Alternative.new(alternative_name, "link_color").completed_count
ab_finished("link_color")
new_completion_count = Split::Alternative.new(alternative_name, "link_color").completed_count
expect(new_completion_count).to eq(previous_completion_count)
end
end
end
describe "when providing custom ignore logic" do
context "using a proc to configure custom logic" do
before(:each) do
Split.configure do |c|
c.ignore_filter = proc { |request| true } # ignore everything
end
end
it "ignores the ab_test" do
ab_test("link_color", "blue", "red")
red_count = Split::Alternative.new("red", "link_color").participant_count
blue_count = Split::Alternative.new("blue", "link_color").participant_count
expect((red_count + blue_count)).to be(0)
end
end
end
shared_examples_for "a disabled test" do
describe "ab_test" do
it "should return the control" do
alternative = ab_test("link_color", "blue", "red")
expect(alternative).to eq experiment.control.name
end
it "should not increment the participation count" do
previous_red_count = Split::Alternative.new("red", "link_color").participant_count
previous_blue_count = Split::Alternative.new("blue", "link_color").participant_count
ab_test("link_color", "blue", "red")
new_red_count = Split::Alternative.new("red", "link_color").participant_count
new_blue_count = Split::Alternative.new("blue", "link_color").participant_count
expect((new_red_count + new_blue_count)).to eq(previous_red_count + previous_blue_count)
end
end
describe "finished" do
it "should not increment the completed count" do
alternative_name = ab_test("link_color", "blue", "red")
previous_completion_count = Split::Alternative.new(alternative_name, "link_color").completed_count
ab_finished("link_color")
new_completion_count = Split::Alternative.new(alternative_name, "link_color").completed_count
expect(new_completion_count).to eq(previous_completion_count)
end
end
end
describe "when ip address is ignored" do
context "individually" do
before(:each) do
@request = OpenStruct.new(ip: "81.19.48.130")
Split.configure do |c|
c.ignore_ip_addresses << "81.19.48.130"
end
end
it_behaves_like "a disabled test"
end
context "for a range" do
before(:each) do
@request = OpenStruct.new(ip: "81.19.48.129")
Split.configure do |c|
c.ignore_ip_addresses << /81\.19\.48\.[0-9]+/
end
end
it_behaves_like "a disabled test"
end
context "using both a range and a specific value" do
before(:each) do
@request = OpenStruct.new(ip: "81.19.48.128")
Split.configure do |c|
c.ignore_ip_addresses << "81.19.48.130"
c.ignore_ip_addresses << /81\.19\.48\.[0-9]+/
end
end
it_behaves_like "a disabled test"
end
context "when ignored other address" do
before do
@request = OpenStruct.new(ip: "1.1.1.1")
Split.configure do |c|
c.ignore_ip_addresses << "81.19.48.130"
end
end
it "works as usual" do
alternative_name = ab_test("link_color", "red", "blue")
expect {
ab_finished("link_color")
}.to change(Split::Alternative.new(alternative_name, "link_color"), :completed_count).by(1)
end
end
end
describe "when user is previewing" do
before(:each) do
@request = OpenStruct.new(headers: { "x-purpose" => "preview" })
end
it_behaves_like "a disabled test"
end
describe "versioned experiments" do
it "should use version zero if no version is present" do
alternative_name = ab_test("link_color", "blue", "red")
expect(experiment.version).to eq(0)
expect(ab_user["link_color"]).to eq(alternative_name)
end
it "should save the version of the experiment to the session" do
experiment.reset
expect(experiment.version).to eq(1)
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color:1"]).to eq(alternative_name)
end
it "should load the experiment even if the version is not 0" do
experiment.reset
expect(experiment.version).to eq(1)
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color:1"]).to eq(alternative_name)
return_alternative_name = ab_test("link_color", "blue", "red")
expect(return_alternative_name).to eq(alternative_name)
end
it "should reset the session of a user on an older version of the experiment" do
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color"]).to eq(alternative_name)
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.participant_count).to eq(1)
experiment.reset
expect(experiment.version).to eq(1)
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.participant_count).to eq(0)
new_alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color:1"]).to eq(new_alternative_name)
new_alternative = Split::Alternative.new(new_alternative_name, "link_color")
expect(new_alternative.participant_count).to eq(1)
end
it "should cleanup old versions of experiments from the session" do
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color"]).to eq(alternative_name)
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.participant_count).to eq(1)
experiment.reset
expect(experiment.version).to eq(1)
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.participant_count).to eq(0)
new_alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color:1"]).to eq(new_alternative_name)
end
it "should only count completion of users on the current version" do
alternative_name = ab_test("link_color", "blue", "red")
expect(ab_user["link_color"]).to eq(alternative_name)
Split::Alternative.new(alternative_name, "link_color")
experiment.reset
expect(experiment.version).to eq(1)
ab_finished("link_color")
alternative = Split::Alternative.new(alternative_name, "link_color")
expect(alternative.completed_count).to eq(0)
end
end
context "when redis is not available" do
before(:each) do
expect(Split).to receive(:redis).at_most(5).times.and_raise(Errno::ECONNREFUSED.new)
end
context "and db_failover config option is turned off" do
before(:each) do
Split.configure do |config|
config.db_failover = false
end
end
describe "ab_test" do
it "should raise an exception" do
expect { ab_test("link_color", "blue", "red") }.to raise_error(Errno::ECONNREFUSED)
end
end
describe "finished" do
it "should raise an exception" do
expect { ab_finished("link_color") }.to raise_error(Errno::ECONNREFUSED)
end
end
describe "disable split testing" do
before(:each) do
Split.configure do |config|
config.enabled = false
end
end
it "should not attempt to connect to redis" do
expect { ab_test("link_color", "blue", "red") }.not_to raise_error
end
it "should return control variable" do
expect(ab_test("link_color", "blue", "red")).to eq("blue")
expect { ab_finished("link_color") }.not_to raise_error
end
end
end
context "and db_failover config option is turned on" do
before(:each) do
Split.configure do |config|
config.db_failover = true
end
end
describe "ab_test" do
it "should not raise an exception" do
expect { ab_test("link_color", "blue", "red") }.not_to raise_error
end
it "should call db_failover_on_db_error proc with error as parameter" do
Split.configure do |config|
config.db_failover_on_db_error = proc do |error|
expect(error).to be_a(Errno::ECONNREFUSED)
end
end
expect(Split.configuration.db_failover_on_db_error).to receive(:call).and_call_original
ab_test("link_color", "blue", "red")
end
it "should always use first alternative" do
expect(ab_test("link_color", "blue", "red")).to eq("blue")
expect(ab_test("link_color", { "blue" => 0.01 }, "red" => 0.2)).to eq("blue")
expect(ab_test("link_color", { "blue" => 0.8 }, { "red" => 20 })).to eq("blue")
expect(ab_test("link_color", "blue", "red") do |alternative|
"shared/#{alternative}"
end).to eq("shared/blue")
end
context "and db_failover_allow_parameter_override config option is turned on" do
before(:each) do
Split.configure do |config|
config.db_failover_allow_parameter_override = true
end
end
context "and given an override parameter" do
it "should use given override instead of the first alternative" do
@params = { "ab_test" => { "link_color" => "red" } }
expect(ab_test("link_color", "blue", "red")).to eq("red")
expect(ab_test("link_color", "blue", "red", "green")).to eq("red")
expect(ab_test("link_color", { "blue" => 0.01 }, "red" => 0.2)).to eq("red")
expect(ab_test("link_color", { "blue" => 0.8 }, { "red" => 20 })).to eq("red")
expect(ab_test("link_color", "blue", "red") do |alternative|
"shared/#{alternative}"
end).to eq("shared/red")
end
end
end
context "and preloaded config given" do
before do
Split.configuration.experiments[:link_color] = {
alternatives: [ "blue", "red" ],
}
end
it "uses first alternative" do
expect(ab_test(:link_color)).to eq("blue")
end
end
end
describe "finished" do
it "should not raise an exception" do
expect { ab_finished("link_color") }.not_to raise_error
end
it "should call db_failover_on_db_error proc with error as parameter" do
Split.configure do |config|
config.db_failover_on_db_error = proc do |error|
expect(error).to be_a(Errno::ECONNREFUSED)
end
end
expect(Split.configuration.db_failover_on_db_error).to receive(:call).and_call_original
ab_finished("link_color")
end
end
end
end
context "with preloaded config" do
before { Split.configuration.experiments = {} }
it "pulls options from config file" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ],
goals: ["goal1", "goal2"]
}
ab_test :my_experiment
expect(Split::Experiment.new(:my_experiment).alternatives.map(&:name)).to eq([ "control_opt", "other_opt" ])
expect(Split::Experiment.new(:my_experiment).goals).to eq([ "goal1", "goal2" ])
end
it "can be called multiple times" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ],
goals: ["goal1", "goal2"]
}
5.times { ab_test :my_experiment }
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.alternatives.map(&:name)).to eq([ "control_opt", "other_opt" ])
expect(experiment.goals).to eq([ "goal1", "goal2" ])
expect(experiment.participant_count).to eq(1)
end
it "accepts multiple goals" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ],
goals: [ "goal1", "goal2", "goal3" ]
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.goals).to eq([ "goal1", "goal2", "goal3" ])
end
it "allow specifying goals to be optional" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "other_opt" ]
}
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.goals).to eq([])
end
it "accepts multiple alternatives" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [ "control_opt", "second_opt", "third_opt" ],
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.alternatives.map(&:name)).to eq([ "control_opt", "second_opt", "third_opt" ])
end
it "accepts probability on alternatives" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
],
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
expect(experiment.alternatives.collect { |a| [a.name, a.weight] }).to eq([["control_opt", 0.67], ["second_opt", 0.1], ["third_opt", 0.23]])
end
it "accepts probability on some alternatives" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [
{ name: "control_opt", percent: 34 },
"second_opt",
{ name: "third_opt", percent: 23 },
"fourth_opt",
],
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
names_and_weights = experiment.alternatives.collect { |a| [a.name, a.weight] }
expect(names_and_weights).to eq([["control_opt", 0.34], ["second_opt", 0.215], ["third_opt", 0.23], ["fourth_opt", 0.215]])
expect(names_and_weights.inject(0) { |sum, nw| sum + nw[1] }).to eq(1.0)
end
it "allows name param without probability" do
Split.configuration.experiments[:my_experiment] = {
alternatives: [
{ name: "control_opt" },
"second_opt",
{ name: "third_opt", percent: 64 },
],
}
ab_test :my_experiment
experiment = Split::Experiment.new(:my_experiment)
names_and_weights = experiment.alternatives.collect { |a| [a.name, a.weight] }
expect(names_and_weights).to eq([["control_opt", 0.18], ["second_opt", 0.18], ["third_opt", 0.64]])
expect(names_and_weights.inject(0) { |sum, nw| sum + nw[1] }).to eq(1.0)
end
it "fails gracefully if config is missing experiment" do
Split.configuration.experiments = { other_experiment: { foo: "Bar" } }
expect { ab_test :my_experiment }.to raise_error(Split::ExperimentNotFound)
end
it "fails gracefully if config is missing" do
expect { Split.configuration.experiments = nil }.to raise_error(Split::InvalidExperimentsFormatError)
end
it "fails gracefully if config is missing alternatives" do
Split.configuration.experiments[:my_experiment] = { foo: "Bar" }
expect { ab_test :my_experiment }.to raise_error(NoMethodError)
end
end
it "should handle multiple experiments correctly" do
experiment2 = Split::ExperimentCatalog.find_or_create("link_color2", "blue", "red")
ab_test("link_color", "blue", "red")
ab_test("link_color2", "blue", "red")
ab_finished("link_color2")
experiment2.alternatives.each do |alt|
expect(alt.unfinished_count).to eq(0)
end
end
context "with goals" do
before do
@experiment = { "link_color" => ["purchase", "refund"] }
@alternatives = ["blue", "red"]
@experiment_name, @goals = normalize_metric(@experiment)
@goal1 = @goals[0]
@goal2 = @goals[1]
end
it "should normalize experiment" do
expect(@experiment_name).to eq("link_color")
expect(@goals).to eq(["purchase", "refund"])
end
describe "ab_test" do
it "should allow experiment goals interface as a single hash" do
ab_test(@experiment, *@alternatives)
experiment = Split::ExperimentCatalog.find("link_color")
expect(experiment.goals).to eq(["purchase", "refund"])
end
end
describe "ab_finished" do
before do
@alternative_name = ab_test(@experiment, *@alternatives)
end
it "should increment the counter for the specified-goal completed alternative" do
expect { ab_finished({ "link_color" => ["purchase"] }) }
.to change { Split::Alternative.new(@alternative_name, @experiment_name).completed_count(@goal2) }.by(0)
.and change { Split::Alternative.new(@alternative_name, @experiment_name).completed_count(@goal1) }.by(1)
end
end
end
end
<MSG> Merge pull request #173 from wimdu/storing_overrided_test_group
Adding possibility to store overridden alternative
<DFF> @@ -96,6 +96,22 @@ describe Split::Helper do
alternative.should eql('red')
end
+ it "should not store the via params forced alternative" do
+ @params = {'link_color' => 'blue'}
+ ab_user.should_not_receive(:[]=)
+ ab_test('link_color', 'blue', 'red')
+ end
+
+ context "when store_override is set" do
+ before { Split.configuration.store_override = true }
+
+ it "should store the forced alternative" do
+ @params = {'link_color' => 'blue'}
+ ab_user.should_receive(:[]=).with('link_color', 'blue')
+ ab_test('link_color', 'blue', 'red')
+ end
+ end
+
it "should allow passing a block" do
alt = ab_test('link_color', 'blue', 'red')
ret = ab_test('link_color', 'blue', 'red') { |alternative| "shared/#{alternative}" }
| 16 | Merge pull request #173 from wimdu/storing_overrided_test_group | 0 | .rb | rb | mit | splitrb/split |
10070904 | <NME> alternative_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/alternative"
describe Split::Alternative do
let(:alternative) {
Split::Alternative.new("Basket", "basket_text")
}
let(:alternative2) {
Split::Alternative.new("Cart", "basket_text")
}
let!(:experiment) {
Split::ExperimentCatalog.find_or_create({ "basket_text" => ["purchase", "refund"] }, "Basket", "Cart")
}
let(:goal1) { "purchase" }
let(:goal2) { "refund" }
it "should have goals" do
expect(alternative.goals).to eq(["purchase", "refund"])
end
it "should have and only return the name" do
expect(alternative.name).to eq("Basket")
end
describe "weights" do
it "should set the weights" do
experiment = Split::Experiment.new("basket_text", alternatives: [{ "Basket" => 0.6 }, { "Cart" => 0.4 }])
first = experiment.alternatives[0]
expect(first.name).to eq("Basket")
expect(first.weight).to eq(0.6)
second = experiment.alternatives[1]
expect(second.name).to eq("Cart")
expect(second.weight).to eq(0.4)
end
it "accepts probability on alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
]
}
}
experiment = Split::Experiment.new(:my_experiment)
first = experiment.alternatives[0]
expect(first.name).to eq("control_opt")
expect(first.weight).to eq(0.67)
second = experiment.alternatives[1]
expect(second.name).to eq("second_opt")
alternative.completed_count.should eql(0)
end
describe 'conversion rate' do
it "should be 0 if there are no conversions" do
alternative = Split::Alternative.new('Basket', 'basket_text')
alts = experiment.alternatives
[
["control_opt", 0.34],
["second_opt", 0.215],
["third_opt", 0.23],
["fourth_opt", 0.215]
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
end
#
it "allows name param without probability" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt" },
"second_opt",
{ name: "third_opt", percent: 64 },
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.18],
["second_opt", 0.18],
["third_opt", 0.64],
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
end
end
it "should have a default participation count of 0" do
expect(alternative.participant_count).to eq(0)
end
it "should have a default completed count of 0 for each goal" do
expect(alternative.completed_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
end
it "should belong to an experiment" do
expect(alternative.experiment.name).to eq(experiment.name)
end
it "should save to redis" do
alternative.save
expect(Split.redis.exists?("basket_text:Basket")).to be true
end
it "should increment participation count" do
old_participant_count = alternative.participant_count
alternative.increment_participation
expect(alternative.participant_count).to eq(old_participant_count+1)
end
it "should increment completed count for each goal" do
old_default_completed_count = alternative.completed_count
old_completed_count_for_goal1 = alternative.completed_count(goal1)
old_completed_count_for_goal2 = alternative.completed_count(goal2)
alternative.increment_completion
alternative.increment_completion(goal1)
alternative.increment_completion(goal2)
expect(alternative.completed_count).to eq(old_default_completed_count+1)
expect(alternative.completed_count(goal1)).to eq(old_completed_count_for_goal1+1)
expect(alternative.completed_count(goal2)).to eq(old_completed_count_for_goal2+1)
end
it "can be reset" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(5, goal2)
alternative.set_completed_count(6)
alternative.reset
expect(alternative.participant_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
expect(alternative.completed_count).to eq(0)
end
it "should know if it is the control of an experiment" do
expect(alternative.control?).to be_truthy
expect(alternative2.control?).to be_falsey
end
describe "unfinished_count" do
it "should be difference between participant and completed counts" do
alternative.increment_participation
expect(alternative.unfinished_count).to eq(alternative.participant_count)
end
it "should return the correct unfinished_count" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(3, goal2)
alternative.set_completed_count(2)
expect(alternative.unfinished_count).to eq(1)
end
end
describe "conversion rate" do
it "should be 0 if there are no conversions" do
expect(alternative.completed_count).to eq(0)
expect(alternative.conversion_rate).to eq(0)
end
it "calculate conversion rate" do
expect(alternative).to receive(:participant_count).exactly(6).times.and_return(10)
expect(alternative).to receive(:completed_count).and_return(4)
expect(alternative.conversion_rate).to eq(0.4)
expect(alternative).to receive(:completed_count).with(goal1).and_return(5)
expect(alternative.conversion_rate(goal1)).to eq(0.5)
expect(alternative).to receive(:completed_count).with(goal2).and_return(6)
expect(alternative.conversion_rate(goal2)).to eq(0.6)
end
end
describe "probability winner" do
before do
experiment.calc_winning_alternatives
end
it "should have a probability of being the winning alternative (p_winner)" do
expect(alternative.p_winner).not_to be_nil
end
it "should have a probability of being the winner for each goal" do
expect(alternative.p_winner(goal1)).not_to be_nil
end
it "should be possible to set the p_winner" do
alternative.set_p_winner(0.5)
expect(alternative.p_winner).to eq(0.5)
end
it "should be possible to set the p_winner for each goal" do
alternative.set_p_winner(0.5, goal1)
expect(alternative.p_winner(goal1)).to eq(0.5)
end
end
describe "z score" do
it "should return an error string when the control has 0 people" do
expect(alternative2.z_score).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal1)).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal2)).to eq("Needs 30+ participants.")
end
it "should return an error string when the data is skewed or incomplete as per the np > 5 test" do
control = experiment.control
control.participant_count = 100
control.set_completed_count(50)
alternative2.participant_count = 50
alternative2.set_completed_count(1)
expect(alternative2.z_score).to eq("Needs 5+ conversions.")
end
it "should return a float for a z_score given proper data" do
control = experiment.control
control.participant_count = 120
control.set_completed_count(20)
alternative2.participant_count = 100
alternative2.set_completed_count(25)
expect(alternative2.z_score).to be_kind_of(Float)
expect(alternative2.z_score).to_not eq(0)
end
it "should correctly calculate a z_score given proper data" do
control = experiment.control
control.participant_count = 126
control.set_completed_count(89)
alternative2.participant_count = 142
alternative2.set_completed_count(119)
expect(alternative2.z_score.round(2)).to eq(2.58)
end
it "should be N/A for the control" do
control = experiment.control
expect(control.z_score).to eq("N/A")
expect(control.z_score(goal1)).to eq("N/A")
expect(control.z_score(goal2)).to eq("N/A")
end
it "should not blow up for Conversion Rates > 1" do
control = experiment.control
control.participant_count = 3474
control.set_completed_count(4244)
alternative2.participant_count = 3434
alternative2.set_completed_count(4358)
expect { control.z_score }.not_to raise_error
expect { alternative2.z_score }.not_to raise_error
end
end
describe "extra_info" do
it "reads saved value of recorded_info in redis" do
saved_recorded_info = { "key_1" => 1, "key_2" => "2" }
Split.redis.hset "#{alternative.experiment_name}:#{alternative.name}", "recorded_info", saved_recorded_info.to_json
extra_info = alternative.extra_info
expect(extra_info).to eql(saved_recorded_info)
end
end
describe "record_extra_info" do
it "saves key" do
alternative.record_extra_info("signup", 1)
expect(alternative.extra_info["signup"]).to eql(1)
end
it "adds value to saved key's value second argument is number" do
alternative.record_extra_info("signup", 1)
alternative.record_extra_info("signup", 2)
expect(alternative.extra_info["signup"]).to eql(3)
end
it "sets saved's key value to the second argument if it's a string" do
alternative.record_extra_info("signup", "Value 1")
expect(alternative.extra_info["signup"]).to eql("Value 1")
alternative.record_extra_info("signup", "Value 2")
expect(alternative.extra_info["signup"]).to eql("Value 2")
end
end
end
<MSG> An alternative should know if it is the control
<DFF> @@ -59,6 +59,15 @@ describe Split::Alternative do
alternative.completed_count.should eql(0)
end
+ it "should know if it is the control of an experiment" do
+ experiment = Split::Experiment.new('basket_text', 'Basket', "Cart")
+ experiment.save
+ alternative = Split::Alternative.find('Basket', 'basket_text')
+ alternative.control?.should be_true
+ alternative = Split::Alternative.find('Cart', 'basket_text')
+ alternative.control?.should be_false
+ end
+
describe 'conversion rate' do
it "should be 0 if there are no conversions" do
alternative = Split::Alternative.new('Basket', 'basket_text')
| 9 | An alternative should know if it is the control | 0 | .rb | rb | mit | splitrb/split |
10070905 | <NME> alternative_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/alternative"
describe Split::Alternative do
let(:alternative) {
Split::Alternative.new("Basket", "basket_text")
}
let(:alternative2) {
Split::Alternative.new("Cart", "basket_text")
}
let!(:experiment) {
Split::ExperimentCatalog.find_or_create({ "basket_text" => ["purchase", "refund"] }, "Basket", "Cart")
}
let(:goal1) { "purchase" }
let(:goal2) { "refund" }
it "should have goals" do
expect(alternative.goals).to eq(["purchase", "refund"])
end
it "should have and only return the name" do
expect(alternative.name).to eq("Basket")
end
describe "weights" do
it "should set the weights" do
experiment = Split::Experiment.new("basket_text", alternatives: [{ "Basket" => 0.6 }, { "Cart" => 0.4 }])
first = experiment.alternatives[0]
expect(first.name).to eq("Basket")
expect(first.weight).to eq(0.6)
second = experiment.alternatives[1]
expect(second.name).to eq("Cart")
expect(second.weight).to eq(0.4)
end
it "accepts probability on alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
]
}
}
experiment = Split::Experiment.new(:my_experiment)
first = experiment.alternatives[0]
expect(first.name).to eq("control_opt")
expect(first.weight).to eq(0.67)
second = experiment.alternatives[1]
expect(second.name).to eq("second_opt")
alternative.completed_count.should eql(0)
end
describe 'conversion rate' do
it "should be 0 if there are no conversions" do
alternative = Split::Alternative.new('Basket', 'basket_text')
alts = experiment.alternatives
[
["control_opt", 0.34],
["second_opt", 0.215],
["third_opt", 0.23],
["fourth_opt", 0.215]
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
end
#
it "allows name param without probability" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt" },
"second_opt",
{ name: "third_opt", percent: 64 },
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.18],
["second_opt", 0.18],
["third_opt", 0.64],
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
end
end
it "should have a default participation count of 0" do
expect(alternative.participant_count).to eq(0)
end
it "should have a default completed count of 0 for each goal" do
expect(alternative.completed_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
end
it "should belong to an experiment" do
expect(alternative.experiment.name).to eq(experiment.name)
end
it "should save to redis" do
alternative.save
expect(Split.redis.exists?("basket_text:Basket")).to be true
end
it "should increment participation count" do
old_participant_count = alternative.participant_count
alternative.increment_participation
expect(alternative.participant_count).to eq(old_participant_count+1)
end
it "should increment completed count for each goal" do
old_default_completed_count = alternative.completed_count
old_completed_count_for_goal1 = alternative.completed_count(goal1)
old_completed_count_for_goal2 = alternative.completed_count(goal2)
alternative.increment_completion
alternative.increment_completion(goal1)
alternative.increment_completion(goal2)
expect(alternative.completed_count).to eq(old_default_completed_count+1)
expect(alternative.completed_count(goal1)).to eq(old_completed_count_for_goal1+1)
expect(alternative.completed_count(goal2)).to eq(old_completed_count_for_goal2+1)
end
it "can be reset" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(5, goal2)
alternative.set_completed_count(6)
alternative.reset
expect(alternative.participant_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
expect(alternative.completed_count).to eq(0)
end
it "should know if it is the control of an experiment" do
expect(alternative.control?).to be_truthy
expect(alternative2.control?).to be_falsey
end
describe "unfinished_count" do
it "should be difference between participant and completed counts" do
alternative.increment_participation
expect(alternative.unfinished_count).to eq(alternative.participant_count)
end
it "should return the correct unfinished_count" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(3, goal2)
alternative.set_completed_count(2)
expect(alternative.unfinished_count).to eq(1)
end
end
describe "conversion rate" do
it "should be 0 if there are no conversions" do
expect(alternative.completed_count).to eq(0)
expect(alternative.conversion_rate).to eq(0)
end
it "calculate conversion rate" do
expect(alternative).to receive(:participant_count).exactly(6).times.and_return(10)
expect(alternative).to receive(:completed_count).and_return(4)
expect(alternative.conversion_rate).to eq(0.4)
expect(alternative).to receive(:completed_count).with(goal1).and_return(5)
expect(alternative.conversion_rate(goal1)).to eq(0.5)
expect(alternative).to receive(:completed_count).with(goal2).and_return(6)
expect(alternative.conversion_rate(goal2)).to eq(0.6)
end
end
describe "probability winner" do
before do
experiment.calc_winning_alternatives
end
it "should have a probability of being the winning alternative (p_winner)" do
expect(alternative.p_winner).not_to be_nil
end
it "should have a probability of being the winner for each goal" do
expect(alternative.p_winner(goal1)).not_to be_nil
end
it "should be possible to set the p_winner" do
alternative.set_p_winner(0.5)
expect(alternative.p_winner).to eq(0.5)
end
it "should be possible to set the p_winner for each goal" do
alternative.set_p_winner(0.5, goal1)
expect(alternative.p_winner(goal1)).to eq(0.5)
end
end
describe "z score" do
it "should return an error string when the control has 0 people" do
expect(alternative2.z_score).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal1)).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal2)).to eq("Needs 30+ participants.")
end
it "should return an error string when the data is skewed or incomplete as per the np > 5 test" do
control = experiment.control
control.participant_count = 100
control.set_completed_count(50)
alternative2.participant_count = 50
alternative2.set_completed_count(1)
expect(alternative2.z_score).to eq("Needs 5+ conversions.")
end
it "should return a float for a z_score given proper data" do
control = experiment.control
control.participant_count = 120
control.set_completed_count(20)
alternative2.participant_count = 100
alternative2.set_completed_count(25)
expect(alternative2.z_score).to be_kind_of(Float)
expect(alternative2.z_score).to_not eq(0)
end
it "should correctly calculate a z_score given proper data" do
control = experiment.control
control.participant_count = 126
control.set_completed_count(89)
alternative2.participant_count = 142
alternative2.set_completed_count(119)
expect(alternative2.z_score.round(2)).to eq(2.58)
end
it "should be N/A for the control" do
control = experiment.control
expect(control.z_score).to eq("N/A")
expect(control.z_score(goal1)).to eq("N/A")
expect(control.z_score(goal2)).to eq("N/A")
end
it "should not blow up for Conversion Rates > 1" do
control = experiment.control
control.participant_count = 3474
control.set_completed_count(4244)
alternative2.participant_count = 3434
alternative2.set_completed_count(4358)
expect { control.z_score }.not_to raise_error
expect { alternative2.z_score }.not_to raise_error
end
end
describe "extra_info" do
it "reads saved value of recorded_info in redis" do
saved_recorded_info = { "key_1" => 1, "key_2" => "2" }
Split.redis.hset "#{alternative.experiment_name}:#{alternative.name}", "recorded_info", saved_recorded_info.to_json
extra_info = alternative.extra_info
expect(extra_info).to eql(saved_recorded_info)
end
end
describe "record_extra_info" do
it "saves key" do
alternative.record_extra_info("signup", 1)
expect(alternative.extra_info["signup"]).to eql(1)
end
it "adds value to saved key's value second argument is number" do
alternative.record_extra_info("signup", 1)
alternative.record_extra_info("signup", 2)
expect(alternative.extra_info["signup"]).to eql(3)
end
it "sets saved's key value to the second argument if it's a string" do
alternative.record_extra_info("signup", "Value 1")
expect(alternative.extra_info["signup"]).to eql("Value 1")
alternative.record_extra_info("signup", "Value 2")
expect(alternative.extra_info["signup"]).to eql("Value 2")
end
end
end
<MSG> An alternative should know if it is the control
<DFF> @@ -59,6 +59,15 @@ describe Split::Alternative do
alternative.completed_count.should eql(0)
end
+ it "should know if it is the control of an experiment" do
+ experiment = Split::Experiment.new('basket_text', 'Basket', "Cart")
+ experiment.save
+ alternative = Split::Alternative.find('Basket', 'basket_text')
+ alternative.control?.should be_true
+ alternative = Split::Alternative.find('Cart', 'basket_text')
+ alternative.control?.should be_false
+ end
+
describe 'conversion rate' do
it "should be 0 if there are no conversions" do
alternative = Split::Alternative.new('Basket', 'basket_text')
| 9 | An alternative should know if it is the control | 0 | .rb | rb | mit | splitrb/split |
10070906 | <NME> alternative_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/alternative"
describe Split::Alternative do
let(:alternative) {
Split::Alternative.new("Basket", "basket_text")
}
let(:alternative2) {
Split::Alternative.new("Cart", "basket_text")
}
let!(:experiment) {
Split::ExperimentCatalog.find_or_create({ "basket_text" => ["purchase", "refund"] }, "Basket", "Cart")
}
let(:goal1) { "purchase" }
let(:goal2) { "refund" }
it "should have goals" do
expect(alternative.goals).to eq(["purchase", "refund"])
end
it "should have and only return the name" do
expect(alternative.name).to eq("Basket")
end
describe "weights" do
it "should set the weights" do
experiment = Split::Experiment.new("basket_text", alternatives: [{ "Basket" => 0.6 }, { "Cart" => 0.4 }])
first = experiment.alternatives[0]
expect(first.name).to eq("Basket")
expect(first.weight).to eq(0.6)
second = experiment.alternatives[1]
expect(second.name).to eq("Cart")
expect(second.weight).to eq(0.4)
end
it "accepts probability on alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
]
}
}
experiment = Split::Experiment.new(:my_experiment)
first = experiment.alternatives[0]
expect(first.name).to eq("control_opt")
expect(first.weight).to eq(0.67)
second = experiment.alternatives[1]
expect(second.name).to eq("second_opt")
alternative.completed_count.should eql(0)
end
describe 'conversion rate' do
it "should be 0 if there are no conversions" do
alternative = Split::Alternative.new('Basket', 'basket_text')
alts = experiment.alternatives
[
["control_opt", 0.34],
["second_opt", 0.215],
["third_opt", 0.23],
["fourth_opt", 0.215]
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
end
#
it "allows name param without probability" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt" },
"second_opt",
{ name: "third_opt", percent: 64 },
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.18],
["second_opt", 0.18],
["third_opt", 0.64],
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
end
end
it "should have a default participation count of 0" do
expect(alternative.participant_count).to eq(0)
end
it "should have a default completed count of 0 for each goal" do
expect(alternative.completed_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
end
it "should belong to an experiment" do
expect(alternative.experiment.name).to eq(experiment.name)
end
it "should save to redis" do
alternative.save
expect(Split.redis.exists?("basket_text:Basket")).to be true
end
it "should increment participation count" do
old_participant_count = alternative.participant_count
alternative.increment_participation
expect(alternative.participant_count).to eq(old_participant_count+1)
end
it "should increment completed count for each goal" do
old_default_completed_count = alternative.completed_count
old_completed_count_for_goal1 = alternative.completed_count(goal1)
old_completed_count_for_goal2 = alternative.completed_count(goal2)
alternative.increment_completion
alternative.increment_completion(goal1)
alternative.increment_completion(goal2)
expect(alternative.completed_count).to eq(old_default_completed_count+1)
expect(alternative.completed_count(goal1)).to eq(old_completed_count_for_goal1+1)
expect(alternative.completed_count(goal2)).to eq(old_completed_count_for_goal2+1)
end
it "can be reset" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(5, goal2)
alternative.set_completed_count(6)
alternative.reset
expect(alternative.participant_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
expect(alternative.completed_count).to eq(0)
end
it "should know if it is the control of an experiment" do
expect(alternative.control?).to be_truthy
expect(alternative2.control?).to be_falsey
end
describe "unfinished_count" do
it "should be difference between participant and completed counts" do
alternative.increment_participation
expect(alternative.unfinished_count).to eq(alternative.participant_count)
end
it "should return the correct unfinished_count" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(3, goal2)
alternative.set_completed_count(2)
expect(alternative.unfinished_count).to eq(1)
end
end
describe "conversion rate" do
it "should be 0 if there are no conversions" do
expect(alternative.completed_count).to eq(0)
expect(alternative.conversion_rate).to eq(0)
end
it "calculate conversion rate" do
expect(alternative).to receive(:participant_count).exactly(6).times.and_return(10)
expect(alternative).to receive(:completed_count).and_return(4)
expect(alternative.conversion_rate).to eq(0.4)
expect(alternative).to receive(:completed_count).with(goal1).and_return(5)
expect(alternative.conversion_rate(goal1)).to eq(0.5)
expect(alternative).to receive(:completed_count).with(goal2).and_return(6)
expect(alternative.conversion_rate(goal2)).to eq(0.6)
end
end
describe "probability winner" do
before do
experiment.calc_winning_alternatives
end
it "should have a probability of being the winning alternative (p_winner)" do
expect(alternative.p_winner).not_to be_nil
end
it "should have a probability of being the winner for each goal" do
expect(alternative.p_winner(goal1)).not_to be_nil
end
it "should be possible to set the p_winner" do
alternative.set_p_winner(0.5)
expect(alternative.p_winner).to eq(0.5)
end
it "should be possible to set the p_winner for each goal" do
alternative.set_p_winner(0.5, goal1)
expect(alternative.p_winner(goal1)).to eq(0.5)
end
end
describe "z score" do
it "should return an error string when the control has 0 people" do
expect(alternative2.z_score).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal1)).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal2)).to eq("Needs 30+ participants.")
