Ah, I do actually have some "real" unit tests where what I'm testing is not directly exposed to users. So e.g. code to correctly find how many bits of precision

Ah, I do actually have some "real" unit tests where what I'm testing is not directly exposed to users. So e.g. code to correctly find how many bits of precision I need to calculate the decimal output in realistic::Real is tested but users can't ask that so there's no value in documenting it.