angular/packages/forms/test/directives_spec.ts

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

import {SimpleChange, ɵWritable as Writable} from '@angular/core';
import {fakeAsync, flushMicrotasks, tick} from '@angular/core/testing';
import {AbstractControl, CheckboxControlValueAccessor, ControlValueAccessor, DefaultValueAccessor, FormArray, FormArrayName, FormControl, FormControlDirective, FormControlName, FormGroup, FormGroupDirective, FormGroupName, NgControl, NgForm, NgModel, NgModelGroup, SelectControlValueAccessor, SelectMultipleControlValueAccessor, ValidationErrors, Validator, Validators} from '@angular/forms';
import {selectValueAccessor} from '@angular/forms/src/directives/shared';
import {composeValidators} from '@angular/forms/src/validators';

import {asyncValidator} from './util';

class DummyControlValueAccessor implements ControlValueAccessor {
  writtenValue: any;

  registerOnChange(fn: any) {}
  registerOnTouched(fn: any) {}

  writeValue(obj: any): void {
    this.writtenValue = obj;
  }
}

class CustomValidatorDirective implements Validator {
  validate(c: FormControl): ValidationErrors {
    return {'custom': true};
  }
}

describe('Form Directives', () => {
  let defaultAccessor: DefaultValueAccessor;

  beforeEach(() => {
    defaultAccessor = new DefaultValueAccessor(null!, null!, null!);
  });

  describe('shared', () => {
    describe('selectValueAccessor', () => {
      let dir: NgControl;

      beforeEach(() => {
        dir = {path: []} as any;
      });

      it('should throw when given an empty array', () => {
        expect(() => selectValueAccessor(dir, [])).toThrowError();
      });

      it('should throw when accessor is not provided as array', () => {
        expect(() => selectValueAccessor(dir, {} as any[]))
            .toThrowError(
                'NG01200: Value accessor was not provided as an array for form control with unspecified name attribute. Check that the \`NG_VALUE_ACCESSOR\` token is configured as a \`multi: true\` provider.');
      });

      it('should return the default value accessor when no other provided', () => {
        expect(selectValueAccessor(dir, [defaultAccessor])).toEqual(defaultAccessor);
      });

      it('should return checkbox accessor when provided', () => {
        const checkboxAccessor = new CheckboxControlValueAccessor(null!, null!);
        expect(selectValueAccessor(dir, [
          defaultAccessor, checkboxAccessor
        ])).toEqual(checkboxAccessor);
      });

      it('should return select accessor when provided', () => {
        const selectAccessor = new SelectControlValueAccessor(null!, null!);
        expect(selectValueAccessor(dir, [defaultAccessor, selectAccessor])).toEqual(selectAccessor);
      });

      it('should return select multiple accessor when provided', () => {
        const selectMultipleAccessor = new SelectMultipleControlValueAccessor(null!, null!);
        expect(selectValueAccessor(dir, [
          defaultAccessor, selectMultipleAccessor
        ])).toEqual(selectMultipleAccessor);
      });

      it('should throw when more than one build-in accessor is provided', () => {
        const checkboxAccessor = new CheckboxControlValueAccessor(null!, null!);
        const selectAccessor = new SelectControlValueAccessor(null!, null!);
        expect(() => selectValueAccessor(dir, [checkboxAccessor, selectAccessor])).toThrowError();
      });

      it('should return custom accessor when provided', () => {
        const customAccessor: ControlValueAccessor = {} as any;
        const checkboxAccessor = new CheckboxControlValueAccessor(null!, null!);
        expect(selectValueAccessor(dir, <any>[
          defaultAccessor, customAccessor, checkboxAccessor
        ])).toEqual(customAccessor);
      });

      it('should return custom accessor when provided with select multiple', () => {
        const customAccessor: ControlValueAccessor = {} as any;
        const selectMultipleAccessor = new SelectMultipleControlValueAccessor(null!, null!);
        expect(selectValueAccessor(dir, <any>[
          defaultAccessor, customAccessor, selectMultipleAccessor
        ])).toEqual(customAccessor);
      });

      it('should throw when more than one custom accessor is provided', () => {
        const customAccessor: ControlValueAccessor = {} as any;
        expect(() => selectValueAccessor(dir, [customAccessor, customAccessor])).toThrowError();
      });
    });

