A Characterization Suite That Never Caught a Bug Won't Protect Your Refactor
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A characterization suite that never caught a bug will not protect your refactor. It locks behavior only if it fails when behavior changes. You need proof before you trust it. The fastest proof is mutation scoring. Seed a bug. Run the suite. Count the misses. Plan for about 30 minutes on a messy rep…
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- 2026-08-26 15:45 · DEV Community — AI
A Characterization Suite That Never Caught a Bug Won't Protect Your Refactor