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10071750 | <NME> README.md
<BEF> jQuery Meow
===========
A plugin to provide Growl-like notifications. Will support bindings for various jQuery events and ability to 'meow' the content of a bound element (e.g. a Rails flash on load) or a message passed as an argument (e.g. button clicks).
[](http://coderwall.com/zacstewart)
</tr>
</table>
<MSG> Add documentation to README
<DFF> @@ -3,4 +3,108 @@ jQuery Meow
A plugin to provide Growl-like notifications. Will support bindings for various jQuery events and ability to 'meow' the content of a bound element (e.g. a Rails flash on load) or a message passed as an argument (e.g. button clicks).
-[](http://coderwall.com/zacstewart)
\ No newline at end of file
+[](http://coderwall.com/zacstewart)
+
+## Usage example
+
+```javascript
+var options = {
+ title: 'Meow Example',
+ message: 'Hello, World!',
+};
+
+$.meow(options);
+```
+## Options
+<table>
+ <tr>
+ <th>Key</th>
+ <th>Type</th>
+ <th>Default</th>
+ <th>Description</th>
+ </tr>
+ <tr>
+ <td>message</td>
+ <td>String, Object</td>
+ <td>null</td>
+ <td>Either a string or a jQuery selected element. If it's an element, Meow will use its value, innerHTML or innerText depending on its type.</td>
+ </tr>
+ <tr>
+ <td>title</td>
+ <td>String</td>
+ <td>null</td>
+ <td>If a string is given, the meow's title will reflect it. However, if you do no set this and use a selector element in <code>message</code>, it will default to the <code>title</code> attribute of that element if available.</td>
+ </tr>
+ <tr>
+ <td>icon</td>
+ <td>String</td>
+ <td>null</td>
+ <td>Sets the image URL for the icon</td>
+ </tr>
+ <tr>
+ <td>duration</td>
+ <td>Number</td>
+ <td>5000</td>
+ <td>Sets the duration of of the meow in milliseconds. Any positive, numeric value (including <code>Infinity</code>) is acceptable.</td>
+ </tr>
+ <tr>
+ <td>sticky</td>
+ <td>Boolean</td>
+ <td>false</td>
+ <td>Sets the meow to never time out. Has the same effect as setting duration to <code>Infinity</code>.</td>
+ </tr>
+ <tr>
+ <td>closeable</td>
+ <td>Boolean</td>
+ <td>true</td>
+ <td>Determines whether the meow will have a close (×) button. If <code>false</code>, yout must rely on the duration timeout to remove the meow.</td>
+ </tr>
+ <tr>
+ <td>container</td>
+ <td>String</td>
+ <td>null</td>
+ <td>Sets the root element the meow should be contained within. Be default, meows will be put in an auto-generated container.</td>
+ </tr>
+ <tr>
+ <td>beforeCreateFirst</td>
+ <td>Function</td>
+ <td>null</td>
+ <td>Gets called just before the first meow on the screen is created.</td>
+ </tr>
+ <tr>
+ <td>beforeCreate</td>
+ <td>Function</td>
+ <td>null</td>
+ <td>Gets called just before any meow is created.</td>
+ </tr>
+ <tr>
+ <td>afterCreate</td>
+ <td>Function</td>
+ <td>null</td>
+ <td>Gets called right after a meow is created.</td>
+ </tr>
+ <tr>
+ <td>onTimeout</td>
+ <td>Function</td>
+ <td>null</td>
+ <td>Gets called whenever a meow times out.</td>
+ </tr>
+ <tr>
+ <td>beforeDestroy</td>
+ <td>Function</td>
+ <td>null</td>
+ <td>Gets called just before a meow gets destroyed.</td>
+ </tr>
+ <tr>
+ <td>afterDestroy</td>
+ <td>Function</td>
+ <td>null</td>
+ <td>Gets called right after a meow gets destroyed.</td>
+ </tr>
+ <tr>
+ <td>afterDestroyLast</td>
+ <td>Function</td>
+ <td>null</td>
+ <td>Gets called after the last meow on the screen is destroyed.</td>
+ </tr>
+</table>
| 105 | Add documentation to README | 1 | .md | md | mit | zacstewart/Meow |
10071751 | <NME> README.md
<BEF> jQuery Meow
===========
A plugin to provide Growl-like notifications. Will support bindings for various jQuery events and ability to 'meow' the content of a bound element (e.g. a Rails flash on load) or a message passed as an argument (e.g. button clicks).
[](http://coderwall.com/zacstewart)
</tr>
</table>
<MSG> Add documentation to README
<DFF> @@ -3,4 +3,108 @@ jQuery Meow
A plugin to provide Growl-like notifications. Will support bindings for various jQuery events and ability to 'meow' the content of a bound element (e.g. a Rails flash on load) or a message passed as an argument (e.g. button clicks).
-[](http://coderwall.com/zacstewart)
\ No newline at end of file
+[](http://coderwall.com/zacstewart)
+
+## Usage example
+
+```javascript
+var options = {
+ title: 'Meow Example',
+ message: 'Hello, World!',
+};
+
+$.meow(options);
+```
+## Options
+<table>
+ <tr>
+ <th>Key</th>
+ <th>Type</th>
+ <th>Default</th>
+ <th>Description</th>
+ </tr>
+ <tr>
+ <td>message</td>
+ <td>String, Object</td>
+ <td>null</td>
+ <td>Either a string or a jQuery selected element. If it's an element, Meow will use its value, innerHTML or innerText depending on its type.</td>
+ </tr>
+ <tr>
+ <td>title</td>
+ <td>String</td>
+ <td>null</td>
+ <td>If a string is given, the meow's title will reflect it. However, if you do no set this and use a selector element in <code>message</code>, it will default to the <code>title</code> attribute of that element if available.</td>
+ </tr>
+ <tr>
+ <td>icon</td>
+ <td>String</td>
+ <td>null</td>
+ <td>Sets the image URL for the icon</td>
+ </tr>
+ <tr>
+ <td>duration</td>
+ <td>Number</td>
+ <td>5000</td>
+ <td>Sets the duration of of the meow in milliseconds. Any positive, numeric value (including <code>Infinity</code>) is acceptable.</td>
+ </tr>
+ <tr>
+ <td>sticky</td>
+ <td>Boolean</td>
+ <td>false</td>
+ <td>Sets the meow to never time out. Has the same effect as setting duration to <code>Infinity</code>.</td>
+ </tr>
+ <tr>
+ <td>closeable</td>
+ <td>Boolean</td>
+ <td>true</td>
+ <td>Determines whether the meow will have a close (×) button. If <code>false</code>, yout must rely on the duration timeout to remove the meow.</td>
+ </tr>
+ <tr>
+ <td>container</td>
+ <td>String</td>
+ <td>null</td>
+ <td>Sets the root element the meow should be contained within. Be default, meows will be put in an auto-generated container.</td>
+ </tr>
+ <tr>
+ <td>beforeCreateFirst</td>
+ <td>Function</td>
+ <td>null</td>
+ <td>Gets called just before the first meow on the screen is created.</td>
+ </tr>
+ <tr>
+ <td>beforeCreate</td>
+ <td>Function</td>
+ <td>null</td>
+ <td>Gets called just before any meow is created.</td>
+ </tr>
+ <tr>
+ <td>afterCreate</td>
+ <td>Function</td>
+ <td>null</td>
+ <td>Gets called right after a meow is created.</td>
+ </tr>
+ <tr>
+ <td>onTimeout</td>
+ <td>Function</td>
+ <td>null</td>
+ <td>Gets called whenever a meow times out.</td>
+ </tr>
+ <tr>
+ <td>beforeDestroy</td>
+ <td>Function</td>
+ <td>null</td>
+ <td>Gets called just before a meow gets destroyed.</td>
+ </tr>
+ <tr>
+ <td>afterDestroy</td>
+ <td>Function</td>
+ <td>null</td>
+ <td>Gets called right after a meow gets destroyed.</td>
+ </tr>
+ <tr>
+ <td>afterDestroyLast</td>
+ <td>Function</td>
+ <td>null</td>
+ <td>Gets called after the last meow on the screen is destroyed.</td>
+ </tr>
+</table>
| 105 | Add documentation to README | 1 | .md | md | mit | zacstewart/Meow |
10071752 | <NME> user_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/experiment_catalog"
require "split/experiment"
require "split/user"
describe Split::User do
let(:user_keys) { { "link_color" => "blue" } }
let(:context) { double(session: { split: user_keys }) }
let(:experiment) { Split::Experiment.new("link_color") }
before(:each) do
@subject = described_class.new(context)
end
end
context '#cleanup_old_versions!' do
let(:user_keys) { { 'link_color:1' => 'blue' } }
it 'removes key if old experiment is found' do
@subject.cleanup_old_versions!(experiment)
expect(@subject.keys).to be_empty
end
end
end
context "#cleanup_old_experiments!" do
it "removes key if experiment is not found" do
@subject.cleanup_old_experiments!
expect(@subject.keys).to be_empty
end
it "removes key if experiment has a winner" do
allow(Split::ExperimentCatalog).to receive(:find).with("link_color").and_return(experiment)
allow(experiment).to receive(:start_time).and_return(Date.today)
allow(experiment).to receive(:has_winner?).and_return(true)
@subject.cleanup_old_experiments!
expect(@subject.keys).to be_empty
end
it "removes key if experiment has not started yet" do
allow(Split::ExperimentCatalog).to receive(:find).with("link_color").and_return(experiment)
allow(experiment).to receive(:has_winner?).and_return(false)
@subject.cleanup_old_experiments!
expect(@subject.keys).to be_empty
end
context "with finished key" do
let(:user_keys) { { "link_color" => "blue", "link_color:finished" => true } }
it "does not remove finished key for experiment without a winner" do
allow(Split::ExperimentCatalog).to receive(:find).with("link_color").and_return(experiment)
allow(Split::ExperimentCatalog).to receive(:find).with("link_color:finished").and_return(nil)
allow(experiment).to receive(:start_time).and_return(Date.today)
allow(experiment).to receive(:has_winner?).and_return(false)
@subject.cleanup_old_experiments!
expect(@subject.keys).to include("link_color")
expect(@subject.keys).to include("link_color:finished")
end
end
context "when already cleaned up" do
before do
@subject.cleanup_old_experiments!
end
it "does not clean up again" do
expect(@subject).to_not receive(:keys_without_finished)
@subject.cleanup_old_experiments!
end
end
end
context "allows user to be loaded from adapter" do
it "loads user from adapter (RedisAdapter)" do
user = Split::Persistence::RedisAdapter.new(nil, 112233)
user["foo"] = "bar"
ab_user = Split::User.find(112233, :redis)
expect(ab_user["foo"]).to eql("bar")
end
it "returns nil if adapter does not implement a finder method" do
ab_user = Split::User.find(112233, :dual_adapter)
expect(ab_user).to be_nil
end
end
context "instantiated with custom adapter" do
let(:custom_adapter) { double(:persistence_adapter) }
before do
@subject = described_class.new(context, custom_adapter)
end
it "sets user to the custom adapter" do
expect(@subject.user).to eq(custom_adapter)
end
end
end
<MSG> Fix cleanup_old_versions! misbehaviour
<DFF> @@ -17,11 +17,25 @@ describe Split::User do
end
context '#cleanup_old_versions!' do
- let(:user_keys) { { 'link_color:1' => 'blue' } }
+ let(:experiment_version) { "#{experiment.name}:1" }
+ let(:second_experiment_version) { "#{experiment.name}_another:1" }
+ let(:third_experiment_version) { "variation_of_#{experiment.name}:1" }
+ let(:user_keys) do
+ {
+ experiment_version => 'blue',
+ second_experiment_version => 'red',
+ third_experiment_version => 'yellow'
+ }
+ end
+
+ before(:each) { @subject.cleanup_old_versions!(experiment) }
it 'removes key if old experiment is found' do
- @subject.cleanup_old_versions!(experiment)
- expect(@subject.keys).to be_empty
+ expect(@subject.keys).not_to include(experiment_version)
+ end
+
+ it 'does not remove other keys' do
+ expect(@subject.keys).to include(second_experiment_version, third_experiment_version)
end
end
| 17 | Fix cleanup_old_versions! misbehaviour | 3 | .rb | rb | mit | splitrb/split |
10071753 | <NME> user_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/experiment_catalog"
require "split/experiment"
require "split/user"
describe Split::User do
let(:user_keys) { { "link_color" => "blue" } }
let(:context) { double(session: { split: user_keys }) }
let(:experiment) { Split::Experiment.new("link_color") }
before(:each) do
@subject = described_class.new(context)
end
end
context '#cleanup_old_versions!' do
let(:user_keys) { { 'link_color:1' => 'blue' } }
it 'removes key if old experiment is found' do
@subject.cleanup_old_versions!(experiment)
expect(@subject.keys).to be_empty
end
end
end
context "#cleanup_old_experiments!" do
it "removes key if experiment is not found" do
@subject.cleanup_old_experiments!
expect(@subject.keys).to be_empty
end
it "removes key if experiment has a winner" do
allow(Split::ExperimentCatalog).to receive(:find).with("link_color").and_return(experiment)
allow(experiment).to receive(:start_time).and_return(Date.today)
allow(experiment).to receive(:has_winner?).and_return(true)
@subject.cleanup_old_experiments!
expect(@subject.keys).to be_empty
end
it "removes key if experiment has not started yet" do
allow(Split::ExperimentCatalog).to receive(:find).with("link_color").and_return(experiment)
allow(experiment).to receive(:has_winner?).and_return(false)
@subject.cleanup_old_experiments!
expect(@subject.keys).to be_empty
end
context "with finished key" do
let(:user_keys) { { "link_color" => "blue", "link_color:finished" => true } }
it "does not remove finished key for experiment without a winner" do
allow(Split::ExperimentCatalog).to receive(:find).with("link_color").and_return(experiment)
allow(Split::ExperimentCatalog).to receive(:find).with("link_color:finished").and_return(nil)
allow(experiment).to receive(:start_time).and_return(Date.today)
allow(experiment).to receive(:has_winner?).and_return(false)
@subject.cleanup_old_experiments!
expect(@subject.keys).to include("link_color")
expect(@subject.keys).to include("link_color:finished")
end
end
context "when already cleaned up" do
before do
@subject.cleanup_old_experiments!
end
it "does not clean up again" do
expect(@subject).to_not receive(:keys_without_finished)
@subject.cleanup_old_experiments!
end
end
end
context "allows user to be loaded from adapter" do
it "loads user from adapter (RedisAdapter)" do
user = Split::Persistence::RedisAdapter.new(nil, 112233)
user["foo"] = "bar"
ab_user = Split::User.find(112233, :redis)
expect(ab_user["foo"]).to eql("bar")
end
it "returns nil if adapter does not implement a finder method" do
ab_user = Split::User.find(112233, :dual_adapter)
expect(ab_user).to be_nil
end
end
context "instantiated with custom adapter" do
let(:custom_adapter) { double(:persistence_adapter) }
before do
@subject = described_class.new(context, custom_adapter)
end
it "sets user to the custom adapter" do
expect(@subject.user).to eq(custom_adapter)
end
end
end
<MSG> Fix cleanup_old_versions! misbehaviour
<DFF> @@ -17,11 +17,25 @@ describe Split::User do
end
context '#cleanup_old_versions!' do
- let(:user_keys) { { 'link_color:1' => 'blue' } }
+ let(:experiment_version) { "#{experiment.name}:1" }
+ let(:second_experiment_version) { "#{experiment.name}_another:1" }
+ let(:third_experiment_version) { "variation_of_#{experiment.name}:1" }
+ let(:user_keys) do
+ {
+ experiment_version => 'blue',
+ second_experiment_version => 'red',
+ third_experiment_version => 'yellow'
+ }
+ end
+
+ before(:each) { @subject.cleanup_old_versions!(experiment) }
it 'removes key if old experiment is found' do
- @subject.cleanup_old_versions!(experiment)
- expect(@subject.keys).to be_empty
+ expect(@subject.keys).not_to include(experiment_version)
+ end
+
+ it 'does not remove other keys' do
+ expect(@subject.keys).to include(second_experiment_version, third_experiment_version)
end
end
| 17 | Fix cleanup_old_versions! misbehaviour | 3 | .rb | rb | mit | splitrb/split |
10071754 | <NME> user_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/experiment_catalog"
require "split/experiment"
require "split/user"
describe Split::User do
let(:user_keys) { { "link_color" => "blue" } }
let(:context) { double(session: { split: user_keys }) }
let(:experiment) { Split::Experiment.new("link_color") }
before(:each) do
@subject = described_class.new(context)
end
end
context '#cleanup_old_versions!' do
let(:user_keys) { { 'link_color:1' => 'blue' } }
it 'removes key if old experiment is found' do
@subject.cleanup_old_versions!(experiment)
expect(@subject.keys).to be_empty
end
end
end
context "#cleanup_old_experiments!" do
it "removes key if experiment is not found" do
@subject.cleanup_old_experiments!
expect(@subject.keys).to be_empty
end
it "removes key if experiment has a winner" do
allow(Split::ExperimentCatalog).to receive(:find).with("link_color").and_return(experiment)
allow(experiment).to receive(:start_time).and_return(Date.today)
allow(experiment).to receive(:has_winner?).and_return(true)
@subject.cleanup_old_experiments!
expect(@subject.keys).to be_empty
end
it "removes key if experiment has not started yet" do
allow(Split::ExperimentCatalog).to receive(:find).with("link_color").and_return(experiment)
allow(experiment).to receive(:has_winner?).and_return(false)
@subject.cleanup_old_experiments!
expect(@subject.keys).to be_empty
end
context "with finished key" do
let(:user_keys) { { "link_color" => "blue", "link_color:finished" => true } }
it "does not remove finished key for experiment without a winner" do
allow(Split::ExperimentCatalog).to receive(:find).with("link_color").and_return(experiment)
allow(Split::ExperimentCatalog).to receive(:find).with("link_color:finished").and_return(nil)
allow(experiment).to receive(:start_time).and_return(Date.today)
allow(experiment).to receive(:has_winner?).and_return(false)
@subject.cleanup_old_experiments!
expect(@subject.keys).to include("link_color")
expect(@subject.keys).to include("link_color:finished")
end
end
context "when already cleaned up" do
before do
@subject.cleanup_old_experiments!
end
it "does not clean up again" do
expect(@subject).to_not receive(:keys_without_finished)
@subject.cleanup_old_experiments!
end
end
end
context "allows user to be loaded from adapter" do
it "loads user from adapter (RedisAdapter)" do
user = Split::Persistence::RedisAdapter.new(nil, 112233)
user["foo"] = "bar"
ab_user = Split::User.find(112233, :redis)
expect(ab_user["foo"]).to eql("bar")
end
it "returns nil if adapter does not implement a finder method" do
ab_user = Split::User.find(112233, :dual_adapter)
expect(ab_user).to be_nil
end
end
context "instantiated with custom adapter" do
let(:custom_adapter) { double(:persistence_adapter) }
before do
@subject = described_class.new(context, custom_adapter)
end
it "sets user to the custom adapter" do
expect(@subject.user).to eq(custom_adapter)
end
end
end
<MSG> Fix cleanup_old_versions! misbehaviour
<DFF> @@ -17,11 +17,25 @@ describe Split::User do
end
context '#cleanup_old_versions!' do
- let(:user_keys) { { 'link_color:1' => 'blue' } }
+ let(:experiment_version) { "#{experiment.name}:1" }
+ let(:second_experiment_version) { "#{experiment.name}_another:1" }
+ let(:third_experiment_version) { "variation_of_#{experiment.name}:1" }
+ let(:user_keys) do
+ {
+ experiment_version => 'blue',
+ second_experiment_version => 'red',
+ third_experiment_version => 'yellow'
+ }
+ end
+
+ before(:each) { @subject.cleanup_old_versions!(experiment) }
it 'removes key if old experiment is found' do
- @subject.cleanup_old_versions!(experiment)
- expect(@subject.keys).to be_empty
+ expect(@subject.keys).not_to include(experiment_version)
+ end
+
+ it 'does not remove other keys' do
+ expect(@subject.keys).to include(second_experiment_version, third_experiment_version)
end
end
| 17 | Fix cleanup_old_versions! misbehaviour | 3 | .rb | rb | mit | splitrb/split |
10071755 | <NME> version.rb
<BEF> module Split
VERSION = "0.2.1"
end
VERSION = "4.0.1"
end
<MSG> Version 0.2.2
<DFF> @@ -1,3 +1,3 @@
module Split
- VERSION = "0.2.1"
+ VERSION = "0.2.2"
end
| 1 | Version 0.2.2 | 1 | .rb | rb | mit | splitrb/split |
10071756 | <NME> version.rb
<BEF> module Split
VERSION = "0.2.1"
end
VERSION = "4.0.1"
end
<MSG> Version 0.2.2
<DFF> @@ -1,3 +1,3 @@
module Split
- VERSION = "0.2.1"
+ VERSION = "0.2.2"
end
| 1 | Version 0.2.2 | 1 | .rb | rb | mit | splitrb/split |
10071757 | <NME> version.rb
<BEF> module Split
VERSION = "0.2.1"
end
VERSION = "4.0.1"
end
<MSG> Version 0.2.2
<DFF> @@ -1,3 +1,3 @@
module Split
- VERSION = "0.2.1"
+ VERSION = "0.2.2"
end
| 1 | Version 0.2.2 | 1 | .rb | rb | mit | splitrb/split |
10071758 | <NME> format.ts
<BEF> import { equal } from 'assert';
import html from '../src/markup/format/html';
import haml from '../src/markup/format/haml';
import pug from '../src/markup/format/pug';
import slim from '../src/markup/format/slim';
import parse from '../src/markup';
import createConfig, { Options } from '../src/config';
describe('Format', () => {
const defaultConfig = createConfig();
const field = createConfig({
options: {
'output.field': (index, placeholder) => placeholder ? `\${${index}:${placeholder}}` : `\${${index}}`
}
});
function createProfile(options: Partial<Options>) {
const config = createConfig({ options });
return config;
}
describe('HTML', () => {
const format = (abbr: string, config = defaultConfig) => html(parse(abbr, config), config);
it('basic', () => {
equal(format('div>p'), '<div>\n\t<p></p>\n</div>');
equal(format('div>p*3'), '<div>\n\t<p></p>\n\t<p></p>\n\t<p></p>\n</div>');
equal(format('div#a>p.b*2>span'), '<div id="a">\n\t<p class="b"><span></span></p>\n\t<p class="b"><span></span></p>\n</div>');
equal(format('div>div>div'), '<div>\n\t<div>\n\t\t<div></div>\n\t</div>\n</div>');
equal(format('table>tr*2>td{item}*2'),
'<table>\n\t<tr>\n\t\t<td>item</td>\n\t\t<td>item</td>\n\t</tr>\n\t<tr>\n\t\t<td>item</td>\n\t\t<td>item</td>\n\t</tr>\n</table>');
});
it('inline elements', () => {
const profile = createProfile({ 'output.inlineBreak': 3 });
const breakInline = createProfile({ 'output.inlineBreak': 1 });
const keepInline = createProfile({ 'output.inlineBreak': 0 });
const xhtml = createProfile({ 'output.selfClosingStyle': 'xhtml' });
equal(format('div>a>b*3', xhtml), '<div>\n\t<a href="">\n\t\t<b></b>\n\t\t<b></b>\n\t\t<b></b>\n\t</a>\n</div>');
equal(format('p>i', profile), '<p><i></i></p>');
equal(format('p>i*2', profile), '<p><i></i><i></i></p>');
equal(format('p>i*2', breakInline), '<p>\n\t<i></i>\n\t<i></i>\n</p>');
equal(format('p>i*3', profile), '<p>\n\t<i></i>\n\t<i></i>\n\t<i></i>\n</p>');
equal(format('p>i*3', keepInline), '<p><i></i><i></i><i></i></p>');
equal(format('i*2', profile), '<i></i><i></i>');
equal(format('i*3', profile), '<i></i>\n<i></i>\n<i></i>');
equal(format('i{a}+i{b}', profile), '<i>a</i><i>b</i>');
equal(format('img[src]/+p', xhtml), '<img src="" alt="" />\n<p></p>');
equal(format('div>img[src]/+p', xhtml), '<div>\n\t<img src="" alt="" />\n\t<p></p>\n</div>');
equal(format('div>p+img[src]/', xhtml), '<div>\n\t<p></p>\n\t<img src="" alt="" />\n</div>');
equal(format('div>p+img[src]/+p', xhtml), '<div>\n\t<p></p>\n\t<img src="" alt="" />\n\t<p></p>\n</div>');
equal(format('div>p+img[src]/*2+p', xhtml), '<div>\n\t<p></p>\n\t<img src="" alt="" /><img src="" alt="" />\n\t<p></p>\n</div>');
equal(format('div>p+img[src]/*3+p', xhtml), '<div>\n\t<p></p>\n\t<img src="" alt="" />\n\t<img src="" alt="" />\n\t<img src="" alt="" />\n\t<p></p>\n</div>');
});
it('generate fields', () => {
equal(format('a[href]', field), '<a href="${1}">${2}</a>');
equal(format('a[href]*2', field), '<a href="${1}">${2}</a><a href="${3}">${4}</a>');
equal(format('{${0} ${1:foo} ${2:bar}}*2', field), '${1} ${2:foo} ${3:bar}\n${4} ${5:foo} ${6:bar}');
equal(format('{${0} ${1:foo} ${2:bar}}*2'), ' foo bar\n foo bar');
equal(format('ul>li*2', field), '<ul>\n\t<li>${1}</li>\n\t<li>${2}</li>\n</ul>');
equal(format('div>img[src]/', field), '<div><img src="${1}" alt="${2}"></div>');
});
// it.only('debug', () => {
// equal(format('div>{foo}+{bar}+p'), '<div>\n\tfoobar\n\t<p></p>\n</div>');
// });
it('mixed content', () => {
equal(format('div{foo}'), '<div>foo</div>');
equal(format('div>{foo}'), '<div>foo</div>');
equal(format('div>{foo}+{bar}'), '<div>\n\tfoo\n\tbar\n</div>');
equal(format('div>{foo}+{bar}+p'), '<div>\n\tfoo\n\tbar\n\t<p></p>\n</div>');
equal(format('div>{foo}+{bar}+p+{foo}+{bar}+p'), '<div>\n\tfoo\n\tbar\n\t<p></p>\n\tfoo\n\tbar\n\t<p></p>\n</div>');
equal(format('div>{foo}+p+{bar}'), '<div>\n\tfoo\n\t<p></p>\n\tbar\n</div>');
equal(format('div>{foo}>p'), '<div>\n\tfoo\n\t<p></p>\n</div>');
equal(format('div>{<!-- ${0} -->}'), '<div><!-- --></div>');
equal(format('div>{<!-- ${0} -->}+p'), '<div>\n\t<!-- -->\n\t<p></p>\n</div>');
equal(format('div>p+{<!-- ${0} -->}'), '<div>\n\t<p></p>\n\t<!-- -->\n</div>');
equal(format('div>{<!-- ${0} -->}>p'), '<div>\n\t<!-- <p></p> -->\n</div>');
equal(format('div>{<!-- ${0} -->}*2>p'), '<div>\n\t<!-- <p></p> -->\n\t<!-- <p></p> -->\n</div>');
equal(format('div>{<!-- ${0} -->}>p*2'), '<div>\n\t<!-- \n\t<p></p>\n\t<p></p>\n\t-->\n</div>');
equal(format('div>{<!-- ${0} -->}*2>p*2'), '<div>\n\t<!-- \n\t<p></p>\n\t<p></p>\n\t-->\n\t<!-- \n\t<p></p>\n\t<p></p>\n\t-->\n</div>');
equal(format('div>{<!-- ${0} -->}>b'), '<div>\n\t<!-- <b></b> -->\n</div>');
equal(format('div>{<!-- ${0} -->}>b*2'), '<div>\n\t<!-- <b></b><b></b> -->\n</div>');
equal(format('div>{<!-- ${0} -->}>b*3'), '<div>\n\t<!-- \n\t<b></b>\n\t<b></b>\n\t<b></b>\n\t-->\n</div>');
equal(format('div>{<!-- ${0} -->}', field), '<div><!-- ${1} --></div>');
equal(format('div>{<!-- ${0} -->}>b', field), '<div>\n\t<!-- <b>${1}</b> -->\n</div>');
});
it('self-closing', () => {
const xmlStyle = createProfile({ 'output.selfClosingStyle': 'xml' });
const htmlStyle = createProfile({ 'output.selfClosingStyle': 'html' });
const xhtmlStyle = createProfile({ 'output.selfClosingStyle': 'xhtml' });
equal(format('img[src]/', htmlStyle), '<img src="" alt="">');
equal(format('img[src]/', xhtmlStyle), '<img src="" alt="" />');
equal(format('img[src]/', xmlStyle), '<img src="" alt=""/>');
equal(format('div>img[src]/', xhtmlStyle), '<div><img src="" alt="" /></div>');
});
it('boolean attributes', () => {
const compact = createProfile({ 'output.compactBoolean': true });
const noCompact = createProfile({ 'output.compactBoolean': false });
equal(format('p[b.]', noCompact), '<p b="b"></p>');
equal(format('p[b.]', compact), '<p b></p>');
equal(format('p[contenteditable]', compact), '<p contenteditable></p>');
equal(format('p[contenteditable]', noCompact), '<p contenteditable="contenteditable"></p>');
equal(format('p[contenteditable=foo]', compact), '<p contenteditable="foo"></p>');
});
it('no formatting', () => {
const profile = createProfile({ 'output.format': false });
equal(format('div>p', profile), '<div><p></p></div>');
equal(format('div>{foo}+p+{bar}', profile), '<div>foo<p></p>bar</div>');
equal(format('div>{foo}>p', profile), '<div>foo<p></p></div>');
equal(format('div>{<!-- ${0} -->}>p', profile), '<div><!-- <p></p> --></div>');
});
it('format specific nodes', () => {
equal(format('{<!DOCTYPE html>}+html>(head>meta[charset=${charset}]/+title{${1:Document}})+body', field),
'<!DOCTYPE html>\n<html>\n<head>\n\t<meta charset="UTF-8">\n\t<title>${2:Document}</title>\n</head>\n<body>\n\t${3}\n</body>\n</html>');
});
it('comment', () => {
const opt = createConfig({ options: { 'comment.enabled': true } });
equal(format('ul>li.item', opt), '<ul>\n\t<li class="item"></li>\n\t<!-- /.item -->\n</ul>');
equal(format('div>ul>li.item#foo', opt), '<div>\n\t<ul>\n\t\t<li class="item" id="foo"></li>\n\t\t<!-- /#foo.item -->\n\t</ul>\n</div>');
opt.options['comment.after'] = ' { [%ID] }';
equal(format('div>ul>li.item#foo', opt), '<div>\n\t<ul>\n\t\t<li class="item" id="foo"></li> { %foo }\n\t</ul>\n</div>');
});
});
describe('HAML', () => {
describe('HAML', () => {
const format = (abbr: string, config = defaultConfig) => haml(parse(abbr, config), config);
it.only('basic', () => {
equal(format('div#header>ul.nav>li[title=test].nav-item*2'),
'#header\n\t%ul.nav\n\t\t%li.nav-item(title="test")\n\t\t%li.nav-item(title="test")');
equal(format('div#foo[data-n1=v1 title=test data-n2=v2].bar'),
