Expected null to be truthy. Jasmine / Karma










1















I'm trying to test my component injected into a mock class I created. Although the component works when I try to test its existence it returns null.



Injectable Component:



import Injectable, ElementRef, Renderer2, RendererFactory2 from '@angular/core';

@Injectable()
export class NgBackdropComponent
private renderer: Renderer2;
private appElementRef: ElementRef;

message: string = 'Carregando...';

constructor(rendererFactory: RendererFactory2)
this.renderer = rendererFactory.createRenderer(null, null);
this.appElementRef = new ElementRef(<Element>document.getElementsByTagName('body').item(0));


show()
const divSpinnerItem1 = this.renderer.createElement('i');
const divSpinnerItem2 = this.renderer.createElement('i');
const divSpinnerItem3 = this.renderer.createElement('i');
const divSpinner = this.renderer.createElement('div');
this.renderer.addClass(divSpinner, 'spinner');
this.renderer.appendChild(divSpinner, divSpinnerItem1);
this.renderer.appendChild(divSpinner, divSpinnerItem2);
this.renderer.appendChild(divSpinner, divSpinnerItem3);

const spanMensagem = this.renderer.createElement('span');
spanMensagem.innerHTML = this.message;

const div = this.renderer.createElement('div');
this.renderer.addClass(div, 'lock-content');
this.renderer.appendChild(div, divSpinner);
this.renderer.appendChild(div, spanMensagem);

this.renderer.appendChild(this.appElementRef.nativeElement, div);


hide()
const elemento = this.appElementRef.nativeElement.querySelector('.lock-content');
if (elemento)
elemento.remove();





my testing environment:



import async, ComponentFixture, TestBed from '@angular/core/testing';

import NgBackdropComponent from './ng-backdrop.component';
import Component from '@angular/core';
import By from '@angular/platform-browser';


@Component(
template: `
<button (click)="clickButton()"></button>
`
)
class MockNgBackdropComponent
constructor(private backdrop: NgBackdropComponent)

clickButton()
this.backdrop.message = 'Teste BackDrop aesdas';
this.backdrop.show();
console.log('iniciei backdrop');


closeBackdrop()
this.backdrop.hide();



describe('NgBackdropComponent', () =>
let component: MockNgBackdropComponent;
let fixture: ComponentFixture<MockNgBackdropComponent>;

beforeEach(async(() =>
TestBed.configureTestingModule(
declarations: [MockNgBackdropComponent],
providers: [NgBackdropComponent]
)
.compileComponents();
));

beforeEach(() =>
fixture = TestBed.createComponent(MockNgBackdropComponent);
component = fixture.componentInstance;
);

describe('Deve injetar', async () =>

it('Deve ter uma div principal', function ()
const btnClick = fixture.nativeElement.querySelector('button');
btnClick.click();
fixture.detectChanges();

const el = fixture.nativeElement.querySelector('.lock-content');
console.log(el);

expect(el).toBeTruthy();
);
);
);


In testing I create a Mock class where I inject my component.
I do not understand why it can not find the class because it exists.










share|improve this question


























    1















    I'm trying to test my component injected into a mock class I created. Although the component works when I try to test its existence it returns null.



    Injectable Component:



    import Injectable, ElementRef, Renderer2, RendererFactory2 from '@angular/core';

    @Injectable()
    export class NgBackdropComponent
    private renderer: Renderer2;
    private appElementRef: ElementRef;

    message: string = 'Carregando...';

    constructor(rendererFactory: RendererFactory2)
    this.renderer = rendererFactory.createRenderer(null, null);
    this.appElementRef = new ElementRef(<Element>document.getElementsByTagName('body').item(0));


    show()
    const divSpinnerItem1 = this.renderer.createElement('i');
    const divSpinnerItem2 = this.renderer.createElement('i');
    const divSpinnerItem3 = this.renderer.createElement('i');
    const divSpinner = this.renderer.createElement('div');
    this.renderer.addClass(divSpinner, 'spinner');
    this.renderer.appendChild(divSpinner, divSpinnerItem1);
    this.renderer.appendChild(divSpinner, divSpinnerItem2);
    this.renderer.appendChild(divSpinner, divSpinnerItem3);

