27 lines
1011 B
Markdown
27 lines
1011 B
Markdown
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# `react-test-renderer`
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This package provides an experimental React renderer that can be used to render React components to pure JavaScript objects, without depending on the DOM or a native mobile environment.
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Essentially, this package makes it easy to grab a snapshot of the "DOM tree" rendered by a React DOM or React Native component without using a browser or jsdom.
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Documentation:
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[https://reactjs.org/docs/test-renderer.html](https://reactjs.org/docs/test-renderer.html)
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Usage:
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```jsx
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const ReactTestRenderer = require('react-test-renderer');
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const renderer = ReactTestRenderer.create(
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<Link page="https://www.facebook.com/">Facebook</Link>
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);
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console.log(renderer.toJSON());
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// { type: 'a',
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// props: { href: 'https://www.facebook.com/' },
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// children: [ 'Facebook' ] }
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```
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You can also use Jest's snapshot testing feature to automatically save a copy of the JSON tree to a file and check in your tests that it hasn't changed: https://facebook.github.io/jest/blog/2016/07/27/jest-14.html.
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