'#foo.bar(data-n1="v1" title="test" data-n2="v2")');
let profile = createProfile({ compactBoolean: true });
equal(format('input[disabled. foo title=test]/', profile), '%input(type="text" disabled foo="" title="test")/');
let profile = createProfile({ 'output.compactBoolean': true });
profile = createProfile({ compactBoolean: false });
equal(format('input[disabled. foo title=test]/', profile), '%input(type="text" disabled=true foo="" title="test")/');
});
});
});
});
describe('Pug', () => {
const format = (abbr: string, config = defaultConfig) => pug(parse(abbr, config), config);
it('basic', () => {
equal(format('div#header>ul.nav>li[title=test].nav-item*2'),
'#header\n\tul.nav\n\t\tli.nav-item(title="test") \n\t\tli.nav-item(title="test") ');
equal(format('div#foo[data-n1=v1 title=test data-n2=v2].bar'),
'#foo.bar(data-n1="v1", title="test", data-n2="v2") ');
equal(format('input[disabled. foo title=test]'), 'input(type="text", disabled, foo="", title="test")');
// Use closing slash for XML output format
equal(format('input[disabled. foo title=test]', createProfile({ 'output.selfClosingStyle': 'xml' })), 'input(type="text", disabled, foo="", title="test")/');
});
it('nodes with text', () => {
equal(format('{Text 1}'), 'Text 1');
equal(format('span{Text 1}'), 'span Text 1');
equal(format('span{Text 1}>b{Text 2}'), 'span Text 1\n\tb Text 2');
equal(format('span{Text 1\nText 2}>b{Text 3}'), 'span\n\t| Text 1\n\t| Text 2\n\tb Text 3');
equal(format('div>span{Text 1\nText 2}>b{Text 3}'), 'div\n\tspan\n\t\t| Text 1\n\t\t| Text 2\n\t\tb Text 3');
});
it('generate fields', () => {
equal(format('a[href]', field), 'a(href="${1}") ${2}');
equal(format('a[href]*2', field), 'a(href="${1}") ${2}\na(href="${3}") ${4}');
equal(format('{${0} ${1:foo} ${2:bar}}*2', field), '${1} ${2:foo} ${3:bar}${4} ${5:foo} ${6:bar}');
equal(format('{${0} ${1:foo} ${2:bar}}*2'), ' foo bar foo bar');
equal(format('ul>li*2', field), 'ul\n\tli ${1}\n\tli ${2}');
equal(format('div>img[src]/', field), 'div\n\timg(src="${1}", alt="${2}")');
});
});
describe('Slim', () => {
const format = (abbr: string, config = defaultConfig) => slim(parse(abbr, config), config);
it('basic', () => {
equal(format('div#header>ul.nav>li[title=test].nav-item*2'),
'#header\n\tul.nav\n\t\tli.nav-item title="test" \n\t\tli.nav-item title="test" ');
equal(format('div#foo[data-n1=v1 title=test data-n2=v2].bar'),
'#foo.bar data-n1="v1" title="test" data-n2="v2" ');
// const profile = createProfile({ inlineBreak: 0 });
// equal(format('ul>li>span{Text}', profile), 'ul\n\tli: span Text');
// equal(format('ul>li>span{Text}'), 'ul\n\tli\n\t\tspan Text');
// equal(format('ul>li>span{Text}*2', profile), 'ul\n\tli\n\t\tspan Text\n\t\tspan Text');
});
// it.skip('attribute wrappers', () => {
// equal(format('input[disabled. foo title=test]'), 'input disabled=true foo="" title="test"');
// equal(format('input[disabled. foo title=test]', null, { attributeWrap: 'round' }),
// 'input(disabled foo="" title="test")');
// });
it('nodes with text', () => {
equal(format('{Text 1}'), 'Text 1');
equal(format('span{Text 1}'), 'span Text 1');
equal(format('span{Text 1}>b{Text 2}'), 'span Text 1\n\tb Text 2');
equal(format('span{Text 1\nText 2}>b{Text 3}'), 'span\n\t| Text 1\n\t| Text 2\n\tb Text 3');
equal(format('div>span{Text 1\nText 2}>b{Text 3}'), 'div\n\tspan\n\t\t| Text 1\n\t\t| Text 2\n\t\tb Text 3');
});
it('generate fields', () => {
equal(format('a[href]', field), 'a href="${1}" ${2}');
equal(format('a[href]*2', field), 'a href="${1}" ${2}\na href="${3}" ${4}');
equal(format('{${0} ${1:foo} ${2:bar}}*2', field), '${1} ${2:foo} ${3:bar}${4} ${5:foo} ${6:bar}');
equal(format('{${0} ${1:foo} ${2:bar}}*2'), ' foo bar foo bar');
equal(format('ul>li*2', field), 'ul\n\tli ${1}\n\tli ${2}');
equal(format('div>img[src]/', field), 'div\n\timg src="${1}" alt="${2}"/');
});
});
});
<MSG> Support HAML output
<DFF> @@ -146,12 +146,12 @@ describe('Format', () => {
describe('HAML', () => {
const format = (abbr: string, config = defaultConfig) => haml(parse(abbr, config), config);
- it.only('basic', () => {
+ it('basic', () => {
equal(format('div#header>ul.nav>li[title=test].nav-item*2'),
- '#header\n\t%ul.nav\n\t\t%li.nav-item(title="test")\n\t\t%li.nav-item(title="test")');
+ '#header\n\t%ul.nav\n\t\t%li.nav-item(title="test") \n\t\t%li.nav-item(title="test") ');
equal(format('div#foo[data-n1=v1 title=test data-n2=v2].bar'),
- '#foo.bar(data-n1="v1" title="test" data-n2="v2")');
+ '#foo.bar(data-n1="v1" title="test" data-n2="v2") ');
let profile = createProfile({ compactBoolean: true });
equal(format('input[disabled. foo title=test]/', profile), '%input(type="text" disabled foo="" title="test")/');
@@ -159,5 +159,22 @@ describe('Format', () => {
profile = createProfile({ compactBoolean: false });
equal(format('input[disabled. foo title=test]/', profile), '%input(type="text" disabled=true foo="" title="test")/');
});
+
+ it('nodes with text', () => {
+ equal(format('{Text 1}'), 'Text 1');
+ equal(format('span{Text 1}'), '%span Text 1');
+ equal(format('span{Text 1}>b{Text 2}'), '%span Text 1\n\t%b Text 2');
+ equal(format('span{Text 1\nText 2}>b{Text 3}'), '%span\n\tText 1 |\n\tText 2 |\n\t%b Text 3');
+ equal(format('div>span{Text 1\nText 2\nText 123}>b{Text 3}'), '%div\n\t%span\n\t\tText 1 |\n\t\tText 2 |\n\t\tText 123 |\n\t\t%b Text 3');
+ });
+
+ it('generate fields', () => {
+ equal(format('a[href]', field), '%a(href="${1}") ${2}');
+ equal(format('a[href]*2', field), '%a(href="${1}") ${2}\n%a(href="${3}") ${4}');
+ equal(format('{${0} ${1:foo} ${2:bar}}*2', field), '${1} ${2:foo} ${3:bar}${4} ${5:foo} ${6:bar}');
+ equal(format('{${0} ${1:foo} ${2:bar}}*2'), ' foo bar foo bar');
+ equal(format('ul>li*2', field), '%ul\n\t%li ${1}\n\t%li ${2}');
+ equal(format('div>img[src]/', field), '%div\n\t%img(src="${1}" alt="${2}")/');
+ });
});
});
| 20 | Support HAML output | 3 | .ts | ts | mit | emmetio/emmet |
10071759 | <NME> format.ts
<BEF> import { equal } from 'assert';
import html from '../src/markup/format/html';
import haml from '../src/markup/format/haml';
import pug from '../src/markup/format/pug';
import slim from '../src/markup/format/slim';
import parse from '../src/markup';
import createConfig, { Options } from '../src/config';
describe('Format', () => {
const defaultConfig = createConfig();
const field = createConfig({
options: {
'output.field': (index, placeholder) => placeholder ? `\${${index}:${placeholder}}` : `\${${index}}`
}
});
function createProfile(options: Partial<Options>) {
const config = createConfig({ options });
return config;
}
describe('HTML', () => {
const format = (abbr: string, config = defaultConfig) => html(parse(abbr, config), config);
it('basic', () => {
equal(format('div>p'), '<div>\n\t<p></p>\n</div>');
equal(format('div>p*3'), '<div>\n\t<p></p>\n\t<p></p>\n\t<p></p>\n</div>');
equal(format('div#a>p.b*2>span'), '<div id="a">\n\t<p class="b"><span></span></p>\n\t<p class="b"><span></span></p>\n</div>');
equal(format('div>div>div'), '<div>\n\t<div>\n\t\t<div></div>\n\t</div>\n</div>');
equal(format('table>tr*2>td{item}*2'),
'<table>\n\t<tr>\n\t\t<td>item</td>\n\t\t<td>item</td>\n\t</tr>\n\t<tr>\n\t\t<td>item</td>\n\t\t<td>item</td>\n\t</tr>\n</table>');
});
it('inline elements', () => {
const profile = createProfile({ 'output.inlineBreak': 3 });
const breakInline = createProfile({ 'output.inlineBreak': 1 });
const keepInline = createProfile({ 'output.inlineBreak': 0 });
const xhtml = createProfile({ 'output.selfClosingStyle': 'xhtml' });
equal(format('div>a>b*3', xhtml), '<div>\n\t<a href="">\n\t\t<b></b>\n\t\t<b></b>\n\t\t<b></b>\n\t</a>\n</div>');
equal(format('p>i', profile), '<p><i></i></p>');
equal(format('p>i*2', profile), '<p><i></i><i></i></p>');
equal(format('p>i*2', breakInline), '<p>\n\t<i></i>\n\t<i></i>\n</p>');
equal(format('p>i*3', profile), '<p>\n\t<i></i>\n\t<i></i>\n\t<i></i>\n</p>');
equal(format('p>i*3', keepInline), '<p><i></i><i></i><i></i></p>');
equal(format('i*2', profile), '<i></i><i></i>');
equal(format('i*3', profile), '<i></i>\n<i></i>\n<i></i>');
equal(format('i{a}+i{b}', profile), '<i>a</i><i>b</i>');
equal(format('img[src]/+p', xhtml), '<img src="" alt="" />\n<p></p>');
equal(format('div>img[src]/+p', xhtml), '<div>\n\t<img src="" alt="" />\n\t<p></p>\n</div>');
equal(format('div>p+img[src]/', xhtml), '<div>\n\t<p></p>\n\t<img src="" alt="" />\n</div>');
equal(format('div>p+img[src]/+p', xhtml), '<div>\n\t<p></p>\n\t<img src="" alt="" />\n\t<p></p>\n</div>');
equal(format('div>p+img[src]/*2+p', xhtml), '<div>\n\t<p></p>\n\t<img src="" alt="" /><img src="" alt="" />\n\t<p></p>\n</div>');
equal(format('div>p+img[src]/*3+p', xhtml), '<div>\n\t<p></p>\n\t<img src="" alt="" />\n\t<img src="" alt="" />\n\t<img src="" alt="" />\n\t<p></p>\n</div>');
});
it('generate fields', () => {
equal(format('a[href]', field), '<a href="${1}">${2}</a>');
equal(format('a[href]*2', field), '<a href="${1}">${2}</a><a href="${3}">${4}</a>');
equal(format('{${0} ${1:foo} ${2:bar}}*2', field), '${1} ${2:foo} ${3:bar}\n${4} ${5:foo} ${6:bar}');
equal(format('{${0} ${1:foo} ${2:bar}}*2'), ' foo bar\n foo bar');
equal(format('ul>li*2', field), '<ul>\n\t<li>${1}</li>\n\t<li>${2}</li>\n</ul>');
equal(format('div>img[src]/', field), '<div><img src="${1}" alt="${2}"></div>');
});
// it.only('debug', () => {
// equal(format('div>{foo}+{bar}+p'), '<div>\n\tfoobar\n\t<p></p>\n</div>');
// });
it('mixed content', () => {
equal(format('div{foo}'), '<div>foo</div>');
equal(format('div>{foo}'), '<div>foo</div>');
equal(format('div>{foo}+{bar}'), '<div>\n\tfoo\n\tbar\n</div>');
equal(format('div>{foo}+{bar}+p'), '<div>\n\tfoo\n\tbar\n\t<p></p>\n</div>');
equal(format('div>{foo}+{bar}+p+{foo}+{bar}+p'), '<div>\n\tfoo\n\tbar\n\t<p></p>\n\tfoo\n\tbar\n\t<p></p>\n</div>');
equal(format('div>{foo}+p+{bar}'), '<div>\n\tfoo\n\t<p></p>\n\tbar\n</div>');
equal(format('div>{foo}>p'), '<div>\n\tfoo\n\t<p></p>\n</div>');
equal(format('div>{<!-- ${0} -->}'), '<div><!-- --></div>');
equal(format('div>{<!-- ${0} -->}+p'), '<div>\n\t<!-- -->\n\t<p></p>\n</div>');
equal(format('div>p+{<!-- ${0} -->}'), '<div>\n\t<p></p>\n\t<!-- -->\n</div>');
equal(format('div>{<!-- ${0} -->}>p'), '<div>\n\t<!-- <p></p> -->\n</div>');
equal(format('div>{<!-- ${0} -->}*2>p'), '<div>\n\t<!-- <p></p> -->\n\t<!-- <p></p> -->\n</div>');
equal(format('div>{<!-- ${0} -->}>p*2'), '<div>\n\t<!-- \n\t<p></p>\n\t<p></p>\n\t-->\n</div>');
equal(format('div>{<!-- ${0} -->}*2>p*2'), '<div>\n\t<!-- \n\t<p></p>\n\t<p></p>\n\t-->\n\t<!-- \n\t<p></p>\n\t<p></p>\n\t-->\n</div>');
equal(format('div>{<!-- ${0} -->}>b'), '<div>\n\t<!-- <b></b> -->\n</div>');
equal(format('div>{<!-- ${0} -->}>b*2'), '<div>\n\t<!-- <b></b><b></b> -->\n</div>');
equal(format('div>{<!-- ${0} -->}>b*3'), '<div>\n\t<!-- \n\t<b></b>\n\t<b></b>\n\t<b></b>\n\t-->\n</div>');
equal(format('div>{<!-- ${0} -->}', field), '<div><!-- ${1} --></div>');
equal(format('div>{<!-- ${0} -->}>b', field), '<div>\n\t<!-- <b>${1}</b> -->\n</div>');
});
it('self-closing', () => {
const xmlStyle = createProfile({ 'output.selfClosingStyle': 'xml' });
const htmlStyle = createProfile({ 'output.selfClosingStyle': 'html' });
const xhtmlStyle = createProfile({ 'output.selfClosingStyle': 'xhtml' });
equal(format('img[src]/', htmlStyle), '<img src="" alt="">');
equal(format('img[src]/', xhtmlStyle), '<img src="" alt="" />');
equal(format('img[src]/', xmlStyle), '<img src="" alt=""/>');
equal(format('div>img[src]/', xhtmlStyle), '<div><img src="" alt="" /></div>');
});
it('boolean attributes', () => {
const compact = createProfile({ 'output.compactBoolean': true });
const noCompact = createProfile({ 'output.compactBoolean': false });
equal(format('p[b.]', noCompact), '<p b="b"></p>');
equal(format('p[b.]', compact), '<p b></p>');
equal(format('p[contenteditable]', compact), '<p contenteditable></p>');
equal(format('p[contenteditable]', noCompact), '<p contenteditable="contenteditable"></p>');
equal(format('p[contenteditable=foo]', compact), '<p contenteditable="foo"></p>');
});
it('no formatting', () => {
const profile = createProfile({ 'output.format': false });
equal(format('div>p', profile), '<div><p></p></div>');
equal(format('div>{foo}+p+{bar}', profile), '<div>foo<p></p>bar</div>');
equal(format('div>{foo}>p', profile), '<div>foo<p></p></div>');
equal(format('div>{<!-- ${0} -->}>p', profile), '<div><!-- <p></p> --></div>');
});
it('format specific nodes', () => {
equal(format('{<!DOCTYPE html>}+html>(head>meta[charset=${charset}]/+title{${1:Document}})+body', field),
'<!DOCTYPE html>\n<html>\n<head>\n\t<meta charset="UTF-8">\n\t<title>${2:Document}</title>\n</head>\n<body>\n\t${3}\n</body>\n</html>');
});
it('comment', () => {
const opt = createConfig({ options: { 'comment.enabled': true } });
equal(format('ul>li.item', opt), '<ul>\n\t<li class="item"></li>\n\t<!-- /.item -->\n</ul>');
equal(format('div>ul>li.item#foo', opt), '<div>\n\t<ul>\n\t\t<li class="item" id="foo"></li>\n\t\t<!-- /#foo.item -->\n\t</ul>\n</div>');
opt.options['comment.after'] = ' { [%ID] }';
equal(format('div>ul>li.item#foo', opt), '<div>\n\t<ul>\n\t\t<li class="item" id="foo"></li> { %foo }\n\t</ul>\n</div>');
});
});
describe('HAML', () => {
describe('HAML', () => {
const format = (abbr: string, config = defaultConfig) => haml(parse(abbr, config), config);
it.only('basic', () => {
equal(format('div#header>ul.nav>li[title=test].nav-item*2'),
'#header\n\t%ul.nav\n\t\t%li.nav-item(title="test")\n\t\t%li.nav-item(title="test")');
equal(format('div#foo[data-n1=v1 title=test data-n2=v2].bar'),
'#foo.bar(data-n1="v1" title="test" data-n2="v2")');
let profile = createProfile({ compactBoolean: true });
equal(format('input[disabled. foo title=test]/', profile), '%input(type="text" disabled foo="" title="test")/');
let profile = createProfile({ 'output.compactBoolean': true });
profile = createProfile({ compactBoolean: false });
equal(format('input[disabled. foo title=test]/', profile), '%input(type="text" disabled=true foo="" title="test")/');
});
});
});
});
describe('Pug', () => {
const format = (abbr: string, config = defaultConfig) => pug(parse(abbr, config), config);
it('basic', () => {
equal(format('div#header>ul.nav>li[title=test].nav-item*2'),
'#header\n\tul.nav\n\t\tli.nav-item(title="test") \n\t\tli.nav-item(title="test") ');
equal(format('div#foo[data-n1=v1 title=test data-n2=v2].bar'),
'#foo.bar(data-n1="v1", title="test", data-n2="v2") ');
equal(format('input[disabled. foo title=test]'), 'input(type="text", disabled, foo="", title="test")');
// Use closing slash for XML output format
equal(format('input[disabled. foo title=test]', createProfile({ 'output.selfClosingStyle': 'xml' })), 'input(type="text", disabled, foo="", title="test")/');
});
it('nodes with text', () => {
equal(format('{Text 1}'), 'Text 1');
equal(format('span{Text 1}'), 'span Text 1');
equal(format('span{Text 1}>b{Text 2}'), 'span Text 1\n\tb Text 2');
equal(format('span{Text 1\nText 2}>b{Text 3}'), 'span\n\t| Text 1\n\t| Text 2\n\tb Text 3');
equal(format('div>span{Text 1\nText 2}>b{Text 3}'), 'div\n\tspan\n\t\t| Text 1\n\t\t| Text 2\n\t\tb Text 3');
});
it('generate fields', () => {
equal(format('a[href]', field), 'a(href="${1}") ${2}');
equal(format('a[href]*2', field), 'a(href="${1}") ${2}\na(href="${3}") ${4}');
equal(format('{${0} ${1:foo} ${2:bar}}*2', field), '${1} ${2:foo} ${3:bar}${4} ${5:foo} ${6:bar}');
equal(format('{${0} ${1:foo} ${2:bar}}*2'), ' foo bar foo bar');
equal(format('ul>li*2', field), 'ul\n\tli ${1}\n\tli ${2}');
equal(format('div>img[src]/', field), 'div\n\timg(src="${1}", alt="${2}")');
});
});
describe('Slim', () => {
const format = (abbr: string, config = defaultConfig) => slim(parse(abbr, config), config);
it('basic', () => {
equal(format('div#header>ul.nav>li[title=test].nav-item*2'),
'#header\n\tul.nav\n\t\tli.nav-item title="test" \n\t\tli.nav-item title="test" ');
equal(format('div#foo[data-n1=v1 title=test data-n2=v2].bar'),
'#foo.bar data-n1="v1" title="test" data-n2="v2" ');
// const profile = createProfile({ inlineBreak: 0 });
// equal(format('ul>li>span{Text}', profile), 'ul\n\tli: span Text');
// equal(format('ul>li>span{Text}'), 'ul\n\tli\n\t\tspan Text');
// equal(format('ul>li>span{Text}*2', profile), 'ul\n\tli\n\t\tspan Text\n\t\tspan Text');
});
// it.skip('attribute wrappers', () => {
// equal(format('input[disabled. foo title=test]'), 'input disabled=true foo="" title="test"');
// equal(format('input[disabled. foo title=test]', null, { attributeWrap: 'round' }),
// 'input(disabled foo="" title="test")');
// });
it('nodes with text', () => {
equal(format('{Text 1}'), 'Text 1');
equal(format('span{Text 1}'), 'span Text 1');
equal(format('span{Text 1}>b{Text 2}'), 'span Text 1\n\tb Text 2');
equal(format('span{Text 1\nText 2}>b{Text 3}'), 'span\n\t| Text 1\n\t| Text 2\n\tb Text 3');
equal(format('div>span{Text 1\nText 2}>b{Text 3}'), 'div\n\tspan\n\t\t| Text 1\n\t\t| Text 2\n\t\tb Text 3');
});
it('generate fields', () => {
equal(format('a[href]', field), 'a href="${1}" ${2}');
equal(format('a[href]*2', field), 'a href="${1}" ${2}\na href="${3}" ${4}');
equal(format('{${0} ${1:foo} ${2:bar}}*2', field), '${1} ${2:foo} ${3:bar}${4} ${5:foo} ${6:bar}');
equal(format('{${0} ${1:foo} ${2:bar}}*2'), ' foo bar foo bar');
equal(format('ul>li*2', field), 'ul\n\tli ${1}\n\tli ${2}');
equal(format('div>img[src]/', field), 'div\n\timg src="${1}" alt="${2}"/');
});
});
});
<MSG> Support HAML output
<DFF> @@ -146,12 +146,12 @@ describe('Format', () => {
describe('HAML', () => {
const format = (abbr: string, config = defaultConfig) => haml(parse(abbr, config), config);
- it.only('basic', () => {
+ it('basic', () => {
equal(format('div#header>ul.nav>li[title=test].nav-item*2'),
- '#header\n\t%ul.nav\n\t\t%li.nav-item(title="test")\n\t\t%li.nav-item(title="test")');
+ '#header\n\t%ul.nav\n\t\t%li.nav-item(title="test") \n\t\t%li.nav-item(title="test") ');
equal(format('div#foo[data-n1=v1 title=test data-n2=v2].bar'),
- '#foo.bar(data-n1="v1" title="test" data-n2="v2")');
+ '#foo.bar(data-n1="v1" title="test" data-n2="v2") ');
let profile = createProfile({ compactBoolean: true });
equal(format('input[disabled. foo title=test]/', profile), '%input(type="text" disabled foo="" title="test")/');
@@ -159,5 +159,22 @@ describe('Format', () => {
profile = createProfile({ compactBoolean: false });
equal(format('input[disabled. foo title=test]/', profile), '%input(type="text" disabled=true foo="" title="test")/');
});
+
+ it('nodes with text', () => {
+ equal(format('{Text 1}'), 'Text 1');
+ equal(format('span{Text 1}'), '%span Text 1');
+ equal(format('span{Text 1}>b{Text 2}'), '%span Text 1\n\t%b Text 2');
+ equal(format('span{Text 1\nText 2}>b{Text 3}'), '%span\n\tText 1 |\n\tText 2 |\n\t%b Text 3');
+ equal(format('div>span{Text 1\nText 2\nText 123}>b{Text 3}'), '%div\n\t%span\n\t\tText 1 |\n\t\tText 2 |\n\t\tText 123 |\n\t\t%b Text 3');
+ });
+
+ it('generate fields', () => {
+ equal(format('a[href]', field), '%a(href="${1}") ${2}');
+ equal(format('a[href]*2', field), '%a(href="${1}") ${2}\n%a(href="${3}") ${4}');
+ equal(format('{${0} ${1:foo} ${2:bar}}*2', field), '${1} ${2:foo} ${3:bar}${4} ${5:foo} ${6:bar}');
+ equal(format('{${0} ${1:foo} ${2:bar}}*2'), ' foo bar foo bar');
+ equal(format('ul>li*2', field), '%ul\n\t%li ${1}\n\t%li ${2}');
+ equal(format('div>img[src]/', field), '%div\n\t%img(src="${1}" alt="${2}")/');
+ });
});
});
| 20 | Support HAML output | 3 | .ts | ts | mit | emmetio/emmet |
10071760 | <NME> jquery.meow.js
<BEF> (function ($, 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);
delete this.queue[timestamp];
},
size: function () {
var size = 0;
for (var timestamp in this.queue) {
if (this.queue.hasOwnProperty(timestamp)) { size += 1; }
}
return size;
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 $) {
if (options.message.is('input,textarea,select')) {
this.message = options.message.val();
} else {
this.message = options.message.text();
}
if (typeof this.title === 'undefined' && typeof options.message.attr('title') === 'string') {
this.title = options.message.attr('title');
}
}
if (typeof options.icon === 'string') {
this.icon = options.icon;
}
if (options.sticky) {
this.duration = Infinity;
} else {
this.duration = options.duration || 5000;
}
// Call callback if it's defined (this = meow object)
if (typeof options.beforeCreate === 'function') {
options.beforeCreate.call(that);
}
// Add the meow to the meow area
this.container.append($(window.document.createElement('div'))
.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()) {
that.destroy();
}
} else {
that.hovered = true;
that.manifest.addClass('hover');
$(document.createElement('a'))
.addClass('close')
.html('×')
.attr('href', 'javascript:;')
.click(function (e) {
e.preventDefault();
that.destroy();
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);
this.destroy = function () {
// 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();
meows.remove(that.timestamp);
if (typeof options.afterDestroy === 'function') {
options.afterDestroy.call(null);
}
if (meows.size() <= 0) {
$('#' + meow_area).remove();
if (typeof options.lastDestroyed === 'function') {
options.lastDestroyed.call(null);
}
}
});
});
};
<MSG> JSLinted
<DFF> @@ -37,8 +37,9 @@
delete this.queue[timestamp];
},
size: function () {
- var size = 0;
- for (var timestamp in this.queue) {
+ var timestamp,
+ size = 0;
+ for (timestamp in this.queue) {
if (this.queue.hasOwnProperty(timestamp)) { size += 1; }
}
return size;
@@ -135,7 +136,7 @@
$(document.createElement('a'))
.addClass('close')
.html('×')
- .attr('href', 'javascript:;')
+ .attr('href', '#close-meow-' + that.timestamp)
.click(function (e) {
e.preventDefault();
that.destroy();
@@ -176,22 +177,22 @@
this.destroy = function () {
// Call callback if it's defined (this = meow DOM element)
- if (typeof options.beforeDestroy === 'function') {
- options.beforeDestroy.call(that.manifest);
- }
+ 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();
meows.remove(that.timestamp);
if (typeof options.afterDestroy === 'function') {
- options.afterDestroy.call(null);
- }
- if (meows.size() <= 0) {
- $('#' + meow_area).remove();
- if (typeof options.lastDestroyed === 'function') {
- options.lastDestroyed.call(null);
- }
- }
+ options.afterDestroy.call(null);
+ }
+ if (meows.size() <= 0) {
+ $('#' + meow_area).remove();
+ if (typeof options.lastDestroyed === 'function') {
+ options.lastDestroyed.call(null);
+ }
+ }
});
});
};
| 15 | JSLinted | 14 | .js | meow | mit | zacstewart/Meow |
10071761 | <NME> jquery.meow.js
<BEF> (function ($, 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);
delete this.queue[timestamp];
},
size: function () {
var size = 0;
for (var timestamp in this.queue) {
if (this.queue.hasOwnProperty(timestamp)) { size += 1; }
}
return size;
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 $) {
if (options.message.is('input,textarea,select')) {
this.message = options.message.val();
} else {
this.message = options.message.text();
}
if (typeof this.title === 'undefined' && typeof options.message.attr('title') === 'string') {
this.title = options.message.attr('title');
}
}
if (typeof options.icon === 'string') {
this.icon = options.icon;
}
if (options.sticky) {
this.duration = Infinity;
} else {
this.duration = options.duration || 5000;
}
// Call callback if it's defined (this = meow object)
if (typeof options.beforeCreate === 'function') {
options.beforeCreate.call(that);
}
// Add the meow to the meow area
this.container.append($(window.document.createElement('div'))
.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()) {
that.destroy();
}
} else {
that.hovered = true;
that.manifest.addClass('hover');
$(document.createElement('a'))
.addClass('close')
.html('×')
.attr('href', 'javascript:;')
.click(function (e) {
e.preventDefault();
that.destroy();
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);
this.destroy = function () {
// 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();
meows.remove(that.timestamp);
if (typeof options.afterDestroy === 'function') {
options.afterDestroy.call(null);
}
if (meows.size() <= 0) {
$('#' + meow_area).remove();
if (typeof options.lastDestroyed === 'function') {
options.lastDestroyed.call(null);
}
}
});
});
};
<MSG> JSLinted
<DFF> @@ -37,8 +37,9 @@
delete this.queue[timestamp];
},
size: function () {
- var size = 0;
- for (var timestamp in this.queue) {
+ var timestamp,
+ size = 0;
+ for (timestamp in this.queue) {
if (this.queue.hasOwnProperty(timestamp)) { size += 1; }
}
return size;
@@ -135,7 +136,7 @@
$(document.createElement('a'))
.addClass('close')
.html('×')
- .attr('href', 'javascript:;')
+ .attr('href', '#close-meow-' + that.timestamp)
.click(function (e) {
e.preventDefault();
that.destroy();
@@ -176,22 +177,22 @@
this.destroy = function () {
// Call callback if it's defined (this = meow DOM element)
- if (typeof options.beforeDestroy === 'function') {
- options.beforeDestroy.call(that.manifest);
- }
+ 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();
meows.remove(that.timestamp);
if (typeof options.afterDestroy === 'function') {
- options.afterDestroy.call(null);
- }
- if (meows.size() <= 0) {
- $('#' + meow_area).remove();
- if (typeof options.lastDestroyed === 'function') {
- options.lastDestroyed.call(null);
- }
- }
+ options.afterDestroy.call(null);
+ }
+ if (meows.size() <= 0) {
+ $('#' + meow_area).remove();
+ if (typeof options.lastDestroyed === 'function') {
+ options.lastDestroyed.call(null);
+ }
+ }
});
});
};
| 15 | JSLinted | 14 | .js | meow | mit | zacstewart/Meow |
10071762 | <NME> version.rb
<BEF> # frozen_string_literal: true
module Split
MAJOR = 1
MINOR = 7
PATCH = 0
VERSION = [MAJOR, MINOR, PATCH].join('.')
end
<MSG> v2.0.0
<DFF> @@ -1,7 +1,7 @@
# frozen_string_literal: true
module Split
- MAJOR = 1
- MINOR = 7
+ MAJOR = 2
+ MINOR = 0
PATCH = 0
VERSION = [MAJOR, MINOR, PATCH].join('.')
end
| 2 | v2.0.0 | 2 | .rb | rb | mit | splitrb/split |
10071763 | <NME> version.rb
<BEF> # frozen_string_literal: true
module Split
MAJOR = 1
MINOR = 7
PATCH = 0
VERSION = [MAJOR, MINOR, PATCH].join('.')
end
<MSG> v2.0.0
<DFF> @@ -1,7 +1,7 @@
# frozen_string_literal: true
module Split
- MAJOR = 1
- MINOR = 7
+ MAJOR = 2
+ MINOR = 0
PATCH = 0
VERSION = [MAJOR, MINOR, PATCH].join('.')
end
| 2 | v2.0.0 | 2 | .rb | rb | mit | splitrb/split |
10071764 | <NME> version.rb
<BEF> # frozen_string_literal: true
module Split
MAJOR = 1
MINOR = 7
PATCH = 0
VERSION = [MAJOR, MINOR, PATCH].join('.')
end
<MSG> v2.0.0
<DFF> @@ -1,7 +1,7 @@
# frozen_string_literal: true
module Split
- MAJOR = 1
- MINOR = 7
+ MAJOR = 2
+ MINOR = 0
PATCH = 0
VERSION = [MAJOR, MINOR, PATCH].join('.')
end
| 2 | v2.0.0 | 2 | .rb | rb | mit | splitrb/split |
10071765 | <NME> trial.rb
<BEF> # frozen_string_literal: true
module Split
class Trial
attr_accessor :goals
attr_accessor :experiment
attr_writer :metadata
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
end
end
@user[@experiment.key] = alternative.name unless @experiment.has_winner? || !should_store_alternative? || (new_participant && @experiment.cohorting_disabled?)