    const spanMensagem = this.renderer.createElement('span');
    spanMensagem.innerHTML = this.message;

    const div = this.renderer.createElement('div');
    this.renderer.addClass(div, 'lock-content');
    this.renderer.appendChild(div, divSpinner);
    this.renderer.appendChild(div, spanMensagem);

    this.renderer.appendChild(this.appElementRef.nativeElement, div);


    hide()
    const elemento = this.appElementRef.nativeElement.querySelector('.lock-content');
    if (elemento)
    elemento.remove();





    my testing environment:



    import async, ComponentFixture, TestBed from '@angular/core/testing';

    import NgBackdropComponent from './ng-backdrop.component';
    import Component from '@angular/core';
    import By from '@angular/platform-browser';


    @Component(
    template: `
    <button (click)="clickButton()"></button>
    `
    )
    class MockNgBackdropComponent
    constructor(private backdrop: NgBackdropComponent)

    clickButton()
    this.backdrop.message = 'Teste BackDrop aesdas';
    this.backdrop.show();
    console.log('iniciei backdrop');


    closeBackdrop()
    this.backdrop.hide();



    describe('NgBackdropComponent', () =>
    let component: MockNgBackdropComponent;
    let fixture: ComponentFixture<MockNgBackdropComponent>;

    beforeEach(async(() =>
    TestBed.configureTestingModule(
    declarations: [MockNgBackdropComponent],
    providers: [NgBackdropComponent]
    )
    .compileComponents();
    ));

    beforeEach(() =>
    fixture = TestBed.createComponent(MockNgBackdropComponent);
    component = fixture.componentInstance;
    );

    describe('Deve injetar', async () =>

    it('Deve ter uma div principal', function ()
    const btnClick = fixture.nativeElement.querySelector('button');
    btnClick.click();
    fixture.detectChanges();

    const el = fixture.nativeElement.querySelector('.lock-content');
    console.log(el);

    expect(el).toBeTruthy();
    );
    );
    );


    In testing I create a Mock class where I inject my component.
    I do not understand why it can not find the class because it exists.










    share|improve this question
























      1












      1








      1








      I'm trying to test my component injected into a mock class I created. Although the component works when I try to test its existence it returns null.



      Injectable Component:



      import Injectable, ElementRef, Renderer2, RendererFactory2 from '@angular/core';

      @Injectable()
      export class NgBackdropComponent
      private renderer: Renderer2;
      private appElementRef: ElementRef;

      message: string = 'Carregando...';

      constructor(rendererFactory: RendererFactory2)
      this.renderer = rendererFactory.createRenderer(null, null);
      this.appElementRef = new ElementRef(<Element>document.getElementsByTagName('body').item(0));


      show()
      const divSpinnerItem1 = this.renderer.createElement('i');
      const divSpinnerItem2 = this.renderer.createElement('i');
      const divSpinnerItem3 = this.renderer.createElement('i');
      const divSpinner = this.renderer.createElement('div');
      this.renderer.addClass(divSpinner, 'spinner');
      this.renderer.appendChild(divSpinner, divSpinnerItem1);
      this.renderer.appendChild(divSpinner, divSpinnerItem2);
      this.renderer.appendChild(divSpinner, divSpinnerItem3);

      const spanMensagem = this.renderer.createElement('span');
      spanMensagem.innerHTML = this.message;

      const div = this.renderer.createElement('div');
      this.renderer.addClass(div, 'lock-content');
      this.renderer.appendChild(div, divSpinner);
      this.renderer.appendChild(div, spanMensagem);

      this.renderer.appendChild(this.appElementRef.nativeElement, div);


      hide()
      const elemento = this.appElementRef.nativeElement.querySelector('.lock-content');
      if (elemento)
      elemento.remove();





      my testing environment:



      import async, ComponentFixture, TestBed from '@angular/core/testing';

      import NgBackdropComponent from './ng-backdrop.component';
      import Component from '@angular/core';
      import By from '@angular/platform-browser';


