84 lines
2.8 KiB
Python
84 lines
2.8 KiB
Python
# Copyright 2013-2016 DataStax, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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try:
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import unittest2 as unittest
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except ImportError:
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import unittest # noqa
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from mock import patch, Mock
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import time
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from tests.unit.io.utils import submit_and_wait_for_completion, TimerCallback
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from tests.unit.io.utils import TimerConnectionTests
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from tests import is_monkey_patched
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try:
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from cassandra.io.libevreactor import LibevConnection
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except ImportError:
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LibevConnection = None # noqa
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@patch('socket.socket')
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@patch('cassandra.io.libevwrapper.IO')
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class LibevTimerTest(unittest.TestCase):
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def setUp(self):
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if is_monkey_patched():
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raise unittest.SkipTest("Can't test libev with monkey patching")
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if LibevConnection is None:
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raise unittest.SkipTest('libev does not appear to be installed correctly')
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LibevConnection.initialize_reactor()
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def make_connection(self):
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c = LibevConnection('1.2.3.4', cql_version='3.0.1')
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c._socket = Mock()
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c._socket.send.side_effect = lambda x: len(x)
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return c
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def test_multi_timer_validation(self, *args):
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"""
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Verify that timer timeouts are honored appropriately
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"""
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c = self.make_connection()
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c.initialize_reactor()
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# Tests timers submitted in order at various timeouts
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submit_and_wait_for_completion(self, c, 0, 100, 1, 100)
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# Tests timers submitted in reverse order at various timeouts
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submit_and_wait_for_completion(self, c, 100, 0, -1, 100)
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# Tests timers submitted in varying order at various timeouts
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submit_and_wait_for_completion(self, c, 0, 100, 1, 100, True)
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def test_timer_cancellation(self, *args):
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"""
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Verify that timer cancellation is honored
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"""
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# Various lists for tracking callback stage
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connection = self.make_connection()
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timeout = .1
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callback = TimerCallback(timeout)
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timer = connection.create_timer(timeout, callback.invoke)
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timer.cancel()
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# Release context allow for timer thread to run.
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time.sleep(.2)
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timer_manager = connection._libevloop._timers
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# Assert that the cancellation was honored
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self.assertFalse(timer_manager._queue)
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self.assertFalse(timer_manager._new_timers)
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self.assertFalse(callback.was_invoked())
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