Current File : //opt/alt/python35/lib64/python3.5/site-packages/aiohttp/test_utils.py
"""Utilities shared by tests."""
import asyncio
import contextlib
import functools
import gc
import socket
import sys
import unittest
from abc import ABC, abstractmethod
from unittest import mock
from multidict import CIMultiDict
from yarl import URL
import aiohttp
from aiohttp.client import _RequestContextManager, _WSRequestContextManager
from . import ClientSession, hdrs
from .helpers import sentinel
from .http import HttpVersion, RawRequestMessage
from .signals import Signal
from .web import (AppRunner, Request, Server, ServerRunner, TCPSite,
UrlMappingMatchInfo)
def unused_port():
"""Return a port that is unused on the current host."""
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
s.bind(('127.0.0.1', 0))
return s.getsockname()[1]
class BaseTestServer(ABC):
def __init__(self, *, scheme=sentinel, loop=None,
host='127.0.0.1', port=None, skip_url_asserts=False,
**kwargs):
self._loop = loop
self.runner = None
self._root = None
self.host = host
self.port = port
self._closed = False
self.scheme = scheme
self.skip_url_asserts = skip_url_asserts
async def start_server(self, loop=None, **kwargs):
if self.runner:
return
self._loop = loop
self._ssl = kwargs.pop('ssl', None)
self.runner = await self._make_runner(**kwargs)
await self.runner.setup()
if not self.port:
self.port = unused_port()
site = TCPSite(self.runner, host=self.host, port=self.port,
ssl_context=self._ssl)
await site.start()
if self.scheme is sentinel:
if self._ssl:
scheme = 'https'
else:
scheme = 'http'
self.scheme = scheme
self._root = URL('{}://{}:{}'.format(self.scheme,
self.host,
self.port))
@abstractmethod # pragma: no cover
async def _make_runner(self, **kwargs):
pass
def make_url(self, path):
url = URL(path)
if not self.skip_url_asserts:
assert not url.is_absolute()
return self._root.join(url)
else:
return URL(str(self._root) + path)
@property
def started(self):
return self.runner is not None
@property
def closed(self):
return self._closed
@property
def handler(self):
# for backward compatibility
# web.Server instance
return self.runner.server
async def close(self):
"""Close all fixtures created by the test client.
After that point, the TestClient is no longer usable.
This is an idempotent function: running close multiple times
will not have any additional effects.
close is also run when the object is garbage collected, and on
exit when used as a context manager.
"""
if self.started and not self.closed:
await self.runner.cleanup()
self._root = None
self.port = None
self._closed = True
def __enter__(self):
raise TypeError("Use async with instead")
def __exit__(self, exc_type, exc_value, traceback):
# __exit__ should exist in pair with __enter__ but never executed
pass # pragma: no cover
async def __aenter__(self):
await self.start_server(loop=self._loop)
return self
async def __aexit__(self, exc_type, exc_value, traceback):
await self.close()
class TestServer(BaseTestServer):
def __init__(self, app, *,
scheme=sentinel, host='127.0.0.1', port=None, **kwargs):
self.app = app
super().__init__(scheme=scheme, host=host, port=port, **kwargs)
async def _make_runner(self, **kwargs):
return AppRunner(self.app, **kwargs)
class RawTestServer(BaseTestServer):
def __init__(self, handler, *,
scheme=sentinel, host='127.0.0.1', port=None, **kwargs):
self._handler = handler
super().__init__(scheme=scheme, host=host, port=port, **kwargs)
async def _make_runner(self, debug=True, **kwargs):
srv = Server(
self._handler, loop=self._loop, debug=True, **kwargs)
return ServerRunner(srv, debug=debug, **kwargs)
class TestClient:
"""
A test client implementation.
To write functional tests for aiohttp based servers.
"""
def __init__(self, server, *, cookie_jar=None, loop=None, **kwargs):
if not isinstance(server, BaseTestServer):
raise TypeError("server must be web.Application TestServer "
"instance, found type: %r" % type(server))
self._server = server
self._loop = loop
if cookie_jar is None:
cookie_jar = aiohttp.CookieJar(unsafe=True, loop=loop)
self._session = ClientSession(loop=loop,
cookie_jar=cookie_jar,
**kwargs)
self._closed = False
self._responses = []
self._websockets = []
async def start_server(self):
await self._server.start_server(loop=self._loop)
@property
def host(self):
return self._server.host
@property
def port(self):
return self._server.port
@property
def server(self):
return self._server
@property
def session(self):
"""An internal aiohttp.ClientSession.