@alternative_choosen = true
run_callback context, Split.configuration.on_trial unless @options[:disabled] || Split.configuration.disabled? || (new_participant && @experiment.cohorting_disabled?)
alternative
end
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> disable cohorting revision
<DFF> @@ -85,9 +85,11 @@ module Split
end
end
- @user[@experiment.key] = alternative.name unless @experiment.has_winner? || !should_store_alternative? || (new_participant && @experiment.cohorting_disabled?)
+ 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_choosen = true
- run_callback context, Split.configuration.on_trial unless @options[:disabled] || Split.configuration.disabled? || (new_participant && @experiment.cohorting_disabled?)
+ run_callback context, Split.configuration.on_trial unless @options[:disabled] || Split.configuration.disabled? || new_participant_and_cohorting_disabled
alternative
end
| 4 | disable cohorting revision | 2 | .rb | rb | mit | splitrb/split |
10071766 | <NME> trial.rb
<BEF> # frozen_string_literal: true
module Split
class Trial
attr_accessor :goals
attr_accessor :experiment
attr_writer :metadata
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
end
end
@user[@experiment.key] = alternative.name unless @experiment.has_winner? || !should_store_alternative? || (new_participant && @experiment.cohorting_disabled?)
@alternative_choosen = true
run_callback context, Split.configuration.on_trial unless @options[:disabled] || Split.configuration.disabled? || (new_participant && @experiment.cohorting_disabled?)
alternative
end
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> disable cohorting revision
<DFF> @@ -85,9 +85,11 @@ module Split
end
end
- @user[@experiment.key] = alternative.name unless @experiment.has_winner? || !should_store_alternative? || (new_participant && @experiment.cohorting_disabled?)
+ 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_choosen = true
- run_callback context, Split.configuration.on_trial unless @options[:disabled] || Split.configuration.disabled? || (new_participant && @experiment.cohorting_disabled?)
+ run_callback context, Split.configuration.on_trial unless @options[:disabled] || Split.configuration.disabled? || new_participant_and_cohorting_disabled
alternative
end
| 4 | disable cohorting revision | 2 | .rb | rb | mit | splitrb/split |
10071767 | <NME> trial.rb
<BEF> # frozen_string_literal: true
module Split
class Trial
attr_accessor :goals
attr_accessor :experiment
attr_writer :metadata
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
end
end
@user[@experiment.key] = alternative.name unless @experiment.has_winner? || !should_store_alternative? || (new_participant && @experiment.cohorting_disabled?)
@alternative_choosen = true
run_callback context, Split.configuration.on_trial unless @options[:disabled] || Split.configuration.disabled? || (new_participant && @experiment.cohorting_disabled?)
alternative
end
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> disable cohorting revision
<DFF> @@ -85,9 +85,11 @@ module Split
end
end
- @user[@experiment.key] = alternative.name unless @experiment.has_winner? || !should_store_alternative? || (new_participant && @experiment.cohorting_disabled?)
+ 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_choosen = true
- run_callback context, Split.configuration.on_trial unless @options[:disabled] || Split.configuration.disabled? || (new_participant && @experiment.cohorting_disabled?)
+ run_callback context, Split.configuration.on_trial unless @options[:disabled] || Split.configuration.disabled? || new_participant_and_cohorting_disabled
alternative
end
| 4 | disable cohorting revision | 2 | .rb | rb | mit | splitrb/split |
10071768 | <NME> helper.rb
<BEF> module Split
module Helper
def ab_test(experiment_name, *alternatives, &block)
experiment = Split::Experiment.find_or_create(experiment_name, *alternatives)
if experiment.winner
ret = experiment.winner.name
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
end
end
ret = yield(ret) if block_given?
ret
end
def finished(experiment_name)
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
def split_generically_disabled?
defined?(params) && params["SPLIT_DISABLE"]
end
def ab_user
@ab_user ||= User.new(self)
end
def exclude_visitor?
defined?(request) && (instance_exec(request, &Split.configuration.ignore_filter) || is_ignored_ip_address? || is_robot? || is_preview?)
end
def is_robot?
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> ab_test can now be passed a block in a rails view as well, closes #4
<DFF> @@ -1,6 +1,6 @@
module Split
module Helper
- def ab_test(experiment_name, *alternatives, &block)
+ def ab_test(experiment_name, *alternatives)
experiment = Split::Experiment.find_or_create(experiment_name, *alternatives)
if experiment.winner
ret = experiment.winner.name
@@ -21,8 +21,17 @@ module Split
end
end
- ret = yield(ret) if block_given?
- ret
+ if block_given?
+ if defined?(capture) # a block in a rails view
+ block = Proc.new { yield(ret) }
+ concat(capture(ret, &block))
+ false
+ else
+ yield(ret)
+ end
+ else
+ ret
+ end
end
def finished(experiment_name)
| 12 | ab_test can now be passed a block in a rails view as well, closes #4 | 3 | .rb | rb | mit | splitrb/split |
10071769 | <NME> helper.rb
<BEF> module Split
module Helper
def ab_test(experiment_name, *alternatives, &block)
experiment = Split::Experiment.find_or_create(experiment_name, *alternatives)
if experiment.winner
ret = experiment.winner.name
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
end
end
ret = yield(ret) if block_given?
ret
end
def finished(experiment_name)
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
def split_generically_disabled?
defined?(params) && params["SPLIT_DISABLE"]
end
def ab_user
@ab_user ||= User.new(self)
end
def exclude_visitor?
defined?(request) && (instance_exec(request, &Split.configuration.ignore_filter) || is_ignored_ip_address? || is_robot? || is_preview?)
end
def is_robot?
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> ab_test can now be passed a block in a rails view as well, closes #4
<DFF> @@ -1,6 +1,6 @@
module Split
module Helper
- def ab_test(experiment_name, *alternatives, &block)
+ def ab_test(experiment_name, *alternatives)
experiment = Split::Experiment.find_or_create(experiment_name, *alternatives)
if experiment.winner
ret = experiment.winner.name
@@ -21,8 +21,17 @@ module Split
end
end
- ret = yield(ret) if block_given?
- ret
+ if block_given?
+ if defined?(capture) # a block in a rails view
+ block = Proc.new { yield(ret) }
+ concat(capture(ret, &block))
+ false
+ else
+ yield(ret)
+ end
+ else
+ ret
+ end
end
def finished(experiment_name)
| 12 | ab_test can now be passed a block in a rails view as well, closes #4 | 3 | .rb | rb | mit | splitrb/split |
10071770 | <NME> helper.rb
<BEF> module Split
module Helper
def ab_test(experiment_name, *alternatives, &block)
experiment = Split::Experiment.find_or_create(experiment_name, *alternatives)
if experiment.winner
ret = experiment.winner.name
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
end
end
ret = yield(ret) if block_given?
ret
end
def finished(experiment_name)
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
def split_generically_disabled?
defined?(params) && params["SPLIT_DISABLE"]
end
def ab_user
@ab_user ||= User.new(self)
end
def exclude_visitor?
defined?(request) && (instance_exec(request, &Split.configuration.ignore_filter) || is_ignored_ip_address? || is_robot? || is_preview?)
end
def is_robot?
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> ab_test can now be passed a block in a rails view as well, closes #4
<DFF> @@ -1,6 +1,6 @@
module Split
module Helper
- def ab_test(experiment_name, *alternatives, &block)
+ def ab_test(experiment_name, *alternatives)
experiment = Split::Experiment.find_or_create(experiment_name, *alternatives)
if experiment.winner
ret = experiment.winner.name
@@ -21,8 +21,17 @@ module Split
end
end
- ret = yield(ret) if block_given?
- ret
+ if block_given?
+ if defined?(capture) # a block in a rails view
+ block = Proc.new { yield(ret) }
+ concat(capture(ret, &block))
+ false
+ else
+ yield(ret)
+ end
+ else
+ ret
+ end
end
def finished(experiment_name)
| 12 | ab_test can now be passed a block in a rails view as well, closes #4 | 3 | .rb | rb | mit | splitrb/split |
10071771 | <NME> demo.js
<BEF> ADDFILE
<MSG> Rename elements to components
<DFF> @@ -0,0 +1,2 @@
+angular
+ .module('demo', ['semantic.ui.components.divider']);
| 2 | Rename elements to components | 0 | .js | js | mit | Semantic-Org/Semantic-UI-Angular |
10071772 | <NME> demo.js
<BEF> ADDFILE
<MSG> Rename elements to components
<DFF> @@ -0,0 +1,2 @@
+angular
+ .module('demo', ['semantic.ui.components.divider']);
| 2 | Rename elements to components | 0 | .js | js | mit | Semantic-Org/Semantic-UI-Angular |
10071773 | <NME> demo.js
<BEF> ADDFILE
<MSG> Rename elements to components
<DFF> @@ -0,0 +1,2 @@
+angular
+ .module('demo', ['semantic.ui.components.divider']);
| 2 | Rename elements to components | 0 | .js | js | mit | Semantic-Org/Semantic-UI-Angular |
10071774 | <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)
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
[](http://badge.fury.io/rb/split)
[](http://travis-ci.org/andrew/split)
[](https://gemnasium.com/andrew/split)
[](https://codeclimate.com/github/andrew/split)
[](https://coveralls.io/r/andrew/split)
## Requirements
## 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> Fix travis badges
<DFF> @@ -7,10 +7,10 @@ Split is heavily inspired by the Abingo and Vanity rails ab testing plugins and
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
[](http://badge.fury.io/rb/split)
-[](http://travis-ci.org/andrew/split)
-[](https://gemnasium.com/andrew/split)
-[](https://codeclimate.com/github/andrew/split)
-[](https://coveralls.io/r/andrew/split)
+[](http://travis-ci.org/splitrb/split)
+[](https://gemnasium.com/splitrb/split)
+[](https://codeclimate.com/github/splitrb/split)
+[](https://coveralls.io/r/splitrb/split)
## Requirements
| 4 | Fix travis badges | 4 | .md | md | mit | splitrb/split |
10071775 | <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)
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
[](http://badge.fury.io/rb/split)
[](http://travis-ci.org/andrew/split)
[](https://gemnasium.com/andrew/split)
[](https://codeclimate.com/github/andrew/split)
[](https://coveralls.io/r/andrew/split)
## Requirements
## 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> Fix travis badges
<DFF> @@ -7,10 +7,10 @@ Split is heavily inspired by the Abingo and Vanity rails ab testing plugins and
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
[](http://badge.fury.io/rb/split)
-[](http://travis-ci.org/andrew/split)
-[](https://gemnasium.com/andrew/split)
-[](https://codeclimate.com/github/andrew/split)
-[](https://coveralls.io/r/andrew/split)
+[](http://travis-ci.org/splitrb/split)
+[](https://gemnasium.com/splitrb/split)
+[](https://codeclimate.com/github/splitrb/split)
+[](https://coveralls.io/r/splitrb/split)
## Requirements
| 4 | Fix travis badges | 4 | .md | md | mit | splitrb/split |
10071776 | <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)
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
[](http://badge.fury.io/rb/split)
[](http://travis-ci.org/andrew/split)
[](https://gemnasium.com/andrew/split)
[](https://codeclimate.com/github/andrew/split)
[](https://coveralls.io/r/andrew/split)
## Requirements
## 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> Fix travis badges
<DFF> @@ -7,10 +7,10 @@ Split is heavily inspired by the Abingo and Vanity rails ab testing plugins and
Split is designed to be hacker friendly, allowing for maximum customisation and extensibility.
[](http://badge.fury.io/rb/split)
-[](http://travis-ci.org/andrew/split)
-[](https://gemnasium.com/andrew/split)
-[](https://codeclimate.com/github/andrew/split)
-[](https://coveralls.io/r/andrew/split)
+[](http://travis-ci.org/splitrb/split)
+[](https://gemnasium.com/splitrb/split)
+[](https://codeclimate.com/github/splitrb/split)
+[](https://coveralls.io/r/splitrb/split)
## Requirements
| 4 | Fix travis badges | 4 | .md | md | mit | splitrb/split |
10071777 | <NME> .jshintrc
<BEF> ADDFILE
<MSG> chore(.jshintrc): Added .jshintrc
<DFF> @@ -0,0 +1,30 @@
+{
+ "browser": true,
+ "bitwise": true,
+ "curly": true,
+ "eqeqeq": true,
+ "immed": true,
+ "indent": 2,
+ "newcap": true,
+ "noarg": true,
+ "regexp": true,
+ "undef": true,
+ "unused": true,
+ "maxlen": 120,
+ "strict": true,
+ "trailing": true,
+ "smarttabs": true,
+ "globals": {
+ "angular": false,
+ "describe": false,
+ "it": false,
+ "beforeEach": false,
+ "afterEach": false,
+ "inject": false,
+ "module": false,
+ "browser": false,
+ "expect": false,
+ "_": false,
+ "$": false
+ }
+}
\ No newline at end of file
| 30 | chore(.jshintrc): Added .jshintrc | 0 | jshintrc | mit | Semantic-Org/Semantic-UI-Angular |
|
10071778 | <NME> .jshintrc
<BEF> ADDFILE
<MSG> chore(.jshintrc): Added .jshintrc
<DFF> @@ -0,0 +1,30 @@
+{
+ "browser": true,
+ "bitwise": true,
+ "curly": true,
+ "eqeqeq": true,
+ "immed": true,
+ "indent": 2,
+ "newcap": true,
+ "noarg": true,
+ "regexp": true,
+ "undef": true,
+ "unused": true,
+ "maxlen": 120,
+ "strict": true,
+ "trailing": true,
+ "smarttabs": true,
+ "globals": {
+ "angular": false,
+ "describe": false,
+ "it": false,
+ "beforeEach": false,
+ "afterEach": false,
+ "inject": false,
+ "module": false,
+ "browser": false,
+ "expect": false,
+ "_": false,
+ "$": false
+ }
+}
\ No newline at end of file
| 30 | chore(.jshintrc): Added .jshintrc | 0 | jshintrc | mit | Semantic-Org/Semantic-UI-Angular |
|
10071779 | <NME> .jshintrc
<BEF> ADDFILE
<MSG> chore(.jshintrc): Added .jshintrc
<DFF> @@ -0,0 +1,30 @@
+{
+ "browser": true,
+ "bitwise": true,
+ "curly": true,
+ "eqeqeq": true,
+ "immed": true,
+ "indent": 2,
+ "newcap": true,
+ "noarg": true,
+ "regexp": true,
+ "undef": true,
+ "unused": true,
+ "maxlen": 120,
+ "strict": true,
+ "trailing": true,
+ "smarttabs": true,
+ "globals": {
+ "angular": false,
+ "describe": false,
+ "it": false,
+ "beforeEach": false,
+ "afterEach": false,
+ "inject": false,
+ "module": false,
+ "browser": false,
+ "expect": false,
+ "_": false,
+ "$": false
+ }
+}
\ No newline at end of file
| 30 | chore(.jshintrc): Added .jshintrc | 0 | jshintrc | mit | Semantic-Org/Semantic-UI-Angular |
|
10071780 | <NME> README.md
<BEF> Semantic-UI-Angular
===================
[](https://gitter.im/Semantic-Org/Semantic-UI-Angular?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
[](https://travis-ci.org/Semantic-Org/Semantic-UI-Angular)
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular)
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular#info=devDependencies)
Status
------
Working to open the first release.
Current progress:
-----------------
At this moment we have following directives:
- sm-button;
- sm-checkbox;
- sm-divider;
- sm-radio-group and sm-radio-button;
- sm-rating.
## To do:
All tasks for the release of the first release are the issues. https://github.com/Semantic-Org/Semantic-UI-Angular/issues
<MSG> docs(README): Update README.md
<DFF> @@ -6,20 +6,42 @@ Semantic-UI-Angular
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular)
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular#info=devDependencies)
+**Semantic-UI-Angular** is a pure AngularJS 1.x set of directives for Semantic-UI components.
+As soon as Angular 2 will get better animations support, we will consider creating (or merging some existing project if there will be one) Angular 2 components as well.
+We've decided to use TypeScript as a step to Angular 2 friendly environment.
+
Status
------
-Working to open the first release.
+**Work in progress**
+
+We are working on setting up proper environment, contribution guidelines and everything else for comfortable community contributions.
+Once we release first `alpha.0` we are happy to get community help.
+
+
+Support
+-------
+We support AngularJS 1.4.8 version.
+
+
+Building Semantic-UI-Angular
+----------------------------
+You have to have `nodejs` installed before running following commands.
-Current progress:
------------------
-At this moment we have following directives:
+```
+npm install
+npm run build
+```
- - sm-button;
- - sm-checkbox;
- - sm-divider;
- - sm-radio-group and sm-radio-button;
- - sm-rating.
+The distribution packages will be stored in `dist` folder.
-## To do:
-All tasks for the release of the first release are the issues. https://github.com/Semantic-Org/Semantic-UI-Angular/issues
+Running tests
+-------------
+Single run:
+```
+npm test
+```
+Dev mode:
+```
+npm run test-dev
+```
| 33 | docs(README): Update README.md | 11 | .md | md | mit | Semantic-Org/Semantic-UI-Angular |
10071781 | <NME> README.md
<BEF> Semantic-UI-Angular
===================
[](https://gitter.im/Semantic-Org/Semantic-UI-Angular?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
[](https://travis-ci.org/Semantic-Org/Semantic-UI-Angular)
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular)
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular#info=devDependencies)
Status
------
Working to open the first release.
Current progress:
-----------------
At this moment we have following directives:
- sm-button;
- sm-checkbox;
- sm-divider;
- sm-radio-group and sm-radio-button;
- sm-rating.
## To do:
All tasks for the release of the first release are the issues. https://github.com/Semantic-Org/Semantic-UI-Angular/issues
<MSG> docs(README): Update README.md
<DFF> @@ -6,20 +6,42 @@ Semantic-UI-Angular
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular)
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular#info=devDependencies)
+**Semantic-UI-Angular** is a pure AngularJS 1.x set of directives for Semantic-UI components.
+As soon as Angular 2 will get better animations support, we will consider creating (or merging some existing project if there will be one) Angular 2 components as well.
+We've decided to use TypeScript as a step to Angular 2 friendly environment.
+
Status
------
-Working to open the first release.
+**Work in progress**
+
+We are working on setting up proper environment, contribution guidelines and everything else for comfortable community contributions.
+Once we release first `alpha.0` we are happy to get community help.
+
+
+Support
+-------
+We support AngularJS 1.4.8 version.
+
+
+Building Semantic-UI-Angular
+----------------------------
+You have to have `nodejs` installed before running following commands.
-Current progress:
------------------
-At this moment we have following directives:
+```
+npm install
+npm run build
+```
- - sm-button;
- - sm-checkbox;
- - sm-divider;
- - sm-radio-group and sm-radio-button;
- - sm-rating.
+The distribution packages will be stored in `dist` folder.
-## To do:
-All tasks for the release of the first release are the issues. https://github.com/Semantic-Org/Semantic-UI-Angular/issues
+Running tests
+-------------
+Single run:
+```
+npm test
+```
+Dev mode:
+```
+npm run test-dev
+```
| 33 | docs(README): Update README.md | 11 | .md | md | mit | Semantic-Org/Semantic-UI-Angular |
10071782 | <NME> README.md
<BEF> Semantic-UI-Angular
===================
[](https://gitter.im/Semantic-Org/Semantic-UI-Angular?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
[](https://travis-ci.org/Semantic-Org/Semantic-UI-Angular)
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular)
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular#info=devDependencies)
Status
------
Working to open the first release.
Current progress:
-----------------
At this moment we have following directives:
- sm-button;
- sm-checkbox;
- sm-divider;
- sm-radio-group and sm-radio-button;
- sm-rating.
## To do:
All tasks for the release of the first release are the issues. https://github.com/Semantic-Org/Semantic-UI-Angular/issues
<MSG> docs(README): Update README.md
<DFF> @@ -6,20 +6,42 @@ Semantic-UI-Angular
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular)
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular#info=devDependencies)
+**Semantic-UI-Angular** is a pure AngularJS 1.x set of directives for Semantic-UI components.
+As soon as Angular 2 will get better animations support, we will consider creating (or merging some existing project if there will be one) Angular 2 components as well.
+We've decided to use TypeScript as a step to Angular 2 friendly environment.
+
Status
------
-Working to open the first release.
+**Work in progress**
+
+We are working on setting up proper environment, contribution guidelines and everything else for comfortable community contributions.
+Once we release first `alpha.0` we are happy to get community help.
+
+
+Support
+-------
+We support AngularJS 1.4.8 version.
+
+
+Building Semantic-UI-Angular
+----------------------------
+You have to have `nodejs` installed before running following commands.
-Current progress:
------------------
-At this moment we have following directives:
+```
+npm install
+npm run build
+```
- - sm-button;
- - sm-checkbox;
- - sm-divider;
- - sm-radio-group and sm-radio-button;
- - sm-rating.
+The distribution packages will be stored in `dist` folder.
-## To do:
-All tasks for the release of the first release are the issues. https://github.com/Semantic-Org/Semantic-UI-Angular/issues
+Running tests
+-------------
+Single run:
+```
+npm test
+```
+Dev mode:
+```
+npm run test-dev
+```
| 33 | docs(README): Update README.md | 11 | .md | md | mit | Semantic-Org/Semantic-UI-Angular |
10071783 | <NME> index.ts
<BEF> import abbreviation, { CSSAbbreviation, CSSProperty, CSSValue, Literal, Value, Field, FunctionCall } from '@emmetio/css-abbreviation';
import { Config, SnippetsMap } from '../config';
import createSnippet, { CSSSnippet, nest, getKeywords, CSSSnippetType, CSSSnippetRaw, CSSSnippetProperty, CSSKeywordRef } from './snippets';
import calculateScore from './score';
type MatchInput = CSSSnippet | CSSKeywordRef;
/**
* Parses given Emmet abbreviation into a final abbreviation tree with all
/** Include all possible snippets in match */
Global = '@@global',
/** Include raw snippets only (e.g. no properties) in abbreviation match */
Section = '@@section',
abbr = abbreviation(abbr);
}
// Run abbreviation resolve in two passes:
// 1. Map each node to snippets, which are abbreviations as well. A single snippet
// may produce multiple nodes
// 2. Transform every resolved node
// walk(abbr, snippets, config);
// walk(abbr, transform, config);
return abbr;
}
/**
* Converts given raw snippets into internal snippets representation
*/
if (config.cache) {
config.cache.stylesheetSnippets = snippets;
}
if (typeof abbr === 'string') {
abbr = abbreviation(abbr, { value: isValueScope(config) });
}
const filteredSnippets = getSnippetsForScope(snippets, config);
* keyword aliases from node value
*/
function resolveNode(node: CSSProperty, snippets: CSSSnippet[], config: Config): CSSProperty {
// TODO implement
// if (config.context) {
// // Resolve as value of given CSS property
// return resolveAsPropertyValue(node, snippets.find(s => s.property === config.context), config);
// }
const snippet = findBestMatch(node.name!, snippets, config.options['stylesheet.fuzzySearchMinScore']);
if (!snippet) {
// Edge case: `!important` snippet
return node.important ? setNodeAsText(node, '!important') : node;
}
return snippet.type === CSSSnippetType.Property
? resolveAsProperty(node, snippet, config)
: resolveAsSnippet(node, snippet);
}
/**
function resolveNode(node: CSSProperty, snippets: CSSSnippet[], config: Config): CSSProperty {
if (!resolveGradient(node, config)) {
const score = config.options['stylesheet.fuzzySearchMinScore'];
const abbr = node.name!;
node.name = snippet.property;
// Resolve keyword shortcuts
const keywords = getKeywords(snippet);
if (!node.value.length) {
// No value defined, try to resolve unmatched part as a keyword alias
const kw = findBestMatch(getUnmatchedPart(abbr, snippet.key), keywords);
if (kw) {
node.value = snippet.value[kw.index]!;
} else if (snippet.value.length) {
const defaultValue = snippet.value[0]!;
node.value = defaultValue.some(hasField)
? defaultValue
: defaultValue.map(n => wrapWithField(n));
}
} else {
// replace keyword aliases in current node value
for (let i = 0, token; i < node.value.value.length; i++) {
token = node.value.value[i];
if (token === '!') {
token = `${!i ? '${1} ' : ''}!important`;
} else if (isKeyword(token)) {
token = findBestMatch(token.value, keywords)
|| findBestMatch(token.value, globalKeywords)
|| token;
} else if (isNumericValue(token)) {
token = resolveNumericValue(node.name, token, formatOptions);
}
node.value.value[i] = token;
}
}
// Resolve numeric values for CSS properties only
resolveNumericValue(node, config);
}
return node;
}
/**
* Resolves CSS gradient shortcut from given property, if possible
*/
function resolveGradient(node: CSSProperty, config: Config): boolean {
* Resolves given parsed abbreviation node as property value of given `snippet`:
* tries to find best matching keyword from CSS snippet
*/
function resolveAsPropertyValue(node: CSSProperty, snippet: CSSSnippet, config: Config): CSSProperty {
// Possible resolved result for CSS property:
// * matched snippet keyword
// * color (starts with #)
// Everything else should result the same as input abbreviation
let keywords = config.options['stylesheet.keywords'].slice();
if (snippet) {
keywords = keywords.concat(getKeywords(snippet));
}
const values = [node.name].concat(node.value.value)
.filter(Boolean)
.map(value => {
if (typeof value === 'string' || value.type === 'keyword') {
value = String(value);
return findBestMatch(value, keywords, null, config.fuzzySearchMinScore) || value;
}
return value;
});
node.name = null;
node.value.value = values;
return node;
}
type: 'FunctionCall',
name: 'linear-gradient',
arguments: [cssValue(field(0, ''))]
};
} else {
gradientFn = {
...gradientFn,
name: 'linear-gradient'
};
}
if (!config.context) {
node.name = 'background-image';
}
node.value = [cssValue(gradientFn)];
return true;
}
return false;
}
/**
* Resolves given parsed abbreviation node as CSS property
*/
function resolveAsProperty(node: CSSProperty, snippet: CSSSnippetProperty, config: Config): CSSProperty {
const abbr = node.name!;
// Check for unmatched part of abbreviation
// For example, in `dib` abbreviation the matched part is `d` and `ib` should
// be considered as inline value. If unmatched fragment exists, we should check
// if it matches actual value of snippet. If either explicit value is specified
// or unmatched fragment did not resolve to to a keyword, we should consider
// matched snippet as invalid
const inlineValue = getUnmatchedPart(abbr, snippet.key);
}
function getScoringPart(item: MatchInput): string {
return (item as CSSKeywordRef).keyword || (item as CSSSnippet).key;
}
node.value.push(cssValue(kw));
}
node.name = snippet.property;
if (node.value.length) {
// Replace keyword alias from current abbreviation node with matched keyword
resolveValueKeywords(node, config, snippet);
} else if (snippet.value.length) {
const defaultValue = snippet.value[0]!;
// https://github.com/emmetio/emmet/issues/558
// We should auto-select inserted value only if there’s multiple value
// choice
return '';
}
/**
* Check if given CSS value token is a keyword
* @param {*} token
* @return {Boolean}
*/
function isKeyword(token) {
return tokenTypeOf(token, 'keyword');
}
/**
* Check if given CSS value token is a numeric value
* @param {*} token
* @return {Boolean}
*/
function isNumericValue(token) {
return tokenTypeOf(token, 'numeric');
}
function tokenTypeOf(token, type) {
return token && typeof token === 'object' && token.type === type;
}
/**
* Resolves numeric value for given CSS property
* @param {String} property CSS property name
* @param {NumericValue} token CSS numeric value token
* @param {Object} formatOptions Formatting options for units
* @return {NumericValue}
*/
function resolveNumericValue(property, token, formatOptions) {
if (token.unit) {
token.unit = formatOptions.unitAliases[token.unit] || token.unit;
} else if (token.value !== 0 && unitlessProperties.indexOf(property) === -1) {
// use `px` for integers, `em` for floats
// NB: num|0 is a quick alternative to Math.round(0)
token.unit = token.value === (token.value | 0) ? formatOptions.intUnit : formatOptions.floatUnit;
}
return token;
}
/**
return node;
}
/**
* Finds best matching item from `items` array
* @param abbr Abbreviation to match
* @param items List of items for match
* @param minScore The minimum score the best matched item should have to be a valid match.
*/
export function findBestMatch<T extends MatchInput>(abbr: string, items: T[], minScore = 0, partialMatch = false): T | null {
let matchedItem: T | null = null;
let maxScore = 0;
for (const item of items) {
const score = calculateScore(abbr, getScoringPart(item), partialMatch);
if (score === 1) {
// direct hit, no need to look further
return item;
}
if (score && score >= maxScore) {
maxScore = score;
matchedItem = item;
}
}
return maxScore >= minScore ? matchedItem : null;
}
function getScoringPart(item: MatchInput): string {
return typeof item === 'string' ? item : item.key;
}
/**
* Returns a part of `abbr` that wasn’t directly matched against `str`.
