Lecture 1 - A Bug or Not a Bug -> Quick Intro -> Three Conditions Of A Bug’s Existence -> The Gist Of Testing -> Spec, Spec, Spec -> Software Bugs And Spec Bugs -> Other Sources Of Expected Results
Let’s assume that the error message wasn’t displayed. In this case, we have a classic case of a software bug; i.e., a bug born because of a mismatch between the actual behavior of the software and the expected behavior (which is usually specified in the spec).