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Differential Contract Testing for Agent Patches: A 3-Layer Verification Strategy

This story is from 2026-09-01. It is preserved in the archive; the latest stories are on the live feed.

An agent pushes a patch. All unit tests pass. CI shows green. Then production receives an unexpected schema change that silently corrupts a downstream consumer. This pattern isn't an agent failure; it's a test suite failure. Most CI pipelines are built to detect implementation drift, not semantic d…

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  1. 2026-09-01 11:02 · DEV Community — AI
    Differential Contract Testing for Agent Patches: A 3-Layer Verification Strategy

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