How to test FormGroupDirective in component?












1















I've some problems to tests component with FormGroupDirective in viewProviders.
Can't create mock of parent and set empty formGroup.



My component:



@Component({
(...)
viewProviders: [
{
provide: ControlContainer, useExisting: FormGroupDirective
}
]
})
export class SomeNestedFormComponent implements OnInit {
form: FormGroup;

constructor(private fb: FormBuilder, private parent: FormGroupDirective) {}

ngOnInit() {
this.form = this.parent.form;
this.form.addControl('field', this.createSomeFormGroup());
}
}


Spec:



describe('SomeNestedFormComponent', () => {
let component: SomeNestedFormComponent;
let fixture: ComponentFixture<SomeNestedFormComponent>;
let formGroupDirective: Partial<FormGroupDirective>;

beforeEach(async(() => {
formGroupDirective = {
form: new FormGroup({})
};

TestBed.configureTestingModule({
imports: [
SharedModule,
FormsModule,
ReactiveFormsModule
],
declarations: [SomeNestedFormComponent],
providers:
})
.overrideComponent(PermissionListComponent, {
set: {
viewProviders: [
{
provide: FormGroupDirective, useValue: formGroupDirective
}
]
}
})
.compileComponents()
.then(() => {
fixture = TestBed.createComponent(SomeNestedFormComponent);
component = fixture.componentInstance;
component.ngOnInit();
fixture.detectChanges();
});
}));

it('should create', () => {
expect(component).toBeTruthy();
});
});


This throw: Error: formGroupName must be used with a parent formGroup directive. (...)
Try to handle FormGroupDirective as a service with spyOn, but it throws TypeError: this.form.addControl is not a function



describe('SomeNestedFormComponent', () => {
(...)
let fgdSpy: jasmine.SpyObj<SomeNestedFormComponent>;

beforeEach(async(() => {
const FGDirectiveSpy = jasmine.createSpyObj('FormGroupDirective', ['form', 'addControl']);

TestBed.configureTestingModule({
(...)
providers: [
{provide: FormGroupDirective, useValue: FGDirectiveSpy}
]
})
.compileComponents()
.then(() => {
fgdSpy = TestBed.get(FormGroupDirective);
(...)
});


Is there any way to test that component?










share|improve this question



























    1















    I've some problems to tests component with FormGroupDirective in viewProviders.
    Can't create mock of parent and set empty formGroup.



    My component:



    @Component({
    (...)
    viewProviders: [
    {
    provide: ControlContainer, useExisting: FormGroupDirective
    }
    ]
    })
    export class SomeNestedFormComponent implements OnInit {
    form: FormGroup;

    constructor(private fb: FormBuilder, private parent: FormGroupDirective) {}

    ngOnInit() {
    this.form = this.parent.form;
    this.form.addControl('field', this.createSomeFormGroup());
    }
    }


    Spec:



    describe('SomeNestedFormComponent', () => {
    let component: SomeNestedFormComponent;
    let fixture: ComponentFixture<SomeNestedFormComponent>;
    let formGroupDirective: Partial<FormGroupDirective>;

    beforeEach(async(() => {
    formGroupDirective = {
    form: new FormGroup({})
    };

    TestBed.configureTestingModule({
    imports: [
    SharedModule,
    FormsModule,
    ReactiveFormsModule
    ],
    declarations: [SomeNestedFormComponent],
    providers:
    })
    .overrideComponent(PermissionListComponent, {
    set: {
    viewProviders: [
    {
    provide: FormGroupDirective, useValue: formGroupDirective
    }
    ]
    }
    })
    .compileComponents()
    .then(() => {
    fixture = TestBed.createComponent(SomeNestedFormComponent);
    component = fixture.componentInstance;
    component.ngOnInit();
    fixture.detectChanges();
    });
    }));

    it('should create', () => {
    expect(component).toBeTruthy();
    });
    });


    This throw: Error: formGroupName must be used with a parent formGroup directive. (...)
    Try to handle FormGroupDirective as a service with spyOn, but it throws TypeError: this.form.addControl is not a function



    describe('SomeNestedFormComponent', () => {
    (...)
    let fgdSpy: jasmine.SpyObj<SomeNestedFormComponent>;

    beforeEach(async(() => {
    const FGDirectiveSpy = jasmine.createSpyObj('FormGroupDirective', ['form', 'addControl']);

    TestBed.configureTestingModule({
    (...)
    providers: [
    {provide: FormGroupDirective, useValue: FGDirectiveSpy}
    ]
    })
    .compileComponents()
    .then(() => {
    fgdSpy = TestBed.get(FormGroupDirective);
    (...)
    });


    Is there any way to test that component?










    share|improve this question

























      1












      1








      1


      1






      I've some problems to tests component with FormGroupDirective in viewProviders.
      Can't create mock of parent and set empty formGroup.



