Actually, the file you identified is the (only) one that's mostly human written. It came from a previous project, I may be able to get rid of it. But generally

Actually, the file you identified is the (only) one that's mostly human written. It came from a previous project, I may be able to get rid of it. But generally, the tests are very useful. My point is that there will be redundancies, and maybe even bugs - and that's fine, because the time needed to fix these would be much less than what it would have taken to write them from scratch.