I use Copilot a lot for writing specs. I've come to prefer that it only writes one or two specs to start. It's a good way for me to quickly review it has the structure correct. When it throws too many at me at once, it can be harder to make broad tweaks.

As for `pytest`, I just have to remind it I'm using pytest. "Write pytests for this" is sufficient to get it to do what I want.