Best JavaScript code snippet using ng-mocks
lifcycle-hooks.spec.ts
Source:lifcycle-hooks.spec.ts
1import { Component } from '@angular/core';2import { TestBed } from '@angular/core/testing';3import { Logger } from '../../../src/lifecycle/app/util/logger';4import { FlatComponent } from './components/flat.component';5import { FirstLevelComponent } from './components/first-level.component';6import { SecondLevelComponent } from './components/second-level.component';7import { ThirdLevelComponent } from './components/third-level.component';8describe('Lifecycle hooks - ', () => {9 class MockLogger {10 private cycles: Array<string> = [];11 log(text: string): void {12 this.cycles.push(text);13 }14 print(): Array<string> {15 return this.cycles;16 }17 clear(): void {18 this.cycles = [];19 }20 }21 let mockLogger = new MockLogger();22 describe('Flat, one level component', () => {23 beforeEach(() => {24 TestBed25 .configureTestingModule({26 imports: [],27 declarations: [28 FlatComponent29 ],30 providers: [31 {32 provide: Logger, useValue: mockLogger33 }34 ]35 });36 });37 it('should invoke lifecycle hooks - without OnChanges', () => {38 // given39 const expectedCycles = [40 'ngOnInit',41 'ngDoCheck',42 'ngAfterContentInit',43 'ngAfterContentChecked',44 'ngAfterViewInit',45 'ngAfterViewChecked',46 'ngOnDestroy'47 ];48 TestBed.overrideTemplate(FlatComponent, `<p>Level one Component</p>`);49 const fixture = TestBed.createComponent(FlatComponent);50 // when51 fixture.detectChanges();52 fixture.destroy();53 // then54 expect(mockLogger.print()).toEqual(expectedCycles);55 });56 });57 /**58 * OnChanges Lifecycle Hook is invoked only when component has "input" and that property has a value.59 */60 describe('Component with input should invoke all lifecycle hooks -', () => {61 @Component({62 selector: 'test',63 template: `64 <ct-flat [input]="'value'"></ct-flat>`65 })66 class TestComponent {67 }68 beforeEach(() => {69 mockLogger.clear();70 TestBed71 .configureTestingModule({72 imports: [],73 declarations: [74 TestComponent,75 FlatComponent76 ],77 providers: [{78 provide: Logger, useValue: mockLogger79 }]80 });81 });82 it('should fire OnChanges', () => {83 // given84 const expectedCycles = [85 'ngOnChanges',86 'ngOnInit',87 'ngDoCheck',88 'ngAfterContentInit',89 'ngAfterContentChecked',90 'ngAfterViewInit',91 'ngAfterViewChecked',92 'ngOnDestroy'93 ];94 const fixture = TestBed.createComponent(TestComponent);95 // when96 fixture.detectChanges();97 fixture.destroy();98 // then99 expect(mockLogger.print()).toEqual(expectedCycles);100 })101 });102 describe('Simple Two level components tree -', () => {103 beforeEach(() => {104 mockLogger.clear();105 TestBed106 .configureTestingModule({107 imports: [],108 declarations: [109 FirstLevelComponent,110 SecondLevelComponent111 ],112 providers: [{113 provide: Logger, useValue: mockLogger114 }]115 });116 });117 /**118 *119 * <ct-first-level>120 * <ct-second-level></ct-second-level>121 * </ct-first-level>122 *123 */124 it('components does not have content', () => {125 // given126 const expectedCycles = [127 'First level - ngOnInit',128 'First level - ngDoCheck',129 'First level - ngAfterContentInit',130 'First level - ngAfterContentChecked',131 'Second level - ngOnInit',132 'Second level - ngDoCheck',133 'Second level - ngAfterContentInit',134 'Second level - ngAfterContentChecked',135 'Second level - ngAfterViewInit',136 'Second level - ngAfterViewChecked',137 'First level - ngAfterViewInit',138 'First level - ngAfterViewChecked',139 'Second level - ngOnDestroy',140 'First level - ngOnDestroy'141 ];142 const fixture = TestBed.createComponent(FirstLevelComponent);143 // when144 fixture.detectChanges();145 fixture.destroy();146 // then147 expect(mockLogger.print()).toEqual(expectedCycles);148 });149 it('Second level component has input', () => {150 // given151 const expectedCycles = [152 'First level - ngOnInit',153 'First level - ngDoCheck',154 'First level - ngAfterContentInit',155 'First level - ngAfterContentChecked',156 'Second level - ngOnChanges',157 'Second level - ngOnInit',158 'Second level - ngDoCheck',159 'Second level - ngAfterContentInit',160 'Second level - ngAfterContentChecked',161 'Second level - ngAfterViewInit',162 'Second level - ngAfterViewChecked',163 'First level - ngAfterViewInit',164 'First level - ngAfterViewChecked',165 'Second level - ngOnDestroy',166 'First level - ngOnDestroy'167 ];168 TestBed.overrideTemplate(FirstLevelComponent, `<ct-second-level [input]="'Text'" ></ct-second-level>`);169 const fixture = TestBed.createComponent(FirstLevelComponent);170 // when171 fixture.detectChanges();172 fixture.destroy();173 // then174 expect(mockLogger.print()).toEqual(expectedCycles);175 });176 });177 describe('Simple Three level components tree -', () => {178 beforeEach(() => {179 mockLogger.clear();180 TestBed181 .configureTestingModule({182 imports: [],183 declarations: [184 FirstLevelComponent,185 SecondLevelComponent,186 ThirdLevelComponent187 ],188 providers: [{189 provide: Logger, useValue: mockLogger190 }]191 });192 });193 /**194 *195 * <ct-first-level>196 * <ct-second-level>197 * <ct-third-level></ct-third-level>198 * </ct-second-level>199 * </ct-first-level>200 *201 */202 it('components does not have content', () => {203 // given204 const expectedCycles = [205 'First level - ngOnInit',206 'First level - ngDoCheck',207 'First level - ngAfterContentInit',208 'First level - ngAfterContentChecked',209 'Second level - ngOnInit',210 'Second level - ngDoCheck',211 'Second level - ngAfterContentInit',212 'Second level - ngAfterContentChecked',213 'Third level - ngOnInit',214 'Third level - ngDoCheck',215 'Third level - ngAfterContentInit',216 'Third level - ngAfterContentChecked',217 'Third level - ngAfterViewInit',218 'Third level - ngAfterViewChecked',219 'Second level - ngAfterViewInit',220 'Second level - ngAfterViewChecked',221 'First level - ngAfterViewInit',222 'First level - ngAfterViewChecked',223 'Third level - ngOnDestroy',224 'Second level - ngOnDestroy',225 'First level - ngOnDestroy'226 ];227 TestBed.overrideTemplate(SecondLevelComponent, `<ct-third-level ></ct-third-level>`);228 const fixture = TestBed.createComponent(FirstLevelComponent);229 // when230 fixture.detectChanges();231 fixture.destroy();232 // then233 expect(mockLogger.print()).toEqual(expectedCycles);234 });235 });236 describe('input modifications', () => {237 @Component({238 selector: 'test',239 template: `<ct-first-level [input]="val" ></ct-first-level>`240 })241 class InputTestComponent {242 val = 8;243 changeVal() {244 this.val = 10;245 }246 }247 beforeEach(() => {248 TestBed249 .configureTestingModule({250 imports: [],251 declarations: [252 InputTestComponent,253 FirstLevelComponent254 ],255 providers: [{256 provide: Logger, useValue: mockLogger257 }]258 });259 });260 it('Change input value of a component', () => {261 // given262 const expectedCycles = [263 'First level - ngOnChanges',264 'First level - ngDoCheck',265 'First level - ngAfterContentChecked',266 'First level - ngAfterViewChecked'267 ];268 TestBed.overrideTemplate(FirstLevelComponent, `no content`);269 const fixture = TestBed.createComponent(InputTestComponent);270 // when271 fixture.detectChanges();272 mockLogger.clear();273 fixture.componentInstance.changeVal();274 fixture.detectChanges();275 // then276 expect(mockLogger.print()).toEqual(expectedCycles);277 });278 });...
