tc21-not-support-Cache-API

Test Case: [API UNSUPPORTED] - JSDOM doesn't support Cache api

Test Case Code

https://drive.google.com/open?id=1IayEFjUReATiuJI8CD6hBQRPGR7iIrFZ

// check file
app.component.spec.ts

Topcoder handle

liqiang372

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-24
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 (69ms)

● AppComponent › should create the app

ReferenceError: Cache is not defined

  17 | 
  18 |   it('should create the app', () => {
> 19 |     expect(Cache).to.be.an.instanceOf(Function);
     |            ^
  20 |     expect(caches).to.be.an.instanceOf(Object);
  21 |   });
  22 | });

  at src/app/app.component.spec.ts:19:12

Test Suites: 1 failed, 1 total Tests: 1 failed, 1 total Snapshots: 0 total Time: 2.736s

Expected

Expect Cache and caches to be defined

Description

JSDOM doesn't support Cache API

issue: jsdom/jsdom#2422