You didn't actually just say "write tests" though right? What was the actual prompt you used?

I feel like that matters more than the tooling at this point.

I can't really understand letting LLMs decide what to test or not, they seem to completely miss the boat when it comes to testing. Half of them are useless because they duplicate what they test, and the other half doesn't test what they should be testing. So many shortcuts, and LLMs require A LOT of hand-holding when writing tests, more so than other code I'd wager.