e.g, I change velocity of player to '200' and of bullets to '300', and it only updated the bullet velocity. Then told me the player was already 'at the correct value' even though it was set to 150. Things like that.. :)
If you mean 'passes tests', that can be tackled by AI. Although AI writing its own tests and then implementing its own code is definitely not a foolproof strategy.
How do you manage/orchestrate this? I'm genuinely curious.