Snapshot testing is a way to make sure that your user interface (UI) doesn’t unexpectedly change. It’s like taking a picture of your component’s output and saving it as a reference.

Concept of Snapshot testing in React:

• Capture a Snapshot: When you create a new component or make changes to an existing one, you take a “snapshot” of how it looks at that moment. This includes the rendered HTML structure.
• Save the Snapshot: The snapshot is saved as a file in your project. It’s like a picture of what your component should look like.
• Check for Changes: Every time you run your tests, React compares the current output of your component with the saved snapshot. If they match, everything is good. But if there’s a difference, it means your component has changed in a way you might not want.
• Review and Update: If the change is intentional, you can update the snapshot to match the new output. If it’s unexpected, you need to figure out what caused the change and decide if it’s a bug or a legitimate update.

Snapshot testing is like taking pictures of your React components to make sure they always look the way you want them to. It helps you spot any unexpected changes in how your app appears. This way, when you make updates or changes, you can easily check if everything still looks as expected without introducing any unintended issues.