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###############################################################################
#
# The MIT License (MIT)
#
# Copyright (c) Tavendo GmbH
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
###############################################################################
from __future__ import absolute_import
import sys
import twisted.internet
from twisted.trial.unittest import TestCase
from mock import Mock
from autobahn.twisted import choosereactor
class ChooseReactorTests(TestCase):
def patch_reactor(self, name, new_reactor):
"""
Patch ``name`` so that Twisted will grab a fake reactor instead of
a real one.
"""
if hasattr(twisted.internet, name):
self.patch(twisted.internet, name, new_reactor)
else:
def _cleanup():
delattr(twisted.internet, name)
setattr(twisted.internet, name, new_reactor)
def patch_modules(self):
"""
Patch ``sys.modules`` so that Twisted believes there is no
installed reactor.
"""
old_modules = dict(sys.modules)
new_modules = dict(sys.modules)
del new_modules["twisted.internet.reactor"]
def _cleanup():
sys.modules = old_modules
self.addCleanup(_cleanup)
sys.modules = new_modules
def test_unknown(self):
"""
``install_optimal_reactor`` will use the default reactor if it is
unable to detect the platform it is running on.
"""
reactor_mock = Mock()
self.patch_reactor("default", reactor_mock)
self.patch(sys, "platform", "unknown")
# Emulate that a reactor has not been installed
self.patch_modules()
choosereactor.install_optimal_reactor()
reactor_mock.install.assert_called_once_with()
def test_mac(self):
"""
``install_optimal_reactor`` will install KQueueReactor on
Darwin (OS X).
"""
reactor_mock = Mock()
self.patch_reactor("kqreactor", reactor_mock)
self.patch(sys, "platform", "darwin")
# Emulate that a reactor has not been installed
self.patch_modules()
choosereactor.install_optimal_reactor()
reactor_mock.install.assert_called_once_with()
def test_linux(self):
"""
``install_optimal_reactor`` will install EPollReactor on Linux.
"""
reactor_mock = Mock()
self.patch_reactor("epollreactor", reactor_mock)
self.patch(sys, "platform", "linux")
# Emulate that a reactor has not been installed
self.patch_modules()
choosereactor.install_optimal_reactor()
reactor_mock.install.assert_called_once_with()
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