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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 mock
from oslo_db.sqlalchemy import provision
from oslo_db.sqlalchemy import test_base
from oslotest import base as oslo_test_base
class BackendSkipTest(oslo_test_base.BaseTestCase):
def test_skip_no_dbapi(self):
class FakeDatabaseOpportunisticFixture(test_base.DbFixture):
DRIVER = 'postgresql'
class SomeTest(test_base.DbTestCase):
FIXTURE = FakeDatabaseOpportunisticFixture
def runTest(self):
pass
st = SomeTest()
# patch in replacement lookup dictionaries to avoid
# leaking from/to other tests
with mock.patch(
"oslo_db.sqlalchemy.provision."
"Backend.backends_by_database_type", {
"postgresql":
provision.Backend("postgresql", "postgresql://")}):
st._database_resources = {}
st._db_not_available = {}
st._schema_resources = {}
with mock.patch(
"sqlalchemy.create_engine",
mock.Mock(side_effect=ImportError())):
self.assertEqual([], st.resources)
ex = self.assertRaises(
self.skipException,
st.setUp
)
self.assertEqual(
"Backend 'postgresql' is unavailable: No DBAPI installed",
str(ex)
)
def test_skip_no_such_backend(self):
class FakeDatabaseOpportunisticFixture(test_base.DbFixture):
DRIVER = 'postgresql+nosuchdbapi'
class SomeTest(test_base.DbTestCase):
FIXTURE = FakeDatabaseOpportunisticFixture
def runTest(self):
pass
st = SomeTest()
ex = self.assertRaises(
self.skipException,
st.setUp
)
self.assertEqual(
"Backend 'postgresql+nosuchdbapi' is unavailable: No such backend",
str(ex)
)
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