Update snapshot jest

npx jest --u

Jest update snapshot

jest --updateSnapshot
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Source: jestjs.io

Snapshot testing

import React from 'react';
import Link from '../Link.react';
import renderer from 'react-test-renderer';

it('renders correctly', () => {
  const tree = renderer
    .create(<Link page="http://www.facebook.com">Facebook</Link>)
    .toJSON();
  expect(tree).toMatchSnapshot();
});

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