That’s actually a benefit of TDD imo. One of the most difficult things about software development is specifying how it should work. Once you have that the rest

That’s actually a benefit of TDD imo. One of the most difficult things about software development is specifying how it should work. Once you have that the rest is pretty easy. So if you go to write a test case and don’t know what it should do that that’s an early sign you need more time on the spec.