Unlike the methods on the TestClient, client session requests
do not automatically include the host in the url queried, and
will require an absolute path to the resource.
"""
return self._session
def make_url(self, path):
return self._server.make_url(path)
async def request(self, method, path, *args, **kwargs):
"""Routes a request to tested http server.
The interface is identical to asyncio.ClientSession.request,
except the loop kwarg is overridden by the instance used by the
test server.
"""
resp = await self._session.request(
method, self.make_url(path), *args, **kwargs
)
# save it to close later
self._responses.append(resp)
return resp
def get(self, path, *args, **kwargs):
"""Perform an HTTP GET request."""
return _RequestContextManager(
self.request(hdrs.METH_GET, path, *args, **kwargs)
)
def post(self, path, *args, **kwargs):
"""Perform an HTTP POST request."""
return _RequestContextManager(
self.request(hdrs.METH_POST, path, *args, **kwargs)
)
def options(self, path, *args, **kwargs):
"""Perform an HTTP OPTIONS request."""
return _RequestContextManager(
self.request(hdrs.METH_OPTIONS, path, *args, **kwargs)
)
def head(self, path, *args, **kwargs):
"""Perform an HTTP HEAD request."""
return _RequestContextManager(
self.request(hdrs.METH_HEAD, path, *args, **kwargs)
)
def put(self, path, *args, **kwargs):
"""Perform an HTTP PUT request."""
return _RequestContextManager(
self.request(hdrs.METH_PUT, path, *args, **kwargs)
)
def patch(self, path, *args, **kwargs):
"""Perform an HTTP PATCH request."""
return _RequestContextManager(
self.request(hdrs.METH_PATCH, path, *args, **kwargs)
)
def delete(self, path, *args, **kwargs):
"""Perform an HTTP PATCH request."""
return _RequestContextManager(
self.request(hdrs.METH_DELETE, path, *args, **kwargs)
)
def ws_connect(self, path, *args, **kwargs):
"""Initiate websocket connection.
The api corresponds to aiohttp.ClientSession.ws_connect.
"""
return _WSRequestContextManager(
self._ws_connect(path, *args, **kwargs)
)
async def _ws_connect(self, path, *args, **kwargs):
ws = await self._session.ws_connect(
self.make_url(path), *args, **kwargs)
self._websockets.append(ws)
return ws
async def close(self):
"""Close all fixtures created by the test client.
After that point, the TestClient is no longer usable.
This is an idempotent function: running close multiple times
will not have any additional effects.
close is also run on exit when used as a(n) (asynchronous)
context manager.
"""
if not self._closed:
for resp in self._responses:
resp.close()
for ws in self._websockets:
await ws.close()
await self._session.close()
await self._server.close()
self._closed = True
def __enter__(self):
raise TypeError("Use async with instead")
def __exit__(self, exc_type, exc_value, traceback):
# __exit__ should exist in pair with __enter__ but never executed
pass # pragma: no cover
async def __aenter__(self):
await self.start_server()
return self
async def __aexit__(self, exc_type, exc_value, traceback):
await self.close()
class AioHTTPTestCase(unittest.TestCase):
"""A base class to allow for unittest web applications using
aiohttp.
Provides the following:
* self.client (aiohttp.test_utils.TestClient): an aiohttp test client.
* self.loop (asyncio.BaseEventLoop): the event loop in which the
application and server are running.
* self.app (aiohttp.web.Application): the application returned by
self.get_application()
Note that the TestClient's methods are asynchronous: you have to
execute function on the test client using asynchronous methods.
"""
async def get_application(self):
"""
This method should be overridden
to return the aiohttp.web.Application
object to test.
"""
return self.get_app()
def get_app(self):
"""Obsolete method used to constructing web application.
Use .get_application() coroutine instead
"""
raise RuntimeError("Did you forget to define get_application()?")
def setUp(self):
self.loop = setup_test_loop()
self.app = self.loop.run_until_complete(self.get_application())
self.server = self.loop.run_until_complete(self.get_server(self.app))
self.client = self.loop.run_until_complete(
self.get_client(self.server))
self.loop.run_until_complete(self.client.start_server())
self.loop.run_until_complete(self.setUpAsync())
async def setUpAsync(self):
pass
def tearDown(self):
self.loop.run_until_complete(self.tearDownAsync())
self.loop.run_until_complete(self.client.close())
teardown_test_loop(self.loop)
async def tearDownAsync(self):
pass
async def get_server(self, app):
"""Return a TestServer instance."""
return TestServer(app, loop=self.loop)
async def get_client(self, server):
"""Return a TestClient instance."""
return TestClient(server, loop=self.loop)
def unittest_run_loop(func, *args, **kwargs):
"""A decorator dedicated to use with asynchronous methods of an
AioHTTPTestCase.
