Unit testing should always be on your mind while you’re coding. Some people prefer to write the unit tests before the code that’s being tested. However I prefer to write mine afterwards. It’s a personal preference and each to their own. But which ever way you feel, unit tests are good. Unit tests are your sanity check, and a direct link to the reason you’re writing the code. If you have no unit test for a particular piece of code, ask yourself if that piece of code is necessary. If not, discard it. If it is necessary, then why haven’t you written a unit test for it? Hmmm? Go write one now then, before you forget about it…
