Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use NG_MOCKS_INTERCEPTORS method in ng-mocks

Best JavaScript code snippet using ng-mocks

auth-interceptor.service.spec.ts

Source:auth-interceptor.service.spec.ts

1import {2  HttpClientTestingModule,3  HttpTestingController,4} from "@angular/common/http/testing";5import { AuthInterceptor } from "./auth-interceptor.service";6import {7  HTTP_INTERCEPTORS,8  HttpClient,9  HttpClientModule,10} from "@angular/common/http";11import { AuthService } from "../services/auth.service";12import {13  MockBuilder,14  MockInstance,15  MockRender,16  NG_MOCKS_INTERCEPTORS,17} from "ng-mocks";18import { AppModule } from "app/app.module";19describe(`AuthInterceptor`, () => {20  beforeEach(() => {21    return MockBuilder(AuthInterceptor, AppModule)22      .replace(HttpClientModule, HttpClientTestingModule)23      .exclude(NG_MOCKS_INTERCEPTORS)24      .keep(HTTP_INTERCEPTORS)25      .mock(AuthService);26  });27  it("should add an Authorization header if user logged in", () => {28    MockInstance(AuthService, "loggedIn", true);29    MockInstance(AuthService, "auth", "auth");30    const fixture = MockRender("");31    const client: HttpClient = fixture.debugElement.injector.get(HttpClient);32    const httpMock: HttpTestingController = fixture.debugElement.injector.get(33      HttpTestingController34    );35    // Make an HTTP GET request36    client.get("https://test.test.test/").subscribe();37    const httpRequest = httpMock.expectOne("https://test.test.test/");38    httpRequest.flush("");39    httpMock.verify();40    expect(httpRequest.request.headers.has("Authorization")).toEqual(true);41  });42  it("should not add an Authorization header if user not logged in", () => {43    MockInstance(AuthService, "loggedIn", false);44    // Make an HTTP GET request45    const fixture = MockRender("");46    const client: HttpClient = fixture.debugElement.injector.get(HttpClient);47    const httpMock: HttpTestingController = fixture.debugElement.injector.get(48      HttpTestingController49    );50    // Make an HTTP GET request51    client.get("https://test.test.test/").subscribe();52    const httpRequest = httpMock.expectOne("https://test.test.test/");53    httpRequest.flush("");54    httpMock.verify();55    expect(httpRequest.request.headers.has("Authorization")).toEqual(false);56  });...

auth.interceptor.spec.ts

Source:auth.interceptor.spec.ts

1import { HTTP_INTERCEPTORS, HttpClientModule } from "@angular/common/http";2import { HttpClientTestingModule, HttpTestingController } from "@angular/common/http/testing";3import { TestBed } from "@angular/core/testing";4import { AppModule } from "@app/app.module";5import { AuthClassicApiService } from "@shared/services/api/classic/auth/auth-classic-api.service";6import { AuthInterceptor } from "@shared/services/auth.interceptor";7import { AuthService } from "@shared/services/auth.service";8import { MockBuilder, NG_MOCKS_INTERCEPTORS } from "ng-mocks";9import { CookieService } from "ngx-cookie";10describe(`AuthHttpInterceptor`, () => {11  let authService: AuthService;12  let authClassicApi: AuthClassicApiService;13  let httpMock: HttpTestingController;14  beforeEach(async () => {15    await MockBuilder(AuthInterceptor, AppModule)16      .exclude(NG_MOCKS_INTERCEPTORS)17      .keep(HTTP_INTERCEPTORS)18      .replace(HttpClientModule, HttpClientTestingModule)19      .keep(AuthService)20      .keep(AuthClassicApiService)21      .mock(CookieService, {22        get: jest.fn().mockReturnValue("classic-auth-token")23      });24    authService = TestBed.inject(AuthService);25    authClassicApi = TestBed.inject(AuthClassicApiService);26    httpMock = TestBed.inject(HttpTestingController);27  });28  afterEach(() => {29    httpMock.verify();30  });31  it("should add an Authorization header", () => {32    authService.login("handle", "password").subscribe(response => {33      expect(response).toBe(false);34    });35    const classicApiHttpRequest = httpMock.expectOne(`${authClassicApi.configUrl}/api-auth-token/`);36    expect(classicApiHttpRequest.request.headers.has("Authorization")).toEqual(true);37  });...

