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Angular test HostListener


How to write a test which expects an Error to be thrown in Jasmine?Angular HTML bindingAngular EXCEPTION: No provider for HttpWhat is the equivalent of ngShow and ngHide in Angular?Angular/RxJs When should I unsubscribe from `Subscription`Huge number of files generated for every Angular projectAngular 2 Unit Tests: Cannot find name 'describe'Angular2 NgModel not getting value in Jasmine testAngular: How I can test @HostListener in jasmine?Jasmine Test Cases in Angular HostListener













1















In Angular I have to test the following code:



@HostListener('document:click', ['$event'])
public onDocumentClick(event: MouseEvent): void
const targetElement = event.target as HTMLElement;
if (targetElement.classList.contains('mybtn'))
this.prop = 'ok';




The following test fails:



 it('Should succeed', () => 
const spyDocumentClick = spyOn(component, 'onDocumentClick').and.callThrough();
component.prop = '';

fixture.detectChanges();

const btn = debugElement.query(By.css('.mybtn'));
expect(btn).not.toEqual(null); // ok

btn.nativeElement.dispatchEvent(new MouseEvent('click'));

fixture.detectChanges();
expect(spyDocumentClick).toHaveBeenCalled(); // fail
expect(component.prop).toBe('ok'); //fail
);


I also tried to create dummy html element and change target of new MouseEvent



Appreciate for help










share|improve this question






















  • Just curious, have you tried btn.nativeElement.click() instead of dispatching a new MouseEvent?

    – dmcgrandle
    Mar 8 at 5:54











  • btn.nativeElement.click() does not work too. The spy not propagated for child events, only for document itself

    – Victor
    Mar 8 at 14:14















1















In Angular I have to test the following code:



@HostListener('document:click', ['$event'])
public onDocumentClick(event: MouseEvent): void
const targetElement = event.target as HTMLElement;
if (targetElement.classList.contains('mybtn'))
this.prop = 'ok';




The following test fails:



 it('Should succeed', () => 
const spyDocumentClick = spyOn(component, 'onDocumentClick').and.callThrough();
component.prop = '';

fixture.detectChanges();

const btn = debugElement.query(By.css('.mybtn'));
expect(btn).not.toEqual(null); // ok

btn.nativeElement.dispatchEvent(new MouseEvent('click'));

fixture.detectChanges();
expect(spyDocumentClick).toHaveBeenCalled(); // fail
expect(component.prop).toBe('ok'); //fail
);


I also tried to create dummy html element and change target of new MouseEvent



Appreciate for help










share|improve this question






















  • Just curious, have you tried btn.nativeElement.click() instead of dispatching a new MouseEvent?

    – dmcgrandle
    Mar 8 at 5:54











  • btn.nativeElement.click() does not work too. The spy not propagated for child events, only for document itself

    – Victor
    Mar 8 at 14:14













1












1








1


1






In Angular I have to test the following code:



@HostListener('document:click', ['$event'])
public onDocumentClick(event: MouseEvent): void
const targetElement = event.target as HTMLElement;
if (targetElement.classList.contains('mybtn'))
this.prop = 'ok';




The following test fails:



 it('Should succeed', () => 
const spyDocumentClick = spyOn(component, 'onDocumentClick').and.callThrough();
component.prop = '';

fixture.detectChanges();

const btn = debugElement.query(By.css('.mybtn'));
expect(btn).not.toEqual(null); // ok

btn.nativeElement.dispatchEvent(new MouseEvent('click'));

fixture.detectChanges();
expect(spyDocumentClick).toHaveBeenCalled(); // fail
expect(component.prop).toBe('ok'); //fail
);


I also tried to create dummy html element and change target of new MouseEvent



Appreciate for help










share|improve this question














In Angular I have to test the following code:



@HostListener('document:click', ['$event'])
public onDocumentClick(event: MouseEvent): void
const targetElement = event.target as HTMLElement;
if (targetElement.classList.contains('mybtn'))
this.prop = 'ok';




The following test fails:



 it('Should succeed', () => 
const spyDocumentClick = spyOn(component, 'onDocumentClick').and.callThrough();
component.prop = '';

fixture.detectChanges();

const btn = debugElement.query(By.css('.mybtn'));
expect(btn).not.toEqual(null); // ok

btn.nativeElement.dispatchEvent(new MouseEvent('click'));

fixture.detectChanges();
expect(spyDocumentClick).toHaveBeenCalled(); // fail
expect(component.prop).toBe('ok'); //fail
);


I also tried to create dummy html element and change target of new MouseEvent



Appreciate for help







angular jasmine






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 7 at 21:57









VictorVictor

163




163












  • Just curious, have you tried btn.nativeElement.click() instead of dispatching a new MouseEvent?

