enzyme testing

// global config react and enzyme

import { configure } from 'enzyme'
import Adapter from 'enzyme-adapter-react-16'
import { shallow, mount, render } from 'enzyme'
import renderer from 'react-test-renderer'

configure({ adapter: new Adapter() })

global.shallow = shallow
global.mount = mount
global.render = render
global.renderer = renderer

import Enzyme from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';

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

npm i --save-dev enzyme enzyme-adapter-react-16