vitest-coverage-governor

name	vitest-coverage-governor
description	Configure and enforce Vitest coverage quality gates for Amy's Echo webapp changes. Use when adding tests, tuning coverage thresholds, fixing flaky coverage regressions, or defining test include/exclude behavior in Vite/Vitest.

Vitest Coverage Governor

Use this skill to keep webapp testing signals trustworthy and enforceable.

1) Choose the right test scope

• Local iteration: run focused file tests first.
• Merge confidence: run full npm test --prefix webapp.
• Coverage gate verification: run npm run test:coverage --prefix webapp.

2) Keep coverage config intentional

• Ensure include/exclude patterns match real source ownership.
• Avoid inflating coverage via irrelevant file exclusions.
• Raise thresholds incrementally with passing evidence.

3) Triage coverage drops

1. Identify which files regressed.
2. Add or improve behavior-level assertions.
3. Re-run focused suite, then full coverage.
4. Document regression root cause and fix.

4) Align with Amy-first reliability

Prefer tests that capture:

• failure-path behavior,
• auth/profile boundary behavior,
• UI states that could falsely claim success.

References

• Official Vitest docs: references/official-vitest-docs.md
• Coverage triage playbook: references/coverage-triage-playbook.md