The Test That Could Not Fail

Automated excerpt

I shipped a safety feature that passed every test I had and could never have fired in production. The feature The system takes one position per day. The part where nothing happened Two days later I ran what I call a dose test. A test proves nothing unless you've seen it fail. Set the threshold absurdly tight and the feature must trigger.

Selected automatically from source text; not independently written or fact-checked. Read the original for full context.