67 lines
2.2 KiB
Python
67 lines
2.2 KiB
Python
# fixtures: Fixtures with cleanups for testing and convenience.
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#
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# Copyright (C) 2011, Martin Pool <mbp@sourcefrog.net>
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#
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# Licensed under either the Apache License, Version 2.0 or the BSD 3-clause
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# license at the users choice. A copy of both licenses are available in the
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# project source as Apache-2.0 and BSD. You may not use this file except in
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# compliance with one of these two licences.
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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 these licenses is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# license you chose for the specific language governing permissions and
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# limitations under that license.
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import signal
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import time
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import testtools
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from testtools.testcase import (
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TestSkipped,
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)
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import fixtures
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def sample_timeout_passes():
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with fixtures.Timeout(100, gentle=True):
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pass # Timeout shouldn't fire
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def sample_long_delay_with_gentle_timeout():
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with fixtures.Timeout(1, gentle=True):
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time.sleep(100) # Expected to be killed here.
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def sample_long_delay_with_harsh_timeout():
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with fixtures.Timeout(1, gentle=False):
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time.sleep(100) # Expected to be killed here.
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class TestTimeout(testtools.TestCase, fixtures.TestWithFixtures):
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def requireUnix(self):
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if getattr(signal, 'alarm', None) is None:
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raise TestSkipped("no alarm() function")
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def test_timeout_passes(self):
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# This can pass even on Windows - the test is skipped.
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sample_timeout_passes()
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def test_timeout_gentle(self):
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self.requireUnix()
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self.assertRaises(
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fixtures.TimeoutException,
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sample_long_delay_with_gentle_timeout)
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def test_timeout_harsh(self):
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self.requireUnix()
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# This will normally kill the whole process, which would be
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# inconvenient. Let's hook the alarm here so we can observe it.
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self.got_alarm = False
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def sigalrm_handler(signum, frame):
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self.got_alarm = True
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old_handler = signal.signal(signal.SIGALRM, sigalrm_handler)
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self.addCleanup(signal.signal, signal.SIGALRM, old_handler)
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sample_long_delay_with_harsh_timeout()
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self.assertTrue(self.got_alarm)
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