Enzyme test for welcome.tsx

welcome.test.tsx

import * as React from "react";
import {Welcome} from "./welcome";
import {shallow} from "enzyme";

const name = "Tester;

describe("<Welcome />", () => {
    
    it("renders a greeting from the name", () => {
        const wrapper = shallow(<Welcome name={name} onClick={() => null} />);
        expect(wrapper.text()).toBe(`Welcome, ${name}!`);
    });

    it("calls back when clicked", () => {
        let clicked = false;
        const onClick = () => clicked = true;
        const wrapper = shallow(<Welcome name={name} onClick={onClick} />);
        wrapper.find("div").simulate("click", { preventDefault: () => undefined });
        expect(clicked).toEqual(true);
    });
    
});