def init(self):
'''This method is invoked before each test case run in order to set common dependencies.'''
self._model_facade = Mock()
self._model_facade_cls = Mock(return_value=self._model_facade)
self._db_conn = Mock()
self._conn_manager = Mock()
self._conn_manager.get_connection = Mock(return_value=self._db_conn)
self._validator = PersonValidator(
model_facade_cls=self._model_facade_cls,
conn_manager=self._conn_manager)
