OpenStack Identity (Keystone)
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keystone/keystone/tests/unit/ksfixtures/cache.py

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# 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
from keystone import catalog
from keystone.common import cache
from keystone import revoke
CACHE_REGIONS = (cache.CACHE_REGION, catalog.COMPUTED_CATALOG_REGION,
revoke.REVOKE_REGION)
class Cache(fixtures.Fixture):
"""A fixture for setting up the cache between test cases.
This will also tear down an existing cache if one is already configured.
"""
def setUp(self):
super(Cache, self).setUp()
# NOTE(dstanek): We must remove the existing cache backend in the
# setUp instead of the tearDown because it defaults to a no-op cache
# and we want the configure call below to create the correct backend.
# NOTE(morganfainberg): The only way to reconfigure the CacheRegion
# object on each setUp() call is to remove the .backend property.
for region in CACHE_REGIONS:
if region.is_configured:
del region.backend
# ensure the cache region instance is setup
cache.configure_cache(region=region)