snapshot testing react code example

Example 1: jest update snapshot

jest --updateSnapshot
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Example 2: update snapshot jest

npx jest --u

Example 3: snapshot testing

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

it('renders correctly', () => {
  const tree = renderer
    .create(Facebook)
    .toJSON();
  expect(tree).toMatchSnapshot();
});

Example 4: snapshot testing

exports[`renders correctly 1`] = `

  Facebook

`;