KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta 
How to use ngAfterViewInit method in ng-mocks
Best JavaScript code snippet using ng-mocks
EditPhotos.ts
Source:EditPhotos.ts 
...49 this.loading = this.loadingCtrl.create({50 content: 'Uploading...',51 });52 this.loading.present();53 this.ngAfterViewInit();54 this.dataURL = this.dataURL.replace(/^data:image\/[a-z]+;base64,/, "");55 var dat = 'userId=frameoo&photo=' + this.dataURL;56 this.http.post(url, dat, options).subscribe(res => this.json = res.json());57 console.log('asd' + JSON.stringify(this.json));58 this.loading.dismissAll();59 this.moveTeam();60 }61 ngAfterViewInit() { // wait for the view to init before using the element62 let context: CanvasRenderingContext2D = this.myCanvas.nativeElement.getContext("2d");63 // happy drawing from here on64 // context.fillStyle = 'blue';65 // context.fillRect(10, 10, 150, 150);66 let base_image = new Image();67 let frameoo = new Image();68 frameoo.src = this.frame;69 base_image.onload = function(){70 context.drawImage(base_image, 0, 0, 400, 400);71 context.drawImage(frameoo, 0, 0);72 };73 base_image.src = this.base64Image;74 this.dataURL = this.myCanvas.nativeElement.toDataURL();75 //this.presentToast(JSON.stringify(this.json));76 //this.presentToast(this.base64Image);77 }78 selectFrame(frame:string){79 if(frame==='frame01'){80 this.frame = "assets/img/frame01.png";81 this.ngAfterViewInit();82 }83 else if(frame==='frame02'){84 this.frame = "assets/img/frame02.png";85 this.ngAfterViewInit();86 }87 else if(frame==='frame03'){88 this.frame = "assets/img/frame03.png";89 this.ngAfterViewInit();90 }91 else if(frame==='frame04'){92 this.frame = "assets/img/frame04.png";93 this.ngAfterViewInit();94 }95 else if(frame==='frame05'){96 this.frame = "assets/img/frame05.png";97 this.ngAfterViewInit();98 }99 else if(frame==='frame06'){100 this.frame = "assets/img/frame06.png";101 this.ngAfterViewInit();102 }103 else if(frame==='frame07'){104 this.frame = "assets/img/frame07.png";105 this.ngAfterViewInit();106 }107 else if(frame==='frame08'){108 this.frame = "assets/img/frame08.png";109 this.ngAfterViewInit();110 }111 else if(frame==='frame09'){112 this.frame = "assets/img/frame09.png";113 this.ngAfterViewInit();114 }115 else if(frame==='frame10'){116 this.frame = "assets/img/frame10.png";117 this.ngAfterViewInit();118 }119 }120 presentToast(text) {121 let toast = this.toastCtrl.create({122 message: text,123 duration: 5000,124 position: 'top'125 });126 toast.present();127 }128 moveTeam(){129 this.navi.setRoot(TeammatesPhotosPage);130 }131}
PhotoEditor.ts
Source:PhotoEditor.ts
...41 this.loading = this.loadingCtrl.create({42 content: 'Uploading...',43 });44 this.loading.present();45 this.ngAfterViewInit();46 this.dataUrl = this.dataUrl.replace(/^data:image\/[a-z]+;base64,/, "");47 var dataPost = 'userId=frameoo&photo=' + this.dataUrl;48 this.http.post(url, dataPost,options).subscribe(res => this.json = res.json());49 console.log('ceo' + JSON.stringify(this.json));50 this.loading.dismissAll();51 this.movePage();52 }53 ngAfterViewInit() { // wait for the view to init before using the element54 let context: CanvasRenderingContext2D = this.canvasContent.nativeElement.getContext("2d");55 let base_image = new Image();56 let frameoo = new Image();57 frameoo.src = this.frame;58 base_image.onload = function(){59 context.drawImage(base_image, 0, 0, 400, 400);60 context.drawImage(frameoo, 0, 0);61 };62 base_image.src = this.base64Image;63 this.dataUrl = this.canvasContent.nativeElement.toDataURL();64 }65 selectFrame(frame:string){66 if(frame==='frame01'){67 this.frame = "assets/image/frame01.png";68 this.ngAfterViewInit();69 }70 else if(frame==='frame02'){71 this.frame = "assets/image/frame02.png";72 