What is TestBed in Jasmine
<p>I am new to Jasmine with Angular 2, I am frequently working with the TestBed object when writting a Testcase and getting the error:<code>Please call "TestBed.compileComponents" before your test.</code> </p>

<p>How do I solve this error?</p>

<pre><code>@Component({
  moduleId:module.id,
    selector: 'my-app',
    templateUrl: 'app-component.html',

})
</code></pre>