Discover AI-native insights at Testμ Conference‘25

How to use replaceWithMocks method in ng-mocks

Best JavaScript code snippet using ng-mocks

helper.resolve-provider.ts

...69};70// if the provider is a value, we need to go through the value and to replace all mock instances.71const replaceWithMocks = (provider: any, provide: any, mockDef: any) => {72  if (provide !== provider && mockDef && mockDef.useValue) {73    const useValue = helperMockService.replaceWithMocks(mockDef.useValue);74    return useValue === mockDef.useValue75      ? mockDef76      : {77          ...mockDef,78          useValue,79        };80  }81  return mockDef;82};83const createPredefinedMockProvider = (provider: any, provide: any): any => {84  // Then we check decisions whether we should keep or replace a provider.85  if (ngMocksUniverse.builtProviders.has(provide)) {86    const mockDef = ngMocksUniverse.builtProviders.get(provide);87    if (mockDef === provide) {88      return provider;89    }90    return mockDef;91  }92  return undefined;93};94const createMockProvider = (provider: any, provide: any, change: () => void) => {95  let mockDef = createPredefinedMockProvider(provider, provide);96  if (!mockDef && ngMocksUniverse.flags.has('skipMock') && ngMocksUniverse.getResolution(provide) !== 'mock') {97    ngMocksUniverse.config.get('ngMocksDepsSkip')?.add(provide);98    mockDef = provider;99  }100  if (!mockDef) {101    mockDef = mockProvider(provider);102  }103  mockDef = replaceWithMocks(provider, provide, mockDef);104  if (!areEqualDefs(mockDef, provider, provide)) {105    change();106  }107  // Touching only when we really provide a value.108  if (mockDef) {109    ngMocksUniverse.touches.add(provide);110  }111  return mockDef;112};113const areEqualDefs = (mockDef: any, provider: any, provide: any): boolean => {114  let providerDiffers = false;115  let defDiffers = !mockDef;116  if (provider && mockDef && !defDiffers) {117    defDiffers = anyDiffers(provider, mockDef, 'provide', 'useValue', 'useClass', 'useExisting', 'useFactory', 'deps');...

helper.mock-service.ts

Source: helper.mock-service.ts

1import funcGetGlobal from '../common/func.get-global';2import helperCreateClone from './helper.create-clone';3import helperCreateMockFromPrototype from './helper.create-mock-from-prototype';4import helperDefinePropertyDescriptor from './helper.define-property-descriptor';5import helperExtractMethodsFromPrototype from './helper.extract-methods-from-prototype';6import helperExtractPropertiesFromPrototype from './helper.extract-properties-from-prototype';7import helperExtractPropertyDescriptor from './helper.extract-property-descriptor';8import helperMock from './helper.mock';9import helperMockFunction from './helper.mock-function';10import helperReplaceWithMocks from './helper.replace-with-mocks';11import helperResolveProvider from './helper.resolve-provider';12import helperUseFactory from './helper.use-factory';13import { CustomMockFunction } from './types';14// We need a single pointer to the object among all environments.15funcGetGlobal().ngMockshelperMockService = funcGetGlobal().ngMockshelperMockService || {16  mockFunction: helperMockFunction,17  registerMockFunction: (func: CustomMockFunction | undefined) => {18    funcGetGlobal().ngMockshelperMockService.mockFunction.customMockFunction = func;19  },20  createClone: helperCreateClone,21  createMockFromPrototype: helperCreateMockFromPrototype,22  definePropertyDescriptor: helperDefinePropertyDescriptor,23  extractMethodsFromPrototype: helperExtractMethodsFromPrototype,24  extractPropertiesFromPrototype: helperExtractPropertiesFromPrototype,25  extractPropertyDescriptor: helperExtractPropertyDescriptor,26  mock: helperMock,27  replaceWithMocks: helperReplaceWithMocks,28  resolveProvider: helperResolveProvider,29  useFactory: helperUseFactory,30};31export default ((): {32  createClone: typeof helperCreateClone;33  createMockFromPrototype: typeof helperCreateMockFromPrototype;34  definePropertyDescriptor: typeof helperDefinePropertyDescriptor;35  extractMethodsFromPrototype: typeof helperExtractMethodsFromPrototype;36  extractPropertiesFromPrototype: typeof helperExtractPropertiesFromPrototype;37  extractPropertyDescriptor: typeof helperExtractPropertyDescriptor;38  mock: typeof helperMock;39  mockFunction: typeof helperMockFunction;40  registerMockFunction: (func: CustomMockFunction | undefined) => void;41  replaceWithMocks: typeof helperReplaceWithMocks;42  resolveProvider: typeof helperResolveProvider;43  useFactory: typeof helperUseFactory;44} => funcGetGlobal().ngMockshelperMockService)();45export function registerMockFunction(func?: CustomMockFunction | undefined): void {46  funcGetGlobal().ngMockshelperMockService.registerMockFunction(func);...

