Testing Next.js Applications
A production Next.js application should use multiple levels of testing. Unit tests validate isolated business logic. Component tests validate UI behavior. Integration tests validate interactions between modules. End-to-end tests validate complete user workflows.
Do not test framework behavior that you do not own. Instead, test your application's business rules, authorization decisions, rendering outcomes, and important user journeys.
Key Takeaways
- Use different test levels for different risks.
- Prioritize critical business workflows.
- Test behavior rather than implementation details.