Sometimes, we want to simulate a button click in Jest.

In this article, we’ll look at how to simulate a button click in Jest.

How to simulate a button click in Jest?

To simulate a button click in Jest, we can call the simulate method.

For instance, we write:

import React from 'react';
import {
  shallow
} from 'enzyme';
import Button from './Button';

describe('Test Button component', () => {
  it('Test click event', () => {
    const mockCallBack = jest.fn();

    const button = shallow(<Button onClick={mockCallBack}>Ok</Button>);
      button.find('button').simulate('click'); expect(mockCallBack.mock.calls.length).toEqual(1);
    });
  });
})

to call shallow to mount the Button component.

Then we call find with 'button' to find the button element.

And then we call simulate with 'click' to simulate a click on it.

Then we call expect to check that the mockCallBack has been called once by checking mockCallBack.mock.calls.length.

Conclusion

To simulate a button click in Jest, we can call the simulate method.