[moomin]

My biggest observation with AAA games is that the coding is actually a fairly small part of the work. Most of it is one huge asset pipeline. And I don't think we have particularly good tech for testing what "looks right". Maybe computer vision will get that good eventually, but it's not even a thing right now. The same applies to the gross properties of renderers.

Even in big-spec-up-front triple-A games, there's a lot of exploratory work where you honestly don't know what you want. BDD and TDD don't help there either, rapid prototyping does. (TDD presupposes you know what you want, BDD presupposes someone does and you need to find and talk to them.)

None of which is to say that there aren't many places where test friendly design and regression tests wouldn't help. But the surface isn't the same as the average business app.