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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 warnings
import fixtures
from sqlalchemy import exc as sqla_exc
class WarningsFixture(fixtures.Fixture):
"""Filters out warnings during test runs."""
def setUp(self):
super().setUp()
# Make deprecation warnings only happen once to avoid spamming
warnings.simplefilter('once', DeprecationWarning)
warnings.filterwarnings(
'error', message='Evaluating non-mapped column expression',
category=sqla_exc.SAWarning)
# Enable deprecation warnings to capture upcoming SQLAlchemy changes
warnings.filterwarnings(
'error',
category=sqla_exc.SADeprecationWarning)
self.addCleanup(warnings.resetwarnings)
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