    describe('composeValidators', () => {
      it('should compose functions', () => {
        const dummy1 = () => ({'dummy1': true});
        const dummy2 = () => ({'dummy2': true});
        const v = composeValidators([dummy1, dummy2])!;
        expect(v(new FormControl(''))).toEqual({'dummy1': true, 'dummy2': true});
      });

      it('should compose validator directives', () => {
        const dummy1 = () => ({'dummy1': true});
        const v = composeValidators([dummy1, new CustomValidatorDirective()])!;
        expect(v(new FormControl(''))).toEqual({'dummy1': true, 'custom': true});
      });
    });
  });

  describe('formGroup', () => {
    let form: FormGroupDirective;
    let formModel: FormGroup;
    let loginControlDir: FormControlName;

    beforeEach(() => {
      form = new FormGroupDirective([], []);
      formModel = new FormGroup({
        'login': new FormControl(),
        'passwords':
            new FormGroup({'password': new FormControl(), 'passwordConfirm': new FormControl()})
      });
      form.form = formModel;

      loginControlDir = new FormControlName(
          form, [Validators.required], [asyncValidator('expected')], [defaultAccessor], null);
      loginControlDir.name = 'login';
      loginControlDir.valueAccessor = new DummyControlValueAccessor();
    });

    it('should reexport control properties', () => {
      expect(form.control).toBe(formModel);
      expect(form.value).toBe(formModel.value);
      expect(form.valid).toBe(formModel.valid);
      expect(form.invalid).toBe(formModel.invalid);
      expect(form.pending).toBe(formModel.pending);
      expect(form.errors).toBe(formModel.errors);
      expect(form.pristine).toBe(formModel.pristine);
      expect(form.dirty).toBe(formModel.dirty);
      expect(form.touched).toBe(formModel.touched);
      expect(form.untouched).toBe(formModel.untouched);
      expect(form.statusChanges).toBe(formModel.statusChanges);
      expect(form.valueChanges).toBe(formModel.valueChanges);
    });

    it('should reexport control methods', () => {
      expect(form.hasError('required')).toBe(formModel.hasError('required'));
      expect(form.getError('required')).toBe(formModel.getError('required'));

      formModel.setErrors({required: true});
      expect(form.hasError('required')).toBe(formModel.hasError('required'));
      expect(form.getError('required')).toBe(formModel.getError('required'));
    });

    describe('addControl', () => {
      it('should throw when no control found', () => {
        const dir = new FormControlName(form, null!, null!, [defaultAccessor], null);
        dir.name = 'invalidName';

        expect(() => form.addControl(dir))
            .toThrowError(new RegExp(`Cannot find control with name: 'invalidName'`));
      });

      it('should throw for a named control when no value accessor', () => {
        const dir = new FormControlName(form, null!, null!, null!, null);
        dir.name = 'login';

        expect(() => form.addControl(dir))
            .toThrowError(new RegExp(
                `NG01203: No value accessor for form control name: 'login'. Find more at https://angular.io/errors/NG01203`));
      });

      it('should throw when no value accessor with path', () => {
        const group = new FormGroupName(form, null!, null!);
        const dir = new FormControlName(group, null!, null!, null!, null);
        group.name = 'passwords';
        dir.name = 'password';

        expect(() => form.addControl(dir))
            .toThrowError(new RegExp(
                `NG01203: No value accessor for form control path: 'passwords -> password'. Find more at https://angular.io/errors/NG01203`));
      });

      it('should set up validators', fakeAsync(() => {
           form.addControl(loginControlDir);

           // sync validators are set
           expect(formModel.hasError('required', ['login'])).toBe(true);
           expect(formModel.hasError('async', ['login'])).toBe(false);

           (<FormControl>formModel.get('login')).setValue('invalid value');

           // sync validator passes, running async validators
           expect(formModel.pending).toBe(true);

           tick();

           expect(formModel.hasError('required', ['login'])).toBe(false);
           expect(formModel.hasError('async', ['login'])).toBe(true);
         }));

      it('should write value to the DOM', () => {
        (<FormControl>formModel.get(['login'])).setValue('initValue');

        form.addControl(loginControlDir);

        expect((<any>loginControlDir.valueAccessor).writtenValue).toEqual('initValue');
      });

      it('should add the directive to the list of directives included in the form', () => {
        form.addControl(loginControlDir);
        expect(form.directives).toEqual([loginControlDir]);
      });
    });

    describe('addFormGroup', () => {
      const matchingPasswordsValidator = (g: AbstractControl) => {
        const controls = (g as FormGroup).controls;
        if (controls['password'].value != controls['passwordConfirm'].value) {
          return {'differentPasswords': true};
        } else {
          return null;
        }
      };

      it('should set up validator', fakeAsync(() => {
           const group =
               new FormGroupName(form, [matchingPasswordsValidator], [asyncValidator('expected')]);
           group.name = 'passwords';
           form.addFormGroup(group);

