# Testing

## Layers

- **Unit** (`tsx --test`): `app/shared/*` — formula, derived, creation, snapshot, system validate
- **Integration**: SQLite store (builder), GameSystemsStore (player)
- **E2E** (Playwright Electron): functional asserts — not smoke-only (see plan)

## Commands

```bash
# builder
npm test
npm run test:e2e   # when e2e suite is added

# player (meta_builder)
npx tsx --test app/main/gameSystems/gameSystemsStore.test.ts
npx tsx --test app/shared/characterSheet/core.test.ts
```

## Preset smoke

```bash
node scripts/preset-smoke.mjs
```

Validates every `presets/*.json` (except samples) via `validateSystemDefinition` + sample derived compute.