angular-cli/packages/schematics/angular/application/other-files/app.component.spec.ts.template

import { TestBed } from '@angular/core/testing';<% if (routing) { %>
import { RouterTestingModule } from '@angular/router/testing';<% } %>
import { AppComponent } from './app.component';

describe('AppComponent', () => {
  beforeEach(async () => {
    await TestBed.configureTestingModule({<% if (routing) { %>
      imports: [
        RouterTestingModule
      ],<% } %>
      declarations: [
        AppComponent
      ],
    }).compileComponents();
  });

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

  it(`should have as title '<%= name %>'`, () => {
    const fixture = TestBed.createComponent(AppComponent);
    const app = fixture.componentInstance;
    expect(app.title).toEqual('<%= name %>');
  });

  it('should render title', () => {
    const fixture = TestBed.createComponent(AppComponent);
    fixture.detectChanges();
    const compiled = fixture.nativeElement as HTMLElement;
    expect(compiled.querySelector('.content span')?.textContent).toContain('<%= name %> app is running!');
  });
});