115 lines
3.5 KiB
Python
115 lines
3.5 KiB
Python
# Copyright 2015 Intel
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# All Rights Reserved.
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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 inspect
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import mock
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import tooz.coordination
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import tooz.locking
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from cinder import coordination
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from cinder import test
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if hasattr(inspect, 'getfullargspec'):
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getargspec = inspect.getfullargspec
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else:
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getargspec = inspect.getargspec
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class Locked(Exception):
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pass
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class MockToozLock(tooz.locking.Lock):
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active_locks = set()
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def acquire(self, blocking=True):
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if self.name not in self.active_locks:
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self.active_locks.add(self.name)
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return True
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elif not blocking:
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return False
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else:
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raise Locked
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def release(self):
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self.active_locks.remove(self.name)
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@mock.patch('tooz.coordination.get_coordinator')
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class CoordinatorTestCase(test.TestCase):
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MOCK_TOOZ = False
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def test_coordinator_start(self, get_coordinator):
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crd = get_coordinator.return_value
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agent = coordination.Coordinator()
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agent.start()
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self.assertTrue(get_coordinator.called)
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self.assertTrue(crd.start.called)
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def test_coordinator_stop(self, get_coordinator):
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crd = get_coordinator.return_value
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agent = coordination.Coordinator()
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agent.start()
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self.assertIsNotNone(agent.coordinator)
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agent.stop()
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self.assertTrue(crd.stop.called)
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self.assertIsNone(agent.coordinator)
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def test_coordinator_lock(self, get_coordinator):
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crd = get_coordinator.return_value
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crd.get_lock.side_effect = lambda n: MockToozLock(n)
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agent1 = coordination.Coordinator()
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agent1.start()
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agent2 = coordination.Coordinator()
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agent2.start()
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lock_name = 'lock'
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expected_name = lock_name.encode('ascii')
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self.assertNotIn(expected_name, MockToozLock.active_locks)
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with agent1.get_lock(lock_name):
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self.assertIn(expected_name, MockToozLock.active_locks)
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self.assertRaises(Locked, agent1.get_lock(lock_name).acquire)
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self.assertRaises(Locked, agent2.get_lock(lock_name).acquire)
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self.assertNotIn(expected_name, MockToozLock.active_locks)
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def test_coordinator_offline(self, get_coordinator):
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crd = get_coordinator.return_value
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crd.start.side_effect = tooz.coordination.ToozConnectionError('err')
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agent = coordination.Coordinator()
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self.assertRaises(tooz.coordination.ToozError, agent.start)
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self.assertFalse(agent.started)
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@mock.patch.object(coordination.COORDINATOR, 'get_lock')
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class CoordinationTestCase(test.TestCase):
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def test_synchronized(self, get_lock):
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@coordination.synchronized('lock-{f_name}-{foo.val}-{bar[val]}')
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def func(foo, bar):
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pass
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foo = mock.Mock()
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foo.val = 7
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bar = mock.MagicMock()
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bar.__getitem__.return_value = 8
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func(foo, bar)
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get_lock.assert_called_with('lock-func-7-8')
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self.assertEqual(['foo', 'bar'], getargspec(func)[0])
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