Being a huge testing advocatem I agree with this post ...for the most part (and it's easy enough to disagree with if you didn't read it all the way). There are

Being a huge testing advocatem I agree with this post ...for the most part (and it's easy enough to disagree with if you didn't read it all the way). There are just certain parts of code that are just more trouble than they're worth to test. However, I'm surprised at just how small an amount of code that really is. In fact, it's really difficult to say what those portions of code are unless you stick to TDD. Another thing that I've noticed is that not only do functional languages lead to a more testable design, but testable code tends to be more functional in nature. So perhaps tests are design tools. Plus, while unit tests really only catch a small number of bugs (I think studies have shown something like 25%), they're the fastest way of catching and preventing the bugs they prevent. Words can't describe how frustrated I get when I deploy to the test server and get an error because I mistyped a variable name in some obscure part of my code. Some times I think programming in a dynamic language without unit tests is like screwing without a condom. Sure it feels good for a while, but eventually it will come back to bite you (no pun intended).