      @Component(
      template: `
      <button (click)="clickButton()"></button>
      `
      )
      class MockNgBackdropComponent
      constructor(private backdrop: NgBackdropComponent)

      clickButton()
      this.backdrop.message = 'Teste BackDrop aesdas';
      this.backdrop.show();
      console.log('iniciei backdrop');


      closeBackdrop()
      this.backdrop.hide();



      describe('NgBackdropComponent', () =>
      let component: MockNgBackdropComponent;
      let fixture: ComponentFixture<MockNgBackdropComponent>;

      beforeEach(async(() =>
      TestBed.configureTestingModule(
      declarations: [MockNgBackdropComponent],
      providers: [NgBackdropComponent]
      )
      .compileComponents();
      ));

      beforeEach(() =>
      fixture = TestBed.createComponent(MockNgBackdropComponent);
      component = fixture.componentInstance;
      );

      describe('Deve injetar', async () =>

      it('Deve ter uma div principal', function ()
      const btnClick = fixture.nativeElement.querySelector('button');
      btnClick.click();
      fixture.detectChanges();

      const el = fixture.nativeElement.querySelector('.lock-content');
      console.log(el);

      expect(el).toBeTruthy();
      );
      );
      );


      In testing I create a Mock class where I inject my component.
      I do not understand why it can not find the class because it exists.










      share|improve this question














      I'm trying to test my component injected into a mock class I created. Although the component works when I try to test its existence it returns null.



      Injectable Component:



      import Injectable, ElementRef, Renderer2, RendererFactory2 from '@angular/core';

      @Injectable()
      export class NgBackdropComponent
      private renderer: Renderer2;
      private appElementRef: ElementRef;

      message: string = 'Carregando...';

      constructor(rendererFactory: RendererFactory2)
      this.renderer = rendererFactory.createRenderer(null, null);
      this.appElementRef = new ElementRef(<Element>document.getElementsByTagName('body').item(0));


      show()
      const divSpinnerItem1 = this.renderer.createElement('i');
      const divSpinnerItem2 = this.renderer.createElement('i');
      const divSpinnerItem3 = this.renderer.createElement('i');
      const divSpinner = this.renderer.createElement('div');
      this.renderer.addClass(divSpinner, 'spinner');
      this.renderer.appendChild(divSpinner, divSpinnerItem1);
      this.renderer.appendChild(divSpinner, divSpinnerItem2);
      this.renderer.appendChild(divSpinner, divSpinnerItem3);

      const spanMensagem = this.renderer.createElement('span');
      spanMensagem.innerHTML = this.message;

      const div = this.renderer.createElement('div');
      this.renderer.addClass(div, 'lock-content');
      this.renderer.appendChild(div, divSpinner);
      this.renderer.appendChild(div, spanMensagem);

      this.renderer.appendChild(this.appElementRef.nativeElement, div);


      hide()
      const elemento = this.appElementRef.nativeElement.querySelector('.lock-content');
      if (elemento)
      elemento.remove();





      my testing environment:



      import async, ComponentFixture, TestBed from '@angular/core/testing';

      import NgBackdropComponent from './ng-backdrop.component';
      import Component from '@angular/core';
      import By from '@angular/platform-browser';


      @Component(
      template: `
      <button (click)="clickButton()"></button>
      `
      )
      class MockNgBackdropComponent
      constructor(private backdrop: NgBackdropComponent)

      clickButton()
      this.backdrop.message = 'Teste BackDrop aesdas';
      this.backdrop.show();
      console.log('iniciei backdrop');


      closeBackdrop()
      this.backdrop.hide();



      describe('NgBackdropComponent', () =>
      let component: MockNgBackdropComponent;
      let fixture: ComponentFixture<MockNgBackdropComponent>;

      beforeEach(async(() =>
      TestBed.configureTestingModule(
      declarations: [MockNgBackdropComponent],
      providers: [NgBackdropComponent]
      )
      .compileComponents();
      ));

      beforeEach(() =>
      fixture = TestBed.createComponent(MockNgBackdropComponent);
      component = fixture.componentInstance;
      );

      describe('Deve injetar', async () =>

      it('Deve ter uma div principal', function ()
      const btnClick = fixture.nativeElement.querySelector('button');
      btnClick.click();
      fixture.detectChanges();

      const el = fixture.nativeElement.querySelector('.lock-content');
      console.log(el);

      expect(el).toBeTruthy();
      );
      );
      );


