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# Copyright DataStax, Inc.
#
# 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 unittest
from unittest.mock import Mock
from cassandra.cluster import _ConfigMode
from cassandra.cqlengine import connection
from cassandra.query import dict_factory
class ConnectionTest(unittest.TestCase):
no_registered_connection_msg = "doesn't exist in the registry"
def setUp(self):
super(ConnectionTest, self).setUp()
self.assertFalse(
connection._connections,
'Test precondition not met: connections are registered: {cs}'.format(cs=connection._connections)
)
def test_set_session_without_existing_connection(self):
"""
Users can set the default session without having a default connection set.
"""
mock_cluster = Mock(
_config_mode=_ConfigMode.LEGACY,
)
mock_session = Mock(
row_factory=dict_factory,
encoder=Mock(mapping={}),
cluster=mock_cluster,
)
connection.set_session(mock_session)
def test_get_session_fails_without_existing_connection(self):
"""
Users can't get the default session without having a default connection set.
"""
with self.assertRaisesRegex(connection.CQLEngineException, self.no_registered_connection_msg):
connection.get_session(connection=None)
def test_get_cluster_fails_without_existing_connection(self):
"""
Users can't get the default cluster without having a default connection set.
"""
with self.assertRaisesRegex(connection.CQLEngineException, self.no_registered_connection_msg):
connection.get_cluster(connection=None)
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