* For example, if abbreviation `poas` is matched against `position`,
* the unmatched part will be `as` since `a` wasn’t found in string stream
*/
function getUnmatchedPart(abbr: string, str: string): string {
for (let i = 0, lastPos = 0; i < abbr.length; i++) {
lastPos = str.indexOf(abbr[i], lastPos);
if (lastPos === -1) {
return abbr.slice(i);
}
lastPos++;
}
return '';
}
/**
* Resolves given keyword shorthand into matched snippet keyword or global keyword,
* if possible
*/
function resolveKeyword(kw: string, config: Config, snippet?: CSSSnippetProperty, minScore?: number): Literal | FunctionCall | null {
let ref: string | null;
if (snippet) {
if (ref = findBestMatch(kw, Object.keys(snippet.keywords), minScore)) {
return snippet.keywords[ref];
}
for (const dep of snippet.dependencies) {
if (ref = findBestMatch(kw, Object.keys(dep.keywords), minScore)) {
return dep.keywords[ref];
}
}
}
if (ref = findBestMatch(kw, config.options['stylesheet.keywords'], minScore)) {
return literal(ref);
}
return null;
}
/**
* Resolves numeric values in given abbreviation node
*/
function resolveNumericValue(node: CSSProperty, config: Config) {
const aliases = config.options['stylesheet.unitAliases'];
const unitless = config.options['stylesheet.unitless'];
for (const v of node.value) {
for (const t of v.value) {
if (t.type === 'NumberValue') {
if (t.unit) {
t.unit = aliases[t.unit] || t.unit;
} else if (t.value !== 0 && !unitless.includes(node.name!)) {
t.unit = t.rawValue.includes('.')
? config.options['stylesheet.floatUnit']
: config.options['stylesheet.intUnit'];
}
}
}
}
}
/**
* Constructs CSS value token
*/
function cssValue(...args: Value[]): CSSValue {
return {
type: 'CSSValue',
value: args
};
}
/**
* Constructs literal token
*/
function literal(value: string): Literal {
return { type: 'Literal', value };
}
/**
* Constructs field token
*/
function field(index: number, name: string): Field {
return { type: 'Field', index, name };
}
/**
* Check if given value contains fields
*/
function hasField(value: CSSValue): boolean {
for (const v of value.value) {
if (v.type === 'Field' || (v.type === 'FunctionCall' && v.arguments.some(hasField))) {
return true;
}
}
return false;
}
interface WrapState {
index: number;
}
/**
* Wraps tokens of given abbreviation with fields
*/
function wrapWithField(node: CSSValue, config: Config, state: WrapState = { index: 1 }): CSSValue {
let value: Value[] = [];
for (const v of node.value) {
switch (v.type) {
case 'ColorValue':
value.push(field(state.index++, color(v, config.options['stylesheet.shortHex'])));
break;
case 'Literal':
value.push(field(state.index++, v.value));
break;
case 'NumberValue':
value.push(field(state.index++, `${v.value}${v.unit}`));
break;
case 'StringValue':
const q = v.quote === 'single' ? '\'' : '"';
value.push(field(state.index++, q + v.value + q));
break;
case 'FunctionCall':
value.push(field(state.index++, v.name), literal('('));
for (let i = 0, il = v.arguments.length; i < il; i++) {
value = value.concat(wrapWithField(v.arguments[i], config, state).value);
if (i !== il - 1) {
value.push(literal(', '));
}
}
value.push(literal(')'));
break;
default:
value.push(v);
}
}
return {...node, value };
}
/**
* Check if abbreviation should be expanded in CSS value context
*/
function isValueScope(config: Config): boolean {
if (config.context) {
return config.context.name === CSSAbbreviationScope.Value || !config.context.name.startsWith('@@');
}
return false;
}
/**
* Returns snippets for given scope
*/
function getSnippetsForScope(snippets: CSSSnippet[], config: Config): CSSSnippet[] {
if (config.context) {
if (config.context.name === CSSAbbreviationScope.Section) {
return snippets.filter(s => s.type === CSSSnippetType.Raw);
}
if (config.context.name === CSSAbbreviationScope.Property) {
return snippets.filter(s => s.type === CSSSnippetType.Property);
}
}
return snippets;
}
<MSG> Working on stylesheet resolving and output
<DFF> @@ -3,7 +3,7 @@ import { Config, SnippetsMap } from '../config';
import createSnippet, { CSSSnippet, nest, getKeywords, CSSSnippetType, CSSSnippetRaw, CSSSnippetProperty, CSSKeywordRef } from './snippets';
import calculateScore from './score';
-type MatchInput = CSSSnippet | CSSKeywordRef;
+type MatchInput = CSSSnippet | CSSKeywordRef | string;
/**
* Parses given Emmet abbreviation into a final abbreviation tree with all
@@ -14,15 +14,15 @@ export default function parse(abbr: string | CSSAbbreviation, config: Config, sn
abbr = abbreviation(abbr);
}
- // Run abbreviation resolve in two passes:
- // 1. Map each node to snippets, which are abbreviations as well. A single snippet
- // may produce multiple nodes
- // 2. Transform every resolved node
- // walk(abbr, snippets, config);
- // walk(abbr, transform, config);
+ for (const node of abbr) {
+ resolveNode(node, snippets, config);
+ }
+
return abbr;
}
+export { default as stringify } from './format';
+
/**
* Converts given raw snippets into internal snippets representation
*/
@@ -40,22 +40,25 @@ export function convertSnippets(snippets: SnippetsMap): CSSSnippet[] {
* keyword aliases from node value
*/
function resolveNode(node: CSSProperty, snippets: CSSSnippet[], config: Config): CSSProperty {
- // TODO implement
- // if (config.context) {
- // // Resolve as value of given CSS property
- // return resolveAsPropertyValue(node, snippets.find(s => s.property === config.context), config);
- // }
-
- const snippet = findBestMatch(node.name!, snippets, config.options['stylesheet.fuzzySearchMinScore']);
+ if (config.context) {
+ // Resolve as value of given CSS property
+ const snippet = snippets.find(s => s.type === CSSSnippetType.Property && s.property === config.context) as CSSSnippetProperty | undefined;
+ resolveAsPropertyValue(node, config, snippet);
+ } else {
+ const snippet = findBestMatch(node.name!, snippets, config.options['stylesheet.fuzzySearchMinScore']);
- if (!snippet) {
- // Edge case: `!important` snippet
- return node.important ? setNodeAsText(node, '!important') : node;
+ if (snippet) {
+ if (snippet.type === CSSSnippetType.Property) {
+ resolveAsProperty(node, snippet, config);
+ } else {
+ resolveAsSnippet(node, snippet);
+ }
+ }
}
- return snippet.type === CSSSnippetType.Property
- ? resolveAsProperty(node, snippet, config)
- : resolveAsSnippet(node, snippet);
+ resolveNumericValue(node, config);
+
+ return node;
}
/**
@@ -65,36 +68,21 @@ function resolveAsProperty(node: CSSProperty, snippet: CSSSnippetProperty, confi
const abbr = node.name!;
node.name = snippet.property;
- // Resolve keyword shortcuts
- const keywords = getKeywords(snippet);
-
if (!node.value.length) {
- // No value defined, try to resolve unmatched part as a keyword alias
- const kw = findBestMatch(getUnmatchedPart(abbr, snippet.key), keywords);
- if (kw) {
- node.value = snippet.value[kw.index]!;
- } else if (snippet.value.length) {
+ // No value defined in abbreviation node, try to resolve unmatched part
+ // as a keyword alias
+ if (!resolveSnippetKeyword(node, getUnmatchedPart(abbr, snippet.key), snippet) && snippet.value.length) {
const defaultValue = snippet.value[0]!;
node.value = defaultValue.some(hasField)
? defaultValue
: defaultValue.map(n => wrapWithField(n));
}
} else {
- // replace keyword aliases in current node value
- for (let i = 0, token; i < node.value.value.length; i++) {
- token = node.value.value[i];
-
- if (token === '!') {
- token = `${!i ? '${1} ' : ''}!important`;
- } else if (isKeyword(token)) {
- token = findBestMatch(token.value, keywords)
- || findBestMatch(token.value, globalKeywords)
- || token;
- } else if (isNumericValue(token)) {
- token = resolveNumericValue(node.name, token, formatOptions);
- }
-
- node.value.value[i] = token;
+ // Replace keyword alias from current abbreviation node with matched keyword
+ const kw = getSingleKeyword(node);
+ if (kw) {
+ resolveSnippetKeyword(node, kw.value, snippet)
+ || resolveGlobalKeyword(node, kw.value, config);
}
}
@@ -112,30 +100,13 @@ function resolveAsSnippet(node: CSSProperty, snippet: CSSSnippetRaw): CSSPropert
* Resolves given parsed abbreviation node as property value of given `snippet`:
* tries to find best matching keyword from CSS snippet
*/
-function resolveAsPropertyValue(node: CSSProperty, snippet: CSSSnippet, config: Config): CSSProperty {
- // Possible resolved result for CSS property:
- // * matched snippet keyword
- // * color (starts with #)
- // Everything else should result the same as input abbreviation
- let keywords = config.options['stylesheet.keywords'].slice();
- if (snippet) {
- keywords = keywords.concat(getKeywords(snippet));
+function resolveAsPropertyValue(node: CSSProperty, config: Config, snippet?: CSSSnippetProperty): CSSProperty {
+ const kw = getSingleKeyword(node);
+ if (kw) {
+ const score = config.options['stylesheet.fuzzySearchMinScore'];
+ snippet && resolveSnippetKeyword(node, kw.value, snippet, score)
+ || resolveGlobalKeyword(node, kw.value, config, score);
}
-
- const values = [node.name].concat(node.value.value)
- .filter(Boolean)
- .map(value => {
- if (typeof value === 'string' || value.type === 'keyword') {
- value = String(value);
- return findBestMatch(value, keywords, null, config.fuzzySearchMinScore) || value;
- }
-
- return value;
- });
-
- node.name = null;
- node.value.value = values;
-
return node;
}
@@ -176,6 +147,9 @@ export function findBestMatch<T extends MatchInput>(abbr: string, items: T[], mi
}
function getScoringPart(item: MatchInput): string {
+ if (typeof item === 'string') {
+ return item;
+ }
return (item as CSSKeywordRef).keyword || (item as CSSSnippet).key;
}
@@ -196,45 +170,66 @@ function getUnmatchedPart(abbr: string, str: string): string {
return '';
}
+function resolveSnippetKeyword(node: CSSProperty, kw: string, snippet: CSSSnippetProperty, minScore?: number): boolean {
+ const keywords = getKeywords(snippet);
+ const ref = findBestMatch(kw, keywords, minScore);
+
+ if (ref) {
+ node.value = snippet.value[ref.index]!;
+ return true;
+ }
+
+ return false;
+}
+
/**
- * Check if given CSS value token is a keyword
- * @param {*} token
- * @return {Boolean}
+ * Tries to resolve node’s value with matched global keyword from given `kw` alias
+ * @returns `true` if value was successfully resolved
*/
-function isKeyword(token) {
- return tokenTypeOf(token, 'keyword');
+function resolveGlobalKeyword(node: CSSProperty, kw: string, config: Config, minScore?: number): boolean {
+ const ref = findBestMatch(kw, config.options['stylesheet.keywords'], minScore);
+ if (ref) {
+ node.value = [literalValue(ref)];
+ return true;
+ }
+
+ return false;
}
/**
- * Check if given CSS value token is a numeric value
- * @param {*} token
- * @return {Boolean}
+ * Resolves numeric values in given abbreviation node
*/
-function isNumericValue(token) {
- return tokenTypeOf(token, 'numeric');
-}
+function resolveNumericValue(node: CSSProperty, config: Config) {
+ const aliases = config.options['stylesheet.unitAliases'];
+ const unitless = config.options['stylesheet.unitless'];
-function tokenTypeOf(token, type) {
- return token && typeof token === 'object' && token.type === type;
+ for (const v of node.value) {
+ for (const t of v.value) {
+ if (t.type === 'NumberValue') {
+ if (t.unit) {
+ t.unit = aliases[t.unit] || t.unit;
+ } else if (t.value !== 0 && !unitless.includes(node.name!)) {
+ // use `px` for integers, `em` for floats
+ // NB: num|0 is a quick alternative to Math.round(0)
+ t.unit = t.value === (t.value | 0)
+ ? config.options['stylesheet.intUnit']
+ : config.options['stylesheet.floatUnit'];
+ }
+ }
+ }
+ }
}
/**
- * Resolves numeric value for given CSS property
- * @param {String} property CSS property name
- * @param {NumericValue} token CSS numeric value token
- * @param {Object} formatOptions Formatting options for units
- * @return {NumericValue}
+ * Returns literal token if it’s a single value of given abbreviation node
*/
-function resolveNumericValue(property, token, formatOptions) {
- if (token.unit) {
- token.unit = formatOptions.unitAliases[token.unit] || token.unit;
- } else if (token.value !== 0 && unitlessProperties.indexOf(property) === -1) {
- // use `px` for integers, `em` for floats
- // NB: num|0 is a quick alternative to Math.round(0)
- token.unit = token.value === (token.value | 0) ? formatOptions.intUnit : formatOptions.floatUnit;
+function getSingleKeyword(node: CSSProperty): Literal | void {
+ if (node.value.length === 1) {
+ const value = node.value[0]!;
+ if (value.value.length === 1 && value.value[0].type === 'Literal') {
+ return value.value[0] as Literal;
+ }
}
-
- return token;
}
/**
| 88 | Working on stylesheet resolving and output | 93 | .ts | ts | mit | emmetio/emmet |
10071784 | <NME> index.ts
<BEF> import abbreviation, { CSSAbbreviation, CSSProperty, CSSValue, Literal, Value, Field, FunctionCall } from '@emmetio/css-abbreviation';
import { Config, SnippetsMap } from '../config';
import createSnippet, { CSSSnippet, nest, getKeywords, CSSSnippetType, CSSSnippetRaw, CSSSnippetProperty, CSSKeywordRef } from './snippets';
import calculateScore from './score';
type MatchInput = CSSSnippet | CSSKeywordRef;
/**
* Parses given Emmet abbreviation into a final abbreviation tree with all
/** Include all possible snippets in match */
Global = '@@global',
/** Include raw snippets only (e.g. no properties) in abbreviation match */
Section = '@@section',
abbr = abbreviation(abbr);
}
// Run abbreviation resolve in two passes:
// 1. Map each node to snippets, which are abbreviations as well. A single snippet
// may produce multiple nodes
// 2. Transform every resolved node
// walk(abbr, snippets, config);
// walk(abbr, transform, config);
return abbr;
}
/**
* Converts given raw snippets into internal snippets representation
*/
if (config.cache) {
config.cache.stylesheetSnippets = snippets;
}
if (typeof abbr === 'string') {
abbr = abbreviation(abbr, { value: isValueScope(config) });
}
const filteredSnippets = getSnippetsForScope(snippets, config);
* keyword aliases from node value
*/
function resolveNode(node: CSSProperty, snippets: CSSSnippet[], config: Config): CSSProperty {
// TODO implement
// if (config.context) {
// // Resolve as value of given CSS property
// return resolveAsPropertyValue(node, snippets.find(s => s.property === config.context), config);
// }
const snippet = findBestMatch(node.name!, snippets, config.options['stylesheet.fuzzySearchMinScore']);
if (!snippet) {
// Edge case: `!important` snippet
return node.important ? setNodeAsText(node, '!important') : node;
}
return snippet.type === CSSSnippetType.Property
? resolveAsProperty(node, snippet, config)
: resolveAsSnippet(node, snippet);
}
/**
function resolveNode(node: CSSProperty, snippets: CSSSnippet[], config: Config): CSSProperty {
if (!resolveGradient(node, config)) {
const score = config.options['stylesheet.fuzzySearchMinScore'];
const abbr = node.name!;
node.name = snippet.property;
// Resolve keyword shortcuts
const keywords = getKeywords(snippet);
if (!node.value.length) {
// No value defined, try to resolve unmatched part as a keyword alias
const kw = findBestMatch(getUnmatchedPart(abbr, snippet.key), keywords);
if (kw) {
node.value = snippet.value[kw.index]!;
} else if (snippet.value.length) {
const defaultValue = snippet.value[0]!;
node.value = defaultValue.some(hasField)
? defaultValue
: defaultValue.map(n => wrapWithField(n));
}
} else {
// replace keyword aliases in current node value
for (let i = 0, token; i < node.value.value.length; i++) {
token = node.value.value[i];
if (token === '!') {
token = `${!i ? '${1} ' : ''}!important`;
} else if (isKeyword(token)) {
token = findBestMatch(token.value, keywords)
|| findBestMatch(token.value, globalKeywords)
|| token;
} else if (isNumericValue(token)) {
token = resolveNumericValue(node.name, token, formatOptions);
}
node.value.value[i] = token;
}
}
// Resolve numeric values for CSS properties only
resolveNumericValue(node, config);
}
return node;
}
/**
* Resolves CSS gradient shortcut from given property, if possible
*/
function resolveGradient(node: CSSProperty, config: Config): boolean {
* Resolves given parsed abbreviation node as property value of given `snippet`:
* tries to find best matching keyword from CSS snippet
*/
function resolveAsPropertyValue(node: CSSProperty, snippet: CSSSnippet, config: Config): CSSProperty {
// Possible resolved result for CSS property:
// * matched snippet keyword
// * color (starts with #)
// Everything else should result the same as input abbreviation
let keywords = config.options['stylesheet.keywords'].slice();
if (snippet) {
keywords = keywords.concat(getKeywords(snippet));
}
const values = [node.name].concat(node.value.value)
.filter(Boolean)
.map(value => {
if (typeof value === 'string' || value.type === 'keyword') {
value = String(value);
return findBestMatch(value, keywords, null, config.fuzzySearchMinScore) || value;
}
return value;
});
node.name = null;
node.value.value = values;
return node;
}
type: 'FunctionCall',
name: 'linear-gradient',
arguments: [cssValue(field(0, ''))]
};
} else {
gradientFn = {
...gradientFn,
name: 'linear-gradient'
};
}
if (!config.context) {
node.name = 'background-image';
}
node.value = [cssValue(gradientFn)];
return true;
}
return false;
}
/**
* Resolves given parsed abbreviation node as CSS property
*/
function resolveAsProperty(node: CSSProperty, snippet: CSSSnippetProperty, config: Config): CSSProperty {
const abbr = node.name!;
// Check for unmatched part of abbreviation
// For example, in `dib` abbreviation the matched part is `d` and `ib` should
// be considered as inline value. If unmatched fragment exists, we should check
// if it matches actual value of snippet. If either explicit value is specified
// or unmatched fragment did not resolve to to a keyword, we should consider
// matched snippet as invalid
const inlineValue = getUnmatchedPart(abbr, snippet.key);
}
function getScoringPart(item: MatchInput): string {
return (item as CSSKeywordRef).keyword || (item as CSSSnippet).key;
}
node.value.push(cssValue(kw));
}
node.name = snippet.property;
if (node.value.length) {
// Replace keyword alias from current abbreviation node with matched keyword
resolveValueKeywords(node, config, snippet);
} else if (snippet.value.length) {
const defaultValue = snippet.value[0]!;
// https://github.com/emmetio/emmet/issues/558
// We should auto-select inserted value only if there’s multiple value
// choice
return '';
}
/**
* Check if given CSS value token is a keyword
* @param {*} token
* @return {Boolean}
*/
function isKeyword(token) {
return tokenTypeOf(token, 'keyword');
}
/**
* Check if given CSS value token is a numeric value
* @param {*} token
* @return {Boolean}
*/
function isNumericValue(token) {
return tokenTypeOf(token, 'numeric');
}
function tokenTypeOf(token, type) {
return token && typeof token === 'object' && token.type === type;
}
/**
* Resolves numeric value for given CSS property
* @param {String} property CSS property name
* @param {NumericValue} token CSS numeric value token
* @param {Object} formatOptions Formatting options for units
* @return {NumericValue}
*/
function resolveNumericValue(property, token, formatOptions) {
if (token.unit) {
token.unit = formatOptions.unitAliases[token.unit] || token.unit;
} else if (token.value !== 0 && unitlessProperties.indexOf(property) === -1) {
// use `px` for integers, `em` for floats
// NB: num|0 is a quick alternative to Math.round(0)
token.unit = token.value === (token.value | 0) ? formatOptions.intUnit : formatOptions.floatUnit;
}
return token;
}
/**
return node;
}
/**
* Finds best matching item from `items` array
* @param abbr Abbreviation to match
* @param items List of items for match
* @param minScore The minimum score the best matched item should have to be a valid match.
*/
export function findBestMatch<T extends MatchInput>(abbr: string, items: T[], minScore = 0, partialMatch = false): T | null {
let matchedItem: T | null = null;
let maxScore = 0;
for (const item of items) {
const score = calculateScore(abbr, getScoringPart(item), partialMatch);
if (score === 1) {
// direct hit, no need to look further
return item;
}
if (score && score >= maxScore) {
maxScore = score;
matchedItem = item;
}
}
return maxScore >= minScore ? matchedItem : null;
}
function getScoringPart(item: MatchInput): string {
return typeof item === 'string' ? item : item.key;
}
/**
* Returns a part of `abbr` that wasn’t directly matched against `str`.
* For example, if abbreviation `poas` is matched against `position`,
* the unmatched part will be `as` since `a` wasn’t found in string stream
*/
function getUnmatchedPart(abbr: string, str: string): string {
for (let i = 0, lastPos = 0; i < abbr.length; i++) {
lastPos = str.indexOf(abbr[i], lastPos);
if (lastPos === -1) {
return abbr.slice(i);
}
lastPos++;
}
return '';
}
/**
* Resolves given keyword shorthand into matched snippet keyword or global keyword,
* if possible
*/
function resolveKeyword(kw: string, config: Config, snippet?: CSSSnippetProperty, minScore?: number): Literal | FunctionCall | null {
let ref: string | null;
if (snippet) {
if (ref = findBestMatch(kw, Object.keys(snippet.keywords), minScore)) {
return snippet.keywords[ref];
}
for (const dep of snippet.dependencies) {
if (ref = findBestMatch(kw, Object.keys(dep.keywords), minScore)) {
return dep.keywords[ref];
}
}
}
if (ref = findBestMatch(kw, config.options['stylesheet.keywords'], minScore)) {
return literal(ref);
}
return null;
}
/**
* Resolves numeric values in given abbreviation node
*/
function resolveNumericValue(node: CSSProperty, config: Config) {
const aliases = config.options['stylesheet.unitAliases'];
const unitless = config.options['stylesheet.unitless'];
for (const v of node.value) {
for (const t of v.value) {
if (t.type === 'NumberValue') {
if (t.unit) {
t.unit = aliases[t.unit] || t.unit;
} else if (t.value !== 0 && !unitless.includes(node.name!)) {
t.unit = t.rawValue.includes('.')