    – dmcgrandle
    Mar 8 at 5:54











  • btn.nativeElement.click() does not work too. The spy not propagated for child events, only for document itself

    – Victor
    Mar 8 at 14:14

















  • Just curious, have you tried btn.nativeElement.click() instead of dispatching a new MouseEvent?

    – dmcgrandle
    Mar 8 at 5:54











  • btn.nativeElement.click() does not work too. The spy not propagated for child events, only for document itself

    – Victor
    Mar 8 at 14:14
















Just curious, have you tried btn.nativeElement.click() instead of dispatching a new MouseEvent?

– dmcgrandle
Mar 8 at 5:54





Just curious, have you tried btn.nativeElement.click() instead of dispatching a new MouseEvent?

– dmcgrandle
Mar 8 at 5:54













btn.nativeElement.click() does not work too. The spy not propagated for child events, only for document itself

– Victor
Mar 8 at 14:14





btn.nativeElement.click() does not work too. The spy not propagated for child events, only for document itself

– Victor
Mar 8 at 14:14












1 Answer
1






active

oldest

votes


















0














Well, it works with the following code:



 it('Should succeed', () => 
const spyDocumentClick = spyOn(component, 'onDocumentClick').and.callThrough();
component.prop = '';

fixture.detectChanges();

const btn = debugElement.query(By.css('.mybtn'));
expect(btn).not.toEqual(null); // ok

const event = new MouseEvent('click',

view: window,
bubbles: true,
cancelable: true,
relatedTarget: document
);

btn.nativeElement.dispatchEvent(event);

fixture.detectChanges();
expect(spyDocumentClick).toHaveBeenCalled(); // ok
expect(component.prop).toBe('ok'); //ok
);





share|improve this answer






















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    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    0














    Well, it works with the following code:



     it('Should succeed', () => 
    const spyDocumentClick = spyOn(component, 'onDocumentClick').and.callThrough();
    component.prop = '';

    fixture.detectChanges();

    const btn = debugElement.query(By.css('.mybtn'));
    expect(btn).not.toEqual(null); // ok

    const event = new MouseEvent('click',

    view: window,
    bubbles: true,
    cancelable: true,
    relatedTarget: document
    );

    btn.nativeElement.dispatchEvent(event);

    fixture.detectChanges();
    expect(spyDocumentClick).toHaveBeenCalled(); // ok
    expect(component.prop).toBe('ok'); //ok
    );





    share|improve this answer



























      0














      Well, it works with the following code:



       it('Should succeed', () => 
      const spyDocumentClick = spyOn(component, 'onDocumentClick').and.callThrough();
      component.prop = '';

      fixture.detectChanges();

      const btn = debugElement.query(By.css('.mybtn'));
      expect(btn).not.toEqual(null); // ok

      const event = new MouseEvent('click',

      view: window,
      bubbles: true,
      cancelable: true,
      relatedTarget: document
      );

      btn.nativeElement.dispatchEvent(event);

      fixture.detectChanges();
      expect(spyDocumentClick).toHaveBeenCalled(); // ok
      expect(component.prop).toBe('ok'); //ok
      );





      share|improve this answer

























        0












        0








        0







        Well, it works with the following code:



         it('Should succeed', () => 
        const spyDocumentClick = spyOn(component, 'onDocumentClick').and.callThrough();
        component.prop = '';

        fixture.detectChanges();

        const btn = debugElement.query(By.css('.mybtn'));
        expect(btn).not.toEqual(null); // ok

        const event = new MouseEvent('click',

        view: window,
        bubbles: true,
        cancelable: true,
        relatedTarget: document
        );

        btn.nativeElement.dispatchEvent(event);

        fixture.detectChanges();
        expect(spyDocumentClick).toHaveBeenCalled(); // ok
        expect(component.prop).toBe('ok'); //ok
        );





        share|improve this answer













        Well, it works with the following code:



         it('Should succeed', () => 
        const spyDocumentClick = spyOn(component, 'onDocumentClick').and.callThrough();
        component.prop = '';

        fixture.detectChanges();

        const btn = debugElement.query(By.css('.mybtn'));
        expect(btn).not.toEqual(null); // ok

        const event = new MouseEvent('click',

        view: window,
        bubbles: true,
        cancelable: true,
        relatedTarget: document
        );

        btn.nativeElement.dispatchEvent(event);

        fixture.detectChanges();
        expect(spyDocumentClick).toHaveBeenCalled(); // ok
        expect(component.prop).toBe('ok'); //ok
        );






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Mar 8 at 14:44









        VictorVictor

        163




        163





























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