I have been programming for more than 30 years, and most of the time I have managed quite well without test-driven development (TDD). I am not going to be mad at you if you decide to just skip this chapter. You can create Rails applications without tests, and you are not likely to garner any bad karma as a result (at least, I hope not, but you can never be entirely sure with the whole karma thing).
If you should decide to go for TDD, then I can promise you that it is enlightening. The basic idea of TDD is that you write a test for each programming function to check that function. In the pure TDD teaching, ...
