Agent Skills: Run Tests and Fix Failures

Run Tests and Fix Failures

Run the project's test suite and fix any failing tests.

Steps

1. Detect test command:

   • Check package.json for scripts.test (JS/TS projects)
   • Check for Cargo.toml → cargo test
   • Check for go.mod → go test ./...
   • Check for pyproject.toml or pytest.ini → pytest
   • Check for mix.exs → mix test

2. Detect package manager (for JS/TS):

   • bun.lock → bun run test
   • pnpm-lock.yaml → pnpm run test
   • package-lock.json → npm run test
   • yarn.lock → yarn run test

3. Run the test suite

4. If tests fail:

   • Analyze the failure output
   • Read the failing test file(s)
   • Understand what the test expects
   • Fix the code (not the test) unless the test itself is wrong
   • Re-run tests to verify fix
   • Repeat until all tests pass

5. Report results:

   • Number of tests run
   • What was fixed (if anything)
   • Final pass/fail status

Rules

• Never disable or skip tests to make them pass
• Fix the underlying code, not the test (unless test is clearly wrong)
• If a test seems wrong, ask before modifying it