For the console tests, I prefer to run new/modified tests on all VM configurations so I can quickly see which behaviour or return codes are commonly correct. In some cases, this lets me determine in which version some expected behaviour changed.
This all started with the font family registry value MR. I wanted to check the value name on XP, since I thought it was correct but couldn’t be certain. That’s when I discovered the tests weren’t running and decided to see how much effort it would take to fix them.
I know the value of these patches isn’t worth much, but I still find them useful.