      In testing I create a Mock class where I inject my component.
      I do not understand why it can not find the class because it exists.







      jasmine angular6 karma-jasmine






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 14 '18 at 18:05









      André MontórioAndré Montório

      3018




      3018






















          2 Answers
          2






          active

          oldest

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          1














          The reason you can't find it in the component is because you did not create it in the component. If you look at this line in your constructor:



          this.appElementRef = new ElementRef(<Element>document.getElementsByTagName('body').item(0))


          You are creating it on the document directly in the <body> element. If you search for that in your spec, you will find it there. I created a STACKBLITZ to show you what I mean. Here is the spec from that stackblitz:



          it('Deve ter uma div principal', () => 
          const btnClick = fixture.nativeElement.querySelector('button');
          console.log(btnClick);
          btnClick.click();
          fixture.detectChanges();
          const appElementRef = new ElementRef(<Element>document.getElementsByTagName('body').item(0));
          const el = appElementRef.nativeElement.querySelector('.lock-content');
          expect(el).toBeTruthy();
          );



          Adding a little more clarification:



          If you console.log(appElementRef) you'll notice that its tagName is body, and note the contents of its nativeElement.innerHTML Here is what that would look like "prettyfied":



          <body>
          <div class="jasmine_html-reporter">
          <div class="jasmine-banner"><a class="jasmine-title" href="http://jasmine.github.io/" target="_blank"></a><span
          class="jasmine-version">3.3.0</span></div>
          <ul class="jasmine-symbol-summary"></ul>
          <div class="jasmine-alert"></div>
          <div class="jasmine-results">
          <div class="jasmine-failures"></div>
          </div>
          </div>
          <div id="nprogress" style="transition: none 0s ease 0s; opacity: 1;">
          <div class="bar" role="bar" style="transform: translate3d(0%, 0px, 0px); transition: all 200ms ease 0s;">
          <div class="peg"></div>
          </div>
          </div>
          <div id="root0" ng-version="7.0.1">
          <button></button>
          </div>
          <div class="lock-content">
          <div class="spinner">
          <i></i>
          <i></i>
          <i></i>
          </div>
          <span>Teste BackDrop aesdas</span>
          </div>
          </body>


          Note how the button was created within the div with id="root0"? However, the div with class="lock-content" was created right off the root <body> element, and therefore is not within the div of the component.



          In fact, you can see this very clearly when you console.log(fixture.nativeElement) and see that the tagName is "div", its innerHTML is <button></button>, and it has two attributes: id: "root0" and ng-version: "7.0.1". Put that all together and it looks like this:



          <div id="root0" ng-version="7.0.1">
          <button></button>
          </div>


          So you can clearly see that you cannot find the div you created in the component because you created it outside the component.



          I hope this helps.






          share|improve this answer

























          • worked, thankss!!!

            – André Montório
            Nov 16 '18 at 11:16











          • Happy to help. :)

            – dmcgrandle
            Nov 16 '18 at 20:10


















          0














          I think you should use DebugElement, for example:



          it('Deve ter uma div principal', function () 
          const btnClick = fixture.debugElement.query(By.css('button'));
          btnClick.click();
          fixture.detectChanges();

          const el = fixture.debugElement.query(By.css('.lock-content'));
          console.log(el);

          expect(el).toBeTruthy();
          );


          Follow this link for more information.






          share|improve this answer
























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            2 Answers
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            active

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            2 Answers
            2






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            1














            The reason you can't find it in the component is because you did not create it in the component. If you look at this line in your constructor:



            this.appElementRef = new ElementRef(<Element>document.getElementsByTagName('body').item(0))


            You are creating it on the document directly in the <body> element. If you search for that in your spec, you will find it there. I created a STACKBLITZ to show you what I mean. Here is the spec from that stackblitz:



            it('Deve ter uma div principal', () => 
            const btnClick = fixture.nativeElement.querySelector('button');
            console.log(btnClick);
            btnClick.click();
            fixture.detectChanges();
            const appElementRef = new ElementRef(<Element>document.getElementsByTagName('body').item(0));
            const el = appElementRef.nativeElement.querySelector('.lock-content');
            expect(el).toBeTruthy();
            );



