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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from tornado.httputil import (
HTTPHeaders,
HTTPMessageDelegate,
HTTPServerConnectionDelegate,
ResponseStartLine,
)
from tornado.routing import (
HostMatches,
PathMatches,
ReversibleRouter,
Router,
Rule,
RuleRouter,
)
from tornado.testing import AsyncHTTPTestCase
from tornado.web import Application, HTTPError, RequestHandler
from tornado.wsgi import WSGIContainer
import typing # noqa: F401
class BasicRouter(Router):
def find_handler(self, request, **kwargs):
class MessageDelegate(HTTPMessageDelegate):
def __init__(self, connection):
self.connection = connection
def finish(self):
self.connection.write_headers(
ResponseStartLine("HTTP/1.1", 200, "OK"),
HTTPHeaders({"Content-Length": "2"}),
b"OK",
)
self.connection.finish()
return MessageDelegate(request.connection)
class BasicRouterTestCase(AsyncHTTPTestCase):
def get_app(self):
return BasicRouter()
def test_basic_router(self):
response = self.fetch("/any_request")
self.assertEqual(response.body, b"OK")
resources = {} # type: typing.Dict[str, bytes]
class GetResource(RequestHandler):
def get(self, path):
if path not in resources:
raise HTTPError(404)
self.finish(resources[path])
class PostResource(RequestHandler):
def post(self, path):
resources[path] = self.request.body
class HTTPMethodRouter(Router):
def __init__(self, app):
self.app = app
def find_handler(self, request, **kwargs):
handler = GetResource if request.method == "GET" else PostResource
return self.app.get_handler_delegate(request, handler, path_args=[request.path])
class HTTPMethodRouterTestCase(AsyncHTTPTestCase):
def get_app(self):
return HTTPMethodRouter(Application())
def test_http_method_router(self):
response = self.fetch("/post_resource", method="POST", body="data")
self.assertEqual(response.code, 200)
response = self.fetch("/get_resource")
self.assertEqual(response.code, 404)
response = self.fetch("/post_resource")
self.assertEqual(response.code, 200)
self.assertEqual(response.body, b"data")
def _get_named_handler(handler_name):
class Handler(RequestHandler):
def get(self, *args, **kwargs):
if self.application.settings.get("app_name") is not None:
self.write(self.application.settings["app_name"] + ": ")
self.finish(handler_name + ": " + self.reverse_url(handler_name))
return Handler
FirstHandler = _get_named_handler("first_handler")
SecondHandler = _get_named_handler("second_handler")
class CustomRouter(ReversibleRouter):
def __init__(self):
super().__init__()
self.routes = {} # type: typing.Dict[str, typing.Any]
def add_routes(self, routes):
self.routes.update(routes)
def find_handler(self, request, **kwargs):
if request.path in self.routes:
app, handler = self.routes[request.path]
return app.get_handler_delegate(request, handler)
def reverse_url(self, name, *args):
handler_path = "/" + name
return handler_path if handler_path in self.routes else None
class CustomRouterTestCase(AsyncHTTPTestCase):
def get_app(self):
router = CustomRouter()
class CustomApplication(Application):
def reverse_url(self, name, *args):
return router.reverse_url(name, *args)
app1 = CustomApplication(app_name="app1")
app2 = CustomApplication(app_name="app2")
router.add_routes(
{
"/first_handler": (app1, FirstHandler),
"/second_handler": (app2, SecondHandler),
"/first_handler_second_app": (app2, FirstHandler),
}
)
return router
def test_custom_router(self):
response = self.fetch("/first_handler")
self.assertEqual(response.body, b"app1: first_handler: /first_handler")
response = self.fetch("/second_handler")
self.assertEqual(response.body, b"app2: second_handler: /second_handler")
response = self.fetch("/first_handler_second_app")
self.assertEqual(response.body, b"app2: first_handler: /first_handler")
class ConnectionDelegate(HTTPServerConnectionDelegate):
def start_request(self, server_conn, request_conn):
class MessageDelegate(HTTPMessageDelegate):
def __init__(self, connection):
self.connection = connection
def finish(self):
response_body = b"OK"
self.connection.write_headers(
ResponseStartLine("HTTP/1.1", 200, "OK"),
HTTPHeaders({"Content-Length": str(len(response_body))}),
)
self.connection.write(response_body)
self.connection.finish()
return MessageDelegate(request_conn)
class RuleRouterTest(AsyncHTTPTestCase):
def get_app(self):
app = Application()
def request_callable(request):
request.connection.write_headers(
ResponseStartLine("HTTP/1.1", 200, "OK"),
HTTPHeaders({"Content-Length": "2"}),
)
request.connection.write(b"OK")
request.connection.finish()
router = CustomRouter()
router.add_routes(
{"/nested_handler": (app, _get_named_handler("nested_handler"))}
)
app.add_handlers(
".*",
[
(
HostMatches("www.example.com"),
[
(
PathMatches("/first_handler"),
"tornado.test.routing_test.SecondHandler",
{},
"second_handler",
)
],
),
Rule(PathMatches("/.*handler"), router),
Rule(PathMatches("/first_handler"), FirstHandler, name="first_handler"),
Rule(PathMatches("/request_callable"), request_callable),
("/connection_delegate", ConnectionDelegate()),
],
)
return app
def test_rule_based_router(self):
response = self.fetch("/first_handler")
self.assertEqual(response.body, b"first_handler: /first_handler")
response = self.fetch("/first_handler", headers={"Host": "www.example.com"})
self.assertEqual(response.body, b"second_handler: /first_handler")
response = self.fetch("/nested_handler")
self.assertEqual(response.body, b"nested_handler: /nested_handler")
response = self.fetch("/nested_not_found_handler")
self.assertEqual(response.code, 404)
response = self.fetch("/connection_delegate")
self.assertEqual(response.body, b"OK")
response = self.fetch("/request_callable")
self.assertEqual(response.body, b"OK")
response = self.fetch("/404")
self.assertEqual(response.code, 404)
class WSGIContainerTestCase(AsyncHTTPTestCase):
def get_app(self):
wsgi_app = WSGIContainer(self.wsgi_app)
class Handler(RequestHandler):
def get(self, *args, **kwargs):
self.finish(self.reverse_url("tornado"))
return RuleRouter(
[
(
PathMatches("/tornado.*"),
Application([(r"/tornado/test", Handler, {}, "tornado")]),
),
(PathMatches("/wsgi"), wsgi_app),
]
)
def wsgi_app(self, environ, start_response):
start_response("200 OK", [])
return [b"WSGI"]
def test_wsgi_container(self):
response = self.fetch("/tornado/test")
self.assertEqual(response.body, b"/tornado/test")
response = self.fetch("/wsgi")
self.assertEqual(response.body, b"WSGI")
def test_delegate_not_found(self):
response = self.fetch("/404")
self.assertEqual(response.code, 404)
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