Also the most useful and expensive testcases require understanding of the whole project. You need to validate the functionality from end-to-end and also that sy

Also the most useful and expensive testcases require understanding of the whole project. You need to validate the functionality from end-to-end and also that system does not crash for unexpected things and so on. AIs don't have that level understanding as "a whole" yet. For sure, simple unit tests are easy to generate with AI.