testing a function in jest on click react

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09 Aug 2018

1import React from 'react';
2import { shallow } from 'enzyme';
3import Button from './Button';
4
5describe('Test Button component', () => {
6  it('Test click event', () => {
7    const mockCallBack = jest.fn();
8
9    const button = shallow((<Button onClick={mockCallBack}>Ok!</Button>));
10    button.find('button').simulate('click');
11    expect(mockCallBack.mock.calls.length).toEqual(1);
12  });
13});
14

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