KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta Join TestMu Conference

How to use TOKEN_CLASS_MOCK method in ng-mocks

Best JavaScript code snippet using ng-mocks

test.spec.ts

Source:test.spec.ts

1import { Injectable, InjectionToken, NgModule } from '@angular/core';2import { MockBuilder, ngMocks } from 'ng-mocks';3@Injectable()4class Class1Service {5  public constructor(public readonly name: string) {}6}7@Injectable()8class Class2Service {9  public readonly name = 'class2';10}11const TOKEN_CLASS_MOCK = new InjectionToken('MOCK');12const TOKEN_CLASS_KEEP = new InjectionToken('KEEP');13@NgModule({14  providers: [15    {16      provide: 'name',17      useValue: 'useValue',18    },19    {20      deps: ['name'],21      provide: Class1Service,22      useClass: Class1Service,23    },24    Class2Service,25    {26      deps: ['name'],27      provide: TOKEN_CLASS_MOCK,28      useClass: Class1Service,29    },30    {31      deps: ['name'],32      provide: TOKEN_CLASS_KEEP,33      useClass: Class2Service,34    },35  ],36})37class TargetModule {}38// fix for jest without jasmine assertions39const assertion: any =40  typeof jasmine === 'undefined' ? expect : jasmine;41// useClass ignores existing services with the same class name, but42// ng-mocks still detects whether the class should be replaced with a mock copy or not.43describe('tokens-class', () => {44  ngMocks.faster();45  beforeEach(() =>46    MockBuilder().mock(TargetModule).keep(Class2Service),47  );48  it('resolves Class1Service as a mock instance', () => {49    const actual = ngMocks.findInstance(Class1Service);50    expect(actual).toEqual(assertion.any(Class1Service));51    expect(actual.name).toBeUndefined();52  });53  it('resolves Class2Service as a real instance', () => {54    const actual = ngMocks.findInstance(Class2Service);55    expect(actual).toEqual(assertion.any(Class2Service));56    expect(actual.name).toEqual('class2');57  });58  it('resolves TOKEN_EXISTING_MOCK as a mock instance', () => {59    const actual = ngMocks.findInstance<any>(TOKEN_CLASS_MOCK);60    expect(actual).toEqual(assertion.any(Class1Service));61    expect(actual.name).toBeUndefined();62  });63  it('resolves TOKEN_EXISTING_KEEP as a real instance', () => {64    const actual = ngMocks.findInstance<any>(TOKEN_CLASS_KEEP);65    expect(actual).toEqual(assertion.any(Class2Service));66    expect(actual.name).toEqual('class2');67  });...

Using AI Code Generation

1import { TOKEN_CLASS_MOCK } from 'ng-mocks';2import { MyService } from './my.service';3import { MyComponent } from './my.component';4describe('MyComponent', () => {5  let component: MyComponent;6  let service: MyService;7  beforeEach(() => {8    TestBed.configureTestingModule({9        {10          useFactory: () => ({11            myMethod: () => 'a',12          }),13        },14    });15    component = TestBed.inject(MyComponent);16    service = TestBed.inject(MyService);17  });18  it('should work', () => {19    spyOn(service, 'myMethod').and.returnValue('b');20    expect(component.myMethod()).toEqual('a');21  });22});23import { Injectable } from '@angular/core';24@Injectable()25export class MyService {26  myMethod() {27    return 'a';28  }29}30import { Component } from '@angular/core';31import { MyService } from './my.service';32@Component({33})34export class MyComponent {35  constructor(private readonly service: MyService) {}36  myMethod() {37    return this.service.myMethod();38  }39}40import { TOKEN_CLASS_MOCK } from 'ng-mocks';41import { MyService } from './my.service';42import { MyComponent } from './my.component';43describe('MyComponent', () => {44  let component: MyComponent;45  let service: MyService;46  beforeEach(() => {47    TestBed.configureTestingModule({48        {49          useFactory: () => ({50            myMethod: () => 'a',51          }),52        },53    });54    component = TestBed.inject(MyComponent);55    service = TestBed.inject(MyService);56  });57  it('should work', () => {58    spyOn(service, 'myMethod').and.returnValue('b');59    expect(component.myMethod()).toEqual('a');60  });61});62import { Injectable } from '@angular/core';63@Injectable()64export class MyService {65  myMethod() {66    return 'a';67  }68}69import { Component } from '@angular/core';70import { MyService } from './my.service';71@Component({

Using AI Code Generation

1import { TOKEN_CLASS_MOCK } from 'ng-mocks';2describe('TestComponent', () => {3  beforeEach(() => {4    TestBed.configureTestingModule({5        {6          useValue: {7            method: () => 'mocked',8          },9        },10    });11  });12  it('should create', () => {13    const fixture = TestBed.createComponent(TestComponent);14    fixture.detectChanges();15    expect(fixture.componentInstance).toBeTruthy();16  });17});18import { TOKEN_CLASS_MOCK } from 'ng-mocks';19describe('TestComponent', () => {20  beforeEach(() => {21    TestBed.configureTestingModule({22        {23          useValue: {24            method: () => 'mocked',25          },26        },27    });28  });29  it('should create', () => {30    const fixture = TestBed.createComponent(TestComponent);31    fixture.detectChanges();32    expect(fixture.componentInstance).toBeTruthy();33  });34});35import { TOKEN_CLASS_MOCK } from 'ng-mocks';36describe('TestComponent', () =>

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.