If you are writing 1000 lines of tests to verify 100 lines of code, your code is testing your tests, and not the other way around.

Heh, well, ok, maybe thats a bit high. :-) OTOH, A hundred lines of code can involve an awful lot of behaviour that needs testing, especially in perl, and IME test code tends to be quite chunky anyway. Maybe stating a hard and fast ratio is not so easy, but i believe the point is still sound.