Attribute Coverage to Hunks, Not Files: An Ownership Map for Agent Patches
This story is from 2026-10-16. It is preserved in the archive; the latest stories are on the live feed.
A patch can show 100% coverage on its changed lines and still be untested. The number that matters is not how many changed lines executed, but which test would fail if the change were wrong — and whether that test was added by the patch or inherited from the repository. This post builds a hunk owne…
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- 2026-10-16 16:36 · DEV Community — AI
Attribute Coverage to Hunks, Not Files: An Ownership Map for Agent Patches