end
it "should return an error string when the data is skewed or incomplete as per the np > 5 test" do
control = experiment.control
control.participant_count = 100
control.set_completed_count(50)
alternative2.participant_count = 50
alternative2.set_completed_count(1)
expect(alternative2.z_score).to eq("Needs 5+ conversions.")
end
it "should return a float for a z_score given proper data" do
control = experiment.control
control.participant_count = 120
control.set_completed_count(20)
alternative2.participant_count = 100
alternative2.set_completed_count(25)
expect(alternative2.z_score).to be_kind_of(Float)
expect(alternative2.z_score).to_not eq(0)
end
it "should correctly calculate a z_score given proper data" do
control = experiment.control
control.participant_count = 126
control.set_completed_count(89)
alternative2.participant_count = 142
alternative2.set_completed_count(119)
expect(alternative2.z_score.round(2)).to eq(2.58)
end
it "should be N/A for the control" do
control = experiment.control
expect(control.z_score).to eq("N/A")
expect(control.z_score(goal1)).to eq("N/A")
expect(control.z_score(goal2)).to eq("N/A")
end
it "should not blow up for Conversion Rates > 1" do
control = experiment.control
control.participant_count = 3474
control.set_completed_count(4244)
alternative2.participant_count = 3434
alternative2.set_completed_count(4358)
expect { control.z_score }.not_to raise_error
expect { alternative2.z_score }.not_to raise_error
end
end
describe "extra_info" do
it "reads saved value of recorded_info in redis" do
saved_recorded_info = { "key_1" => 1, "key_2" => "2" }
Split.redis.hset "#{alternative.experiment_name}:#{alternative.name}", "recorded_info", saved_recorded_info.to_json
extra_info = alternative.extra_info
expect(extra_info).to eql(saved_recorded_info)
end
end
describe "record_extra_info" do
it "saves key" do
alternative.record_extra_info("signup", 1)
expect(alternative.extra_info["signup"]).to eql(1)
end
it "adds value to saved key's value second argument is number" do
alternative.record_extra_info("signup", 1)
alternative.record_extra_info("signup", 2)
expect(alternative.extra_info["signup"]).to eql(3)
end
it "sets saved's key value to the second argument if it's a string" do
alternative.record_extra_info("signup", "Value 1")
expect(alternative.extra_info["signup"]).to eql("Value 1")
alternative.record_extra_info("signup", "Value 2")
expect(alternative.extra_info["signup"]).to eql("Value 2")
end
end
end
<MSG> An alternative should know if it is the control
<DFF> @@ -59,6 +59,15 @@ describe Split::Alternative do
alternative.completed_count.should eql(0)
end
+ it "should know if it is the control of an experiment" do
+ experiment = Split::Experiment.new('basket_text', 'Basket', "Cart")
+ experiment.save
+ alternative = Split::Alternative.find('Basket', 'basket_text')
+ alternative.control?.should be_true
+ alternative = Split::Alternative.find('Cart', 'basket_text')
+ alternative.control?.should be_false
+ end
+
describe 'conversion rate' do
it "should be 0 if there are no conversions" do
alternative = Split::Alternative.new('Basket', 'basket_text')
| 9 | An alternative should know if it is the control | 0 | .rb | rb | mit | splitrb/split |
10070907 | <NME> jquery.meow.js
<BEF> (function ($, window) {
'use strict';
// Meow queue
var default_meow_area,
meows = {
queue: {},
add: function (meow) {
this.queue[meow.timestamp] = meow;
},
get: function (timestamp) {
return this.queue[timestamp];
},
remove: function (timestamp) {
delete this.queue[timestamp];
},
size: function () {
var timestamp,
size = 0;
for (timestamp in this.queue) {
if (this.queue.hasOwnProperty(timestamp)) { size += 1; }
}
return size;
}
},
// Meow constructor
Meow = function (options) {
var that = this;
this.timestamp = new Date().getTime(); // used to identify this meow and timeout
this.hovered = false; // whether mouse is over or not
if (typeof default_meow_area === 'undefined'
&& typeof options.container === 'undefined') {
default_meow_area = $(window.document.createElement('div'))
.attr({'id': ((new Date()).getTime()), 'class': 'meows'});
$('body').prepend(default_meow_area);
}
if (meows.size() <= 0) {
if (typeof options.beforeCreateFirst === 'function') {
options.beforeCreateFirst.call(that);
}
}
if (typeof options.container === 'string') {
this.container = $(options.container);
} else {
this.container = default_meow_area;
}
if (typeof options.title === 'string') {
this.title = options.title;
}
if (typeof options.message === 'string') {
this.message = options.message;
} else if (options.message instanceof $) {
if (options.message.is('input,textarea,select')) {
this.message = options.message.val();
} else {
this.message = options.message.text();
}
if (typeof this.title === 'undefined' && typeof options.message.attr('title') === 'string') {
this.title = options.message.attr('title');
}
}
if (typeof options.icon === 'string') {
this.icon = options.icon;
}
if (options.sticky) {
this.duration = Infinity;
} else {
if (typeof options.title === 'string') {
title = options.title;
}
console.log(options.message);
if (typeof options.message === 'string') {
message_type = 'string';
} else if (typeof options.message === 'object') {
message_type = options.message.first().nodeName;
if (typeof title === 'undefined' && typeof options.message.attr('title') === 'string') {
title = options.message.attr('title');
}
.attr('id', 'meow-' + this.timestamp.toString())
.addClass('meow')
.html($(window.document.createElement('div')).addClass('inner').html(this.message))
.hide()
.fadeIn(400));
this.manifest = $('#meow-' + this.timestamp.toString());
// Add title if it's defined
if (typeof this.title === 'string') {
this.manifest.find('.inner').prepend(
$(window.document.createElement('h1')).text(this.title)
);
}
// Add icon if it's defined
if (typeof that.icon === 'string') {
this.manifest.find('.inner').prepend(
$(window.document.createElement('div')).addClass('icon').html(
$(window.document.createElement('img')).attr('src', this.icon)
)
);
}
// Add close button if the meow isn't uncloseable
// TODO: this close button needs to be much prettier
if (options.closeable !== false) {
this.manifest.find('.inner').prepend(
$(window.document.createElement('a'))
.addClass('close')
.html('×')
.attr('href', '#close-meow-' + that.timestamp)
.click(function (e) {
e.preventDefault();
that.destroy();
})
);
}
this.manifest.bind('mouseenter mouseleave', function (event) {
if (event.type === 'mouseleave') {
that.hovered = false;
that.manifest.removeClass('hover');
// Destroy the mow on mouseleave if it's timed out
if (that.timestamp + that.duration <= new Date().getTime()) {
$(this).bind(trigger, function () {
options = methods.configMessage(args);
methods.createMessage(options);
console.log(options);
});
} else if (typeof trigger === 'undefined') {
options = methods.configMessage(args);
});
// Add a timeout if the duration isn't Infinity
if (this.duration !== Infinity) {
this.timeout = window.setTimeout(function () {
// Make sure this meow hasn't already been destroyed
if (typeof meows.get(that.timestamp) !== 'undefined') {
// Call callback if it's defined (this = meow DOM element)
if (typeof options.onTimeout === 'function') {
options.onTimeout.call(that.manifest);
}
// Don't destroy if user is hovering over meow
if (that.hovered !== true && typeof that === 'object') {
that.destroy();
}
}
}, that.duration);
}
this.destroy = function () {
if (that.destroyed !== true) {
// Call callback if it's defined (this = meow DOM element)
if (typeof options.beforeDestroy === 'function') {
options.beforeDestroy.call(that.manifest);
}
that.manifest.find('.inner').fadeTo(400, 0, function () {
that.manifest.slideUp(function () {
that.manifest.remove();
that.destroyed = true;
meows.remove(that.timestamp);
if (typeof options.afterDestroy === 'function') {
options.afterDestroy.call(null);
}
if (meows.size() <= 0) {
if (default_meow_area instanceof $) {
default_meow_area.remove();
default_meow_area = undefined;
}
if (typeof options.afterDestroyLast === 'function') {
options.afterDestroyLast.call(null);
}
}
});
});
}
};
};
$.fn.meow = function (args) {
var meow = new Meow(args);
meows.add(meow);
return meow;
};
$.meow = $.fn.meow;
}(jQuery, window));
<MSG> replaced first() with get(0)
<DFF> @@ -76,11 +76,10 @@
if (typeof options.title === 'string') {
title = options.title;
}
- console.log(options.message);
if (typeof options.message === 'string') {
message_type = 'string';
} else if (typeof options.message === 'object') {
- message_type = options.message.first().nodeName;
+ message_type = options.message.get(0).nodeName;
if (typeof title === 'undefined' && typeof options.message.attr('title') === 'string') {
title = options.message.attr('title');
}
@@ -132,7 +131,6 @@
$(this).bind(trigger, function () {
options = methods.configMessage(args);
methods.createMessage(options);
- console.log(options);
});
} else if (typeof trigger === 'undefined') {
options = methods.configMessage(args);
| 1 | replaced first() with get(0) | 3 | .js | meow | mit | zacstewart/Meow |
10070908 | <NME> jquery.meow.js
<BEF> (function ($, window) {
'use strict';
// Meow queue
var default_meow_area,
meows = {
queue: {},
add: function (meow) {
this.queue[meow.timestamp] = meow;
},
get: function (timestamp) {
return this.queue[timestamp];
},
remove: function (timestamp) {
delete this.queue[timestamp];
},
size: function () {
var timestamp,
size = 0;
for (timestamp in this.queue) {
if (this.queue.hasOwnProperty(timestamp)) { size += 1; }
}
return size;
}
},
// Meow constructor
Meow = function (options) {
var that = this;
this.timestamp = new Date().getTime(); // used to identify this meow and timeout
this.hovered = false; // whether mouse is over or not
if (typeof default_meow_area === 'undefined'
&& typeof options.container === 'undefined') {
default_meow_area = $(window.document.createElement('div'))
.attr({'id': ((new Date()).getTime()), 'class': 'meows'});
$('body').prepend(default_meow_area);
}
if (meows.size() <= 0) {
if (typeof options.beforeCreateFirst === 'function') {
options.beforeCreateFirst.call(that);
}
}
if (typeof options.container === 'string') {
this.container = $(options.container);
} else {
this.container = default_meow_area;
}
if (typeof options.title === 'string') {
this.title = options.title;
}
if (typeof options.message === 'string') {
this.message = options.message;
} else if (options.message instanceof $) {
if (options.message.is('input,textarea,select')) {
this.message = options.message.val();
} else {
this.message = options.message.text();
}
if (typeof this.title === 'undefined' && typeof options.message.attr('title') === 'string') {
this.title = options.message.attr('title');
}
}
if (typeof options.icon === 'string') {
this.icon = options.icon;
}
if (options.sticky) {
this.duration = Infinity;
} else {
if (typeof options.title === 'string') {
title = options.title;
}
console.log(options.message);
if (typeof options.message === 'string') {
message_type = 'string';
} else if (typeof options.message === 'object') {
message_type = options.message.first().nodeName;
if (typeof title === 'undefined' && typeof options.message.attr('title') === 'string') {
title = options.message.attr('title');
}
.attr('id', 'meow-' + this.timestamp.toString())
.addClass('meow')
.html($(window.document.createElement('div')).addClass('inner').html(this.message))
.hide()
.fadeIn(400));
this.manifest = $('#meow-' + this.timestamp.toString());
// Add title if it's defined
if (typeof this.title === 'string') {
this.manifest.find('.inner').prepend(
$(window.document.createElement('h1')).text(this.title)
);
}
// Add icon if it's defined
if (typeof that.icon === 'string') {
this.manifest.find('.inner').prepend(
$(window.document.createElement('div')).addClass('icon').html(
$(window.document.createElement('img')).attr('src', this.icon)
)
);
}
// Add close button if the meow isn't uncloseable
// TODO: this close button needs to be much prettier
if (options.closeable !== false) {
this.manifest.find('.inner').prepend(
$(window.document.createElement('a'))
.addClass('close')
.html('×')
.attr('href', '#close-meow-' + that.timestamp)
.click(function (e) {
e.preventDefault();
that.destroy();
})
);
}
this.manifest.bind('mouseenter mouseleave', function (event) {
if (event.type === 'mouseleave') {
that.hovered = false;
that.manifest.removeClass('hover');
// Destroy the mow on mouseleave if it's timed out
if (that.timestamp + that.duration <= new Date().getTime()) {
$(this).bind(trigger, function () {
options = methods.configMessage(args);
methods.createMessage(options);
console.log(options);
});
} else if (typeof trigger === 'undefined') {
options = methods.configMessage(args);
});
// Add a timeout if the duration isn't Infinity
if (this.duration !== Infinity) {
this.timeout = window.setTimeout(function () {
// Make sure this meow hasn't already been destroyed
if (typeof meows.get(that.timestamp) !== 'undefined') {
// Call callback if it's defined (this = meow DOM element)
if (typeof options.onTimeout === 'function') {
options.onTimeout.call(that.manifest);
}
// Don't destroy if user is hovering over meow
if (that.hovered !== true && typeof that === 'object') {
that.destroy();
}
}
}, that.duration);
}
this.destroy = function () {
if (that.destroyed !== true) {
// Call callback if it's defined (this = meow DOM element)
if (typeof options.beforeDestroy === 'function') {
options.beforeDestroy.call(that.manifest);
}
that.manifest.find('.inner').fadeTo(400, 0, function () {
that.manifest.slideUp(function () {
that.manifest.remove();
that.destroyed = true;
meows.remove(that.timestamp);
if (typeof options.afterDestroy === 'function') {
options.afterDestroy.call(null);
}
if (meows.size() <= 0) {
if (default_meow_area instanceof $) {
default_meow_area.remove();
default_meow_area = undefined;
}
if (typeof options.afterDestroyLast === 'function') {
options.afterDestroyLast.call(null);
}
}
});
});
}
};
};
$.fn.meow = function (args) {
var meow = new Meow(args);
meows.add(meow);
return meow;
};
$.meow = $.fn.meow;
}(jQuery, window));
<MSG> replaced first() with get(0)
<DFF> @@ -76,11 +76,10 @@
if (typeof options.title === 'string') {
title = options.title;
}
- console.log(options.message);
if (typeof options.message === 'string') {
message_type = 'string';
} else if (typeof options.message === 'object') {
- message_type = options.message.first().nodeName;
+ message_type = options.message.get(0).nodeName;
if (typeof title === 'undefined' && typeof options.message.attr('title') === 'string') {
title = options.message.attr('title');
}
@@ -132,7 +131,6 @@
$(this).bind(trigger, function () {
options = methods.configMessage(args);
methods.createMessage(options);
- console.log(options);
});
} else if (typeof trigger === 'undefined') {
options = methods.configMessage(args);
| 1 | replaced first() with get(0) | 3 | .js | meow | mit | zacstewart/Meow |
10070909 | <NME> redis_interface.rb
<BEF> # frozen_string_literal: true
module Split
# Simplifies the interface to Redis.
class RedisInterface
def initialize
self.redis = Split.redis
end
def persist_list(list_name, list_values)
if list_values.length > 0
redis.multi do |multi|
tmp_list = "#{list_name}_tmp"
multi.rpush(tmp_list, list_values)
multi.rename(tmp_list, list_name)
end
end
list_values
end
def add_to_set(set_name, value)
redis.sadd(set_name, value)
end
private
attr_accessor :redis
end
end
end
def make_list_length(list_name, new_length)
while list_length(list_name) > new_length
remove_last_item_from_list(list_name)
end
end
def add_to_set(set_name, value)
<MSG> Improve performance of RedisInterface#make_list_length (#509)
This implementation will only execute 1 to Redis command, instead of
2n (n being the total number of elements to trim from the list).
The operation will still take O(n) time, but the constants will be
much better, since only 1 network round trip is required.
<DFF> @@ -35,9 +35,7 @@ module Split
end
def make_list_length(list_name, new_length)
- while list_length(list_name) > new_length
- remove_last_item_from_list(list_name)
- end
+ redis.ltrim(list_name, 0, new_length - 1)
end
def add_to_set(set_name, value)
| 1 | Improve performance of RedisInterface#make_list_length (#509) | 3 | .rb | rb | mit | splitrb/split |
10070910 | <NME> redis_interface.rb
<BEF> # frozen_string_literal: true
module Split
# Simplifies the interface to Redis.
class RedisInterface
def initialize
self.redis = Split.redis
end
def persist_list(list_name, list_values)
if list_values.length > 0
redis.multi do |multi|
tmp_list = "#{list_name}_tmp"
multi.rpush(tmp_list, list_values)
multi.rename(tmp_list, list_name)
end
end
list_values
end
def add_to_set(set_name, value)
redis.sadd(set_name, value)
end
private
attr_accessor :redis
end
end
end
def make_list_length(list_name, new_length)
while list_length(list_name) > new_length
remove_last_item_from_list(list_name)
end
end
def add_to_set(set_name, value)
<MSG> Improve performance of RedisInterface#make_list_length (#509)
This implementation will only execute 1 to Redis command, instead of
2n (n being the total number of elements to trim from the list).
The operation will still take O(n) time, but the constants will be
much better, since only 1 network round trip is required.
<DFF> @@ -35,9 +35,7 @@ module Split
end
def make_list_length(list_name, new_length)
- while list_length(list_name) > new_length
- remove_last_item_from_list(list_name)
- end
+ redis.ltrim(list_name, 0, new_length - 1)
end
def add_to_set(set_name, value)
| 1 | Improve performance of RedisInterface#make_list_length (#509) | 3 | .rb | rb | mit | splitrb/split |
10070911 | <NME> redis_interface.rb
<BEF> # frozen_string_literal: true
module Split
# Simplifies the interface to Redis.
class RedisInterface
def initialize
self.redis = Split.redis
end
def persist_list(list_name, list_values)
if list_values.length > 0
redis.multi do |multi|
tmp_list = "#{list_name}_tmp"
multi.rpush(tmp_list, list_values)
multi.rename(tmp_list, list_name)
end
end
list_values
end
def add_to_set(set_name, value)
redis.sadd(set_name, value)
end
private
attr_accessor :redis
end
end
end
def make_list_length(list_name, new_length)
while list_length(list_name) > new_length
remove_last_item_from_list(list_name)
end
end
def add_to_set(set_name, value)
<MSG> Improve performance of RedisInterface#make_list_length (#509)
This implementation will only execute 1 to Redis command, instead of
2n (n being the total number of elements to trim from the list).
The operation will still take O(n) time, but the constants will be
much better, since only 1 network round trip is required.
<DFF> @@ -35,9 +35,7 @@ module Split
end
def make_list_length(list_name, new_length)
- while list_length(list_name) > new_length
- remove_last_item_from_list(list_name)
- end
+ redis.ltrim(list_name, 0, new_length - 1)
end
def add_to_set(set_name, value)
| 1 | Improve performance of RedisInterface#make_list_length (#509) | 3 | .rb | rb | mit | splitrb/split |
10070912 | <NME> version.rb
<BEF> module Split
VERSION = "0.3.0"
end
VERSION = "4.0.1"
end
<MSG> Version 0.3.1
<DFF> @@ -1,3 +1,3 @@
module Split
- VERSION = "0.3.0"
+ VERSION = "0.3.1"
end
| 1 | Version 0.3.1 | 1 | .rb | rb | mit | splitrb/split |
10070913 | <NME> version.rb
<BEF> module Split
VERSION = "0.3.0"
end
VERSION = "4.0.1"
end
<MSG> Version 0.3.1
<DFF> @@ -1,3 +1,3 @@
module Split
- VERSION = "0.3.0"
+ VERSION = "0.3.1"
end
| 1 | Version 0.3.1 | 1 | .rb | rb | mit | splitrb/split |
10070914 | <NME> version.rb
<BEF> module Split
VERSION = "0.3.0"
end
VERSION = "4.0.1"
end
<MSG> Version 0.3.1
<DFF> @@ -1,3 +1,3 @@
module Split
- VERSION = "0.3.0"
+ VERSION = "0.3.1"
end
| 1 | Version 0.3.1 | 1 | .rb | rb | mit | splitrb/split |
10070915 | <NME> alternative_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/alternative"
describe Split::Alternative do
let(:alternative) {
Split::Alternative.new("Basket", "basket_text")
}
let(:alternative2) {
Split::Alternative.new("Cart", "basket_text")
}
let!(:experiment) {
Split::ExperimentCatalog.find_or_create({ "basket_text" => ["purchase", "refund"] }, "Basket", "Cart")
}
let(:goal1) { "purchase" }
let(:goal2) { "refund" }
it "should have goals" do
expect(alternative.goals).to eq(["purchase", "refund"])
end
it "should have and only return the name" do
expect(alternative.name).to eq("Basket")
end
describe "weights" do
it "should set the weights" do
experiment = Split::Experiment.new("basket_text", alternatives: [{ "Basket" => 0.6 }, { "Cart" => 0.4 }])
first = experiment.alternatives[0]
expect(first.name).to eq("Basket")
expect(first.weight).to eq(0.6)
second = experiment.alternatives[1]
expect(second.name).to eq("Cart")
expect(second.weight).to eq(0.4)
end
it "accepts probability on alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
]
}
}
experiment = Split::Experiment.new(:my_experiment)
first = experiment.alternatives[0]
expect(first.name).to eq("control_opt")
expect(first.weight).to eq(0.67)
second = experiment.alternatives[1]
expect(second.name).to eq("second_opt")
expect(second.weight).to eq(0.1)
end
it "accepts probability on some alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 34 },
"second_opt",
{ name: "third_opt", percent: 23 },
"fourth_opt",
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.34],
["second_opt", 0.215],
["third_opt", 0.23],
["fourth_opt", 0.215]
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
alternative.conversion_rate.should eql(0)
end
it "does something" do
alternative = Split::Alternative.new('Basket', 'basket_text')
alternative.stub(:participant_count).and_return(10)
alternative.stub(:completed_count).and_return(4)
"second_opt",
{ name: "third_opt", percent: 64 },
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.18],
["second_opt", 0.18],
["third_opt", 0.64],
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
end
end
it "should have a default participation count of 0" do
expect(alternative.participant_count).to eq(0)
end
it "should have a default completed count of 0 for each goal" do
expect(alternative.completed_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
end
it "should belong to an experiment" do
expect(alternative.experiment.name).to eq(experiment.name)
end
it "should save to redis" do
alternative.save
expect(Split.redis.exists?("basket_text:Basket")).to be true
end
it "should increment participation count" do
old_participant_count = alternative.participant_count
alternative.increment_participation
expect(alternative.participant_count).to eq(old_participant_count+1)
end
it "should increment completed count for each goal" do
old_default_completed_count = alternative.completed_count
old_completed_count_for_goal1 = alternative.completed_count(goal1)
old_completed_count_for_goal2 = alternative.completed_count(goal2)
alternative.increment_completion
alternative.increment_completion(goal1)
alternative.increment_completion(goal2)
expect(alternative.completed_count).to eq(old_default_completed_count+1)
expect(alternative.completed_count(goal1)).to eq(old_completed_count_for_goal1+1)
expect(alternative.completed_count(goal2)).to eq(old_completed_count_for_goal2+1)
end
it "can be reset" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(5, goal2)
alternative.set_completed_count(6)
alternative.reset
expect(alternative.participant_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
expect(alternative.completed_count).to eq(0)
end
it "should know if it is the control of an experiment" do
expect(alternative.control?).to be_truthy
expect(alternative2.control?).to be_falsey
end
describe "unfinished_count" do
it "should be difference between participant and completed counts" do
alternative.increment_participation
expect(alternative.unfinished_count).to eq(alternative.participant_count)
end
it "should return the correct unfinished_count" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(3, goal2)
alternative.set_completed_count(2)
expect(alternative.unfinished_count).to eq(1)
end
end
describe "conversion rate" do
it "should be 0 if there are no conversions" do
expect(alternative.completed_count).to eq(0)
expect(alternative.conversion_rate).to eq(0)
end
it "calculate conversion rate" do
expect(alternative).to receive(:participant_count).exactly(6).times.and_return(10)
expect(alternative).to receive(:completed_count).and_return(4)
expect(alternative.conversion_rate).to eq(0.4)
expect(alternative).to receive(:completed_count).with(goal1).and_return(5)
expect(alternative.conversion_rate(goal1)).to eq(0.5)
expect(alternative).to receive(:completed_count).with(goal2).and_return(6)
expect(alternative.conversion_rate(goal2)).to eq(0.6)
end
end
describe "probability winner" do
before do
experiment.calc_winning_alternatives
end
it "should have a probability of being the winning alternative (p_winner)" do
expect(alternative.p_winner).not_to be_nil
end
it "should have a probability of being the winner for each goal" do
expect(alternative.p_winner(goal1)).not_to be_nil
end
it "should be possible to set the p_winner" do
alternative.set_p_winner(0.5)
expect(alternative.p_winner).to eq(0.5)
end
it "should be possible to set the p_winner for each goal" do
alternative.set_p_winner(0.5, goal1)
expect(alternative.p_winner(goal1)).to eq(0.5)
end
end
describe "z score" do
it "should return an error string when the control has 0 people" do
expect(alternative2.z_score).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal1)).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal2)).to eq("Needs 30+ participants.")
end
it "should return an error string when the data is skewed or incomplete as per the np > 5 test" do
control = experiment.control
control.participant_count = 100
control.set_completed_count(50)
alternative2.participant_count = 50
alternative2.set_completed_count(1)
expect(alternative2.z_score).to eq("Needs 5+ conversions.")
end
it "should return a float for a z_score given proper data" do
control = experiment.control
control.participant_count = 120
control.set_completed_count(20)
alternative2.participant_count = 100
alternative2.set_completed_count(25)
expect(alternative2.z_score).to be_kind_of(Float)
expect(alternative2.z_score).to_not eq(0)
end
it "should correctly calculate a z_score given proper data" do
control = experiment.control
control.participant_count = 126
control.set_completed_count(89)
alternative2.participant_count = 142
alternative2.set_completed_count(119)
expect(alternative2.z_score.round(2)).to eq(2.58)
end
it "should be N/A for the control" do
control = experiment.control
expect(control.z_score).to eq("N/A")
expect(control.z_score(goal1)).to eq("N/A")
expect(control.z_score(goal2)).to eq("N/A")
end
it "should not blow up for Conversion Rates > 1" do
control = experiment.control
control.participant_count = 3474
control.set_completed_count(4244)
alternative2.participant_count = 3434
alternative2.set_completed_count(4358)
expect { control.z_score }.not_to raise_error
expect { alternative2.z_score }.not_to raise_error
end
end
describe "extra_info" do
it "reads saved value of recorded_info in redis" do
saved_recorded_info = { "key_1" => 1, "key_2" => "2" }
Split.redis.hset "#{alternative.experiment_name}:#{alternative.name}", "recorded_info", saved_recorded_info.to_json
extra_info = alternative.extra_info
expect(extra_info).to eql(saved_recorded_info)
end
end
describe "record_extra_info" do
it "saves key" do
alternative.record_extra_info("signup", 1)
expect(alternative.extra_info["signup"]).to eql(1)
end
it "adds value to saved key's value second argument is number" do
alternative.record_extra_info("signup", 1)
alternative.record_extra_info("signup", 2)
expect(alternative.extra_info["signup"]).to eql(3)
end
it "sets saved's key value to the second argument if it's a string" do
alternative.record_extra_info("signup", "Value 1")
expect(alternative.extra_info["signup"]).to eql("Value 1")
alternative.record_extra_info("signup", "Value 2")
expect(alternative.extra_info["signup"]).to eql("Value 2")
end
end
end
<MSG> Fixed an alternative spec name
<DFF> @@ -86,7 +86,7 @@ describe Split::Alternative do
alternative.conversion_rate.should eql(0)
end
- it "does something" do
+ it "calculate conversion rate" do
alternative = Split::Alternative.new('Basket', 'basket_text')
alternative.stub(:participant_count).and_return(10)
alternative.stub(:completed_count).and_return(4)
| 1 | Fixed an alternative spec name | 1 | .rb | rb | mit | splitrb/split |
10070916 | <NME> alternative_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/alternative"
describe Split::Alternative do
let(:alternative) {
Split::Alternative.new("Basket", "basket_text")
}
let(:alternative2) {
Split::Alternative.new("Cart", "basket_text")
}
let!(:experiment) {
Split::ExperimentCatalog.find_or_create({ "basket_text" => ["purchase", "refund"] }, "Basket", "Cart")
}
let(:goal1) { "purchase" }
let(:goal2) { "refund" }
it "should have goals" do
expect(alternative.goals).to eq(["purchase", "refund"])
end
it "should have and only return the name" do
expect(alternative.name).to eq("Basket")
end
describe "weights" do
it "should set the weights" do
experiment = Split::Experiment.new("basket_text", alternatives: [{ "Basket" => 0.6 }, { "Cart" => 0.4 }])
first = experiment.alternatives[0]
expect(first.name).to eq("Basket")
expect(first.weight).to eq(0.6)
second = experiment.alternatives[1]
expect(second.name).to eq("Cart")
expect(second.weight).to eq(0.4)
end
it "accepts probability on alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
]
}
}
experiment = Split::Experiment.new(:my_experiment)
first = experiment.alternatives[0]
expect(first.name).to eq("control_opt")
expect(first.weight).to eq(0.67)
second = experiment.alternatives[1]
expect(second.name).to eq("second_opt")
expect(second.weight).to eq(0.1)
end
it "accepts probability on some alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 34 },
"second_opt",
{ name: "third_opt", percent: 23 },
"fourth_opt",
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.34],
["second_opt", 0.215],
["third_opt", 0.23],
["fourth_opt", 0.215]
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
alternative.conversion_rate.should eql(0)
end
it "does something" do
alternative = Split::Alternative.new('Basket', 'basket_text')
alternative.stub(:participant_count).and_return(10)
alternative.stub(:completed_count).and_return(4)
"second_opt",
{ name: "third_opt", percent: 64 },
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.18],
["second_opt", 0.18],
["third_opt", 0.64],
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
end
end
it "should have a default participation count of 0" do
expect(alternative.participant_count).to eq(0)
end
it "should have a default completed count of 0 for each goal" do
expect(alternative.completed_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
end
it "should belong to an experiment" do
expect(alternative.experiment.name).to eq(experiment.name)
end
it "should save to redis" do
alternative.save
expect(Split.redis.exists?("basket_text:Basket")).to be true
end
it "should increment participation count" do
old_participant_count = alternative.participant_count
alternative.increment_participation
expect(alternative.participant_count).to eq(old_participant_count+1)
end
it "should increment completed count for each goal" do
old_default_completed_count = alternative.completed_count
old_completed_count_for_goal1 = alternative.completed_count(goal1)
old_completed_count_for_goal2 = alternative.completed_count(goal2)
alternative.increment_completion
alternative.increment_completion(goal1)
alternative.increment_completion(goal2)
expect(alternative.completed_count).to eq(old_default_completed_count+1)
expect(alternative.completed_count(goal1)).to eq(old_completed_count_for_goal1+1)
expect(alternative.completed_count(goal2)).to eq(old_completed_count_for_goal2+1)
end
it "can be reset" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(5, goal2)
alternative.set_completed_count(6)
alternative.reset
expect(alternative.participant_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
expect(alternative.completed_count).to eq(0)
end
it "should know if it is the control of an experiment" do
expect(alternative.control?).to be_truthy
expect(alternative2.control?).to be_falsey
end
describe "unfinished_count" do
it "should be difference between participant and completed counts" do
alternative.increment_participation
expect(alternative.unfinished_count).to eq(alternative.participant_count)
end
it "should return the correct unfinished_count" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(3, goal2)
alternative.set_completed_count(2)
expect(alternative.unfinished_count).to eq(1)
end
end
describe "conversion rate" do
it "should be 0 if there are no conversions" do
expect(alternative.completed_count).to eq(0)
expect(alternative.conversion_rate).to eq(0)
end
it "calculate conversion rate" do
expect(alternative).to receive(:participant_count).exactly(6).times.and_return(10)
expect(alternative).to receive(:completed_count).and_return(4)
expect(alternative.conversion_rate).to eq(0.4)
expect(alternative).to receive(:completed_count).with(goal1).and_return(5)
expect(alternative.conversion_rate(goal1)).to eq(0.5)
expect(alternative).to receive(:completed_count).with(goal2).and_return(6)
expect(alternative.conversion_rate(goal2)).to eq(0.6)
end
end
describe "probability winner" do
before do
experiment.calc_winning_alternatives
end
it "should have a probability of being the winning alternative (p_winner)" do
expect(alternative.p_winner).not_to be_nil
end
it "should have a probability of being the winner for each goal" do
expect(alternative.p_winner(goal1)).not_to be_nil
end
it "should be possible to set the p_winner" do
alternative.set_p_winner(0.5)
expect(alternative.p_winner).to eq(0.5)
end
it "should be possible to set the p_winner for each goal" do
alternative.set_p_winner(0.5, goal1)
expect(alternative.p_winner(goal1)).to eq(0.5)
end
end
describe "z score" do
it "should return an error string when the control has 0 people" do
expect(alternative2.z_score).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal1)).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal2)).to eq("Needs 30+ participants.")
end
it "should return an error string when the data is skewed or incomplete as per the np > 5 test" do
control = experiment.control
control.participant_count = 100
control.set_completed_count(50)
alternative2.participant_count = 50
alternative2.set_completed_count(1)
expect(alternative2.z_score).to eq("Needs 5+ conversions.")
