3d65dba163
As the mock lib is going to be used more actively, there is a need
to improve our boilerplate code in respect to mock.
Changes in this patch include:
* `patchobject` now accepts kwargs and passes them to `mock.patch.object`;
* added `patch` method that uses mock.patch (similar to `patchobject`)
- NOTE: this shadows `testtools.TestCase.patch` method that uses
simple monkey-patching in favor of mock-based patching,
relevant comment added in the code;
* test code changed accordingly where needed.
Change-Id: I779cab63249d5eb1962e9ec388cd31f3df4a4189
129 lines
4.3 KiB
Python
129 lines
4.3 KiB
Python
#
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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 logging
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import os
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import sys
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import time
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import fixtures
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import mox
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from oslo.config import cfg
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from oslotest import mockpatch
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import testscenarios
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import testtools
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from heat.common import messaging
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from heat.engine.clients.os import keystone
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from heat.engine import environment
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from heat.engine import resources
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from heat.engine import scheduler
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from heat.tests import fakes
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from heat.tests import utils
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TEST_DEFAULT_LOGLEVELS = {'migrate': logging.WARN}
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class FakeLogMixin:
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def setup_logging(self):
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# Assign default logs to self.LOG so we can still
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# assert on heat logs.
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self.LOG = self.useFixture(
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fixtures.FakeLogger(level=logging.DEBUG))
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base_list = set([nlog.split('.')[0]
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for nlog in logging.Logger.manager.loggerDict])
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for base in base_list:
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if base in TEST_DEFAULT_LOGLEVELS:
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self.useFixture(fixtures.FakeLogger(
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level=TEST_DEFAULT_LOGLEVELS[base],
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name=base))
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elif base != 'heat':
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self.useFixture(fixtures.FakeLogger(
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name=base))
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class HeatTestCase(testscenarios.WithScenarios,
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testtools.TestCase, FakeLogMixin):
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TIME_STEP = 0.1
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def setUp(self):
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super(HeatTestCase, self).setUp()
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self.m = mox.Mox()
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self.addCleanup(self.m.UnsetStubs)
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self.setup_logging()
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scheduler.ENABLE_SLEEP = False
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self.useFixture(fixtures.MonkeyPatch(
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'heat.common.exception._FATAL_EXCEPTION_FORMAT_ERRORS',
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True))
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def enable_sleep():
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scheduler.ENABLE_SLEEP = True
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self.addCleanup(enable_sleep)
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mod_dir = os.path.dirname(sys.modules[__name__].__file__)
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project_dir = os.path.abspath(os.path.join(mod_dir, '../../'))
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env_dir = os.path.join(project_dir, 'etc', 'heat',
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'environment.d')
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cfg.CONF.set_default('environment_dir', env_dir)
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self.addCleanup(cfg.CONF.reset)
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messaging.setup("fake://", optional=True)
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self.addCleanup(messaging.cleanup)
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tri = resources.global_env().get_resource_info(
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'AWS::RDS::DBInstance',
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registry_type=environment.TemplateResourceInfo)
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if tri is not None:
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cur_path = tri.template_name
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templ_path = os.path.join(project_dir, 'etc', 'heat', 'templates')
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if templ_path not in cur_path:
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tri.template_name = cur_path.replace('/etc/heat/templates',
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templ_path)
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utils.setup_dummy_db()
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self.addCleanup(utils.reset_dummy_db)
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def stub_wallclock(self):
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"""
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Overrides scheduler wallclock to speed up tests expecting timeouts.
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"""
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self._wallclock = time.time()
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def fake_wallclock():
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self._wallclock += self.TIME_STEP
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return self._wallclock
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self.m.StubOutWithMock(scheduler, 'wallclock')
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scheduler.wallclock = fake_wallclock
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def patchobject(self, obj, attr, **kwargs):
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mockfixture = self.useFixture(mockpatch.PatchObject(obj, attr,
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**kwargs))
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return mockfixture.mock
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# NOTE(pshchelo): this overrides the testtools.TestCase.patch method
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# that does simple monkey-patching in favor of mock's patching
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def patch(self, target, **kwargs):
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mockfixture = self.useFixture(mockpatch.Patch(target, **kwargs))
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return mockfixture.mock
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def stub_keystoneclient(self, fake_client=None, **kwargs):
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client = self.patchobject(keystone.KeystoneClientPlugin, "_create")
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fkc = fake_client or fakes.FakeKeystoneClient(**kwargs)
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client.return_value = fkc
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return fkc
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