content-type.interceptor.spec.ts

Source:content-type.interceptor.spec.ts

1import { HttpClientTestingModule, HttpTestingController } from '@angular/common/http/testing';2import { HttpClient, HttpClientModule, HTTP_INTERCEPTORS } from '@angular/common/http';3import { TestBed } from '@angular/core/testing';4import {5    MockBuilder,6    MockRender,7    NG_MOCKS_INTERCEPTORS8} from 'ng-mocks';9import { ContentTypeInterceptor } from './content-type.interceptor';10import { AppModule } from '../app.module';11describe('ContentTypeInterceptor', () => {12    beforeEach(async () => {13        await TestBed.configureTestingModule({14            imports: [HttpClientTestingModule]15        });16    });17    beforeEach(() => {18        return MockBuilder(ContentTypeInterceptor, AppModule).19            exclude(NG_MOCKS_INTERCEPTORS).20            keep(HTTP_INTERCEPTORS).21            replace(HttpClientModule, HttpClientTestingModule);22    });23    it('should have content-type application/json in header', () => {24        const fixture = MockRender('');25        const client: HttpClient =26            fixture.debugElement.injector.get(HttpClient);27        const httpMock: HttpTestingController =28            fixture.debugElement.injector.get(HttpTestingController);29        client.get('/testroute').subscribe();30        const httpRequest = httpMock.expectOne('/testroute');31        expect(httpRequest.request.headers.get('Content-Type')).toEqual('application/json');32    });...

Using AI Code Generation

1import { MockBuilder, MockRender, ngMocks } from 'ng-mocks';2import { AppModule } from './app.module';3import { AppComponent } from './app.component';4describe('AppComponent', () => {5  beforeEach(() => MockBuilder(AppComponent, AppModule));6  it('should create the app', () => {7    const fixture = MockRender(AppComponent);8    const app = fixture.point.componentInstance;9    expect(app).toBeTruthy();10  });11  it('should render title', () => {12    const fixture = MockRender(AppComponent);13    fixture.detectChanges();14    const compiled = fixture.nativeElement;15    expect(compiled.querySelector('.content span').textContent).toContain('test app is running!');16  });17  it('should render title', () => {18    ngMocks.intercept({provide: 'MY_SERVICE', useValue: {getName: () => 'Test'}});19    const fixture = MockRender(AppComponent);20    fixture.detectChanges();21    const compiled = fixture.nativeElement;22    expect(compiled.querySelector('.content span').textContent).toContain('test app is running!');23  });24});25import { MockBuilder, MockRender, MockInstance } from 'ng-mocks';26import { AppModule } from './app.module';27import { AppComponent } from './app.component';28import { MyService } from './my.service';29describe('AppComponent', () => {30  beforeEach(() => MockBuilder(AppComponent, AppModule));31  it('should create the app', () => {32    const fixture = MockRender(AppComponent);33    const app = fixture.point.componentInstance;34    expect(app).toBeTruthy();35  });36  it('should render title', () => {37    const fixture = MockRender(AppComponent);38    fixture.detectChanges();39    const compiled = fixture.nativeElement;40    expect(compiled.querySelector('.content span').textContent).toContain('test app is running!');41  });42  it('should render title', () => {43    MockInstance(MyService, {getName: () => 'Test'});44    const fixture = MockRender(AppComponent);45    fixture.detectChanges();46    const compiled = fixture.nativeElement;47    expect(compiled.querySelector('.content span').textContent).toContain('test app is running!');48  });49});

Using AI Code Generation

1import { TestBed } from '@angular/core/testing';2import { HttpClientTestingModule, HttpTestingController } from '@angular/common/http/testing';3import { HttpClient } from '@angular/common/http';4import { AppComponent } from './app.component';5describe('AppComponent', () => {6  let httpMock: HttpTestingController;7  let http: HttpClient;8  beforeEach(() => {9    TestBed.configureTestingModule({10      imports: [HttpClientTestingModule],11    });12    httpMock = TestBed.get(HttpTestingController);13    http = TestBed.get(HttpClient);14  });15  afterEach(() => {16    httpMock.verify();17  });18  it('should return expected heroes (HttpClient called once)', () => {19    const testData = { name: 'Test Data' };20    http.get('/data').subscribe(data =>21      expect(data).toEqual(testData)22    );23    const req = httpMock.expectOne('/data');24    expect(req.request.method).toEqual('GET');25    req.flush(testData);26  });27});28import { Component } from '@angular/core';29import { HttpClient } from '@angular/common/http';30@Component({31})32export class AppComponent {33  title = 'my-app';34  data: any;35  constructor(private http: HttpClient) { }36  ngOnInit() {37    this.http.get('/data').subscribe((data) => {38      this.data = data;39    });40  }41}42< div > {{data.name}} < /div>43The async() method is used as follows:44it('should return expected heroes (HttpClient called once)', async(() => {45}));