end
it "should return a float for a z_score given proper data" do
control = experiment.control
control.participant_count = 120
control.set_completed_count(20)
alternative2.participant_count = 100
alternative2.set_completed_count(25)
expect(alternative2.z_score).to be_kind_of(Float)
expect(alternative2.z_score).to_not eq(0)
end
it "should correctly calculate a z_score given proper data" do
control = experiment.control
control.participant_count = 126
control.set_completed_count(89)
alternative2.participant_count = 142
alternative2.set_completed_count(119)
expect(alternative2.z_score.round(2)).to eq(2.58)
end
it "should be N/A for the control" do
control = experiment.control
expect(control.z_score).to eq("N/A")
expect(control.z_score(goal1)).to eq("N/A")
expect(control.z_score(goal2)).to eq("N/A")
end
it "should not blow up for Conversion Rates > 1" do
control = experiment.control
control.participant_count = 3474
control.set_completed_count(4244)
alternative2.participant_count = 3434
alternative2.set_completed_count(4358)
expect { control.z_score }.not_to raise_error
expect { alternative2.z_score }.not_to raise_error
end
end
describe "extra_info" do
it "reads saved value of recorded_info in redis" do
saved_recorded_info = { "key_1" => 1, "key_2" => "2" }
Split.redis.hset "#{alternative.experiment_name}:#{alternative.name}", "recorded_info", saved_recorded_info.to_json
extra_info = alternative.extra_info
expect(extra_info).to eql(saved_recorded_info)
end
end
describe "record_extra_info" do
it "saves key" do
alternative.record_extra_info("signup", 1)
expect(alternative.extra_info["signup"]).to eql(1)
end
it "adds value to saved key's value second argument is number" do
alternative.record_extra_info("signup", 1)
alternative.record_extra_info("signup", 2)
expect(alternative.extra_info["signup"]).to eql(3)
end
it "sets saved's key value to the second argument if it's a string" do
alternative.record_extra_info("signup", "Value 1")
expect(alternative.extra_info["signup"]).to eql("Value 1")
alternative.record_extra_info("signup", "Value 2")
expect(alternative.extra_info["signup"]).to eql("Value 2")
end
end
end
<MSG> Fixed an alternative spec name
<DFF> @@ -86,7 +86,7 @@ describe Split::Alternative do
alternative.conversion_rate.should eql(0)
end
- it "does something" do
+ it "calculate conversion rate" do
alternative = Split::Alternative.new('Basket', 'basket_text')
alternative.stub(:participant_count).and_return(10)
alternative.stub(:completed_count).and_return(4)
| 1 | Fixed an alternative spec name | 1 | .rb | rb | mit | splitrb/split |
10070917 | <NME> alternative_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/alternative"
describe Split::Alternative do
let(:alternative) {
Split::Alternative.new("Basket", "basket_text")
}
let(:alternative2) {
Split::Alternative.new("Cart", "basket_text")
}
let!(:experiment) {
Split::ExperimentCatalog.find_or_create({ "basket_text" => ["purchase", "refund"] }, "Basket", "Cart")
}
let(:goal1) { "purchase" }
let(:goal2) { "refund" }
it "should have goals" do
expect(alternative.goals).to eq(["purchase", "refund"])
end
it "should have and only return the name" do
expect(alternative.name).to eq("Basket")
end
describe "weights" do
it "should set the weights" do
experiment = Split::Experiment.new("basket_text", alternatives: [{ "Basket" => 0.6 }, { "Cart" => 0.4 }])
first = experiment.alternatives[0]
expect(first.name).to eq("Basket")
expect(first.weight).to eq(0.6)
second = experiment.alternatives[1]
expect(second.name).to eq("Cart")
expect(second.weight).to eq(0.4)
end
it "accepts probability on alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
]
}
}
experiment = Split::Experiment.new(:my_experiment)
first = experiment.alternatives[0]
expect(first.name).to eq("control_opt")
expect(first.weight).to eq(0.67)
second = experiment.alternatives[1]
expect(second.name).to eq("second_opt")
expect(second.weight).to eq(0.1)
end
it "accepts probability on some alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 34 },
"second_opt",
{ name: "third_opt", percent: 23 },
"fourth_opt",
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.34],
["second_opt", 0.215],
["third_opt", 0.23],
["fourth_opt", 0.215]
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
alternative.conversion_rate.should eql(0)
end
it "does something" do
alternative = Split::Alternative.new('Basket', 'basket_text')
alternative.stub(:participant_count).and_return(10)
alternative.stub(:completed_count).and_return(4)
"second_opt",
{ name: "third_opt", percent: 64 },
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.18],
["second_opt", 0.18],
["third_opt", 0.64],
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
end
end
it "should have a default participation count of 0" do
expect(alternative.participant_count).to eq(0)
end
it "should have a default completed count of 0 for each goal" do
expect(alternative.completed_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
end
it "should belong to an experiment" do
expect(alternative.experiment.name).to eq(experiment.name)
end
it "should save to redis" do
alternative.save
expect(Split.redis.exists?("basket_text:Basket")).to be true
end
it "should increment participation count" do
old_participant_count = alternative.participant_count
alternative.increment_participation
expect(alternative.participant_count).to eq(old_participant_count+1)
end
it "should increment completed count for each goal" do
old_default_completed_count = alternative.completed_count
old_completed_count_for_goal1 = alternative.completed_count(goal1)
old_completed_count_for_goal2 = alternative.completed_count(goal2)
alternative.increment_completion
alternative.increment_completion(goal1)
alternative.increment_completion(goal2)
expect(alternative.completed_count).to eq(old_default_completed_count+1)
expect(alternative.completed_count(goal1)).to eq(old_completed_count_for_goal1+1)
expect(alternative.completed_count(goal2)).to eq(old_completed_count_for_goal2+1)
end
it "can be reset" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(5, goal2)
alternative.set_completed_count(6)
alternative.reset
expect(alternative.participant_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
expect(alternative.completed_count).to eq(0)
end
it "should know if it is the control of an experiment" do
expect(alternative.control?).to be_truthy
expect(alternative2.control?).to be_falsey
end
describe "unfinished_count" do
it "should be difference between participant and completed counts" do
alternative.increment_participation
expect(alternative.unfinished_count).to eq(alternative.participant_count)
end
it "should return the correct unfinished_count" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(3, goal2)
alternative.set_completed_count(2)
expect(alternative.unfinished_count).to eq(1)
end
end
describe "conversion rate" do
it "should be 0 if there are no conversions" do
expect(alternative.completed_count).to eq(0)
expect(alternative.conversion_rate).to eq(0)
end
it "calculate conversion rate" do
expect(alternative).to receive(:participant_count).exactly(6).times.and_return(10)
expect(alternative).to receive(:completed_count).and_return(4)
expect(alternative.conversion_rate).to eq(0.4)
expect(alternative).to receive(:completed_count).with(goal1).and_return(5)
expect(alternative.conversion_rate(goal1)).to eq(0.5)
expect(alternative).to receive(:completed_count).with(goal2).and_return(6)
expect(alternative.conversion_rate(goal2)).to eq(0.6)
end
end
describe "probability winner" do
before do
experiment.calc_winning_alternatives
end
it "should have a probability of being the winning alternative (p_winner)" do
expect(alternative.p_winner).not_to be_nil
end
it "should have a probability of being the winner for each goal" do
expect(alternative.p_winner(goal1)).not_to be_nil
end
it "should be possible to set the p_winner" do
alternative.set_p_winner(0.5)
expect(alternative.p_winner).to eq(0.5)
end
it "should be possible to set the p_winner for each goal" do
alternative.set_p_winner(0.5, goal1)
expect(alternative.p_winner(goal1)).to eq(0.5)
end
end
describe "z score" do
it "should return an error string when the control has 0 people" do
expect(alternative2.z_score).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal1)).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal2)).to eq("Needs 30+ participants.")
end
it "should return an error string when the data is skewed or incomplete as per the np > 5 test" do
control = experiment.control
control.participant_count = 100
control.set_completed_count(50)
alternative2.participant_count = 50
alternative2.set_completed_count(1)
expect(alternative2.z_score).to eq("Needs 5+ conversions.")
end
it "should return a float for a z_score given proper data" do
control = experiment.control
control.participant_count = 120
control.set_completed_count(20)
alternative2.participant_count = 100
alternative2.set_completed_count(25)
expect(alternative2.z_score).to be_kind_of(Float)
expect(alternative2.z_score).to_not eq(0)
end
it "should correctly calculate a z_score given proper data" do
control = experiment.control
control.participant_count = 126
control.set_completed_count(89)
alternative2.participant_count = 142
alternative2.set_completed_count(119)
expect(alternative2.z_score.round(2)).to eq(2.58)
end
it "should be N/A for the control" do
control = experiment.control
expect(control.z_score).to eq("N/A")
expect(control.z_score(goal1)).to eq("N/A")
expect(control.z_score(goal2)).to eq("N/A")
end
it "should not blow up for Conversion Rates > 1" do
control = experiment.control
control.participant_count = 3474
control.set_completed_count(4244)
alternative2.participant_count = 3434
alternative2.set_completed_count(4358)
expect { control.z_score }.not_to raise_error
expect { alternative2.z_score }.not_to raise_error
end
end
describe "extra_info" do
it "reads saved value of recorded_info in redis" do
saved_recorded_info = { "key_1" => 1, "key_2" => "2" }
Split.redis.hset "#{alternative.experiment_name}:#{alternative.name}", "recorded_info", saved_recorded_info.to_json
extra_info = alternative.extra_info
expect(extra_info).to eql(saved_recorded_info)
end
end
describe "record_extra_info" do
it "saves key" do
alternative.record_extra_info("signup", 1)
expect(alternative.extra_info["signup"]).to eql(1)
end
it "adds value to saved key's value second argument is number" do
alternative.record_extra_info("signup", 1)
alternative.record_extra_info("signup", 2)
expect(alternative.extra_info["signup"]).to eql(3)
end
it "sets saved's key value to the second argument if it's a string" do
alternative.record_extra_info("signup", "Value 1")
expect(alternative.extra_info["signup"]).to eql("Value 1")
alternative.record_extra_info("signup", "Value 2")
expect(alternative.extra_info["signup"]).to eql("Value 2")
end
end
end
<MSG> Fixed an alternative spec name
<DFF> @@ -86,7 +86,7 @@ describe Split::Alternative do
alternative.conversion_rate.should eql(0)
end
- it "does something" do
+ it "calculate conversion rate" do
alternative = Split::Alternative.new('Basket', 'basket_text')
alternative.stub(:participant_count).and_return(10)
alternative.stub(:completed_count).and_return(4)
| 1 | Fixed an alternative spec name | 1 | .rb | rb | mit | splitrb/split |
10070918 | <NME> README.md
<BEF> # [Split](https://libraries.io/rubygems/split)
[](http://badge.fury.io/rb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://codeclimate.com/github/splitrb/split/coverage)
[](https://github.com/RichardLitt/standard-readme)
[](http://badge.fury.io/rb/split)
[](http://travis-ci.org/splitrb/split)
[](https://gemnasium.com/splitrb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://coveralls.io/r/splitrb/split)
Split is heavily inspired by the [Abingo](https://github.com/ryanb/abingo) and [Vanity](https://github.com/assaf/vanity) Rails A/B testing plugins and [Resque](https://github.com/resque/resque) in its use of Redis.
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
## Install
### Requirements
Split v4.0+ is currently tested with Ruby >= 2.5 and Rails >= 5.2.
If your project requires compatibility with Ruby 2.4.x or older Rails versions. You can try v3.0 or v0.8.0(for Ruby 1.9.3)
Split uses Redis as a datastore.
Split only supports Redis 4.0 or greater.
If you're on OS X, Homebrew is the simplest way to install Redis:
```bash
brew install redis
redis-server /usr/local/etc/redis.conf
```
You now have a Redis daemon running on port `6379`.
### Setup
```bash
gem install split
```
#### Rails
Adding `gem 'split'` to your Gemfile will autoload it when rails starts up, as long as you've configured Redis it will 'just work'.
#### Sinatra
To configure Sinatra with Split you need to enable sessions and mix in the helper methods. Add the following lines at the top of your Sinatra app:
```ruby
require 'split'
class MySinatraApp < Sinatra::Base
enable :sessions
helpers Split::Helper
get '/' do
...
end
```
## Usage
To begin your A/B test use the `ab_test` method, naming your experiment with the first argument and then the different alternatives which you wish to test on as the other arguments.
`ab_test` returns one of the alternatives, if a user has already seen that test they will get the same alternative as before, which you can use to split your code on.
It can be used to render different templates, show different text or any other case based logic.
`ab_finished` is used to make a completion of an experiment, or conversion.
Example: View
```erb
<% ab_test(:login_button, "/images/button1.jpg", "/images/button2.jpg") do |button_file| %>
<%= image_tag(button_file, alt: "Login!") %>
<% end %>
```
Example: Controller
```ruby
def register_new_user
# See what level of free points maximizes users' decision to buy replacement points.
@starter_points = ab_test(:new_user_free_points, '100', '200', '300')
end
```
Example: Conversion tracking (in a controller!)
```ruby
def buy_new_points
# some business logic
ab_finished(:new_user_free_points)
end
```
Example: Conversion tracking (in a view)
```erb
Thanks for signing up, dude! <% ab_finished(:signup_page_redesign) %>
```
You can find more examples, tutorials and guides on the [wiki](https://github.com/splitrb/split/wiki).
## Statistical Validity
Split has two options for you to use to determine which alternative is the best.
The first option (default on the dashboard) uses a z test (n>30) for the difference between your control and alternative conversion rates to calculate statistical significance. This test will tell you whether an alternative is better or worse than your control, but it will not distinguish between which alternative is the best in an experiment with multiple alternatives. Split will only tell you if your experiment is 90%, 95%, or 99% significant, and this test only works if you have more than 30 participants and 5 conversions for each branch.
As per this [blog post](https://www.evanmiller.org/how-not-to-run-an-ab-test.html) on the pitfalls of A/B testing, it is highly recommended that you determine your requisite sample size for each branch before running the experiment. Otherwise, you'll have an increased rate of false positives (experiments which show a significant effect where really there is none).
[Here](https://www.evanmiller.org/ab-testing/sample-size.html) is a sample size calculator for your convenience.
The second option uses simulations from a beta distribution to determine the probability that the given alternative is the winner compared to all other alternatives. You can view these probabilities by clicking on the drop-down menu labeled "Confidence." This option should be used when the experiment has more than just 1 control and 1 alternative. It can also be used for a simple, 2-alternative A/B test.
Calculating the beta-distribution simulations for a large number of experiments can be slow, so the results are cached. You can specify how often they should be recalculated (the default is once per day).
```ruby
Split.configure do |config|
config.winning_alternative_recalculation_interval = 3600 # 1 hour
end
```
## Extras
### Weighted alternatives
Perhaps you only want to show an alternative to 10% of your visitors because it is very experimental or not yet fully load tested.
To do this you can pass a weight with each alternative in the following ways:
```ruby
ab_test(:homepage_design, {'Old' => 18}, {'New' => 2})
ab_test(:homepage_design, 'Old', {'New' => 1.0/9})
ab_test(:homepage_design, {'Old' => 9}, 'New')
```
This will only show the new alternative to visitors 1 in 10 times, the default weight for an alternative is 1.
### Overriding alternatives
For development and testing, you may wish to force your app to always return an alternative.
You can do this by passing it as a parameter in the url.
If you have an experiment called `button_color` with alternatives called `red` and `blue` used on your homepage, a url such as:
http://myawesomesite.com?ab_test[button_color]=red
will always have red buttons. This won't be stored in your session or count towards to results, unless you set the `store_override` configuration option.
In the event you want to disable all tests without having to know the individual experiment names, add a `SPLIT_DISABLE` query parameter.
http://myawesomesite.com?SPLIT_DISABLE=true
It is not required to send `SPLIT_DISABLE=false` to activate Split.
### Rspec Helper
To aid testing with RSpec, write `spec/support/split_helper.rb` and call `use_ab_test(alternatives_by_experiment)` in your specs as instructed below:
```ruby
# Create a file with these contents at 'spec/support/split_helper.rb'
# and ensure it is `require`d in your rails_helper.rb or spec_helper.rb
module SplitHelper
# Force a specific experiment alternative to always be returned:
# use_ab_test(signup_form: "single_page")
#
# Force alternatives for multiple experiments:
# use_ab_test(signup_form: "single_page", pricing: "show_enterprise_prices")
#
def use_ab_test(alternatives_by_experiment)
allow_any_instance_of(Split::Helper).to receive(:ab_test) do |_receiver, experiment, &block|
variant = alternatives_by_experiment.fetch(experiment) { |key| raise "Unknown experiment '#{key}'" }
block.call(variant) unless block.nil?
variant
end
end
end
# Make the `use_ab_test` method available to all specs:
RSpec.configure do |config|
config.include SplitHelper
end
```
Now you can call `use_ab_test(alternatives_by_experiment)` in your specs, for example:
```ruby
it "registers using experimental signup" do
use_ab_test experiment_name: "alternative_name"
post "/signups"
...
end
```
### Starting experiments manually
By default new A/B tests will be active right after deployment. In case you would like to start new test a while after
the deploy, you can do it by setting the `start_manually` configuration option to `true`.
After choosing this option tests won't be started right after deploy, but after pressing the `Start` button in Split admin dashboard. If a test is deleted from the Split dashboard, then it can only be started after pressing the `Start` button whenever being re-initialized.
### Reset after completion
When a user completes a test their session is reset so that they may start the test again in the future.
To stop this behaviour you can pass the following option to the `ab_finished` method:
```ruby
ab_finished(:experiment_name, reset: false)
```
The user will then always see the alternative they started with.
Any old unfinished experiment key will be deleted from the user's data storage if the experiment had been removed or is over and a winner had been chosen. This allows a user to enroll into any new experiment in cases when the `allow_multiple_experiments` config option is set to `false`.
### Reset experiments manually
By default Split automatically resets the experiment whenever it detects the configuration for an experiment has changed (e.g. you call `ab_test` with different alternatives). You can prevent this by setting the option `reset_manually` to `true`.
You may want to do this when you want to change something, like the variants' names, the metadata about an experiment, etc. without resetting everything.
### Multiple experiments at once
By default Split will avoid users participating in multiple experiments at once. This means you are less likely to skew results by adding in more variation to your tests.
To stop this behaviour and allow users to participate in multiple experiments at once set the `allow_multiple_experiments` config option to true like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = true
end
```
This will allow the user to participate in any number of experiments and belong to any alternative in each experiment. This has the possible downside of a variation in one experiment influencing the outcome of another.
To address this, setting the `allow_multiple_experiments` config option to 'control' like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = 'control'
end
```
For this to work, each and every experiment you define must have an alternative named 'control'. This will allow the user to participate in multiple experiments as long as the user belongs to the alternative 'control' in each experiment. As soon as the user belongs to an alternative named something other than 'control' the user may not participate in any more experiments. Calling ab_test(<other experiments>) will always return the first alternative without adding the user to that experiment.
### Experiment Persistence
Split comes with three built-in persistence adapters for storing users and the alternatives they've been given for each experiment.
By default Split will store the tests for each user in the session.
You can optionally configure Split to use a cookie, Redis, or any custom adapter of your choosing.
#### Cookies
```ruby
Split.configure do |config|
config.persistence = :cookie
end
```
When using the cookie persistence, Split stores data into an anonymous tracking cookie named 'split', which expires in 1 year. To change that, set the `persistence_cookie_length` in the configuration (unit of time in seconds).
```ruby
Split.configure do |config|
config.persistence = :cookie
config.persistence_cookie_length = 2592000 # 30 days
end
```
The data stored consists of the experiment name and the variants the user is in. Example: { "experiment_name" => "variant_a" }
__Note:__ Using cookies depends on `ActionDispatch::Cookies` or any identical API
#### Redis
Using Redis will allow ab_users to persist across sessions or machines.
```ruby
Split.configure do |config|
config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: -> (context) { context.current_user_id })
# Equivalent
# config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: :current_user_id)
end
```
Options:
* `lookup_by`: method to invoke per request for uniquely identifying ab_users (mandatory configuration)
* `namespace`: separate namespace to store these persisted values (default "persistence")
* `expire_seconds`: sets TTL for user key. (if a user is in multiple experiments most recent update will reset TTL for all their assignments)
#### Dual Adapter
The Dual Adapter allows the use of different persistence adapters for logged-in and logged-out users. A common use case is to use Redis for logged-in users and Cookies for logged-out users.
```ruby
cookie_adapter = Split::Persistence::CookieAdapter
redis_adapter = Split::Persistence::RedisAdapter.with_config(
lookup_by: -> (context) { context.send(:current_user).try(:id) },
expire_seconds: 2592000)
Split.configure do |config|
config.persistence = Split::Persistence::DualAdapter.with_config(
logged_in: -> (context) { !context.send(:current_user).try(:id).nil? },
logged_in_adapter: redis_adapter,
logged_out_adapter: cookie_adapter)
config.persistence_cookie_length = 2592000 # 30 days
end
```
#### Custom Adapter
Your custom adapter needs to implement the same API as existing adapters.
See `Split::Persistence::CookieAdapter` or `Split::Persistence::SessionAdapter` for a starting point.
```ruby
Split.configure do |config|
config.persistence = YourCustomAdapterClass
end
```
### Trial Event Hooks
You can define methods that will be called at the same time as experiment
alternative participation and goal completion.
For example:
``` ruby
Split.configure do |config|
config.on_trial = :log_trial # run on every trial
config.on_trial_choose = :log_trial_choose # run on trials with new users only
config.on_trial_complete = :log_trial_complete
end
```
Set these attributes to a method name available in the same context as the
`ab_test` method. These methods should accept one argument, a `Trial` instance.
``` ruby
def log_trial(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_choose(trial)
logger.info "[new user] experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_complete(trial)
logger.info "experiment=%s alternative=%s user=%s complete=true" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
#### Views
If you are running `ab_test` from a view, you must define your event
hook callback as a
[helper_method](https://apidock.com/rails/AbstractController/Helpers/ClassMethods/helper_method)
in the controller:
``` ruby
helper_method :log_trial_choose
def log_trial_choose(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
### Experiment Hooks
You can assign a proc that will be called when an experiment is reset or deleted. You can use these hooks to call methods within your application to keep data related to experiments in sync with Split.
For example:
``` ruby
Split.configure do |config|
# after experiment reset or deleted
config.on_experiment_reset = -> (example) { # Do something on reset }
config.on_experiment_delete = -> (experiment) { # Do something else on delete }
# before experiment reset or deleted
config.on_before_experiment_reset = -> (example) { # Do something on reset }
config.on_before_experiment_delete = -> (experiment) { # Do something else on delete }
# after experiment winner had been set
config.on_experiment_winner_choose = -> (experiment) { # Do something on winner choose }
end
```
## Web Interface
Split comes with a Sinatra-based front end to get an overview of how your experiments are doing.
If you are running Rails 2: You can mount this inside your app using Rack::URLMap in your `config.ru`
```ruby
require 'split/dashboard'
run Rack::URLMap.new \
"/" => Your::App.new,
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
```
Then adding this to config/routes.rb
```ruby
mount Split::Dashboard, at: 'split'
```
You may want to password protect that page, you can do so with `Rack::Auth::Basic` (in your split initializer file)
```ruby
# Rails apps or apps that already depend on activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
# Apps without activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
```
You can even use Devise or any other Warden-based authentication method to authorize users. Just replace `mount Split::Dashboard, :at => 'split'` in `config/routes.rb` with the following:
```ruby
match "/split" => Split::Dashboard, anchor: false, via: [:get, :post, :delete], constraints: -> (request) do
request.env['warden'].authenticated? # are we authenticated?
request.env['warden'].authenticate! # authenticate if not already
# or even check any other condition such as request.env['warden'].user.is_admin?
end
```
More information on this [here](https://steve.dynedge.co.uk/2011/12/09/controlling-access-to-routes-and-rack-apps-in-rails-3-with-devise-and-warden/)
### Screenshot
## Configuration
You can override the default configuration options of Split like so:
```ruby
Split.configure do |config|
config.db_failover = true # handle Redis errors gracefully
config.db_failover_on_db_error = -> (error) { Rails.logger.error(error.message) }
config.allow_multiple_experiments = true
config.enabled = true
config.persistence = Split::Persistence::SessionAdapter
#config.start_manually = false ## new test will have to be started manually from the admin panel. default false
#config.reset_manually = false ## if true, it never resets the experiment data, even if the configuration changes
config.include_rails_helper = true
config.redis = "redis://custom.redis.url:6380"
end
```
Split looks for the Redis host in the environment variable `REDIS_URL` then
defaults to `redis://localhost:6379` if not specified by configure block.
On platforms like Heroku, Split will use the value of `REDIS_PROVIDER` to
determine which env variable key to use when retrieving the host config. This
defaults to `REDIS_URL`.
### Filtering
In most scenarios you don't want to have AB-Testing enabled for web spiders, robots or special groups of users.
Split provides functionality to filter this based on a predefined, extensible list of bots, IP-lists or custom exclude logic.
```ruby
Split.configure do |config|
# bot config
config.robot_regex = /my_custom_robot_regex/ # or
config.bots['newbot'] = "Description for bot with 'newbot' user agent, which will be added to config.robot_regex for exclusion"
# IP config
config.ignore_ip_addresses << '81.19.48.130' # or regex: /81\.19\.48\.[0-9]+/
# or provide your own filter functionality, the default is proc{ |request| is_robot? || is_ignored_ip_address? || is_preview? }
config.ignore_filter = -> (request) { CustomExcludeLogic.excludes?(request) }
end
```
### Experiment configuration
Instead of providing the experiment options inline, you can store them
in a hash. This hash can control your experiment's alternatives, weights,
algorithm and if the experiment resets once finished:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
resettable: false
},
:my_second_experiment => {
algorithm: 'Split::Algorithms::Whiplash',
alternatives: [
{ name: "a", percent: 67 },
{ name: "b", percent: 33 }
]
}
}
end
```
You can also store your experiments in a YAML file:
```ruby
Split.configure do |config|
config.experiments = YAML.load_file "config/experiments.yml"
end
```
You can then define the YAML file like:
```yaml
my_first_experiment:
alternatives:
- a
- b
my_second_experiment:
alternatives:
- name: a
percent: 67
- name: b
percent: 33
resettable: false
```
This simplifies the calls from your code:
```ruby
ab_test(:my_first_experiment)
```
and:
```ruby
ab_finished(:my_first_experiment)
```
You can also add meta data for each experiment, which is very useful when you need more than an alternative name to change behaviour:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metadata: {
"a" => {"text" => "Have a fantastic day"},
"b" => {"text" => "Don't get hit by a bus"}
}
}
}
end
```
```yaml
my_first_experiment:
alternatives:
- a
- b
metadata:
a:
text: "Have a fantastic day"
b:
text: "Don't get hit by a bus"
```
This allows for some advanced experiment configuration using methods like:
```ruby
trial.alternative.name # => "a"
trial.metadata['text'] # => "Have a fantastic day"
```
or in views:
```erb
<% ab_test("my_first_experiment") do |alternative, meta| %>
<%= alternative %>
<small><%= meta['text'] %></small>
<% end %>
```
The keys used in meta data should be Strings
#### Metrics
You might wish to track generic metrics, such as conversions, and use
those to complete multiple different experiments without adding more to
your code. You can use the configuration hash to do this, thanks to
the `:metric` option.
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metric: :my_metric
}
}
end
```
Your code may then track a completion using the metric instead of
the experiment name:
```ruby
ab_finished(:my_metric)
```
You can also create a new metric by instantiating and saving a new Metric object.
```ruby
Split::Metric.new(:my_metric)
Split::Metric.save
```
#### Goals
You might wish to allow an experiment to have multiple, distinguishable goals.
The API to define goals for an experiment is this:
```ruby
ab_test({link_color: ["purchase", "refund"]}, "red", "blue")
```
or you can define them in a configuration file:
```ruby
Split.configure do |config|
config.experiments = {
link_color: {
alternatives: ["red", "blue"],
goals: ["purchase", "refund"]
}
}
end
```
To complete a goal conversion, you do it like:
```ruby
ab_finished(link_color: "purchase")
```
Note that if you pass additional options, that should be a separate hash:
```ruby
ab_finished({ link_color: "purchase" }, reset: false)
```
**NOTE:** This does not mean that a single experiment can complete more than one goal.
Once you finish one of the goals, the test is considered to be completed, and finishing the other goal will no longer register. (Assuming the test runs with `reset: false`.)
**Good Example**: Test if listing Plan A first result in more conversions to Plan A (goal: "plana_conversion") or Plan B (goal: "planb_conversion").
**Bad Example**: Test if button color increases conversion rate through multiple steps of a funnel. THIS WILL NOT WORK.
**Bad Example**: Test both how button color affects signup *and* how it affects login, at the same time. THIS WILL NOT WORK.
#### Combined Experiments
If you want to test how button color affects signup *and* how it affects login at the same time, use combined experiments.
Configure like so:
```ruby
Split.configuration.experiments = {
:button_color_experiment => {
:alternatives => ["blue", "green"],
:combined_experiments => ["button_color_on_signup", "button_color_on_login"]
}
}
```
Starting the combined test starts all combined experiments
```ruby
ab_combined_test(:button_color_experiment)
```
Finish each combined test as normal
```ruby
ab_finished(:button_color_on_login)
ab_finished(:button_color_on_signup)
```
**Additional Configuration**:
* Be sure to enable `allow_multiple_experiments`
* In Sinatra include the CombinedExperimentsHelper
```
helpers Split::CombinedExperimentsHelper
```
### DB failover solution
Due to the fact that Redis has no automatic failover mechanism, it's
possible to switch on the `db_failover` config option, so that `ab_test`
and `ab_finished` will not crash in case of a db failure. `ab_test` always
delivers alternative A (the first one) in that case.
It's also possible to set a `db_failover_on_db_error` callback (proc)
for example to log these errors via Rails.logger.
### Redis
You may want to change the Redis host and port Split connects to, or
set various other options at startup.
Split has a `redis` setter which can be given a string or a Redis
object. This means if you're already using Redis in your app, Split
can re-use the existing connection.
String: `Split.redis = 'redis://localhost:6379'`
Redis: `Split.redis = $redis`
For our rails app we have a `config/initializers/split.rb` file where
we load `config/split.yml` by hand and set the Redis information
appropriately.
Here's our `config/split.yml`:
```yml
development: redis://localhost:6379
test: redis://localhost:6379
staging: redis://redis1.example.com:6379
fi: redis://localhost:6379
production: redis://redis1.example.com:6379
```
And our initializer:
```ruby
split_config = YAML.load_file(Rails.root.join('config', 'split.yml'))
Split.redis = split_config[Rails.env]
```
### Redis Caching (v4.0+)
In some high-volume usage scenarios, Redis load can be incurred by repeated
fetches for fairly static data. Enabling caching will reduce this load.
```ruby
Split.configuration.cache = true
````
This currently caches:
- `Split::ExperimentCatalog.find`
- `Split::Experiment.start_time`
- `Split::Experiment.winner`
## Namespaces
If you're running multiple, separate instances of Split you may want
to namespace the keyspaces so they do not overlap. This is not unlike
the approach taken by many memcached clients.
This feature can be provided by the [redis-namespace](https://github.com/defunkt/redis-namespace)
library. To configure Split to use `Redis::Namespace`, do the following:
1. Add `redis-namespace` to your Gemfile:
```ruby
gem 'redis-namespace'
```
2. Configure `Split.redis` to use a `Redis::Namespace` instance (possible in an
initializer):
```ruby
redis = Redis.new(url: ENV['REDIS_URL']) # or whatever config you want
Split.redis = Redis::Namespace.new(:your_namespace, redis: redis)
```
## Outside of a Web Session
Split provides the Helper module to facilitate running experiments inside web sessions.
Alternatively, you can access the underlying Metric, Trial, Experiment and Alternative objects to
conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
trial.choose!
# get the result, returns either red or blue
trial.alternative.name
# if the goal has been achieved, increment the successful completions for this alternative.
if goal_achieved?
trial.complete!
end
```
## Algorithms
By default, Split ships with `Split::Algorithms::WeightedSample` that randomly selects from possible alternatives for a traditional a/b test.
It is possible to specify static weights to favor certain alternatives.
`Split::Algorithms::Whiplash` is an implementation of a [multi-armed bandit algorithm](http://stevehanov.ca/blog/index.php?id=132).
This algorithm will automatically weight the alternatives based on their relative performance,
choosing the better-performing ones more often as trials are completed.
`Split::Algorithms::BlockRandomization` is an algorithm that ensures equal
participation across all alternatives. This algorithm will choose the alternative
with the fewest participants. In the event of multiple minimum participant alternatives
(i.e. starting a new "Block") the algorithm will choose a random alternative from
those minimum participant alternatives.
Users may also write their own algorithms. The default algorithm may be specified globally in the configuration file, or on a per experiment basis using the experiments hash of the configuration file.
To change the algorithm globally for all experiments, use the following in your initializer:
```ruby
Split.configure do |config|
config.algorithm = Split::Algorithms::Whiplash
end
```
## Extensions
- [Split::Export](https://github.com/splitrb/split-export) - Easily export A/B test data out of Split.
- [Split::Analytics](https://github.com/splitrb/split-analytics) - Push test data to Google Analytics.
- [Split::Mongoid](https://github.com/MongoHQ/split-mongoid) - Store experiment data in mongoid (still uses redis).
- [Split::Cacheable](https://github.com/harrystech/split_cacheable) - Automatically create cache buckets per test.
- [Split::Counters](https://github.com/bernardkroes/split-counters) - Add counters per experiment and alternative.
- [Split::Cli](https://github.com/craigmcnamara/split-cli) - A CLI to trigger Split A/B tests.