? config.options['stylesheet.floatUnit']
: config.options['stylesheet.intUnit'];
}
}
}
}
}
/**
* Constructs CSS value token
*/
function cssValue(...args: Value[]): CSSValue {
return {
type: 'CSSValue',
value: args
};
}
/**
* Constructs literal token
*/
function literal(value: string): Literal {
return { type: 'Literal', value };
}
/**
* Constructs field token
*/
function field(index: number, name: string): Field {
return { type: 'Field', index, name };
}
/**
* Check if given value contains fields
*/
function hasField(value: CSSValue): boolean {
for (const v of value.value) {
if (v.type === 'Field' || (v.type === 'FunctionCall' && v.arguments.some(hasField))) {
return true;
}
}
return false;
}
interface WrapState {
index: number;
}
/**
* Wraps tokens of given abbreviation with fields
*/
function wrapWithField(node: CSSValue, config: Config, state: WrapState = { index: 1 }): CSSValue {
let value: Value[] = [];
for (const v of node.value) {
switch (v.type) {
case 'ColorValue':
value.push(field(state.index++, color(v, config.options['stylesheet.shortHex'])));
break;
case 'Literal':
value.push(field(state.index++, v.value));
break;
case 'NumberValue':
value.push(field(state.index++, `${v.value}${v.unit}`));
break;
case 'StringValue':
const q = v.quote === 'single' ? '\'' : '"';
value.push(field(state.index++, q + v.value + q));
break;
case 'FunctionCall':
value.push(field(state.index++, v.name), literal('('));
for (let i = 0, il = v.arguments.length; i < il; i++) {
value = value.concat(wrapWithField(v.arguments[i], config, state).value);
if (i !== il - 1) {
value.push(literal(', '));
}
}
value.push(literal(')'));
break;
default:
value.push(v);
}
}
return {...node, value };
}
/**
* Check if abbreviation should be expanded in CSS value context
*/
function isValueScope(config: Config): boolean {
if (config.context) {
return config.context.name === CSSAbbreviationScope.Value || !config.context.name.startsWith('@@');
}
return false;
}
/**
* Returns snippets for given scope
*/
function getSnippetsForScope(snippets: CSSSnippet[], config: Config): CSSSnippet[] {
if (config.context) {
if (config.context.name === CSSAbbreviationScope.Section) {
return snippets.filter(s => s.type === CSSSnippetType.Raw);
}
if (config.context.name === CSSAbbreviationScope.Property) {
return snippets.filter(s => s.type === CSSSnippetType.Property);
}
}
return snippets;
}
<MSG> Working on stylesheet resolving and output
<DFF> @@ -3,7 +3,7 @@ import { Config, SnippetsMap } from '../config';
import createSnippet, { CSSSnippet, nest, getKeywords, CSSSnippetType, CSSSnippetRaw, CSSSnippetProperty, CSSKeywordRef } from './snippets';
import calculateScore from './score';
-type MatchInput = CSSSnippet | CSSKeywordRef;
+type MatchInput = CSSSnippet | CSSKeywordRef | string;
/**
* Parses given Emmet abbreviation into a final abbreviation tree with all
@@ -14,15 +14,15 @@ export default function parse(abbr: string | CSSAbbreviation, config: Config, sn
abbr = abbreviation(abbr);
}
- // Run abbreviation resolve in two passes:
- // 1. Map each node to snippets, which are abbreviations as well. A single snippet
- // may produce multiple nodes
- // 2. Transform every resolved node
- // walk(abbr, snippets, config);
- // walk(abbr, transform, config);
+ for (const node of abbr) {
+ resolveNode(node, snippets, config);
+ }
+
return abbr;
}
+export { default as stringify } from './format';
+
/**
* Converts given raw snippets into internal snippets representation
*/
@@ -40,22 +40,25 @@ export function convertSnippets(snippets: SnippetsMap): CSSSnippet[] {
* keyword aliases from node value
*/
function resolveNode(node: CSSProperty, snippets: CSSSnippet[], config: Config): CSSProperty {
- // TODO implement
- // if (config.context) {
- // // Resolve as value of given CSS property
- // return resolveAsPropertyValue(node, snippets.find(s => s.property === config.context), config);
- // }
-
- const snippet = findBestMatch(node.name!, snippets, config.options['stylesheet.fuzzySearchMinScore']);
+ if (config.context) {
+ // Resolve as value of given CSS property
+ const snippet = snippets.find(s => s.type === CSSSnippetType.Property && s.property === config.context) as CSSSnippetProperty | undefined;
+ resolveAsPropertyValue(node, config, snippet);
+ } else {
+ const snippet = findBestMatch(node.name!, snippets, config.options['stylesheet.fuzzySearchMinScore']);
- if (!snippet) {
- // Edge case: `!important` snippet
- return node.important ? setNodeAsText(node, '!important') : node;
+ if (snippet) {
+ if (snippet.type === CSSSnippetType.Property) {
+ resolveAsProperty(node, snippet, config);
+ } else {
+ resolveAsSnippet(node, snippet);
+ }
+ }
}
- return snippet.type === CSSSnippetType.Property
- ? resolveAsProperty(node, snippet, config)
- : resolveAsSnippet(node, snippet);
+ resolveNumericValue(node, config);
+
+ return node;
}
/**
@@ -65,36 +68,21 @@ function resolveAsProperty(node: CSSProperty, snippet: CSSSnippetProperty, confi
const abbr = node.name!;
node.name = snippet.property;
- // Resolve keyword shortcuts
- const keywords = getKeywords(snippet);
-
if (!node.value.length) {
- // No value defined, try to resolve unmatched part as a keyword alias
- const kw = findBestMatch(getUnmatchedPart(abbr, snippet.key), keywords);
- if (kw) {
- node.value = snippet.value[kw.index]!;
- } else if (snippet.value.length) {
+ // No value defined in abbreviation node, try to resolve unmatched part
+ // as a keyword alias
+ if (!resolveSnippetKeyword(node, getUnmatchedPart(abbr, snippet.key), snippet) && snippet.value.length) {
const defaultValue = snippet.value[0]!;
node.value = defaultValue.some(hasField)
? defaultValue
: defaultValue.map(n => wrapWithField(n));
}
} else {
- // replace keyword aliases in current node value
- for (let i = 0, token; i < node.value.value.length; i++) {
- token = node.value.value[i];
-
- if (token === '!') {
- token = `${!i ? '${1} ' : ''}!important`;
- } else if (isKeyword(token)) {
- token = findBestMatch(token.value, keywords)
- || findBestMatch(token.value, globalKeywords)
- || token;
- } else if (isNumericValue(token)) {
- token = resolveNumericValue(node.name, token, formatOptions);
- }
-
- node.value.value[i] = token;
+ // Replace keyword alias from current abbreviation node with matched keyword
+ const kw = getSingleKeyword(node);
+ if (kw) {
+ resolveSnippetKeyword(node, kw.value, snippet)
+ || resolveGlobalKeyword(node, kw.value, config);
}
}
@@ -112,30 +100,13 @@ function resolveAsSnippet(node: CSSProperty, snippet: CSSSnippetRaw): CSSPropert
* Resolves given parsed abbreviation node as property value of given `snippet`:
* tries to find best matching keyword from CSS snippet
*/
-function resolveAsPropertyValue(node: CSSProperty, snippet: CSSSnippet, config: Config): CSSProperty {
- // Possible resolved result for CSS property:
- // * matched snippet keyword
- // * color (starts with #)
- // Everything else should result the same as input abbreviation
- let keywords = config.options['stylesheet.keywords'].slice();
- if (snippet) {
- keywords = keywords.concat(getKeywords(snippet));
+function resolveAsPropertyValue(node: CSSProperty, config: Config, snippet?: CSSSnippetProperty): CSSProperty {
+ const kw = getSingleKeyword(node);
+ if (kw) {
+ const score = config.options['stylesheet.fuzzySearchMinScore'];
+ snippet && resolveSnippetKeyword(node, kw.value, snippet, score)
+ || resolveGlobalKeyword(node, kw.value, config, score);
}
-
- const values = [node.name].concat(node.value.value)
- .filter(Boolean)
- .map(value => {
- if (typeof value === 'string' || value.type === 'keyword') {
- value = String(value);
- return findBestMatch(value, keywords, null, config.fuzzySearchMinScore) || value;
- }
-
- return value;
- });
-
- node.name = null;
- node.value.value = values;
-
return node;
}
@@ -176,6 +147,9 @@ export function findBestMatch<T extends MatchInput>(abbr: string, items: T[], mi
}
function getScoringPart(item: MatchInput): string {
+ if (typeof item === 'string') {
+ return item;
+ }
return (item as CSSKeywordRef).keyword || (item as CSSSnippet).key;
}
@@ -196,45 +170,66 @@ function getUnmatchedPart(abbr: string, str: string): string {
return '';
}
+function resolveSnippetKeyword(node: CSSProperty, kw: string, snippet: CSSSnippetProperty, minScore?: number): boolean {
+ const keywords = getKeywords(snippet);
+ const ref = findBestMatch(kw, keywords, minScore);
+
+ if (ref) {
+ node.value = snippet.value[ref.index]!;
+ return true;
+ }
+
+ return false;
+}
+
/**
- * Check if given CSS value token is a keyword
- * @param {*} token
- * @return {Boolean}
+ * Tries to resolve node’s value with matched global keyword from given `kw` alias
+ * @returns `true` if value was successfully resolved
*/
-function isKeyword(token) {
- return tokenTypeOf(token, 'keyword');
+function resolveGlobalKeyword(node: CSSProperty, kw: string, config: Config, minScore?: number): boolean {
+ const ref = findBestMatch(kw, config.options['stylesheet.keywords'], minScore);
+ if (ref) {
+ node.value = [literalValue(ref)];
+ return true;
+ }
+
+ return false;
}
/**
- * Check if given CSS value token is a numeric value
- * @param {*} token
- * @return {Boolean}
+ * Resolves numeric values in given abbreviation node
*/
-function isNumericValue(token) {
- return tokenTypeOf(token, 'numeric');
-}
+function resolveNumericValue(node: CSSProperty, config: Config) {
+ const aliases = config.options['stylesheet.unitAliases'];
+ const unitless = config.options['stylesheet.unitless'];
-function tokenTypeOf(token, type) {
- return token && typeof token === 'object' && token.type === type;
+ for (const v of node.value) {
+ for (const t of v.value) {
+ if (t.type === 'NumberValue') {
+ if (t.unit) {
+ t.unit = aliases[t.unit] || t.unit;
+ } else if (t.value !== 0 && !unitless.includes(node.name!)) {
+ // use `px` for integers, `em` for floats
+ // NB: num|0 is a quick alternative to Math.round(0)
+ t.unit = t.value === (t.value | 0)
+ ? config.options['stylesheet.intUnit']
+ : config.options['stylesheet.floatUnit'];
+ }
+ }
+ }
+ }
}
/**
- * Resolves numeric value for given CSS property
- * @param {String} property CSS property name
- * @param {NumericValue} token CSS numeric value token
- * @param {Object} formatOptions Formatting options for units
- * @return {NumericValue}
+ * Returns literal token if it’s a single value of given abbreviation node
*/
-function resolveNumericValue(property, token, formatOptions) {
- if (token.unit) {
- token.unit = formatOptions.unitAliases[token.unit] || token.unit;
- } else if (token.value !== 0 && unitlessProperties.indexOf(property) === -1) {
- // use `px` for integers, `em` for floats
- // NB: num|0 is a quick alternative to Math.round(0)
- token.unit = token.value === (token.value | 0) ? formatOptions.intUnit : formatOptions.floatUnit;
+function getSingleKeyword(node: CSSProperty): Literal | void {
+ if (node.value.length === 1) {
+ const value = node.value[0]!;
+ if (value.value.length === 1 && value.value[0].type === 'Literal') {
+ return value.value[0] as Literal;
+ }
}
-
- return token;
}
/**
| 88 | Working on stylesheet resolving and output | 93 | .ts | ts | mit | emmetio/emmet |
10071785 | <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",
s.require_paths = ["lib"]
s.add_dependency(%q<redis>, ["~> 2.1"])
s.add_dependency(%q<redis-namespace>, ["~> 0.10.0"])
s.add_dependency(%q<sinatra>, ["~> 1.2.6"])
# Development Dependencies
s.required_ruby_version = ">= 2.5.0"
s.required_rubygems_version = ">= 2.0.0"
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> redis-namespace version bumped
<DFF> @@ -19,7 +19,7 @@ Gem::Specification.new do |s|
s.require_paths = ["lib"]
s.add_dependency(%q<redis>, ["~> 2.1"])
- s.add_dependency(%q<redis-namespace>, ["~> 0.10.0"])
+ s.add_dependency(%q<redis-namespace>, ["~> 1.0.3"])
s.add_dependency(%q<sinatra>, ["~> 1.2.6"])
# Development Dependencies
| 1 | redis-namespace version bumped | 1 | .gemspec | gemspec | mit | splitrb/split |
10071786 | <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",
s.require_paths = ["lib"]
s.add_dependency(%q<redis>, ["~> 2.1"])
s.add_dependency(%q<redis-namespace>, ["~> 0.10.0"])
s.add_dependency(%q<sinatra>, ["~> 1.2.6"])
# Development Dependencies
s.required_ruby_version = ">= 2.5.0"
s.required_rubygems_version = ">= 2.0.0"
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> redis-namespace version bumped
<DFF> @@ -19,7 +19,7 @@ Gem::Specification.new do |s|
s.require_paths = ["lib"]
s.add_dependency(%q<redis>, ["~> 2.1"])
- s.add_dependency(%q<redis-namespace>, ["~> 0.10.0"])
+ s.add_dependency(%q<redis-namespace>, ["~> 1.0.3"])
s.add_dependency(%q<sinatra>, ["~> 1.2.6"])
# Development Dependencies
| 1 | redis-namespace version bumped | 1 | .gemspec | gemspec | mit | splitrb/split |
10071787 | <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",
s.require_paths = ["lib"]
s.add_dependency(%q<redis>, ["~> 2.1"])
s.add_dependency(%q<redis-namespace>, ["~> 0.10.0"])
s.add_dependency(%q<sinatra>, ["~> 1.2.6"])
# Development Dependencies
s.required_ruby_version = ">= 2.5.0"
s.required_rubygems_version = ">= 2.0.0"
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> redis-namespace version bumped
<DFF> @@ -19,7 +19,7 @@ Gem::Specification.new do |s|
s.require_paths = ["lib"]
s.add_dependency(%q<redis>, ["~> 2.1"])
- s.add_dependency(%q<redis-namespace>, ["~> 0.10.0"])
+ s.add_dependency(%q<redis-namespace>, ["~> 1.0.3"])
s.add_dependency(%q<sinatra>, ["~> 1.2.6"])
# Development Dependencies
| 1 | redis-namespace version bumped | 1 | .gemspec | gemspec | mit | splitrb/split |
10071788 | <NME> split.rb
<BEF> %w[algorithms extensions metric trial experiment alternative helper version configuration persistence exceptions].each do |f|
require "split/#{f}"
end
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
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 Split::Railtie < Rails::Railtie
config.before_initialize { Split.configure { } }
end
else
Split.configure { }
end
<MSG> made required files list more readable
<DFF> @@ -1,4 +1,14 @@
-%w[algorithms extensions metric trial experiment alternative helper version configuration persistence exceptions].each do |f|
+%w[algorithms
+ alternative
+ configuration
+ exceptions
+ experiment
+ extensions
+ helper
+ metric
+ persistence
+ trial
+ version].each do |f|
require "split/#{f}"
end
| 11 | made required files list more readable | 1 | .rb | rb | mit | splitrb/split |
10071789 | <NME> split.rb
<BEF> %w[algorithms extensions metric trial experiment alternative helper version configuration persistence exceptions].each do |f|
require "split/#{f}"
end
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
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 Split::Railtie < Rails::Railtie
config.before_initialize { Split.configure { } }
end
else
Split.configure { }
end
<MSG> made required files list more readable
<DFF> @@ -1,4 +1,14 @@
-%w[algorithms extensions metric trial experiment alternative helper version configuration persistence exceptions].each do |f|
+%w[algorithms
+ alternative
+ configuration
+ exceptions
+ experiment
+ extensions
+ helper
+ metric
+ persistence
+ trial
+ version].each do |f|
require "split/#{f}"
end
| 11 | made required files list more readable | 1 | .rb | rb | mit | splitrb/split |
10071790 | <NME> split.rb
<BEF> %w[algorithms extensions metric trial experiment alternative helper version configuration persistence exceptions].each do |f|
require "split/#{f}"
end
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
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 Split::Railtie < Rails::Railtie
config.before_initialize { Split.configure { } }
end
else
Split.configure { }
end
<MSG> made required files list more readable
<DFF> @@ -1,4 +1,14 @@
-%w[algorithms extensions metric trial experiment alternative helper version configuration persistence exceptions].each do |f|
+%w[algorithms
+ alternative
+ configuration
+ exceptions
+ experiment
+ extensions
+ helper
+ metric
+ persistence
+ trial
+ version].each do |f|
require "split/#{f}"
end
| 11 | made required files list more readable | 1 | .rb | rb | mit | splitrb/split |
10071791 | <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
end
#
it "allows name param without probability" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt" },
"second_opt",
end
end
it "should return an existing alternative" do
alternative = Split::Alternative.create('Basket', 'basket_text')
Split::Alternative.find('Basket', 'basket_text').name.should eql('Basket')
end
describe 'z score' do
it 'should be zero when the control has no conversions' do
experiment = Split::Experiment.find_or_create('link_color', 'blue', 'red')
[
["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> Alternative.create doesn't make much sense now
<DFF> @@ -94,11 +94,6 @@ describe Split::Alternative do
end
end
- it "should return an existing alternative" do
- alternative = Split::Alternative.create('Basket', 'basket_text')
- Split::Alternative.find('Basket', 'basket_text').name.should eql('Basket')
- end
-
describe 'z score' do
it 'should be zero when the control has no conversions' do
experiment = Split::Experiment.find_or_create('link_color', 'blue', 'red')
| 0 | Alternative.create doesn't make much sense now | 5 | .rb | rb | mit | splitrb/split |
10071792 | <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
end
#
it "allows name param without probability" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt" },
"second_opt",
end
end
it "should return an existing alternative" do
alternative = Split::Alternative.create('Basket', 'basket_text')
Split::Alternative.find('Basket', 'basket_text').name.should eql('Basket')
end
describe 'z score' do
it 'should be zero when the control has no conversions' do
experiment = Split::Experiment.find_or_create('link_color', 'blue', 'red')
[
["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> Alternative.create doesn't make much sense now
<DFF> @@ -94,11 +94,6 @@ describe Split::Alternative do
end
end
- it "should return an existing alternative" do
- alternative = Split::Alternative.create('Basket', 'basket_text')
- Split::Alternative.find('Basket', 'basket_text').name.should eql('Basket')
- end
-
describe 'z score' do
it 'should be zero when the control has no conversions' do
experiment = Split::Experiment.find_or_create('link_color', 'blue', 'red')
| 0 | Alternative.create doesn't make much sense now | 5 | .rb | rb | mit | splitrb/split |
10071793 | <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
end
#
it "allows name param without probability" do
Split.configuration.experiments = {
my_experiment: {
alternatives: [
{ name: "control_opt" },
"second_opt",
end
end
it "should return an existing alternative" do
alternative = Split::Alternative.create('Basket', 'basket_text')
Split::Alternative.find('Basket', 'basket_text').name.should eql('Basket')
end
describe 'z score' do
it 'should be zero when the control has no conversions' do
experiment = Split::Experiment.find_or_create('link_color', 'blue', 'red')
[
["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> Alternative.create doesn't make much sense now
<DFF> @@ -94,11 +94,6 @@ describe Split::Alternative do
end
end
- it "should return an existing alternative" do
- alternative = Split::Alternative.create('Basket', 'basket_text')
- Split::Alternative.find('Basket', 'basket_text').name.should eql('Basket')
- end
-
describe 'z score' do
it 'should be zero when the control has no conversions' do
experiment = Split::Experiment.find_or_create('link_color', 'blue', 'red')
| 0 | Alternative.create doesn't make much sense now | 5 | .rb | rb | mit | splitrb/split |
10071794 | <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)
def ab_record_extra_info(metric_descriptor, key, value = 1)
return if exclude_visitor? || Split.configuration.disabled?
metric_descriptor, goals = normalize_metric(metric_descriptor)
experiments = Metric.possible_experiments(metric_descriptor)
if experiments.any?
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
def split_generically_disabled?
defined?(params) && params["SPLIT_DISABLE"]
end
def ab_user
@ab_user ||= User.new(self)
end
def exclude_visitor?
defined?(request) && (instance_exec(request, &Split.configuration.ignore_filter) || is_ignored_ip_address? || is_robot? || is_preview?)
end
def is_robot?
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> Merge pull request #592 from splitrb/fix-unused-variable-warnings
Fix unused variable warnings
<DFF> @@ -80,7 +80,7 @@ module Split
def ab_record_extra_info(metric_descriptor, key, value = 1)
return if exclude_visitor? || Split.configuration.disabled?
- metric_descriptor, goals = normalize_metric(metric_descriptor)
+ metric_descriptor, _ = normalize_metric(metric_descriptor)
experiments = Metric.possible_experiments(metric_descriptor)
if experiments.any?
| 1 | Merge pull request #592 from splitrb/fix-unused-variable-warnings | 1 | .rb | rb | mit | splitrb/split |
10071795 | <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)
def ab_record_extra_info(metric_descriptor, key, value = 1)
return if exclude_visitor? || Split.configuration.disabled?
metric_descriptor, goals = normalize_metric(metric_descriptor)
experiments = Metric.possible_experiments(metric_descriptor)
if experiments.any?
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
def split_generically_disabled?
defined?(params) && params["SPLIT_DISABLE"]
end
def ab_user
@ab_user ||= User.new(self)
end
def exclude_visitor?
defined?(request) && (instance_exec(request, &Split.configuration.ignore_filter) || is_ignored_ip_address? || is_robot? || is_preview?)
end
def is_robot?
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> Merge pull request #592 from splitrb/fix-unused-variable-warnings
Fix unused variable warnings
<DFF> @@ -80,7 +80,7 @@ module Split
def ab_record_extra_info(metric_descriptor, key, value = 1)
return if exclude_visitor? || Split.configuration.disabled?
- metric_descriptor, goals = normalize_metric(metric_descriptor)
+ metric_descriptor, _ = normalize_metric(metric_descriptor)
experiments = Metric.possible_experiments(metric_descriptor)
if experiments.any?
| 1 | Merge pull request #592 from splitrb/fix-unused-variable-warnings | 1 | .rb | rb | mit | splitrb/split |
10071796 | <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)
def ab_record_extra_info(metric_descriptor, key, value = 1)
return if exclude_visitor? || Split.configuration.disabled?
metric_descriptor, goals = normalize_metric(metric_descriptor)
experiments = Metric.possible_experiments(metric_descriptor)
if experiments.any?
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
def split_generically_disabled?
defined?(params) && params["SPLIT_DISABLE"]
end
def ab_user
@ab_user ||= User.new(self)
end
def exclude_visitor?
defined?(request) && (instance_exec(request, &Split.configuration.ignore_filter) || is_ignored_ip_address? || is_robot? || is_preview?)
end
def is_robot?
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> Merge pull request #592 from splitrb/fix-unused-variable-warnings
Fix unused variable warnings
<DFF> @@ -80,7 +80,7 @@ module Split
def ab_record_extra_info(metric_descriptor, key, value = 1)
return if exclude_visitor? || Split.configuration.disabled?
- metric_descriptor, goals = normalize_metric(metric_descriptor)
+ metric_descriptor, _ = normalize_metric(metric_descriptor)
experiments = Metric.possible_experiments(metric_descriptor)
if experiments.any?
| 1 | Merge pull request #592 from splitrb/fix-unused-variable-warnings | 1 | .rb | rb | mit | splitrb/split |
10071797 | <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",
"bug_tracker_uri" => "https://github.com/splitrb/split/issues",
"wiki_uri" => "https://github.com/splitrb/split/wiki",
"mailing_list_uri" => "https://groups.google.com/d/forum/split-ruby"
}
s.required_ruby_version = ">= 2.5.0"
s.required_rubygems_version = ">= 2.0.0"
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 "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> Merge pull request #635 from splitrb/sinatra-has-left-the-building
Remove Sinatra Dependency for Split Dashboard
<DFF> @@ -31,7 +31,6 @@ Gem::Specification.new do |s|
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'
| 0 | Merge pull request #635 from splitrb/sinatra-has-left-the-building | 1 | .gemspec | gemspec | mit | splitrb/split |
10071798 | <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",
"bug_tracker_uri" => "https://github.com/splitrb/split/issues",
"wiki_uri" => "https://github.com/splitrb/split/wiki",
"mailing_list_uri" => "https://groups.google.com/d/forum/split-ruby"
}
s.required_ruby_version = ">= 2.5.0"
s.required_rubygems_version = ">= 2.0.0"
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 "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> Merge pull request #635 from splitrb/sinatra-has-left-the-building
Remove Sinatra Dependency for Split Dashboard
<DFF> @@ -31,7 +31,6 @@ Gem::Specification.new do |s|
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'
| 0 | Merge pull request #635 from splitrb/sinatra-has-left-the-building | 1 | .gemspec | gemspec | mit | splitrb/split |
10071799 | <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",
"bug_tracker_uri" => "https://github.com/splitrb/split/issues",
"wiki_uri" => "https://github.com/splitrb/split/wiki",
"mailing_list_uri" => "https://groups.google.com/d/forum/split-ruby"
}
s.required_ruby_version = ">= 2.5.0"
s.required_rubygems_version = ">= 2.0.0"
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 "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> Merge pull request #635 from splitrb/sinatra-has-left-the-building
Remove Sinatra Dependency for Split Dashboard
<DFF> @@ -31,7 +31,6 @@ Gem::Specification.new do |s|
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'
| 0 | Merge pull request #635 from splitrb/sinatra-has-left-the-building | 1 | .gemspec | gemspec | mit | splitrb/split |
10071800 | <NME> Rakefile
<BEF> require 'bundler/gem_tasks'
require 'rspec/core/rake_task'
require "rspec/core/rake_task"
RSpec::Core::RakeTask.new("spec")
task default: :spec
<MSG> Added rake shebang
<DFF> @@ -1,3 +1,4 @@
+#!/usr/bin/env rake
require 'bundler/gem_tasks'
require 'rspec/core/rake_task'
| 1 | Added rake shebang | 0 | Rakefile | mit | splitrb/split |
|
10071801 | <NME> Rakefile
<BEF> require 'bundler/gem_tasks'
require 'rspec/core/rake_task'
require "rspec/core/rake_task"
RSpec::Core::RakeTask.new("spec")
task default: :spec
<MSG> Added rake shebang
<DFF> @@ -1,3 +1,4 @@
+#!/usr/bin/env rake
require 'bundler/gem_tasks'
require 'rspec/core/rake_task'
| 1 | Added rake shebang | 0 | Rakefile | mit | splitrb/split |
|
10071802 | <NME> Rakefile
<BEF> require 'bundler/gem_tasks'
require 'rspec/core/rake_task'
require "rspec/core/rake_task"
RSpec::Core::RakeTask.new("spec")
task default: :spec
<MSG> Added rake shebang
<DFF> @@ -1,3 +1,4 @@
+#!/usr/bin/env rake
require 'bundler/gem_tasks'
require 'rspec/core/rake_task'
| 1 | Added rake shebang | 0 | Rakefile | mit | splitrb/split |
|
10071803 | <NME> TODO
<BEF> PyPI feature replication
========================
* Make it possible to register users via distutils.
There should be a setting to turn this feature on/off for private PyPIs.
[taken-by: sverrej]
* Maybe add a permission "can upload new release", so more than one
user can change the same project.
* Should a project have co-owners?
* Documentation upload
* Ratings
* Random Monty Python quotes :-)
* Comments :-)
Post-PyPI
=========
* PEP-381: Mirroring infrastructure for PyPI
[taken-by: jezdez]
* API to submit test reports for smoke test bots. Like CPAN Testers.
Platform/version/matrix etc.
* Different listings: Author listings, classifier listings, etc.
* Search metadata
* Automatic generation of Sphinx for modules (so you can view them directly
on pypi, like CPAN), Module listing etc.
* Listing of special files: README, LICENSE, Changefile/Changes, TODO,
MANIFEST.
* Dependency graphs.
* Package file browser (like CPAN)
Documentation
=============
* Write a tutorial on how to set up the server, registering projects, and
how to upload releases.
<MSG> more TODO tasks
<DFF> @@ -7,3 +7,7 @@
* Maybe add a permission "can upload new release", so more than one
user can change the same project.
* Should a project have co-owners?
+ - One possible solution:
+ http://github.com/initcrash/django-object-permissions/tree
+* Script to populate classifiers from
+ http://pypi.python.org/pypi?%3Aaction=list_classifiers
| 4 | more TODO tasks | 0 | TODO | bsd-3-clause | ask/chishop |
|
10071804 | <NME> engine.rb
<BEF> ADDFILE
<MSG> extracting Rails specifics into engine subclass
<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 | extracting Rails specifics into engine subclass | 0 | .rb | rb | mit | splitrb/split |
10071805 | <NME> engine.rb
<BEF> ADDFILE
<MSG> extracting Rails specifics into engine subclass
<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 | extracting Rails specifics into engine subclass | 0 | .rb | rb | mit | splitrb/split |
10071806 | <NME> engine.rb
<BEF> ADDFILE
<MSG> extracting Rails specifics into engine subclass
<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 | extracting Rails specifics into engine subclass | 0 | .rb | rb | mit | splitrb/split |
10071807 | <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
expect(ab_test("link_color", "blue", "red")).to eq ab_test("link_color", "blue", "red")
end
it "should always return the winner if one is present" do
experiment.winner = "orange"
expect(ab_test("link_color", "blue", "red")).to eq("orange")
end
it "should allow the alternative to be forced by passing it in the params" do
# ?ab_test[link_color]=blue
@params = { "ab_test" => { "link_color" => "blue" } }
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")
@params = { "ab_test" => { "link_color" => "red" } }
alternative = ab_test("link_color", "blue", "red")
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
describe 'ab_finished' 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 experiment that the user is not participating in' do
ab_test('button_size', 'small', 'big')
# 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(lambda {
ab_finished('button_size')
}).not_to change { Split::Alternative.new('small', 'button_size').completed_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'
a = ab_test('button_size', 'small', 'big')
expect(a).to eq('small')
expect(lambda {
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
it "should do nothing where the experiment was not started by this user" do
ab_user = nil
expect(lambda { ab_finished('some_experiment_not_started_by_the_user') }).not_to raise_exception
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
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> Check if the experiment about to finish is active for the user
<DFF> @@ -296,98 +296,126 @@ describe Split::Helper do
end
describe 'ab_finished' 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
+ 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 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 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 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 experiment that the user is not participating in' do
- ab_test('button_size', 'small', 'big')
+ 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(lambda {
+ ab_finished('button_size')
+ }).not_to change { Split::Alternative.new(a, 'button_size').completed_count }
+ end
- # 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(lambda {
- ab_finished('button_size')
- }).not_to change { Split::Alternative.new('small', '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 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(lambda {
- ab_finished('button_size')
- }).not_to change { Split::Alternative.new(a, 'button_size').completed_count }
- 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 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 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 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 versioned" do
+ @experiment.increment_version
+ @alternative_name = ab_test(@experiment_name, *@alternatives)
- 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
+ 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)
+ 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
- expect(ab_user[@experiment.key]).to eq(@alternative_name)
- ab_finished(@experiment_name)
- expect(ab_user.keys).to be_empty
+ 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
- it "should do nothing where the experiment was not started by this user" do
- ab_user = nil
- expect(lambda { ab_finished('some_experiment_not_started_by_the_user') }).not_to raise_exception
+ 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(lambda {
+ ab_finished('button_size')
+ }).not_to change { Split::Alternative.new('small', 'button_size').completed_count }
+ end
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)
+ 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 call the method without alternative" do
- ab_user[@experiment.key] = nil
- expect(self).not_to receive(:some_method)
- ab_finished(@experiment_name)
+ 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
| 103 | Check if the experiment about to finish is active for the user | 75 | .rb | rb | mit | splitrb/split |
10071808 | <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
expect(ab_test("link_color", "blue", "red")).to eq ab_test("link_color", "blue", "red")
end
it "should always return the winner if one is present" do
experiment.winner = "orange"
expect(ab_test("link_color", "blue", "red")).to eq("orange")
end
it "should allow the alternative to be forced by passing it in the params" do
# ?ab_test[link_color]=blue
@params = { "ab_test" => { "link_color" => "blue" } }
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")
@params = { "ab_test" => { "link_color" => "red" } }
alternative = ab_test("link_color", "blue", "red")
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
describe 'ab_finished' 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 experiment that the user is not participating in' do
ab_test('button_size', 'small', 'big')
# 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(lambda {
ab_finished('button_size')
}).not_to change { Split::Alternative.new('small', 'button_size').completed_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'
a = ab_test('button_size', 'small', 'big')
expect(a).to eq('small')
expect(lambda {
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
it "should do nothing where the experiment was not started by this user" do
ab_user = nil
expect(lambda { ab_finished('some_experiment_not_started_by_the_user') }).not_to raise_exception
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
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> Check if the experiment about to finish is active for the user
<DFF> @@ -296,98 +296,126 @@ describe Split::Helper do
end
describe 'ab_finished' 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
+ 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 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 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 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 experiment that the user is not participating in' do
- ab_test('button_size', 'small', 'big')
+ 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(lambda {
+ ab_finished('button_size')
+ }).not_to change { Split::Alternative.new(a, 'button_size').completed_count }
+ end
- # 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(lambda {
- ab_finished('button_size')
- }).not_to change { Split::Alternative.new('small', '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 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(lambda {
- ab_finished('button_size')
- }).not_to change { Split::Alternative.new(a, 'button_size').completed_count }
- 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 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 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 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 versioned" do
+ @experiment.increment_version
+ @alternative_name = ab_test(@experiment_name, *@alternatives)
- 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
+ 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)
+ 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
- expect(ab_user[@experiment.key]).to eq(@alternative_name)
- ab_finished(@experiment_name)
- expect(ab_user.keys).to be_empty
+ 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
- it "should do nothing where the experiment was not started by this user" do
- ab_user = nil
- expect(lambda { ab_finished('some_experiment_not_started_by_the_user') }).not_to raise_exception
+ 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(lambda {
+ ab_finished('button_size')
+ }).not_to change { Split::Alternative.new('small', 'button_size').completed_count }
+ end
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)
+ 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 call the method without alternative" do
- ab_user[@experiment.key] = nil
- expect(self).not_to receive(:some_method)
- ab_finished(@experiment_name)
+ 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
| 103 | Check if the experiment about to finish is active for the user | 75 | .rb | rb | mit | splitrb/split |
10071809 | <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
expect(ab_test("link_color", "blue", "red")).to eq ab_test("link_color", "blue", "red")
end
it "should always return the winner if one is present" do
experiment.winner = "orange"
expect(ab_test("link_color", "blue", "red")).to eq("orange")
end
it "should allow the alternative to be forced by passing it in the params" do
# ?ab_test[link_color]=blue
@params = { "ab_test" => { "link_color" => "blue" } }
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")
@params = { "ab_test" => { "link_color" => "red" } }
alternative = ab_test("link_color", "blue", "red")
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
describe 'ab_finished' 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 experiment that the user is not participating in' do
ab_test('button_size', 'small', 'big')
# 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(lambda {
ab_finished('button_size')
}).not_to change { Split::Alternative.new('small', 'button_size').completed_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'
a = ab_test('button_size', 'small', 'big')
expect(a).to eq('small')
expect(lambda {
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
it "should do nothing where the experiment was not started by this user" do
ab_user = nil
expect(lambda { ab_finished('some_experiment_not_started_by_the_user') }).not_to raise_exception
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
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> Check if the experiment about to finish is active for the user
<DFF> @@ -296,98 +296,126 @@ describe Split::Helper do
end
describe 'ab_finished' 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
+ 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 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 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 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 experiment that the user is not participating in' do
- ab_test('button_size', 'small', 'big')
+ 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(lambda {
+ ab_finished('button_size')
+ }).not_to change { Split::Alternative.new(a, 'button_size').completed_count }
+ end
- # 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(lambda {
- ab_finished('button_size')
- }).not_to change { Split::Alternative.new('small', '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 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(lambda {
- ab_finished('button_size')
- }).not_to change { Split::Alternative.new(a, 'button_size').completed_count }
- 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 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 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 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 versioned" do
+ @experiment.increment_version
+ @alternative_name = ab_test(@experiment_name, *@alternatives)
- 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
+ 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)
+ 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
- expect(ab_user[@experiment.key]).to eq(@alternative_name)
- ab_finished(@experiment_name)
- expect(ab_user.keys).to be_empty
+ 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
- it "should do nothing where the experiment was not started by this user" do
- ab_user = nil
- expect(lambda { ab_finished('some_experiment_not_started_by_the_user') }).not_to raise_exception
+ 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(lambda {
+ ab_finished('button_size')
+ }).not_to change { Split::Alternative.new('small', 'button_size').completed_count }
+ end
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)
+ 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 call the method without alternative" do
- ab_user[@experiment.key] = nil
- expect(self).not_to receive(:some_method)
- ab_finished(@experiment_name)
+ 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
| 103 | Check if the experiment about to finish is active for the user | 75 | .rb | rb | mit | splitrb/split |
10071810 | <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
describe "#next_alternative" do
context "with multiple alternatives" do
let(:experiment) { Split::ExperimentCatalog.find_or_create("link_color", "blue", "red", "green") }
context "with winner" do
it "should always return the winner" do
green = Split::Alternative.new("green", "link_color")
experiment.winner = "green"
expect(experiment.next_alternative.name).to eq("green")
green.increment_participation
expect(experiment.next_alternative.name).to eq("green")
end
end
context "without winner" do
it "should use the specified algorithm" do
experiment.algorithm = Split::Algorithms::Whiplash
expect(experiment.algorithm).to receive(:choose_alternative).and_return(Split::Alternative.new("green", "link_color"))
expect(experiment.next_alternative.name).to eq("green")
end
end
end
context "with single alternative" do
let(:experiment) { Split::ExperimentCatalog.find_or_create("link_color", "blue") }
it "should always return the only alternative" do
expect(experiment.next_alternative.name).to eq("blue")
expect(experiment.next_alternative.name).to eq("blue")
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
Split::ExperimentCatalog.clear_cache
expect(Split::ExperimentCatalog.find("link_color").goals).to eq(["purchase", "refund"])
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> Added `cache_catalog` config
<DFF> @@ -530,7 +530,6 @@ describe Split::Experiment do
it "should reset an experiment if it is loaded with different goals" do
same_but_different_goals
- Split::ExperimentCatalog.clear_cache
expect(Split::ExperimentCatalog.find("link_color").goals).to eq(["purchase", "refund"])
end
| 0 | Added `cache_catalog` config | 1 | .rb | rb | mit | splitrb/split |
10071811 | <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
describe "#next_alternative" do
context "with multiple alternatives" do
let(:experiment) { Split::ExperimentCatalog.find_or_create("link_color", "blue", "red", "green") }
context "with winner" do
it "should always return the winner" do
green = Split::Alternative.new("green", "link_color")
experiment.winner = "green"
expect(experiment.next_alternative.name).to eq("green")
green.increment_participation
expect(experiment.next_alternative.name).to eq("green")
end
end
context "without winner" do
it "should use the specified algorithm" do
experiment.algorithm = Split::Algorithms::Whiplash
expect(experiment.algorithm).to receive(:choose_alternative).and_return(Split::Alternative.new("green", "link_color"))
expect(experiment.next_alternative.name).to eq("green")
end
end
end
context "with single alternative" do
let(:experiment) { Split::ExperimentCatalog.find_or_create("link_color", "blue") }
it "should always return the only alternative" do
expect(experiment.next_alternative.name).to eq("blue")
expect(experiment.next_alternative.name).to eq("blue")
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
Split::ExperimentCatalog.clear_cache
expect(Split::ExperimentCatalog.find("link_color").goals).to eq(["purchase", "refund"])
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> Added `cache_catalog` config
<DFF> @@ -530,7 +530,6 @@ describe Split::Experiment do
it "should reset an experiment if it is loaded with different goals" do
same_but_different_goals
- Split::ExperimentCatalog.clear_cache
expect(Split::ExperimentCatalog.find("link_color").goals).to eq(["purchase", "refund"])
end
| 0 | Added `cache_catalog` config | 1 | .rb | rb | mit | splitrb/split |
10071812 | <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
describe "#next_alternative" do
context "with multiple alternatives" do
let(:experiment) { Split::ExperimentCatalog.find_or_create("link_color", "blue", "red", "green") }
context "with winner" do
it "should always return the winner" do
green = Split::Alternative.new("green", "link_color")
experiment.winner = "green"
expect(experiment.next_alternative.name).to eq("green")
green.increment_participation
expect(experiment.next_alternative.name).to eq("green")
end
end
context "without winner" do
it "should use the specified algorithm" do
experiment.algorithm = Split::Algorithms::Whiplash
expect(experiment.algorithm).to receive(:choose_alternative).and_return(Split::Alternative.new("green", "link_color"))
expect(experiment.next_alternative.name).to eq("green")
end
end
end
context "with single alternative" do
let(:experiment) { Split::ExperimentCatalog.find_or_create("link_color", "blue") }
it "should always return the only alternative" do
expect(experiment.next_alternative.name).to eq("blue")
expect(experiment.next_alternative.name).to eq("blue")
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
Split::ExperimentCatalog.clear_cache
expect(Split::ExperimentCatalog.find("link_color").goals).to eq(["purchase", "refund"])
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> Added `cache_catalog` config
<DFF> @@ -530,7 +530,6 @@ describe Split::Experiment do
it "should reset an experiment if it is loaded with different goals" do
same_but_different_goals
- Split::ExperimentCatalog.clear_cache
expect(Split::ExperimentCatalog.find("link_color").goals).to eq(["purchase", "refund"])
end
| 0 | Added `cache_catalog` config | 1 | .rb | rb | mit | splitrb/split |
10071813 | <NME> AUTHORS
<BEF> Ask Solem <[email protected]>
Rune Halvorsen <[email protected]>
Russell Sim <[email protected]>
Brian Rosner <[email protected]>
Hugo Lopes Tavares <[email protected]>
Sverre Johansen <[email protected]>
Bo Shi <[email protected]>
Carl Meyer <[email protected]>
Vinícius das Chagas Silva <[email protected]>
Stefan Foulis <[email protected]>
Michael Richardson <[email protected]>
Halldór Rúnarsson <[email protected]>
Brent Tubbs <[email protected]>
David Cramer <[email protected]>
<MSG> Added Stefan Foulis to AUTHORS
<DFF> @@ -7,3 +7,4 @@ Sverre Johansen <[email protected]>
Bo Shi <[email protected]>
Carl Meyer <[email protected]>
Vinícius das Chagas Silva <[email protected]>
+Stefan Foulis <[email protected]>
| 1 | Added Stefan Foulis to AUTHORS | 0 | AUTHORS | bsd-3-clause | ask/chishop |
|
10071814 | <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
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], 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?