this.ngAfterViewInit();73 }74 else if(frame==='frame03'){75 this.frame = "assets/image/frame03.png";76 this.ngAfterViewInit();77 }78 else if(frame==='frame04'){79 this.frame = "assets/image/frame04.png";80 this.ngAfterViewInit();81 }82 else if(frame==='frame05'){83 this.frame = "assets/image/frame05.png";84 this.ngAfterViewInit();85 }86 else if(frame==='frame06'){87 this.frame = "assets/image/frame06.png";88 this.ngAfterViewInit();89 }90 else if(frame==='frame07'){91 this.frame = "assets/image/frame07.png";92 this.ngAfterViewInit();93 }94 else if(frame==='frame08'){95 this.frame = "assets/image/frame08.png";96 this.ngAfterViewInit();97 }98 else if(frame==='frame09'){99 this.frame = "assets/image/frame09.png";100 this.ngAfterViewInit();101 }102 else if(frame==='frame10'){103 this.frame = "assets/image/frame10.png";104 this.ngAfterViewInit();105 }106 }107 movePage(){108 this.navig.setRoot(TeammatesPhotosPage);109 }...
col.component.spec.ts
Source:col.component.spec.ts
...20 expect(component).toBeTruthy();21 });22 it('lg col should have class mui-col-lg-4', () => {23 component.lg = 4;24 component.ngAfterViewInit();25 fixture.detectChanges();26 expect(col).toHaveClass('mui-col-lg-4');27 });28 it('md col should have class mui-col-md-6', () => {29 component.md = 6;30 component.ngAfterViewInit();31 fixture.detectChanges();32 expect(col).toHaveClass('mui-col-md-6');33 });34 it('sm col should have class mui-col-sm-8', () => {35 component.sm = 8;36 component.ngAfterViewInit();37 fixture.detectChanges();38 expect(col).toHaveClass('mui-col-sm-8');39 });40 it('xl col should have class mui-col-xl-2', () => {41 component.xl = 2;42 component.ngAfterViewInit();43 fixture.detectChanges();44 expect(col).toHaveClass('mui-col-xl-2');45 });46 it('xs col should have class mui-col-xs-12', () => {47 component.xs = 12;48 component.ngAfterViewInit();49 fixture.detectChanges();50 expect(col).toHaveClass('mui-col-xs-12');51 });52 it('lg-offset col should have class mui-col-lg-offset-1', () => {53 component['lg-offset'] = 1;54 component.ngAfterViewInit();55 fixture.detectChanges();56 expect(col).toHaveClass('mui-col-lg-offset-1');57 });58 it('md-offset col should have class mui-col-md-offset-2', () => {59 component['md-offset'] = 2;60 component.ngAfterViewInit();61 fixture.detectChanges();62 expect(col).toHaveClass('mui-col-md-offset-2');63 });64 it('sm-offset col should have class mui-col-sm-offset-3', () => {65 component['sm-offset'] = 3;66 component.ngAfterViewInit();67 fixture.detectChanges();68 expect(col).toHaveClass('mui-col-sm-offset-3');69 });70 it('xl-offset col should have class mui-col-xl-offset-4', () => {71 component['xl-offset'] = 4;72 component.ngAfterViewInit();73 fixture.detectChanges();74 expect(col).toHaveClass('mui-col-xl-offset-4');75 });76 it('xs-offset col should have class mui-col-xs-offset-5', () => {77 component['xs-offset'] = 5;78 component.ngAfterViewInit();79 fixture.detectChanges();80 expect(col).toHaveClass('mui-col-xs-offset-5');81 });...
app.component.ts
Source:app.component.ts
...18 console.log('ngOnInit hello 1:', this.hello1);19 console.log('ngOnInit hello 2:', this.hello2);20 console.log('\n');21 }22 ngAfterViewInit() {23 console.log('ngAfterViewInit hello 1:', this.hello1);24 console.log('ngAfterViewInit hello 2:', this.hello2);25 console.log('ngAfterViewInit hello 2:', this.hello2.name);26 this.hello2.printName();27 console.log('ngAfterViewInit hello 3:', this.hello3.nativeElement);28 console.log('ngAfterViewInit hello 3:', (this.hello3.nativeElement as HTMLElement).textContent);29 console.log('ngAfterViewInit hello 4:', this.hello4.element.nativeElement);30 console.log('\n');31 console.log('ngAfterViewInit para:', this.para);32 console.log('\n');33 }...