## Screencast
Ryan bates has produced an excellent 10 minute screencast about split on the Railscasts site: [A/B Testing with Split](http://railscasts.com/episodes/331-a-b-testing-with-split)
## Blogposts
* [Recipe: A/B testing with KISSMetrics and the split gem](https://robots.thoughtbot.com/post/9595887299/recipe-a-b-testing-with-kissmetrics-and-the-split-gem)
* [Rails A/B testing with Split on Heroku](http://blog.nathanhumbert.com/2012/02/rails-ab-testing-with-split-on-heroku.html)
## Backers
Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/split#backer)]
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## Sponsors
Become a sponsor and get your logo on our README on Github with a link to your site. [[Become a sponsor](https://opencollective.com/split#sponsor)]
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## Contribute
Please do! Over 70 different people have contributed to the project, you can see them all here: https://github.com/splitrb/split/graphs/contributors.
### Development
The source code is hosted at [GitHub](https://github.com/splitrb/split).
Report issues and feature requests on [GitHub Issues](https://github.com/splitrb/split/issues).
You can find a discussion form on [Google Groups](https://groups.google.com/d/forum/split-ruby).
### Tests
Run the tests like this:
# Start a Redis server in another tab.
redis-server
bundle
rake spec
### A Note on Patches and Pull Requests
* Fork the project.
* Make your feature addition or bug fix.
* Add tests for it. This is important so I don't break it in a
future version unintentionally.
* Add documentation if necessary.
* Commit. Do not mess with the rakefile, version, or history.
(If you want to have your own version, that is fine. But bump the version in a commit by itself, which I can ignore when I pull.)
* Send a pull request. Bonus points for topic branches.
### Code of Conduct
Please note that this project is released with a [Contributor Code of Conduct](CODE_OF_CONDUCT.md). By participating in this project you agree to abide by its terms.
## Copyright
[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
<MSG> Removed broken gemnasium badge
<DFF> @@ -8,7 +8,6 @@ Split is designed to be hacker friendly, allowing for maximum customisation and
[](http://badge.fury.io/rb/split)
[](http://travis-ci.org/splitrb/split)
-[](https://gemnasium.com/splitrb/split)
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[](https://coveralls.io/r/splitrb/split)
| 0 | Removed broken gemnasium badge | 1 | .md | md | mit | splitrb/split |
10070919 | <NME> README.md
<BEF> # [Split](https://libraries.io/rubygems/split)
[](http://badge.fury.io/rb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://codeclimate.com/github/splitrb/split/coverage)
[](https://github.com/RichardLitt/standard-readme)
[](http://badge.fury.io/rb/split)
[](http://travis-ci.org/splitrb/split)
[](https://gemnasium.com/splitrb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://coveralls.io/r/splitrb/split)
Split is heavily inspired by the [Abingo](https://github.com/ryanb/abingo) and [Vanity](https://github.com/assaf/vanity) Rails A/B testing plugins and [Resque](https://github.com/resque/resque) in its use of Redis.
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
## Install
### Requirements
Split v4.0+ is currently tested with Ruby >= 2.5 and Rails >= 5.2.
If your project requires compatibility with Ruby 2.4.x or older Rails versions. You can try v3.0 or v0.8.0(for Ruby 1.9.3)
Split uses Redis as a datastore.
Split only supports Redis 4.0 or greater.
If you're on OS X, Homebrew is the simplest way to install Redis:
```bash
brew install redis
redis-server /usr/local/etc/redis.conf
```
You now have a Redis daemon running on port `6379`.
### Setup
```bash
gem install split
```
#### Rails
Adding `gem 'split'` to your Gemfile will autoload it when rails starts up, as long as you've configured Redis it will 'just work'.
#### Sinatra
To configure Sinatra with Split you need to enable sessions and mix in the helper methods. Add the following lines at the top of your Sinatra app:
```ruby
require 'split'
class MySinatraApp < Sinatra::Base
enable :sessions
helpers Split::Helper
get '/' do
...
end
```
## Usage
To begin your A/B test use the `ab_test` method, naming your experiment with the first argument and then the different alternatives which you wish to test on as the other arguments.
`ab_test` returns one of the alternatives, if a user has already seen that test they will get the same alternative as before, which you can use to split your code on.
It can be used to render different templates, show different text or any other case based logic.
`ab_finished` is used to make a completion of an experiment, or conversion.
Example: View
```erb
<% ab_test(:login_button, "/images/button1.jpg", "/images/button2.jpg") do |button_file| %>
<%= image_tag(button_file, alt: "Login!") %>
<% end %>
```
Example: Controller
```ruby
def register_new_user
# See what level of free points maximizes users' decision to buy replacement points.
@starter_points = ab_test(:new_user_free_points, '100', '200', '300')
end
```
Example: Conversion tracking (in a controller!)
```ruby
def buy_new_points
# some business logic
ab_finished(:new_user_free_points)
end
```
Example: Conversion tracking (in a view)
```erb
Thanks for signing up, dude! <% ab_finished(:signup_page_redesign) %>
```
You can find more examples, tutorials and guides on the [wiki](https://github.com/splitrb/split/wiki).
## Statistical Validity
Split has two options for you to use to determine which alternative is the best.
The first option (default on the dashboard) uses a z test (n>30) for the difference between your control and alternative conversion rates to calculate statistical significance. This test will tell you whether an alternative is better or worse than your control, but it will not distinguish between which alternative is the best in an experiment with multiple alternatives. Split will only tell you if your experiment is 90%, 95%, or 99% significant, and this test only works if you have more than 30 participants and 5 conversions for each branch.
As per this [blog post](https://www.evanmiller.org/how-not-to-run-an-ab-test.html) on the pitfalls of A/B testing, it is highly recommended that you determine your requisite sample size for each branch before running the experiment. Otherwise, you'll have an increased rate of false positives (experiments which show a significant effect where really there is none).
[Here](https://www.evanmiller.org/ab-testing/sample-size.html) is a sample size calculator for your convenience.
The second option uses simulations from a beta distribution to determine the probability that the given alternative is the winner compared to all other alternatives. You can view these probabilities by clicking on the drop-down menu labeled "Confidence." This option should be used when the experiment has more than just 1 control and 1 alternative. It can also be used for a simple, 2-alternative A/B test.
Calculating the beta-distribution simulations for a large number of experiments can be slow, so the results are cached. You can specify how often they should be recalculated (the default is once per day).
```ruby
Split.configure do |config|
config.winning_alternative_recalculation_interval = 3600 # 1 hour
end
```
## Extras
### Weighted alternatives
Perhaps you only want to show an alternative to 10% of your visitors because it is very experimental or not yet fully load tested.
To do this you can pass a weight with each alternative in the following ways:
```ruby
ab_test(:homepage_design, {'Old' => 18}, {'New' => 2})
ab_test(:homepage_design, 'Old', {'New' => 1.0/9})
ab_test(:homepage_design, {'Old' => 9}, 'New')
```
This will only show the new alternative to visitors 1 in 10 times, the default weight for an alternative is 1.
### Overriding alternatives
For development and testing, you may wish to force your app to always return an alternative.
You can do this by passing it as a parameter in the url.
If you have an experiment called `button_color` with alternatives called `red` and `blue` used on your homepage, a url such as:
http://myawesomesite.com?ab_test[button_color]=red
will always have red buttons. This won't be stored in your session or count towards to results, unless you set the `store_override` configuration option.
In the event you want to disable all tests without having to know the individual experiment names, add a `SPLIT_DISABLE` query parameter.
http://myawesomesite.com?SPLIT_DISABLE=true
It is not required to send `SPLIT_DISABLE=false` to activate Split.
### Rspec Helper
To aid testing with RSpec, write `spec/support/split_helper.rb` and call `use_ab_test(alternatives_by_experiment)` in your specs as instructed below:
```ruby
# Create a file with these contents at 'spec/support/split_helper.rb'
# and ensure it is `require`d in your rails_helper.rb or spec_helper.rb
module SplitHelper
# Force a specific experiment alternative to always be returned:
# use_ab_test(signup_form: "single_page")
#
# Force alternatives for multiple experiments:
# use_ab_test(signup_form: "single_page", pricing: "show_enterprise_prices")
#
def use_ab_test(alternatives_by_experiment)
allow_any_instance_of(Split::Helper).to receive(:ab_test) do |_receiver, experiment, &block|
variant = alternatives_by_experiment.fetch(experiment) { |key| raise "Unknown experiment '#{key}'" }
block.call(variant) unless block.nil?
variant
end
end
end
# Make the `use_ab_test` method available to all specs:
RSpec.configure do |config|
config.include SplitHelper
end
```
Now you can call `use_ab_test(alternatives_by_experiment)` in your specs, for example:
```ruby
it "registers using experimental signup" do
use_ab_test experiment_name: "alternative_name"
post "/signups"
...
end
```
### Starting experiments manually
By default new A/B tests will be active right after deployment. In case you would like to start new test a while after
the deploy, you can do it by setting the `start_manually` configuration option to `true`.
After choosing this option tests won't be started right after deploy, but after pressing the `Start` button in Split admin dashboard. If a test is deleted from the Split dashboard, then it can only be started after pressing the `Start` button whenever being re-initialized.
### Reset after completion
When a user completes a test their session is reset so that they may start the test again in the future.
To stop this behaviour you can pass the following option to the `ab_finished` method:
```ruby
ab_finished(:experiment_name, reset: false)
```
The user will then always see the alternative they started with.
Any old unfinished experiment key will be deleted from the user's data storage if the experiment had been removed or is over and a winner had been chosen. This allows a user to enroll into any new experiment in cases when the `allow_multiple_experiments` config option is set to `false`.
### Reset experiments manually
By default Split automatically resets the experiment whenever it detects the configuration for an experiment has changed (e.g. you call `ab_test` with different alternatives). You can prevent this by setting the option `reset_manually` to `true`.
You may want to do this when you want to change something, like the variants' names, the metadata about an experiment, etc. without resetting everything.
### Multiple experiments at once
By default Split will avoid users participating in multiple experiments at once. This means you are less likely to skew results by adding in more variation to your tests.
To stop this behaviour and allow users to participate in multiple experiments at once set the `allow_multiple_experiments` config option to true like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = true
end
```
This will allow the user to participate in any number of experiments and belong to any alternative in each experiment. This has the possible downside of a variation in one experiment influencing the outcome of another.
To address this, setting the `allow_multiple_experiments` config option to 'control' like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = 'control'
end
```
For this to work, each and every experiment you define must have an alternative named 'control'. This will allow the user to participate in multiple experiments as long as the user belongs to the alternative 'control' in each experiment. As soon as the user belongs to an alternative named something other than 'control' the user may not participate in any more experiments. Calling ab_test(<other experiments>) will always return the first alternative without adding the user to that experiment.
### Experiment Persistence
Split comes with three built-in persistence adapters for storing users and the alternatives they've been given for each experiment.
By default Split will store the tests for each user in the session.
You can optionally configure Split to use a cookie, Redis, or any custom adapter of your choosing.
#### Cookies
```ruby
Split.configure do |config|
config.persistence = :cookie
end
```
When using the cookie persistence, Split stores data into an anonymous tracking cookie named 'split', which expires in 1 year. To change that, set the `persistence_cookie_length` in the configuration (unit of time in seconds).
```ruby
Split.configure do |config|
config.persistence = :cookie
config.persistence_cookie_length = 2592000 # 30 days
end
```
The data stored consists of the experiment name and the variants the user is in. Example: { "experiment_name" => "variant_a" }
__Note:__ Using cookies depends on `ActionDispatch::Cookies` or any identical API
#### Redis
Using Redis will allow ab_users to persist across sessions or machines.
```ruby
Split.configure do |config|
config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: -> (context) { context.current_user_id })
# Equivalent
# config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: :current_user_id)
end
```
Options:
* `lookup_by`: method to invoke per request for uniquely identifying ab_users (mandatory configuration)
* `namespace`: separate namespace to store these persisted values (default "persistence")
* `expire_seconds`: sets TTL for user key. (if a user is in multiple experiments most recent update will reset TTL for all their assignments)
#### Dual Adapter
The Dual Adapter allows the use of different persistence adapters for logged-in and logged-out users. A common use case is to use Redis for logged-in users and Cookies for logged-out users.
```ruby
cookie_adapter = Split::Persistence::CookieAdapter
redis_adapter = Split::Persistence::RedisAdapter.with_config(
lookup_by: -> (context) { context.send(:current_user).try(:id) },
expire_seconds: 2592000)
Split.configure do |config|
config.persistence = Split::Persistence::DualAdapter.with_config(
logged_in: -> (context) { !context.send(:current_user).try(:id).nil? },
logged_in_adapter: redis_adapter,
logged_out_adapter: cookie_adapter)
config.persistence_cookie_length = 2592000 # 30 days
end
```
#### Custom Adapter
Your custom adapter needs to implement the same API as existing adapters.
See `Split::Persistence::CookieAdapter` or `Split::Persistence::SessionAdapter` for a starting point.
```ruby
Split.configure do |config|
config.persistence = YourCustomAdapterClass
end
```
### Trial Event Hooks
You can define methods that will be called at the same time as experiment
alternative participation and goal completion.
For example:
``` ruby
Split.configure do |config|
config.on_trial = :log_trial # run on every trial
config.on_trial_choose = :log_trial_choose # run on trials with new users only
config.on_trial_complete = :log_trial_complete
end
```
Set these attributes to a method name available in the same context as the
`ab_test` method. These methods should accept one argument, a `Trial` instance.
``` ruby
def log_trial(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_choose(trial)
logger.info "[new user] experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_complete(trial)
logger.info "experiment=%s alternative=%s user=%s complete=true" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
#### Views
If you are running `ab_test` from a view, you must define your event
hook callback as a
[helper_method](https://apidock.com/rails/AbstractController/Helpers/ClassMethods/helper_method)
in the controller:
``` ruby
helper_method :log_trial_choose
def log_trial_choose(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
### Experiment Hooks
You can assign a proc that will be called when an experiment is reset or deleted. You can use these hooks to call methods within your application to keep data related to experiments in sync with Split.
For example:
``` ruby
Split.configure do |config|
# after experiment reset or deleted
config.on_experiment_reset = -> (example) { # Do something on reset }
config.on_experiment_delete = -> (experiment) { # Do something else on delete }
# before experiment reset or deleted
config.on_before_experiment_reset = -> (example) { # Do something on reset }
config.on_before_experiment_delete = -> (experiment) { # Do something else on delete }
# after experiment winner had been set
config.on_experiment_winner_choose = -> (experiment) { # Do something on winner choose }
end
```
## Web Interface
Split comes with a Sinatra-based front end to get an overview of how your experiments are doing.
If you are running Rails 2: You can mount this inside your app using Rack::URLMap in your `config.ru`
```ruby
require 'split/dashboard'
run Rack::URLMap.new \
"/" => Your::App.new,
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
```
Then adding this to config/routes.rb
```ruby
mount Split::Dashboard, at: 'split'
```
You may want to password protect that page, you can do so with `Rack::Auth::Basic` (in your split initializer file)
```ruby
# Rails apps or apps that already depend on activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
# Apps without activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
```
You can even use Devise or any other Warden-based authentication method to authorize users. Just replace `mount Split::Dashboard, :at => 'split'` in `config/routes.rb` with the following:
```ruby
match "/split" => Split::Dashboard, anchor: false, via: [:get, :post, :delete], constraints: -> (request) do
request.env['warden'].authenticated? # are we authenticated?
request.env['warden'].authenticate! # authenticate if not already
# or even check any other condition such as request.env['warden'].user.is_admin?
end
```
More information on this [here](https://steve.dynedge.co.uk/2011/12/09/controlling-access-to-routes-and-rack-apps-in-rails-3-with-devise-and-warden/)
### Screenshot
## Configuration
You can override the default configuration options of Split like so:
```ruby
Split.configure do |config|
config.db_failover = true # handle Redis errors gracefully
config.db_failover_on_db_error = -> (error) { Rails.logger.error(error.message) }
config.allow_multiple_experiments = true
config.enabled = true
config.persistence = Split::Persistence::SessionAdapter
#config.start_manually = false ## new test will have to be started manually from the admin panel. default false
#config.reset_manually = false ## if true, it never resets the experiment data, even if the configuration changes
config.include_rails_helper = true
config.redis = "redis://custom.redis.url:6380"
end
```
Split looks for the Redis host in the environment variable `REDIS_URL` then
defaults to `redis://localhost:6379` if not specified by configure block.
On platforms like Heroku, Split will use the value of `REDIS_PROVIDER` to
determine which env variable key to use when retrieving the host config. This
defaults to `REDIS_URL`.
### Filtering
In most scenarios you don't want to have AB-Testing enabled for web spiders, robots or special groups of users.
Split provides functionality to filter this based on a predefined, extensible list of bots, IP-lists or custom exclude logic.
```ruby
Split.configure do |config|
# bot config
config.robot_regex = /my_custom_robot_regex/ # or
config.bots['newbot'] = "Description for bot with 'newbot' user agent, which will be added to config.robot_regex for exclusion"
# IP config
config.ignore_ip_addresses << '81.19.48.130' # or regex: /81\.19\.48\.[0-9]+/
# or provide your own filter functionality, the default is proc{ |request| is_robot? || is_ignored_ip_address? || is_preview? }
config.ignore_filter = -> (request) { CustomExcludeLogic.excludes?(request) }
end
```
### Experiment configuration
Instead of providing the experiment options inline, you can store them
in a hash. This hash can control your experiment's alternatives, weights,
algorithm and if the experiment resets once finished:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
resettable: false
},
:my_second_experiment => {
algorithm: 'Split::Algorithms::Whiplash',
alternatives: [
{ name: "a", percent: 67 },
{ name: "b", percent: 33 }
]
}
}
end
```
You can also store your experiments in a YAML file:
```ruby
Split.configure do |config|
config.experiments = YAML.load_file "config/experiments.yml"
end
```
You can then define the YAML file like:
```yaml
my_first_experiment:
alternatives:
- a
- b
my_second_experiment:
alternatives:
- name: a
percent: 67
- name: b
percent: 33
resettable: false
```
This simplifies the calls from your code:
```ruby
ab_test(:my_first_experiment)
```
and:
```ruby
ab_finished(:my_first_experiment)
```
You can also add meta data for each experiment, which is very useful when you need more than an alternative name to change behaviour:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metadata: {
"a" => {"text" => "Have a fantastic day"},
"b" => {"text" => "Don't get hit by a bus"}
}
}
}
end
```
```yaml
my_first_experiment:
alternatives:
- a
- b
metadata:
a:
text: "Have a fantastic day"
b:
text: "Don't get hit by a bus"
```
This allows for some advanced experiment configuration using methods like:
```ruby
trial.alternative.name # => "a"
trial.metadata['text'] # => "Have a fantastic day"
```
or in views:
```erb
<% ab_test("my_first_experiment") do |alternative, meta| %>
<%= alternative %>
<small><%= meta['text'] %></small>
<% end %>
```
The keys used in meta data should be Strings
#### Metrics
You might wish to track generic metrics, such as conversions, and use
those to complete multiple different experiments without adding more to
your code. You can use the configuration hash to do this, thanks to
the `:metric` option.
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metric: :my_metric
}
}
end
```
Your code may then track a completion using the metric instead of
the experiment name:
```ruby
ab_finished(:my_metric)
```
You can also create a new metric by instantiating and saving a new Metric object.
```ruby
Split::Metric.new(:my_metric)
Split::Metric.save
```
#### Goals
You might wish to allow an experiment to have multiple, distinguishable goals.
The API to define goals for an experiment is this:
```ruby
ab_test({link_color: ["purchase", "refund"]}, "red", "blue")
```
or you can define them in a configuration file:
```ruby
Split.configure do |config|
config.experiments = {
link_color: {
alternatives: ["red", "blue"],
goals: ["purchase", "refund"]
}
}
end
```
To complete a goal conversion, you do it like:
```ruby
ab_finished(link_color: "purchase")
```
Note that if you pass additional options, that should be a separate hash:
```ruby
ab_finished({ link_color: "purchase" }, reset: false)
```
**NOTE:** This does not mean that a single experiment can complete more than one goal.
Once you finish one of the goals, the test is considered to be completed, and finishing the other goal will no longer register. (Assuming the test runs with `reset: false`.)
**Good Example**: Test if listing Plan A first result in more conversions to Plan A (goal: "plana_conversion") or Plan B (goal: "planb_conversion").
**Bad Example**: Test if button color increases conversion rate through multiple steps of a funnel. THIS WILL NOT WORK.
**Bad Example**: Test both how button color affects signup *and* how it affects login, at the same time. THIS WILL NOT WORK.
#### Combined Experiments
If you want to test how button color affects signup *and* how it affects login at the same time, use combined experiments.
Configure like so:
```ruby
Split.configuration.experiments = {
:button_color_experiment => {
:alternatives => ["blue", "green"],
:combined_experiments => ["button_color_on_signup", "button_color_on_login"]
}
}
```
Starting the combined test starts all combined experiments
```ruby
ab_combined_test(:button_color_experiment)
```
Finish each combined test as normal
```ruby
ab_finished(:button_color_on_login)
ab_finished(:button_color_on_signup)
```
**Additional Configuration**:
* Be sure to enable `allow_multiple_experiments`
* In Sinatra include the CombinedExperimentsHelper
```
helpers Split::CombinedExperimentsHelper
```
### DB failover solution
Due to the fact that Redis has no automatic failover mechanism, it's
possible to switch on the `db_failover` config option, so that `ab_test`
and `ab_finished` will not crash in case of a db failure. `ab_test` always
delivers alternative A (the first one) in that case.
It's also possible to set a `db_failover_on_db_error` callback (proc)
for example to log these errors via Rails.logger.
### Redis
You may want to change the Redis host and port Split connects to, or
set various other options at startup.
Split has a `redis` setter which can be given a string or a Redis
object. This means if you're already using Redis in your app, Split
can re-use the existing connection.
String: `Split.redis = 'redis://localhost:6379'`
Redis: `Split.redis = $redis`
For our rails app we have a `config/initializers/split.rb` file where
we load `config/split.yml` by hand and set the Redis information
appropriately.
Here's our `config/split.yml`:
```yml
development: redis://localhost:6379
test: redis://localhost:6379
staging: redis://redis1.example.com:6379
fi: redis://localhost:6379
production: redis://redis1.example.com:6379
```
And our initializer:
```ruby
split_config = YAML.load_file(Rails.root.join('config', 'split.yml'))
Split.redis = split_config[Rails.env]
```
### Redis Caching (v4.0+)
In some high-volume usage scenarios, Redis load can be incurred by repeated
fetches for fairly static data. Enabling caching will reduce this load.
```ruby
Split.configuration.cache = true
````
This currently caches:
- `Split::ExperimentCatalog.find`
- `Split::Experiment.start_time`
- `Split::Experiment.winner`
## Namespaces
If you're running multiple, separate instances of Split you may want
to namespace the keyspaces so they do not overlap. This is not unlike
the approach taken by many memcached clients.
This feature can be provided by the [redis-namespace](https://github.com/defunkt/redis-namespace)
library. To configure Split to use `Redis::Namespace`, do the following:
1. Add `redis-namespace` to your Gemfile:
```ruby
gem 'redis-namespace'
```
2. Configure `Split.redis` to use a `Redis::Namespace` instance (possible in an
initializer):
```ruby
redis = Redis.new(url: ENV['REDIS_URL']) # or whatever config you want
Split.redis = Redis::Namespace.new(:your_namespace, redis: redis)
```
## Outside of a Web Session
Split provides the Helper module to facilitate running experiments inside web sessions.
Alternatively, you can access the underlying Metric, Trial, Experiment and Alternative objects to
conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
trial.choose!
# get the result, returns either red or blue
trial.alternative.name
# if the goal has been achieved, increment the successful completions for this alternative.
if goal_achieved?
trial.complete!
end
```
## Algorithms
By default, Split ships with `Split::Algorithms::WeightedSample` that randomly selects from possible alternatives for a traditional a/b test.
It is possible to specify static weights to favor certain alternatives.
`Split::Algorithms::Whiplash` is an implementation of a [multi-armed bandit algorithm](http://stevehanov.ca/blog/index.php?id=132).
This algorithm will automatically weight the alternatives based on their relative performance,
choosing the better-performing ones more often as trials are completed.
`Split::Algorithms::BlockRandomization` is an algorithm that ensures equal
participation across all alternatives. This algorithm will choose the alternative
with the fewest participants. In the event of multiple minimum participant alternatives
(i.e. starting a new "Block") the algorithm will choose a random alternative from
those minimum participant alternatives.
Users may also write their own algorithms. The default algorithm may be specified globally in the configuration file, or on a per experiment basis using the experiments hash of the configuration file.
To change the algorithm globally for all experiments, use the following in your initializer:
```ruby
Split.configure do |config|
config.algorithm = Split::Algorithms::Whiplash
end
```
## Extensions
- [Split::Export](https://github.com/splitrb/split-export) - Easily export A/B test data out of Split.
- [Split::Analytics](https://github.com/splitrb/split-analytics) - Push test data to Google Analytics.
- [Split::Mongoid](https://github.com/MongoHQ/split-mongoid) - Store experiment data in mongoid (still uses redis).
- [Split::Cacheable](https://github.com/harrystech/split_cacheable) - Automatically create cache buckets per test.
- [Split::Counters](https://github.com/bernardkroes/split-counters) - Add counters per experiment and alternative.
- [Split::Cli](https://github.com/craigmcnamara/split-cli) - A CLI to trigger Split A/B tests.
## Screencast
Ryan bates has produced an excellent 10 minute screencast about split on the Railscasts site: [A/B Testing with Split](http://railscasts.com/episodes/331-a-b-testing-with-split)
## Blogposts
* [Recipe: A/B testing with KISSMetrics and the split gem](https://robots.thoughtbot.com/post/9595887299/recipe-a-b-testing-with-kissmetrics-and-the-split-gem)
* [Rails A/B testing with Split on Heroku](http://blog.nathanhumbert.com/2012/02/rails-ab-testing-with-split-on-heroku.html)
## Backers
Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/split#backer)]
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## Sponsors
Become a sponsor and get your logo on our README on Github with a link to your site. [[Become a sponsor](https://opencollective.com/split#sponsor)]
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## Contribute
Please do! Over 70 different people have contributed to the project, you can see them all here: https://github.com/splitrb/split/graphs/contributors.
### Development
The source code is hosted at [GitHub](https://github.com/splitrb/split).
Report issues and feature requests on [GitHub Issues](https://github.com/splitrb/split/issues).
You can find a discussion form on [Google Groups](https://groups.google.com/d/forum/split-ruby).
### Tests
Run the tests like this:
# Start a Redis server in another tab.
redis-server
bundle
rake spec
### A Note on Patches and Pull Requests
* Fork the project.
* Make your feature addition or bug fix.
* Add tests for it. This is important so I don't break it in a
future version unintentionally.
* Add documentation if necessary.
* Commit. Do not mess with the rakefile, version, or history.
(If you want to have your own version, that is fine. But bump the version in a commit by itself, which I can ignore when I pull.)
* Send a pull request. Bonus points for topic branches.
### Code of Conduct
Please note that this project is released with a [Contributor Code of Conduct](CODE_OF_CONDUCT.md). By participating in this project you agree to abide by its terms.
## Copyright
[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
<MSG> Removed broken gemnasium badge
<DFF> @@ -8,7 +8,6 @@ Split is designed to be hacker friendly, allowing for maximum customisation and
[](http://badge.fury.io/rb/split)
[](http://travis-ci.org/splitrb/split)
-[](https://gemnasium.com/splitrb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://coveralls.io/r/splitrb/split)
| 0 | Removed broken gemnasium badge | 1 | .md | md | mit | splitrb/split |
10070920 | <NME> README.md
<BEF> # [Split](https://libraries.io/rubygems/split)
[](http://badge.fury.io/rb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://codeclimate.com/github/splitrb/split/coverage)
[](https://github.com/RichardLitt/standard-readme)
[](http://badge.fury.io/rb/split)
[](http://travis-ci.org/splitrb/split)
[](https://gemnasium.com/splitrb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://coveralls.io/r/splitrb/split)
Split is heavily inspired by the [Abingo](https://github.com/ryanb/abingo) and [Vanity](https://github.com/assaf/vanity) Rails A/B testing plugins and [Resque](https://github.com/resque/resque) in its use of Redis.
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
## Install
### Requirements
Split v4.0+ is currently tested with Ruby >= 2.5 and Rails >= 5.2.
If your project requires compatibility with Ruby 2.4.x or older Rails versions. You can try v3.0 or v0.8.0(for Ruby 1.9.3)
Split uses Redis as a datastore.
Split only supports Redis 4.0 or greater.
If you're on OS X, Homebrew is the simplest way to install Redis:
```bash
brew install redis
redis-server /usr/local/etc/redis.conf
```
You now have a Redis daemon running on port `6379`.
### Setup
```bash
gem install split
```
#### Rails
Adding `gem 'split'` to your Gemfile will autoload it when rails starts up, as long as you've configured Redis it will 'just work'.
#### Sinatra
To configure Sinatra with Split you need to enable sessions and mix in the helper methods. Add the following lines at the top of your Sinatra app:
```ruby
require 'split'
class MySinatraApp < Sinatra::Base
enable :sessions
helpers Split::Helper
get '/' do
...
end
```
## Usage
To begin your A/B test use the `ab_test` method, naming your experiment with the first argument and then the different alternatives which you wish to test on as the other arguments.
`ab_test` returns one of the alternatives, if a user has already seen that test they will get the same alternative as before, which you can use to split your code on.
It can be used to render different templates, show different text or any other case based logic.
`ab_finished` is used to make a completion of an experiment, or conversion.
Example: View
```erb
<% ab_test(:login_button, "/images/button1.jpg", "/images/button2.jpg") do |button_file| %>
<%= image_tag(button_file, alt: "Login!") %>
<% end %>
```
Example: Controller
```ruby
def register_new_user
# See what level of free points maximizes users' decision to buy replacement points.
@starter_points = ab_test(:new_user_free_points, '100', '200', '300')
end
```
Example: Conversion tracking (in a controller!)
```ruby
def buy_new_points
# some business logic
ab_finished(:new_user_free_points)
end
```
Example: Conversion tracking (in a view)
```erb
Thanks for signing up, dude! <% ab_finished(:signup_page_redesign) %>
```
You can find more examples, tutorials and guides on the [wiki](https://github.com/splitrb/split/wiki).
## Statistical Validity
Split has two options for you to use to determine which alternative is the best.
The first option (default on the dashboard) uses a z test (n>30) for the difference between your control and alternative conversion rates to calculate statistical significance. This test will tell you whether an alternative is better or worse than your control, but it will not distinguish between which alternative is the best in an experiment with multiple alternatives. Split will only tell you if your experiment is 90%, 95%, or 99% significant, and this test only works if you have more than 30 participants and 5 conversions for each branch.
As per this [blog post](https://www.evanmiller.org/how-not-to-run-an-ab-test.html) on the pitfalls of A/B testing, it is highly recommended that you determine your requisite sample size for each branch before running the experiment. Otherwise, you'll have an increased rate of false positives (experiments which show a significant effect where really there is none).
[Here](https://www.evanmiller.org/ab-testing/sample-size.html) is a sample size calculator for your convenience.
The second option uses simulations from a beta distribution to determine the probability that the given alternative is the winner compared to all other alternatives. You can view these probabilities by clicking on the drop-down menu labeled "Confidence." This option should be used when the experiment has more than just 1 control and 1 alternative. It can also be used for a simple, 2-alternative A/B test.
Calculating the beta-distribution simulations for a large number of experiments can be slow, so the results are cached. You can specify how often they should be recalculated (the default is once per day).
```ruby
Split.configure do |config|
config.winning_alternative_recalculation_interval = 3600 # 1 hour
end
```
## Extras
### Weighted alternatives
Perhaps you only want to show an alternative to 10% of your visitors because it is very experimental or not yet fully load tested.
To do this you can pass a weight with each alternative in the following ways:
```ruby
ab_test(:homepage_design, {'Old' => 18}, {'New' => 2})
ab_test(:homepage_design, 'Old', {'New' => 1.0/9})
ab_test(:homepage_design, {'Old' => 9}, 'New')
```
This will only show the new alternative to visitors 1 in 10 times, the default weight for an alternative is 1.
### Overriding alternatives
For development and testing, you may wish to force your app to always return an alternative.
You can do this by passing it as a parameter in the url.
If you have an experiment called `button_color` with alternatives called `red` and `blue` used on your homepage, a url such as:
http://myawesomesite.com?ab_test[button_color]=red
will always have red buttons. This won't be stored in your session or count towards to results, unless you set the `store_override` configuration option.
In the event you want to disable all tests without having to know the individual experiment names, add a `SPLIT_DISABLE` query parameter.
http://myawesomesite.com?SPLIT_DISABLE=true
It is not required to send `SPLIT_DISABLE=false` to activate Split.
### Rspec Helper
To aid testing with RSpec, write `spec/support/split_helper.rb` and call `use_ab_test(alternatives_by_experiment)` in your specs as instructed below:
```ruby
# Create a file with these contents at 'spec/support/split_helper.rb'
# and ensure it is `require`d in your rails_helper.rb or spec_helper.rb
module SplitHelper
# Force a specific experiment alternative to always be returned:
# use_ab_test(signup_form: "single_page")
#
# Force alternatives for multiple experiments:
# use_ab_test(signup_form: "single_page", pricing: "show_enterprise_prices")
#
def use_ab_test(alternatives_by_experiment)
allow_any_instance_of(Split::Helper).to receive(:ab_test) do |_receiver, experiment, &block|
variant = alternatives_by_experiment.fetch(experiment) { |key| raise "Unknown experiment '#{key}'" }
block.call(variant) unless block.nil?
variant
end
end
end
# Make the `use_ab_test` method available to all specs:
RSpec.configure do |config|
config.include SplitHelper
end
```
Now you can call `use_ab_test(alternatives_by_experiment)` in your specs, for example:
```ruby
it "registers using experimental signup" do
use_ab_test experiment_name: "alternative_name"
post "/signups"
...
end
```
### Starting experiments manually
By default new A/B tests will be active right after deployment. In case you would like to start new test a while after
the deploy, you can do it by setting the `start_manually` configuration option to `true`.
After choosing this option tests won't be started right after deploy, but after pressing the `Start` button in Split admin dashboard. If a test is deleted from the Split dashboard, then it can only be started after pressing the `Start` button whenever being re-initialized.
