You know, I almost forgot to include this chapter. It was as easy to forget to write about testing the programs I write as it is to overlook testing the programs themselves.
Why is that?
I wish I had a definitive answer. In some ways it is like documentation. Once the program seems to work, we just want to get on with doing whatever task caused us to write the program in the first place.
There is always one more bug.
—Lubarskyʼs Law of Cybernetic Entomology
Lubarsky – whoever he might be – is correct. We can never find all of the bugs in our code. For every one I find there ...
