def METHOD_NAME(empty_swagger_spec, response_spec):
    message = 'Monday'
    response = Mock(
        spec=IncomingResponse,
        status_code=200,
        headers={'content-type': APP_MSGPACK},
        raw_bytes=msgpack.dumps(message, use_bin_type=True),
    )
    with patch(
        'bravado_core.response.get_response_spec',
        return_value=response_spec,
    ):
        op = Mock(swagger_spec=empty_swagger_spec)
        assert message == unmarshal_response(response, op)