           (<FormControl>formModel.get(['passwords', 'password'])).setValue('somePassword');
           (<FormControl>formModel.get([
             'passwords', 'passwordConfirm'
           ])).setValue('someOtherPassword');

           // sync validators are set
           expect(formModel.hasError('differentPasswords', ['passwords'])).toEqual(true);

           (<FormControl>formModel.get(['passwords', 'passwordConfirm'])).setValue('somePassword');

           // sync validators pass, running async validators
           expect(formModel.pending).toBe(true);

           tick();

           expect(formModel.hasError('async', ['passwords'])).toBe(true);
         }));
    });

    describe('removeControl', () => {
      it('should remove the directive to the list of directives included in the form', () => {
        form.addControl(loginControlDir);
        form.removeControl(loginControlDir);
        expect(form.directives).toEqual([]);
      });
    });

    describe('ngOnChanges', () => {
      it('should update dom values of all the directives', () => {
        form.addControl(loginControlDir);

        (<FormControl>formModel.get(['login'])).setValue('new value');

        form.ngOnChanges({});

        expect((<any>loginControlDir.valueAccessor).writtenValue).toEqual('new value');
      });

      it('should set up a sync validator', () => {
        const formValidator = (c: AbstractControl) => ({'custom': true});
        const f = new FormGroupDirective([formValidator], []);
        f.form = formModel;
        f.ngOnChanges({'form': new SimpleChange(null, null, false)});

        expect(formModel.errors).toEqual({'custom': true});
      });

      it('should set up an async validator', fakeAsync(() => {
           const f = new FormGroupDirective([], [asyncValidator('expected')]);
           f.form = formModel;
           f.ngOnChanges({'form': new SimpleChange(null, null, false)});

           tick();

           expect(formModel.errors).toEqual({'async': true});
         }));
    });
  });

  describe('NgForm', () => {
    let form: NgForm;
    let formModel: FormGroup;
    let loginControlDir: NgModel;
    let personControlGroupDir: NgModelGroup;

    beforeEach(() => {
      form = new NgForm([], []);
      formModel = form.form;

      personControlGroupDir = new NgModelGroup(form, [], []);
      personControlGroupDir.name = 'person';

      loginControlDir = new NgModel(personControlGroupDir, null!, null!, [defaultAccessor]);
      loginControlDir.name = 'login';
      loginControlDir.valueAccessor = new DummyControlValueAccessor();
    });

    it('should reexport control properties', () => {
      expect(form.control).toBe(formModel);
      expect(form.value).toBe(formModel.value);
      expect(form.valid).toBe(formModel.valid);
      expect(form.invalid).toBe(formModel.invalid);
      expect(form.pending).toBe(formModel.pending);
      expect(form.errors).toBe(formModel.errors);
      expect(form.pristine).toBe(formModel.pristine);
      expect(form.dirty).toBe(formModel.dirty);
      expect(form.touched).toBe(formModel.touched);
      expect(form.untouched).toBe(formModel.untouched);
      expect(form.statusChanges).toBe(formModel.statusChanges);
      expect(form.status).toBe(formModel.status);
      expect(form.valueChanges).toBe(formModel.valueChanges);
      expect(form.disabled).toBe(formModel.disabled);
      expect(form.enabled).toBe(formModel.enabled);
    });

    it('should reexport control methods', () => {
      expect(form.hasError('required')).toBe(formModel.hasError('required'));
      expect(form.getError('required')).toBe(formModel.getError('required'));

      formModel.setErrors({required: true});
      expect(form.hasError('required')).toBe(formModel.hasError('required'));
      expect(form.getError('required')).toBe(formModel.getError('required'));
    });

    describe('addControl & addFormGroup', () => {
      it('should create a control with the given name', fakeAsync(() => {
           form.addFormGroup(personControlGroupDir);
           form.addControl(loginControlDir);

           flushMicrotasks();

           expect(formModel.get(['person', 'login'])).not.toBeNull();
         }));