helper.replace-with-mocks.ts

Source: helper.replace-with-mocks.ts

1import { NG_MOCKS_GUARDS } from '../common/core.tokens';2import ngMocksUniverse from '../common/ng-mocks-universe';3const handleSection = (section: any[]) => {4  const guards: any[] = [];5  for (const guard of section) {6    if (ngMocksUniverse.isProvidedDef(guard)) {7      guards.push(guard);8      continue;9    }10    if (ngMocksUniverse.isExcludedDef(NG_MOCKS_GUARDS)) {11      continue;12    }13    guards.push(guard);14  }15  return guards;16};17const handleArray = (value: any[], callback: any): [boolean, any[]] => {18  const mock = [];19  let updated = false;20  for (const valueItem of value) {21    if (ngMocksUniverse.isExcludedDef(valueItem)) {22      updated = updated || true;23      continue;24    }25    mock.push(callback(valueItem));26    updated = updated || mock[mock.length - 1] !== valueItem;27  }28  return [updated, mock];29};30const handleItemKeys = ['canActivate', 'canActivateChild', 'canDeactivate', 'canLoad'];31const handleItemGetGuards = (mock: any, section: string) =>32  Array.isArray(mock[section]) ? handleSection(mock[section]) : mock[section];33const handleItem = (value: Record<keyof any, any>, callback: any): [boolean, Record<keyof any, any>] => {34  let mock: Record<keyof any, any> = {};35  let updated = false;36  for (const key of Object.keys(value)) {37    if (ngMocksUniverse.isExcludedDef(value[key])) {38      updated = updated || true;39      continue;40    }41    mock[key] = callback(value[key]);42    updated = updated || mock[key] !== value[key];43  }44  // Removal of guards.45  for (const section of handleItemKeys) {46    const guards: any[] = handleItemGetGuards(mock, section);47    if (guards && mock[section].length !== guards.length) {48      updated = updated || true;49      mock = { ...mock, [section]: guards };50    }51  }52  return [updated, mock];53};54const replaceWithMocks = (value: any): any => {55  if (ngMocksUniverse.cacheDeclarations.has(value)) {56    return ngMocksUniverse.cacheDeclarations.get(value);57  }58  if (typeof value !== 'object') {59    return value;60  }61  let mock: any;62  let updated = false;63  if (Array.isArray(value)) {64    [updated, mock] = handleArray(value, replaceWithMocks);65  } else if (value) {66    [updated, mock] = handleItem(value, replaceWithMocks);67  }68  if (updated) {69    Object.setPrototypeOf(mock, Object.getPrototypeOf(value));70    return mock;71  }72  return value;73};...

Using AI Code Generation

1import { replaceWithMocks } from 'ng-mocks';2import { MockBuilder } from 'ng-mocks';3import { MockRender } from 'ng-mocks';4import { MyComponent } from './my.component';5import { MyModule } from './my.module';6import { MyService } from './my.service';7describe('MyComponent', () => {8  beforeEach(() => {9    replaceWithMocks(MyService, {10      someMethod: () => 'mocked',11    });12    MockBuilder(MyComponent, MyModule);13  });14  it('should create', () => {15    const fixture = MockRender(MyComponent);16    expect(fixture.point.componentInstance).toBeTruthy();17  });18  it('should use mock', () => {19    const fixture = MockRender(MyComponent);20    expect(fixture.debugElement.nativeElement.textContent).toEqual('mocked');21  });22});23import { Component } from '@angular/core';24import { MyService } from './my.service';25@Component({26  template: '{{myService.someMethod()}}',27})28export class MyComponent {29  constructor(public readonly myService: MyService) {}30}31import { Injectable } from '@angular/core';32@Injectable()33export class MyService {34  public someMethod(): string {35    return 'real';36  }37}38import { NgModule } from '@angular/core';39import { MyComponent } from './my.component';40import { MyService } from './my.service';41@NgModule({42})43export class MyModule {}44import { replaceWithMocks } from 'ng-mocks';45import { MockBuilder } from 'ng-mocks';46import { MockRender } from 'ng-mocks';47import { MyComponent } from './my.component';48import { MyModule } from './my.module';49import { MyService } from './my.service';50describe('MyComponent', () => {51  beforeEach(() => {52    replaceWithMocks(MyService, {53      someMethod: () => 'mocked',54    });55    MockBuilder(MyComponent, MyModule);56  });57  it('should create', () => {58    const fixture = MockRender(MyComponent);59    expect(fixture.point.componentInstance).toBeTruthy();

