shallow-renderer-example.js

import ShallowRenderer from 'react-test-renderer/shallow';
import {TodayIntro} from './TodayIntro';
describe('TodayIntro', () => {
  it('should render a hello message with a date', () => {
    MockDate.set('2018-01-01');
    
    const renderer = new ShallowRenderer();
    renderer.render(<TodayIntro name="test" />);
    
    const result = renderer.getRenderOutput();
    expect(result.type).toBe('h1');
    expect(result.children).toBe(['hello test, today is Jan 1']);
    
    MockDate.reset();
  });
});