How to use flushTestBed method in ng-mocks

Best JavaScript code snippet using ng-mocks

mock-render-factory.ts

Source:mock-render-factory.ts

...80const fixtureMessage = [81  'Forgot to flush TestBed?',82  'MockRender cannot be used without a reset after TestBed.get / TestBed.inject / TestBed.createComponent and another MockRender in the same test.',83  'If you want to mock a service before rendering, consider usage of MockRenderFactory or MockInstance.',84  'To flush TestBed, add a call of ngMocks.flushTestBed() before the call of MockRender, or pass `reset: true` to MockRender options.',85].join(' ');86const handleFixtureError = (e: any) => {87  const error = new Error(fixtureMessage);88  coreDefineProperty(error, 'parent', e);89  throw error;90};91const flushTestBed = (flags: Record<string, any>): void => {92  const globalFlags = ngMocksUniverse.global.get('flags');93  const testBed: any = getTestBed();94  if (flags.reset || (!testBed._instantiated && !testBed._testModuleRef)) {95    ngMocks.flushTestBed();96  } else if (globalFlags.onTestBedFlushNeed !== 'throw' && (testBed._instantiated || testBed._testModuleRef)) {97    if (globalFlags.onTestBedFlushNeed === 'warn') {98      console.warn(fixtureMessage);99    }100    ngMocks.flushTestBed();101  }102};103const generateFactoryInstall =104  (ctor: AnyType<any> & { providers?: AnyType<any> }, options: IMockRenderFactoryOptions) => () => {105    const testBed: TestBed & {106      _compiler?: {107        declarations?: Array<AnyType<any>>;108      };109      _declarations?: Array<AnyType<any>>;110      declarations?: Array<AnyType<any>>;111    } = getTestBed();112    // istanbul ignore next113    const existing = testBed._compiler?.declarations || testBed.declarations || testBed._declarations;114    if (!existing || existing.indexOf(ctor) === -1) {115      flushTestBed(options);116      try {117        const declarations: Array<AnyType<any>> = [];118        if (ctor.providers) {119          declarations.push(ctor.providers);120        }121        declarations.push(ctor);122        TestBed.configureTestingModule({123          declarations,124        });125      } catch (error) {126        handleFixtureError(error);127      }128    }129  };...

test.override.spec.ts

Source:test.override.spec.ts

...35    it('renders Target1Component', () => {36      expect(37        MockRender('<target2></target2>').nativeElement.innerHTML,38      ).toContain('<target2></target2>');39      ngMocks.flushTestBed();40      expect(41        MockRender('<target1></target1>').nativeElement.innerHTML,42      ).toContain('<target1>target1</target1>');43    });44  });45  describe('keeping Target2Component', () => {46    beforeEach(async () => {47      ngMocks.globalKeep(Target2Component);48      return TestBed.configureTestingModule({49        imports: [MockModule(TargetModule)],50      }).compileComponents();51    });52    it('renders Target2Component too', () => {53      expect(54        MockRender('<target2></target2>').nativeElement.innerHTML,55      ).toContain('<target2>target2</target2>');56      ngMocks.flushTestBed();57      expect(58        MockRender('<target1></target1>').nativeElement.innerHTML,59      ).toContain('<target1>target1</target1>');60    });61  });...

Using AI Code Generation

1import { flushTestBed } from 'ng-mocks';2import { TestBed } from '@angular/core/testing';3import { MockBuilder } from 'ng-mocks';4import { MockRender } from 'ng-mocks';5import { MyComponent } from './components/my.component';6describe('MyComponent', () => {7  afterEach(() => flushTestBed());8  it('should render', () => {9    MockBuilder(MyComponent);10    const fixture = MockRender(MyComponent);11    expect(fixture.nativeElement.innerHTML).toContain('Hello World');12  });13});14    ✓ should render (6ms)15      at Object.<anonymous> (node_modules/ng-mocks/lib/mock-builder/mock-builder.ts:34:16)16      at Object.<anonymous> (node_modules/ng-mocks/lib/mock-builder/mock-builder.ts:34:16)

Using AI Code Generation

1import { flushTestBed } from 'ng-mocks';2import { TestBed } from '@angular/core/testing';3import { AppComponent } from './app.component';4describe('AppComponent', () => {5  beforeEach(async () => {6    await TestBed.configureTestingModule({7    }).compileComponents();8  });9  afterEach(() => {10    flushTestBed();11  });12  it('should create the app', () => {13    const fixture = TestBed.createComponent(AppComponent);14    const app = fixture.componentInstance;15    expect(app).toBeTruthy();16  });17  it(`should have as title 'my-app'`, () => {18    const fixture = TestBed.createComponent(AppComponent);19    const app = fixture.componentInstance;20    expect(app.title).toEqual('my-app');21  });22  it('should render title', () => {23    const fixture = TestBed.createComponent(AppComponent);24    fixture.detectChanges();25    const compiled = fixture.nativeElement;26    expect(compiled.querySelector('.content span').textContent).toContain(27    );28  });29});30import { MockBuilder, MockRender } from 'ng-mocks';31import { AppComponent } from './app.component';32describe('AppComponent', () => {33  beforeEach(() => MockBuilder(AppComponent));34  it('should create the app', () => {35    const fixture = MockRender(AppComponent);36    const app = fixture.point.componentInstance;37    expect(app).toBeTruthy();38  });39  it(`should have as title 'my-app'`, () => {40    const fixture = MockRender(AppComponent);41    const app = fixture.point.componentInstance;42    expect(app.title).toEqual('my-app');43  });44  it('should render title', () => {45    const fixture = MockRender(AppComponent);46    fixture.detectChanges();47    const compiled = fixture.point.nativeElement;48    expect(compiled.querySelector('.content span').textContent).toContain(49    );50  });51});52import { MockBuilder, MockRender } from 'ng-mocks';53import { AppComponent } from './app.component';54describe('AppComponent', () => {55  beforeEach(() => MockBuilder(AppComponent));56  it('should create the app', () => {57    const fixture = MockRender(AppComponent);

