demo/src/components/Title/title.test.jsx
import React from 'react';
import { shallow } from 'enzyme';
import Title from './index';
test('renders without crashing', () => {
const title = shallow(<Title text="Dummy text" />);
expect(title.find('h1')).toHaveLength(1);
expect(title.hasClass('main')).toBeTruthy();
expect(title.text()).toBe('Dummy text');
});