On: It's OK Not to Write Unit Tests

[aarongough]

If you're a Ruby developer you should check out Heckle:

http://glu.ttono.us/articles/2006/12/19/tormenting-your-test...

Heckle is a mutation testing framework for Ruby. I don't use it all the time, but my tests are definitely better now that I've tried it and seen what some of the edge cases are...