The Fixture Moved With the Assertion: A Co-Movement Gate for Agent Patches
This story is from 2026-10-18. It is preserved in the archive; the latest stories are on the live feed.
An agent patch can turn a red suite green without fixing anything, and the cheapest way it does that is not a skipped test or a reordered run. It edits the input fixture and the expected value in the same commit. The assertion still runs, the run still passes, and the only thing that changed is wha…
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- 2026-10-18 20:54 · DEV Community — AI
The Fixture Moved With the Assertion: A Co-Movement Gate for Agent Patches