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const favoriteUrl = 'test.favorite.com'; | |
export const environment = { | |
production: false, | |
favoriteUrl | |
}; |
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describe('FavoriteMoviesService', () => { | |
let serviceUnderTest: FavoriteMoviesService; | |
let http: HttpTestingController; | |
beforeEach(() => { | |
TestBed.configureTestingModule({ | |
imports: [HttpClientTestingModule], | |
providers: [FavoriteMoviesService] | |
}); |
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export class FavoriteMoviesService { | |
constructor(private http: HttpClient) {} | |
getFavoriteMovies(): Observable<Movie[]> { | |
return this.http.get<Movie[]>(environment.favoriteUrl); | |
} | |
} |
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it('should throw if the backend returns an error ', () => { | |
let bubblesUpTheError = false; | |
serviceUnderTest.getFavoriteMovies().subscribe(() => {}, () => (bubblesUpTheError = true)); | |
const req = http.expectOne(environment.favoriteUrl, 'expected to make a request'); | |
expect(req.request.method).toEqual('GET'); | |
req.flush('ERROR', { status: 500, statusText: 'Internal server error' }); | |
expect(bubblesUpTheError).toBeTruthy(); | |
http.verify(); |
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it('should fail if the backend returns an error 3 times in a row', done => { | |
let bubblesUpTheError = false; | |
serviceUnderTest.getFavoriteMovies().subscribe(() => {}, () => (bubblesUpTheError = true); | |
const req = http.expectOne(environment.favoriteUrl, 'expected to make an initial request'); | |
expect(req.request.method).toEqual('GET'); | |
req.flush('ERROR', { status: 500, statusText: 'Internal server error' }); | |
const req2 = http.expectOne(environment.favoriteUrl, 'expected to make a second request'); | |
expect(req2.request.method).toEqual('GET'); |
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getFavoriteMovies(): Observable<Movie[]> { | |
return this.http.get<Movie[]>(environment.favoriteUrl).pipe(retry(2)); | |
} |
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it('should return the list of favorite movies if the backend returns an error 2 times and the succeds', () => { | |
let favoriteMovies: Movie[] = []; | |
serviceUnderTest.getFavoriteMovies().subscribe(data => { | |
favoriteMovies = data; | |
}); | |
const req = http.expectOne(environment.favoriteUrl, 'expected to make an initial request'); | |
expect(req.request.method).toEqual('GET'); | |
req.flush('ERROR', { status: 500, statusText: 'Internal server error' }); |
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import { HttpClient } from '@angular/common/http'; | |
import { Injectable } from '@angular/core'; | |
import { Observable } from 'rxjs'; | |
import { retry } from 'rxjs/operators'; | |
import { environment } from 'src/environments/environment'; | |
import { Movie } from '../movie-list/core/models/movie'; | |
@Injectable() | |
export class FavoriteMoviesService { | |
constructor(private http: HttpClient) {} |
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import { HttpClientTestingModule, HttpTestingController } from '@angular/common/http/testing'; | |
import { TestBed } from '@angular/core/testing'; | |
import { environment } from 'src/environments/environment'; | |
import { Movie } from '../movie-list/core/models/movie'; | |
import { FavoriteMoviesService } from './favorite-movies.service'; | |
const moviesToUse = [ | |
{ title: 'Interstellar' } as Movie, | |
{ title: 'The Green Book' } as Movie, | |
{ title: 'Dark Knight' } as Movie |
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@Component({ | |
selector: "kpd-favorite-movie", | |
templateUrl: "./favorite-movie.component.html", | |
styleUrls: ["./favorite-movie.component.scss"], | |
changeDetection: ChangeDetectionStrategy.OnPush | |
}) | |
export class FavoriteMovieComponent { | |
@Input() favoriteMovie: Movie; | |
@Output() deleteMovie = new EventEmitter<Movie>(); |