            Adding a little more clarification:



            If you console.log(appElementRef) you'll notice that its tagName is body, and note the contents of its nativeElement.innerHTML Here is what that would look like "prettyfied":



            <body>
            <div class="jasmine_html-reporter">
            <div class="jasmine-banner"><a class="jasmine-title" href="http://jasmine.github.io/" target="_blank"></a><span
            class="jasmine-version">3.3.0</span></div>
            <ul class="jasmine-symbol-summary"></ul>
            <div class="jasmine-alert"></div>
            <div class="jasmine-results">
            <div class="jasmine-failures"></div>
            </div>
            </div>
            <div id="nprogress" style="transition: none 0s ease 0s; opacity: 1;">
            <div class="bar" role="bar" style="transform: translate3d(0%, 0px, 0px); transition: all 200ms ease 0s;">
            <div class="peg"></div>
            </div>
            </div>
            <div id="root0" ng-version="7.0.1">
            <button></button>
            </div>
            <div class="lock-content">
            <div class="spinner">
            <i></i>
            <i></i>
            <i></i>
            </div>
            <span>Teste BackDrop aesdas</span>
            </div>
            </body>


            Note how the button was created within the div with id="root0"? However, the div with class="lock-content" was created right off the root <body> element, and therefore is not within the div of the component.



            In fact, you can see this very clearly when you console.log(fixture.nativeElement) and see that the tagName is "div", its innerHTML is <button></button>, and it has two attributes: id: "root0" and ng-version: "7.0.1". Put that all together and it looks like this:



            <div id="root0" ng-version="7.0.1">
            <button></button>
            </div>


            So you can clearly see that you cannot find the div you created in the component because you created it outside the component.



            I hope this helps.






            share|improve this answer

























            • worked, thankss!!!

              – André Montório
              Nov 16 '18 at 11:16











            • Happy to help. :)

              – dmcgrandle
              Nov 16 '18 at 20:10















            1














            The reason you can't find it in the component is because you did not create it in the component. If you look at this line in your constructor:



            this.appElementRef = new ElementRef(<Element>document.getElementsByTagName('body').item(0))


            You are creating it on the document directly in the <body> element. If you search for that in your spec, you will find it there. I created a STACKBLITZ to show you what I mean. Here is the spec from that stackblitz:



            it('Deve ter uma div principal', () => 
            const btnClick = fixture.nativeElement.querySelector('button');
            console.log(btnClick);
            btnClick.click();
            fixture.detectChanges();
            const appElementRef = new ElementRef(<Element>document.getElementsByTagName('body').item(0));
            const el = appElementRef.nativeElement.querySelector('.lock-content');
            expect(el).toBeTruthy();
            );



            Adding a little more clarification:



            If you console.log(appElementRef) you'll notice that its tagName is body, and note the contents of its nativeElement.innerHTML Here is what that would look like "prettyfied":



            <body>
            <div class="jasmine_html-reporter">
            <div class="jasmine-banner"><a class="jasmine-title" href="http://jasmine.github.io/" target="_blank"></a><span
            class="jasmine-version">3.3.0</span></div>
            <ul class="jasmine-symbol-summary"></ul>
            <div class="jasmine-alert"></div>
            <div class="jasmine-results">
            <div class="jasmine-failures"></div>
            </div>
            </div>
            <div id="nprogress" style="transition: none 0s ease 0s; opacity: 1;">
            <div class="bar" role="bar" style="transform: translate3d(0%, 0px, 0px); transition: all 200ms ease 0s;">
            <div class="peg"></div>
            </div>
            </div>
            <div id="root0" ng-version="7.0.1">
            <button></button>
            </div>
            <div class="lock-content">
            <div class="spinner">
            <i></i>
            <i></i>
            <i></i>
            </div>
            <span>Teste BackDrop aesdas</span>
            </div>
            </body>


            Note how the button was created within the div with id="root0"? However, the div with class="lock-content" was created right off the root <body> element, and therefore is not within the div of the component.



