React Enzyme Jest test component with className

Question

I am Following both the Enzyme examples for .find() and this GitHub enzyme-example-jest example to get a basic component to test and verify the outer-most element className exists, I do not understand why this does not pass:

// REACT COMPONENT

class VisitorShortcut extends Component {
//all the props & lifecycle hooks here
render() {
        return (
            <div className="visitor-shortcuts"> // <-- this className is being tested
                <div
                    onClick={e => e.stopPropagation()}
                    className="dropdown open"
                >
                    <ul
                        style={style}
                        ref="shortcutContainer"
                        className={"dropdown-menu "}
                    >
                        {results}
                    </ul>
                </div>
            </div>
        );
    }
}

// TEST FILE

import React from "react";
import { shallow, mount } from "enzyme";
import VisitorShortcut from "../VisitorShortcut";

describe("Shortcuts", () => {
  test("The main Class exists", () => {
    expect(
        (<VisitorShortcut />).find(".visitor-shortcuts").length
    ).toBe(1);
  });
});

// OUTPUT

Expected value to be (using ===):
  1
Received:
  0

if I switch to expect(wrapper.find('div.some-class')).to.have.length(3); as per Enzyme docs, the output is TypeError: Cannot read property 'have' of undefined

I am fairly sure I do not need to use the mount API instead of shallow

Thanks for helping to clarify this. It seems so basic...

Answer 1

as per Enzyme doc you can do as below:

const wrapper = shallow(<VisitorShortcut />);
expect(wrapper.find("div.visitor-shortcuts").length).toBe(1)