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Yes, I was the bit of a shock the first time I realized how misleading coverage was. Being executed doesn't mean tested. Tested doesn't mean it works. Working d

Yes, I was the bit of a shock the first time I realized how misleading coverage was. Being executed doesn't mean tested. Tested doesn't mean it works. Working doesn't mean it does what you want. Doing what you want doesn't mean it will do what the client wants. Doing what's the client want now doens't mean it will do keep doing it in the future. But anybody who edited a 100 000 lines long project, ran the unit test, and saw red lines, fixed them, ran it again and then saw green now the feeling : it's great. You are way more confident.

madgar 10y ago
> But anybody who edited a 100 000 lines long project, ran the unit test, and saw red lines, fixed them, ran it again and then saw green now the feeling : it's great. You are way more confident. This is the key insight: unit tests are about feelings more than anything else. People get so defensive in unit testing threads because eliminating unit tests means eliminating their source of confidence.