sample1.component.ts
Source:sample1.component.ts
...36 // Angularãã³ã³ãã¼ãã³ãã®ãã¥ã¼ãããã¯ãã£ã¬ã¯ãã£ããåå¨ãããã¥ã¼ã«ãå¤é¨ã³ã³ãã³ããæå½±ããå¾ã«å¿çãã¾ãã37 // æåã® ngDoCheck() ã®å¾ã« 1度 å¼ã³åºããã¾ãã38 console.log('3. ngAfterContentInit, ngDoCheckã®ãã¨ä¸åº¦ã ãå¼ã³åºããã');39 }40 ngAfterContentChecked() {41 // NOTE42 // Angularããã£ã¬ã¯ãã£ã/ã³ã³ãã¼ãã³ãã«æå½±ãããå¤é¨ã³ã³ãã³ãããã§ãã¯ããå¾ã«å¿çãã¾ãã43 console.log('4. ngAfterContentChecked, ngAfterContentInit() ã¨ãã®å¾å
¨ã¦ã® ngDoCheck() ã®å¾ã«å¼ã³åºããã¾ãã');44 }45 ngAfterViewInit() {46 // NOTE47 // Angularãã³ã³ãã¼ãã³ãã®ãã¥ã¼ã¨åã®ãã¥ã¼ããããã¯ãã£ã¬ã¯ãã£ããåå¨ãããã¥ã¼ãåæåããå¾ã«å¿çãã¾ãã48 // æåã® ngAfterContentChecked() ã®å¾ã« 1度 å¼ã³åºããã¾ãã49 console.log('5. ngAfterViewInit, æåã® ngAfterContentChecked() ã®å¾ã« 1度 å¼ã³åºããã¾ãã');50 }51 ngAfterViewChecked() {52 // NOTE53 // Angularãã³ã³ãã¼ãã³ãã®ãã¥ã¼ã¨åã®ãã¥ã¼ããããã¯ãã£ã¬ã¯ãã£ããåå¨ãããã¥ã¼ããã§ãã¯ããå¾ã«å¿çãã¾ãã54 // ngAfterViewInit() ã¨ãã®å¾ã®ãã¹ã¦ã® ngAfterContentChecked() ã®å¾ã«å¼ã³åºããã¾ãã55 console.log('6. ngAfterViewChecked, ngAfterViewInit() ã¨ãã®å¾ã®ãã¹ã¦ã® ngAfterContentChecked() ã®å¾ã«å¼ã³åºããã¾ãã');56 }57 ngOnDestroy() {58 // NOTE59 // Angularããã£ã¬ã¯ãã£ã/ã³ã³ãã¼ãã³ããç ´æ£ããç´åã«ãã¯ãªã¼ã³ã¢ãããã¾ãã ã¡ã¢ãªãªã¼ã¯ãåé¿ããããã«Observableã®è³¼èªã解é¤ããã¤ãã³ããã³ãã©ããã¿ãããã¾ãããã60 // Angularããã£ã¬ã¯ãã£ã/ã³ã³ãã¼ãã³ããç ´æ£ãã ç´å ã«å¼ã³åºããã¾ãã61 console.log('-1. ngOnDestroy, Angularããã£ã¬ã¯ãã£ã/ã³ã³ãã¼ãã³ããç ´æ£ãã ç´å ã«å¼ã³åºããã¾ã');62 }...
example.component.ts
Source:example.component.ts
...136 /**137 * @ngAfterContentChecked138 * æå½±æ£æµåè°ç¨, ngDoCheck ngAfterContentInit 触å139 */140 ngAfterContentChecked() {141 console.log('ngAfterContentChecked -');142 }143 /**144 * @ngAfterViewInit145 * åå§åå®æè§å¾æ¶è°ç¨, ngAfterContentChecked å触å, åªè°ç¨ä¸æ¬¡146 */147 ngAfterViewInit() {148 console.log('ngAfterViewInit -');149 }150 /**151 * @ngAfterViewChecked152 * è§å¾æ£æµåè°ç¨, ngAfterContentChecked ngAfterViewInit 触å153 */154 ngAfterViewChecked() {...
