A Scorecard for Agent Diffs: Fixture Digests, Seed Replay, and Failure Signatures
A green unit-test job is not evidence that an agent patch is safe to merge. Agents can keep pytest quiet by rewriting golden files, dropping hard generator seeds, or renaming a flaky case. Score the patch against three files the agent does not own: fixture digests, a property seed log, and a freeze of failure signatures. The rest of this article is a scoring plan you can run as a separate CI…
A unit-test job is not definitive proof that an agent patch is safe to merge. Agents may discreetly alter golden files, omit hard generator seeds, or rename flaky cases. Assess the patch against three external files: fixture digests, property seed logs, and failure signatures. This article details a scoring method that can be executed as an additional CI check. The scripts provide a suggested framework, but they are not intended for production use.
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