Installing the Karma CLI

To install the Karma CLI, enter the following command:

npm install -g karma-cli

Our test will be executed in a .spec.ts file. Create a new test file (sampletest.spec.ts) in the ./app/ folder and copy the following:

// ./app/sampletest.spec.tsdescribe('Sample Test', () => { it('true is true', () => expect(true).toBe(true)); });  import {AppComponent} from './app.component';  describe('AppComponent', () => { beforeEach(function() { this.app = new AppComponent(); });  it('should have hello property', function() { expect(this.app.hello).toBe('Hello, World!'); }); });

In the preceding code, we first write a sample test to showcase the main concepts in Jamine. We create a test suite, define our test suite, and write the ...

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