They taught me unit testing at university and I've been using it ever since. It has a lot of benefits. But things like decoupling, orthogonality and naming conv

They taught me unit testing at university and I've been using it ever since. It has a lot of benefits. But things like decoupling, orthogonality and naming conventions are worth thinking hard about in their own right, not just in terms of the side effects of TDD. Contrary to popular belief, it's entirely possible to create an unmaintainable mess that breaks regularly and is impossible to extend with near-100% test coverage.