Brueckner puts green tests on trial, including the limits of his own remedy

Verdict

Siegfried Brueckner makes “Exit-Code 0” the incriminating detail: scripts swallowed runtime errors and still reported success, explaining exactly how a quality gate becomes decoration. His rule, “Ich glaube keinem Testlauf mehr, den ich nicht mindestens einmal habe kontrolliert scheitern sehen,” demands demonstrated failure detection rather than another reassuring test count—a harder standard to satisfy. He also subjects his remedy to that standard: “Kostete zwei volle Arbeitstage” leads not to a mutation-testing victory lap, but to the admission that source inspection found the worst weakness. That keeps the account from becoming a tool pitch. And “gegenseitiges Schulterklopfen zweier Modelle” gives the technical problem a precise comic image: two models congratulating each other, with correctness conspicuously absent from the ceremony.