3 ms·

But how do you know you have sufficiently full tests which assess program correctness, to paraphrase the parent?

• rexpop 9y ago
  That is a skill requiring study and practice. I call it "being a good programmer."
• jononor 9y ago
  Property-based testing, preferably with with heavy use of design-by-contracts style pre/post/invariants checking. Ideally also mutation testing.