      My component:



      @Component({
      (...)
      viewProviders: [
      {
      provide: ControlContainer, useExisting: FormGroupDirective
      }
      ]
      })
      export class SomeNestedFormComponent implements OnInit {
      form: FormGroup;

      constructor(private fb: FormBuilder, private parent: FormGroupDirective) {}

      ngOnInit() {
      this.form = this.parent.form;
      this.form.addControl('field', this.createSomeFormGroup());
      }
      }


      Spec:



      describe('SomeNestedFormComponent', () => {
      let component: SomeNestedFormComponent;
      let fixture: ComponentFixture<SomeNestedFormComponent>;
      let formGroupDirective: Partial<FormGroupDirective>;

      beforeEach(async(() => {
      formGroupDirective = {
      form: new FormGroup({})
      };

      TestBed.configureTestingModule({
      imports: [
      SharedModule,
      FormsModule,
      ReactiveFormsModule
      ],
      declarations: [SomeNestedFormComponent],
      providers:
      })
      .overrideComponent(PermissionListComponent, {
      set: {
      viewProviders: [
      {
      provide: FormGroupDirective, useValue: formGroupDirective
      }
      ]
      }
      })
      .compileComponents()
      .then(() => {
      fixture = TestBed.createComponent(SomeNestedFormComponent);
      component = fixture.componentInstance;
      component.ngOnInit();
      fixture.detectChanges();
      });
      }));

      it('should create', () => {
      expect(component).toBeTruthy();
      });
      });


      This throw: Error: formGroupName must be used with a parent formGroup directive. (...)
      Try to handle FormGroupDirective as a service with spyOn, but it throws TypeError: this.form.addControl is not a function



      describe('SomeNestedFormComponent', () => {
      (...)
      let fgdSpy: jasmine.SpyObj<SomeNestedFormComponent>;

      beforeEach(async(() => {
      const FGDirectiveSpy = jasmine.createSpyObj('FormGroupDirective', ['form', 'addControl']);

      TestBed.configureTestingModule({
      (...)
      providers: [
      {provide: FormGroupDirective, useValue: FGDirectiveSpy}
      ]
      })
      .compileComponents()
      .then(() => {
      fgdSpy = TestBed.get(FormGroupDirective);
      (...)
      });


      Is there any way to test that component?










      share|improve this question














      I've some problems to tests component with FormGroupDirective in viewProviders.
      Can't create mock of parent and set empty formGroup.



      My component:



      @Component({
      (...)
      viewProviders: [
      {
      provide: ControlContainer, useExisting: FormGroupDirective
      }
      ]
      })
      export class SomeNestedFormComponent implements OnInit {
      form: FormGroup;

      constructor(private fb: FormBuilder, private parent: FormGroupDirective) {}

      ngOnInit() {
      this.form = this.parent.form;
      this.form.addControl('field', this.createSomeFormGroup());
      }
      }


      Spec:



      describe('SomeNestedFormComponent', () => {
      let component: SomeNestedFormComponent;
      let fixture: ComponentFixture<SomeNestedFormComponent>;
      let formGroupDirective: Partial<FormGroupDirective>;

      beforeEach(async(() => {
      formGroupDirective = {
      form: new FormGroup({})
      };

      TestBed.configureTestingModule({
      imports: [
      SharedModule,
      FormsModule,
      ReactiveFormsModule
      ],
      declarations: [SomeNestedFormComponent],
      providers:
      })
      .overrideComponent(PermissionListComponent, {
      set: {
      viewProviders: [
      {
      provide: FormGroupDirective, useValue: formGroupDirective
      }
      ]
      }
      })
      .compileComponents()
      .then(() => {
      fixture = TestBed.createComponent(SomeNestedFormComponent);
      component = fixture.componentInstance;
      component.ngOnInit();
      fixture.detectChanges();
      });
      }));

      it('should create', () => {
      expect(component).toBeTruthy();
      });
      });


      This throw: Error: formGroupName must be used with a parent formGroup directive. (...)
      Try to handle FormGroupDirective as a service with spyOn, but it throws TypeError: this.form.addControl is not a function



      describe('SomeNestedFormComponent', () => {
      (...)
      let fgdSpy: jasmine.SpyObj<SomeNestedFormComponent>;

      beforeEach(async(() => {
      const FGDirectiveSpy = jasmine.createSpyObj('FormGroupDirective', ['form', 'addControl']);

      TestBed.configureTestingModule({
      (...)
      providers: [
      {provide: FormGroupDirective, useValue: FGDirectiveSpy}
      ]
      })
      .compileComponents()
      .then(() => {
      fgdSpy = TestBed.get(FormGroupDirective);
      (...)
      });


      Is there any way to test that component?







      angular typescript unit-testing karma-jasmine angular7






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 22 '18 at 8:51









      Blazej456Blazej456

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      133
























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