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# Copyright 2010-2011 OpenStack Foundation
# Copyright (c) 2013 Hewlett-Packard Development Company, L.P.
# 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
# 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 logging
import os
import testtools
import fixtures
import mock
from oslo_utils import strutils
class TestCase(testtools.TestCase):
"""Test case base class for all unit tests."""
SENTINEL = object()
def setUp(self):
"""Run before each test method to initialize test environment."""
super(TestCase, self).setUp()
test_timeout = os.environ.get('OS_TEST_TIMEOUT', 0)
test_timeout = int(test_timeout)
except ValueError:
# If timeout value is invalid do not set a timeout.
test_timeout = 0
if test_timeout > 0:
self.useFixture(fixtures.Timeout(test_timeout, gentle=True))
environ_enabled = (lambda var_name:
if environ_enabled('OS_STDOUT_CAPTURE'):
stdout = self.useFixture(fixtures.StringStream('stdout')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stdout', stdout))
if environ_enabled('OS_STDERR_CAPTURE'):
stderr = self.useFixture(fixtures.StringStream('stderr')).stream
self.useFixture(fixtures.MonkeyPatch('sys.stderr', stderr))
if environ_enabled('OS_LOG_CAPTURE'):
log_format = '%(levelname)s [%(name)s] %(message)s'
if environ_enabled('OS_DEBUG'):
level = logging.DEBUG
level = logging.INFO
def _common_cleanup(self):
"""Runs after each test method to tear down test environment."""
# Stop any timers
for x in self.injected:
except AssertionError:
# Delete attributes that don't start with _ so they don't pin
# memory around unnecessarily for the duration of the test
# suite
for key in [k for k in self.__dict__.keys() if k[0] != '_']:
del self.__dict__[key]
def log_level(self, level):
"""Set logging level to the specified value."""
log_root = logging.getLogger(None).logger
def mock_object(self, obj, attr_name, new_attr=SENTINEL, **kwargs):
"""Use python mock to mock an object attribute
Mocks the specified objects attribute with the given value.
Automatically performs 'addCleanup' for the mock.
args = [obj, attr_name]
if new_attr is not self.SENTINEL:
patcher = mock.patch.object(*args, **kwargs)
mocked = patcher.start()
return mocked
def patch(self, path, *args, **kwargs):
"""Use python mock to mock a path with automatic cleanup."""
patcher = mock.patch(path, *args, **kwargs)
result = patcher.start()
return result