Thoughts of unit test

After experiencing hours of back-and-forth discussion and negotiations, I finally found a solution to fit the need of both side on a side project. It could be much easier if we have done the unit test. So, what is unit test?  A unit test is a test that examinate the function with higher coverage than simply making sure it runs. In other word, barely functional is not enough. Passing a unit test after construction is not only important but necessary, especially when you had signed a contract with others. By the way, after this we usually (actually I can’t even think of on that doesn’t) do integration test, and that, another story, can be touched on next time.