angular-docs-cn/modules/@angular/forms/test/reactive_integration_spec.ts

/**
 * @license
 * Copyright Google Inc. 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 {NgFor, NgIf} from '@angular/common';
import {Component, Directive, EventEmitter, Input, Output, forwardRef} from '@angular/core';
import {ComponentFixture, TestComponentBuilder, configureModule, fakeAsync, flushMicrotasks, tick} from '@angular/core/testing';
import {AsyncTestCompleter, afterEach, beforeEach, ddescribe, describe, expect, iit, inject, it, xdescribe, xit} from '@angular/core/testing/testing_internal';
import {ControlValueAccessor, FormArray, FormControl, FormGroup, FormsModule, NG_ASYNC_VALIDATORS, NG_VALIDATORS, NgControl, ReactiveFormsModule, Validator, Validators} from '@angular/forms';
import {By} from '@angular/platform-browser/src/dom/debug/by';
import {getDOM} from '@angular/platform-browser/src/dom/dom_adapter';
import {dispatchEvent} from '@angular/platform-browser/testing/browser_util';

import {ObservableWrapper} from '../src/facade/async';
import {ListWrapper} from '../src/facade/collection';
import {PromiseWrapper} from '../src/facade/promise';

export function main() {
  describe('reactive forms integration tests', () => {

    beforeEach(() => { configureModule({imports: [FormsModule, ReactiveFormsModule]}); });

    it('should initialize DOM elements with the given form object',
       inject(
           [TestComponentBuilder, AsyncTestCompleter],
           (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
             const t = `<div [formGroup]="form">
                <input type="text" formControlName="login">
               </div>`;

             tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
               fixture.debugElement.componentInstance.form =
                   new FormGroup({'login': new FormControl('loginValue')});
               fixture.detectChanges();

               var input = fixture.debugElement.query(By.css('input'));
               expect(input.nativeElement.value).toEqual('loginValue');
               async.done();
             });
           }));

    it('should update the form group values on DOM change',
       inject(
           [TestComponentBuilder, AsyncTestCompleter],
           (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
             var form = new FormGroup({'login': new FormControl('oldValue')});

             const t = `<div [formGroup]="form">
                <input type="text" formControlName="login">
              </div>`;

             tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
               fixture.debugElement.componentInstance.form = form;
               fixture.detectChanges();
               var input = fixture.debugElement.query(By.css('input'));

               input.nativeElement.value = 'updatedValue';
               dispatchEvent(input.nativeElement, 'input');

               expect(form.value).toEqual({'login': 'updatedValue'});
               async.done();
             });
           }));

    it('should ignore the change event for <input type=text>',
       inject(
           [TestComponentBuilder, AsyncTestCompleter],
           (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
             var form = new FormGroup({'login': new FormControl('oldValue')});

             const t = `<div [formGroup]="form">
                <input type="text" formControlName="login">
              </div>`;

             tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
               fixture.debugElement.componentInstance.form = form;
               fixture.detectChanges();
               var input = fixture.debugElement.query(By.css('input'));

               input.nativeElement.value = 'updatedValue';

               ObservableWrapper.subscribe(
                   form.valueChanges, (value) => { throw 'Should not happen'; });
               dispatchEvent(input.nativeElement, 'change');

               async.done();
             });
           }));

    it('should emit ngSubmit event on submit',
       fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
         const t = `<div>
                      <form [formGroup]="form" (ngSubmit)="name='updated'"></form>
                      <span>{{name}}</span>
                    </div>`;

         let fixture = tcb.overrideTemplate(MyComp8, t).createFakeAsync(MyComp8);
         tick();

         fixture.debugElement.componentInstance.form = new FormGroup({});
         fixture.debugElement.componentInstance.name = 'old';

         tick();

         var form = fixture.debugElement.query(By.css('form'));
         dispatchEvent(form.nativeElement, 'submit');

         tick();
         expect(fixture.debugElement.componentInstance.name).toEqual('updated');
       })));

