Failing jest test for WebARKitCV class.

WebARKitCV.test.ts

/**
 * @jest-environment jsdom
 */
import {describe, expect, test} from '@jest/globals';
import { WebARKitCV } from '../src/WebARKitCV';


describe('Init WebARKitCV and test the properties', () => {
  test('Init the constructor...', () => {
   
    document.body.innerHTML = '<img src="pinball.jpg" id="pinball" />';

    const wb = new WebARKitCV()
    .setHeight(480)
    .setWidth(640)
    .addTrackable("pinball", "./pinball.jpg")
    .loadTrackables()
    .build();

    expect(wb.height).toBe(480);
    expect(wb.width).toBe(640);
    expect(wb!.trackable!.name).toBe("pinball");
    expect(wb!.trackable!.url).toBe("./pinball.jpg");
  });
});