### Reset after completion
When a user completes a test their session is reset so that they may start the test again in the future.
To stop this behaviour you can pass the following option to the `ab_finished` method:
```ruby
ab_finished(:experiment_name, reset: false)
```
The user will then always see the alternative they started with.
Any old unfinished experiment key will be deleted from the user's data storage if the experiment had been removed or is over and a winner had been chosen. This allows a user to enroll into any new experiment in cases when the `allow_multiple_experiments` config option is set to `false`.
### Reset experiments manually
By default Split automatically resets the experiment whenever it detects the configuration for an experiment has changed (e.g. you call `ab_test` with different alternatives). You can prevent this by setting the option `reset_manually` to `true`.
You may want to do this when you want to change something, like the variants' names, the metadata about an experiment, etc. without resetting everything.
### Multiple experiments at once
By default Split will avoid users participating in multiple experiments at once. This means you are less likely to skew results by adding in more variation to your tests.
To stop this behaviour and allow users to participate in multiple experiments at once set the `allow_multiple_experiments` config option to true like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = true
end
```
This will allow the user to participate in any number of experiments and belong to any alternative in each experiment. This has the possible downside of a variation in one experiment influencing the outcome of another.
To address this, setting the `allow_multiple_experiments` config option to 'control' like so:
```ruby
Split.configure do |config|
config.allow_multiple_experiments = 'control'
end
```
For this to work, each and every experiment you define must have an alternative named 'control'. This will allow the user to participate in multiple experiments as long as the user belongs to the alternative 'control' in each experiment. As soon as the user belongs to an alternative named something other than 'control' the user may not participate in any more experiments. Calling ab_test(<other experiments>) will always return the first alternative without adding the user to that experiment.
### Experiment Persistence
Split comes with three built-in persistence adapters for storing users and the alternatives they've been given for each experiment.
By default Split will store the tests for each user in the session.
You can optionally configure Split to use a cookie, Redis, or any custom adapter of your choosing.
#### Cookies
```ruby
Split.configure do |config|
config.persistence = :cookie
end
```
When using the cookie persistence, Split stores data into an anonymous tracking cookie named 'split', which expires in 1 year. To change that, set the `persistence_cookie_length` in the configuration (unit of time in seconds).
```ruby
Split.configure do |config|
config.persistence = :cookie
config.persistence_cookie_length = 2592000 # 30 days
end
```
The data stored consists of the experiment name and the variants the user is in. Example: { "experiment_name" => "variant_a" }
__Note:__ Using cookies depends on `ActionDispatch::Cookies` or any identical API
#### Redis
Using Redis will allow ab_users to persist across sessions or machines.
```ruby
Split.configure do |config|
config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: -> (context) { context.current_user_id })
# Equivalent
# config.persistence = Split::Persistence::RedisAdapter.with_config(lookup_by: :current_user_id)
end
```
Options:
* `lookup_by`: method to invoke per request for uniquely identifying ab_users (mandatory configuration)
* `namespace`: separate namespace to store these persisted values (default "persistence")
* `expire_seconds`: sets TTL for user key. (if a user is in multiple experiments most recent update will reset TTL for all their assignments)
#### Dual Adapter
The Dual Adapter allows the use of different persistence adapters for logged-in and logged-out users. A common use case is to use Redis for logged-in users and Cookies for logged-out users.
```ruby
cookie_adapter = Split::Persistence::CookieAdapter
redis_adapter = Split::Persistence::RedisAdapter.with_config(
lookup_by: -> (context) { context.send(:current_user).try(:id) },
expire_seconds: 2592000)
Split.configure do |config|
config.persistence = Split::Persistence::DualAdapter.with_config(
logged_in: -> (context) { !context.send(:current_user).try(:id).nil? },
logged_in_adapter: redis_adapter,
logged_out_adapter: cookie_adapter)
config.persistence_cookie_length = 2592000 # 30 days
end
```
#### Custom Adapter
Your custom adapter needs to implement the same API as existing adapters.
See `Split::Persistence::CookieAdapter` or `Split::Persistence::SessionAdapter` for a starting point.
```ruby
Split.configure do |config|
config.persistence = YourCustomAdapterClass
end
```
### Trial Event Hooks
You can define methods that will be called at the same time as experiment
alternative participation and goal completion.
For example:
``` ruby
Split.configure do |config|
config.on_trial = :log_trial # run on every trial
config.on_trial_choose = :log_trial_choose # run on trials with new users only
config.on_trial_complete = :log_trial_complete
end
```
Set these attributes to a method name available in the same context as the
`ab_test` method. These methods should accept one argument, a `Trial` instance.
``` ruby
def log_trial(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_choose(trial)
logger.info "[new user] experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
def log_trial_complete(trial)
logger.info "experiment=%s alternative=%s user=%s complete=true" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
#### Views
If you are running `ab_test` from a view, you must define your event
hook callback as a
[helper_method](https://apidock.com/rails/AbstractController/Helpers/ClassMethods/helper_method)
in the controller:
``` ruby
helper_method :log_trial_choose
def log_trial_choose(trial)
logger.info "experiment=%s alternative=%s user=%s" %
[ trial.experiment.name, trial.alternative, current_user.id ]
end
```
### Experiment Hooks
You can assign a proc that will be called when an experiment is reset or deleted. You can use these hooks to call methods within your application to keep data related to experiments in sync with Split.
For example:
``` ruby
Split.configure do |config|
# after experiment reset or deleted
config.on_experiment_reset = -> (example) { # Do something on reset }
config.on_experiment_delete = -> (experiment) { # Do something else on delete }
# before experiment reset or deleted
config.on_before_experiment_reset = -> (example) { # Do something on reset }
config.on_before_experiment_delete = -> (experiment) { # Do something else on delete }
# after experiment winner had been set
config.on_experiment_winner_choose = -> (experiment) { # Do something on winner choose }
end
```
## Web Interface
Split comes with a Sinatra-based front end to get an overview of how your experiments are doing.
If you are running Rails 2: You can mount this inside your app using Rack::URLMap in your `config.ru`
```ruby
require 'split/dashboard'
run Rack::URLMap.new \
"/" => Your::App.new,
"/split" => Split::Dashboard.new
```
However, if you are using Rails 3 or higher: You can mount this inside your app routes by first adding this to the Gemfile:
```ruby
gem 'split', require: 'split/dashboard'
```
Then adding this to config/routes.rb
```ruby
mount Split::Dashboard, at: 'split'
```
You may want to password protect that page, you can do so with `Rack::Auth::Basic` (in your split initializer file)
```ruby
# Rails apps or apps that already depend on activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
ActiveSupport::SecurityUtils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
# Apps without activesupport
Split::Dashboard.use Rack::Auth::Basic do |username, password|
# Protect against timing attacks:
# - Use & (do not use &&) so that it doesn't short circuit.
# - Use digests to stop length information leaking
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(username), ::Digest::SHA256.hexdigest(ENV["SPLIT_USERNAME"])) &
Rack::Utils.secure_compare(::Digest::SHA256.hexdigest(password), ::Digest::SHA256.hexdigest(ENV["SPLIT_PASSWORD"]))
end
```
You can even use Devise or any other Warden-based authentication method to authorize users. Just replace `mount Split::Dashboard, :at => 'split'` in `config/routes.rb` with the following:
```ruby
match "/split" => Split::Dashboard, anchor: false, via: [:get, :post, :delete], constraints: -> (request) do
request.env['warden'].authenticated? # are we authenticated?
request.env['warden'].authenticate! # authenticate if not already
# or even check any other condition such as request.env['warden'].user.is_admin?
end
```
More information on this [here](https://steve.dynedge.co.uk/2011/12/09/controlling-access-to-routes-and-rack-apps-in-rails-3-with-devise-and-warden/)
### Screenshot
## Configuration
You can override the default configuration options of Split like so:
```ruby
Split.configure do |config|
config.db_failover = true # handle Redis errors gracefully
config.db_failover_on_db_error = -> (error) { Rails.logger.error(error.message) }
config.allow_multiple_experiments = true
config.enabled = true
config.persistence = Split::Persistence::SessionAdapter
#config.start_manually = false ## new test will have to be started manually from the admin panel. default false
#config.reset_manually = false ## if true, it never resets the experiment data, even if the configuration changes
config.include_rails_helper = true
config.redis = "redis://custom.redis.url:6380"
end
```
Split looks for the Redis host in the environment variable `REDIS_URL` then
defaults to `redis://localhost:6379` if not specified by configure block.
On platforms like Heroku, Split will use the value of `REDIS_PROVIDER` to
determine which env variable key to use when retrieving the host config. This
defaults to `REDIS_URL`.
### Filtering
In most scenarios you don't want to have AB-Testing enabled for web spiders, robots or special groups of users.
Split provides functionality to filter this based on a predefined, extensible list of bots, IP-lists or custom exclude logic.
```ruby
Split.configure do |config|
# bot config
config.robot_regex = /my_custom_robot_regex/ # or
config.bots['newbot'] = "Description for bot with 'newbot' user agent, which will be added to config.robot_regex for exclusion"
# IP config
config.ignore_ip_addresses << '81.19.48.130' # or regex: /81\.19\.48\.[0-9]+/
# or provide your own filter functionality, the default is proc{ |request| is_robot? || is_ignored_ip_address? || is_preview? }
config.ignore_filter = -> (request) { CustomExcludeLogic.excludes?(request) }
end
```
### Experiment configuration
Instead of providing the experiment options inline, you can store them
in a hash. This hash can control your experiment's alternatives, weights,
algorithm and if the experiment resets once finished:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
resettable: false
},
:my_second_experiment => {
algorithm: 'Split::Algorithms::Whiplash',
alternatives: [
{ name: "a", percent: 67 },
{ name: "b", percent: 33 }
]
}
}
end
```
You can also store your experiments in a YAML file:
```ruby
Split.configure do |config|
config.experiments = YAML.load_file "config/experiments.yml"
end
```
You can then define the YAML file like:
```yaml
my_first_experiment:
alternatives:
- a
- b
my_second_experiment:
alternatives:
- name: a
percent: 67
- name: b
percent: 33
resettable: false
```
This simplifies the calls from your code:
```ruby
ab_test(:my_first_experiment)
```
and:
```ruby
ab_finished(:my_first_experiment)
```
You can also add meta data for each experiment, which is very useful when you need more than an alternative name to change behaviour:
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metadata: {
"a" => {"text" => "Have a fantastic day"},
"b" => {"text" => "Don't get hit by a bus"}
}
}
}
end
```
```yaml
my_first_experiment:
alternatives:
- a
- b
metadata:
a:
text: "Have a fantastic day"
b:
text: "Don't get hit by a bus"
```
This allows for some advanced experiment configuration using methods like:
```ruby
trial.alternative.name # => "a"
trial.metadata['text'] # => "Have a fantastic day"
```
or in views:
```erb
<% ab_test("my_first_experiment") do |alternative, meta| %>
<%= alternative %>
<small><%= meta['text'] %></small>
<% end %>
```
The keys used in meta data should be Strings
#### Metrics
You might wish to track generic metrics, such as conversions, and use
those to complete multiple different experiments without adding more to
your code. You can use the configuration hash to do this, thanks to
the `:metric` option.
```ruby
Split.configure do |config|
config.experiments = {
my_first_experiment: {
alternatives: ["a", "b"],
metric: :my_metric
}
}
end
```
Your code may then track a completion using the metric instead of
the experiment name:
```ruby
ab_finished(:my_metric)
```
You can also create a new metric by instantiating and saving a new Metric object.
```ruby
Split::Metric.new(:my_metric)
Split::Metric.save
```
#### Goals
You might wish to allow an experiment to have multiple, distinguishable goals.
The API to define goals for an experiment is this:
```ruby
ab_test({link_color: ["purchase", "refund"]}, "red", "blue")
```
or you can define them in a configuration file:
```ruby
Split.configure do |config|
config.experiments = {
link_color: {
alternatives: ["red", "blue"],
goals: ["purchase", "refund"]
}
}
end
```
To complete a goal conversion, you do it like:
```ruby
ab_finished(link_color: "purchase")
```
Note that if you pass additional options, that should be a separate hash:
```ruby
ab_finished({ link_color: "purchase" }, reset: false)
```
**NOTE:** This does not mean that a single experiment can complete more than one goal.
Once you finish one of the goals, the test is considered to be completed, and finishing the other goal will no longer register. (Assuming the test runs with `reset: false`.)
**Good Example**: Test if listing Plan A first result in more conversions to Plan A (goal: "plana_conversion") or Plan B (goal: "planb_conversion").
**Bad Example**: Test if button color increases conversion rate through multiple steps of a funnel. THIS WILL NOT WORK.
**Bad Example**: Test both how button color affects signup *and* how it affects login, at the same time. THIS WILL NOT WORK.
#### Combined Experiments
If you want to test how button color affects signup *and* how it affects login at the same time, use combined experiments.
Configure like so:
```ruby
Split.configuration.experiments = {
:button_color_experiment => {
:alternatives => ["blue", "green"],
:combined_experiments => ["button_color_on_signup", "button_color_on_login"]
}
}
```
Starting the combined test starts all combined experiments
```ruby
ab_combined_test(:button_color_experiment)
```
Finish each combined test as normal
```ruby
ab_finished(:button_color_on_login)
ab_finished(:button_color_on_signup)
```
**Additional Configuration**:
* Be sure to enable `allow_multiple_experiments`
* In Sinatra include the CombinedExperimentsHelper
```
helpers Split::CombinedExperimentsHelper
```
### DB failover solution
Due to the fact that Redis has no automatic failover mechanism, it's
possible to switch on the `db_failover` config option, so that `ab_test`
and `ab_finished` will not crash in case of a db failure. `ab_test` always
delivers alternative A (the first one) in that case.
It's also possible to set a `db_failover_on_db_error` callback (proc)
for example to log these errors via Rails.logger.
### Redis
You may want to change the Redis host and port Split connects to, or
set various other options at startup.
Split has a `redis` setter which can be given a string or a Redis
object. This means if you're already using Redis in your app, Split
can re-use the existing connection.
String: `Split.redis = 'redis://localhost:6379'`
Redis: `Split.redis = $redis`
For our rails app we have a `config/initializers/split.rb` file where
we load `config/split.yml` by hand and set the Redis information
appropriately.
Here's our `config/split.yml`:
```yml
development: redis://localhost:6379
test: redis://localhost:6379
staging: redis://redis1.example.com:6379
fi: redis://localhost:6379
production: redis://redis1.example.com:6379
```
And our initializer:
```ruby
split_config = YAML.load_file(Rails.root.join('config', 'split.yml'))
Split.redis = split_config[Rails.env]
```
### Redis Caching (v4.0+)
In some high-volume usage scenarios, Redis load can be incurred by repeated
fetches for fairly static data. Enabling caching will reduce this load.
```ruby
Split.configuration.cache = true
````
This currently caches:
- `Split::ExperimentCatalog.find`
- `Split::Experiment.start_time`
- `Split::Experiment.winner`
## Namespaces
If you're running multiple, separate instances of Split you may want
to namespace the keyspaces so they do not overlap. This is not unlike
the approach taken by many memcached clients.
This feature can be provided by the [redis-namespace](https://github.com/defunkt/redis-namespace)
library. To configure Split to use `Redis::Namespace`, do the following:
1. Add `redis-namespace` to your Gemfile:
```ruby
gem 'redis-namespace'
```
2. Configure `Split.redis` to use a `Redis::Namespace` instance (possible in an
initializer):
```ruby
redis = Redis.new(url: ENV['REDIS_URL']) # or whatever config you want
Split.redis = Redis::Namespace.new(:your_namespace, redis: redis)
```
## Outside of a Web Session
Split provides the Helper module to facilitate running experiments inside web sessions.
Alternatively, you can access the underlying Metric, Trial, Experiment and Alternative objects to
conduct experiments that are not tied to a web session.
```ruby
# create a new experiment
experiment = Split::ExperimentCatalog.find_or_create('color', 'red', 'blue')
# create a new trial
trial = Split::Trial.new(:experiment => experiment)
# run trial
trial.choose!
# get the result, returns either red or blue
trial.alternative.name
# if the goal has been achieved, increment the successful completions for this alternative.
if goal_achieved?
trial.complete!
end
```
## Algorithms
By default, Split ships with `Split::Algorithms::WeightedSample` that randomly selects from possible alternatives for a traditional a/b test.
It is possible to specify static weights to favor certain alternatives.
`Split::Algorithms::Whiplash` is an implementation of a [multi-armed bandit algorithm](http://stevehanov.ca/blog/index.php?id=132).
This algorithm will automatically weight the alternatives based on their relative performance,
choosing the better-performing ones more often as trials are completed.
`Split::Algorithms::BlockRandomization` is an algorithm that ensures equal
participation across all alternatives. This algorithm will choose the alternative
with the fewest participants. In the event of multiple minimum participant alternatives
(i.e. starting a new "Block") the algorithm will choose a random alternative from
those minimum participant alternatives.
Users may also write their own algorithms. The default algorithm may be specified globally in the configuration file, or on a per experiment basis using the experiments hash of the configuration file.
To change the algorithm globally for all experiments, use the following in your initializer:
```ruby
Split.configure do |config|
config.algorithm = Split::Algorithms::Whiplash
end
```
## Extensions
- [Split::Export](https://github.com/splitrb/split-export) - Easily export A/B test data out of Split.
- [Split::Analytics](https://github.com/splitrb/split-analytics) - Push test data to Google Analytics.
- [Split::Mongoid](https://github.com/MongoHQ/split-mongoid) - Store experiment data in mongoid (still uses redis).
- [Split::Cacheable](https://github.com/harrystech/split_cacheable) - Automatically create cache buckets per test.
- [Split::Counters](https://github.com/bernardkroes/split-counters) - Add counters per experiment and alternative.
- [Split::Cli](https://github.com/craigmcnamara/split-cli) - A CLI to trigger Split A/B tests.
## Screencast
Ryan bates has produced an excellent 10 minute screencast about split on the Railscasts site: [A/B Testing with Split](http://railscasts.com/episodes/331-a-b-testing-with-split)
## Blogposts
* [Recipe: A/B testing with KISSMetrics and the split gem](https://robots.thoughtbot.com/post/9595887299/recipe-a-b-testing-with-kissmetrics-and-the-split-gem)
* [Rails A/B testing with Split on Heroku](http://blog.nathanhumbert.com/2012/02/rails-ab-testing-with-split-on-heroku.html)
## Backers
Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/split#backer)]
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## Contribute
Please do! Over 70 different people have contributed to the project, you can see them all here: https://github.com/splitrb/split/graphs/contributors.
### Development
The source code is hosted at [GitHub](https://github.com/splitrb/split).
Report issues and feature requests on [GitHub Issues](https://github.com/splitrb/split/issues).
You can find a discussion form on [Google Groups](https://groups.google.com/d/forum/split-ruby).
### Tests
Run the tests like this:
# Start a Redis server in another tab.
redis-server
bundle
rake spec
### A Note on Patches and Pull Requests
* Fork the project.
* Make your feature addition or bug fix.
* Add tests for it. This is important so I don't break it in a
future version unintentionally.
* Add documentation if necessary.
* Commit. Do not mess with the rakefile, version, or history.
(If you want to have your own version, that is fine. But bump the version in a commit by itself, which I can ignore when I pull.)
* Send a pull request. Bonus points for topic branches.
### Code of Conduct
Please note that this project is released with a [Contributor Code of Conduct](CODE_OF_CONDUCT.md). By participating in this project you agree to abide by its terms.
## Copyright
[MIT License](LICENSE) © 2019 [Andrew Nesbitt](https://github.com/andrew).
<MSG> Removed broken gemnasium badge
<DFF> @@ -8,7 +8,6 @@ Split is designed to be hacker friendly, allowing for maximum customisation and
[](http://badge.fury.io/rb/split)
[](http://travis-ci.org/splitrb/split)
-[](https://gemnasium.com/splitrb/split)
[](https://codeclimate.com/github/splitrb/split)
[](https://coveralls.io/r/splitrb/split)
| 0 | Removed broken gemnasium badge | 1 | .md | md | mit | splitrb/split |
10070921 | <NME> configuration_spec.rb
<BEF> require 'spec_helper'
describe Split::Configuration do
it "should provide default values" do
config = Split::Configuration.new
config.ignore_ip_addresses.should eql([])
config.robot_regex.should eql(/\b(Baidu|Gigabot|Googlebot|libwww-perl|lwp-trivial|msnbot|SiteUptime|Slurp|WordPress|ZIBB|ZyBorg)\b/i)
config.db_failover.should be_false
config.db_failover_on_db_error.should be_a Proc
config.allow_multiple_experiments.should be_false
config.enabled.should be_true
end
end
it "should not allow multiple experiments by default" do
expect(@config.allow_multiple_experiments).to be_falsey
end
it "should be enabled by default" do
expect(@config.enabled).to be_truthy
end
it "disabled is the opposite of enabled" do
@config.enabled = false
expect(@config.disabled?).to be_truthy
end
it "should not store the overridden test group per default" do
expect(@config.store_override).to be_falsey
end
it "should provide a default pattern for robots" do
%w[Baidu Gigabot Googlebot libwww-perl lwp-trivial msnbot SiteUptime Slurp WordPress ZIBB ZyBorg YandexBot AdsBot-Google Wget curl bitlybot facebookexternalhit spider].each do |robot|
expect(@config.robot_regex).to match(robot)
end
expect(@config.robot_regex).to match("EventMachine HttpClient")
expect(@config.robot_regex).to match("libwww-perl/5.836")
expect(@config.robot_regex).to match("Pingdom.com_bot_version_1.4_(http://www.pingdom.com)")
expect(@config.robot_regex).to match(" - ")
end
it "should accept real UAs with the robot regexp" do
expect(@config.robot_regex).not_to match("Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.4) Gecko/20091017 SeaMonkey/2.0")
expect(@config.robot_regex).not_to match("Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; F-6.0SP2-20041109; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 1.1.4322; InfoPath.3)")
end
it "should allow adding a bot to the bot list" do
@config.bots["newbot"] = "An amazing test bot"
expect(@config.robot_regex).to match("newbot")
end
it "should use the session adapter for persistence by default" do
expect(@config.persistence).to eq(Split::Persistence::SessionAdapter)
end
it "should load a metric" do
@config.experiments = { my_experiment: { alternatives: ["control_opt", "other_opt"], metric: :my_metric } }
expect(@config.metrics).not_to be_nil
expect(@config.metrics.keys).to eq([:my_metric])
end
it "should allow loading of experiment using experment_for" do
@config.experiments = { my_experiment: { alternatives: ["control_opt", "other_opt"], metric: :my_metric } }
expect(@config.experiment_for(:my_experiment)).to eq({ alternatives: ["control_opt", ["other_opt"]] })
end
context "when experiments are defined via YAML" do
context "as strings" do
context "in a basic configuration" do
before do
experiments_yaml = <<-eos
my_experiment:
alternatives:
- Control Opt
- Alt One
- Alt Two
resettable: false
eos
@config.experiments = YAML.load(experiments_yaml)
end
it "should normalize experiments" do
expect(@config.normalized_experiments).to eq({ my_experiment: { resettable: false, alternatives: ["Control Opt", ["Alt One", "Alt Two"]] } })
end
end
context "in a configuration with metadata" do
before do
experiments_yaml = <<-eos
my_experiment:
alternatives:
- name: Control Opt
percent: 67
- name: Alt One
percent: 10
- name: Alt Two
percent: 23
metadata:
Control Opt:
text: 'Control Option'
Alt One:
text: 'Alternative One'
Alt Two:
text: 'Alternative Two'
resettable: false
eos
@config.experiments = YAML.load(experiments_yaml)
end
it "should have metadata on the experiment" do
meta = @config.normalized_experiments[:my_experiment][:metadata]
expect(meta).to_not be nil
expect(meta["Control Opt"]["text"]).to eq("Control Option")
end
end
context "in a complex configuration" do
before do
experiments_yaml = <<-eos
my_experiment:
alternatives:
- name: Control Opt
percent: 67
- name: Alt One
percent: 10
- name: Alt Two
percent: 23
resettable: false
metric: my_metric
another_experiment:
alternatives:
- a
- b
eos
@config.experiments = YAML.load(experiments_yaml)
end
it "should normalize experiments" do
expect(@config.normalized_experiments).to eq({ my_experiment: { resettable: false, alternatives: [{ "Control Opt"=>0.67 },
[{ "Alt One"=>0.1 }, { "Alt Two"=>0.23 }]] }, another_experiment: { alternatives: ["a", ["b"]] } })
end
it "should recognize metrics" do
expect(@config.metrics).not_to be_nil
expect(@config.metrics.keys).to eq([:my_metric])
end
end
end
context "as symbols" do
context "with valid YAML" do
before do
experiments_yaml = <<-eos
:my_experiment:
:alternatives:
- Control Opt
- Alt One
- Alt Two
:resettable: false
eos
@config.experiments = YAML.load(experiments_yaml)
end
it "should normalize experiments" do
expect(@config.normalized_experiments).to eq({ my_experiment: { resettable: false, alternatives: ["Control Opt", ["Alt One", "Alt Two"]] } })
end
end
context "with invalid YAML" do
let(:yaml) { YAML.load(input) }
context "with an empty string" do
let(:input) { "" }
it "should raise an error" do
expect { @config.experiments = yaml }.to raise_error(Split::InvalidExperimentsFormatError)
end
end
context "with just the YAML header" do
let(:input) { "---" }
it "should raise an error" do
expect { @config.experiments = yaml }.to raise_error(Split::InvalidExperimentsFormatError)
end
end
end
end
end
it "should normalize experiments" do
@config.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
],
}
}
expect(@config.normalized_experiments).to eq({ my_experiment: { alternatives: [{ "control_opt"=>0.67 }, [{ "second_opt"=>0.1 }, { "third_opt"=>0.23 }]] } })
end
context "redis configuration" do
it "should default to local redis server" do
old_redis_url = ENV["REDIS_URL"]
ENV.delete("REDIS_URL")
expect(Split::Configuration.new.redis).to eq("redis://localhost:6379")
ENV["REDIS_URL"] = old_redis_url
end
it "should allow for redis url to be configured" do
@config.redis = "custom_redis_url"
expect(@config.redis).to eq("custom_redis_url")
end
context "provided REDIS_URL environment variable" do
it "should use the ENV variable" do
old_redis_url = ENV["REDIS_URL"]
ENV["REDIS_URL"] = "env_redis_url"
expect(Split::Configuration.new.redis).to eq("env_redis_url")
ENV["REDIS_URL"] = old_redis_url
end
end
end
context "persistence cookie length" do
it "should default to 1 year" do
expect(@config.persistence_cookie_length).to eq(31536000)
end
it "should allow the persistence cookie length to be configured" do
@config.persistence_cookie_length = 2592000
expect(@config.persistence_cookie_length).to eq(2592000)
end
end
context "persistence cookie domain" do
it "should default to nil" do
expect(@config.persistence_cookie_domain).to eq(nil)
end
it "should allow the persistence cookie domain to be configured" do
@config.persistence_cookie_domain = ".acme.com"
expect(@config.persistence_cookie_domain).to eq(".acme.com")
end
end
end
<MSG> documented bots sequence and clarified regex
<DFF> @@ -1,14 +1,15 @@
require 'spec_helper'
describe Split::Configuration do
+
+ before(:each) { @config = Split::Configuration.new }
+
it "should provide default values" do
- config = Split::Configuration.new
-
- config.ignore_ip_addresses.should eql([])
- config.robot_regex.should eql(/\b(Baidu|Gigabot|Googlebot|libwww-perl|lwp-trivial|msnbot|SiteUptime|Slurp|WordPress|ZIBB|ZyBorg)\b/i)
- config.db_failover.should be_false
- config.db_failover_on_db_error.should be_a Proc
- config.allow_multiple_experiments.should be_false
- config.enabled.should be_true
+ @config.ignore_ip_addresses.should eql([])
+ @config.robot_regex.should eql(/\b(Baidu|Gigabot|Googlebot|libwww-perl|lwp-trivial|msnbot|SiteUptime|Slurp|WordPress|ZIBB|ZyBorg)\b/i)
+ @config.db_failover.should be_false
+ @config.db_failover_on_db_error.should be_a Proc
+ @config.allow_multiple_experiments.should be_false
+ @config.enabled.should be_true
end
end
| 9 | documented bots sequence and clarified regex | 8 | .rb | rb | mit | splitrb/split |
10070922 | <NME> configuration_spec.rb
<BEF> require 'spec_helper'
describe Split::Configuration do
it "should provide default values" do
config = Split::Configuration.new
config.ignore_ip_addresses.should eql([])
config.robot_regex.should eql(/\b(Baidu|Gigabot|Googlebot|libwww-perl|lwp-trivial|msnbot|SiteUptime|Slurp|WordPress|ZIBB|ZyBorg)\b/i)
config.db_failover.should be_false
config.db_failover_on_db_error.should be_a Proc
config.allow_multiple_experiments.should be_false
config.enabled.should be_true
end
end
it "should not allow multiple experiments by default" do
expect(@config.allow_multiple_experiments).to be_falsey
end
it "should be enabled by default" do
expect(@config.enabled).to be_truthy
end
it "disabled is the opposite of enabled" do
@config.enabled = false
expect(@config.disabled?).to be_truthy
end
it "should not store the overridden test group per default" do
expect(@config.store_override).to be_falsey
end
it "should provide a default pattern for robots" do
%w[Baidu Gigabot Googlebot libwww-perl lwp-trivial msnbot SiteUptime Slurp WordPress ZIBB ZyBorg YandexBot AdsBot-Google Wget curl bitlybot facebookexternalhit spider].each do |robot|
expect(@config.robot_regex).to match(robot)
end
expect(@config.robot_regex).to match("EventMachine HttpClient")
expect(@config.robot_regex).to match("libwww-perl/5.836")
expect(@config.robot_regex).to match("Pingdom.com_bot_version_1.4_(http://www.pingdom.com)")
expect(@config.robot_regex).to match(" - ")
end
it "should accept real UAs with the robot regexp" do
expect(@config.robot_regex).not_to match("Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.4) Gecko/20091017 SeaMonkey/2.0")
expect(@config.robot_regex).not_to match("Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; F-6.0SP2-20041109; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 1.1.4322; InfoPath.3)")
end
it "should allow adding a bot to the bot list" do
@config.bots["newbot"] = "An amazing test bot"
expect(@config.robot_regex).to match("newbot")
end
it "should use the session adapter for persistence by default" do
expect(@config.persistence).to eq(Split::Persistence::SessionAdapter)
end
it "should load a metric" do
@config.experiments = { my_experiment: { alternatives: ["control_opt", "other_opt"], metric: :my_metric } }
expect(@config.metrics).not_to be_nil
expect(@config.metrics.keys).to eq([:my_metric])
