53 lines
1.9 KiB
Python
53 lines
1.9 KiB
Python
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
||
|
# not use this file except in compliance with the License. You may obtain
|
||
|
# a copy of the License at
|
||
|
#
|
||
|
# http://www.apache.org/licenses/LICENSE-2.0
|
||
|
#
|
||
|
# Unless required by applicable law or agreed to in writing, software
|
||
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||
|
# License for the specific language governing permissions and limitations
|
||
|
# under the License.
|
||
|
|
||
|
import fixtures
|
||
|
|
||
|
|
||
|
class SleepFixture(fixtures.Fixture):
|
||
|
"""A fixture for mocking the ``wait()`` within :doc:`loopingcall` events.
|
||
|
|
||
|
This exists so test cases can exercise code that uses :doc:`loopingcall`
|
||
|
without actually incurring wall clock time for sleeping.
|
||
|
|
||
|
The mock for the ``wait()`` is accessible via the fixture's ``mock_wait``
|
||
|
attribute.
|
||
|
|
||
|
.. note:: It is not recommended to assert specific arguments (i.e. timeout
|
||
|
values) to the mock, as this relies on the internals of
|
||
|
:doc:`loopingcall` not changing.
|
||
|
|
||
|
.. todo:: Figure out a way to make an enforceable contract allowing
|
||
|
verification of timeout values.
|
||
|
|
||
|
Example usage::
|
||
|
|
||
|
from oslo.service import fixture
|
||
|
...
|
||
|
class MyTest(...):
|
||
|
def setUp(self):
|
||
|
...
|
||
|
self.sleepfx = self.useFixture(fixture.SleepFixture())
|
||
|
...
|
||
|
|
||
|
def test_this(self):
|
||
|
...
|
||
|
thing_that_hits_a_loopingcall()
|
||
|
...
|
||
|
self.assertEqual(5, self.sleepfx.mock_wait.call_count)
|
||
|
...
|
||
|
"""
|
||
|
def _setUp(self):
|
||
|
# Provide access to the mock so that calls to it can be asserted
|
||
|
self.mock_wait = self.useFixture(fixtures.MockPatch(
|
||
|
'oslo_utils.eventletutils.EventletEvent.wait')).mock
|