As someone who has written no more than 3 unit tests his entire professional life, I can tell you untested code is fraught with fear. For things that really ma

As someone who has written no more than 3 unit tests his entire professional life, I can tell you untested code is fraught with fear. For things that really matter, authentication, payment processing and service orchestration, I have resorted to ad-hoc specification; I cheesy pseudo-algebra based on axiomatic semantics, guards and boatloads of die() type assertions :-|