Adding Tests to Your Magic.dev Project

Most Magic.dev projects ship with zero tests. This means every change is a gamble — you might fix one thing and break three others without knowing until a user reports it. Tests are automated checks that verify your app works correctly. They run in seconds and catch bugs before your users do.

Magic.dev can generate tests for the code it writes. For large multi-file changes, ensure your test suite has good coverage of the affected areas so tests can catch cases Magic.dev got wrong

For broad Magic.dev changes, run integration tests across the full affected area, not just unit tests for the most changed files. Cross-file changes can break things in unexpected places that only integration tests catch

Unit tests check individual functions in isolation — does this function calculate the right total? Integration tests check that multiple pieces work together — does submitting this form save to the database? End-to-end (E2E) tests simulate a real user — can someone sign up, log in, and complete a purchase? Start with E2E tests for your most critical flows, then add integration tests for your API endpoints.

Set up your tests to run automatically on every code push using GitHub Actions or a similar CI service. This way, you'll know immediately if a change breaks something. A basic CI pipeline runs your tests, checks for TypeScript errors, and builds the project. If any step fails, the push is flagged before it reaches production.