# Test Coverage

Analyze Vitest coverage and add missing tests:

1. Run `pnpm test` (packages that support coverage: `pnpm --filter <pkg> test -- --coverage` when configured)

2. Identify files below 80%

3. For each under-covered file:

   - Unit tests for validators, transformers, utils, stores
   - Testing Library tests for `@repo/ui` components
   - Journey tests for critical `apps/web` flows (mock data services)

4. Verify new tests pass

5. Show before/after coverage

Focus on:

- Happy path
- Error handling
- Edge cases (null, undefined, empty)
- Zod boundary conditions (`rangeLength`)