I'd be impressed if AI wrote a test suite that immediately found a bunch of valid bugs. I'd be nonplussed if it wrote a test suite that "passed" on the first try. The presence of passing tests does not imply an absence of bugs, and the hard part of developing a test suite is the test design, not the implementation.
lol, fair enough, but I would never commit a line of code I hadn't carefully read myself. my new class was basic, so the new unit test was basic as well, but it was thorough and correct. And I exaggerated a bit; I did write 3 or 4 comments to give the ai some idea of where I was heading.