end
it "should allow loading of experiment using experment_for" do
@config.experiments = { my_experiment: { alternatives: ["control_opt", "other_opt"], metric: :my_metric } }
expect(@config.experiment_for(:my_experiment)).to eq({ alternatives: ["control_opt", ["other_opt"]] })
end
context "when experiments are defined via YAML" do
context "as strings" do
context "in a basic configuration" do
before do
experiments_yaml = <<-eos
my_experiment:
alternatives:
- Control Opt
- Alt One
- Alt Two
resettable: false
eos
@config.experiments = YAML.load(experiments_yaml)
end
it "should normalize experiments" do
expect(@config.normalized_experiments).to eq({ my_experiment: { resettable: false, alternatives: ["Control Opt", ["Alt One", "Alt Two"]] } })
end
end
context "in a configuration with metadata" do
before do
experiments_yaml = <<-eos
my_experiment:
alternatives:
- name: Control Opt
percent: 67
- name: Alt One
percent: 10
- name: Alt Two
percent: 23
metadata:
Control Opt:
text: 'Control Option'
Alt One:
text: 'Alternative One'
Alt Two:
text: 'Alternative Two'
resettable: false
eos
@config.experiments = YAML.load(experiments_yaml)
end
it "should have metadata on the experiment" do
meta = @config.normalized_experiments[:my_experiment][:metadata]
expect(meta).to_not be nil
expect(meta["Control Opt"]["text"]).to eq("Control Option")
end
end
context "in a complex configuration" do
before do
experiments_yaml = <<-eos
my_experiment:
alternatives:
- name: Control Opt
percent: 67
- name: Alt One
percent: 10
- name: Alt Two
percent: 23
resettable: false
metric: my_metric
another_experiment:
alternatives:
- a
- b
eos
@config.experiments = YAML.load(experiments_yaml)
end
it "should normalize experiments" do
expect(@config.normalized_experiments).to eq({ my_experiment: { resettable: false, alternatives: [{ "Control Opt"=>0.67 },
[{ "Alt One"=>0.1 }, { "Alt Two"=>0.23 }]] }, another_experiment: { alternatives: ["a", ["b"]] } })
end
it "should recognize metrics" do
expect(@config.metrics).not_to be_nil
expect(@config.metrics.keys).to eq([:my_metric])
end
end
end
context "as symbols" do
context "with valid YAML" do
before do
experiments_yaml = <<-eos
:my_experiment:
:alternatives:
- Control Opt
- Alt One
- Alt Two
:resettable: false
eos
@config.experiments = YAML.load(experiments_yaml)
end
it "should normalize experiments" do
expect(@config.normalized_experiments).to eq({ my_experiment: { resettable: false, alternatives: ["Control Opt", ["Alt One", "Alt Two"]] } })
end
end
context "with invalid YAML" do
let(:yaml) { YAML.load(input) }
context "with an empty string" do
let(:input) { "" }
it "should raise an error" do
expect { @config.experiments = yaml }.to raise_error(Split::InvalidExperimentsFormatError)
end
end
context "with just the YAML header" do
let(:input) { "---" }
it "should raise an error" do
expect { @config.experiments = yaml }.to raise_error(Split::InvalidExperimentsFormatError)
end
end
end
end
end
it "should normalize experiments" do
@config.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
],
}
}
expect(@config.normalized_experiments).to eq({ my_experiment: { alternatives: [{ "control_opt"=>0.67 }, [{ "second_opt"=>0.1 }, { "third_opt"=>0.23 }]] } })
end
context "redis configuration" do
it "should default to local redis server" do
old_redis_url = ENV["REDIS_URL"]
ENV.delete("REDIS_URL")
expect(Split::Configuration.new.redis).to eq("redis://localhost:6379")
ENV["REDIS_URL"] = old_redis_url
end
it "should allow for redis url to be configured" do
@config.redis = "custom_redis_url"
expect(@config.redis).to eq("custom_redis_url")
end
context "provided REDIS_URL environment variable" do
it "should use the ENV variable" do
old_redis_url = ENV["REDIS_URL"]
ENV["REDIS_URL"] = "env_redis_url"
expect(Split::Configuration.new.redis).to eq("env_redis_url")
ENV["REDIS_URL"] = old_redis_url
end
end
end
context "persistence cookie length" do
it "should default to 1 year" do
expect(@config.persistence_cookie_length).to eq(31536000)
end
it "should allow the persistence cookie length to be configured" do
@config.persistence_cookie_length = 2592000
expect(@config.persistence_cookie_length).to eq(2592000)
end
end
context "persistence cookie domain" do
it "should default to nil" do
expect(@config.persistence_cookie_domain).to eq(nil)
end
it "should allow the persistence cookie domain to be configured" do
@config.persistence_cookie_domain = ".acme.com"
expect(@config.persistence_cookie_domain).to eq(".acme.com")
end
end
end
<MSG> documented bots sequence and clarified regex
<DFF> @@ -1,14 +1,15 @@
require 'spec_helper'
describe Split::Configuration do
+
+ before(:each) { @config = Split::Configuration.new }
+
it "should provide default values" do
- config = Split::Configuration.new
-
- config.ignore_ip_addresses.should eql([])
- config.robot_regex.should eql(/\b(Baidu|Gigabot|Googlebot|libwww-perl|lwp-trivial|msnbot|SiteUptime|Slurp|WordPress|ZIBB|ZyBorg)\b/i)
- config.db_failover.should be_false
- config.db_failover_on_db_error.should be_a Proc
- config.allow_multiple_experiments.should be_false
- config.enabled.should be_true
+ @config.ignore_ip_addresses.should eql([])
+ @config.robot_regex.should eql(/\b(Baidu|Gigabot|Googlebot|libwww-perl|lwp-trivial|msnbot|SiteUptime|Slurp|WordPress|ZIBB|ZyBorg)\b/i)
+ @config.db_failover.should be_false
+ @config.db_failover_on_db_error.should be_a Proc
+ @config.allow_multiple_experiments.should be_false
+ @config.enabled.should be_true
end
end
| 9 | documented bots sequence and clarified regex | 8 | .rb | rb | mit | splitrb/split |
10070923 | <NME> configuration_spec.rb
<BEF> require 'spec_helper'
describe Split::Configuration do
it "should provide default values" do
config = Split::Configuration.new
config.ignore_ip_addresses.should eql([])
config.robot_regex.should eql(/\b(Baidu|Gigabot|Googlebot|libwww-perl|lwp-trivial|msnbot|SiteUptime|Slurp|WordPress|ZIBB|ZyBorg)\b/i)
config.db_failover.should be_false
config.db_failover_on_db_error.should be_a Proc
config.allow_multiple_experiments.should be_false
config.enabled.should be_true
end
end
it "should not allow multiple experiments by default" do
expect(@config.allow_multiple_experiments).to be_falsey
end
it "should be enabled by default" do
expect(@config.enabled).to be_truthy
end
it "disabled is the opposite of enabled" do
@config.enabled = false
expect(@config.disabled?).to be_truthy
end
it "should not store the overridden test group per default" do
expect(@config.store_override).to be_falsey
end
it "should provide a default pattern for robots" do
%w[Baidu Gigabot Googlebot libwww-perl lwp-trivial msnbot SiteUptime Slurp WordPress ZIBB ZyBorg YandexBot AdsBot-Google Wget curl bitlybot facebookexternalhit spider].each do |robot|
expect(@config.robot_regex).to match(robot)
end
expect(@config.robot_regex).to match("EventMachine HttpClient")
expect(@config.robot_regex).to match("libwww-perl/5.836")
expect(@config.robot_regex).to match("Pingdom.com_bot_version_1.4_(http://www.pingdom.com)")
expect(@config.robot_regex).to match(" - ")
end
it "should accept real UAs with the robot regexp" do
expect(@config.robot_regex).not_to match("Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.4) Gecko/20091017 SeaMonkey/2.0")
expect(@config.robot_regex).not_to match("Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; F-6.0SP2-20041109; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 1.1.4322; InfoPath.3)")
end
it "should allow adding a bot to the bot list" do
@config.bots["newbot"] = "An amazing test bot"
expect(@config.robot_regex).to match("newbot")
end
it "should use the session adapter for persistence by default" do
expect(@config.persistence).to eq(Split::Persistence::SessionAdapter)
end
it "should load a metric" do
@config.experiments = { my_experiment: { alternatives: ["control_opt", "other_opt"], metric: :my_metric } }
expect(@config.metrics).not_to be_nil
expect(@config.metrics.keys).to eq([:my_metric])
end
it "should allow loading of experiment using experment_for" do
@config.experiments = { my_experiment: { alternatives: ["control_opt", "other_opt"], metric: :my_metric } }
expect(@config.experiment_for(:my_experiment)).to eq({ alternatives: ["control_opt", ["other_opt"]] })
end
context "when experiments are defined via YAML" do
context "as strings" do
context "in a basic configuration" do
before do
experiments_yaml = <<-eos
my_experiment:
alternatives:
- Control Opt
- Alt One
- Alt Two
resettable: false
eos
@config.experiments = YAML.load(experiments_yaml)
end
it "should normalize experiments" do
expect(@config.normalized_experiments).to eq({ my_experiment: { resettable: false, alternatives: ["Control Opt", ["Alt One", "Alt Two"]] } })
end
end
context "in a configuration with metadata" do
before do
experiments_yaml = <<-eos
my_experiment:
alternatives:
- name: Control Opt
percent: 67
- name: Alt One
percent: 10
- name: Alt Two
percent: 23
metadata:
Control Opt:
text: 'Control Option'
Alt One:
text: 'Alternative One'
Alt Two:
text: 'Alternative Two'
resettable: false
eos
@config.experiments = YAML.load(experiments_yaml)
end
it "should have metadata on the experiment" do
meta = @config.normalized_experiments[:my_experiment][:metadata]
expect(meta).to_not be nil
expect(meta["Control Opt"]["text"]).to eq("Control Option")
end
end
context "in a complex configuration" do
before do
experiments_yaml = <<-eos
my_experiment:
alternatives:
- name: Control Opt
percent: 67
- name: Alt One
percent: 10
- name: Alt Two
percent: 23
resettable: false
metric: my_metric
another_experiment:
alternatives:
- a
- b
eos
@config.experiments = YAML.load(experiments_yaml)
end
it "should normalize experiments" do
expect(@config.normalized_experiments).to eq({ my_experiment: { resettable: false, alternatives: [{ "Control Opt"=>0.67 },
[{ "Alt One"=>0.1 }, { "Alt Two"=>0.23 }]] }, another_experiment: { alternatives: ["a", ["b"]] } })
end
it "should recognize metrics" do
expect(@config.metrics).not_to be_nil
expect(@config.metrics.keys).to eq([:my_metric])
end
end
end
context "as symbols" do
context "with valid YAML" do
before do
experiments_yaml = <<-eos
:my_experiment:
:alternatives:
- Control Opt
- Alt One
- Alt Two
:resettable: false
eos
@config.experiments = YAML.load(experiments_yaml)
end
it "should normalize experiments" do
expect(@config.normalized_experiments).to eq({ my_experiment: { resettable: false, alternatives: ["Control Opt", ["Alt One", "Alt Two"]] } })
end
end
context "with invalid YAML" do
let(:yaml) { YAML.load(input) }
context "with an empty string" do
let(:input) { "" }
it "should raise an error" do
expect { @config.experiments = yaml }.to raise_error(Split::InvalidExperimentsFormatError)
end
end
context "with just the YAML header" do
let(:input) { "---" }
it "should raise an error" do
expect { @config.experiments = yaml }.to raise_error(Split::InvalidExperimentsFormatError)
end
end
end
end
end
it "should normalize experiments" do
@config.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
],
}
}
expect(@config.normalized_experiments).to eq({ my_experiment: { alternatives: [{ "control_opt"=>0.67 }, [{ "second_opt"=>0.1 }, { "third_opt"=>0.23 }]] } })
end
context "redis configuration" do
it "should default to local redis server" do
old_redis_url = ENV["REDIS_URL"]
ENV.delete("REDIS_URL")
expect(Split::Configuration.new.redis).to eq("redis://localhost:6379")
ENV["REDIS_URL"] = old_redis_url
end
it "should allow for redis url to be configured" do
@config.redis = "custom_redis_url"
expect(@config.redis).to eq("custom_redis_url")
end
context "provided REDIS_URL environment variable" do
it "should use the ENV variable" do
old_redis_url = ENV["REDIS_URL"]
ENV["REDIS_URL"] = "env_redis_url"
expect(Split::Configuration.new.redis).to eq("env_redis_url")
ENV["REDIS_URL"] = old_redis_url
end
end
end
context "persistence cookie length" do
it "should default to 1 year" do
expect(@config.persistence_cookie_length).to eq(31536000)
end
it "should allow the persistence cookie length to be configured" do
@config.persistence_cookie_length = 2592000
expect(@config.persistence_cookie_length).to eq(2592000)
end
end
context "persistence cookie domain" do
it "should default to nil" do
expect(@config.persistence_cookie_domain).to eq(nil)
end
it "should allow the persistence cookie domain to be configured" do
@config.persistence_cookie_domain = ".acme.com"
expect(@config.persistence_cookie_domain).to eq(".acme.com")
end
end
end
<MSG> documented bots sequence and clarified regex
<DFF> @@ -1,14 +1,15 @@
require 'spec_helper'
describe Split::Configuration do
+
+ before(:each) { @config = Split::Configuration.new }
+
it "should provide default values" do
- config = Split::Configuration.new
-
- config.ignore_ip_addresses.should eql([])
- config.robot_regex.should eql(/\b(Baidu|Gigabot|Googlebot|libwww-perl|lwp-trivial|msnbot|SiteUptime|Slurp|WordPress|ZIBB|ZyBorg)\b/i)
- config.db_failover.should be_false
- config.db_failover_on_db_error.should be_a Proc
- config.allow_multiple_experiments.should be_false
- config.enabled.should be_true
+ @config.ignore_ip_addresses.should eql([])
+ @config.robot_regex.should eql(/\b(Baidu|Gigabot|Googlebot|libwww-perl|lwp-trivial|msnbot|SiteUptime|Slurp|WordPress|ZIBB|ZyBorg)\b/i)
+ @config.db_failover.should be_false
+ @config.db_failover_on_db_error.should be_a Proc
+ @config.allow_multiple_experiments.should be_false
+ @config.enabled.should be_true
end
end
| 9 | documented bots sequence and clarified regex | 8 | .rb | rb | mit | splitrb/split |
10070924 | <NME> stylesheet.ts
<BEF> import { strictEqual as equal, ok } from 'assert';
import { stylesheet as expandAbbreviation, resolveConfig, CSSAbbreviationScope } from '../src';
import score from '../src/stylesheet/score';
const defaultConfig = resolveConfig({
type: 'stylesheet',
options: {
'output.field': (index, placeholder) => `\${${index}${placeholder ? ':' + placeholder : ''}}`,
'stylesheet.fuzzySearchMinScore': 0
},
snippets: {
mten: 'margin: 10px;',
fsz: 'font-size',
gt: 'grid-template: repeat(2,auto) / repeat(auto-fit, minmax(250px, 1fr))'
},
cache: {},
});
function expand(abbr: string, config = defaultConfig) {
return expandAbbreviation(abbr, config);
}
describe('Stylesheet abbreviations', () => {
describe('Scoring', () => {
const pick = (abbr: string, items: string[]) => items
.map(item => ({ item, score: score(abbr, item, true) }))
.filter(obj => obj.score)
.sort((a, b) => b.score - a.score)
.map(obj => obj.item)[0];
it('compare scores', () => {
equal(score('aaa', 'aaa'), 1);
equal(score('baa', 'aaa'), 0);
ok(!score('b', 'aaa'));
ok(score('a', 'aaa'));
ok(score('a', 'abc'));
ok(score('ac', 'abc'));
ok(score('a', 'aaa') < score('aa', 'aaa'));
ok(score('ab', 'abc') > score('ab', 'acb'));
// acronym bonus
ok(score('ab', 'a-b') > score('ab', 'acb'));
});
it('pick padding or position', () => {
const items = ['p', 'pb', 'pl', 'pos', 'pa', 'oa', 'soa', 'pr', 'pt'];
equal(pick('p', items), 'p');
equal(pick('poa', items), 'pos');
});
});
it('keywords', () => {
equal(expand('bd1-s'), 'border: 1px solid;');
equal(expand('dib'), 'display: inline-block;');
equal(expand('bxsz'), 'box-sizing: ${1:border-box};');
equal(expand('bxz'), 'box-sizing: ${1:border-box};');
equal(expand('bxzc'), 'box-sizing: content-box;');
equal(expand('fl'), 'float: ${1:left};');
equal(expand('fll'), 'float: left;');
equal(expand('pos'), 'position: ${1:relative};');
equal(expand('poa'), 'position: absolute;');
equal(expand('por'), 'position: relative;');
equal(expand('pof'), 'position: fixed;');
equal(expand('pos-a'), 'position: absolute;');
equal(expand('m'), 'margin: ${0};');
equal(expand('m0'), 'margin: 0;');
// use `auto` as global keyword
equal(expand('m0-a'), 'margin: 0 auto;');
equal(expand('m-a'), 'margin: auto;');
equal(expand('bg'), 'background: ${1:#000};');
equal(expand('bd'), 'border: ${1:1px} ${2:solid} ${3:#000};');
equal(expand('bd0-s#fc0'), 'border: 0 solid #fc0;');
equal(expand('bd0-dd#fc0'), 'border: 0 dot-dash #fc0;');
equal(expand('bd0-h#fc0'), 'border: 0 hidden #fc0;');
equal(expand('trf-trs'), 'transform: translate(${1:x}, ${2:y});');
equal(expand('p0'), 'padding: 0;', 'No unit for 0');
equal(expand('p10'), 'padding: 10px;', '`px` unit for integers');
equal(expand('p.4'), 'padding: 0.4em;', '`em` for floats');
equal(expand('p10p'), 'padding: 10%;', 'unit alias');
equal(expand('z10'), 'z-index: 10;', 'Unitless property');
equal(expand('p10r'), 'padding: 10rem;', 'unit alias');
equal(expand('lis:n'), 'list-style: none;');
equal(expand('list:n'), 'list-style-type: none;');
equal(expand('bdt:n'), 'border-top: none;');
equal(expand('bgi:n'), 'background-image: none;');
equal(expand('q:n'), 'quotes: none;');
});
it('numeric', () => {
equal(expand('p0'), 'padding: 0;', 'No unit for 0');
equal(expand('p10'), 'padding: 10px;', '`px` unit for integers');
equal(expand('p.4'), 'padding: 0.4em;', '`em` for floats');
equal(expand('fz10'), 'font-size: 10px;', '`px` for integers');
equal(expand('fz1.'), 'font-size: 1em;', '`em` for explicit float');
equal(expand('p10p'), 'padding: 10%;', 'unit alias');
equal(expand('z10'), 'z-index: 10;', 'Unitless property');
equal(expand('p10r'), 'padding: 10rem;', 'unit alias');
equal(expand('mten'), 'margin: 10px;', 'Ignore terminating `;` in snippet');
// https://github.com/microsoft/vscode/issues/59951
equal(expand('fz'), 'font-size: ${0};');
equal(expand('fz12'), 'font-size: 12px;');
equal(expand('fsz'), 'font-size: ${0};');
equal(expand('fsz12'), 'font-size: 12px;');
equal(expand('fs'), 'font-style: ${1:italic};');
// https://github.com/emmetio/emmet/issues/558
equal(expand('us'), 'user-select: none;');
// https://github.com/microsoft/vscode/issues/105697
equal(expand('opa1'), 'opacity: 1;', 'Unitless property');
equal(expand('opa.1'), 'opacity: 0.1;', 'Unitless property');
equal(expand('opa.a'), 'opacity: .a;', 'Unitless property');
});
it('numeric with format options', () => {
const config = resolveConfig({
type: 'stylesheet',
options: {
'stylesheet.intUnit': 'pt',
'stylesheet.floatUnit': 'vh',
'stylesheet.unitAliases': {
e: 'em',
p: '%',
x: 'ex',
r: ' / @rem'
}
}
});
equal(expand('p0', config), 'padding: 0;', 'No unit for 0');
equal(expand('p10', config), 'padding: 10pt;', '`pt` unit for integers');
equal(expand('p.4', config), 'padding: 0.4vh;', '`vh` for floats');
equal(expand('p10p', config), 'padding: 10%;', 'unit alias');
equal(expand('z10', config), 'z-index: 10;', 'Unitless property');
equal(expand('p10r', config), 'padding: 10 / @rem;', 'unit alias');
});
it('important', () => {
equal(expand('!'), '!important');
equal(expand('p!'), 'padding: ${0} !important;');
equal(expand('p0!'), 'padding: 0 !important;');
});
it('color', () => {
equal(expand('c'), 'color: ${1:#000};');
equal(expand('c#'), 'color: #000;');
equal(expand('c#f.5'), 'color: rgba(255, 255, 255, 0.5);');
equal(expand('c#f.5!'), 'color: rgba(255, 255, 255, 0.5) !important;');
equal(expand('bgc'), 'background-color: #${1:fff};');
});
it('snippets', () => {
equal(expand('@'), '@media ${1:screen} {\n\t${0}\n}');
// Insert value into snippet fields
equal(expand('@k-name'), '@keyframes name {\n\t${2}\n}');
equal(expand('@k-name10'), '@keyframes name {\n\t10\n}');
equal(expand('gt'), 'grid-template: repeat(2, auto) / repeat(auto-fit, minmax(250px, 1fr));');
});
it('multiple properties', () => {
equal(expand('p10+m10-20'), 'padding: 10px;\nmargin: 10px 20px;');
equal(expand('p+bd'), 'padding: ${0};\nborder: ${1:1px} ${2:solid} ${3:#000};');
});
it('functions', () => {
equal(expand('trf-s(2)'), 'transform: scale(2, ${2:y});');
equal(expand('trf-s(2, 3)'), 'transform: scale(2, 3);');
});
it('case insensitive matches', () => {
equal(expand('trf:rx'), 'transform: rotateX(${1:angle});');
});
it('gradient resolver', () => {
equal(expand('lg'), 'background-image: linear-gradient(${0});');
equal(expand('lg(to right, #0, #f00.5)'), 'background-image: linear-gradient(to right, #000, rgba(255, 0, 0, 0.5));');
});
it('unmatched abbreviation', () => {
// This example is useless: it’s unexpected to receive `align-self: unset`
// for `auto` snippet
// equal(expand('auto', resolveConfig({
// type: 'stylesheet',
// options: { 'stylesheet.fuzzySearchMinScore': 0 }
// })), 'align-self: unset;');
equal(expand('auto'), 'auto: ${0};');
});
it('CSS-in-JS', () => {
const config = resolveConfig({
type: 'stylesheet',
options: {
'stylesheet.json': true,
'stylesheet.between': ': '
}
});
equal(expand('p10+mt10-20', config), 'padding: 10,\nmarginTop: \'10px 20px\',');
equal(expand('bgc', config), 'backgroundColor: \'#fff\',');
});
it('resolve context value', () => {
const config = resolveConfig({
type: 'stylesheet',
context: { name: 'align-content' }
});
equal(expand('s', config), 'start');
equal(expand('a', config), 'auto');
});
it('limit snippets by scope', () => {
const sectionScope = resolveConfig({
type: 'stylesheet',
context: { name: CSSAbbreviationScope.Section },
snippets: {
mten: 'margin: 10px;',
fsz: 'font-size',
myCenterAwesome: 'body {\n\tdisplay: grid;\n}'
}
});
const propertyScope = resolveConfig({
type: 'stylesheet',
context: { name: CSSAbbreviationScope.Property },
snippets: {
mten: 'margin: 10px;',
fsz: 'font-size',
myCenterAwesome: 'body {\n\tdisplay: grid;\n}'
}
});
equal(expand('m', sectionScope), 'body {\n\tdisplay: grid;\n}');
equal(expand('b', sectionScope), '');
equal(expand('m', propertyScope), 'margin: ;');
});
});
<MSG> Handle explicit float values in stylesheet abbreviations
<DFF> @@ -85,6 +85,8 @@ describe('Stylesheet abbreviations', () => {
equal(expand('p0'), 'padding: 0;', 'No unit for 0');
equal(expand('p10'), 'padding: 10px;', '`px` unit for integers');
equal(expand('p.4'), 'padding: 0.4em;', '`em` for floats');
+ equal(expand('fz10'), 'font-size: 10px;', '`px` for integers');
+ equal(expand('fz1.'), 'font-size: 1em;', '`em` for explicit float');
equal(expand('p10p'), 'padding: 10%;', 'unit alias');
equal(expand('z10'), 'z-index: 10;', 'Unitless property');
equal(expand('p10r'), 'padding: 10rem;', 'unit alias');
| 2 | Handle explicit float values in stylesheet abbreviations | 0 | .ts | ts | mit | emmetio/emmet |
10070925 | <NME> stylesheet.ts
<BEF> import { strictEqual as equal, ok } from 'assert';
import { stylesheet as expandAbbreviation, resolveConfig, CSSAbbreviationScope } from '../src';
import score from '../src/stylesheet/score';
const defaultConfig = resolveConfig({
type: 'stylesheet',
options: {
'output.field': (index, placeholder) => `\${${index}${placeholder ? ':' + placeholder : ''}}`,
'stylesheet.fuzzySearchMinScore': 0
},
snippets: {
mten: 'margin: 10px;',
fsz: 'font-size',
gt: 'grid-template: repeat(2,auto) / repeat(auto-fit, minmax(250px, 1fr))'
},
cache: {},
});
function expand(abbr: string, config = defaultConfig) {
return expandAbbreviation(abbr, config);
}
describe('Stylesheet abbreviations', () => {
describe('Scoring', () => {
const pick = (abbr: string, items: string[]) => items
.map(item => ({ item, score: score(abbr, item, true) }))
.filter(obj => obj.score)
.sort((a, b) => b.score - a.score)
.map(obj => obj.item)[0];
it('compare scores', () => {
equal(score('aaa', 'aaa'), 1);
equal(score('baa', 'aaa'), 0);
ok(!score('b', 'aaa'));
ok(score('a', 'aaa'));
ok(score('a', 'abc'));
ok(score('ac', 'abc'));
ok(score('a', 'aaa') < score('aa', 'aaa'));
ok(score('ab', 'abc') > score('ab', 'acb'));
// acronym bonus
ok(score('ab', 'a-b') > score('ab', 'acb'));
});
it('pick padding or position', () => {
const items = ['p', 'pb', 'pl', 'pos', 'pa', 'oa', 'soa', 'pr', 'pt'];
equal(pick('p', items), 'p');
equal(pick('poa', items), 'pos');
});
});
it('keywords', () => {
equal(expand('bd1-s'), 'border: 1px solid;');
equal(expand('dib'), 'display: inline-block;');
equal(expand('bxsz'), 'box-sizing: ${1:border-box};');
equal(expand('bxz'), 'box-sizing: ${1:border-box};');
equal(expand('bxzc'), 'box-sizing: content-box;');
equal(expand('fl'), 'float: ${1:left};');
equal(expand('fll'), 'float: left;');
equal(expand('pos'), 'position: ${1:relative};');
equal(expand('poa'), 'position: absolute;');
equal(expand('por'), 'position: relative;');
equal(expand('pof'), 'position: fixed;');
equal(expand('pos-a'), 'position: absolute;');
equal(expand('m'), 'margin: ${0};');
equal(expand('m0'), 'margin: 0;');
// use `auto` as global keyword
equal(expand('m0-a'), 'margin: 0 auto;');
equal(expand('m-a'), 'margin: auto;');
equal(expand('bg'), 'background: ${1:#000};');
equal(expand('bd'), 'border: ${1:1px} ${2:solid} ${3:#000};');
equal(expand('bd0-s#fc0'), 'border: 0 solid #fc0;');
equal(expand('bd0-dd#fc0'), 'border: 0 dot-dash #fc0;');
equal(expand('bd0-h#fc0'), 'border: 0 hidden #fc0;');
equal(expand('trf-trs'), 'transform: translate(${1:x}, ${2:y});');
equal(expand('p0'), 'padding: 0;', 'No unit for 0');
equal(expand('p10'), 'padding: 10px;', '`px` unit for integers');
equal(expand('p.4'), 'padding: 0.4em;', '`em` for floats');
equal(expand('p10p'), 'padding: 10%;', 'unit alias');
equal(expand('z10'), 'z-index: 10;', 'Unitless property');
equal(expand('p10r'), 'padding: 10rem;', 'unit alias');
equal(expand('lis:n'), 'list-style: none;');
equal(expand('list:n'), 'list-style-type: none;');
equal(expand('bdt:n'), 'border-top: none;');
equal(expand('bgi:n'), 'background-image: none;');
equal(expand('q:n'), 'quotes: none;');
});
it('numeric', () => {
equal(expand('p0'), 'padding: 0;', 'No unit for 0');
equal(expand('p10'), 'padding: 10px;', '`px` unit for integers');
equal(expand('p.4'), 'padding: 0.4em;', '`em` for floats');
equal(expand('fz10'), 'font-size: 10px;', '`px` for integers');
equal(expand('fz1.'), 'font-size: 1em;', '`em` for explicit float');
equal(expand('p10p'), 'padding: 10%;', 'unit alias');
equal(expand('z10'), 'z-index: 10;', 'Unitless property');
equal(expand('p10r'), 'padding: 10rem;', 'unit alias');
equal(expand('mten'), 'margin: 10px;', 'Ignore terminating `;` in snippet');
// https://github.com/microsoft/vscode/issues/59951
equal(expand('fz'), 'font-size: ${0};');
equal(expand('fz12'), 'font-size: 12px;');
equal(expand('fsz'), 'font-size: ${0};');
equal(expand('fsz12'), 'font-size: 12px;');
equal(expand('fs'), 'font-style: ${1:italic};');
// https://github.com/emmetio/emmet/issues/558
equal(expand('us'), 'user-select: none;');
// https://github.com/microsoft/vscode/issues/105697
equal(expand('opa1'), 'opacity: 1;', 'Unitless property');
equal(expand('opa.1'), 'opacity: 0.1;', 'Unitless property');
equal(expand('opa.a'), 'opacity: .a;', 'Unitless property');
});
it('numeric with format options', () => {
const config = resolveConfig({
type: 'stylesheet',
options: {
'stylesheet.intUnit': 'pt',
'stylesheet.floatUnit': 'vh',
'stylesheet.unitAliases': {
e: 'em',
p: '%',
x: 'ex',
r: ' / @rem'
}
}
});
equal(expand('p0', config), 'padding: 0;', 'No unit for 0');
equal(expand('p10', config), 'padding: 10pt;', '`pt` unit for integers');
equal(expand('p.4', config), 'padding: 0.4vh;', '`vh` for floats');
equal(expand('p10p', config), 'padding: 10%;', 'unit alias');
equal(expand('z10', config), 'z-index: 10;', 'Unitless property');
equal(expand('p10r', config), 'padding: 10 / @rem;', 'unit alias');
});
it('important', () => {
equal(expand('!'), '!important');
equal(expand('p!'), 'padding: ${0} !important;');
equal(expand('p0!'), 'padding: 0 !important;');
});
it('color', () => {
equal(expand('c'), 'color: ${1:#000};');
equal(expand('c#'), 'color: #000;');
equal(expand('c#f.5'), 'color: rgba(255, 255, 255, 0.5);');
equal(expand('c#f.5!'), 'color: rgba(255, 255, 255, 0.5) !important;');
equal(expand('bgc'), 'background-color: #${1:fff};');
});
it('snippets', () => {
equal(expand('@'), '@media ${1:screen} {\n\t${0}\n}');
// Insert value into snippet fields
equal(expand('@k-name'), '@keyframes name {\n\t${2}\n}');
equal(expand('@k-name10'), '@keyframes name {\n\t10\n}');
equal(expand('gt'), 'grid-template: repeat(2, auto) / repeat(auto-fit, minmax(250px, 1fr));');
});
it('multiple properties', () => {
equal(expand('p10+m10-20'), 'padding: 10px;\nmargin: 10px 20px;');
equal(expand('p+bd'), 'padding: ${0};\nborder: ${1:1px} ${2:solid} ${3:#000};');
});
it('functions', () => {
equal(expand('trf-s(2)'), 'transform: scale(2, ${2:y});');
equal(expand('trf-s(2, 3)'), 'transform: scale(2, 3);');
});
it('case insensitive matches', () => {
equal(expand('trf:rx'), 'transform: rotateX(${1:angle});');
});
it('gradient resolver', () => {
equal(expand('lg'), 'background-image: linear-gradient(${0});');
equal(expand('lg(to right, #0, #f00.5)'), 'background-image: linear-gradient(to right, #000, rgba(255, 0, 0, 0.5));');
});
it('unmatched abbreviation', () => {
// This example is useless: it’s unexpected to receive `align-self: unset`
// for `auto` snippet
// equal(expand('auto', resolveConfig({
// type: 'stylesheet',
// options: { 'stylesheet.fuzzySearchMinScore': 0 }
// })), 'align-self: unset;');
equal(expand('auto'), 'auto: ${0};');
});
it('CSS-in-JS', () => {
const config = resolveConfig({
type: 'stylesheet',
options: {
'stylesheet.json': true,
'stylesheet.between': ': '
}
});
equal(expand('p10+mt10-20', config), 'padding: 10,\nmarginTop: \'10px 20px\',');
equal(expand('bgc', config), 'backgroundColor: \'#fff\',');
});
it('resolve context value', () => {
const config = resolveConfig({
type: 'stylesheet',
context: { name: 'align-content' }
});
equal(expand('s', config), 'start');
equal(expand('a', config), 'auto');
});
it('limit snippets by scope', () => {
const sectionScope = resolveConfig({
type: 'stylesheet',
context: { name: CSSAbbreviationScope.Section },
snippets: {
mten: 'margin: 10px;',
fsz: 'font-size',
myCenterAwesome: 'body {\n\tdisplay: grid;\n}'
}
});
const propertyScope = resolveConfig({
type: 'stylesheet',
context: { name: CSSAbbreviationScope.Property },
snippets: {
mten: 'margin: 10px;',
fsz: 'font-size',
myCenterAwesome: 'body {\n\tdisplay: grid;\n}'
}
});
equal(expand('m', sectionScope), 'body {\n\tdisplay: grid;\n}');
equal(expand('b', sectionScope), '');
equal(expand('m', propertyScope), 'margin: ;');
});
});
<MSG> Handle explicit float values in stylesheet abbreviations
<DFF> @@ -85,6 +85,8 @@ describe('Stylesheet abbreviations', () => {
equal(expand('p0'), 'padding: 0;', 'No unit for 0');
equal(expand('p10'), 'padding: 10px;', '`px` unit for integers');
equal(expand('p.4'), 'padding: 0.4em;', '`em` for floats');
+ equal(expand('fz10'), 'font-size: 10px;', '`px` for integers');
+ equal(expand('fz1.'), 'font-size: 1em;', '`em` for explicit float');
equal(expand('p10p'), 'padding: 10%;', 'unit alias');
equal(expand('z10'), 'z-index: 10;', 'Unitless property');
equal(expand('p10r'), 'padding: 10rem;', 'unit alias');
| 2 | Handle explicit float values in stylesheet abbreviations | 0 | .ts | ts | mit | emmetio/emmet |
10070926 | <NME> 7.0.gemfile
<BEF> ADDFILE
<MSG> Merge pull request #671 from splitrb/add-newer-rails-and-ruby-to-ci
Add newer versions of Rails and Ruby to be tested on CI
<DFF> @@ -0,0 +1,9 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "codeclimate-test-reporter"
+gem "rails", "~> 7.0"
+
+gemspec path: "../"
| 9 | Merge pull request #671 from splitrb/add-newer-rails-and-ruby-to-ci | 0 | .gemfile | 0 | mit | splitrb/split |
10070927 | <NME> 7.0.gemfile
<BEF> ADDFILE
<MSG> Merge pull request #671 from splitrb/add-newer-rails-and-ruby-to-ci
Add newer versions of Rails and Ruby to be tested on CI
<DFF> @@ -0,0 +1,9 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "codeclimate-test-reporter"
+gem "rails", "~> 7.0"
+
+gemspec path: "../"
| 9 | Merge pull request #671 from splitrb/add-newer-rails-and-ruby-to-ci | 0 | .gemfile | 0 | mit | splitrb/split |
10070928 | <NME> 7.0.gemfile
<BEF> ADDFILE
<MSG> Merge pull request #671 from splitrb/add-newer-rails-and-ruby-to-ci
Add newer versions of Rails and Ruby to be tested on CI
<DFF> @@ -0,0 +1,9 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "codeclimate-test-reporter"
+gem "rails", "~> 7.0"
+
+gemspec path: "../"
| 9 | Merge pull request #671 from splitrb/add-newer-rails-and-ruby-to-ci | 0 | .gemfile | 0 | mit | splitrb/split |
10070929 | <NME> redis_adapter.rb
<BEF> # frozen_string_literal: true
module Split
module Persistence
class RedisAdapter
DEFAULT_CONFIG = {namespace: 'persistence'}.freeze
attr_reader :redis_key
def initialize(context, key = nil)
if key
@redis_key = "#{self.class.config[:namespace]}:#{key}"
elsif lookup_by = self.class.config[:lookup_by]
if lookup_by.respond_to?(:call)
key_frag = lookup_by.call(context)
else
key_frag = context.send(lookup_by)
end
@redis_key = "#{self.class.config[:namespace]}:#{key_frag}"
else
raise "Please configure lookup_by"
end
end
def [](field)
Split.redis.hget(redis_key, field)
end
def []=(field, value)
Split.redis.hset(redis_key, field, value)
expire_seconds = self.class.config[:expire_seconds]
Split.redis.expire(redis_key, expire_seconds) if expire_seconds
end
def delete(field)
Split.redis.hdel(redis_key, field)
end
def keys
Split.redis.hkeys(redis_key)
end
def self.find(user_id)
new(nil, user_id)
end
def self.with_config(options = {})
self.config.merge!(options)
self
end
def self.config
@config ||= DEFAULT_CONFIG.dup
end
def self.reset_config!
