def test_register_no_msgtype(self):
        topic = "/test_register_no_msgtype"
        client = "client_test_register_no_msgtype"

        self.assertFalse(manager._publishers in topic)
        self.assertFalse(self.is_topic_published(topic))
        self.assertRaises(TopicNotEstablishedException, manager.register, client, topic)
dataset/ETHPy150Open RobotWebTools/rosbridge_suite/rosbridge_library/test/internal/publishers/test_publisher_manager.py/TestPublisherManager.test_register_no_msgtype/swapped operands of `in`