```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> Merge pull request #321 from rdunlop/master
Update Warden Authentication Example to include :delete.
<DFF> @@ -317,7 +317,7 @@ 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], constraints: -> (request) do
+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?
| 1 | Merge pull request #321 from rdunlop/master | 1 | .md | md | mit | splitrb/split |
10071815 | <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
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], 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?
```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> Merge pull request #321 from rdunlop/master
Update Warden Authentication Example to include :delete.
<DFF> @@ -317,7 +317,7 @@ 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], constraints: -> (request) do
+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?
| 1 | Merge pull request #321 from rdunlop/master | 1 | .md | md | mit | splitrb/split |
10071816 | <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
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], 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?
```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> Merge pull request #321 from rdunlop/master
Update Warden Authentication Example to include :delete.
<DFF> @@ -317,7 +317,7 @@ 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], constraints: -> (request) do
+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?
| 1 | Merge pull request #321 from rdunlop/master | 1 | .md | md | mit | splitrb/split |
10071817 | <NME> dashboard_helpers_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/dashboard/helpers"
include Split::DashboardHelpers
describe Split::DashboardHelpers do
confidence_level(Complex(2e-18, -0.03)).should eql('No Change')
end
it "should consider a z-score of 1.96 < z < 2.57 as 95% confident" do
confidence_level(2.12).should eql('95% confidence')
end
it "should consider a z-score of -1.96 > z > -2.57 as 95% confident" do
confidence_level(-2.12).should eql('95% confidence')
end
end
end
it "should consider a z-score of 1.96 <= z < 2.58 as 95% confident" do
expect(confidence_level(1.96)).to eq("95% confidence")
expect(confidence_level(2.00)).to eq("95% confidence")
end
it "should consider a z-score of z >= 2.58 as 99% confident" do
expect(confidence_level(2.58)).to eq("99% confidence")
expect(confidence_level(3.00)).to eq("99% confidence")
end
describe "#round" do
it "can round number strings" do
expect(round("3.1415")).to eq BigDecimal("3.14")
end
it "can round number strings for precsion" do
expect(round("3.1415", 1)).to eq BigDecimal("3.1")
end
it "can handle invalid number strings" do
expect(round("N/A")).to be_zero
end
end
end
end
<MSG> Since we only care if the difference is greater than zero we only need a z-score of 1.65, corresponding to the positive half of the normal curve.
We are not interested in negative z numbers. The null hypothesis is
that the control is not performing worse. We only have to be confident
it's better to disprove the null hypothese, which means we only care
about the positive tail of the normal distribution.
<DFF> @@ -9,12 +9,9 @@ describe Split::DashboardHelpers do
confidence_level(Complex(2e-18, -0.03)).should eql('No Change')
end
- it "should consider a z-score of 1.96 < z < 2.57 as 95% confident" do
- confidence_level(2.12).should eql('95% confidence')
+ it "should consider a z-score of 1.645 < z < 1.96 as 95% confident" do
+ confidence_level(1.80).should eql('95% confidence')
end
- it "should consider a z-score of -1.96 > z > -2.57 as 95% confident" do
- confidence_level(-2.12).should eql('95% confidence')
- end
end
end
| 2 | Since we only care if the difference is greater than zero we only need a z-score of 1.65, corresponding to the positive half of the normal curve. | 5 | .rb | rb | mit | splitrb/split |
10071818 | <NME> dashboard_helpers_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/dashboard/helpers"
include Split::DashboardHelpers
describe Split::DashboardHelpers do
confidence_level(Complex(2e-18, -0.03)).should eql('No Change')
end
it "should consider a z-score of 1.96 < z < 2.57 as 95% confident" do
confidence_level(2.12).should eql('95% confidence')
end
it "should consider a z-score of -1.96 > z > -2.57 as 95% confident" do
confidence_level(-2.12).should eql('95% confidence')
end
end
end
it "should consider a z-score of 1.96 <= z < 2.58 as 95% confident" do
expect(confidence_level(1.96)).to eq("95% confidence")
expect(confidence_level(2.00)).to eq("95% confidence")
end
it "should consider a z-score of z >= 2.58 as 99% confident" do
expect(confidence_level(2.58)).to eq("99% confidence")
expect(confidence_level(3.00)).to eq("99% confidence")
end
describe "#round" do
it "can round number strings" do
expect(round("3.1415")).to eq BigDecimal("3.14")
end
it "can round number strings for precsion" do
expect(round("3.1415", 1)).to eq BigDecimal("3.1")
end
it "can handle invalid number strings" do
expect(round("N/A")).to be_zero
end
end
end
end
<MSG> Since we only care if the difference is greater than zero we only need a z-score of 1.65, corresponding to the positive half of the normal curve.
We are not interested in negative z numbers. The null hypothesis is
that the control is not performing worse. We only have to be confident
it's better to disprove the null hypothese, which means we only care
about the positive tail of the normal distribution.
<DFF> @@ -9,12 +9,9 @@ describe Split::DashboardHelpers do
confidence_level(Complex(2e-18, -0.03)).should eql('No Change')
end
- it "should consider a z-score of 1.96 < z < 2.57 as 95% confident" do
- confidence_level(2.12).should eql('95% confidence')
+ it "should consider a z-score of 1.645 < z < 1.96 as 95% confident" do
+ confidence_level(1.80).should eql('95% confidence')
end
- it "should consider a z-score of -1.96 > z > -2.57 as 95% confident" do
- confidence_level(-2.12).should eql('95% confidence')
- end
end
end
| 2 | Since we only care if the difference is greater than zero we only need a z-score of 1.65, corresponding to the positive half of the normal curve. | 5 | .rb | rb | mit | splitrb/split |
10071819 | <NME> dashboard_helpers_spec.rb
<BEF> # frozen_string_literal: true
require "spec_helper"
require "split/dashboard/helpers"
include Split::DashboardHelpers
describe Split::DashboardHelpers do
confidence_level(Complex(2e-18, -0.03)).should eql('No Change')
end
it "should consider a z-score of 1.96 < z < 2.57 as 95% confident" do
confidence_level(2.12).should eql('95% confidence')
end
it "should consider a z-score of -1.96 > z > -2.57 as 95% confident" do
confidence_level(-2.12).should eql('95% confidence')
end
end
end
it "should consider a z-score of 1.96 <= z < 2.58 as 95% confident" do
expect(confidence_level(1.96)).to eq("95% confidence")
expect(confidence_level(2.00)).to eq("95% confidence")
end
it "should consider a z-score of z >= 2.58 as 99% confident" do
expect(confidence_level(2.58)).to eq("99% confidence")
expect(confidence_level(3.00)).to eq("99% confidence")
end
describe "#round" do
it "can round number strings" do
expect(round("3.1415")).to eq BigDecimal("3.14")
end
it "can round number strings for precsion" do
expect(round("3.1415", 1)).to eq BigDecimal("3.1")
end
it "can handle invalid number strings" do
expect(round("N/A")).to be_zero
end
end
end
end
<MSG> Since we only care if the difference is greater than zero we only need a z-score of 1.65, corresponding to the positive half of the normal curve.
We are not interested in negative z numbers. The null hypothesis is
that the control is not performing worse. We only have to be confident
it's better to disprove the null hypothese, which means we only care
about the positive tail of the normal distribution.
<DFF> @@ -9,12 +9,9 @@ describe Split::DashboardHelpers do
confidence_level(Complex(2e-18, -0.03)).should eql('No Change')
end
- it "should consider a z-score of 1.96 < z < 2.57 as 95% confident" do
- confidence_level(2.12).should eql('95% confidence')
+ it "should consider a z-score of 1.645 < z < 1.96 as 95% confident" do
+ confidence_level(1.80).should eql('95% confidence')
end
- it "should consider a z-score of -1.96 > z > -2.57 as 95% confident" do
- confidence_level(-2.12).should eql('95% confidence')
- end
end
end
| 2 | Since we only care if the difference is greater than zero we only need a z-score of 1.65, corresponding to the positive half of the normal curve. | 5 | .rb | rb | mit | splitrb/split |
10071820 | <NME> goals_collection_spec.rb
<BEF> ADDFILE
<MSG> Introduce GoalsCollection and refactor
Towards a more object-oriented approach, i introduced the GoalsCollection
class and refactored the code so that the overall complexity of
Experiment#save is reduced.
<DFF> @@ -0,0 +1,80 @@
+require 'spec_helper'
+require 'split/goals_collection'
+require 'time'
+
+describe Split::GoalsCollection do
+ let(:experiment_name) { 'experiment_name' }
+
+ describe 'initialization' do
+ let(:goals_collection) {
+ Split::GoalsCollection.new('experiment_name', ['goal1', 'goal2'])
+ }
+
+ it "should have an experiment_name" do
+ expect(goals_collection.instance_variable_get(:@experiment_name)).
+ to eq('experiment_name')
+ end
+
+ it "should have a list of goals" do
+ expect(goals_collection.instance_variable_get(:@goals)).
+ to eq(['goal1', 'goal2'])
+ end
+ end
+
+ describe "#validate!" do
+ it "should't raise ArgumentError if @goals is nil?" do
+ goals_collection = Split::GoalsCollection.new('experiment_name')
+ expect { goals_collection.validate! }.not_to raise_error(ArgumentError)
+ end
+
+ it "should raise ArgumentError if @goals is not an Array" do
+ goals_collection = Split::GoalsCollection.
+ new('experiment_name', 'not an array')
+ expect { goals_collection.validate! }.to raise_error(ArgumentError)
+ end
+
+ it "should't raise ArgumentError if @goals is an array" do
+ goals_collection = Split::GoalsCollection.
+ new('experiment_name', ['an array'])
+ expect { goals_collection.validate! }.not_to raise_error(ArgumentError)
+ end
+ end
+
+ describe "#delete" do
+ let(:goals_key) { "#{experiment_name}:goals" }
+
+ it "should delete goals from redis" do
+ goals_collection = Split::GoalsCollection.new(experiment_name, ['goal1'])
+ goals_collection.save
+
+ goals_collection.delete
+ expect(Split.redis.exists(goals_key)).to be false
+ end
+ end
+
+ describe "#save" do
+ let(:goals_key) { "#{experiment_name}:goals" }
+
+ it "should return false if @goals is nil" do
+ goals_collection = Split::GoalsCollection.
+ new(experiment_name, nil)
+
+ expect(goals_collection.save).to be false
+ end
+
+ it "should save goals to redis if @goals is valid" do
+ goals = ['valid goal 1', 'valid goal 2']
+ collection = Split::GoalsCollection.new(experiment_name, goals)
+ collection.save
+
+ expect(Split.redis.lrange(goals_key, 0, -1)).to eq goals
+ end
+
+ it "should return @goals if @goals is valid" do
+ goals_collection = Split::GoalsCollection.
+ new(experiment_name, ['valid goal'])
+
+ expect(goals_collection.save).to eq(['valid goal'])
+ end
+ end
+end
| 80 | Introduce GoalsCollection and refactor | 0 | .rb | rb | mit | splitrb/split |
10071821 | <NME> goals_collection_spec.rb
<BEF> ADDFILE
<MSG> Introduce GoalsCollection and refactor
Towards a more object-oriented approach, i introduced the GoalsCollection
class and refactored the code so that the overall complexity of
Experiment#save is reduced.
<DFF> @@ -0,0 +1,80 @@
+require 'spec_helper'
+require 'split/goals_collection'
+require 'time'
+
+describe Split::GoalsCollection do
+ let(:experiment_name) { 'experiment_name' }
+
+ describe 'initialization' do
+ let(:goals_collection) {
+ Split::GoalsCollection.new('experiment_name', ['goal1', 'goal2'])
+ }
+
+ it "should have an experiment_name" do
+ expect(goals_collection.instance_variable_get(:@experiment_name)).
+ to eq('experiment_name')
+ end
+
+ it "should have a list of goals" do
+ expect(goals_collection.instance_variable_get(:@goals)).
+ to eq(['goal1', 'goal2'])
+ end
+ end
+
+ describe "#validate!" do
+ it "should't raise ArgumentError if @goals is nil?" do
+ goals_collection = Split::GoalsCollection.new('experiment_name')
+ expect { goals_collection.validate! }.not_to raise_error(ArgumentError)
+ end
+
+ it "should raise ArgumentError if @goals is not an Array" do
+ goals_collection = Split::GoalsCollection.
+ new('experiment_name', 'not an array')
+ expect { goals_collection.validate! }.to raise_error(ArgumentError)
+ end
+
+ it "should't raise ArgumentError if @goals is an array" do
+ goals_collection = Split::GoalsCollection.
+ new('experiment_name', ['an array'])
+ expect { goals_collection.validate! }.not_to raise_error(ArgumentError)
+ end
+ end
+
+ describe "#delete" do
+ let(:goals_key) { "#{experiment_name}:goals" }
+
+ it "should delete goals from redis" do
+ goals_collection = Split::GoalsCollection.new(experiment_name, ['goal1'])
+ goals_collection.save
+
+ goals_collection.delete
+ expect(Split.redis.exists(goals_key)).to be false
+ end
+ end
+
+ describe "#save" do
+ let(:goals_key) { "#{experiment_name}:goals" }
+
+ it "should return false if @goals is nil" do
+ goals_collection = Split::GoalsCollection.
+ new(experiment_name, nil)
+
+ expect(goals_collection.save).to be false
+ end
+
+ it "should save goals to redis if @goals is valid" do
+ goals = ['valid goal 1', 'valid goal 2']
+ collection = Split::GoalsCollection.new(experiment_name, goals)
+ collection.save
+
+ expect(Split.redis.lrange(goals_key, 0, -1)).to eq goals
+ end
+
+ it "should return @goals if @goals is valid" do
+ goals_collection = Split::GoalsCollection.
+ new(experiment_name, ['valid goal'])
+
+ expect(goals_collection.save).to eq(['valid goal'])
+ end
+ end
+end
| 80 | Introduce GoalsCollection and refactor | 0 | .rb | rb | mit | splitrb/split |
10071822 | <NME> goals_collection_spec.rb
<BEF> ADDFILE
<MSG> Introduce GoalsCollection and refactor
Towards a more object-oriented approach, i introduced the GoalsCollection
class and refactored the code so that the overall complexity of
Experiment#save is reduced.
<DFF> @@ -0,0 +1,80 @@
+require 'spec_helper'
+require 'split/goals_collection'
+require 'time'
+
+describe Split::GoalsCollection do
+ let(:experiment_name) { 'experiment_name' }
+
+ describe 'initialization' do
+ let(:goals_collection) {
+ Split::GoalsCollection.new('experiment_name', ['goal1', 'goal2'])
+ }
+
+ it "should have an experiment_name" do
+ expect(goals_collection.instance_variable_get(:@experiment_name)).
+ to eq('experiment_name')
+ end
+
+ it "should have a list of goals" do
+ expect(goals_collection.instance_variable_get(:@goals)).
+ to eq(['goal1', 'goal2'])
+ end
+ end
+
+ describe "#validate!" do
+ it "should't raise ArgumentError if @goals is nil?" do
+ goals_collection = Split::GoalsCollection.new('experiment_name')
+ expect { goals_collection.validate! }.not_to raise_error(ArgumentError)
+ end
+
+ it "should raise ArgumentError if @goals is not an Array" do
+ goals_collection = Split::GoalsCollection.
+ new('experiment_name', 'not an array')
+ expect { goals_collection.validate! }.to raise_error(ArgumentError)
+ end
+
+ it "should't raise ArgumentError if @goals is an array" do
+ goals_collection = Split::GoalsCollection.
+ new('experiment_name', ['an array'])
+ expect { goals_collection.validate! }.not_to raise_error(ArgumentError)
+ end
+ end
+
+ describe "#delete" do
+ let(:goals_key) { "#{experiment_name}:goals" }
+
+ it "should delete goals from redis" do
+ goals_collection = Split::GoalsCollection.new(experiment_name, ['goal1'])
+ goals_collection.save
+
+ goals_collection.delete
+ expect(Split.redis.exists(goals_key)).to be false
+ end
+ end
+
+ describe "#save" do
+ let(:goals_key) { "#{experiment_name}:goals" }
+
+ it "should return false if @goals is nil" do
+ goals_collection = Split::GoalsCollection.
+ new(experiment_name, nil)
+
+ expect(goals_collection.save).to be false
+ end
+
+ it "should save goals to redis if @goals is valid" do
+ goals = ['valid goal 1', 'valid goal 2']
+ collection = Split::GoalsCollection.new(experiment_name, goals)
+ collection.save
+
+ expect(Split.redis.lrange(goals_key, 0, -1)).to eq goals
+ end
+
+ it "should return @goals if @goals is valid" do
+ goals_collection = Split::GoalsCollection.
+ new(experiment_name, ['valid goal'])
+
+ expect(goals_collection.save).to eq(['valid goal'])
+ end
+ end
+end
| 80 | Introduce GoalsCollection and refactor | 0 | .rb | rb | mit | splitrb/split |
10071823 | <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 $) {
if (options.message.is('input,textarea,select')) {
this.message = options.message.val();
} else {
this.message = options.message.text();
}
if (typeof this.title === 'undefined' && typeof options.message.attr('title') === 'string') {
this.title = options.message.attr('title');
}
}
if (typeof options.icon === 'string') {
this.icon = options.icon;
}
if (options.sticky) {
this.duration = Infinity;
} else {
this.duration = options.duration || 5000;
}
// Call callback if it's defined (this = meow object)
if (typeof options.beforeCreate === 'function') {
options.beforeCreate.call(that);
}
// Add the meow to the meow area
this.container.append($(window.document.createElement('div'))
.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()) {
that.destroy();
}
} else {
that.hovered = true;
that.manifest.addClass('hover');
}
});
// 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
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()) {
that.destroy();
}
} else {
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 = $.fn.meow;
}(jQuery, window));
<MSG> fixed line 152. You were right Chris. Forgot some parens
<DFF> @@ -149,7 +149,7 @@
that.hovered = false;
that.manifest.removeClass('hover');
// Destroy the mow on mouseleave if it's timed out
- if (that.timestamp + that.duration <= new Date.getTime()) {
+ if (that.timestamp + that.duration <= new Date().getTime()) {
that.destroy();
}
} else {
| 1 | fixed line 152. You were right Chris. Forgot some parens | 1 | .js | meow | mit | zacstewart/Meow |
10071824 | <NME> jquery.meow.js
<BEF> (function ($, 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 $) {
if (options.message.is('input,textarea,select')) {
this.message = options.message.val();
} else {
this.message = options.message.text();
}
if (typeof this.title === 'undefined' && typeof options.message.attr('title') === 'string') {
this.title = options.message.attr('title');
}
}
if (typeof options.icon === 'string') {
this.icon = options.icon;
}
if (options.sticky) {
this.duration = Infinity;
} else {
this.duration = options.duration || 5000;
}
// Call callback if it's defined (this = meow object)
if (typeof options.beforeCreate === 'function') {
options.beforeCreate.call(that);
}
// Add the meow to the meow area
this.container.append($(window.document.createElement('div'))
.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()) {
that.destroy();
}
} else {
that.hovered = true;
that.manifest.addClass('hover');
}
});
// 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
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()) {
that.destroy();
}
} else {
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> fixed line 152. You were right Chris. Forgot some parens
<DFF> @@ -149,7 +149,7 @@
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()) {
+ if (that.timestamp + that.duration <= new Date().getTime()) {
that.destroy();
}
} else {
| 1 | fixed line 152. You were right Chris. Forgot some parens | 1 | .js | meow | mit | zacstewart/Meow |
10071825 | <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",
"bug_tracker_uri" => "https://github.com/splitrb/split/issues",
"wiki_uri" => "https://github.com/splitrb/split/wiki",
"mailing_list_uri" => "https://groups.google.com/d/forum/split-ruby"
}
s.required_ruby_version = ">= 2.5.0"
s.required_rubygems_version = ">= 2.0.0"
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 'simple-random', '>= 0.9.3'
s.add_development_dependency 'bundler', '~> 1.14'
s.add_development_dependency 'simplecov', '~> 0.15'
s.add_development_dependency 'rack-test', '~> 0.6'
s.add_development_dependency 'rake', '~> 12'
s.add_development_dependency "rspec", "~> 3.7"
s.add_development_dependency "pry", "~> 0.10"
s.add_development_dependency "rails", ">= 5.0"
end
<MSG> Merge pull request #545 from splitrb/fix-travis-build
Update travis config and add Ruby 2.6.0
<DFF> @@ -34,7 +34,7 @@ Gem::Specification.new do |s|
s.add_dependency 'sinatra', '>= 1.2.6'
s.add_dependency 'simple-random', '>= 0.9.3'
- s.add_development_dependency 'bundler', '~> 1.14'
+ s.add_development_dependency 'bundler', '>= 1.17'
s.add_development_dependency 'simplecov', '~> 0.15'
s.add_development_dependency 'rack-test', '~> 0.6'
s.add_development_dependency 'rake', '~> 12'
| 1 | Merge pull request #545 from splitrb/fix-travis-build | 1 | .gemspec | gemspec | mit | splitrb/split |
10071826 | <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",
"bug_tracker_uri" => "https://github.com/splitrb/split/issues",
"wiki_uri" => "https://github.com/splitrb/split/wiki",
"mailing_list_uri" => "https://groups.google.com/d/forum/split-ruby"
}
s.required_ruby_version = ">= 2.5.0"
s.required_rubygems_version = ">= 2.0.0"
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 'simple-random', '>= 0.9.3'
s.add_development_dependency 'bundler', '~> 1.14'
s.add_development_dependency 'simplecov', '~> 0.15'
s.add_development_dependency 'rack-test', '~> 0.6'
s.add_development_dependency 'rake', '~> 12'
s.add_development_dependency "rspec", "~> 3.7"
s.add_development_dependency "pry", "~> 0.10"
s.add_development_dependency "rails", ">= 5.0"
end
<MSG> Merge pull request #545 from splitrb/fix-travis-build
Update travis config and add Ruby 2.6.0
<DFF> @@ -34,7 +34,7 @@ Gem::Specification.new do |s|
s.add_dependency 'sinatra', '>= 1.2.6'
s.add_dependency 'simple-random', '>= 0.9.3'
- s.add_development_dependency 'bundler', '~> 1.14'
+ s.add_development_dependency 'bundler', '>= 1.17'
s.add_development_dependency 'simplecov', '~> 0.15'
s.add_development_dependency 'rack-test', '~> 0.6'
s.add_development_dependency 'rake', '~> 12'
| 1 | Merge pull request #545 from splitrb/fix-travis-build | 1 | .gemspec | gemspec | mit | splitrb/split |
10071827 | <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",
"bug_tracker_uri" => "https://github.com/splitrb/split/issues",
"wiki_uri" => "https://github.com/splitrb/split/wiki",
"mailing_list_uri" => "https://groups.google.com/d/forum/split-ruby"
}
s.required_ruby_version = ">= 2.5.0"
s.required_rubygems_version = ">= 2.0.0"
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 'simple-random', '>= 0.9.3'
s.add_development_dependency 'bundler', '~> 1.14'
s.add_development_dependency 'simplecov', '~> 0.15'
s.add_development_dependency 'rack-test', '~> 0.6'
s.add_development_dependency 'rake', '~> 12'
s.add_development_dependency "rspec", "~> 3.7"
s.add_development_dependency "pry", "~> 0.10"
s.add_development_dependency "rails", ">= 5.0"
end
<MSG> Merge pull request #545 from splitrb/fix-travis-build
Update travis config and add Ruby 2.6.0
<DFF> @@ -34,7 +34,7 @@ Gem::Specification.new do |s|
s.add_dependency 'sinatra', '>= 1.2.6'
s.add_dependency 'simple-random', '>= 0.9.3'
- s.add_development_dependency 'bundler', '~> 1.14'
+ s.add_development_dependency 'bundler', '>= 1.17'
s.add_development_dependency 'simplecov', '~> 0.15'
s.add_development_dependency 'rack-test', '~> 0.6'
s.add_development_dependency 'rake', '~> 12'
| 1 | Merge pull request #545 from splitrb/fix-travis-build | 1 | .gemspec | gemspec | mit | splitrb/split |
10071828 | <NME> parser.ts
<BEF> import { strictEqual as equal, throws } from 'assert';
import parser from '../src/parser';
import tokenizer from '../src/tokenizer';
import stringify from './assets/stringify';
import { ParserOptions } from '../src';
const parse = (abbr: string, options?: ParserOptions) => parser(tokenizer(abbr), options);
const str = (abbr: string, options?: ParserOptions) => stringify(parse(abbr, options));
describe('Parser', () => {
it('basic abbreviations', () => {
equal(str('p'), '<p></p>');
equal(str('p{text}'), '<p>text</p>');
equal(str('div.width1\\/2'), '<div class=width1/2></div>');
equal(str('#sample*3'), '<?*3 id=sample></?>');
equal(str('a>b'), '<a><b></b></a>');
equal(str('a+b'), '<a></a><b></b>');
equal(str('a+b>c+d'), '<a></a><b><c></c><d></d></b>');
equal(str('a+b'), '<a></a><b></b>');
equal(str('a+b>c+d'), '<a></a><b><c></c><d></d></b>');
equal(str('a>b>c+e'), '<a><b><c></c><e></e></b></a>');
equal(str('a>b>c^d'), '<a><b><c></c></b><d></d></a>');
equal(str('a>b>c^^^^d'), '<a><b><c></c></b></a><d></d>');
equal(str('a:b>c'), '<a:b><c></c></a:b>');
equal(str('ul.nav[title="foo"]'), '<ul class=nav title="foo"></ul>');
});
it('groups', () => {
equal(str('a>(b>c)+d'), '<a>(<b><c></c></b>)<d></d></a>');
equal(str('(a>b)+(c>d)'), '(<a><b></b></a>)(<c><d></d></c>)');
equal(str('a>((b>c)(d>e))f'), '<a>((<b><c></c></b>)(<d><e></e></d>))<f></f></a>');
equal(str('a>((((b>c))))+d'), '<a>((((<b><c></c></b>))))<d></d></a>');
equal(str('a>(((b>c))*4)+d'), '<a>(((<b><c></c></b>))*4)<d></d></a>');
equal(str('(div>dl>(dt+dd)*2)'), '(<div><dl>(<dt></dt><dd></dd>)*2</dl></div>)');
equal(str('a>()'), '<a>()</a>');
});
it('attributes', () => {
equal(str('[].foo'), '<? class=foo></?>');
equal(str('[a]'), '<? a></?>');
equal(str('[a b c [d]]'), '<? a b c [d]></?>');
equal(str('[a=b]'), '<? a=b></?>');
equal(str('[a=b c= d=e]'), '<? a=b c d=e></?>');
equal(str('[a=b.c d=тест]'), '<? a=b.c d=тест></?>');
equal(str('[[a]=b (c)=d]'), '<? [a]=b (c)=d></?>');
// Quoted attribute values
equal(str('[a="b"]'), '<? a="b"></?>');
