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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.
"""Test the compatibility layer for the engine_connect() event.
This event is added as of SQLAlchemy 0.9.0; oslo.db provides a compatibility
layer for prior SQLAlchemy versions.
"""
import mock
from oslotest import base as test_base
import sqlalchemy as sqla
from oslo.db.sqlalchemy.compat import engine_connect
class EngineConnectTest(test_base.BaseTestCase):
def setUp(self):
super(EngineConnectTest, self).setUp()
self.engine = engine = sqla.create_engine("sqlite://")
self.addCleanup(engine.dispose)
def test_connect_event(self):
engine = self.engine
listener = mock.Mock()
engine_connect(engine, listener)
conn = engine.connect()
self.assertEqual(
listener.mock_calls,
[mock.call(conn, False)]
)
conn.close()
conn2 = engine.connect()
conn2.close()
self.assertEqual(
listener.mock_calls,
[mock.call(conn, False), mock.call(conn2, False)]
)
def test_branch(self):
engine = self.engine
listener = mock.Mock()
engine_connect(engine, listener)
conn = engine.connect()
branched = conn.connect()
conn.close()
self.assertEqual(
listener.mock_calls,
[mock.call(conn, False), mock.call(branched, True)]
)
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