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How to use serviceCustomizeInstance method in ng-mocks

Best JavaScript code snippet using ng-mocks

test.ng-mocks.spec.ts

Source:test.ng-mocks.spec.ts

1import { HttpClientModule } from '@angular/common/http';2import { HttpClientTestingModule } from '@angular/common/http/testing';3import { inject, TestBed } from '@angular/core/testing';4import { isMockedNgDefOf, MockBuilder, NG_MOCKS } from 'ng-mocks';5import {6  KeepComponent,7  MockComponent,8  My1Component,9  My2Component,10  My3Component,11  MyComponent,12} from './spec.components.fixtures';13import {14  KeepDirective,15  MockDirective,16} from './spec.directives.fixtures';17import {18  ModuleKeep,19  ModuleMock,20  MyModule,21} from './spec.modules.fixtures';22import {23  KeepPipe,24  MockPipe,25  RestorePipe,26} from './spec.pipes.fixtures';27import {28  ServiceCustomize,29  ServiceKeep,30  ServiceMock,31} from './spec.services.fixtures';32import {33  TOKEN_CUSTOMIZE,34  TOKEN_KEEP,35  TOKEN_MOCK,36} from './spec.tokens.fixtures';37describe('MockBuilder:ngMocks', () => {38  beforeEach(async () => {39    const ngModule = MockBuilder(MyComponent, MyModule)40      .keep(ModuleKeep)41      .keep(KeepComponent)42      .keep(KeepDirective)43      .keep(KeepPipe)44      .keep(ServiceKeep)45      .keep(TOKEN_KEEP)46      .replace(HttpClientModule, HttpClientTestingModule)47      .mock(ModuleMock)48      .mock(MockComponent)49      .mock(MockDirective)50      .mock(MockPipe)51      .mock(ServiceMock) // makes all methods an empty function52      .mock(TOKEN_MOCK) // makes its value undefined53      .mock(ServiceCustomize, {54        getName: () => 'My Customized String',55      })56      .mock(TOKEN_CUSTOMIZE, 'My_Token')57      // Now the pipe will not be replaced with its mock copy.58      .keep(RestorePipe)59      // Even it belongs to the module we want to keep,60      // it will be still replaced with a mock copy.61      .mock(My3Component)62      // and now we want to build our NgModule.63      .build();64    TestBed.configureTestingModule(ngModule);65    // Extra configuration66    TestBed.overrideTemplate(67      My1Component,68      'If we need to tune testBed',69    );70    TestBed.overrideTemplate(My2Component, 'More callbacks');71    return TestBed.compileComponents();72  });73  it('should contain mocks', inject(74    [NG_MOCKS],75    (mocks: Map<any, any>) => {76      // main part77      const myComponent = mocks.get(MyComponent);78      expect(myComponent).toBe(MyComponent);79      const myModule = mocks.get(MyModule);80      expect(isMockedNgDefOf(myModule, MyModule, 'm')).toBeTruthy();81      // keep82      const keepComponent = mocks.get(KeepComponent);83      expect(keepComponent).toBe(keepComponent);84      const keepDirective = mocks.get(KeepDirective);85      expect(keepDirective).toBe(keepDirective);86      const keepPipe = mocks.get(KeepPipe);87      expect(keepPipe).toBe(keepPipe);88      const serviceKeep = mocks.get(ServiceKeep);89      expect(serviceKeep).toBe(ServiceKeep);90      const tokenKeep = mocks.get(TOKEN_KEEP);91      expect(tokenKeep).toBe(TOKEN_KEEP);92      // replace93      const httpClientModule = mocks.get(HttpClientModule);94      expect(httpClientModule).toBe(HttpClientTestingModule);95      // mimic96      const moduleMock = mocks.get(ModuleMock);97      expect(98        isMockedNgDefOf(moduleMock, ModuleMock, 'm'),99      ).toBeTruthy();100      const mockComponent = mocks.get(MockComponent);101      expect(102        isMockedNgDefOf(mockComponent, MockComponent, 'c'),103      ).toBeTruthy();104      const mockDirective = mocks.get(MockDirective);105      expect(106        isMockedNgDefOf(mockDirective, MockDirective, 'd'),107      ).toBeTruthy();108      const mockPipe = mocks.get(MockPipe);109      expect(isMockedNgDefOf(mockPipe, MockPipe, 'p')).toBeTruthy();110      const serviceMock = mocks.get(ServiceMock);111      expect(serviceMock).toBeDefined();112      expect(serviceMock.useFactory).toBeDefined();113      const serviceMockInstance = serviceMock.useFactory();114      expect(serviceMockInstance.getName).toBeDefined();115      expect(serviceMockInstance.getName()).toBeUndefined();116      expect(mocks.has(TOKEN_MOCK)).toBeDefined();117      expect(mocks.get(TOKEN_MOCK)).toBeDefined();118      // customize119      const serviceCustomize = mocks.get(ServiceCustomize);120      expect(serviceCustomize).toBeDefined();121      expect(serviceCustomize.useFactory).toBeDefined();122      const serviceCustomizeInstance = serviceCustomize.useFactory();123      expect(serviceCustomizeInstance.getName).toBeDefined();124      expect(serviceCustomizeInstance.getName()).toEqual(125        'My Customized String',126      );127      const tokenCustomize = mocks.get(TOKEN_CUSTOMIZE);128      expect(tokenCustomize).toBeDefined();129      expect(tokenCustomize.useFactory).toBeDefined();130      const tokenCustomizeValue = tokenCustomize.useFactory();131      expect(tokenCustomizeValue).toEqual('My_Token');132      // restore133      const restorePipe = mocks.get(RestorePipe);134      expect(restorePipe).toBe(restorePipe);135      // mock nested136      const myComponent3 = mocks.get(My3Component);137      expect(138        isMockedNgDefOf(myComponent3, My3Component, 'c'),139      ).toBeTruthy();140    },141  ));...

