I think good code usually results in the test suite being useless the vast majority of the time. That is, only let's say one run in a thousand of any given tes

I think good code usually results in the test suite being useless the vast majority of the time. That is, only let's say one run in a thousand of any given test should fail after adding or refactoring code, if that. Even then, the failures are usually commensurate with the changed expectations of the changed code and not indicative of a bug.