    it('should mark formGroup as submitted on submit event',
       inject([TestComponentBuilder], fakeAsync((tcb: TestComponentBuilder) => {
                const t = `<div>
                      <form #f="ngForm" [formGroup]="form" (ngSubmit)="data=f.submitted"></form>
                      <span>{{data}}</span>
                    </div>`;

                var fixture: ComponentFixture<MyComp8>;

                tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((root) => {
                  fixture = root;
                });
                tick();

                fixture.debugElement.componentInstance.form = new FormGroup({});
                fixture.debugElement.componentInstance.data = false;

                tick();

                var form = fixture.debugElement.query(By.css('form'));
                dispatchEvent(form.nativeElement, 'submit');

                tick();
                expect(fixture.debugElement.componentInstance.data).toEqual(true);
              })));

    it('should work with single controls',
       inject(
           [TestComponentBuilder, AsyncTestCompleter],
           (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
             var control = new FormControl('loginValue');

             const t = `<div><input type="text" [formControl]="form"></div>`;

             tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
               fixture.debugElement.componentInstance.form = control;
               fixture.detectChanges();

               var input = fixture.debugElement.query(By.css('input'));
               expect(input.nativeElement.value).toEqual('loginValue');

               input.nativeElement.value = 'updatedValue';
               dispatchEvent(input.nativeElement, 'input');

               expect(control.value).toEqual('updatedValue');
               async.done();
             });
           }));

    it('should update DOM elements when rebinding the form group',
       inject(
           [TestComponentBuilder, AsyncTestCompleter],
           (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
             const t = `<div [formGroup]="form">
                <input type="text" formControlName="login">
               </div>`;

             tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
               fixture.debugElement.componentInstance.form =
                   new FormGroup({'login': new FormControl('oldValue')});
               fixture.detectChanges();

               fixture.debugElement.componentInstance.form =
                   new FormGroup({'login': new FormControl('newValue')});
               fixture.detectChanges();

               var input = fixture.debugElement.query(By.css('input'));
               expect(input.nativeElement.value).toEqual('newValue');
               async.done();
             });
           }));

    it('should update DOM elements when updating the value of a control',
       inject(
           [TestComponentBuilder, AsyncTestCompleter],
           (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
             var login = new FormControl('oldValue');
             var form = new FormGroup({'login': login});

             const t = `<div [formGroup]="form">
                <input type="text" formControlName="login">
               </div>`;

             tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
               fixture.debugElement.componentInstance.form = form;
               fixture.detectChanges();

               login.updateValue('newValue');

               fixture.detectChanges();

               var input = fixture.debugElement.query(By.css('input'));
               expect(input.nativeElement.value).toEqual('newValue');
               async.done();
             });
           }));

    it('should mark controls as touched after interacting with the DOM control',
       inject(
           [TestComponentBuilder, AsyncTestCompleter],
           (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
             var login = new FormControl('oldValue');
             var form = new FormGroup({'login': login});

             const t = `<div [formGroup]="form">
                <input type="text" formControlName="login">
               </div>`;

             tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
               fixture.debugElement.componentInstance.form = form;
               fixture.detectChanges();

               var loginEl = fixture.debugElement.query(By.css('input'));
               expect(login.touched).toBe(false);

               dispatchEvent(loginEl.nativeElement, 'blur');

               expect(login.touched).toBe(true);

               async.done();
             });
           }));

    it('should clear value in UI when form resets programmatically',
       inject(
           [TestComponentBuilder, AsyncTestCompleter],
           (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
             const login = new FormControl('oldValue');
             const form = new FormGroup({'login': login});

             const t = `<div [formGroup]="form">
                <input type="text" formControlName="login">
               </div>`;

             tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
               fixture.debugElement.componentInstance.form = form;
               fixture.detectChanges();

               login.updateValue('new value');

               const loginEl = fixture.debugElement.query(By.css('input')).nativeElement;
               expect(loginEl.value).toBe('new value');

               form.reset();
               expect(loginEl.value).toBe('');
               async.done();
             });
           }));

    it('should set value in UI when form resets to that value programmatically',
       inject(
           [TestComponentBuilder, AsyncTestCompleter],
           (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
             const login = new FormControl('oldValue');
             const form = new FormGroup({'login': login});

