Agree with @manton here. I used to be quite religious about Test Driven Development, but I'm less so nowadays. For the simple stuff, it works great; but for anything larger, you know little about how your going to build something until after you build it. Only then should you lock it in with tests.

@lmika That said, I also agree with @danielpunkass that a test suite with a non-zero number of tests is better than a test suite with zero tests.