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# Copyright 2015 Vladimir Rutsky <vladimir@rutsky.org>
#
# 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.
"""Base classes and utility functions for testing asyncio-powered code.
"""
import unittest
import asyncio
import socket
import functools
import concurrent.futures
@asyncio.coroutine
def create_server(protocol_factory, loop=None, sock=None):
"""Create server listening on random port"""
if sock is None:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind(("127.0.0.1", 0))
sock.listen(10)
if loop is None:
loop = asyncio.get_event_loop()
return (yield from loop.create_server(protocol_factory, sock=sock))
class AioTestBase(unittest.TestCase):
"""Base class for tests that need temporary asyncio event loop"""
def setUp(self):
self.loop = asyncio.new_event_loop()
asyncio.set_event_loop(self.loop)
self.thread_pool_executor = concurrent.futures.ThreadPoolExecutor(4)
def tearDown(self):
self.thread_pool_executor.shutdown()
self.loop.close()
asyncio.set_event_loop(None)
def asynctest(test_method):
"""Decorator for coroutine tests.
To be used with `AioTestBase`-based tests"""
@functools.wraps(test_method)
def wrapper(self):
"""Synchronously run test method in the event loop"""
self.loop.run_until_complete(test_method(self))
return wrapper
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