app.component.spec.ts

import {registerLocaleData} from '@angular/common';
import {TestBed, async} from '@angular/core/testing';
import {AppComponent} from './app.component';

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

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

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

  it('should render title in a h1 tag', () => {
    const fixture = TestBed.createComponent(AppComponent);
    fixture.detectChanges();
    const compiled = fixture.debugElement.nativeElement;
    expect(compiled.querySelector('h1').textContent).toContain('Hello cli-hello-world-ivy-compat!');
  });
});