      // should update the form's value and validity
    });

    describe('removeControl & removeFormGroup', () => {
      it('should remove control', fakeAsync(() => {
           form.addFormGroup(personControlGroupDir);
           form.addControl(loginControlDir);

           form.removeFormGroup(personControlGroupDir);
           form.removeControl(loginControlDir);

           flushMicrotasks();

           expect(formModel.get(['person'])).toBeNull();
           expect(formModel.get(['person', 'login'])).toBeNull();
         }));

      // should update the form's value and validity
    });

    it('should set up sync validator', fakeAsync(() => {
         const formValidator = () => ({'custom': true});
         const f = new NgForm([formValidator], []);

         tick();

         expect(f.form.errors).toEqual({'custom': true});
       }));

    it('should set up async validator', fakeAsync(() => {
         const f = new NgForm([], [asyncValidator('expected')]);

         tick();

         expect(f.form.errors).toEqual({'async': true});
       }));
  });

  describe('FormGroupName', () => {
    let formModel: FormGroup;
    let controlGroupDir: FormGroupName;

    beforeEach(() => {
      formModel = new FormGroup({'login': new FormControl(null)});

      const parent = new FormGroupDirective([], []);
      parent.form = new FormGroup({'group': formModel});
      controlGroupDir = new FormGroupName(parent, [], []);
      controlGroupDir.name = 'group';
    });

    it('should reexport control properties', () => {
      expect(controlGroupDir.control).toBe(formModel);
      expect(controlGroupDir.value).toBe(formModel.value);
      expect(controlGroupDir.valid).toBe(formModel.valid);
      expect(controlGroupDir.invalid).toBe(formModel.invalid);
      expect(controlGroupDir.pending).toBe(formModel.pending);
      expect(controlGroupDir.errors).toBe(formModel.errors);
      expect(controlGroupDir.pristine).toBe(formModel.pristine);
      expect(controlGroupDir.dirty).toBe(formModel.dirty);
      expect(controlGroupDir.touched).toBe(formModel.touched);
      expect(controlGroupDir.untouched).toBe(formModel.untouched);
      expect(controlGroupDir.statusChanges).toBe(formModel.statusChanges);
      expect(controlGroupDir.status).toBe(formModel.status);
      expect(controlGroupDir.valueChanges).toBe(formModel.valueChanges);
      expect(controlGroupDir.disabled).toBe(formModel.disabled);
      expect(controlGroupDir.enabled).toBe(formModel.enabled);
    });

    it('should reexport control methods', () => {
      expect(controlGroupDir.hasError('required')).toBe(formModel.hasError('required'));
      expect(controlGroupDir.getError('required')).toBe(formModel.getError('required'));

      formModel.setErrors({required: true});
      expect(controlGroupDir.hasError('required')).toBe(formModel.hasError('required'));
      expect(controlGroupDir.getError('required')).toBe(formModel.getError('required'));
    });
  });

  describe('FormArrayName', () => {
    let formModel: FormArray;
    let formArrayDir: FormArrayName;

    beforeEach(() => {
      const parent = new FormGroupDirective([], []);
      formModel = new FormArray([new FormControl('')]);
      parent.form = new FormGroup({'array': formModel});
      formArrayDir = new FormArrayName(parent, [], []);
      formArrayDir.name = 'array';
    });

    it('should reexport control properties', () => {
      expect(formArrayDir.control).toBe(formModel);
      expect(formArrayDir.value).toBe(formModel.value);
      expect(formArrayDir.valid).toBe(formModel.valid);
      expect(formArrayDir.invalid).toBe(formModel.invalid);
      expect(formArrayDir.pending).toBe(formModel.pending);
      expect(formArrayDir.errors).toBe(formModel.errors);
      expect(formArrayDir.pristine).toBe(formModel.pristine);
      expect(formArrayDir.dirty).toBe(formModel.dirty);
      expect(formArrayDir.touched).toBe(formModel.touched);
      expect(formArrayDir.status).toBe(formModel.status);
      expect(formArrayDir.untouched).toBe(formModel.untouched);
      expect(formArrayDir.disabled).toBe(formModel.disabled);
      expect(formArrayDir.enabled).toBe(formModel.enabled);
    });

