[phoronixrly]

I mean sure, if your test suite does fuzzing, then I guess so. Most test suites focus on higher level stuff like behaviours and entire features these days. This is instead of testing in isolation the technicalities like the signatures of functions and what happens if you pass a null here or there.

[lmm]

The same applies to type systems these days - you don't just express basics like nullable or not, you build high level business concerns into your types.