consider scanning the decompiled code for VF errors

[MiniDigger]

// $VF: Couldn't be decompiled

[Machine-Maker]

I mean... a test can be just to make sure the code actually compiles. I suppose there's a small chance the code could still compile even if some parts weren't decompiled properly. I think checks for both would be good.

[MiniDigger]

a void method with a VF error will compile fine