Using AI Code Generation
1import { AfterContentChecked } from '@angular/core';2import { MockBuilder, MockRender } from 'ng-mocks';3import { AppComponent } from './app.component';4describe('AppComponent', () => {5 beforeEach(() => MockBuilder(AppComponent));6 it('should create the app', () => {7 const fixture = MockRender(AppComponent);8 const app = fixture.point.componentInstance;9 expect(app).toBeTruthy();10 });11 it('should call ngAfterContentChecked', () => {12 const fixture = MockRender(AppComponent);13 const app = fixture.point.componentInstance;14 const spy = spyOn(app, 'ngAfterContentChecked');15 app.ngAfterContentChecked();16 expect(spy).toHaveBeenCalled();17 });18});19import { AfterContentChecked, Component } from '@angular/core';20@Component({21})22export class AppComponent implements AfterContentChecked {23 title = 'ng-mocks';24 ngAfterContentChecked(): void {25 console.log('ngAfterContentChecked');26 }27}28 Welcome to {{ title }}!29h1 {30 color: #369;31 font-family: Arial, Helvetica, sans-serif;32 font-size: 250%;33}34import { MockBuilder, MockRender, ngMocks } from 'ng-mocks';35import { AppComponent } from './app.component';36describe('AppComponent', () => {37 beforeEach(() => MockBuilder(AppComponent));38 it('should create the app', () => {39 const fixture = MockRender(AppComponent);40 const app = fixture.point.componentInstance;41 expect(app).toBeTruthy();42 });43 it('should call ngAfterContentChecked', () => {44 const fixture = MockRender(AppComponent);45 const app = fixture.point.componentInstance;46 const spy = spyOn(app, 'ngAfterContentChecked');47 app.ngAfterContentChecked();48 expect(spy).toHaveBeenCalled();49 });50 it('should call ngAfterContentChecked using ngMocks', ()
Using AI Code Generation
1import { Component } from '@angular/core';2import { TestBed } from '@angular/core/testing';3import { MockBuilder, MockRender } from 'ng-mocks';4import { ChildComponent } from './child.component';5import { ParentComponent } from './parent.component';6@Component({7})8class AppComponent {}9describe('AppComponent', () => {10 beforeEach(() => MockBuilder(AppComponent, ParentComponent));11 it('should create the app', () => {12 const fixture = MockRender(AppComponent);13 const app = fixture.point.componentInstance;14 expect(app).toBeTruthy();15 });16 it('should call ngAfterContentChecked method of parent component', () => {17 const fixture = MockRender(AppComponent);18 const app = fixture.point.componentInstance;19 const parentComponent = fixture.debugElement.children[0].componentInstance;20 const spy = spyOn(parentComponent, 'ngAfterContentChecked');21 app.ngAfterContentChecked();22 expect(spy).toHaveBeenCalled();23 });24 it('should call ngAfterContentChecked method of child component', () => {25 const fixture = MockRender(AppComponent);26 const app = fixture.point.componentInstance;27 const childComponent = fixture.debugElement.children[0].children[0].componentInstance;28 const spy = spyOn(childComponent, 'ngAfterContentChecked');29 app.ngAfterContentChecked();30 expect(spy).toHaveBeenCalled();31 });32});33import { Component, Input, AfterContentChecked } from '@angular/core';34@Component({35 <p>{{childValue}}</p>36})37export class ChildComponent implements AfterContentChecked {38 @Input() childValue: string;39 ngAfterContentChecked() {40 console.log('child component ngAfterContentChecked method is called');41 }42}43import { Component, AfterContentChecked } from '@angular/core';44import { ChildComponent } from './child.component';45@Component({46})47export class ParentComponent implements AfterContentChecked {48 parentValue = 'Parent Value';49 ngAfterContentChecked() {50 console.log('parent component ngAfterContentChecked method is called');
Using AI Code Generation
1import { Component, OnInit, AfterContentChecked} from '@angular/core';2import { NgMocks } from 'ng-mocks';3@Component({4})5export class TestComponent implements OnInit, AfterContentChecked {6 constructor() { }7 ngOnInit() {8 }9 ngAfterContentChecked() {10 console.log('ngAfterContentChecked called');11 }12}13import { async, ComponentFixture, TestBed } from '@angular/core/testing';14import { TestComponent } from './test.component';15import { NgMocks } from 'ng-mocks';16describe('TestComponent', () => {17 let component: TestComponent;18 let fixture: ComponentFixture<TestComponent>;19 beforeEach(async(() => {20 TestBed.configureTestingModule({21 })22 .compileComponents();23 }));24 beforeEach(() => {25 fixture = TestBed.createComponent(TestComponent);26 component = fixture.componentInstance;27 fixture.detectChanges();28 });29 it('should create', () => {30 expect(component).toBeTruthy();31 });32 it('should call ngAfterContentChecked', () => {33 const spy = spyOn(component, 'ngAfterContentChecked');34 NgMocks.triggerLifecycle(fixture, 'ngAfterContentChecked');35 expect(spy).toHaveBeenCalled();36 });37});
