Reproduce Before Fix
constraint · v1.0.0 · vendors: any
Every bug fix begins with a failing test that reproduces the bug. If you cannot reproduce, the reproduction recipe is the work product.
Tags: debuggingtdd
Content
Before fixing a bug, reproduce it reliably and capture the reproduction as a failing test. The test stays in the suite after the fix is in. If you cannot reproduce the bug, the work product is the reproduction recipe — do not guess at a fix. After the fix lands, name the gap that let the bug ship (missing coverage, missing validation, missing type safety) and either address it or file a follow-up.Applicable turns: system