I haven't looked at much at the quality of unit tests generated by AI but I would imagine it would suffer from the same general problems as humans. That is that

I haven't looked at much at the quality of unit tests generated by AI but I would imagine it would suffer from the same general problems as humans. That is that most of these unit tests would be bad tests. They would include assumptions about implementation and make changes to the code harder. Yes- black box and end-to-end testing. Better forced by the nature of the black box to test the behavior of the system. It's still possible to test the wrong things (behaviors you don't care about) but that tends to stand out more. Also still difficult to make these tests reliable.