             const t = `<div [formGroup]="form">
                <input type="text" formControlName="login">
               </div>`;

             tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
               fixture.debugElement.componentInstance.form = form;
               fixture.detectChanges();

               login.updateValue('new value');

               const loginEl = fixture.debugElement.query(By.css('input')).nativeElement;
               expect(loginEl.value).toBe('new value');

               form.reset({'login': 'oldValue'});

               expect(loginEl.value).toBe('oldValue');
               async.done();
             });
           }));

    it('should support form arrays',
       fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
         const cityArray = new FormArray([new FormControl('SF'), new FormControl('NY')]);
         const form = new FormGroup({cities: cityArray});

         const t = `<div [formGroup]="form">
                <div formArrayName="cities">
                  <div *ngFor="let city of cityArray.controls; let i=index">
                    <input [formControlName]="i">
                  </div>
                </div>
               </div>`;

         tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
           fixture.debugElement.componentInstance.form = form;
           fixture.debugElement.componentInstance.cityArray = cityArray;
           fixture.detectChanges();
           tick();

           const inputs = fixture.debugElement.queryAll(By.css('input'));
           expect(inputs[0].nativeElement.value).toEqual('SF');
           expect(inputs[1].nativeElement.value).toEqual('NY');
           expect(fixture.componentInstance.form.value).toEqual({cities: ['SF', 'NY']});

           inputs[0].nativeElement.value = 'LA';
           dispatchEvent(inputs[0].nativeElement, 'input');

           fixture.detectChanges();
           tick();

           expect(fixture.componentInstance.form.value).toEqual({cities: ['LA', 'NY']});

         });
       })));

    it('should support pushing new controls to form arrays',
       fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
         const cityArray = new FormArray([new FormControl('SF'), new FormControl('NY')]);
         const form = new FormGroup({cities: cityArray});

         const t = `<div [formGroup]="form">
                <div formArrayName="cities">
                  <div *ngFor="let city of cityArray.controls; let i=index">
                    <input [formControlName]="i">
                  </div>
                </div>
               </div>`;

         tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
           fixture.debugElement.componentInstance.form = form;
           fixture.debugElement.componentInstance.cityArray = cityArray;
           fixture.detectChanges();
           tick();

           cityArray.push(new FormControl('LA'));
           fixture.detectChanges();
           tick();

           const inputs = fixture.debugElement.queryAll(By.css('input'));
           expect(inputs[2].nativeElement.value).toEqual('LA');
           expect(fixture.componentInstance.form.value).toEqual({cities: ['SF', 'NY', 'LA']});

         });
       })));

    describe('different control types', () => {
      it('should support <input type=text>',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<div [formGroup]="form">
                  <input type="text" formControlName="text">
                </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new FormGroup({'text': new FormControl('old')});
                 fixture.detectChanges();

                 var input = fixture.debugElement.query(By.css('input'));
                 expect(input.nativeElement.value).toEqual('old');

                 input.nativeElement.value = 'new';
                 dispatchEvent(input.nativeElement, 'input');

                 expect(fixture.debugElement.componentInstance.form.value).toEqual({'text': 'new'});
                 async.done();
               });
             }));

      it('should support <input> without type',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<div [formGroup]="form">
                  <input formControlName="text">
                </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new FormGroup({'text': new FormControl('old')});
                 fixture.detectChanges();
                 var input = fixture.debugElement.query(By.css('input'));
                 expect(input.nativeElement.value).toEqual('old');

                 input.nativeElement.value = 'new';
                 dispatchEvent(input.nativeElement, 'input');

                 expect(fixture.debugElement.componentInstance.form.value).toEqual({'text': 'new'});
                 async.done();
               });
             }));

      it('should support <textarea>',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<div [formGroup]="form">
                  <textarea formControlName="text"></textarea>
                </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new FormGroup({'text': new FormControl('old')});
                 fixture.detectChanges();

                 var textarea = fixture.debugElement.query(By.css('textarea'));
                 expect(textarea.nativeElement.value).toEqual('old');

                 textarea.nativeElement.value = 'new';
                 dispatchEvent(textarea.nativeElement, 'input');