Using AI Code Generation

1import { NG_MOCKS_INTERCEPTORS } from 'ng-mocks';2describe('Test', () => {3  beforeEach(() => {4    TestBed.configureTestingModule({5      imports: [HttpClientTestingModule],6        {7        },8    });9  });10  it('should intercept request', () => {11    const http = TestBed.inject(HttpClient);12    http.get('/test').subscribe((data) => {13      expect(data).toEqual('test');14    });15  });16});17import { mockInterceptors } from 'ng-mocks';18describe('Test', () => {19  beforeEach(() => {20    TestBed.configureTestingModule({21      imports: [HttpClientTestingModule],22        {23          useValue: mockInterceptors(),24        },25    });26  });27  it('should intercept request', () => {28    const http = TestBed.inject(HttpClient);29    http.get('/test').subscribe((data) => {30      expect(data).toEqual('test');31    });32  });33});34import { mockInterceptors } from 'ng-mocks';35describe('Test', () => {36  beforeEach(() => {37    TestBed.configureTestingModule({38      imports: [HttpClientTestingModule],39        {40          useValue: mockInterceptors(),41        },42    });43  });44  it('should intercept request', () => {45    const http = TestBed.inject(HttpClient);46    http.get('/test').subscribe((data) => {47      expect(data).toEqual('test');48    });49  });50});51import { mockInterceptors } from 'ng-mocks';52describe('Test', () => {53  beforeEach(() => {54    TestBed.configureTestingModule({55      imports: [HttpClientTestingModule],56        {57          useValue: mockInterceptors(),58        },59    });60  });61  it('should intercept request', () => {62    const http = TestBed.inject(HttpClient);

Using AI Code Generation

1import {NG_MOCKS_INTERCEPTORS} from 'ng-mocks';2import {HTTP_INTERCEPTORS} from '@angular/common/http';3describe('Test', () => {4  beforeEach(() => {5    TestBed.configureTestingModule({6      imports: [HttpClientTestingModule],7        {8        },9    });10  });11  it('should work', () => {12    const http: HttpClient = TestBed.get(HttpClient);13    expect(NG_MOCKS_INTERCEPTORS.length).toBe(1);14  });15});16Error: StaticInjectorError(AppModule)[HttpClient -> HttpClient -> HttpClient]: 17  StaticInjectorError(Platform: core)[HttpClient -> HttpClient -> HttpClient]:

Using AI Code Generation

1import { TestBed } from '@angular/core/testing';2import { HTTP_INTERCEPTORS } from '@angular/common/http';3import { MockInterceptor } from 'ng-mocks';4import { HttpMockService } from './http-mock.service';5import { HttpService } from './http.service';6describe('HttpService', () => {7  let service: HttpService;8  beforeEach(() => {9    TestBed.configureTestingModule({10        {11        },12    });13    service = TestBed.inject(HttpService);14  });15  it('should be created', () => {16    expect(service).toBeTruthy();17  });18  it('should return mocked data', () => {19    const mockData = [{ id: 1, name: 'test' }];20    HttpMockService.mock('/api/test', mockData);21    service.get('/api/test').subscribe((res) => {22      expect(res).toEqual(mockData);23    });24  });25});26import { Injectable } from '@angular/core';27import {28} from '@angular/common/http';29import { MockBuilder, MockRender } from 'ng-mocks';30import { Observable } from 'rxjs';31@Injectable()32export class HttpMockService implements HttpInterceptor {33  private backend: HttpBackend;34  constructor(handler: HttpHandler) {35    this.backend = handler as HttpBackend;36  }37  public intercept(38  ): Observable<HttpEvent<unknown>> {39    return this.backend.handle(request);40  }41  public static mock(url: string, data: any): void {42    MockBuilder(HttpMockService)43      .mock(HttpMockService, {44        handle: (req: HttpRequest<unknown>) => {45          if (req.url === url) {46            return MockRender(data);47          }48          return MockRender(null);49        },50      })51      .keep(HttpMockService);52  }53}54import { Injectable } from '@angular/core';55import { HttpClient } from '@angular/common/http';56import { Observable } from 'rxjs';57@Injectable({

Using AI Code Generation

1import {NG_MOCKS_INTERCEPTORS} from 'ng-mocks';2import {MyInterceptor} from './my-interceptor';3describe('MyInterceptor', () => {4  const mockInterceptor = NG_MOCKS_INTERCEPTORS(MyInterceptor);5  mockInterceptor.intercept(...);6});

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.