Using AI Code Generation
1import { Component, ViewChild } from '@angular/core';2import { ComponentFixture, TestBed } from '@angular/core/testing';3import { MockBuilder, MockRender, ngMocks } from 'ng-mocks';4@Component({5})6export class TestComponent {7 @ViewChild('myDiv', { static: true }) myDiv: any;8}9describe('TestComponent', () => {10 let component: TestComponent;11 let fixture: ComponentFixture<TestComponent>;12 beforeEach(() => MockBuilder(TestComponent));13 beforeEach(() => {14 fixture = MockRender(TestComponent);15 component = fixture.componentInstance;16 });17 it('should create', () => {18 expect(component).toBeTruthy();19 expect(component.myDiv).toBeTruthy();20 });21 it('should call ngAfterViewInit', () => {22 fixture.detectChanges();23 expect(ngMocks.formatText(fixture)).toContain('app-test');24 });25});26I am trying to test a component that uses ngAfterViewInit() method. I am using ng-mocks library to mock the component. I am able to use ngAfterViewInit() method in my component but not in my test case. I am getting the below error:27import { Component, ViewChild } from '@angular/core';28import { ComponentFixture, TestBed } from '@angular/core/testing';29import { MockBuilder, MockRender, ngMocks } from 'ng-mocks';30@Component({31})32export class TestComponent {33 @ViewChild('myDiv', { static: true }) myDiv: any;34 ngAfterViewInit() {35 console.log('ngAfterViewInit');36 }37}38describe('TestComponent', () => {39 let component: TestComponent;40 let fixture: ComponentFixture<TestComponent>;41 beforeEach(() => MockBuilder(TestComponent));42 beforeEach(() => {43 fixture = MockRender(TestComponent);44 component = ngMocks.get(fixture.debugElement, TestComponent);45 });46 it('should create', () => {
Using AI Code Generation
1import {AfterViewInit, Component} from '@angular/core';2import {MockBuilder, MockRender} from 'ng-mocks';3import {TestComponent} from './test.component';4describe('TestComponent', () => {5 beforeEach(() => MockBuilder(TestComponent));6 it('should create', () => {7 const fixture = MockRender(TestComponent);8 expect(fixture.point.componentInstance).toBeDefined();9 });10});11import {AfterViewInit, Component} from '@angular/core';12@Component({13})14export class TestComponent implements AfterViewInit {15 constructor() { }16 ngAfterViewInit(): void {17 console.log('ngAfterViewInit');18 }19}
Using AI Code Generation
1import {AfterViewInit, Component} from '@angular/core';2import {ngAfterViewInit} from 'ng-mocks';3@Component({4})5export class TestComponent implements AfterViewInit {6 ngAfterViewInit() {}7}8describe('TestComponent', () => {9 it('should call ngAfterViewInit', () => {10 const fixture = MockRender(TestComponent);11 const component = ngAfterViewInit(fixture.debugElement);12 expect(component).toBeDefined();13 });14});15import {TestComponent} from './test';16describe('TestComponent', () => {17 it('should create', () => {18 const fixture = MockRender(TestComponent);19 expect(fixture.point.componentInstance).toBeDefined();20 });21});22import {TestComponent} from './test';23describe('TestComponent', () => {24 it('should create', () => {25 const fixture = MockRender(TestComponent);26 expect(fixture.point.componentInstance).toBeDefined();27 });28});29import {TestComponent} from './test';30describe('TestComponent', () => {31 it('should create', () => {32 const fixture = MockRender(TestComponent);33 expect(fixture.point.componentInstance).toBeDefined();34 });35});36import {TestComponent} from './test';37describe('TestComponent', () => {38 it('should create', () => {39 const fixture = MockRender(TestComponent);40 expect(fixture.point.componentInstance).toBeDefined();41 });42});43import {TestComponent} from './test';44describe('TestComponent', () => {45 it('should create', () => {46 const fixture = MockRender(TestComponent);47 expect(fixture.point.componentInstance).toBeDefined();48 });49});50import {TestComponent} from './test';51describe('TestComponent', () => {52 it('should create', () => {53 const fixture = MockRender(TestComponent);54 expect(fixture.point.componentInstance).toBeDefined();55 });56});57import {TestComponent} from './test';58describe('TestComponent', () => {59 it('should create', () => {60 const fixture = MockRender(TestComponent);61 expect(fixture.point.componentInstance).toBeDefined();62 });63});64import {TestComponent} from './test';65describe('TestComponent', ()
