fix-tests — Claude Code skill: what it does, how to install

What fix-tests does

The skill reads README.md and the project configuration, finds test and coverage commands, then runs the full suite. It parses the failures, groups them by file, and checks how to run one test file in isolation. Developer agents then inspect each failing file, the project documentation, and the failure cause before making a fix.

Its main rule is to change tests while preserving what they are meant to verify. Assertions, setup, or mocks may be updated; business logic should change only when it is clearly broken. With two or more changed files, or with complex logic in one file, the skill orchestrates agents instead of writing tests itself. A single simple file change can be handled directly. After each pass, it runs the full suite again and returns to the remaining failures. That makes the business-logic boundary worth checking before you accept a fix.