def METHOD_NAME(self, mock_engine, mock_mm):
    config_file_path = os.path.join(
        TEST_RESOURCE_DIR_PATH, 'forseti_conf_server_composite_root.yaml')
    db_conn_str = ''
    endpoint = ''
    service_config = config.ServiceConfig(config_file_path,
                                          db_conn_str,
                                          endpoint)
    is_success, err_msg = service_config.update_configuration()
    has_err_msg = len(err_msg) > 0
    self.assertTrue(is_success)
    self.assertFalse(has_err_msg)
    inventory_config = service_config.get_inventory_config()
    self.assertTrue(inventory_config.use_composite_root())
    expected_composite_root_resources = 4
    self.assertEqual(expected_composite_root_resources,
                     len(inventory_config.get_composite_root_resources()))