I agree with you. In my experience, the value in unit tests is in refactoring. I'd only write them as I refactor [to confirm the functionality matches before/a

I agree with you. In my experience, the value in unit tests is in refactoring. I'd only write them as I refactor [to confirm the functionality matches before/after the refactor]. Most of the modifications we do to common libraries, etc. involve higher level rewrites that would break the unit tests anyway and the only way to confirm things still function is integration tests. :/