> Also my personal style is to do shit ton of refactoring. This means I usually start with something that only vaguely resembles the end result. I spend a lot o

> Also my personal style is to do shit ton of refactoring. This means I usually start with something that only vaguely resembles the end result. I spend a lot of time moving stuff around until I get rid of everything that I don't like. Same here. I do think there's value in some unit testing: mostly for small units whose behavior is a bit tricky to verify by just looking at the code or running the application. These are usually functions with tricky mathematical expressions, or something like that.