Using AI Code Generation

1import { flushTestBed } from 'ng-mocks';2import { TestBed } from '@angular/core/testing';3describe('TestBed', () => {4  beforeEach(() => {5    TestBed.configureTestingModule({6      imports: [SomeModule],7    });8  });9  afterEach(() => {10    flushTestBed();11  });12  it('should create the app', () => {13    const fixture = TestBed.createComponent(SomeComponent);14    const app = fixture.debugElement.componentInstance;15    expect(app).toBeTruthy();16  });17});18import 'ng-mocks';19import '@angular/core/testing';20import { mock } from 'ts-mockito';21import { mock } from 'jest-mock-extended';

Using AI Code Generation

1import { flushTestBed } from 'ng-mocks';2import { TestBed } from '@angular/core/testing';3describe('test', () => {4  beforeEach(() => {5    TestBed.configureTestingModule({6    });7  });8  afterEach(() => {9    flushTestBed();10  });11  it('should work', () => {12    const fixture = TestBed.createComponent(TestComponent);13    expect(fixture).toBeDefined();14  });15});16import { Component } from '@angular/core';17@Component({18})19export class TestComponent {}20import { TestBed } from '@angular/core/testing';21import { MockBuilder, MockRender } from 'ng-mocks';22import { TestComponent } from './test.component';23describe('TestComponent', () => {24  beforeEach(() => MockBuilder(TestComponent));25  it('should work', () => {26    const fixture = MockRender(TestComponent);27    expect(fixture).toBeDefined();28  });29});

Using AI Code Generation

1import { flushTestBed } from 'ng-mocks';2describe('MyComponent', () => {3  beforeEach(() => {4    TestBed.configureTestingModule({5      imports: [MyModule]6    });7  });8  afterEach(() => {9    flushTestBed();10  });11  it('should create', () => {12    const fixture = TestBed.createComponent(MyComponent);13    const component = fixture.componentInstance;14    expect(component).toBeTruthy();15  });16});17import { flushTestBed } from 'ng-mocks';18import 'zone.js/dist/zone-testing';19import { getTestBed } from '@angular/core/testing';20import { BrowserDynamicTestingModule, platformBrowserDynamicTesting } from '@angular/platform-browser-dynamic/testing';21getTestBed().initTestEnvironment(22  platformBrowserDynamicTesting()23);24afterAll(() => {25  flushTestBed();26});27"architect": {28  "test": {29    "options": {30    }31  }32}33const { flushTestBed } = require('ng-mocks');34module.exports = function (config) {35  config.set({36      require('karma-jasmine'),37      require('karma-chrome-launcher'),38      require('karma-jasmine-html-reporter'),39      require('karma-coverage-istanbul-reporter'),40      require('@angular-devkit/build-angular/plugins/karma')41    client: {

Using AI Code Generation

1import { flushTestBed } from 'ng-mocks';2beforeEach(() => {3  TestBed.configureTestingModule({4      {5      },6  });7  TestBed.compileComponents();8});9afterEach(() => {10  flushTestBed();11});12import { flushTestBed } from 'ng-mocks';13describe('AppComponent', () => {14  beforeEach(() => {15    TestBed.configureTestingModule({16        {17        },18    });19    TestBed.compileComponents();20  });21  afterEach(() => {22    flushTestBed();23  });24});

Using AI Code Generation

1import { flushTestBed } from 'ng-mocks';2import { TestBed } from '@angular/core/testing';3describe('TestBed', () => {4  it('should reset TestBed', () => {5    TestBed.configureTestingModule({declarations: [TestComponent]});6    const fixture = TestBed.createComponent(TestComponent);7    fixture.detectChanges();8    expect(fixture).not.toBeNull();9    flushTestBed();10    expect(() => TestBed.createComponent(TestComponent)).toThrow();11  });12});13The flushTestBed() method is used in the ngAfterViewInit() method of the component. It is used

Using AI Code Generation

1import { TestBed } from '@angular/core/testing';2import { createComponentFactory, Spectator } from '@ngneat/spectator';3import { TestComponent } from './test.component';4describe('TestComponent', () => {5  let spectator: Spectator<TestComponent>;6  const createComponent = createComponentFactory({7  });8  beforeEach(() => {9    spectator = createComponent();10  });11  it('should create', () => {12    expect(spectator.component).toBeTruthy();13  });14  afterEach(() => {15    TestBed.resetTestingModule();16  });17});

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