# Testing

All tests must run inside Docker containers.

## Canonical Test Command

Run these commands from the repository root:

```bash
docker compose run --rm backend ruff check .
docker compose run --rm backend pytest
docker compose run --rm frontend npm test
docker compose config
```

## Test categories

- Backend API tests use `pytest` and `pytest-django`.
- Backend linting uses `ruff`.
- Frontend unit tests use `vitest`.
- Docker Compose validation uses `docker compose config`.

The initial TDD coverage verifies authentication requirements, player filtering, default ranking, profile performance summaries, user roles, and frontend filter serialization.