    it('should reexport control methods', () => {
      expect(formArrayDir.hasError('required')).toBe(formModel.hasError('required'));
      expect(formArrayDir.getError('required')).toBe(formModel.getError('required'));

      formModel.setErrors({required: true});
      expect(formArrayDir.hasError('required')).toBe(formModel.hasError('required'));
      expect(formArrayDir.getError('required')).toBe(formModel.getError('required'));
    });
  });

  describe('FormControlDirective', () => {
    let controlDir: FormControlDirective;
    let control: FormControl;
    const checkProperties = function(control: FormControl) {
      expect(controlDir.control).toBe(control);
      expect(controlDir.value).toBe(control.value);
      expect(controlDir.valid).toBe(control.valid);
      expect(controlDir.invalid).toBe(control.invalid);
      expect(controlDir.pending).toBe(control.pending);
      expect(controlDir.errors).toBe(control.errors);
      expect(controlDir.pristine).toBe(control.pristine);
      expect(controlDir.dirty).toBe(control.dirty);
      expect(controlDir.touched).toBe(control.touched);
      expect(controlDir.untouched).toBe(control.untouched);
      expect(controlDir.statusChanges).toBe(control.statusChanges);
      expect(controlDir.status).toBe(control.status);
      expect(controlDir.valueChanges).toBe(control.valueChanges);
      expect(controlDir.disabled).toBe(control.disabled);
      expect(controlDir.enabled).toBe(control.enabled);
    };

    beforeEach(() => {
      controlDir = new FormControlDirective([Validators.required], [], [defaultAccessor], null);
      controlDir.valueAccessor = new DummyControlValueAccessor();

      control = new FormControl(null);
      controlDir.form = control;
    });

    it('should reexport control properties', () => {
      checkProperties(control);
    });

    it('should reexport control methods', () => {
      expect(controlDir.hasError('required')).toBe(control.hasError('required'));
      expect(controlDir.getError('required')).toBe(control.getError('required'));

      control.setErrors({required: true});
      expect(controlDir.hasError('required')).toBe(control.hasError('required'));
      expect(controlDir.getError('required')).toBe(control.getError('required'));
    });

    it('should reexport new control properties', () => {
      const newControl = new FormControl(null);
      controlDir.form = newControl;
      controlDir.ngOnChanges({'form': new SimpleChange(control, newControl, false)});

      checkProperties(newControl);
    });

    it('should set up validator', () => {
      expect(control.valid).toBe(true);

      // this will add the required validator and recalculate the validity
      controlDir.ngOnChanges({'form': new SimpleChange(null, control, false)});

      expect(control.valid).toBe(false);
    });
  });

  describe('NgModel', () => {
    let ngModel: NgModel;
    let control: FormControl;

    beforeEach(() => {
      ngModel = new NgModel(
          null!, [Validators.required], [asyncValidator('expected')], [defaultAccessor]);
      ngModel.valueAccessor = new DummyControlValueAccessor();
      control = ngModel.control;
    });

    it('should reexport control properties', () => {
      expect(ngModel.control).toBe(control);
      expect(ngModel.value).toBe(control.value);
      expect(ngModel.valid).toBe(control.valid);
      expect(ngModel.invalid).toBe(control.invalid);
      expect(ngModel.pending).toBe(control.pending);
      expect(ngModel.errors).toBe(control.errors);
      expect(ngModel.pristine).toBe(control.pristine);
      expect(ngModel.dirty).toBe(control.dirty);
      expect(ngModel.touched).toBe(control.touched);
      expect(ngModel.untouched).toBe(control.untouched);
      expect(ngModel.statusChanges).toBe(control.statusChanges);
      expect(ngModel.status).toBe(control.status);
      expect(ngModel.valueChanges).toBe(control.valueChanges);
      expect(ngModel.disabled).toBe(control.disabled);
      expect(ngModel.enabled).toBe(control.enabled);
    });

    it('should reexport control methods', () => {
      expect(ngModel.hasError('required')).toBe(control.hasError('required'));
      expect(ngModel.getError('required')).toBe(control.getError('required'));

      control.setErrors({required: true});
      expect(ngModel.hasError('required')).toBe(control.hasError('required'));
      expect(ngModel.getError('required')).toBe(control.getError('required'));
    });

    it('should throw when no value accessor with named control', () => {
      const namedDir = new NgModel(null!, null!, null!, null!);
      namedDir.name = 'one';