@config = DEFAULT_CONFIG.dup
end
end
end
end
<MSG> Fix Layout/SpaceInsideHashLiteralBraces
<DFF> @@ -3,7 +3,7 @@
module Split
module Persistence
class RedisAdapter
- DEFAULT_CONFIG = {namespace: 'persistence'}.freeze
+ DEFAULT_CONFIG = { namespace: 'persistence' }.freeze
attr_reader :redis_key
| 1 | Fix Layout/SpaceInsideHashLiteralBraces | 1 | .rb | rb | mit | splitrb/split |
10070930 | <NME> redis_adapter.rb
<BEF> # frozen_string_literal: true
module Split
module Persistence
class RedisAdapter
DEFAULT_CONFIG = {namespace: 'persistence'}.freeze
attr_reader :redis_key
def initialize(context, key = nil)
if key
@redis_key = "#{self.class.config[:namespace]}:#{key}"
elsif lookup_by = self.class.config[:lookup_by]
if lookup_by.respond_to?(:call)
key_frag = lookup_by.call(context)
else
key_frag = context.send(lookup_by)
end
@redis_key = "#{self.class.config[:namespace]}:#{key_frag}"
else
raise "Please configure lookup_by"
end
end
def [](field)
Split.redis.hget(redis_key, field)
end
def []=(field, value)
Split.redis.hset(redis_key, field, value)
expire_seconds = self.class.config[:expire_seconds]
Split.redis.expire(redis_key, expire_seconds) if expire_seconds
end
def delete(field)
Split.redis.hdel(redis_key, field)
end
def keys
Split.redis.hkeys(redis_key)
end
def self.find(user_id)
new(nil, user_id)
end
def self.with_config(options = {})
self.config.merge!(options)
self
end
def self.config
@config ||= DEFAULT_CONFIG.dup
end
def self.reset_config!
@config = DEFAULT_CONFIG.dup
end
end
end
end
<MSG> Fix Layout/SpaceInsideHashLiteralBraces
<DFF> @@ -3,7 +3,7 @@
module Split
module Persistence
class RedisAdapter
- DEFAULT_CONFIG = {namespace: 'persistence'}.freeze
+ DEFAULT_CONFIG = { namespace: 'persistence' }.freeze
attr_reader :redis_key
| 1 | Fix Layout/SpaceInsideHashLiteralBraces | 1 | .rb | rb | mit | splitrb/split |
10070931 | <NME> redis_adapter.rb
<BEF> # frozen_string_literal: true
module Split
module Persistence
class RedisAdapter
DEFAULT_CONFIG = {namespace: 'persistence'}.freeze
attr_reader :redis_key
def initialize(context, key = nil)
if key
@redis_key = "#{self.class.config[:namespace]}:#{key}"
elsif lookup_by = self.class.config[:lookup_by]
if lookup_by.respond_to?(:call)
key_frag = lookup_by.call(context)
else
key_frag = context.send(lookup_by)
end
@redis_key = "#{self.class.config[:namespace]}:#{key_frag}"
else
raise "Please configure lookup_by"
end
end
def [](field)
Split.redis.hget(redis_key, field)
end
def []=(field, value)
Split.redis.hset(redis_key, field, value)
expire_seconds = self.class.config[:expire_seconds]
Split.redis.expire(redis_key, expire_seconds) if expire_seconds
end
def delete(field)
Split.redis.hdel(redis_key, field)
end
def keys
Split.redis.hkeys(redis_key)
end
def self.find(user_id)
new(nil, user_id)
end
def self.with_config(options = {})
self.config.merge!(options)
self
end
def self.config
@config ||= DEFAULT_CONFIG.dup
end
def self.reset_config!
@config = DEFAULT_CONFIG.dup
end
end
end
end
<MSG> Fix Layout/SpaceInsideHashLiteralBraces
<DFF> @@ -3,7 +3,7 @@
module Split
module Persistence
class RedisAdapter
- DEFAULT_CONFIG = {namespace: 'persistence'}.freeze
+ DEFAULT_CONFIG = { namespace: 'persistence' }.freeze
attr_reader :redis_key
| 1 | Fix Layout/SpaceInsideHashLiteralBraces | 1 | .rb | rb | mit | splitrb/split |
10070932 | <NME> engine.rb
<BEF> ADDFILE
<MSG> Merge pull request #68 from buddhamagnet/master
Extracting Rails-specific code
<DFF> @@ -0,0 +1,8 @@
+module Split
+ class Engine < ::Rails::Engine
+ initializer "split" do |app|
+ ActionController::Base.send :include, Split::Helper
+ ActionController::Base.helper Split::Helper
+ end
+ end
+end
\ No newline at end of file
| 8 | Merge pull request #68 from buddhamagnet/master | 0 | .rb | rb | mit | splitrb/split |
10070933 | <NME> engine.rb
<BEF> ADDFILE
<MSG> Merge pull request #68 from buddhamagnet/master
Extracting Rails-specific code
<DFF> @@ -0,0 +1,8 @@
+module Split
+ class Engine < ::Rails::Engine
+ initializer "split" do |app|
+ ActionController::Base.send :include, Split::Helper
+ ActionController::Base.helper Split::Helper
+ end
+ end
+end
\ No newline at end of file
| 8 | Merge pull request #68 from buddhamagnet/master | 0 | .rb | rb | mit | splitrb/split |
10070934 | <NME> engine.rb
<BEF> ADDFILE
<MSG> Merge pull request #68 from buddhamagnet/master
Extracting Rails-specific code
<DFF> @@ -0,0 +1,8 @@
+module Split
+ class Engine < ::Rails::Engine
+ initializer "split" do |app|
+ ActionController::Base.send :include, Split::Helper
+ ActionController::Base.helper Split::Helper
+ end
+ end
+end
\ No newline at end of file
| 8 | Merge pull request #68 from buddhamagnet/master | 0 | .rb | rb | mit | splitrb/split |
10070935 | <NME> index.ts
<BEF> import markupAbbreviation, { Abbreviation } from '@emmetio/abbreviation';
import stylesheetAbbreviation, { CSSAbbreviation } from '@emmetio/css-abbreviation';
import parseMarkup, { stringify as stringifyMarkup } from './markup';
import parseStylesheet, {
stringify as stringifyStylesheet,
convertSnippets as parseStylesheetSnippets,
CSSAbbreviationScope
} from './stylesheet';
import resolveConfig, { UserConfig, Config } from './config';
export default function expandAbbreviation(abbr: string, config?: UserConfig): string {
const resolvedConfig = resolveConfig(config);
return resolvedConfig.type === 'stylesheet'
? stylesheet(abbr, resolvedConfig)
: markup(abbr, resolvedConfig);
}
/**
* Expands given *markup* abbreviation (e.g. regular Emmet abbreviation that
* produces structured output like HTML) and outputs it according to options
* provided in config
*/
export function markup(abbr: string | Abbreviation, config: Config) {
return stringifyMarkup(parseMarkup(abbr, config), config);
}
/**
* Expands given *stylesheet* abbreviation (a special Emmet abbreviation designed for
* stylesheet languages like CSS, SASS etc.) and outputs it according to options
* provided in config
*/
export function stylesheet(abbr: string | CSSAbbreviation, config: Config) {
return stringifyStylesheet(parseStylesheet(abbr, config), config);
export {
markupAbbreviation, parseMarkup, stringifyMarkup,
stylesheetAbbreviation, parseStylesheet, stringifyStylesheet, parseStylesheetSnippets
};
export { default as extract, ExtractOptions, ExtractedAbbreviation } from './extract-abbreviation';
export { GlobalConfig, SyntaxType, Config, UserConfig, Options, AbbreviationContext, default as resolveConfig } from './config';
export { default as extract, ExtractOptions, ExtractedAbbreviation } from './extract-abbreviation';
export { GlobalConfig, SyntaxType, Config, UserConfig, Options, AbbreviationContext, default as resolveConfig } from './config';
<MSG> Export method for fetching next token from stream
<DFF> @@ -34,7 +34,8 @@ export function stylesheet(abbr: string | CSSAbbreviation, config: Config) {
export {
markupAbbreviation, parseMarkup, stringifyMarkup,
- stylesheetAbbreviation, parseStylesheet, stringifyStylesheet, parseStylesheetSnippets
+ stylesheetAbbreviation, parseStylesheet, stringifyStylesheet, parseStylesheetSnippets,
+ Abbreviation as MarkupAbbreviation, CSSAbbreviation as StylesheetAbbreviation
};
export { default as extract, ExtractOptions, ExtractedAbbreviation } from './extract-abbreviation';
export { GlobalConfig, SyntaxType, Config, UserConfig, Options, AbbreviationContext, default as resolveConfig } from './config';
| 2 | Export method for fetching next token from stream | 1 | .ts | ts | mit | emmetio/emmet |
10070936 | <NME> index.ts
<BEF> import markupAbbreviation, { Abbreviation } from '@emmetio/abbreviation';
import stylesheetAbbreviation, { CSSAbbreviation } from '@emmetio/css-abbreviation';
import parseMarkup, { stringify as stringifyMarkup } from './markup';
import parseStylesheet, {
stringify as stringifyStylesheet,
convertSnippets as parseStylesheetSnippets,
CSSAbbreviationScope
} from './stylesheet';
import resolveConfig, { UserConfig, Config } from './config';
export default function expandAbbreviation(abbr: string, config?: UserConfig): string {
const resolvedConfig = resolveConfig(config);
return resolvedConfig.type === 'stylesheet'
? stylesheet(abbr, resolvedConfig)
: markup(abbr, resolvedConfig);
}
/**
* Expands given *markup* abbreviation (e.g. regular Emmet abbreviation that
* produces structured output like HTML) and outputs it according to options
* provided in config
*/
export function markup(abbr: string | Abbreviation, config: Config) {
return stringifyMarkup(parseMarkup(abbr, config), config);
}
/**
* Expands given *stylesheet* abbreviation (a special Emmet abbreviation designed for
* stylesheet languages like CSS, SASS etc.) and outputs it according to options
* provided in config
*/
export function stylesheet(abbr: string | CSSAbbreviation, config: Config) {
return stringifyStylesheet(parseStylesheet(abbr, config), config);
export {
markupAbbreviation, parseMarkup, stringifyMarkup,
stylesheetAbbreviation, parseStylesheet, stringifyStylesheet, parseStylesheetSnippets
};
export { default as extract, ExtractOptions, ExtractedAbbreviation } from './extract-abbreviation';
export { GlobalConfig, SyntaxType, Config, UserConfig, Options, AbbreviationContext, default as resolveConfig } from './config';
export { default as extract, ExtractOptions, ExtractedAbbreviation } from './extract-abbreviation';
export { GlobalConfig, SyntaxType, Config, UserConfig, Options, AbbreviationContext, default as resolveConfig } from './config';
<MSG> Export method for fetching next token from stream
<DFF> @@ -34,7 +34,8 @@ export function stylesheet(abbr: string | CSSAbbreviation, config: Config) {
export {
markupAbbreviation, parseMarkup, stringifyMarkup,
- stylesheetAbbreviation, parseStylesheet, stringifyStylesheet, parseStylesheetSnippets
+ stylesheetAbbreviation, parseStylesheet, stringifyStylesheet, parseStylesheetSnippets,
+ Abbreviation as MarkupAbbreviation, CSSAbbreviation as StylesheetAbbreviation
};
export { default as extract, ExtractOptions, ExtractedAbbreviation } from './extract-abbreviation';
export { GlobalConfig, SyntaxType, Config, UserConfig, Options, AbbreviationContext, default as resolveConfig } from './config';
| 2 | Export method for fetching next token from stream | 1 | .ts | ts | mit | emmetio/emmet |
10070937 | <NME> utils.py
<BEF> ADDFILE
<MSG> improved distutils POST data handling based on how PyPI actually does it
<DFF> @@ -0,0 +1,38 @@
+import sys
+import traceback
+
+from django.core.files.uploadedfile import SimpleUploadedFile
+from django.utils.datastructures import MultiValueDict
+
+
+def transmute(f):
+ if hasattr(f, "filename") and f.filename:
+ v = SimpleUploadedFile(f.filename, f.value, f.type)
+ else:
+ v = f.value.decode("utf-8")
+ return v
+
+
+def decode_fs(fs):
+ POST, FILES = {}, {}
+ for k in fs.keys():
+ v = transmute(fs[k])
+ if isinstance(v, SimpleUploadedFile):
+ FILES[k] = [v]
+ else:
+ # Distutils sends UNKNOWN for empty fields (e.g platform)
+ # [[email protected]]
+ if v == "UNKNOWN":
+ v = None
+ POST[k] = [v]
+ return MultiValueDict(POST), MultiValueDict(FILES)
+
+
+def debug(func):
+ # @debug is handy when debugging distutils requests
+ def _wrapped(*args, **kwargs):
+ try:
+ return func(*args, **kwargs)
+ except:
+ traceback.print_exception(*sys.exc_info())
+ return _wrapped
\ No newline at end of file
| 38 | improved distutils POST data handling based on how PyPI actually does it | 0 | .py | py | bsd-3-clause | ask/chishop |
10070938 | <NME> helper.rb
<BEF> # frozen_string_literal: true
module Split
module Helper
OVERRIDE_PARAM_NAME = "ab_test"
module_function
def ab_test(metric_descriptor, control = nil, *alternatives)
begin
experiment = ExperimentCatalog.find_or_initialize(metric_descriptor, control, *alternatives)
alternative = if Split.configuration.enabled && !exclude_visitor?
experiment.save
raise(Split::InvalidExperimentsFormatError) unless (Split.configuration.experiments || {}).fetch(experiment.name.to_sym, {})[:combined_experiments].nil?
trial = Trial.new(user: ab_user, experiment: experiment,
override: override_alternative(experiment.name), exclude: exclude_visitor?,
disabled: split_generically_disabled?)
alt = trial.choose!(self)
alt ? alt.name : nil
else
control_variable(experiment.control)
end
rescue Errno::ECONNREFUSED, Redis::BaseError, SocketError => e
raise(e) unless Split.configuration.db_failover
Split.configuration.db_failover_on_db_error.call(e)
if Split.configuration.db_failover_allow_parameter_override
alternative = override_alternative(experiment.name) if override_present?(experiment.name)
alternative = control_variable(experiment.control) if split_generically_disabled?
end
ensure
alternative ||= control_variable(experiment.control)
end
if block_given?
metadata = experiment.metadata[alternative] if experiment.metadata
yield(alternative, metadata || {})
else
alternative
end
end
def reset!(experiment)
ab_user.delete(experiment.key)
end
def finish_experiment(experiment, options = { reset: true })
return false if active_experiments[experiment.name].nil?
return true if experiment.has_winner?
should_reset = experiment.resettable? && options[:reset]
if ab_user[experiment.finished_key] && !should_reset
true
else
alternative_name = ab_user[experiment.key]
trial = Trial.new(
user: ab_user,
experiment: experiment,
alternative: alternative_name,
goals: options[:goals],
)
trial.complete!(self)
if should_reset
reset!(experiment)
else
ab_user[experiment.finished_key] = true
end
end
end
def ab_finished(metric_descriptor, options = { reset: true })
return if exclude_visitor? || Split.configuration.disabled?
metric_descriptor, goals = normalize_metric(metric_descriptor)
experiments = Metric.possible_experiments(metric_descriptor)
if experiments.any?
experiments.each do |experiment|
next if override_present?(experiment.key)
finish_experiment(experiment, options.merge(goals: goals))
end
end
rescue => e
raise unless Split.configuration.db_failover
Split.configuration.db_failover_on_db_error.call(e)
end
def ab_record_extra_info(metric_descriptor, key, value = 1)
return if exclude_visitor? || Split.configuration.disabled?
metric_descriptor, _ = normalize_metric(metric_descriptor)
experiments = Metric.possible_experiments(metric_descriptor)
if experiments.any?
experiments.each do |experiment|
alternative_name = ab_user[experiment.key]
if alternative_name
alternative = experiment.alternatives.find { |alt| alt.name == alternative_name }
alternative.record_extra_info(key, value) if alternative
end
end
end
rescue => e
raise unless Split.configuration.db_failover
Split.configuration.db_failover_on_db_error.call(e)
end
def ab_active_experiments
ab_user.active_experiments
rescue => e
raise unless Split.configuration.db_failover
Split.configuration.db_failover_on_db_error.call(e)
end
def override_present?(experiment_name)
override_alternative_by_params(experiment_name) || override_alternative_by_cookies(experiment_name)
end
def override_alternative(experiment_name)
override_alternative_by_params(experiment_name) || override_alternative_by_cookies(experiment_name)
end
def override_alternative_by_params(experiment_name)
defined?(params) && params[OVERRIDE_PARAM_NAME] && params[OVERRIDE_PARAM_NAME][experiment_name]
end
def override_alternative_by_cookies(experiment_name)
return unless defined?(request)
if request.cookies && request.cookies.key?("split_override")
experiments = JSON.parse(request.cookies["split_override"]) rescue {}
experiments[experiment_name]
end
end
end
def is_robot?
request.user_agent =~ Split.configuration.robot_regex
end
def is_ignored_ip_address?
return false if Split.configuration.ignore_ip_addresses.empty?
Split.configuration.ignore_ip_addresses.each do |ip|
return true if request.ip == ip || (ip.class == Regexp && request.ip =~ ip)
end
false
end
defined?(request) && request.user_agent =~ Split.configuration.robot_regex
end
def is_preview?
defined?(request) && defined?(request.headers) && request.headers["x-purpose"] == "preview"
end
def is_ignored_ip_address?
return false if Split.configuration.ignore_ip_addresses.empty?
Split.configuration.ignore_ip_addresses.each do |ip|
return true if defined?(request) && (request.ip == ip || (ip.class == Regexp && request.ip =~ ip))
end
false
end
def active_experiments
ab_user.active_experiments
end
def normalize_metric(metric_descriptor)
if Hash === metric_descriptor
experiment_name = metric_descriptor.keys.first
goals = Array(metric_descriptor.values.first)
else
experiment_name = metric_descriptor
goals = []
end
return experiment_name, goals
end
def control_variable(control)
Hash === control ? control.keys.first.to_s : control.to_s
end
end
end
<MSG> Ensure request is defined before calling methods on it
In #is_robot? and #is_ignore_ip_address?, request is assumed to be
accessible. As a result, the Split::Helper module can only really be
included in a Controller context.
This commit removes that requirement by conditionally checking that
request is defined by attempting to call methods on it.
<DFF> @@ -135,14 +135,14 @@ module Split
end
def is_robot?
- request.user_agent =~ Split.configuration.robot_regex
+ defined?(request) && request.user_agent =~ Split.configuration.robot_regex
end
def is_ignored_ip_address?
return false if Split.configuration.ignore_ip_addresses.empty?
Split.configuration.ignore_ip_addresses.each do |ip|
- return true if request.ip == ip || (ip.class == Regexp && request.ip =~ ip)
+ return true if defined?(request) && (request.ip == ip || (ip.class == Regexp && request.ip =~ ip))
end
false
end
| 2 | Ensure request is defined before calling methods on it | 2 | .rb | rb | mit | splitrb/split |
10070939 | <NME> helper.rb
<BEF> # frozen_string_literal: true
module Split
module Helper
OVERRIDE_PARAM_NAME = "ab_test"
module_function
def ab_test(metric_descriptor, control = nil, *alternatives)
begin
experiment = ExperimentCatalog.find_or_initialize(metric_descriptor, control, *alternatives)
alternative = if Split.configuration.enabled && !exclude_visitor?
experiment.save
raise(Split::InvalidExperimentsFormatError) unless (Split.configuration.experiments || {}).fetch(experiment.name.to_sym, {})[:combined_experiments].nil?
trial = Trial.new(user: ab_user, experiment: experiment,
override: override_alternative(experiment.name), exclude: exclude_visitor?,
disabled: split_generically_disabled?)
alt = trial.choose!(self)
alt ? alt.name : nil
else
control_variable(experiment.control)
end
rescue Errno::ECONNREFUSED, Redis::BaseError, SocketError => e
raise(e) unless Split.configuration.db_failover
Split.configuration.db_failover_on_db_error.call(e)
if Split.configuration.db_failover_allow_parameter_override
alternative = override_alternative(experiment.name) if override_present?(experiment.name)
alternative = control_variable(experiment.control) if split_generically_disabled?
end
ensure
alternative ||= control_variable(experiment.control)
end
if block_given?
metadata = experiment.metadata[alternative] if experiment.metadata
yield(alternative, metadata || {})
else
alternative
end
end
def reset!(experiment)
ab_user.delete(experiment.key)
end
def finish_experiment(experiment, options = { reset: true })
return false if active_experiments[experiment.name].nil?
return true if experiment.has_winner?
should_reset = experiment.resettable? && options[:reset]
if ab_user[experiment.finished_key] && !should_reset
true
else
alternative_name = ab_user[experiment.key]
trial = Trial.new(
user: ab_user,
experiment: experiment,
alternative: alternative_name,
goals: options[:goals],
)
trial.complete!(self)
if should_reset
reset!(experiment)
else
ab_user[experiment.finished_key] = true
end
end
end
def ab_finished(metric_descriptor, options = { reset: true })
return if exclude_visitor? || Split.configuration.disabled?
metric_descriptor, goals = normalize_metric(metric_descriptor)
experiments = Metric.possible_experiments(metric_descriptor)
if experiments.any?
experiments.each do |experiment|
next if override_present?(experiment.key)
finish_experiment(experiment, options.merge(goals: goals))
end
end
rescue => e
raise unless Split.configuration.db_failover
Split.configuration.db_failover_on_db_error.call(e)
end
def ab_record_extra_info(metric_descriptor, key, value = 1)
return if exclude_visitor? || Split.configuration.disabled?
metric_descriptor, _ = normalize_metric(metric_descriptor)
experiments = Metric.possible_experiments(metric_descriptor)
if experiments.any?
experiments.each do |experiment|
alternative_name = ab_user[experiment.key]
if alternative_name
alternative = experiment.alternatives.find { |alt| alt.name == alternative_name }
alternative.record_extra_info(key, value) if alternative
end
end
end
rescue => e
raise unless Split.configuration.db_failover
Split.configuration.db_failover_on_db_error.call(e)
end
def ab_active_experiments
ab_user.active_experiments
rescue => e
raise unless Split.configuration.db_failover
Split.configuration.db_failover_on_db_error.call(e)
end
def override_present?(experiment_name)
override_alternative_by_params(experiment_name) || override_alternative_by_cookies(experiment_name)
end
def override_alternative(experiment_name)
override_alternative_by_params(experiment_name) || override_alternative_by_cookies(experiment_name)
end
def override_alternative_by_params(experiment_name)
defined?(params) && params[OVERRIDE_PARAM_NAME] && params[OVERRIDE_PARAM_NAME][experiment_name]
end
def override_alternative_by_cookies(experiment_name)
return unless defined?(request)
if request.cookies && request.cookies.key?("split_override")
experiments = JSON.parse(request.cookies["split_override"]) rescue {}
experiments[experiment_name]
end
end
end
def is_robot?
request.user_agent =~ Split.configuration.robot_regex
end
def is_ignored_ip_address?
return false if Split.configuration.ignore_ip_addresses.empty?
Split.configuration.ignore_ip_addresses.each do |ip|
return true if request.ip == ip || (ip.class == Regexp && request.ip =~ ip)
end
false
end
defined?(request) && request.user_agent =~ Split.configuration.robot_regex
end
def is_preview?
defined?(request) && defined?(request.headers) && request.headers["x-purpose"] == "preview"
end
def is_ignored_ip_address?
return false if Split.configuration.ignore_ip_addresses.empty?
Split.configuration.ignore_ip_addresses.each do |ip|
return true if defined?(request) && (request.ip == ip || (ip.class == Regexp && request.ip =~ ip))
end
false
end
def active_experiments
ab_user.active_experiments
end
def normalize_metric(metric_descriptor)
if Hash === metric_descriptor
experiment_name = metric_descriptor.keys.first
goals = Array(metric_descriptor.values.first)
else
experiment_name = metric_descriptor
goals = []
end
return experiment_name, goals
end
def control_variable(control)
Hash === control ? control.keys.first.to_s : control.to_s
end
end
end
<MSG> Ensure request is defined before calling methods on it
In #is_robot? and #is_ignore_ip_address?, request is assumed to be
accessible. As a result, the Split::Helper module can only really be
included in a Controller context.
This commit removes that requirement by conditionally checking that
request is defined by attempting to call methods on it.
<DFF> @@ -135,14 +135,14 @@ module Split
end
def is_robot?
- request.user_agent =~ Split.configuration.robot_regex
+ defined?(request) && request.user_agent =~ Split.configuration.robot_regex
end
def is_ignored_ip_address?
return false if Split.configuration.ignore_ip_addresses.empty?
Split.configuration.ignore_ip_addresses.each do |ip|
- return true if request.ip == ip || (ip.class == Regexp && request.ip =~ ip)
+ return true if defined?(request) && (request.ip == ip || (ip.class == Regexp && request.ip =~ ip))
end
false
end
| 2 | Ensure request is defined before calling methods on it | 2 | .rb | rb | mit | splitrb/split |
10070940 | <NME> helper.rb
<BEF> # frozen_string_literal: true
module Split
module Helper
OVERRIDE_PARAM_NAME = "ab_test"
module_function
def ab_test(metric_descriptor, control = nil, *alternatives)
begin
experiment = ExperimentCatalog.find_or_initialize(metric_descriptor, control, *alternatives)
alternative = if Split.configuration.enabled && !exclude_visitor?
experiment.save
raise(Split::InvalidExperimentsFormatError) unless (Split.configuration.experiments || {}).fetch(experiment.name.to_sym, {})[:combined_experiments].nil?
trial = Trial.new(user: ab_user, experiment: experiment,
override: override_alternative(experiment.name), exclude: exclude_visitor?,
disabled: split_generically_disabled?)
alt = trial.choose!(self)
alt ? alt.name : nil
else
control_variable(experiment.control)
end
rescue Errno::ECONNREFUSED, Redis::BaseError, SocketError => e
raise(e) unless Split.configuration.db_failover
Split.configuration.db_failover_on_db_error.call(e)
if Split.configuration.db_failover_allow_parameter_override
alternative = override_alternative(experiment.name) if override_present?(experiment.name)
alternative = control_variable(experiment.control) if split_generically_disabled?
end
ensure
alternative ||= control_variable(experiment.control)
end
if block_given?
metadata = experiment.metadata[alternative] if experiment.metadata
yield(alternative, metadata || {})
else
alternative
end
end
def reset!(experiment)
ab_user.delete(experiment.key)
end
def finish_experiment(experiment, options = { reset: true })
return false if active_experiments[experiment.name].nil?
return true if experiment.has_winner?
should_reset = experiment.resettable? && options[:reset]
if ab_user[experiment.finished_key] && !should_reset
true
else
alternative_name = ab_user[experiment.key]
trial = Trial.new(
user: ab_user,
experiment: experiment,
alternative: alternative_name,
goals: options[:goals],
)
trial.complete!(self)
if should_reset
reset!(experiment)
else
ab_user[experiment.finished_key] = true
end
end
end
def ab_finished(metric_descriptor, options = { reset: true })
return if exclude_visitor? || Split.configuration.disabled?
metric_descriptor, goals = normalize_metric(metric_descriptor)
experiments = Metric.possible_experiments(metric_descriptor)
if experiments.any?
experiments.each do |experiment|
next if override_present?(experiment.key)
finish_experiment(experiment, options.merge(goals: goals))
end
end
rescue => e
raise unless Split.configuration.db_failover
Split.configuration.db_failover_on_db_error.call(e)
end
def ab_record_extra_info(metric_descriptor, key, value = 1)
return if exclude_visitor? || Split.configuration.disabled?
metric_descriptor, _ = normalize_metric(metric_descriptor)
experiments = Metric.possible_experiments(metric_descriptor)
if experiments.any?
experiments.each do |experiment|
alternative_name = ab_user[experiment.key]
if alternative_name
alternative = experiment.alternatives.find { |alt| alt.name == alternative_name }
alternative.record_extra_info(key, value) if alternative
end
end
end
rescue => e
raise unless Split.configuration.db_failover
Split.configuration.db_failover_on_db_error.call(e)
end
def ab_active_experiments
ab_user.active_experiments
rescue => e
raise unless Split.configuration.db_failover
Split.configuration.db_failover_on_db_error.call(e)
end
def override_present?(experiment_name)
override_alternative_by_params(experiment_name) || override_alternative_by_cookies(experiment_name)
end
def override_alternative(experiment_name)
override_alternative_by_params(experiment_name) || override_alternative_by_cookies(experiment_name)
end
def override_alternative_by_params(experiment_name)
defined?(params) && params[OVERRIDE_PARAM_NAME] && params[OVERRIDE_PARAM_NAME][experiment_name]
end
def override_alternative_by_cookies(experiment_name)
return unless defined?(request)
if request.cookies && request.cookies.key?("split_override")
experiments = JSON.parse(request.cookies["split_override"]) rescue {}
experiments[experiment_name]
end
end
end
def is_robot?
request.user_agent =~ Split.configuration.robot_regex
end
def is_ignored_ip_address?
return false if Split.configuration.ignore_ip_addresses.empty?
Split.configuration.ignore_ip_addresses.each do |ip|
return true if request.ip == ip || (ip.class == Regexp && request.ip =~ ip)
end
false
end
defined?(request) && request.user_agent =~ Split.configuration.robot_regex
end
def is_preview?
defined?(request) && defined?(request.headers) && request.headers["x-purpose"] == "preview"
end
def is_ignored_ip_address?
return false if Split.configuration.ignore_ip_addresses.empty?
Split.configuration.ignore_ip_addresses.each do |ip|
return true if defined?(request) && (request.ip == ip || (ip.class == Regexp && request.ip =~ ip))
end
false
end
def active_experiments
ab_user.active_experiments
end
def normalize_metric(metric_descriptor)
if Hash === metric_descriptor
experiment_name = metric_descriptor.keys.first
goals = Array(metric_descriptor.values.first)
else
experiment_name = metric_descriptor
goals = []
end
return experiment_name, goals
end
def control_variable(control)
Hash === control ? control.keys.first.to_s : control.to_s
end
end
end
<MSG> Ensure request is defined before calling methods on it
In #is_robot? and #is_ignore_ip_address?, request is assumed to be
accessible. As a result, the Split::Helper module can only really be
included in a Controller context.
This commit removes that requirement by conditionally checking that
request is defined by attempting to call methods on it.
<DFF> @@ -135,14 +135,14 @@ module Split
end
def is_robot?
- request.user_agent =~ Split.configuration.robot_regex
+ defined?(request) && request.user_agent =~ Split.configuration.robot_regex
end
def is_ignored_ip_address?
return false if Split.configuration.ignore_ip_addresses.empty?