Handles executing an asynchronous function, using
the self.loop of the AioHTTPTestCase.
"""
@functools.wraps(func, *args, **kwargs)
def new_func(self, *inner_args, **inner_kwargs):
return self.loop.run_until_complete(
func(self, *inner_args, **inner_kwargs))
return new_func
@contextlib.contextmanager
def loop_context(loop_factory=asyncio.new_event_loop, fast=False):
"""A contextmanager that creates an event_loop, for test purposes.
Handles the creation and cleanup of a test loop.
"""
loop = setup_test_loop(loop_factory)
yield loop
teardown_test_loop(loop, fast=fast)
def setup_test_loop(loop_factory=asyncio.new_event_loop):
"""Create and return an asyncio.BaseEventLoop
instance.
The caller should also call teardown_test_loop,
once they are done with the loop.
"""
loop = loop_factory()
asyncio.set_event_loop(None)
if sys.platform != "win32":
policy = asyncio.get_event_loop_policy()
watcher = asyncio.SafeChildWatcher()
watcher.attach_loop(loop)
with contextlib.suppress(NotImplementedError):
policy.set_child_watcher(watcher)
return loop
def teardown_test_loop(loop, fast=False):
"""Teardown and cleanup an event_loop created
by setup_test_loop.
"""
closed = loop.is_closed()
if not closed:
loop.call_soon(loop.stop)
loop.run_forever()
loop.close()
if not fast:
gc.collect()
asyncio.set_event_loop(None)
def _create_app_mock():
app = mock.Mock()
app._debug = False
app.on_response_prepare = Signal(app)
app.on_response_prepare.freeze()
return app
def _create_transport(sslcontext=None):
transport = mock.Mock()
def get_extra_info(key):
if key == 'sslcontext':
return sslcontext
else:
return None
transport.get_extra_info.side_effect = get_extra_info
return transport
def make_mocked_request(method, path, headers=None, *,
match_info=sentinel,
version=HttpVersion(1, 1), closing=False,
app=None,
writer=sentinel,
payload_writer=sentinel,
protocol=sentinel,
transport=sentinel,
payload=sentinel,
sslcontext=None,
client_max_size=1024**2,
loop=...):
"""Creates mocked web.Request testing purposes.
Useful in unit tests, when spinning full web server is overkill or
specific conditions and errors are hard to trigger.
"""
task = mock.Mock()
if loop is ...:
loop = mock.Mock()
loop.create_future.return_value = ()
if version < HttpVersion(1, 1):
closing = True
if headers:
headers = CIMultiDict(headers)
raw_hdrs = tuple(
(k.encode('utf-8'), v.encode('utf-8')) for k, v in headers.items())
else:
headers = CIMultiDict()
raw_hdrs = ()
chunked = 'chunked' in headers.get(hdrs.TRANSFER_ENCODING, '').lower()
message = RawRequestMessage(
method, path, version, headers,
raw_hdrs, closing, False, False, chunked, URL(path))
if app is None:
app = _create_app_mock()
if protocol is sentinel:
protocol = mock.Mock()
if transport is sentinel:
transport = _create_transport(sslcontext)
if writer is sentinel:
writer = mock.Mock()
writer.transport = transport
if payload_writer is sentinel:
payload_writer = mock.Mock()
payload_writer.write = make_mocked_coro(None)
payload_writer.write_eof = make_mocked_coro(None)
payload_writer.drain = make_mocked_coro(None)
protocol.transport = transport
protocol.writer = writer
if payload is sentinel:
payload = mock.Mock()
req = Request(message, payload,
protocol, payload_writer, task, loop,
client_max_size=client_max_size)
match_info = UrlMappingMatchInfo(
{} if match_info is sentinel else match_info, mock.Mock())
match_info.add_app(app)
req._match_info = match_info
return req
def make_mocked_coro(return_value=sentinel, raise_exception=sentinel):
"""Creates a coroutine mock."""
@asyncio.coroutine
def mock_coro(*args, **kwargs):
if raise_exception is not sentinel:
raise raise_exception
return return_value
return mock.Mock(wraps=mock_coro)
Mini Shell