The Complete React Developer Course (with Hooks and Redux) - Snapshot Testing

The video tutorial covers testing React components, focusing on the differences between testing functions and components. It introduces snapshot testing using Jest and React Test Renderer, explaining how to set up test files and use shallow rendering. The tutorial demonstrates creating and updating snapshots to track changes in component output, ensuring that changes are intentional and correct.

What steps are involved in creating a test for the header component?

What command is used to install the React Test Renderer?

What happens when a test case does not match the stored snapshot?

How do you handle changes in the component that affect the snapshot?