equal(str('[a="b" c=\'d\' e=""]'), '<? a="b" c=\'d\' e=""></?>');
equal(str('[[a]="b" (c)=\'d\']'), '<? [a]="b" (c)=\'d\'></?>');
// Mixed quoted
equal(str('[a="foo\'bar" b=\'foo"bar\' c="foo\\\"bar"]'), '<? a="foo\'bar" b=\'foo"bar\' c="foo"bar"></?>');
// Boolean & implied attributes
equal(str('[a. b.]'), '<? a. b.></?>');
equal(str('[!a !b.]'), '<? !a !b.></?>');
// Default values
equal(str('["a.b"]'), '<? ?="a.b"></?>');
equal(str('[\'a.b\' "c=d" foo=bar "./test.html"]'), '<? ?=\'a.b\' ?="c=d" foo=bar ?="./test.html"></?>');
// Expressions as values
equal(str('[foo={1 + 2} bar={fn(1, "foo")}]'), '<? foo={1 + 2} bar={fn(1, "foo")}></?>');
// Tabstops as unquoted values
equal(str('[name=${1} value=${2:test}]'), '<? name=${1} value=${2:test}></?>');
});
it('malformed attributes', () => {
equal(str('[a'), '<? a></?>');
equal(str('[a={foo]'), '<? a={foo]></?>');
throws(() => str('[a="foo]'), /Unclosed quote/);
throws(() => str('[a=b=c]'), /Unexpected "Operator" token/);
});
it('elements', () => {
equal(str('div'), '<div></div>');
equal(str('div.foo'), '<div class=foo></div>');
equal(str('div#foo'), '<div id=foo></div>');
equal(str('div#foo.bar'), '<div id=foo class=bar></div>');
equal(str('div.foo#bar'), '<div class=foo id=bar></div>');
equal(str('div.foo.bar.baz'), '<div class=foo class=bar class=baz></div>');
equal(str('.foo'), '<? class=foo></?>');
equal(str('#foo'), '<? id=foo></?>');
equal(str('.foo_bar'), '<? class=foo_bar></?>');
equal(str('#foo.bar'), '<? id=foo class=bar></?>');
// Attribute shorthands
equal(str('.'), '<? class></?>');
equal(str('#'), '<? id></?>');
equal(str('#.'), '<? id class></?>');
equal(str('.#.'), '<? class id class></?>');
equal(str('.a..'), '<? class=a class></?>');
// Elements with attributes
equal(str('div[foo=bar]'), '<div foo=bar></div>');
equal(str('div.a[b=c]'), '<div class=a b=c></div>');
equal(str('div[b=c].a'), '<div b=c class=a></div>');
equal(str('div[a=b][c="d"]'), '<div a=b c="d"></div>');
equal(str('[b=c]'), '<? b=c></?>');
equal(str('.a[b=c]'), '<? class=a b=c></?>');
equal(str('[b=c].a#d'), '<? b=c class=a id=d></?>');
equal(str('[b=c]a'), '<? b=c></?><a></a>', 'Do not consume node name after attribute set');
// Element with text
equal(str('div{foo}'), '<div>foo</div>');
equal(str('{foo}'), '<?>foo</?>');
// Mixed
equal(str('div.foo{bar}'), '<div class=foo>bar</div>');
equal(str('.foo{bar}#baz'), '<? class=foo id=baz>bar</?>');
equal(str('.foo[b=c]{bar}'), '<? class=foo b=c>bar</?>');
// Repeated element
equal(str('div.foo*3'), '<div*3 class=foo></div>');
equal(str('.foo*'), '<?* class=foo></?>');
equal(str('.a[b=c]*10'), '<?*10 class=a b=c></?>');
equal(str('.a*10[b=c]'), '<?*10 class=a b=c></?>');
equal(str('.a*10{text}'), '<?*10 class=a>text</?>');
// Self-closing element
equal(str('div/'), '<div />');
equal(str('.foo/'), '<? class=foo />');
equal(str('.foo[bar]/'), '<? class=foo bar />');
equal(str('.foo/*3'), '<?*3 class=foo />');
equal(str('.foo*3/'), '<?*3 class=foo />');
throws(() => parse('/'), /Unexpected character/);
});
it('JSX', () => {
const opt = { jsx: true };
equal(str('foo.bar', opt), '<foo class=bar></foo>');
equal(str('Foo.bar', opt), '<Foo class=bar></Foo>');
equal(str('Foo.Bar', opt), '<Foo.Bar></Foo.Bar>');
equal(str('Foo.', opt), '<Foo class></Foo>');
equal(str('Foo.Bar.baz', opt), '<Foo.Bar class=baz></Foo.Bar>');
equal(str('Foo.Bar.Baz', opt), '<Foo.Bar.Baz></Foo.Bar.Baz>');
equal(str('.{theme.class}', opt), '<? class=theme.class></?>');
equal(str('#{id}', opt), '<? id=id></?>');
equal(str('Foo.{theme.class}', opt), '<Foo class=theme.class></Foo>');
});
it('errors', () => {
throws(() => parse('str?'), /Unexpected character at 4/);
throws(() => parse('foo,bar'), /Unexpected character at 4/);
equal(str('foo\\,bar'), '<foo,bar></foo,bar>');
equal(str('foo\\'), '<foo></foo>');
});
it('missing braces', () => {
// Do not throw errors on missing closing braces
equal(str('div[title="test"'), '<div title="test"></div>');
equal(str('div(foo'), '<div></div>(<foo></foo>)');
equal(str('div{foo'), '<div>foo</div>');
});
});
<MSG> Ensure dots in attributes are supported
Fixes #562
<DFF> @@ -14,6 +14,9 @@ describe('Parser', () => {
equal(str('div.width1\\/2'), '<div class=width1/2></div>');
equal(str('#sample*3'), '<?*3 id=sample></?>');
+ // https://github.com/emmetio/emmet/issues/562
+ equal(str('li[repeat.for="todo of todoList"]'), '<li repeat.for="todo of todoList"></li>', 'Dots in attribute names');
+
equal(str('a>b'), '<a><b></b></a>');
equal(str('a+b'), '<a></a><b></b>');
equal(str('a+b>c+d'), '<a></a><b><c></c><d></d></b>');
| 3 | Ensure dots in attributes are supported | 0 | .ts | ts | mit | emmetio/emmet |
10071829 | <NME> parser.ts
<BEF> import { strictEqual as equal, throws } from 'assert';
import parser from '../src/parser';
import tokenizer from '../src/tokenizer';
import stringify from './assets/stringify';
import { ParserOptions } from '../src';
const parse = (abbr: string, options?: ParserOptions) => parser(tokenizer(abbr), options);
const str = (abbr: string, options?: ParserOptions) => stringify(parse(abbr, options));
describe('Parser', () => {
it('basic abbreviations', () => {
equal(str('p'), '<p></p>');
equal(str('p{text}'), '<p>text</p>');
equal(str('div.width1\\/2'), '<div class=width1/2></div>');
equal(str('#sample*3'), '<?*3 id=sample></?>');
equal(str('a>b'), '<a><b></b></a>');
equal(str('a+b'), '<a></a><b></b>');
equal(str('a+b>c+d'), '<a></a><b><c></c><d></d></b>');
equal(str('a+b'), '<a></a><b></b>');
equal(str('a+b>c+d'), '<a></a><b><c></c><d></d></b>');
equal(str('a>b>c+e'), '<a><b><c></c><e></e></b></a>');
equal(str('a>b>c^d'), '<a><b><c></c></b><d></d></a>');
equal(str('a>b>c^^^^d'), '<a><b><c></c></b></a><d></d>');
equal(str('a:b>c'), '<a:b><c></c></a:b>');
equal(str('ul.nav[title="foo"]'), '<ul class=nav title="foo"></ul>');
});
it('groups', () => {
equal(str('a>(b>c)+d'), '<a>(<b><c></c></b>)<d></d></a>');
equal(str('(a>b)+(c>d)'), '(<a><b></b></a>)(<c><d></d></c>)');
equal(str('a>((b>c)(d>e))f'), '<a>((<b><c></c></b>)(<d><e></e></d>))<f></f></a>');
equal(str('a>((((b>c))))+d'), '<a>((((<b><c></c></b>))))<d></d></a>');
equal(str('a>(((b>c))*4)+d'), '<a>(((<b><c></c></b>))*4)<d></d></a>');
equal(str('(div>dl>(dt+dd)*2)'), '(<div><dl>(<dt></dt><dd></dd>)*2</dl></div>)');
equal(str('a>()'), '<a>()</a>');
});
it('attributes', () => {
equal(str('[].foo'), '<? class=foo></?>');
equal(str('[a]'), '<? a></?>');
equal(str('[a b c [d]]'), '<? a b c [d]></?>');
equal(str('[a=b]'), '<? a=b></?>');
equal(str('[a=b c= d=e]'), '<? a=b c d=e></?>');
equal(str('[a=b.c d=тест]'), '<? a=b.c d=тест></?>');
equal(str('[[a]=b (c)=d]'), '<? [a]=b (c)=d></?>');
// Quoted attribute values
equal(str('[a="b"]'), '<? a="b"></?>');
equal(str('[a="b" c=\'d\' e=""]'), '<? a="b" c=\'d\' e=""></?>');
equal(str('[[a]="b" (c)=\'d\']'), '<? [a]="b" (c)=\'d\'></?>');
// Mixed quoted
equal(str('[a="foo\'bar" b=\'foo"bar\' c="foo\\\"bar"]'), '<? a="foo\'bar" b=\'foo"bar\' c="foo"bar"></?>');
// Boolean & implied attributes
equal(str('[a. b.]'), '<? a. b.></?>');
equal(str('[!a !b.]'), '<? !a !b.></?>');
// Default values
equal(str('["a.b"]'), '<? ?="a.b"></?>');
equal(str('[\'a.b\' "c=d" foo=bar "./test.html"]'), '<? ?=\'a.b\' ?="c=d" foo=bar ?="./test.html"></?>');
// Expressions as values
equal(str('[foo={1 + 2} bar={fn(1, "foo")}]'), '<? foo={1 + 2} bar={fn(1, "foo")}></?>');
// Tabstops as unquoted values
equal(str('[name=${1} value=${2:test}]'), '<? name=${1} value=${2:test}></?>');
});
it('malformed attributes', () => {
equal(str('[a'), '<? a></?>');
equal(str('[a={foo]'), '<? a={foo]></?>');
throws(() => str('[a="foo]'), /Unclosed quote/);
throws(() => str('[a=b=c]'), /Unexpected "Operator" token/);
});
it('elements', () => {
equal(str('div'), '<div></div>');
equal(str('div.foo'), '<div class=foo></div>');
equal(str('div#foo'), '<div id=foo></div>');
equal(str('div#foo.bar'), '<div id=foo class=bar></div>');
equal(str('div.foo#bar'), '<div class=foo id=bar></div>');
equal(str('div.foo.bar.baz'), '<div class=foo class=bar class=baz></div>');
equal(str('.foo'), '<? class=foo></?>');
equal(str('#foo'), '<? id=foo></?>');
equal(str('.foo_bar'), '<? class=foo_bar></?>');
equal(str('#foo.bar'), '<? id=foo class=bar></?>');
// Attribute shorthands
equal(str('.'), '<? class></?>');
equal(str('#'), '<? id></?>');
equal(str('#.'), '<? id class></?>');
equal(str('.#.'), '<? class id class></?>');
equal(str('.a..'), '<? class=a class></?>');
// Elements with attributes
equal(str('div[foo=bar]'), '<div foo=bar></div>');
equal(str('div.a[b=c]'), '<div class=a b=c></div>');
equal(str('div[b=c].a'), '<div b=c class=a></div>');
equal(str('div[a=b][c="d"]'), '<div a=b c="d"></div>');
equal(str('[b=c]'), '<? b=c></?>');
equal(str('.a[b=c]'), '<? class=a b=c></?>');
equal(str('[b=c].a#d'), '<? b=c class=a id=d></?>');
equal(str('[b=c]a'), '<? b=c></?><a></a>', 'Do not consume node name after attribute set');
// Element with text
equal(str('div{foo}'), '<div>foo</div>');
equal(str('{foo}'), '<?>foo</?>');
// Mixed
equal(str('div.foo{bar}'), '<div class=foo>bar</div>');
equal(str('.foo{bar}#baz'), '<? class=foo id=baz>bar</?>');
equal(str('.foo[b=c]{bar}'), '<? class=foo b=c>bar</?>');
// Repeated element
equal(str('div.foo*3'), '<div*3 class=foo></div>');
equal(str('.foo*'), '<?* class=foo></?>');
equal(str('.a[b=c]*10'), '<?*10 class=a b=c></?>');
equal(str('.a*10[b=c]'), '<?*10 class=a b=c></?>');
equal(str('.a*10{text}'), '<?*10 class=a>text</?>');
// Self-closing element
equal(str('div/'), '<div />');
equal(str('.foo/'), '<? class=foo />');
equal(str('.foo[bar]/'), '<? class=foo bar />');
equal(str('.foo/*3'), '<?*3 class=foo />');
equal(str('.foo*3/'), '<?*3 class=foo />');
throws(() => parse('/'), /Unexpected character/);
});
it('JSX', () => {
const opt = { jsx: true };
equal(str('foo.bar', opt), '<foo class=bar></foo>');
equal(str('Foo.bar', opt), '<Foo class=bar></Foo>');
equal(str('Foo.Bar', opt), '<Foo.Bar></Foo.Bar>');
equal(str('Foo.', opt), '<Foo class></Foo>');
equal(str('Foo.Bar.baz', opt), '<Foo.Bar class=baz></Foo.Bar>');
equal(str('Foo.Bar.Baz', opt), '<Foo.Bar.Baz></Foo.Bar.Baz>');
equal(str('.{theme.class}', opt), '<? class=theme.class></?>');
equal(str('#{id}', opt), '<? id=id></?>');
equal(str('Foo.{theme.class}', opt), '<Foo class=theme.class></Foo>');
});
it('errors', () => {
throws(() => parse('str?'), /Unexpected character at 4/);
throws(() => parse('foo,bar'), /Unexpected character at 4/);
equal(str('foo\\,bar'), '<foo,bar></foo,bar>');
equal(str('foo\\'), '<foo></foo>');
});
it('missing braces', () => {
// Do not throw errors on missing closing braces
equal(str('div[title="test"'), '<div title="test"></div>');
equal(str('div(foo'), '<div></div>(<foo></foo>)');
equal(str('div{foo'), '<div>foo</div>');
});
});
<MSG> Ensure dots in attributes are supported
Fixes #562
<DFF> @@ -14,6 +14,9 @@ describe('Parser', () => {
equal(str('div.width1\\/2'), '<div class=width1/2></div>');
equal(str('#sample*3'), '<?*3 id=sample></?>');
+ // https://github.com/emmetio/emmet/issues/562
+ equal(str('li[repeat.for="todo of todoList"]'), '<li repeat.for="todo of todoList"></li>', 'Dots in attribute names');
+
equal(str('a>b'), '<a><b></b></a>');
equal(str('a+b'), '<a></a><b></b>');
equal(str('a+b>c+d'), '<a></a><b><c></c><d></d></b>');
| 3 | Ensure dots in attributes are supported | 0 | .ts | ts | mit | emmetio/emmet |
10071830 | <NME> transducers.js
<BEF> var transducers =
/******/ (function(modules) { // webpackBootstrap
/******/ // The module cache
/******/ var installedModules = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/
/******/ // Check if module is in cache
/******/ if(installedModules[moduleId])
/******/ return installedModules[moduleId].exports;
/******/
/******/ // Create a new module (and put it into the cache)
/******/ var module = installedModules[moduleId] = {
/******/ exports: {},
/******/ id: moduleId,
/******/ loaded: false
/******/ };
/******/
/******/ // Execute the module function
/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ // Flag the module as loaded
/******/ module.loaded = true;
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/******/
/******/ // expose the modules object (__webpack_modules__)
/******/ __webpack_require__.m = modules;
/******/
/******/ // expose the module cache
/******/ __webpack_require__.c = installedModules;
/******/
/******/ // __webpack_public_path__
/******/ __webpack_require__.p = "";
/******/
/******/ // Load entry module and return exports
/******/ return __webpack_require__(0);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ function(module, exports, __webpack_require__) {
// basic protocol helpers
var symbolExists = typeof Symbol !== 'undefined';
var protocols = {
iterator: symbolExists ? Symbol.iterator : '@@iterator',
transformer: symbolExists ? Symbol('transformer') : '@@transformer'
};
function throwProtocolError(name, coll) {
throw new Error("don't know how to " + name + " collection: " +
coll);
}
function fulfillsProtocol(obj, name) {
if(name === 'iterator') {
// Accept ill-formed iterators that don't conform to the
// protocol by accepting just next()
return obj[protocols.iterator] || obj.next;
}
return obj[protocols[name]];
}
function getProtocolProperty(obj, name) {
return obj[protocols[name]];
}
function iterator(coll) {
var iter = getProtocolProperty(coll, 'iterator');
if(iter) {
return iter.call(coll);
}
else if(coll.next) {
// Basic duck typing to accept an ill-formed iterator that doesn't
// conform to the iterator protocol (all iterators should have the
// @@iterator method and return themselves, but some engines don't
// have that on generators like older v8)
return coll;
}
else if(isArray(coll)) {
return new ArrayIterator(coll);
}
else if(isObject(coll)) {
return new ObjectIterator(coll);
}
}
function ArrayIterator(arr) {
this.arr = arr;
this.index = 0;
}
ArrayIterator.prototype.next = function() {
if(this.index < this.arr.length) {
return {
value: this.arr[this.index++],
done: false
};
}
return {
done: true
}
};
function ObjectIterator(obj) {
this.obj = obj;
this.keys = Object.keys(obj);
this.index = 0;
}
ObjectIterator.prototype.next = function() {
if(this.index < this.keys.length) {
var k = this.keys[this.index++];
return {
value: [k, this.obj[k]],
done: false
};
}
return {
done: true
}
};
// helpers
var toString = Object.prototype.toString;
var isArray = typeof Array.isArray === 'function' ? Array.isArray : function(obj) {
return toString.call(obj) == '[object Array]';
};
function isFunction(x) {
return typeof x === 'function';
}
function isObject(x) {
return x instanceof Object &&
Object.getPrototypeOf(x) === Object.getPrototypeOf({});
}
function isNumber(x) {
return typeof x === 'number';
}
function Reduced(val) {
this.val = val;
}
function reduce(coll, xform, init) {
if(isArray(coll)) {
var result = init;
var index = -1;
var len = coll.length;
while(++index < len) {
result = xform.step(result, coll[index]);
if(result instanceof Reduced) {
return result.val;
}
}
return xform.result(result);
}
else if(isObject(coll) || fulfillsProtocol(coll, 'iterator')) {
var result = init;
var iter = iterator(coll);
var val = iter.next();
while(!val.done) {
result = xform.step(result, val.value);
if(result instanceof Reduced) {
return result.val;
}
val = iter.next();
}
return xform.result(result);
}
throwProtocolError('iterate', coll);
}
function transduce(coll, xform, reducer, init) {
xform = xform(reducer);
if(init === undefined) {
init = xform.init();
}
return reduce(coll, xform, init);
}
function compose() {
var funcs = Array.prototype.slice.call(arguments);
return function(r) {
var value = r;
for(var i=funcs.length-1; i>=0; i--) {
value = funcs[i](value);
}
return value;
}
}
// transformations
function transformer(f) {
return {
init: function() {
throw new Error('init value unavailable');
},
result: function(v) {
return v;
},
step: f
};
}
function bound(f, ctx, count) {
count = count != null ? count : 1;
if(!ctx) {
return f;
}
else {
switch(count) {
case 1:
return function(x) {
return f.call(ctx, x);
}
case 2:
return function(x, y) {
return f.call(ctx, x, y);
}
default:
return f.bind(ctx);
}
}
}
function arrayMap(arr, f, ctx) {
var index = -1;
var length = arr.length;
var result = Array(length);
f = bound(f, ctx, 2);
while (++index < length) {
result[index] = f(arr[index], index);
}
return result;
}
function arrayFilter(arr, f, ctx) {
var len = arr.length;
var result = [];
f = bound(f, ctx, 2);
for(var i=0; i<len; i++) {
if(f(arr[i], i)) {
result.push(arr[i]);
}
}
return result;
}
function Map(f, xform) {
this.xform = xform;
this.f = f;
}
Map.prototype.init = function() {
return this.xform.init();
};
Map.prototype.result = function(v) {
return this.xform.result(v);
};
Map.prototype.step = function(res, input) {
return this.xform.step(res, this.f(input));
};
function map(coll, f, ctx) {
if(isFunction(coll)) { ctx = f; f = coll; coll = null; }
f = bound(f, ctx);
if(coll) {
if(isArray(coll)) {
return arrayMap(coll, f, ctx);
}
return seq(coll, map(f));
}
return function(xform) {
return new Map(f, xform);
}
}
function Filter(f, xform) {
this.xform = xform;
this.f = f;
}
Filter.prototype.init = function() {
return this.xform.init();
};
Filter.prototype.result = function(v) {
return this.xform.result(v);
};
Filter.prototype.step = function(res, input) {
if(this.f(input)) {
return this.xform.step(res, input);
}
return res;
};
function filter(coll, f, ctx) {
if(isFunction(coll)) { ctx = f; f = coll; coll = null; }
f = bound(f, ctx);
if(coll) {
if(isArray(coll)) {
return arrayFilter(coll, f, ctx);
}
return seq(coll, filter(f));
}
return function(xform) {
return new Filter(f, xform);
};
}
function remove(coll, f, ctx) {
if(isFunction(coll)) { ctx = f; f = coll; coll = null; }
f = bound(f, ctx);
return filter(coll, function(x) { return !f(x); });
}
function keep(coll) {
return filter(coll, function(x) { return x != null });
}
function Dedupe(xform) {
this.xform = xform;
this.last = undefined;
}
Dedupe.prototype.init = function() {
return this.xform.init();
};
Dedupe.prototype.result = function(v) {
return this.xform.result(v);
};
Dedupe.prototype.step = function(result, input) {
if(input !== this.last) {
this.last = input;
return this.xform.step(result, input);
}
return result;
};
function dedupe(coll) {
if(coll) {
return seq(coll, dedupe());
}
return function(xform) {
return new Dedupe(xform);
}
}
function TakeWhile(f, xform) {
this.xform = xform;
this.f = f;
}
TakeWhile.prototype.init = function() {
return this.xform.init();
};
TakeWhile.prototype.result = function(v) {
return this.xform.result(v);
};
TakeWhile.prototype.step = function(result, input) {
if(this.f(input)) {
return this.xform.step(result, input);
}
return new Reduced(result);
};
function takeWhile(coll, f, ctx) {
if(isFunction(coll)) { ctx = f; f = coll; coll = null; }
f = bound(f, ctx);
if(coll) {
return seq(coll, takeWhile(f));
}
return function(xform) {
return new TakeWhile(f, xform);
}
}
function Take(n, xform) {
this.n = n;
this.i = 0;
this.xform = xform;
}
Take.prototype.init = function() {
return this.xform.init();
};
Take.prototype.result = function(v) {
return this.xform.result(v);
};
Take.prototype.step = function(result, input) {
if(this.i++ < this.n) {
return this.xform.step(result, input);
}
return new Reduced(result);
};
function take(coll, n) {
if(isNumber(coll)) { n = coll; coll = null }
if(coll) {
return seq(coll, take(n));
}
return function(xform) {
return new Take(n, xform);
}
}
function Drop(n, xform) {
this.n = n;
this.i = 0;
this.xform = xform;
}
Drop.prototype.init = function() {
return this.xform.init();
};
Drop.prototype.result = function(v) {
return this.xform.result(v);
};
Drop.prototype.step = function(result, input) {
if(this.i++ < this.n) {
return result;
}
return this.xform.step(result, input);
};
function drop(coll, n) {
if(isNumber(coll)) { n = coll; coll = null }
if(coll) {
return seq(coll, drop(n));
}
return function(xform) {
return new Drop(n, xform);
}
}
function DropWhile(f, xform) {
this.xform = xform;
this.f = f;
this.dropping = true;
}
DropWhile.prototype.init = function() {
return this.xform.init();
};
DropWhile.prototype.result = function(v) {
return this.xform.result(v);
};
DropWhile.prototype.step = function(result, input) {
if(this.dropping) {
if(this.f(input)) {
return result;
}
else {
this.dropping = false;
}
}
return this.xform.step(result, input);
};
function dropWhile(coll, f, ctx) {
if(isFunction(coll)) { ctx = f; f = coll; coll = null; }
f = bound(f, ctx);
if(coll) {
return seq(coll, dropWhile(f));
}
return function(xform) {
return new DropWhile(f, xform);
}
}
// pure transducers (cannot take collections)
function Cat(xform) {
this.xform = xform;
}
Cat.prototype.init = function() {
return this.xform.init();
};
Cat.prototype.result = function(v) {
return this.xform.result(v);
};
Cat.prototype.step = function(result, input) {
var xform = this.xform;
var newxform = {
init: function() {
return xform.init();
},
result: function(v) {
return v;
},
step: function(result, input) {
var val = xform.step(result, input);
return (val instanceof Reduced) ? new Reduced(val) : val;
}
}
return reduce(input, newxform, result);
};
function cat(xform) {
return new Cat(xform);
}
function mapcat(f, ctx) {
f = bound(f, ctx);
return compose(map(f), cat);
}
// collection helpers
function push(arr, x) {
arr.push(x);
return arr;
}
function merge(obj, x) {
if(isArray(x) && x.length === 2) {
obj[x[0]] = x[1];
}
else {
var keys = Object.keys(x);
var len = keys.length;
for(var i=0; i<len; i++) {
obj[keys[i]] = x[keys[i]];
}
}
return obj;
}
var arrayReducer = {
init: function() {
return [];
},
result: function(v) {
return v;
},
step: push
}
var objReducer = {
init: function() {
return {};
},
result: function(v) {
return v;
},
step: merge
};
function getReducer(coll) {
if(isArray(coll)) {
return arrayReducer;
}
else if(isObject(coll)) {
return objReducer;
}
else if(fulfillsProtocol(coll, 'transformer')) {
return getProtocolProperty(coll, 'transformer');
}
throwProtocolError('getReducer', coll);
}
// building new collections
function toArray(coll, xform) {
if(!xform) {
return reduce(coll, arrayReducer, []);
}
return transduce(coll, xform, arrayReducer, []);
}
function toObj(coll, xform) {
if(!xform) {
return reduce(coll, objReducer, {});
}
return transduce(coll, xform, objReducer, {});
}
function toIter(coll, xform) {
if(!xform) {
return iterator(coll);
}
return new LazyTransformer(xform, coll);
}
function seq(coll, xform) {
if(isArray(coll)) {
return transduce(coll, xform, arrayReducer, []);
}
else if(isObject(coll)) {
return transduce(coll, xform, objReducer, {});
}
else if(fulfillsProtocol(coll, 'transformer')) {
var transformer = getProtocolProperty(coll, 'transformer');
return transduce(coll, xform, transformer, transformer.init());
}
else if(fulfillsProtocol(coll, 'iterator')) {
return new LazyTransformer(xform, coll);
}
throwProtocolError('sequence', coll);
}
function into(to, xform, from) {
if(isArray(to)) {
return transduce(from, xform, arrayReducer, to);
}
else if(isObject(to)) {
return transduce(from, xform, objReducer, to);
}
else if(fulfillsProtocol(to, 'transformer')) {
return transduce(from,
xform,
getProtocolProperty(to, 'transformer'),
to);
}
throwProtocolError('into', to);
}
// laziness
var stepper = {
result: function(v) {
return (v instanceof Reduced) ? v.val : v;
},
step: function(lt, x) {
lt.items.push(x);
return lt.rest;
}
}
function Stepper(xform, iter) {
this.xform = xform(stepper);
this.iter = iter;
}
Stepper.prototype.step = function(lt) {
var len = lt.items.length;
while(lt.items.length === len) {
var n = this.iter.next();
if(n.done || n.value instanceof Reduced) {
// finalize
this.xform.result(this);
break;
}
// step
this.xform.step(lt, n.value);
}
}
function LazyTransformer(xform, coll) {
this.iter = iterator(coll);
this.items = [];
this.stepper = new Stepper(xform, iterator(coll));
}
LazyTransformer.prototype[protocols.iterator] = function() {
return this;
}
LazyTransformer.prototype.next = function() {
this.step();
if(this.items.length) {
return {
value: this.items.pop(),
done: false
}
}
else {
return { done: true };
}
};
LazyTransformer.prototype.step = function() {
if(!this.items.length) {
this.stepper.step(this);
}
}
// util
function range(n) {
var arr = new Array(n);
for(var i=0; i<arr.length; i++) {
arr[i] = i;
}
return arr;
}
module.exports = {
reduce: reduce,
transformer: transformer,
Reduced: Reduced,
iterator: iterator,
push: push,
merge: merge,
transduce: transduce,
seq: seq,
toArray: toArray,
toObj: toObj,
toIter: toIter,
into: into,
compose: compose,
map: map,
filter: filter,
remove: remove,
cat: cat,
mapcat: mapcat,
keep: keep,
dedupe: dedupe,
take: take,
takeWhile: takeWhile,
drop: drop,
dropWhile: dropWhile,
range: range,
protocols: protocols,
LazyTransformer: LazyTransformer
};
/***/ }
/******/ ])
<MSG> update browser file
<DFF> @@ -150,8 +150,42 @@ var transducers =
return typeof x === 'number';
}
- function Reduced(val) {
- this.val = val;
+ function Reduced(value) {
+ this.__transducers_reduced__ = true;
+ this.value = value;
+ }
+
+ function isReduced(x) {
+ return (x instanceof Reduced) || (x && x.__transducers_reduced__);
+ }
+
+ function deref(x) {
+ return x.value;
+ }
+
+ /**
+ * This is for transforms that may call their nested transforms before
+ * Reduced-wrapping the result (e.g. "take"), to avoid nested Reduced.
+ */
+ function ensureReduced(val) {
+ if(isReduced(val)) {
+ return val;
+ } else {
+ return new Reduced(val);
+ }
+ }
+
+ /**
+ * This is for tranforms that call their nested transforms when
+ * performing completion (like "partition"), to avoid signaling
+ * termination after already completing.
