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Mutation Testing as a Merge Gate for Agent-Written Tests

This story is from 2026-08-26. It is preserved in the archive; the latest stories are on the live feed.

An agent patch that passes its own tests is a baseline, not a verdict. The same model wrote the code and the tests, so both share the same blind spots. Mutation testing scores the tests themselves: inject a fault, run the suite, and see whether it notices. In practice, the first mutant often surviv…

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  1. 2026-08-26 18:52 · DEV Community — AI
    Mutation Testing as a Merge Gate for Agent-Written Tests

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