84 lines
2.7 KiB
Python
84 lines
2.7 KiB
Python
# Copyright 2012 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import time
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from eventlet import greenthread
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from mox3 import mox
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from oslotest import base as test_base
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from openstack.common import loopingcall
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class LoopingCallTestCase(test_base.BaseTestCase):
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def setUp(self):
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super(LoopingCallTestCase, self).setUp()
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self.num_runs = 0
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def test_return_true(self):
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def _raise_it():
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raise loopingcall.LoopingCallDone(True)
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timer = loopingcall.FixedIntervalLoopingCall(_raise_it)
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self.assertTrue(timer.start(interval=0.5).wait())
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def test_return_false(self):
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def _raise_it():
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raise loopingcall.LoopingCallDone(False)
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timer = loopingcall.FixedIntervalLoopingCall(_raise_it)
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self.assertFalse(timer.start(interval=0.5).wait())
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def _wait_for_zero(self):
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"""Called at an interval until num_runs == 0."""
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if self.num_runs == 0:
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raise loopingcall.LoopingCallDone(False)
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else:
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self.num_runs = self.num_runs - 1
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def test_repeat(self):
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self.num_runs = 2
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timer = loopingcall.FixedIntervalLoopingCall(self._wait_for_zero)
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self.assertFalse(timer.start(interval=0.5).wait())
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def test_interval_adjustment(self):
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"""Ensure the interval is adjusted to account for task duration."""
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self.num_runs = 3
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now = time.time()
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second = 1
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smidgen = 0.01
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m = mox.Mox()
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m.StubOutWithMock(greenthread, 'sleep')
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greenthread.sleep(mox.IsAlmost(0.02))
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greenthread.sleep(mox.IsAlmost(0.0))
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greenthread.sleep(mox.IsAlmost(0.0))
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m.StubOutWithMock(loopingcall, '_ts')
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loopingcall._ts().AndReturn(now)
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loopingcall._ts().AndReturn(now + second - smidgen)
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loopingcall._ts().AndReturn(now)
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loopingcall._ts().AndReturn(now + second + second)
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loopingcall._ts().AndReturn(now)
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loopingcall._ts().AndReturn(now + second + smidgen)
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loopingcall._ts().AndReturn(now)
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m.ReplayAll()
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timer = loopingcall.FixedIntervalLoopingCall(self._wait_for_zero)
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timer.start(interval=1.01).wait()
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m.UnsetStubs()
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m.VerifyAll()
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