79 lines
3.1 KiB
Python
79 lines
3.1 KiB
Python
# Copyright (c) 2014 OpenStack Foundation.
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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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from unittest import mock
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import eventlet
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from neutron.common import utils
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from neutron.notifiers import batch_notifier
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from neutron.tests import base
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class TestBatchNotifier(base.BaseTestCase):
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def setUp(self):
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super(TestBatchNotifier, self).setUp()
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self._received_events = eventlet.Queue()
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self.notifier = batch_notifier.BatchNotifier(2, self._queue_events)
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self.spawn_n_p = mock.patch.object(eventlet, 'spawn_n')
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def _queue_events(self, events):
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for event in events:
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self._received_events.put(event)
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def test_queue_event_no_event(self):
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spawn_n = self.spawn_n_p.start()
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self.notifier.queue_event(None)
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self.assertEqual(0, len(self.notifier._pending_events.queue))
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self.assertEqual(0, spawn_n.call_count)
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def test_queue_event_first_event(self):
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spawn_n = self.spawn_n_p.start()
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self.notifier.queue_event(mock.Mock())
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self.assertEqual(1, len(self.notifier._pending_events.queue))
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self.assertEqual(1, spawn_n.call_count)
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def test_queue_event_multiple_events_notify_method(self):
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def _batch_notifier_dequeue():
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while not self.notifier._pending_events.empty():
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self.notifier._pending_events.get()
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c_mock = mock.patch.object(self.notifier, '_notify',
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side_effect=_batch_notifier_dequeue).start()
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events = 20
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for i in range(events):
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self.notifier.queue_event('Event %s' % i)
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eventlet.sleep(0) # yield to let coro execute
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utils.wait_until_true(self.notifier._pending_events.empty,
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timeout=5)
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# Called twice: when the first thread calls "synced_send" and then,
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# in the same loop, when self._pending_events is not empty(). All
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# self.notifier.queue_event calls are done in just one
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# "batch_interval" (2 secs).
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self.assertEqual(2, c_mock.call_count)
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def test_queue_event_multiple_events_callback_method(self):
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events = 20
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for i in range(events):
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self.notifier.queue_event('Event %s' % i)
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eventlet.sleep(0) # yield to let coro execute
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utils.wait_until_true(self.notifier._pending_events.empty,
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timeout=5)
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expected = ['Event %s' % i for i in range(events)]
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# Check the events have been handled in the same input order.
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self.assertEqual(expected, list(self._received_events.queue))
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