app.component.spec.ts

import {TestBed, waitForAsync} from '@angular/core/testing';
import {RouterTestingModule} from '@angular/router/testing';
import {AppComponent} from './app.component';

describe('AppComponent', () => {
  beforeEach(waitForAsync(() => {
    TestBed
        .configureTestingModule({
          imports: [AppComponent],
        })
        .compileComponents();
  }));

  it('should create the app', () => {
    const fixture = TestBed.createComponent(AppComponent);
    const app = fixture.componentInstance;
    expect(app).toBeTruthy();
  });

  it(`should have as title 'cli-hello-world-lazy'`, () => {
    const fixture = TestBed.createComponent(AppComponent);
    const app = fixture.componentInstance;
    expect(app.title).toEqual('cli-hello-world-lazy');
  });

  it('should render title', () => {
    const fixture = TestBed.createComponent(AppComponent);
    fixture.detectChanges();
    const compiled = fixture.debugElement.nativeElement;
    expect(compiled.querySelector('.content span').textContent)
        .toContain('cli-hello-world-lazy app is running!');
  });
});