Using AI Code Generation
1import {AfterViewInit, Component, NgModule} from '@angular/core';2import {MockBuilder, MockRender, ngMocks} from 'ng-mocks';3@Component({4})5class AppComponent implements AfterViewInit {6 public test = false;7 public ngAfterViewInit(): void {8 this.test = true;9 }10}11@NgModule({12})13class AppModule {}14describe('AppComponent', () => {15 beforeEach(() => MockBuilder(AppComponent, AppModule));16 it('should create the app', () => {17 const fixture = MockRender(AppComponent);18 const component = fixture.point.componentInstance;19 ngMocks.stubMethod(component, 'ngAfterViewInit');20 expect(component).toBeTruthy();21 });22});23I had the same issue and it was solved by using ngMocks.stubMethod(component, 'ngAfterViewInit');
Using AI Code Generation
1import { Component, ViewChild } from '@angular/core';2import { NgAfterViewInit } from '@angular/core';3import { ComponentFixture, TestBed } from '@angular/core/testing';4import { MockComponent } from 'ng-mocks';5@Component({6})7class ChildComponent {8 public ngAfterViewInit(): void {9 console.log('child');10 }11}12@Component({13})14class ParentComponent implements NgAfterViewInit {15 @ViewChild(ChildComponent)16 public child: ChildComponent;17 public ngAfterViewInit(): void {18 console.log('parent');19 }20}21describe('ParentComponent', () => {22 let component: ParentComponent;23 let fixture: ComponentFixture<ParentComponent>;24 beforeEach(() => {25 TestBed.configureTestingModule({26 declarations: [ParentComponent, MockComponent(ChildComponent)],27 }).compileComponents();28 });29 it('should create', () => {30 fixture = TestBed.createComponent(ParentComponent);31 component = fixture.componentInstance;32 fixture.detectChanges();33 expect(component).toBeTruthy();34 });35});
Using AI Code Generation
1import { ngMocks } from 'ng-mocks';2import { TestBed } from '@angular/core/testing';3import { Component, ViewChild, ElementRef, AfterViewInit } from '@angular/core';4import { By } from '@angular/platform-browser';5@Component({6})7class TestComponent implements AfterViewInit {8 @ViewChild('divElement') divElement: ElementRef;9 ngAfterViewInit() {10 console.log(this.divElement.nativeElement.innerHTML);11 }12}13describe('TestComponent', () => {14 it('should create', () => {15 const fixture = TestBed.configureTestingModule({16 }).createComponent(TestComponent);17 fixture.detectChanges();18 expect(ngMocks.formatText(fixture.nativeElement)).toEqual('Test');19 });20});
Using AI Code Generation
1describe('AppComponent', () => {2 beforeEach(async(() => {3 TestBed.configureTestingModule({4 imports: [NgxChartsModule],5 }).compileComponents();6 }));7 it('should create the app', async(() => {8 const fixture = TestBed.createComponent(AppComponent);9 const app = fixture.debugElement.componentInstance;10 expect(app).toBeTruthy();11 }));12 it(`should have as title 'app'`, async(() => {13 const fixture = TestBed.createComponent(AppComponent);14 const app = fixture.debugElement.componentInstance;15 expect(app.title).toEqual('app');16 }));17 it('should render title in a h1 tag', async(() => {18 const fixture = TestBed.createComponent(AppComponent);19 fixture.detectChanges();20 const compiled = fixture.debugElement.nativeElement;21 expect(compiled.querySelector('h1').textContent).toContain(22 );23 }));24 it('should call ngAfterViewInit', async(() => {25 const fixture = TestBed.createComponent(AppComponent);26 fixture.detectChanges();27 const app = fixture.debugElement.componentInstance;28 const spy = spyOn(app, 'ngAfterViewInit').and.callThrough();29 app.ngAfterViewInit();30 expect(spy).toHaveBeenCalled();31 }));32});33import { Component, OnInit, ViewChild } from '@angular/core';34import { NgxChartsModule } from '@swimlane/ngx-charts';35import { single } from './data';36@Component({37})38export class AppComponent implements OnInit {39 title = 'app';40 single: any[];41 view: any[] = [700, 400];42 showXAxis = true;43 showYAxis = true;44 gradient = false;45 showLegend = true;46 showXAxisLabel = true;47 xAxisLabel = 'Country';48 showYAxisLabel = true;49 yAxisLabel = 'Population';50 colorScheme = {51 };52 @ViewChild('chart', { static: false }) chart;53 constructor() {54 Object.assign(this, { single });55 }56 ngOnInit() {}57 onSelect(event) {
Using AI Code Generation
1ngAfterViewInit() {2 this.cdr.detectChanges();3 }4it('should create', () => {5 const fixture = MockRender(TestComponent);6 fixture.detectChanges();7 expect(fixture.point.componentInstance).toBeDefined();8 });9it('should create', () => {10 const fixture = MockRender(TestComponent);11 fixture.detectChanges();12 expect(fixture.point.componentInstance).toBeDefined();13 });14it('should create', () => {15 const fixture = MockRender(TestComponent);16 fixture.detectChanges();17 expect(fixture.point.componentInstance).toBeDefined();18 });19it('should create', () => {20 const fixture = MockRender(TestComponent);21 fixture.detectChanges();22 expect(fixture.point.componentInstance).toBeDefined();23 });24it('should create', () => {25 const fixture = MockRender(TestComponent);26 fixture.detectChanges();27 expect(fixture.point.componentInstance).toBeDefined();28 });29it('should create', () => {30 const fixture = MockRender(TestComponent);31 fixture.detectChanges();32 expect(fixture.point.componentInstance).toBeDefined();33 });34it('should create', () => {35 const fixture = MockRender(TestComponent);36 fixture.detectChanges();37 expect(fixture.point.componentInstance).toBeDefined();38 });39it('should create',
Using AI Code Generation
1describe('mocks', () => {2 it('should work', () => {3 const fixture = MockRender(`4 `);5 const component = fixture.point.componentInstance;6 component.ngAfterViewInit();7 });8});9describe('mocks', () => {10 it('should work', () => {11 const fixture = MockRender(`12 `);13 const component = fixture.point.componentInstance;14 component.ngAfterViewInit();15 });16});17describe('mocks', () => {18 it('should work', () => {19 const fixture = MockRender(`20 `);21 const component = fixture.point.componentInstance;22 component.ngAfterViewInit();23 });24});25describe('mocks', () => {26 it('should work', () => {27 const fixture = MockRender(`28 `);29 const component = fixture.point.componentInstance;30 component.ngAfterViewInit();31 });32});33describe('mocks', () => {34 it('should work', () => {35 const fixture = MockRender(`36 `);37 const component = fixture.point.componentInstance;38 component.ngAfterViewInit();39 });40});41describe('mocks', () => {42 it('should work', () => {43 const fixture = MockRender(`44 `);45 const component = fixture.point.componentInstance;46 component.ngAfterViewInit();47 });48});49describe('mocks', () => {50 it('should work', () => {51 const fixture = MockRender(`52 `);53 const component = fixture.point.componentInstance;54 component.ngAfterViewInit();55 });56});
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.
LambdaTest Learning Hubs:
- JUnit Tutorial
- TestNG Tutorial
- Webdriver Tutorial
- WebDriverIO Tutorial
- Protractor Tutorial
- Selenium 4 Tutorial
- Jenkins Tutorial
- NUnit Tutorial
- Jest Tutorial
- Playwright Tutorial
- Cypress Tutorial
- PyTest Tutorial
YouTube
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Run ng-mocks automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
