How do I perform snapshot testing with Jest and Vue Testing Library?

How do I perform snapshot testing with Jest and Vue Testing Library?

To perform snapshot testing with Jest and Vue Testing Library, you first need to set up your testing environment. Make sure you have both Jest and Vue Testing Library installed.

What are the steps to create a snapshot test?

1. Import the necessary libraries. 2. Render your Vue component using render from Vue Testing Library. 3. Use toMatchSnapshot() to create a snapshot of the rendered output.

Can you show me an example of a snapshot test?

Sure! Here's a simple example:

import { render } from '@testing-library/vue';
import MyComponent from './MyComponent.vue';

test('matches snapshot', () => {
  const { container } = render(MyComponent);
  expect(container).toMatchSnapshot();
});

What should I do if my snapshot test fails?

If your snapshot test fails, it usually means that the output of your component has changed. You can either update the snapshot using jest --updateSnapshot or investigate the changes to ensure they are expected.