tc65-not-implement-HTMLMediaElement.prototype.load

Test Case: JSDOM does not implement HTMLMediaElement.prototype.load

Test Case Code

https://drive.google.com/file/d/1dkFjRWnYFVho75eq61iwFunB-qDSKgeB/view?usp=sharing

// check file
app.component.spec.ts

Topcoder handle

applehit16

Your document content (required)

How to run test

Prerequisites

1. Node 8+
2. NPM or yarn
3. Git
4. Safari, Chrome, Firefox

Run Test on Karma

cd topcoder-jest-test
git checkout issue-74
npm install
npm run test

Run Test on Jest

npm run test:jest

Browser have tested

Chrome, Safari, Firefox

Test Result on Karma

Browser	Result
Chrome 72.0.3626 (Mac OS X 10.14.2)	success
Safari 11.1.0 (Mac OS X 10.14.2)	success
Firefox 65.0.0 (Mac OS X 10.14.2)	success

Test Result on Jest

What we get

 FAIL  src/app/app.component.spec.ts
  AppComponent
    ✕ should create the app (88ms)

  ● AppComponent › should create the app

    AssertionError: expected [Function: load] to be an instance of Function

      20 |     const el = fixture.nativeElement.querySelector('#test');
      21 |     const audio = new Audio('');
    > 22 |     expect(audio.load).to.be.an.instanceof(Function);
         |     ^
      23 |   });
      24 | });
      25 | 

      at src/app/app.component.spec.ts:22:5

Test Suites: 1 failed, 1 total
Tests:       1 failed, 1 total
Snapshots:   0 total
Time:        1.957s, estimated 2s

Expected

Expect TMLMediaElement.prototype.load, which is also Audio.prototype.load to be a function

Description

JSDOM does not implement HTMLMediaElement.prototype.load

jsdom issue: jsdom/jsdom#1515