It can and does and may choose to do so unprompted. That was one of my "holy shit" moments. Previously I watched it spit out nonsense to get around edge cases and avoid tests and uttered many of the things I read in this thread. Then the new models hit.
Find some code you're proud of. Find someone else's code you admire. Find something that's been stable for 20 years with no bugs reported. Feed it in, ask it to look it over, and prepare to be humbled.
