# Test Coverage Checklist

## Backend
- Auth and permission rules.
- Catalog reads and writes.
- Cart behavior.
- Order creation and lifecycle.
- Admin operations.
- Input validation and error responses.
- Critical business logic and edge cases.

## Frontend
- Key page rendering.
- Empty, loading, and error states.
- User interactions for catalog, cart, checkout, auth, and account.
- Admin UI interactions when the repo contains admin code.

## High-priority ecommerce flows
- Add to cart.
- Quantity updates and cart totals.
- Checkout or lead flow.
- Login and protected routes.
- Admin create or edit flows.

## Review quality
- Assertions should verify behavior, not just implementation details.
- Avoid fragile snapshot-heavy suites unless they truly add confidence.