I think what the above returns depends on the language. In java I think there is an actual run time exception for this. The point of the original comment is to show how 100% coverage is easy to achieve but often meaningless.
There is some other more abstract concept related to the classes of input that can possibly be passed to a method. IMHO 100% coverage and "test first" have done more harm than good to the cause of automated testing.
There is some other more abstract concept related to the classes of input that can possibly be passed to a method. IMHO 100% coverage and "test first" have done more harm than good to the cause of automated testing.