            In fact, you can see this very clearly when you console.log(fixture.nativeElement) and see that the tagName is "div", its innerHTML is <button></button>, and it has two attributes: id: "root0" and ng-version: "7.0.1". Put that all together and it looks like this:



            <div id="root0" ng-version="7.0.1">
            <button></button>
            </div>


            So you can clearly see that you cannot find the div you created in the component because you created it outside the component.



            I hope this helps.






            share|improve this answer

























            • worked, thankss!!!

              – André Montório
              Nov 16 '18 at 11:16











            • Happy to help. :)

              – dmcgrandle
              Nov 16 '18 at 20:10













            1












            1








            1







            The reason you can't find it in the component is because you did not create it in the component. If you look at this line in your constructor:



            this.appElementRef = new ElementRef(<Element>document.getElementsByTagName('body').item(0))


            You are creating it on the document directly in the <body> element. If you search for that in your spec, you will find it there. I created a STACKBLITZ to show you what I mean. Here is the spec from that stackblitz:



            it('Deve ter uma div principal', () => 
            const btnClick = fixture.nativeElement.querySelector('button');
            console.log(btnClick);
            btnClick.click();
            fixture.detectChanges();
            const appElementRef = new ElementRef(<Element>document.getElementsByTagName('body').item(0));
            const el = appElementRef.nativeElement.querySelector('.lock-content');
            expect(el).toBeTruthy();
            );



            Adding a little more clarification:



            If you console.log(appElementRef) you'll notice that its tagName is body, and note the contents of its nativeElement.innerHTML Here is what that would look like "prettyfied":



            <body>
            <div class="jasmine_html-reporter">
            <div class="jasmine-banner"><a class="jasmine-title" href="http://jasmine.github.io/" target="_blank"></a><span
            class="jasmine-version">3.3.0</span></div>
            <ul class="jasmine-symbol-summary"></ul>
            <div class="jasmine-alert"></div>
            <div class="jasmine-results">
            <div class="jasmine-failures"></div>
            </div>
            </div>
            <div id="nprogress" style="transition: none 0s ease 0s; opacity: 1;">
            <div class="bar" role="bar" style="transform: translate3d(0%, 0px, 0px); transition: all 200ms ease 0s;">
            <div class="peg"></div>
            </div>
            </div>
            <div id="root0" ng-version="7.0.1">
            <button></button>
            </div>
            <div class="lock-content">
            <div class="spinner">
            <i></i>
            <i></i>
            <i></i>
            </div>
            <span>Teste BackDrop aesdas</span>
            </div>
            </body>


            Note how the button was created within the div with id="root0"? However, the div with class="lock-content" was created right off the root <body> element, and therefore is not within the div of the component.



            In fact, you can see this very clearly when you console.log(fixture.nativeElement) and see that the tagName is "div", its innerHTML is <button></button>, and it has two attributes: id: "root0" and ng-version: "7.0.1". Put that all together and it looks like this:



            <div id="root0" ng-version="7.0.1">
            <button></button>
            </div>


            So you can clearly see that you cannot find the div you created in the component because you created it outside the component.



            I hope this helps.






            share|improve this answer















            The reason you can't find it in the component is because you did not create it in the component. If you look at this line in your constructor:



            this.appElementRef = new ElementRef(<Element>document.getElementsByTagName('body').item(0))


            You are creating it on the document directly in the <body> element. If you search for that in your spec, you will find it there. I created a STACKBLITZ to show you what I mean. Here is the spec from that stackblitz:



            it('Deve ter uma div principal', () => 
            const btnClick = fixture.nativeElement.querySelector('button');
            console.log(btnClick);
            btnClick.click();
            fixture.detectChanges();
            const appElementRef = new ElementRef(<Element>document.getElementsByTagName('body').item(0));
            const el = appElementRef.nativeElement.querySelector('.lock-content');
            expect(el).toBeTruthy();
            );



            Adding a little more clarification:



            If you console.log(appElementRef) you'll notice that its tagName is body, and note the contents of its nativeElement.innerHTML Here is what that would look like "prettyfied":