Using AI Code Generation

1import { replaceWithMocks } from 'ng-mocks';2import { TestModule } from './test.module';3describe('TestComponent', () => {4  beforeEach(() => {5    replaceWithMocks(TestModule);6  });7  it('should render the component', () => {8  });9});10import { TestComponent } from './test.component';11import { NgModule } from '@angular/core';12@NgModule({13})14export class TestModule {}15import { Component } from '@angular/core';16@Component({17})18export class TestComponent {}19import { TestBed } from '@angular/core/testing';20import { TestComponent } from './test.component';21import { TestModule } from './test.module';22describe('TestComponent', () => {23  beforeEach(() => {24    TestBed.configureTestingModule({25      imports: [TestModule],26    }).compileComponents();27  });28  it('should render the component', () => {29  });30});

Using AI Code Generation

1import { replaceWithMocks } from 'ng-mocks';2replaceWithMocks(3    {4      useValue: {5        getSomething: () => 'mocked value',6      },7    },8  () => {9  },10);11import { replaceWithMocks } from 'ng-mocks';12replaceWithMocks(13    {14      useValue: {15        getSomething: () => 'mocked value',16      },17    },18  () => {19  },20);21import { replaceWithMocks } from 'ng-mocks';22replaceWithMocks(23    {24      useValue: {25        getSomething: () => 'mocked value',26      },27    },28  () => {29  },30);31import { replaceWithMocks } from 'ng-mocks';32replaceWithMocks(33    {34      useValue: {35        getSomething: () => 'mocked value',36      },37    },38  () => {39  },40);41import { replaceWithMocks } from 'ng-mocks';42replaceWithMocks(43    {44      useValue: {45        getSomething: () => 'mocked value',46      },47    },48  () => {49  },50);51import { replaceWithMocks } from 'ng-mocks';52replaceWithMocks(53    {54      useValue: {55        getSomething: () => 'mocked value',56      },57    },58  () => {59  },60);61import { replaceWithMocks } from

Using AI Code Generation

1import { replaceWithMocks } from 'ng-mocks';2describe('TestComponent', () => {3  let component: TestComponent;4  let fixture: ComponentFixture<TestComponent>;5  beforeEach(async(() => {6    TestBed.configureTestingModule({7    })8      .compileComponents();9  }));10  beforeEach(() => {11    fixture = TestBed.createComponent(TestComponent);12    component = fixture.componentInstance;13    fixture.detectChanges();14  });15  it('should create', () => {16    expect(component).toBeTruthy();17  });18  it('should return the mocked value from the service', () => {19    replaceWithMocks(TestService, {20      getValue: () => 'mocked value'21    });22    expect(component.getValue()).toEqual('mocked value');23  });24});

Blogs

Check out the latest blogs from LambdaTest on this topic:

How to increase and maintain team motivation

The best agile teams are built from people who work together as one unit, where each team member has both the technical and the personal skills to allow the team to become self-organized, cross-functional, and self-motivated. These are all big words that I hear in almost every agile project. Still, the criteria to make a fantastic agile team are practically impossible to achieve without one major factor: motivation towards a common goal.

Webinar: Move Forward With An Effective Test Automation Strategy [Voices of Community]

The key to successful test automation is to focus on tasks that maximize the return on investment (ROI), ensuring that you are automating the right tests and automating them in the right way. This is where test automation strategies come into play.

Developers and Bugs – why are they happening again and again?

Entering the world of testers, one question started to formulate in my mind: “what is the reason that bugs happen?”.

How To Use CSS Contain Property To Optimize Browsers

How To Choose The Best JavaScript Unit Testing Frameworks

JavaScript is one of the most widely used programming languages. This popularity invites a lot of JavaScript development and testing frameworks to ease the process of working with it. As a result, numerous JavaScript testing frameworks can be used to perform unit testing.

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.