What are the best practices for testing React 18 applications with Testing Library?

What are the best practices for testing React 18 applications with Testing Library?

Some best practices include using user-event for simulating user interactions, keeping tests focused on behavior, and avoiding implementation details.

Can you explain why using user-event is preferred over fireEvent?

User-event simulates real user interactions more closely, making tests more reliable and reflective of actual usage.

What should I do to ensure my tests are maintainable?

To ensure maintainability, keep tests small and focused, use descriptive names, and avoid duplicating code by creating reusable test utilities.

How can I test asynchronous components effectively?

Use async/await with findBy queries to wait for elements to appear, and ensure you handle promises correctly in your tests.

Are there any common pitfalls to avoid when testing with React Testing Library?

Yes, avoid testing implementation details, ensure your tests are not too coupled to the component structure, and keep an eye on performance.