How to test a prop update on React component

Question

What is the correct way of unit testing a React component prop update.

Here is my test fixture;

describe(\'updating the value\', function(){
                 


        

Answer 1

You can use enzyme to mount components and add props to it:

import React form 'react';
import component;
import {configure, mount} form 'enzyme';
import Adapter from 'enzyme-adapter-react-16';
import {expect} from 'chai';

configure({adapter: new Adapter()});

describe('Testing component', () => {
  let wrapper;
  beforeEach(() => {
    component = mount();
  });
  it('should update the state of the component when the value prop is changed', function(){

    expect(component.props().children.props.value).toBe(false);
});