            <body>
            <div class="jasmine_html-reporter">
            <div class="jasmine-banner"><a class="jasmine-title" href="http://jasmine.github.io/" target="_blank"></a><span
            class="jasmine-version">3.3.0</span></div>
            <ul class="jasmine-symbol-summary"></ul>
            <div class="jasmine-alert"></div>
            <div class="jasmine-results">
            <div class="jasmine-failures"></div>
            </div>
            </div>
            <div id="nprogress" style="transition: none 0s ease 0s; opacity: 1;">
            <div class="bar" role="bar" style="transform: translate3d(0%, 0px, 0px); transition: all 200ms ease 0s;">
            <div class="peg"></div>
            </div>
            </div>
            <div id="root0" ng-version="7.0.1">
            <button></button>
            </div>
            <div class="lock-content">
            <div class="spinner">
            <i></i>
            <i></i>
            <i></i>
            </div>
            <span>Teste BackDrop aesdas</span>
            </div>
            </body>


            Note how the button was created within the div with id="root0"? However, the div with class="lock-content" was created right off the root <body> element, and therefore is not within the div of the component.



            In fact, you can see this very clearly when you console.log(fixture.nativeElement) and see that the tagName is "div", its innerHTML is <button></button>, and it has two attributes: id: "root0" and ng-version: "7.0.1". Put that all together and it looks like this:



            <div id="root0" ng-version="7.0.1">
            <button></button>
            </div>


            So you can clearly see that you cannot find the div you created in the component because you created it outside the component.



            I hope this helps.







            share|improve this answer














            share|improve this answer



            share|improve this answer








            edited Nov 15 '18 at 16:50

























            answered Nov 15 '18 at 7:56









            dmcgrandledmcgrandle

            2,2711621




            2,2711621












            • worked, thankss!!!

              – André Montório
              Nov 16 '18 at 11:16











            • Happy to help. :)

              – dmcgrandle
              Nov 16 '18 at 20:10

















            • worked, thankss!!!

              – André Montório
              Nov 16 '18 at 11:16











            • Happy to help. :)

              – dmcgrandle
              Nov 16 '18 at 20:10
















            worked, thankss!!!

            – André Montório
            Nov 16 '18 at 11:16





            worked, thankss!!!

            – André Montório
            Nov 16 '18 at 11:16













            Happy to help. :)

            – dmcgrandle
            Nov 16 '18 at 20:10





            Happy to help. :)

            – dmcgrandle
            Nov 16 '18 at 20:10













            0














            I think you should use DebugElement, for example:



            it('Deve ter uma div principal', function () 
            const btnClick = fixture.debugElement.query(By.css('button'));
            btnClick.click();
            fixture.detectChanges();

            const el = fixture.debugElement.query(By.css('.lock-content'));
            console.log(el);

            expect(el).toBeTruthy();
            );


            Follow this link for more information.






            share|improve this answer





























              0














              I think you should use DebugElement, for example:



              it('Deve ter uma div principal', function () 
              const btnClick = fixture.debugElement.query(By.css('button'));
              btnClick.click();
              fixture.detectChanges();

              const el = fixture.debugElement.query(By.css('.lock-content'));
              console.log(el);

              expect(el).toBeTruthy();
              );


              Follow this link for more information.






              share|improve this answer



























                0












                0








                0







                I think you should use DebugElement, for example:



                it('Deve ter uma div principal', function () 
                const btnClick = fixture.debugElement.query(By.css('button'));
                btnClick.click();
                fixture.detectChanges();

                const el = fixture.debugElement.query(By.css('.lock-content'));
                console.log(el);

                expect(el).toBeTruthy();
                );


                Follow this link for more information.






                share|improve this answer















                I think you should use DebugElement, for example:



                it('Deve ter uma div principal', function () 
                const btnClick = fixture.debugElement.query(By.css('button'));
                btnClick.click();
                fixture.detectChanges();

                const el = fixture.debugElement.query(By.css('.lock-content'));
                console.log(el);

                expect(el).toBeTruthy();
                );


                Follow this link for more information.







                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited Nov 15 '18 at 7:36









                Rumit Patel

                1,83152435




                1,83152435










                answered Nov 15 '18 at 7:24









                AkatsukiAkatsuki

                162




                162



























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