What is the difference between unit testing and snapshot testing?

What is the difference between unit testing and snapshot testing?

Unit testing focuses on testing individual components for correctness, while snapshot testing captures the rendered output of components to ensure it remains consistent over time.

When should I use snapshot testing instead of unit testing?

Use snapshot testing when you want to verify the UI output of components, especially in React applications, where visual changes are important.

Can you give me an example of when to use each type of testing?

Sure! Use unit testing for logic-heavy functions, like calculating a sum, and snapshot testing for a component that renders a user interface.

Are there any downsides to using snapshot testing?

Yes, snapshot tests can become brittle if not maintained properly, leading to false positives when UI changes occur.