Basic for test component method in react + jest + enzyme because our decorator

Basic for test component method in react + jest + enzyme.js

import React from 'react';
import _ from 'lodash';
import { mount, shallow } from 'enzyme';
import NameOfComponent from '../src/NameOfComponent';

describe('NameOfComponent Basic: ', () => {
    
    it('should verified that component is exits', () => {
        const wrapper = mount(
            <NameOfComponent />
        );
        expect(wrapper).toHaveLength(1);
    });

    it('should verified that method name component works as as expected', () => {
        const wrapper = mount(shallow(<NameOfComponent propsname={200} />).get(0));
        expect(wrapper.instance().methodName()).toEqual(someValue);
    });
    
});