+ */
+ function ensureUnreduced(v) {
+ if(isReduced(v)) {
+ return deref(v);
+ } else {
+ return v;
+ }
}
function reduce(coll, xform, init) {
@@ -161,8 +195,9 @@ var transducers =
var len = coll.length;
while(++index < len) {
result = xform.step(result, coll[index]);
- if(result instanceof Reduced) {
- return result.val;
+ if(isReduced(result)) {
+ result = deref(result);
+ break;
}
}
return xform.result(result);
@@ -173,8 +208,9 @@ var transducers =
var val = iter.next();
while(!val.done) {
result = xform.step(result, val.value);
- if(result instanceof Reduced) {
- return result.val;
+ if(isReduced(result)) {
+ result = deref(result);
+ break;
}
val = iter.next();
}
@@ -421,10 +457,16 @@ var transducers =
};
Take.prototype.step = function(result, input) {
- if(this.i++ < this.n) {
- return this.xform.step(result, input);
+ if (this.i < this.n) {
+ result = this.xform.step(result, input);
+ if(this.i + 1 >= this.n) {
+ // Finish reducing on the same step as the final value. TODO:
+ // double-check that this doesn't break any semantics
+ result = ensureReduced(result);
+ }
}
- return new Reduced(result);
+ this.i++;
+ return result;
};
function take(coll, n) {
@@ -511,6 +553,98 @@ var transducers =
}
}
+ function Partition(n, xform) {
+ this.n = n;
+ this.i = 0;
+ this.xform = xform;
+ this.part = new Array(n);
+ }
+
+ Partition.prototype.init = function() {
+ return this.xform.init();
+ };
+
+ Partition.prototype.result = function(v) {
+ if (this.i > 0) {
+ return ensureUnreduced(this.xform.step(v, this.part.slice(0, this.i)));
+ }
+ return this.xform.result(v);
+ };
+
+ Partition.prototype.step = function(result, input) {
+ this.part[this.i] = input;
+ this.i += 1;
+ if (this.i === this.n) {
+ var out = this.part.slice(0, this.n);
+ this.part = new Array(this.n);
+ this.i = 0;
+ return this.xform.step(result, out);
+ }
+ return result;
+ };
+
+ function partition(coll, n) {
+ if (isNumber(coll)) {
+ n = coll; coll = null;
+ }
+
+ if (coll) {
+ return seq(coll, partition(n));
+ }
+
+ return function(xform) {
+ return new Partition(n, xform);
+ };
+ }
+
+ var NOTHING = {};
+
+ function PartitionBy(f, xform) {
+ // TODO: take an "opts" object that allows the user to specify
+ // equality
+ this.f = f;
+ this.xform = xform;
+ this.part = [];
+ this.last = NOTHING;
+ }
+
+ PartitionBy.prototype.init = function() {
+ return this.xform.init();
+ };
+
+ PartitionBy.prototype.result = function(v) {
+ var l = this.part.length;
+ if (l > 0) {
+ return ensureUnreduced(this.xform.step(v, this.part.slice(0, l)));
+ }
+ return this.xform.result(v);
+ };
+
+ PartitionBy.prototype.step = function(result, input) {
+ var current = this.f(input);
+ if (current === this.last || this.last === NOTHING) {
+ this.part.push(input);
+ } else {
+ result = this.xform.step(result, this.part);
+ this.part = [input];
+ }
+ this.last = current;
+ return result;
+ };
+
+ function partitionBy(coll, f, ctx) {
+ if (isFunction(coll)) { ctx = f; f = coll; coll = null; }
+ f = bound(f, ctx);
+
+ if (coll) {
+ return seq(coll, partitionBy(f));
+ }
+
+ return function(xform) {
+ return new PartitionBy(f, xform);
+ };
+ }
+
// pure transducers (cannot take collections)
function Cat(xform) {
@@ -536,7 +670,7 @@ var transducers =
},
step: function(result, input) {
var val = xform.step(result, input);
- return (val instanceof Reduced) ? new Reduced(val) : val;
+ return isReduced(val) ? deref(val) : val;
}
}
@@ -666,7 +800,7 @@ var transducers =
var stepper = {
result: function(v) {
- return (v instanceof Reduced) ? v.val : v;
+ return isReduced(v) ? deref(v) : v;
},
step: function(lt, x) {
lt.items.push(x);
@@ -683,7 +817,7 @@ var transducers =
var len = lt.items.length;
while(lt.items.length === len) {
var n = this.iter.next();
- if(n.done || n.value instanceof Reduced) {
+ if(n.done || isReduced(n.value)) {
// finalize
this.xform.result(this);
break;
@@ -760,6 +894,8 @@ var transducers =
takeWhile: takeWhile,
drop: drop,
dropWhile: dropWhile,
+ partition: partition,
+ partitionBy: partitionBy,
range: range,
protocols: protocols,
| 148 | update browser file | 12 | .js | js | bsd-2-clause | jlongster/transducers.js |
10071831 | <NME> dashboard.rb
<BEF> # frozen_string_literal: true
require "sinatra/base"
require "split"
require "bigdecimal"
require "split/dashboard/helpers"
require "split/dashboard/pagination_helpers"
module Split
class Dashboard < Sinatra::Base
dir = File.dirname(File.expand_path(__FILE__))
set :views, "#{dir}/dashboard/views"
set :public_folder, "#{dir}/dashboard/public"
set :static, true
set :method_override, true
helpers Split::DashboardHelpers
helpers Split::DashboardPaginationHelpers
get "/" do
# Display experiments without a winner at the top of the dashboard
@experiments = Split::ExperimentCatalog.all_active_first
@unintialized_experiments = Split.configuration.experiments.keys - @experiments.map(&:name)
@metrics = Split::Metric.all
# Display Rails Environment mode (or Rack version if not using Rails)
if Object.const_defined?("Rails")
@current_env = Rails.env.titlecase
else
@current_env = "Rack: #{Rack.version}"
end
erb :index
end
post "/initialize_experiment" do
Split::ExperimentCatalog.find_or_create(params[:experiment]) unless params[:experiment].nil? || params[:experiment].empty?
redirect url("/")
end
post "/force_alternative" do
experiment = Split::ExperimentCatalog.find(params[:experiment])
alternative = Split::Alternative.new(params[:alternative], experiment.name)
cookies = JSON.parse(request.cookies["split_override"]) rescue {}
cookies[experiment.name] = alternative.name
response.set_cookie("split_override", { value: cookies.to_json, path: "/" })
redirect url("/")
end
post "/experiment" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@alternative = Split::Alternative.new(params[:alternative], params[:experiment])
@experiment.winner = @alternative.name
redirect url("/")
end
post "/start" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@experiment.start
redirect url("/")
end
post "/reset" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@experiment.reset
redirect url("/")
end
post "/reopen" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@experiment.reset_winner
redirect url("/")
end
post "/update_cohorting" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
case params[:cohorting_action].downcase
when "enable"
@experiment.enable_cohorting
when "disable"
@experiment.disable_cohorting
end
redirect url("/")
end
delete "/experiment" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@experiment.delete
redirect url("/")
end
end
end
<MSG> Handle when Rails is partially loaded as a Gem
...and not an application
```
NoMethodError: undefined method `env' for Rails:Module
/bundle/ruby/3.0.0/gems/split-3.4.1/lib/split/dashboard.rb:28:in `block in <class:Dashboard>'
```
<DFF> @@ -26,7 +26,7 @@ module Split
@metrics = Split::Metric.all
# Display Rails Environment mode (or Rack version if not using Rails)
- if Object.const_defined?("Rails")
+ if Object.const_defined?("Rails") && Rails.respond_to?(:env)
@current_env = Rails.env.titlecase
else
@current_env = "Rack: #{Rack.version}"
| 1 | Handle when Rails is partially loaded as a Gem | 1 | .rb | rb | mit | splitrb/split |
10071832 | <NME> dashboard.rb
<BEF> # frozen_string_literal: true
require "sinatra/base"
require "split"
require "bigdecimal"
require "split/dashboard/helpers"
require "split/dashboard/pagination_helpers"
module Split
class Dashboard < Sinatra::Base
dir = File.dirname(File.expand_path(__FILE__))
set :views, "#{dir}/dashboard/views"
set :public_folder, "#{dir}/dashboard/public"
set :static, true
set :method_override, true
helpers Split::DashboardHelpers
helpers Split::DashboardPaginationHelpers
get "/" do
# Display experiments without a winner at the top of the dashboard
@experiments = Split::ExperimentCatalog.all_active_first
@unintialized_experiments = Split.configuration.experiments.keys - @experiments.map(&:name)
@metrics = Split::Metric.all
# Display Rails Environment mode (or Rack version if not using Rails)
if Object.const_defined?("Rails")
@current_env = Rails.env.titlecase
else
@current_env = "Rack: #{Rack.version}"
end
erb :index
end
post "/initialize_experiment" do
Split::ExperimentCatalog.find_or_create(params[:experiment]) unless params[:experiment].nil? || params[:experiment].empty?
redirect url("/")
end
post "/force_alternative" do
experiment = Split::ExperimentCatalog.find(params[:experiment])
alternative = Split::Alternative.new(params[:alternative], experiment.name)
cookies = JSON.parse(request.cookies["split_override"]) rescue {}
cookies[experiment.name] = alternative.name
response.set_cookie("split_override", { value: cookies.to_json, path: "/" })
redirect url("/")
end
post "/experiment" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@alternative = Split::Alternative.new(params[:alternative], params[:experiment])
@experiment.winner = @alternative.name
redirect url("/")
end
post "/start" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@experiment.start
redirect url("/")
end
post "/reset" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@experiment.reset
redirect url("/")
end
post "/reopen" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@experiment.reset_winner
redirect url("/")
end
post "/update_cohorting" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
case params[:cohorting_action].downcase
when "enable"
@experiment.enable_cohorting
when "disable"
@experiment.disable_cohorting
end
redirect url("/")
end
delete "/experiment" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@experiment.delete
redirect url("/")
end
end
end
<MSG> Handle when Rails is partially loaded as a Gem
...and not an application
```
NoMethodError: undefined method `env' for Rails:Module
/bundle/ruby/3.0.0/gems/split-3.4.1/lib/split/dashboard.rb:28:in `block in <class:Dashboard>'
```
<DFF> @@ -26,7 +26,7 @@ module Split
@metrics = Split::Metric.all
# Display Rails Environment mode (or Rack version if not using Rails)
- if Object.const_defined?("Rails")
+ if Object.const_defined?("Rails") && Rails.respond_to?(:env)
@current_env = Rails.env.titlecase
else
@current_env = "Rack: #{Rack.version}"
| 1 | Handle when Rails is partially loaded as a Gem | 1 | .rb | rb | mit | splitrb/split |
10071833 | <NME> dashboard.rb
<BEF> # frozen_string_literal: true
require "sinatra/base"
require "split"
require "bigdecimal"
require "split/dashboard/helpers"
require "split/dashboard/pagination_helpers"
module Split
class Dashboard < Sinatra::Base
dir = File.dirname(File.expand_path(__FILE__))
set :views, "#{dir}/dashboard/views"
set :public_folder, "#{dir}/dashboard/public"
set :static, true
set :method_override, true
helpers Split::DashboardHelpers
helpers Split::DashboardPaginationHelpers
get "/" do
# Display experiments without a winner at the top of the dashboard
@experiments = Split::ExperimentCatalog.all_active_first
@unintialized_experiments = Split.configuration.experiments.keys - @experiments.map(&:name)
@metrics = Split::Metric.all
# Display Rails Environment mode (or Rack version if not using Rails)
if Object.const_defined?("Rails")
@current_env = Rails.env.titlecase
else
@current_env = "Rack: #{Rack.version}"
end
erb :index
end
post "/initialize_experiment" do
Split::ExperimentCatalog.find_or_create(params[:experiment]) unless params[:experiment].nil? || params[:experiment].empty?
redirect url("/")
end
post "/force_alternative" do
experiment = Split::ExperimentCatalog.find(params[:experiment])
alternative = Split::Alternative.new(params[:alternative], experiment.name)
cookies = JSON.parse(request.cookies["split_override"]) rescue {}
cookies[experiment.name] = alternative.name
response.set_cookie("split_override", { value: cookies.to_json, path: "/" })
redirect url("/")
end
post "/experiment" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@alternative = Split::Alternative.new(params[:alternative], params[:experiment])
@experiment.winner = @alternative.name
redirect url("/")
end
post "/start" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@experiment.start
redirect url("/")
end
post "/reset" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@experiment.reset
redirect url("/")
end
post "/reopen" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@experiment.reset_winner
redirect url("/")
end
post "/update_cohorting" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
case params[:cohorting_action].downcase
when "enable"
@experiment.enable_cohorting
when "disable"
@experiment.disable_cohorting
end
redirect url("/")
end
delete "/experiment" do
@experiment = Split::ExperimentCatalog.find(params[:experiment])
@experiment.delete
redirect url("/")
end
end
end
<MSG> Handle when Rails is partially loaded as a Gem
...and not an application
```
NoMethodError: undefined method `env' for Rails:Module
/bundle/ruby/3.0.0/gems/split-3.4.1/lib/split/dashboard.rb:28:in `block in <class:Dashboard>'
```
<DFF> @@ -26,7 +26,7 @@ module Split
@metrics = Split::Metric.all
# Display Rails Environment mode (or Rack version if not using Rails)
- if Object.const_defined?("Rails")
+ if Object.const_defined?("Rails") && Rails.respond_to?(:env)
@current_env = Rails.env.titlecase
else
@current_env = "Rack: #{Rack.version}"
| 1 | Handle when Rails is partially loaded as a Gem | 1 | .rb | rb | mit | splitrb/split |
10071834 | <NME> snippets.ts
<BEF> import { ok } from 'assert';
import markup from '@emmetio/abbreviation';
import html from '../snippets/html.json';
import xsl from '../snippets/xsl.json';
describe('Snippets', () => {
it('HTML', () => {
Object.keys(html).forEach(k => ok(markup(html[k]), k));
});
it('XSL', () => {
Object.keys(xsl).forEach(k => ok(markup(xsl[k]), k));
});
});
<MSG> FIxed issue with invalid nested snippets resolve
<DFF> @@ -1,11 +1,13 @@
-import { ok } from 'assert';
+import { ok, strictEqual as equal } from 'assert';
import markup from '@emmetio/abbreviation';
+import expand from '../src';
import html from '../snippets/html.json';
import xsl from '../snippets/xsl.json';
describe('Snippets', () => {
it('HTML', () => {
Object.keys(html).forEach(k => ok(markup(html[k]), k));
+ equal(expand('fset>input:c'), '<fieldset><input type="checkbox" name="" id=""></fieldset>');
});
it('XSL', () => {
| 3 | FIxed issue with invalid nested snippets resolve | 1 | .ts | ts | mit | emmetio/emmet |
10071835 | <NME> snippets.ts
<BEF> import { ok } from 'assert';
import markup from '@emmetio/abbreviation';
import html from '../snippets/html.json';
import xsl from '../snippets/xsl.json';
describe('Snippets', () => {
it('HTML', () => {
Object.keys(html).forEach(k => ok(markup(html[k]), k));
});
it('XSL', () => {
Object.keys(xsl).forEach(k => ok(markup(xsl[k]), k));
});
});
<MSG> FIxed issue with invalid nested snippets resolve
<DFF> @@ -1,11 +1,13 @@
-import { ok } from 'assert';
+import { ok, strictEqual as equal } from 'assert';
import markup from '@emmetio/abbreviation';
+import expand from '../src';
import html from '../snippets/html.json';
import xsl from '../snippets/xsl.json';
describe('Snippets', () => {
it('HTML', () => {
Object.keys(html).forEach(k => ok(markup(html[k]), k));
+ equal(expand('fset>input:c'), '<fieldset><input type="checkbox" name="" id=""></fieldset>');
});
it('XSL', () => {
| 3 | FIxed issue with invalid nested snippets resolve | 1 | .ts | ts | mit | emmetio/emmet |
10071836 | <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? }
)
self.alternatives = options_with_defaults[:alternatives]
self.goals = options_with_defaults[:goals]
self.resettable = options_with_defaults[:resettable]
self.algorithm = options_with_defaults[:algorithm]
self.metadata = options_with_defaults[:metadata]
end
def extract_alternatives_from_options(options)
alts = options[:alternatives] || []
if alts.length == 1
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!
end
def new_record?
!redis.exists?(name)
end
def ==(obj)
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> Centralize checks for experiment existance in experiment catalog
<DFF> @@ -94,7 +94,7 @@ module Split
end
def new_record?
- !redis.exists?(name)
+ ExperimentCatalog.find(name).nil?
end
def ==(obj)
| 1 | Centralize checks for experiment existance in experiment catalog | 1 | .rb | rb | mit | splitrb/split |
10071837 | <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? }
)
self.alternatives = options_with_defaults[:alternatives]
self.goals = options_with_defaults[:goals]
self.resettable = options_with_defaults[:resettable]
self.algorithm = options_with_defaults[:algorithm]
self.metadata = options_with_defaults[:metadata]
end
def extract_alternatives_from_options(options)
alts = options[:alternatives] || []
if alts.length == 1
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!
end
def new_record?
!redis.exists?(name)
end
def ==(obj)
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> Centralize checks for experiment existance in experiment catalog
<DFF> @@ -94,7 +94,7 @@ module Split
end
def new_record?
- !redis.exists?(name)
+ ExperimentCatalog.find(name).nil?
end
def ==(obj)
| 1 | Centralize checks for experiment existance in experiment catalog | 1 | .rb | rb | mit | splitrb/split |
10071838 | <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? }
)
self.alternatives = options_with_defaults[:alternatives]
self.goals = options_with_defaults[:goals]
self.resettable = options_with_defaults[:resettable]
self.algorithm = options_with_defaults[:algorithm]
self.metadata = options_with_defaults[:metadata]
end
def extract_alternatives_from_options(options)
alts = options[:alternatives] || []
if alts.length == 1
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!
end
def new_record?
!redis.exists?(name)
end
def ==(obj)
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> Centralize checks for experiment existance in experiment catalog
<DFF> @@ -94,7 +94,7 @@ module Split
end
def new_record?
- !redis.exists?(name)
+ ExperimentCatalog.find(name).nil?
end
def ==(obj)
| 1 | Centralize checks for experiment existance in experiment catalog | 1 | .rb | rb | mit | splitrb/split |
10071839 | <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: {
- [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
## Screencast
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
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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> Add a link to split-cli
<DFF> @@ -661,6 +661,7 @@ end
- [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
| 1 | Add a link to split-cli | 0 | .md | md | mit | splitrb/split |
10071840 | <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: {
- [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
## Screencast
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> Add a link to split-cli
<DFF> @@ -661,6 +661,7 @@ end
- [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
| 1 | Add a link to split-cli | 0 | .md | md | mit | splitrb/split |
10071841 | <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: {
- [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
## Screencast
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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<a href="https://opencollective.com/split/backer/29/website" target="_blank"><img src="https://opencollective.com/split/backer/29/avatar.svg"></a>
## 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)]
<a href="https://opencollective.com/split/sponsor/0/website" target="_blank"><img src="https://opencollective.com/split/sponsor/0/avatar.svg"></a>
<a href="https://opencollective.com/split/sponsor/1/website" target="_blank"><img src="https://opencollective.com/split/sponsor/1/avatar.svg"></a>
<a href="https://opencollective.com/split/sponsor/2/website" target="_blank"><img src="https://opencollective.com/split/sponsor/2/avatar.svg"></a>
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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> Add a link to split-cli
<DFF> @@ -661,6 +661,7 @@ end
- [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
| 1 | Add a link to split-cli | 0 | .md | md | mit | splitrb/split |
10071842 | <NME> spec_helper.rb
<BEF> # frozen_string_literal: true
ENV["RACK_ENV"] = "test"
require 'bundler/setup'
require 'split'
require 'ostruct'
require 'complex' if RUBY_VERSION.match(/1\.8/)
Dir['./spec/support/*.rb'].each { |f| require f }
require "split"
require "ostruct"
require "yaml"
Dir["./spec/support/*.rb"].each { |f| require f }
module GlobalSharedContext
extend RSpec::SharedContext
let(:mock_user) { Split::User.new(double(session: {})) }
before(:each) do
Split.configuration = Split::Configuration.new
Split.redis = Redis.new
Split.redis.select(10)
Split.redis.flushdb
Split::Cache.clear
@ab_user = mock_user
@params = nil
end
end
RSpec.configure do |config|
config.order = "random"
config.include GlobalSharedContext
config.raise_errors_for_deprecations!
end
def session
@session ||= {}
end
def params
@params ||= {}
end
def request(ua = "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_6; de-de) AppleWebKit/533.20.25 (KHTML, like Gecko) Version/5.0.4 Safari/533.20.27")
@request ||= begin
r = OpenStruct.new
r.user_agent = ua
r.ip = "192.168.1.1"
r
end
end
<MSG> Merge pull request #142 from phoet/fix_tests_with_yaml_and_ruby_2
require yaml as it is not loaded in 2.0.0-p0 by default
<DFF> @@ -4,6 +4,7 @@ require 'rubygems'
require 'bundler/setup'
require 'split'
require 'ostruct'
+require 'yaml'
require 'complex' if RUBY_VERSION.match(/1\.8/)
Dir['./spec/support/*.rb'].each { |f| require f }
| 1 | Merge pull request #142 from phoet/fix_tests_with_yaml_and_ruby_2 | 0 | .rb | rb | mit | splitrb/split |
10071843 | <NME> spec_helper.rb
<BEF> # frozen_string_literal: true
ENV["RACK_ENV"] = "test"
require 'bundler/setup'
require 'split'
require 'ostruct'
require 'complex' if RUBY_VERSION.match(/1\.8/)
Dir['./spec/support/*.rb'].each { |f| require f }
require "split"
require "ostruct"
require "yaml"
Dir["./spec/support/*.rb"].each { |f| require f }
module GlobalSharedContext
extend RSpec::SharedContext
let(:mock_user) { Split::User.new(double(session: {})) }
before(:each) do
Split.configuration = Split::Configuration.new
Split.redis = Redis.new
Split.redis.select(10)
Split.redis.flushdb
Split::Cache.clear
@ab_user = mock_user
@params = nil
end
end
RSpec.configure do |config|
config.order = "random"
config.include GlobalSharedContext
config.raise_errors_for_deprecations!
end
def session
@session ||= {}
end
def params
@params ||= {}
end
def request(ua = "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_6; de-de) AppleWebKit/533.20.25 (KHTML, like Gecko) Version/5.0.4 Safari/533.20.27")
@request ||= begin
r = OpenStruct.new
r.user_agent = ua
r.ip = "192.168.1.1"
r
end
end
<MSG> Merge pull request #142 from phoet/fix_tests_with_yaml_and_ruby_2
require yaml as it is not loaded in 2.0.0-p0 by default
<DFF> @@ -4,6 +4,7 @@ require 'rubygems'
require 'bundler/setup'
require 'split'
require 'ostruct'
+require 'yaml'
require 'complex' if RUBY_VERSION.match(/1\.8/)
Dir['./spec/support/*.rb'].each { |f| require f }
| 1 | Merge pull request #142 from phoet/fix_tests_with_yaml_and_ruby_2 | 0 | .rb | rb | mit | splitrb/split |
10071844 | <NME> spec_helper.rb
<BEF> # frozen_string_literal: true
ENV["RACK_ENV"] = "test"
require 'bundler/setup'
require 'split'
require 'ostruct'
require 'complex' if RUBY_VERSION.match(/1\.8/)
Dir['./spec/support/*.rb'].each { |f| require f }
require "split"
require "ostruct"
require "yaml"
Dir["./spec/support/*.rb"].each { |f| require f }
module GlobalSharedContext
extend RSpec::SharedContext
let(:mock_user) { Split::User.new(double(session: {})) }
before(:each) do
Split.configuration = Split::Configuration.new
Split.redis = Redis.new
Split.redis.select(10)
Split.redis.flushdb
Split::Cache.clear
@ab_user = mock_user
@params = nil
end
end
RSpec.configure do |config|
config.order = "random"
config.include GlobalSharedContext
config.raise_errors_for_deprecations!
end
def session
@session ||= {}
end
def params
@params ||= {}
end
def request(ua = "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_6; de-de) AppleWebKit/533.20.25 (KHTML, like Gecko) Version/5.0.4 Safari/533.20.27")
@request ||= begin
r = OpenStruct.new
r.user_agent = ua
r.ip = "192.168.1.1"
r
end
end
<MSG> Merge pull request #142 from phoet/fix_tests_with_yaml_and_ruby_2
require yaml as it is not loaded in 2.0.0-p0 by default
<DFF> @@ -4,6 +4,7 @@ require 'rubygems'
require 'bundler/setup'
require 'split'
require 'ostruct'
+require 'yaml'
require 'complex' if RUBY_VERSION.match(/1\.8/)
Dir['./spec/support/*.rb'].each { |f| require f }
| 1 | Merge pull request #142 from phoet/fix_tests_with_yaml_and_ruby_2 | 0 | .rb | rb | mit | splitrb/split |
10071845 | <NME> README.md
<BEF> Semantic-UI-Angular
===================
Status: Currently migrating from https://github.com/caitp/angular-semantic
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular#info=devDependencies)
[](http://commitizen.github.io/cz-cli/)
**Semantic-UI-Angular** is a pure AngularJS 1.x set of directives for Semantic-UI components.
We are considering Angular 2 support in the future. We've decided to use TypeScript as a step to Angular 2 friendly environment.
Status
------
**Work in progress**
We are working on setting up proper environment, contribution guidelines and everything else for comfortable community contributions.
Once we release first `alpha.0` we are happy to get community help.
Support
-------
We support AngularJS 1.4.8 version.
Building Semantic-UI-Angular
----------------------------
You have to have `nodejs` installed before running following commands.
```
npm install
npm run build
```
The distribution packages will be stored in `dist` folder.
Running tests
-------------
Single run:
```
npm test
```
Dev mode:
```
npm run test-dev
```
<MSG> chore(README): Update README with dependencies badges
<DFF> @@ -1,4 +1,6 @@
Semantic-UI-Angular
===================
+[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular)
+[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular#info=devDependencies)
-Status: Currently migrating from https://github.com/caitp/angular-semantic
+Status: **Work in Progress** (migration from https://github.com/caitp/angular-semantic)
| 3 | chore(README): Update README with dependencies badges | 1 | .md | md | mit | Semantic-Org/Semantic-UI-Angular |
10071846 | <NME> README.md
<BEF> Semantic-UI-Angular
===================
Status: Currently migrating from https://github.com/caitp/angular-semantic
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular#info=devDependencies)
[](http://commitizen.github.io/cz-cli/)
**Semantic-UI-Angular** is a pure AngularJS 1.x set of directives for Semantic-UI components.
We are considering Angular 2 support in the future. We've decided to use TypeScript as a step to Angular 2 friendly environment.
Status
------
**Work in progress**
We are working on setting up proper environment, contribution guidelines and everything else for comfortable community contributions.
Once we release first `alpha.0` we are happy to get community help.
Support
-------
We support AngularJS 1.4.8 version.
Building Semantic-UI-Angular
----------------------------
You have to have `nodejs` installed before running following commands.
```
npm install
npm run build
```
The distribution packages will be stored in `dist` folder.
Running tests
-------------
Single run:
```
npm test
```
Dev mode:
```
npm run test-dev
```
<MSG> chore(README): Update README with dependencies badges
<DFF> @@ -1,4 +1,6 @@
Semantic-UI-Angular
===================
+[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular)
+[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular#info=devDependencies)
-Status: Currently migrating from https://github.com/caitp/angular-semantic
+Status: **Work in Progress** (migration from https://github.com/caitp/angular-semantic)
| 3 | chore(README): Update README with dependencies badges | 1 | .md | md | mit | Semantic-Org/Semantic-UI-Angular |
10071847 | <NME> README.md
<BEF> Semantic-UI-Angular
===================
Status: Currently migrating from https://github.com/caitp/angular-semantic
[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular#info=devDependencies)
[](http://commitizen.github.io/cz-cli/)
**Semantic-UI-Angular** is a pure AngularJS 1.x set of directives for Semantic-UI components.
We are considering Angular 2 support in the future. We've decided to use TypeScript as a step to Angular 2 friendly environment.
Status
------
**Work in progress**
We are working on setting up proper environment, contribution guidelines and everything else for comfortable community contributions.
Once we release first `alpha.0` we are happy to get community help.
Support
-------
We support AngularJS 1.4.8 version.
Building Semantic-UI-Angular
----------------------------
You have to have `nodejs` installed before running following commands.
```
npm install
npm run build
```
The distribution packages will be stored in `dist` folder.
Running tests
-------------
Single run:
```
npm test
```
Dev mode:
```
npm run test-dev
```
<MSG> chore(README): Update README with dependencies badges
<DFF> @@ -1,4 +1,6 @@
Semantic-UI-Angular
===================
+[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular)
+[](https://david-dm.org/Semantic-Org/Semantic-UI-Angular#info=devDependencies)
-Status: Currently migrating from https://github.com/caitp/angular-semantic
+Status: **Work in Progress** (migration from https://github.com/caitp/angular-semantic)
| 3 | chore(README): Update README with dependencies badges | 1 | .md | md | mit | Semantic-Org/Semantic-UI-Angular |
10071848 | <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
And our initializer:
```ruby
rails_root = ENV['RAILS_ROOT'] || File.dirname(__FILE__) + '/../..'
rails_env = ENV['RAILS_ENV'] || 'development'
split_config = YAML.load_file(rails_root + '/config/split.yml')
Split.redis = split_config[rails_env]
```
## Namespaces
```
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> Merge pull request #289 from byterussian/update-readme-rails-initializer
Update initializer code with Rails.root and Rails.env
<DFF> @@ -551,11 +551,8 @@ production: redis1.example.com:6379
And our initializer:
```ruby
-rails_root = ENV['RAILS_ROOT'] || File.dirname(__FILE__) + '/../..'
-rails_env = ENV['RAILS_ENV'] || 'development'
-
-split_config = YAML.load_file(rails_root + '/config/split.yml')
-Split.redis = split_config[rails_env]
+split_config = YAML.load_file(Rails.root.join('config', 'split.yml'))
+Split.redis = split_config[Rails.env]
```
## Namespaces
| 2 | Merge pull request #289 from byterussian/update-readme-rails-initializer | 5 | .md | md | mit | splitrb/split |
10071849 | <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
And our initializer:
```ruby
rails_root = ENV['RAILS_ROOT'] || File.dirname(__FILE__) + '/../..'
rails_env = ENV['RAILS_ENV'] || 'development'
split_config = YAML.load_file(rails_root + '/config/split.yml')
Split.redis = split_config[rails_env]
```
## Namespaces
```
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> Merge pull request #289 from byterussian/update-readme-rails-initializer
Update initializer code with Rails.root and Rails.env
<DFF> @@ -551,11 +551,8 @@ production: redis1.example.com:6379
And our initializer:
```ruby
-rails_root = ENV['RAILS_ROOT'] || File.dirname(__FILE__) + '/../..'
-rails_env = ENV['RAILS_ENV'] || 'development'
-
-split_config = YAML.load_file(rails_root + '/config/split.yml')
-Split.redis = split_config[rails_env]
+split_config = YAML.load_file(Rails.root.join('config', 'split.yml'))
+Split.redis = split_config[Rails.env]
```
## Namespaces
| 2 | Merge pull request #289 from byterussian/update-readme-rails-initializer | 5 | .md | md | mit | splitrb/split |
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