Split.configuration.ignore_ip_addresses.each do |ip|
- return true if request.ip == ip || (ip.class == Regexp && request.ip =~ ip)
+ return true if defined?(request) && (request.ip == ip || (ip.class == Regexp && request.ip =~ ip))
end
false
end
| 2 | Ensure request is defined before calling methods on it | 2 | .rb | rb | mit | splitrb/split |
10070941 | <NME> alternative_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/alternative"
describe Split::Alternative do
let(:alternative) {
Split::Alternative.new("Basket", "basket_text")
}
let(:alternative2) {
Split::Alternative.new("Cart", "basket_text")
}
let!(:experiment) {
Split::ExperimentCatalog.find_or_create({ "basket_text" => ["purchase", "refund"] }, "Basket", "Cart")
}
let(:goal1) { "purchase" }
let(:goal2) { "refund" }
it "should have goals" do
expect(alternative.goals).to eq(["purchase", "refund"])
end
it "should have and only return the name" do
expect(alternative.name).to eq("Basket")
end
describe "weights" do
it "should set the weights" do
experiment = Split::Experiment.new("basket_text", alternatives: [{ "Basket" => 0.6 }, { "Cart" => 0.4 }])
first = experiment.alternatives[0]
expect(first.name).to eq("Basket")
expect(first.weight).to eq(0.6)
second = experiment.alternatives[1]
expect(second.name).to eq("Cart")
expect(second.weight).to eq(0.4)
end
it "accepts probability on alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
]
}
}
experiment = Split::Experiment.new(:my_experiment)
first = experiment.alternatives[0]
expect(first.name).to eq("control_opt")
expect(first.weight).to eq(0.67)
second = experiment.alternatives[1]
expect(second.name).to eq("second_opt")
expect(second.weight).to eq(0.1)
end
it "accepts probability on some alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 34 },
"second_opt",
{ name: "third_opt", percent: 23 },
"fourth_opt",
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.34],
["second_opt", 0.215],
["third_opt", 0.23],
alternative.control?.should be_false
end
describe 'conversion rate' do
it "should be 0 if there are no conversions" do
alternative = Split::Alternative.new('Basket', 'basket_text')
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.18],
["second_opt", 0.18],
["third_opt", 0.64],
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
end
end
it "should have a default participation count of 0" do
expect(alternative.participant_count).to eq(0)
end
it "should have a default completed count of 0 for each goal" do
expect(alternative.completed_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
end
it "should belong to an experiment" do
expect(alternative.experiment.name).to eq(experiment.name)
end
it "should save to redis" do
alternative.save
expect(Split.redis.exists?("basket_text:Basket")).to be true
end
it "should increment participation count" do
old_participant_count = alternative.participant_count
alternative.increment_participation
expect(alternative.participant_count).to eq(old_participant_count+1)
end
it "should increment completed count for each goal" do
old_default_completed_count = alternative.completed_count
old_completed_count_for_goal1 = alternative.completed_count(goal1)
old_completed_count_for_goal2 = alternative.completed_count(goal2)
alternative.increment_completion
alternative.increment_completion(goal1)
alternative.increment_completion(goal2)
expect(alternative.completed_count).to eq(old_default_completed_count+1)
expect(alternative.completed_count(goal1)).to eq(old_completed_count_for_goal1+1)
expect(alternative.completed_count(goal2)).to eq(old_completed_count_for_goal2+1)
end
it "can be reset" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(5, goal2)
alternative.set_completed_count(6)
alternative.reset
expect(alternative.participant_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
expect(alternative.completed_count).to eq(0)
end
it "should know if it is the control of an experiment" do
expect(alternative.control?).to be_truthy
expect(alternative2.control?).to be_falsey
end
describe "unfinished_count" do
it "should be difference between participant and completed counts" do
alternative.increment_participation
expect(alternative.unfinished_count).to eq(alternative.participant_count)
end
it "should return the correct unfinished_count" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(3, goal2)
alternative.set_completed_count(2)
expect(alternative.unfinished_count).to eq(1)
end
end
describe "conversion rate" do
it "should be 0 if there are no conversions" do
expect(alternative.completed_count).to eq(0)
expect(alternative.conversion_rate).to eq(0)
end
it "calculate conversion rate" do
expect(alternative).to receive(:participant_count).exactly(6).times.and_return(10)
expect(alternative).to receive(:completed_count).and_return(4)
expect(alternative.conversion_rate).to eq(0.4)
expect(alternative).to receive(:completed_count).with(goal1).and_return(5)
expect(alternative.conversion_rate(goal1)).to eq(0.5)
expect(alternative).to receive(:completed_count).with(goal2).and_return(6)
expect(alternative.conversion_rate(goal2)).to eq(0.6)
end
end
describe "probability winner" do
before do
experiment.calc_winning_alternatives
end
it "should have a probability of being the winning alternative (p_winner)" do
expect(alternative.p_winner).not_to be_nil
end
it "should have a probability of being the winner for each goal" do
expect(alternative.p_winner(goal1)).not_to be_nil
end
it "should be possible to set the p_winner" do
alternative.set_p_winner(0.5)
expect(alternative.p_winner).to eq(0.5)
end
it "should be possible to set the p_winner for each goal" do
alternative.set_p_winner(0.5, goal1)
expect(alternative.p_winner(goal1)).to eq(0.5)
end
end
describe "z score" do
it "should return an error string when the control has 0 people" do
expect(alternative2.z_score).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal1)).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal2)).to eq("Needs 30+ participants.")
end
it "should return an error string when the data is skewed or incomplete as per the np > 5 test" do
control = experiment.control
control.participant_count = 100
control.set_completed_count(50)
alternative2.participant_count = 50
alternative2.set_completed_count(1)
expect(alternative2.z_score).to eq("Needs 5+ conversions.")
end
it "should return a float for a z_score given proper data" do
control = experiment.control
control.participant_count = 120
control.set_completed_count(20)
alternative2.participant_count = 100
alternative2.set_completed_count(25)
expect(alternative2.z_score).to be_kind_of(Float)
expect(alternative2.z_score).to_not eq(0)
end
it "should correctly calculate a z_score given proper data" do
control = experiment.control
control.participant_count = 126
control.set_completed_count(89)
alternative2.participant_count = 142
alternative2.set_completed_count(119)
expect(alternative2.z_score.round(2)).to eq(2.58)
end
it "should be N/A for the control" do
control = experiment.control
expect(control.z_score).to eq("N/A")
expect(control.z_score(goal1)).to eq("N/A")
expect(control.z_score(goal2)).to eq("N/A")
end
it "should not blow up for Conversion Rates > 1" do
control = experiment.control
control.participant_count = 3474
control.set_completed_count(4244)
alternative2.participant_count = 3434
alternative2.set_completed_count(4358)
expect { control.z_score }.not_to raise_error
expect { alternative2.z_score }.not_to raise_error
end
end
describe "extra_info" do
it "reads saved value of recorded_info in redis" do
saved_recorded_info = { "key_1" => 1, "key_2" => "2" }
Split.redis.hset "#{alternative.experiment_name}:#{alternative.name}", "recorded_info", saved_recorded_info.to_json
extra_info = alternative.extra_info
expect(extra_info).to eql(saved_recorded_info)
end
end
describe "record_extra_info" do
it "saves key" do
alternative.record_extra_info("signup", 1)
expect(alternative.extra_info["signup"]).to eql(1)
end
it "adds value to saved key's value second argument is number" do
alternative.record_extra_info("signup", 1)
alternative.record_extra_info("signup", 2)
expect(alternative.extra_info["signup"]).to eql(3)
end
it "sets saved's key value to the second argument if it's a string" do
alternative.record_extra_info("signup", "Value 1")
expect(alternative.extra_info["signup"]).to eql("Value 1")
alternative.record_extra_info("signup", "Value 2")
expect(alternative.extra_info["signup"]).to eql("Value 2")
end
end
end
<MSG> Extracted unfinished_count onto alternative
<DFF> @@ -79,6 +79,16 @@ describe Split::Alternative do
alternative.control?.should be_false
end
+ describe 'unfinished_count' do
+ it "should be difference between participant and completed counts" do
+ experiment = Split::Experiment.new('basket_text', 'Basket', "Cart")
+ experiment.save
+ alternative = Split::Alternative.new('Basket', 'basket_text')
+ alternative.increment_participation
+ alternative.unfinished_count.should eql(alternative.participant_count)
+ end
+ end
+
describe 'conversion rate' do
it "should be 0 if there are no conversions" do
alternative = Split::Alternative.new('Basket', 'basket_text')
| 10 | Extracted unfinished_count onto alternative | 0 | .rb | rb | mit | splitrb/split |
10070942 | <NME> alternative_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/alternative"
describe Split::Alternative do
let(:alternative) {
Split::Alternative.new("Basket", "basket_text")
}
let(:alternative2) {
Split::Alternative.new("Cart", "basket_text")
}
let!(:experiment) {
Split::ExperimentCatalog.find_or_create({ "basket_text" => ["purchase", "refund"] }, "Basket", "Cart")
}
let(:goal1) { "purchase" }
let(:goal2) { "refund" }
it "should have goals" do
expect(alternative.goals).to eq(["purchase", "refund"])
end
it "should have and only return the name" do
expect(alternative.name).to eq("Basket")
end
describe "weights" do
it "should set the weights" do
experiment = Split::Experiment.new("basket_text", alternatives: [{ "Basket" => 0.6 }, { "Cart" => 0.4 }])
first = experiment.alternatives[0]
expect(first.name).to eq("Basket")
expect(first.weight).to eq(0.6)
second = experiment.alternatives[1]
expect(second.name).to eq("Cart")
expect(second.weight).to eq(0.4)
end
it "accepts probability on alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
]
}
}
experiment = Split::Experiment.new(:my_experiment)
first = experiment.alternatives[0]
expect(first.name).to eq("control_opt")
expect(first.weight).to eq(0.67)
second = experiment.alternatives[1]
expect(second.name).to eq("second_opt")
expect(second.weight).to eq(0.1)
end
it "accepts probability on some alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 34 },
"second_opt",
{ name: "third_opt", percent: 23 },
"fourth_opt",
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.34],
["second_opt", 0.215],
["third_opt", 0.23],
alternative.control?.should be_false
end
describe 'conversion rate' do
it "should be 0 if there are no conversions" do
alternative = Split::Alternative.new('Basket', 'basket_text')
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.18],
["second_opt", 0.18],
["third_opt", 0.64],
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
end
end
it "should have a default participation count of 0" do
expect(alternative.participant_count).to eq(0)
end
it "should have a default completed count of 0 for each goal" do
expect(alternative.completed_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
end
it "should belong to an experiment" do
expect(alternative.experiment.name).to eq(experiment.name)
end
it "should save to redis" do
alternative.save
expect(Split.redis.exists?("basket_text:Basket")).to be true
end
it "should increment participation count" do
old_participant_count = alternative.participant_count
alternative.increment_participation
expect(alternative.participant_count).to eq(old_participant_count+1)
end
it "should increment completed count for each goal" do
old_default_completed_count = alternative.completed_count
old_completed_count_for_goal1 = alternative.completed_count(goal1)
old_completed_count_for_goal2 = alternative.completed_count(goal2)
alternative.increment_completion
alternative.increment_completion(goal1)
alternative.increment_completion(goal2)
expect(alternative.completed_count).to eq(old_default_completed_count+1)
expect(alternative.completed_count(goal1)).to eq(old_completed_count_for_goal1+1)
expect(alternative.completed_count(goal2)).to eq(old_completed_count_for_goal2+1)
end
it "can be reset" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(5, goal2)
alternative.set_completed_count(6)
alternative.reset
expect(alternative.participant_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
expect(alternative.completed_count).to eq(0)
end
it "should know if it is the control of an experiment" do
expect(alternative.control?).to be_truthy
expect(alternative2.control?).to be_falsey
end
describe "unfinished_count" do
it "should be difference between participant and completed counts" do
alternative.increment_participation
expect(alternative.unfinished_count).to eq(alternative.participant_count)
end
it "should return the correct unfinished_count" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(3, goal2)
alternative.set_completed_count(2)
expect(alternative.unfinished_count).to eq(1)
end
end
describe "conversion rate" do
it "should be 0 if there are no conversions" do
expect(alternative.completed_count).to eq(0)
expect(alternative.conversion_rate).to eq(0)
end
it "calculate conversion rate" do
expect(alternative).to receive(:participant_count).exactly(6).times.and_return(10)
expect(alternative).to receive(:completed_count).and_return(4)
expect(alternative.conversion_rate).to eq(0.4)
expect(alternative).to receive(:completed_count).with(goal1).and_return(5)
expect(alternative.conversion_rate(goal1)).to eq(0.5)
expect(alternative).to receive(:completed_count).with(goal2).and_return(6)
expect(alternative.conversion_rate(goal2)).to eq(0.6)
end
end
describe "probability winner" do
before do
experiment.calc_winning_alternatives
end
it "should have a probability of being the winning alternative (p_winner)" do
expect(alternative.p_winner).not_to be_nil
end
it "should have a probability of being the winner for each goal" do
expect(alternative.p_winner(goal1)).not_to be_nil
end
it "should be possible to set the p_winner" do
alternative.set_p_winner(0.5)
expect(alternative.p_winner).to eq(0.5)
end
it "should be possible to set the p_winner for each goal" do
alternative.set_p_winner(0.5, goal1)
expect(alternative.p_winner(goal1)).to eq(0.5)
end
end
describe "z score" do
it "should return an error string when the control has 0 people" do
expect(alternative2.z_score).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal1)).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal2)).to eq("Needs 30+ participants.")
end
it "should return an error string when the data is skewed or incomplete as per the np > 5 test" do
control = experiment.control
control.participant_count = 100
control.set_completed_count(50)
alternative2.participant_count = 50
alternative2.set_completed_count(1)
expect(alternative2.z_score).to eq("Needs 5+ conversions.")
end
it "should return a float for a z_score given proper data" do
control = experiment.control
control.participant_count = 120
control.set_completed_count(20)
alternative2.participant_count = 100
alternative2.set_completed_count(25)
expect(alternative2.z_score).to be_kind_of(Float)
expect(alternative2.z_score).to_not eq(0)
end
it "should correctly calculate a z_score given proper data" do
control = experiment.control
control.participant_count = 126
control.set_completed_count(89)
alternative2.participant_count = 142
alternative2.set_completed_count(119)
expect(alternative2.z_score.round(2)).to eq(2.58)
end
it "should be N/A for the control" do
control = experiment.control
expect(control.z_score).to eq("N/A")
expect(control.z_score(goal1)).to eq("N/A")
expect(control.z_score(goal2)).to eq("N/A")
end
it "should not blow up for Conversion Rates > 1" do
control = experiment.control
control.participant_count = 3474
control.set_completed_count(4244)
alternative2.participant_count = 3434
alternative2.set_completed_count(4358)
expect { control.z_score }.not_to raise_error
expect { alternative2.z_score }.not_to raise_error
end
end
describe "extra_info" do
it "reads saved value of recorded_info in redis" do
saved_recorded_info = { "key_1" => 1, "key_2" => "2" }
Split.redis.hset "#{alternative.experiment_name}:#{alternative.name}", "recorded_info", saved_recorded_info.to_json
extra_info = alternative.extra_info
expect(extra_info).to eql(saved_recorded_info)
end
end
describe "record_extra_info" do
it "saves key" do
alternative.record_extra_info("signup", 1)
expect(alternative.extra_info["signup"]).to eql(1)
end
it "adds value to saved key's value second argument is number" do
alternative.record_extra_info("signup", 1)
alternative.record_extra_info("signup", 2)
expect(alternative.extra_info["signup"]).to eql(3)
end
it "sets saved's key value to the second argument if it's a string" do
alternative.record_extra_info("signup", "Value 1")
expect(alternative.extra_info["signup"]).to eql("Value 1")
alternative.record_extra_info("signup", "Value 2")
expect(alternative.extra_info["signup"]).to eql("Value 2")
end
end
end
<MSG> Extracted unfinished_count onto alternative
<DFF> @@ -79,6 +79,16 @@ describe Split::Alternative do
alternative.control?.should be_false
end
+ describe 'unfinished_count' do
+ it "should be difference between participant and completed counts" do
+ experiment = Split::Experiment.new('basket_text', 'Basket', "Cart")
+ experiment.save
+ alternative = Split::Alternative.new('Basket', 'basket_text')
+ alternative.increment_participation
+ alternative.unfinished_count.should eql(alternative.participant_count)
+ end
+ end
+
describe 'conversion rate' do
it "should be 0 if there are no conversions" do
alternative = Split::Alternative.new('Basket', 'basket_text')
| 10 | Extracted unfinished_count onto alternative | 0 | .rb | rb | mit | splitrb/split |
10070943 | <NME> alternative_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/alternative"
describe Split::Alternative do
let(:alternative) {
Split::Alternative.new("Basket", "basket_text")
}
let(:alternative2) {
Split::Alternative.new("Cart", "basket_text")
}
let!(:experiment) {
Split::ExperimentCatalog.find_or_create({ "basket_text" => ["purchase", "refund"] }, "Basket", "Cart")
}
let(:goal1) { "purchase" }
let(:goal2) { "refund" }
it "should have goals" do
expect(alternative.goals).to eq(["purchase", "refund"])
end
it "should have and only return the name" do
expect(alternative.name).to eq("Basket")
end
describe "weights" do
it "should set the weights" do
experiment = Split::Experiment.new("basket_text", alternatives: [{ "Basket" => 0.6 }, { "Cart" => 0.4 }])
first = experiment.alternatives[0]
expect(first.name).to eq("Basket")
expect(first.weight).to eq(0.6)
second = experiment.alternatives[1]
expect(second.name).to eq("Cart")
expect(second.weight).to eq(0.4)
end
it "accepts probability on alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 67 },
{ name: "second_opt", percent: 10 },
{ name: "third_opt", percent: 23 },
]
}
}
experiment = Split::Experiment.new(:my_experiment)
first = experiment.alternatives[0]
expect(first.name).to eq("control_opt")
expect(first.weight).to eq(0.67)
second = experiment.alternatives[1]
expect(second.name).to eq("second_opt")
expect(second.weight).to eq(0.1)
end
it "accepts probability on some alternatives" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt", percent: 34 },
"second_opt",
{ name: "third_opt", percent: 23 },
"fourth_opt",
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.34],
["second_opt", 0.215],
["third_opt", 0.23],
alternative.control?.should be_false
end
describe 'conversion rate' do
it "should be 0 if there are no conversions" do
alternative = Split::Alternative.new('Basket', 'basket_text')
],
}
}
experiment = Split::Experiment.new(:my_experiment)
alts = experiment.alternatives
[
["control_opt", 0.18],
["second_opt", 0.18],
["third_opt", 0.64],
].each do |h|
name, weight = h
alt = alts.shift
expect(alt.name).to eq(name)
expect(alt.weight).to eq(weight)
end
end
end
it "should have a default participation count of 0" do
expect(alternative.participant_count).to eq(0)
end
it "should have a default completed count of 0 for each goal" do
expect(alternative.completed_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
end
it "should belong to an experiment" do
expect(alternative.experiment.name).to eq(experiment.name)
end
it "should save to redis" do
alternative.save
expect(Split.redis.exists?("basket_text:Basket")).to be true
end
it "should increment participation count" do
old_participant_count = alternative.participant_count
alternative.increment_participation
expect(alternative.participant_count).to eq(old_participant_count+1)
end
it "should increment completed count for each goal" do
old_default_completed_count = alternative.completed_count
old_completed_count_for_goal1 = alternative.completed_count(goal1)
old_completed_count_for_goal2 = alternative.completed_count(goal2)
alternative.increment_completion
alternative.increment_completion(goal1)
alternative.increment_completion(goal2)
expect(alternative.completed_count).to eq(old_default_completed_count+1)
expect(alternative.completed_count(goal1)).to eq(old_completed_count_for_goal1+1)
expect(alternative.completed_count(goal2)).to eq(old_completed_count_for_goal2+1)
end
it "can be reset" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(5, goal2)
alternative.set_completed_count(6)
alternative.reset
expect(alternative.participant_count).to eq(0)
expect(alternative.completed_count(goal1)).to eq(0)
expect(alternative.completed_count(goal2)).to eq(0)
expect(alternative.completed_count).to eq(0)
end
it "should know if it is the control of an experiment" do
expect(alternative.control?).to be_truthy
expect(alternative2.control?).to be_falsey
end
describe "unfinished_count" do
it "should be difference between participant and completed counts" do
alternative.increment_participation
expect(alternative.unfinished_count).to eq(alternative.participant_count)
end
it "should return the correct unfinished_count" do
alternative.participant_count = 10
alternative.set_completed_count(4, goal1)
alternative.set_completed_count(3, goal2)
alternative.set_completed_count(2)
expect(alternative.unfinished_count).to eq(1)
end
end
describe "conversion rate" do
it "should be 0 if there are no conversions" do
expect(alternative.completed_count).to eq(0)
expect(alternative.conversion_rate).to eq(0)
end
it "calculate conversion rate" do
expect(alternative).to receive(:participant_count).exactly(6).times.and_return(10)
expect(alternative).to receive(:completed_count).and_return(4)
expect(alternative.conversion_rate).to eq(0.4)
expect(alternative).to receive(:completed_count).with(goal1).and_return(5)
expect(alternative.conversion_rate(goal1)).to eq(0.5)
expect(alternative).to receive(:completed_count).with(goal2).and_return(6)
expect(alternative.conversion_rate(goal2)).to eq(0.6)
end
end
describe "probability winner" do
before do
experiment.calc_winning_alternatives
end
it "should have a probability of being the winning alternative (p_winner)" do
expect(alternative.p_winner).not_to be_nil
end
it "should have a probability of being the winner for each goal" do
expect(alternative.p_winner(goal1)).not_to be_nil
end
it "should be possible to set the p_winner" do
alternative.set_p_winner(0.5)
expect(alternative.p_winner).to eq(0.5)
end
it "should be possible to set the p_winner for each goal" do
alternative.set_p_winner(0.5, goal1)
expect(alternative.p_winner(goal1)).to eq(0.5)
end
end
describe "z score" do
it "should return an error string when the control has 0 people" do
expect(alternative2.z_score).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal1)).to eq("Needs 30+ participants.")
expect(alternative2.z_score(goal2)).to eq("Needs 30+ participants.")
end
it "should return an error string when the data is skewed or incomplete as per the np > 5 test" do
control = experiment.control
control.participant_count = 100
control.set_completed_count(50)
alternative2.participant_count = 50
alternative2.set_completed_count(1)
expect(alternative2.z_score).to eq("Needs 5+ conversions.")
end
it "should return a float for a z_score given proper data" do
control = experiment.control
control.participant_count = 120
control.set_completed_count(20)
alternative2.participant_count = 100
alternative2.set_completed_count(25)
expect(alternative2.z_score).to be_kind_of(Float)
expect(alternative2.z_score).to_not eq(0)
end
it "should correctly calculate a z_score given proper data" do
control = experiment.control
control.participant_count = 126
control.set_completed_count(89)
alternative2.participant_count = 142
alternative2.set_completed_count(119)
expect(alternative2.z_score.round(2)).to eq(2.58)
end
it "should be N/A for the control" do
control = experiment.control
expect(control.z_score).to eq("N/A")
expect(control.z_score(goal1)).to eq("N/A")
expect(control.z_score(goal2)).to eq("N/A")
end
it "should not blow up for Conversion Rates > 1" do
control = experiment.control
control.participant_count = 3474
control.set_completed_count(4244)
alternative2.participant_count = 3434
alternative2.set_completed_count(4358)
expect { control.z_score }.not_to raise_error
expect { alternative2.z_score }.not_to raise_error
end
end
describe "extra_info" do
it "reads saved value of recorded_info in redis" do
saved_recorded_info = { "key_1" => 1, "key_2" => "2" }
Split.redis.hset "#{alternative.experiment_name}:#{alternative.name}", "recorded_info", saved_recorded_info.to_json
extra_info = alternative.extra_info
expect(extra_info).to eql(saved_recorded_info)
end
end
describe "record_extra_info" do
it "saves key" do
alternative.record_extra_info("signup", 1)
expect(alternative.extra_info["signup"]).to eql(1)
end
it "adds value to saved key's value second argument is number" do
alternative.record_extra_info("signup", 1)
alternative.record_extra_info("signup", 2)
expect(alternative.extra_info["signup"]).to eql(3)
end
it "sets saved's key value to the second argument if it's a string" do
alternative.record_extra_info("signup", "Value 1")
expect(alternative.extra_info["signup"]).to eql("Value 1")
alternative.record_extra_info("signup", "Value 2")
expect(alternative.extra_info["signup"]).to eql("Value 2")
end
end
end
<MSG> Extracted unfinished_count onto alternative
<DFF> @@ -79,6 +79,16 @@ describe Split::Alternative do
alternative.control?.should be_false
end
+ describe 'unfinished_count' do
+ it "should be difference between participant and completed counts" do
+ experiment = Split::Experiment.new('basket_text', 'Basket', "Cart")
+ experiment.save
+ alternative = Split::Alternative.new('Basket', 'basket_text')
+ alternative.increment_participation
+ alternative.unfinished_count.should eql(alternative.participant_count)
+ end
+ end
+
describe 'conversion rate' do
it "should be 0 if there are no conversions" do
alternative = Split::Alternative.new('Basket', 'basket_text')
| 10 | Extracted unfinished_count onto alternative | 0 | .rb | rb | mit | splitrb/split |
10070944 | <NME> split.gemspec
<BEF> # -*- encoding: utf-8 -*-
# frozen_string_literal: true
$:.push File.expand_path("../lib", __FILE__)
require "split/version"
Gem::Specification.new do |s|
s.name = "split"
s.version = Split::VERSION
s.platform = Gem::Platform::RUBY
s.authors = ["Andrew Nesbitt"]
s.licenses = ["MIT"]
s.email = ["[email protected]"]
s.homepage = "https://github.com/splitrb/split"
s.summary = "Rack based split testing framework"
s.metadata = {
"homepage_uri" => "https://github.com/splitrb/split",
"changelog_uri" => "https://github.com/splitrb/split/blob/main/CHANGELOG.md",
"source_code_uri" => "https://github.com/splitrb/split",
"mailing_list_uri" => "https://groups.google.com/d/forum/split-ruby"
}
s.required_ruby_version = '>= 1.9.2'
s.rubyforge_project = "split"
s.files = `git ls-files`.split("\n")
s.test_files = `git ls-files -- {test,spec,features}/*`.split("\n")
s.require_paths = ["lib"]
s.add_dependency "redis", ">= 4.2"
s.add_dependency "sinatra", ">= 1.2.6"
s.add_dependency "rubystats", ">= 0.3.0"
s.add_development_dependency "bundler", ">= 1.17"
s.add_development_dependency "simplecov", "~> 0.15"
s.add_development_dependency "rack-test", "~> 2.0"
s.add_development_dependency "rake", "~> 13"
s.add_development_dependency "rspec", "~> 3.7"
s.add_development_dependency "pry", "~> 0.10"
s.add_development_dependency "rails", ">= 5.0"
end
<MSG> CI: Change and test earliest supported Ruby version (1.9.2 -> 2.2.0) (#498)
* gemspec: Change required Ruby version from 1.9.2 to 2.2.0
There are some incompatibilities between Split's dependencies and
earlier versions of Ruby (see
https://github.com/splitrb/split/issues/494#issuecomment-325522476).
2.2.0 is a relatively old version of Ruby that can run Split with
minimal code changes.
* Fix Ruby syntax incompatibility with version < 2.3
`Hash#dig` and `&.` are available only in 2.3+, but Split is supposed to
be compatible with Ruby 2.2.2+.
* CI: Add Rails 5.1 Gemfile to build matrix
<DFF> @@ -21,7 +21,7 @@ Gem::Specification.new do |s|
"mailing_list_uri" => "https://groups.google.com/d/forum/split-ruby"
}
- s.required_ruby_version = '>= 1.9.2'
+ s.required_ruby_version = '>= 2.2.0'
s.rubyforge_project = "split"
| 1 | CI: Change and test earliest supported Ruby version (1.9.2 -> 2.2.0) (#498) | 1 | .gemspec | gemspec | mit | splitrb/split |
10070945 | <NME> split.gemspec
<BEF> # -*- encoding: utf-8 -*-
# frozen_string_literal: true
$:.push File.expand_path("../lib", __FILE__)
require "split/version"
Gem::Specification.new do |s|
s.name = "split"
s.version = Split::VERSION
s.platform = Gem::Platform::RUBY
s.authors = ["Andrew Nesbitt"]
s.licenses = ["MIT"]
s.email = ["[email protected]"]
s.homepage = "https://github.com/splitrb/split"
s.summary = "Rack based split testing framework"
s.metadata = {
"homepage_uri" => "https://github.com/splitrb/split",
"changelog_uri" => "https://github.com/splitrb/split/blob/main/CHANGELOG.md",
"source_code_uri" => "https://github.com/splitrb/split",
"mailing_list_uri" => "https://groups.google.com/d/forum/split-ruby"
}
s.required_ruby_version = '>= 1.9.2'
s.rubyforge_project = "split"
s.files = `git ls-files`.split("\n")
s.test_files = `git ls-files -- {test,spec,features}/*`.split("\n")
s.require_paths = ["lib"]
s.add_dependency "redis", ">= 4.2"
s.add_dependency "sinatra", ">= 1.2.6"
s.add_dependency "rubystats", ">= 0.3.0"
s.add_development_dependency "bundler", ">= 1.17"
s.add_development_dependency "simplecov", "~> 0.15"
s.add_development_dependency "rack-test", "~> 2.0"
s.add_development_dependency "rake", "~> 13"
s.add_development_dependency "rspec", "~> 3.7"
s.add_development_dependency "pry", "~> 0.10"
s.add_development_dependency "rails", ">= 5.0"
end
<MSG> CI: Change and test earliest supported Ruby version (1.9.2 -> 2.2.0) (#498)
* gemspec: Change required Ruby version from 1.9.2 to 2.2.0
There are some incompatibilities between Split's dependencies and
earlier versions of Ruby (see
https://github.com/splitrb/split/issues/494#issuecomment-325522476).
2.2.0 is a relatively old version of Ruby that can run Split with
minimal code changes.
* Fix Ruby syntax incompatibility with version < 2.3
`Hash#dig` and `&.` are available only in 2.3+, but Split is supposed to
be compatible with Ruby 2.2.2+.
* CI: Add Rails 5.1 Gemfile to build matrix
<DFF> @@ -21,7 +21,7 @@ Gem::Specification.new do |s|
"mailing_list_uri" => "https://groups.google.com/d/forum/split-ruby"
}
- s.required_ruby_version = '>= 1.9.2'
+ s.required_ruby_version = '>= 2.2.0'
s.rubyforge_project = "split"
| 1 | CI: Change and test earliest supported Ruby version (1.9.2 -> 2.2.0) (#498) | 1 | .gemspec | gemspec | mit | splitrb/split |
10070946 | <NME> split.gemspec
<BEF> # -*- encoding: utf-8 -*-
# frozen_string_literal: true
$:.push File.expand_path("../lib", __FILE__)
require "split/version"
Gem::Specification.new do |s|
s.name = "split"
s.version = Split::VERSION
s.platform = Gem::Platform::RUBY
s.authors = ["Andrew Nesbitt"]
s.licenses = ["MIT"]
s.email = ["[email protected]"]
s.homepage = "https://github.com/splitrb/split"
s.summary = "Rack based split testing framework"
s.metadata = {
"homepage_uri" => "https://github.com/splitrb/split",
"changelog_uri" => "https://github.com/splitrb/split/blob/main/CHANGELOG.md",
"source_code_uri" => "https://github.com/splitrb/split",
"mailing_list_uri" => "https://groups.google.com/d/forum/split-ruby"
}
s.required_ruby_version = '>= 1.9.2'
s.rubyforge_project = "split"
s.files = `git ls-files`.split("\n")
s.test_files = `git ls-files -- {test,spec,features}/*`.split("\n")
s.require_paths = ["lib"]
s.add_dependency "redis", ">= 4.2"
s.add_dependency "sinatra", ">= 1.2.6"
s.add_dependency "rubystats", ">= 0.3.0"
s.add_development_dependency "bundler", ">= 1.17"
s.add_development_dependency "simplecov", "~> 0.15"
s.add_development_dependency "rack-test", "~> 2.0"
s.add_development_dependency "rake", "~> 13"
s.add_development_dependency "rspec", "~> 3.7"
s.add_development_dependency "pry", "~> 0.10"
s.add_development_dependency "rails", ">= 5.0"
end
<MSG> CI: Change and test earliest supported Ruby version (1.9.2 -> 2.2.0) (#498)
* gemspec: Change required Ruby version from 1.9.2 to 2.2.0
There are some incompatibilities between Split's dependencies and
earlier versions of Ruby (see
https://github.com/splitrb/split/issues/494#issuecomment-325522476).
2.2.0 is a relatively old version of Ruby that can run Split with
minimal code changes.
* Fix Ruby syntax incompatibility with version < 2.3
`Hash#dig` and `&.` are available only in 2.3+, but Split is supposed to
be compatible with Ruby 2.2.2+.
* CI: Add Rails 5.1 Gemfile to build matrix
<DFF> @@ -21,7 +21,7 @@ Gem::Specification.new do |s|
"mailing_list_uri" => "https://groups.google.com/d/forum/split-ruby"
}
- s.required_ruby_version = '>= 1.9.2'
+ s.required_ruby_version = '>= 2.2.0'
s.rubyforge_project = "split"
| 1 | CI: Change and test earliest supported Ruby version (1.9.2 -> 2.2.0) (#498) | 1 | .gemspec | gemspec | mit | splitrb/split |
10070947 | <NME> index.ts
<BEF> ///<reference path="../typings/angularjs/angular.d.ts"/>
import { smButtonModule } from './elements/button/button';
import { smRatingModule } from './modules/rating/rating';
((): void => {
'use strict';
angular
.module('semantic.ui', [
smButtonModule.name,
smRatingModule.name
]);
})();
<MSG> Merge pull request #52 from frankadrian/refactor/divider_component
Refactor divider component
<DFF> @@ -2,6 +2,7 @@
import { smButtonModule } from './elements/button/button';
import { smRatingModule } from './modules/rating/rating';
+import { smDividerModule } from './elements/divider/divider';
((): void => {
'use strict';
@@ -9,7 +10,8 @@ import { smRatingModule } from './modules/rating/rating';
angular
.module('semantic.ui', [
smButtonModule.name,
- smRatingModule.name
+ smRatingModule.name,
+ smDividerModule.name
]);
})();
| 3 | Merge pull request #52 from frankadrian/refactor/divider_component | 1 | .ts | ts | mit | Semantic-Org/Semantic-UI-Angular |
10070948 | <NME> index.ts
<BEF> ///<reference path="../typings/angularjs/angular.d.ts"/>
import { smButtonModule } from './elements/button/button';
import { smRatingModule } from './modules/rating/rating';
((): void => {
'use strict';
angular
.module('semantic.ui', [
smButtonModule.name,
smRatingModule.name
]);
})();
<MSG> Merge pull request #52 from frankadrian/refactor/divider_component
Refactor divider component
<DFF> @@ -2,6 +2,7 @@
import { smButtonModule } from './elements/button/button';
import { smRatingModule } from './modules/rating/rating';
+import { smDividerModule } from './elements/divider/divider';
((): void => {
'use strict';
@@ -9,7 +10,8 @@ import { smRatingModule } from './modules/rating/rating';
angular
.module('semantic.ui', [
smButtonModule.name,
- smRatingModule.name
+ smRatingModule.name,
+ smDividerModule.name
]);
})();
| 3 | Merge pull request #52 from frankadrian/refactor/divider_component | 1 | .ts | ts | mit | Semantic-Org/Semantic-UI-Angular |
10070949 | <NME> index.ts
<BEF> ///<reference path="../typings/angularjs/angular.d.ts"/>
import { smButtonModule } from './elements/button/button';
import { smRatingModule } from './modules/rating/rating';
((): void => {
'use strict';
angular
.module('semantic.ui', [
smButtonModule.name,
smRatingModule.name
]);
})();
<MSG> Merge pull request #52 from frankadrian/refactor/divider_component
Refactor divider component
<DFF> @@ -2,6 +2,7 @@
import { smButtonModule } from './elements/button/button';
import { smRatingModule } from './modules/rating/rating';
+import { smDividerModule } from './elements/divider/divider';
((): void => {
'use strict';
@@ -9,7 +10,8 @@ import { smRatingModule } from './modules/rating/rating';
angular
.module('semantic.ui', [
smButtonModule.name,
- smRatingModule.name
+ smRatingModule.name,
+ smDividerModule.name
]);
})();
| 3 | Merge pull request #52 from frankadrian/refactor/divider_component | 1 | .ts | ts | mit | Semantic-Org/Semantic-UI-Angular |
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