def test_serializerPassedInBind(self):
        serializer = object()
        msg = Message({}, serializer)
        msg2 = msg.bind(x=1)
        self.assertIs(msg2._serializer, serializer)
The L{Message} returned by L{Message.bind} includes the serializer
dataset/ETHPy150Open ClusterHQ/eliot/eliot/tests/test_message.py/MessageTests.test_serializerPassedInBind