Tests

The test tree is organized with a clear backend/frontend split:

tests/backend
- backend unit tests, integration tests, and contract tests
- driven by pytest
- regression tests directly related to py-src/data_formulator/**
tests/frontend
- frontend unit tests powered by Vitest + @testing-library/react (jsdom)
- covers pure functions, Redux selectors, and React component rendering
- see tests/frontend/README.md for directory layout details

Suggested Commands

Run backend tests (pytest):

pytest tests/backend

Run frontend tests (Vitest):

npm test

Run frontend tests in watch mode:

npm run test:watch