Using AI Code Generation

1import { serviceCustomizeInstance } from 'ng-mocks';2import { Service } from './service';3import { TestBed } from '@angular/core/testing';4import { ServiceModule } from './service.module';5describe('Service', () => {6  let service: Service;7  beforeEach(() => {8    TestBed.configureTestingModule({9      imports: [ServiceModule],10    });11    service = TestBed.inject(Service);12  });13  it('should be created', () => {14    expect(service).toBeTruthy();15  });16  it('should have a spy on method', () => {17    serviceCustomizeInstance(service, {18      method: () => 'mocked method',19    });20    expect(service.method()).toEqual('mocked method');21  });22});23import { serviceCustomizeInstance } from 'ng-mocks';24import { Component } from '@angular/core';25import { TestBed } from '@angular/core/testing';26import { Service } from './service';27import { ServiceModule } from './service.module';28@Component({29    <div>{{ service.method() }}</div>30})31class Component {32  constructor(public readonly service: Service) {}33}34describe('Component', () => {35  let component: Component;36  beforeEach(() => {37    TestBed.configureTestingModule({38      imports: [ServiceModule],39    });40    component = TestBed.createComponent(Component).componentInstance;41  });42  it('should be created', () => {43    expect(component).toBeTruthy();44  });45  it('should have a spy on method', () => {46    serviceCustomizeInstance(component.service, {47      method: () => 'mocked method',48    });49    expect(component.service.method()).toEqual('mocked method');50  });51});52import { serviceCustomizeInstance } from 'ng-mocks';53import { Service } from './service';54import { TestBed } from '@angular/core/testing';55import { ServiceModule } from './service.module';56describe('Service', () => {57  let service: Service;58  beforeEach(() => {59    TestBed.configureTestingModule({60      imports: [ServiceModule],61    });

Using AI Code Generation

1import { serviceCustomizeInstance } from 'ng-mocks';2class TestClass {3  public testMethod() {4    return 'test';5  }6}7serviceCustomizeInstance(TestClass, {8  testMethod: () => 'mocked',9});10import { serviceCustomizeInstance } from 'ng-mocks';11describe('serviceCustomizeInstance', () => {12  it('should customize instance', () => {13    const service = new TestClass();14    serviceCustomizeInstance(service, {15      testMethod: () => 'mocked',16    });17    expect(service.testMethod()).toBe('mocked');18  });19});20serviceCustomizeInstance(TestClass, {21  testMethod: () => 'mocked',22});23serviceCustomizeInstance(new TestClass(), {24  testMethod: () => 'mocked',25});26serviceCustomizeInstance(TestClass, {27  testMethod: () => 'mocked',28});29serviceCustomizeInstance(new TestClass(), {30  testMethod: () => 'mocked',31});32serviceCustomizeInstance(TestClass, {33  testMethod: () => 'mocked',34});35serviceCustomizeInstance(new TestClass(), {36  testMethod: () => 'mocked',37});38serviceCustomizeInstance(TestClass, {39  testMethod: () => 'mocked',40});41serviceCustomizeInstance(new

Using AI Code Generation

1import { serviceCustomizeInstance } from 'ng-mocks';2describe('mocking a service', () => {3  it('should mock a service', () => {4    const mockService = serviceCustomizeInstance(MyService, {5      myMethod: () => {6        return 'mocked value';7      },8    });9    const service = new MyService();10    expect(service.myMethod()).toBe('mocked value');11  });12});13import { Injectable } from '@angular/core';14@Injectable()15export class MyService {16  myMethod() {17    return 'real value';18  }19}20import { serviceCustomizeInstance } from 'ng-mocks';21describe('mocking a service', () => {22  it('should mock a service', () => {23    const mockService = serviceCustomizeInstance(MyService, {24      myMethod: () => {25        return 'mocked value';26      },27    });28    const service = new MyService();29    expect(service.myMethod()).toBe('mocked value');30  });31});32import { Injectable } from '@angular/core';33@Injectable()34export class MyService {35  myMethod() {36    return 'real value';37  }38}

Using AI Code Generation

1import { serviceCustomizeInstance } from 'ng-mocks';2import { UserService } from './user.service';3import { User } from './user.model';4describe('UserService', () => {5  let service: UserService;6  beforeEach(() => {7    service = serviceCustomizeInstance(UserService, {8      getUsers() {9        return of([10          { id: 1, name: 'User 1' },11          { id: 2, name: 'User 2' },12          { id: 3, name: 'User 3' },13        ]);14      },15      addUser(user: User) {16        this.users.push(user);17      },18      removeUser(user: User) {19        this.users.splice(this.users.indexOf(user), 1);20      },21    });22  });23  it('should return a list of users', () => {24    service.getUsers().subscribe((users) => {25      expect(users.length).toBe(3);26    });27  });28  it('should add a user to the list of users', () => {29    let users: User[];30    service.getUsers().subscribe((users) => {31      expect(users.length).toBe(3);32    });33    service.addUser({ id: 4, name: 'User 4' });34    service.getUsers().subscribe((users) => {35      expect(users.length).toBe(4);36    });37  });38  it('should remove a user from the list of users', () => {39    let users: User[];40    service.getUsers().subscribe((users) => {41      expect(users.length).toBe(3);42    });43    service.removeUser({ id: 2, name: 'User 2' });44    service.getUsers().subscribe((users) => {45      expect(users.length).toBe(2);46    });47  });48});

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