      expect(() => namedDir.ngOnChanges({}))
          .toThrowError(new RegExp(
              `NG01203: No value accessor for form control name: 'one'. Find more at https://angular.io/errors/NG01203`));
    });

    it('should throw when no value accessor with unnamed control', () => {
      const unnamedDir = new NgModel(null!, null!, null!, null!);

      expect(() => unnamedDir.ngOnChanges({}))
          .toThrowError(new RegExp(
              `NG01203: No value accessor for form control unspecified name attribute. Find more at https://angular.io/errors/NG01203`));
    });

    it('should set up validator', fakeAsync(() => {
         // this will add the required validator and recalculate the validity
         ngModel.ngOnChanges({});
         tick();

         expect(ngModel.control.errors).toEqual({'required': true});

         ngModel.control.setValue('someValue');
         tick();

         expect(ngModel.control.errors).toEqual({'async': true});
       }));

    it('should mark as disabled properly', fakeAsync(() => {
         ngModel.ngOnChanges({isDisabled: new SimpleChange('', undefined, false)});
         tick();
         expect(ngModel.control.disabled).toEqual(false);

         ngModel.ngOnChanges({isDisabled: new SimpleChange('', null, false)});
         tick();
         expect(ngModel.control.disabled).toEqual(false);

         ngModel.ngOnChanges({isDisabled: new SimpleChange('', false, false)});
         tick();
         expect(ngModel.control.disabled).toEqual(false);

         ngModel.ngOnChanges({isDisabled: new SimpleChange('', 'false', false)});
         tick();
         expect(ngModel.control.disabled).toEqual(false);

         ngModel.ngOnChanges({isDisabled: new SimpleChange('', 0, false)});
         tick();
         expect(ngModel.control.disabled).toEqual(false);

         ngModel.ngOnChanges({isDisabled: new SimpleChange(null, '', false)});
         tick();
         expect(ngModel.control.disabled).toEqual(true);

         ngModel.ngOnChanges({isDisabled: new SimpleChange(null, 'true', false)});
         tick();
         expect(ngModel.control.disabled).toEqual(true);

         ngModel.ngOnChanges({isDisabled: new SimpleChange(null, true, false)});
         tick();
         expect(ngModel.control.disabled).toEqual(true);

         ngModel.ngOnChanges({isDisabled: new SimpleChange(null, 'anything else', false)});
         tick();
         expect(ngModel.control.disabled).toEqual(true);
       }));
  });

  describe('FormControlName', () => {
    let formModel: FormControl;
    let controlNameDir: FormControlName;

    beforeEach(() => {
      formModel = new FormControl('name');

      const parent = new FormGroupDirective([], []);
      parent.form = new FormGroup({'name': formModel});
      controlNameDir = new FormControlName(parent, [], [], [defaultAccessor], null);
      controlNameDir.name = 'name';
      (controlNameDir as Writable<FormControlName>).control = formModel;
    });

    it('should reexport control properties', () => {
      expect(controlNameDir.control).toBe(formModel);
      expect(controlNameDir.value).toBe(formModel.value);
      expect(controlNameDir.valid).toBe(formModel.valid);
      expect(controlNameDir.invalid).toBe(formModel.invalid);
      expect(controlNameDir.pending).toBe(formModel.pending);
      expect(controlNameDir.errors).toBe(formModel.errors);
      expect(controlNameDir.pristine).toBe(formModel.pristine);
      expect(controlNameDir.dirty).toBe(formModel.dirty);
      expect(controlNameDir.touched).toBe(formModel.touched);
      expect(controlNameDir.untouched).toBe(formModel.untouched);
      expect(controlNameDir.statusChanges).toBe(formModel.statusChanges);
      expect(controlNameDir.status).toBe(formModel.status);
      expect(controlNameDir.valueChanges).toBe(formModel.valueChanges);
      expect(controlNameDir.disabled).toBe(formModel.disabled);
      expect(controlNameDir.enabled).toBe(formModel.enabled);
    });

    it('should reexport control methods', () => {
      expect(controlNameDir.hasError('required')).toBe(formModel.hasError('required'));
      expect(controlNameDir.getError('required')).toBe(formModel.getError('required'));

      formModel.setErrors({required: true});
      expect(controlNameDir.hasError('required')).toBe(formModel.hasError('required'));
      expect(controlNameDir.getError('required')).toBe(formModel.getError('required'));
    });
  });
});