neutron/neutron/tests/unit/db/test_api.py

46 lines
1.6 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.
from oslo_db import exception as db_exc
import testtools
from neutron.db import api as db_api
from neutron.tests import base
class TestExceptionToRetryContextManager(base.BaseTestCase):
def test_translates_single_exception(self):
with testtools.ExpectedException(db_exc.RetryRequest):
with db_api.exc_to_retry(ValueError):
raise ValueError()
def test_translates_multiple_exception_types(self):
with testtools.ExpectedException(db_exc.RetryRequest):
with db_api.exc_to_retry((ValueError, TypeError)):
raise TypeError()
def test_passes_other_exceptions(self):
with testtools.ExpectedException(ValueError):
with db_api.exc_to_retry(TypeError):
raise ValueError()
def test_inner_exception_preserved_in_retryrequest(self):
try:
exc = ValueError('test')
with db_api.exc_to_retry(ValueError):
raise exc
except db_exc.RetryRequest as e:
self.assertEqual(exc, e.inner_exc)