def test__session_checkout(self, mock_database):
from google.cloud.spanner_dbapi import Connection
pool = self._make_pool()
mock_database._pool = pool
connection = Connection(INSTANCE, mock_database)
connection._session_checkout()
pool.get.assert_called_once_with()
self.assertEqual(connection._session, pool.get.return_value)
connection._session = "db_session"
connection._session_checkout()
self.assertEqual(connection._session, "db_session")
def test__session_checkout(self):
from google.cloud.spanner_dbapi import Connection
with mock.patch("google.cloud.spanner_v1.database.Database") as mock_database:
mock_database._pool = mock.MagicMock()
mock_database._pool.get = mock.MagicMock(return_value="db_session_pool")
connection = Connection(self.INSTANCE, mock_database)
connection._session_checkout()
mock_database._pool.get.assert_called_once_with()
self.assertEqual(connection._session, "db_session_pool")
connection._session = "db_session"
connection._session_checkout()
self.assertEqual(connection._session, "db_session")
def test_snapshot_checkout(self):
from google.cloud.spanner_dbapi import Connection
connection = Connection(INSTANCE, DATABASE, read_only=True)
connection.autocommit = False
session_checkout = mock.MagicMock(autospec=True)
connection._session_checkout = session_checkout
snapshot = connection.snapshot_checkout()
session_checkout.assert_called_once()
self.assertEqual(snapshot, connection.snapshot_checkout())
connection.commit()
self.assertIsNone(connection._snapshot)
connection.snapshot_checkout()
self.assertIsNotNone(connection._snapshot)
connection.rollback()
self.assertIsNone(connection._snapshot)
connection.autocommit = True
self.assertIsNone(connection.snapshot_checkout())
def test_transaction_checkout(self):
from google.cloud.spanner_dbapi import Connection
connection = Connection(INSTANCE, DATABASE)
mock_checkout = mock.MagicMock(autospec=True)
connection._session_checkout = mock_checkout
connection.transaction_checkout()
mock_checkout.assert_called_once_with()
mock_transaction = mock.MagicMock()
mock_transaction.committed = mock_transaction.rolled_back = False
connection._transaction = mock_transaction
self.assertEqual(connection.transaction_checkout(), mock_transaction)
connection._autocommit = True
self.assertIsNone(connection.transaction_checkout())
