Compared to traditional testing methods like Junit and Jmock, "testing based on sequence diagram" can be more efficiently applied to test the interaction traces between system under test (SUT) and the environment running the SUT. Mock objects come out in order to set up the compatible test environment. Besides that, through the tailor-made mock objects in this project - LiMock, the interaction of different objects within System under test (SUT) becomes possible to be detected to some extent. Although this kind of specific testing method is not considered mature, it would be popular...