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app-initial.component.spec.ts
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app-initial.component.spec.ts
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// #docplaster
// #docregion
import { TestBed, waitForAsync } from '@angular/core/testing';
// #enddocregion
import { AppComponent } from './app-initial.component';
/*
// #docregion
import { AppComponent } from './app.component';
describe('AppComponent', () => {
// #enddocregion
*/
describe('AppComponent (initial CLI version)', () => {
// #docregion
beforeEach(waitForAsync(() => {
TestBed
.configureTestingModule({
declarations: [AppComponent],
})
.compileComponents();
}));
it('should create the app', waitForAsync(() => {
const fixture = TestBed.createComponent(AppComponent);
const app = fixture.componentInstance;
expect(app).toBeTruthy();
}));
it(`should have as title 'app'`, waitForAsync(() => {
const fixture = TestBed.createComponent(AppComponent);
const app = fixture.componentInstance;
expect(app.title).toEqual('app');
}));
it('should render title', waitForAsync(() => {
const fixture = TestBed.createComponent(AppComponent);
fixture.detectChanges();
const compiled = fixture.nativeElement;
expect(compiled.querySelector('h1').textContent).toContain('Welcome to app!');
}));
});
// #enddocregion
/// As it should be
import { DebugElement } from '@angular/core';
import { ComponentFixture } from '@angular/core/testing';
describe('AppComponent (initial CLI version - as it should be)', () => {
let app: AppComponent;
let de: DebugElement;
let fixture: ComponentFixture<AppComponent>;
beforeEach(() => {
TestBed.configureTestingModule({
declarations: [AppComponent],
});
fixture = TestBed.createComponent(AppComponent);
app = fixture.componentInstance;
de = fixture.debugElement;
});
it('should create the app', () => {
expect(app).toBeDefined();
});
it(`should have as title 'app'`, () => {
expect(app.title).toEqual('app');
});
it('should render title in an h1 tag', () => {
fixture.detectChanges();
expect(de.nativeElement.querySelector('h1').textContent).toContain('Welcome to app!');
});
});