[LeifCarrotson]

I have written robot software...curious what context you were in.

I've been doing industrial automation with commercial robot arms, where testing is mostly functional and there's very few system checks. You're basically jogging the robot with the teach pendant, recording points, and reading digital IO. There are minimal system checks, simulation is mostly to make sure the cell CAD layout is reachable and less to verify that things are working correctly. Version control is completely offline, there's not even an "undo" feature to revert a touched up point unless you underwent a tedious and slow backup procedure.

That said, like you, none of my robots cost more than 6 figures, and they're all permanently anchored to terrestrial steel and concrete...