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Lock Down a Legacy Function in 30 Minutes: AI Tests, Mutation Checks, and a Free Server

This story is from 2026-09-02. It is preserved in the archive; the latest stories are on the live feed.

Refactoring a legacy function without an oracle is a guess. Characterization tests are the oracle. But AI-generated tests can be weak. Mutation testing proves they work. Here is a reproducible 30-minute workflow. I used MonkeyCode's free model access and a free server to run everything. Disclosure:…

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  1. 2026-09-02 05:42 · DEV Community — AI
    Lock Down a Legacy Function in 30 Minutes: AI Tests, Mutation Checks, and a Free Server

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