Using AI Code Generation
1import { async, ComponentFixture, TestBed } from '@angular/core/testing';2import { By } from '@angular/platform-browser';3import { MockComponent, MockModule } from 'ng-mocks';4import { ChildComponent } from './child.component';5import { ParentComponent } from './parent.component';6describe('ParentComponent', () => {7 let component: ParentComponent;8 let fixture: ComponentFixture<ParentComponent>;9 beforeEach(async(() => {10 TestBed.configureTestingModule({11 declarations: [ParentComponent, MockComponent(ChildComponent)],12 imports: [MockModule],13 }).compileComponents();14 }));15 beforeEach(() => {16 fixture = TestBed.createComponent(ParentComponent);17 component = fixture.componentInstance;18 fixture.detectChanges();19 });20 it('should create', () => {21 expect(component).toBeTruthy();22 });23 it('should call ngAfterContentChecked', () => {24 const spy = spyOn(component, 'ngAfterContentChecked');25 fixture.detectChanges();26 expect(spy).toHaveBeenCalled();27 });28 it('should call ngAfterContentChecked', () => {29 const childComponent = fixture.debugElement.query(By.css('app-child'));30 const spy = spyOn(childComponent.componentInstance, 'ngAfterContentChecked');31 fixture.detectChanges();32 expect(spy).toHaveBeenCalled();33 });34});35import { Component, Input, OnChanges, SimpleChanges } from '@angular/core';36@Component({37 <div>{{ data }}</div>38})39export class ChildComponent implements OnChanges {40 @Input() data: string;41 ngOnChanges(changes: SimpleChanges) {42 console.log('child ngOnChanges', changes);43 }44 ngAfterContentChecked() {45 console.log('child ngAfterContentChecked');46 }47}48import { Component, OnChanges, SimpleChanges } from '@angular/core';49@Component({50})51export class ParentComponent implements OnChanges {52 data = 'parent data';53 ngOnChanges(changes: SimpleChanges) {54 console.log('parent ngOnChanges', changes);55 }56 ngAfterContentChecked() {57 console.log('parent ngAfterContentChecked');58 }59}60parent ngOnChanges { }61child ngOnChanges { data: { currentValue: 'parent data', previousValue: undefined, isFirstChange: () => true
Using AI Code Generation
1import { Component, ContentChild, Directive, Input, TemplateRef, ViewChild } from '@angular/core';2import { MockBuilder, MockRender, ngMocks } from 'ng-mocks';3@Directive({4})5export class MyDirective {6 @Input() public myDirective: string;7}8@Component({9})10export class TargetComponent {11 @ContentChild(TemplateRef, { static: true }) public readonly template!: TemplateRef<any>;12 @ViewChild(MyDirective, { static: true }) public readonly directive!: MyDirective;13 public visible = false;14 public value = 'init';15 public ngAfterContentChecked(): void {16 this.value = 'changed';17 }18}19describe('TargetComponent', () => {20 beforeEach(() => MockBuilder(TargetComponent));21 it('works', () => {22 const fixture = MockRender(TargetComponent);23 expect(ngMocks.formatText(fixture)).toEqual('init');24 fixture.componentInstance.visible = true;25 fixture.detectChanges();26 expect(ngMocks.formatText(fixture)).toEqual('changed');27 });28});
Using AI Code Generation
1import { AfterContentChecked, Component, Input } from '@angular/core';2import { MockBuilder, MockRender } from 'ng-mocks';3@Component({4 <div>{{ text }}</div>5})6class TestComponent implements AfterContentChecked {7 @Input()8 public text: string;9 public ngAfterContentChecked(): void {10 console.log('ngAfterContentChecked called');11 }12}13describe('TestComponent', () => {14 beforeEach(() => MockBuilder(TestComponent));15 it('should log ngAfterContentChecked', () => {16 const spy = spyOn(TestComponent.prototype, 'ngAfterContentChecked');17 MockRender(TestComponent, { text: 'test' });18 expect(spy).toHaveBeenCalled();19 });20});21import { AfterContentChecked, Component, Input } from '@angular/core';22import { MockBuilder, MockRender } from 'ng-mocks';23@Component({24 <div>{{ text }}</div>25})26class TestComponent implements AfterContentChecked {27 @Input()28 public text: string;29 public ngAfterContentChecked(): void {30 console.log('ngAfterContentChecked called');31 }32}33describe('TestComponent', () => {34 beforeEach(() => MockBuilder(TestComponent));35 it('should log ngAfterContentChecked', () => {36 const spy = spyOn(TestComponent.prototype, 'ngAfterContentChecked');37 MockRender(TestComponent, { text: 'test' });38 expect(spy).toHaveBeenCalled();39 });40});41import { AfterContentChecked, Component, Input } from '@angular/core';42import { MockBuilder, MockRender } from 'ng-mocks';43@Component({44 <div>{{ text }}</div>45})46class TestComponent implements AfterContentChecked {47 @Input()48 public text: string;49 public ngAfterContentChecked(): void {50 console.log('ngAfterContentChecked called');51 }52}53describe('TestComponent', () => {54 beforeEach(() => MockBuilder(TestComponent));55 it('should log ngAfterContentChecked', () => {56 const spy = spyOn(TestComponent.prototype, 'ngAfterContentChecked');
Using AI Code Generation
1import { Component, AfterContentChecked, Input } from '@angular/core';2import { MockComponent } from 'ng-mocks';3@Component({4})5export class TestComponent implements AfterContentChecked {6 @Input() show = true;7 ngAfterContentChecked() {8 console.log('ngAfterContentChecked');9 }10}11@Component({12})13export class TestComponentMock implements AfterContentChecked {14 @Input() show = true;15 ngAfterContentChecked() {16 console.log('ngAfterContentChecked');17 }18}19const MockTestComponent = MockComponent(TestComponent, TestComponentMock);20@Component({21})22export class AppComponent {23 show = true;24}25describe('AppComponent', () => {26 beforeEach(() => {27 TestBed.configureTestingModule({28 });29 });30 it('should create the app', () => {31 const fixture = TestBed.createComponent(AppComponent);32 const app = fixture.debugElement.componentInstance;33 expect(app).toBeTruthy();34 });35 it('should show ngAfterContentChecked method', () => {36 const fixture = TestBed.createComponent(AppComponent);37 const app = fixture.debugElement.componentInstance;38 app.show = false;39 fixture.detectChanges();40 expect(fixture.nativeElement.querySelector('div').textContent).toBe('');41 });42});43To avoid this issue, we need to mock the ngAfterContentChecked method. To do this, we need to import the MockRender method from ng-mocks. We need to pass
Using AI Code Generation
1import { AfterContentChecked, Component, Input } from '@angular/core';2@Component({3})4export class AppComponent implements AfterContentChecked {5 constructor() {6 console.log('constructor');7 }8 ngAfterContentChecked() {9 console.log('ngAfterContentChecked');10 }11}12import { ComponentFixture, TestBed } from '@angular/core/testing';13import { AppComponent } from './app.component';14describe('AppComponent', () => {15 let component: AppComponent;16 let fixture: ComponentFixture<AppComponent>;17 beforeEach(async () => {18 await TestBed.configureTestingModule({19 }).compileComponents();20 });21 beforeEach(() => {22 fixture = TestBed.createComponent(AppComponent);23 component = fixture.componentInstance;24 fixture.detectChanges();25 });26 it('should call ngAfterContentChecked', () => {27 spyOn(component, 'ngAfterContentChecked');28 fixture.detectChanges();29 expect(component.ngAfterContentChecked).toHaveBeenCalled();30 });31});32ngAfterContentChecked() method of ng-mocks33import { AfterContentChecked, Component, Input } from '@angular/core';34@Component({35})36export class AppComponent implements AfterContentChecked {37 constructor() {38 console.log('constructor');39 }40 ngAfterContentChecked() {41 console.log('ngAfterContentChecked');42 }43}44import { ComponentFixture, TestBed } from '@angular/core/testing';45import { AppComponent } from './app.component';46describe('AppComponent', () => {47 let component: AppComponent;48 let fixture: ComponentFixture<AppComponent>;49 beforeEach(async () => {50 await TestBed.configureTestingModule({51 }).compileComponents();52 });53 beforeEach(() => {54 fixture = TestBed.createComponent(AppComponent);55 component = fixture.componentInstance;
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