Backend developer in Copenhagenhttps://www.marouan.dk/https://www.marouan.dk/writing/hard-to-vary-tests/https://www.marouan.dk/writing/hard-to-vary-tests/A practical test quality lens adapted from David Deutsch: judge whether a test is strict about the rule, or merely strict about incidental details.Sun, 26 Apr 2026 00:00:00 GMT