                 expect(fixture.debugElement.componentInstance.form.value).toEqual({'text': 'new'});
                 async.done();
               });
             }));

      it('should support <type=checkbox>',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<div [formGroup]="form">
                  <input type="checkbox" formControlName="checkbox">
                </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new FormGroup({'checkbox': new FormControl(true)});
                 fixture.detectChanges();

                 var input = fixture.debugElement.query(By.css('input'));
                 expect(input.nativeElement.checked).toBe(true);

                 input.nativeElement.checked = false;
                 dispatchEvent(input.nativeElement, 'change');

                 expect(fixture.debugElement.componentInstance.form.value).toEqual({
                   'checkbox': false
                 });
                 async.done();
               });
             }));

      it('should support <type=number>',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<div [formGroup]="form">
                  <input type="number" formControlName="num">
                </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new FormGroup({'num': new FormControl(10)});
                 fixture.detectChanges();

                 var input = fixture.debugElement.query(By.css('input'));
                 expect(input.nativeElement.value).toEqual('10');

                 input.nativeElement.value = '20';
                 dispatchEvent(input.nativeElement, 'input');

                 expect(fixture.debugElement.componentInstance.form.value).toEqual({'num': 20});
                 async.done();
               });
             }));

      it('should support <type=number> when value is cleared in the UI',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<div [formGroup]="form">
                  <input type="number" formControlName="num" required>
                </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new FormGroup({'num': new FormControl(10)});
                 fixture.detectChanges();

                 var input = fixture.debugElement.query(By.css('input'));
                 input.nativeElement.value = '';
                 dispatchEvent(input.nativeElement, 'input');

                 expect(fixture.debugElement.componentInstance.form.valid).toBe(false);
                 expect(fixture.debugElement.componentInstance.form.value).toEqual({'num': null});

                 input.nativeElement.value = '0';
                 dispatchEvent(input.nativeElement, 'input');

                 expect(fixture.debugElement.componentInstance.form.valid).toBe(true);
                 expect(fixture.debugElement.componentInstance.form.value).toEqual({'num': 0});
                 async.done();
               });
             }));


      it('should support <type=number> when value is cleared programmatically',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               var form = new FormGroup({'num': new FormControl(10)});
               const t = `<div [formGroup]="form">
                  <input type="number" formControlName="num" [(ngModel)]="data">
                </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form = form;
                 fixture.debugElement.componentInstance.data = null;
                 fixture.detectChanges();

                 var input = fixture.debugElement.query(By.css('input'));
                 expect(input.nativeElement.value).toEqual('');

                 async.done();
               });
             }));

      it('should support <type=radio>',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<form [formGroup]="form">
                  <input type="radio" formControlName="food" value="chicken">
                  <input type="radio" formControlName="food" value="fish">
                </form>`;

               const ctrl = new FormControl('fish');
               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form = new FormGroup({'food': ctrl});
                 fixture.detectChanges();

                 var inputs = fixture.debugElement.queryAll(By.css('input'));
                 expect(inputs[0].nativeElement.checked).toEqual(false);
                 expect(inputs[1].nativeElement.checked).toEqual(true);

                 dispatchEvent(inputs[0].nativeElement, 'change');
                 fixture.detectChanges();

                 let value = fixture.debugElement.componentInstance.form.value;
                 expect(value.food).toEqual('chicken');
                 expect(inputs[1].nativeElement.checked).toEqual(false);

                 ctrl.updateValue('fish');
                 fixture.detectChanges();

                 expect(inputs[0].nativeElement.checked).toEqual(false);
                 expect(inputs[1].nativeElement.checked).toEqual(true);

                 async.done();
               });
             }));

      it('should use formControlName to group radio buttons when name is absent',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<form [formGroup]="form">
                  <input type="radio" formControlName="food" value="chicken">
                  <input type="radio" formControlName="food" value="fish">
                  <input type="radio" formControlName="drink" value="cola">
                  <input type="radio" formControlName="drink" value="sprite">
                </form>`;

               const foodCtrl = new FormControl('fish');
               const drinkCtrl = new FormControl('sprite');
               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new FormGroup({'food': foodCtrl, 'drink': drinkCtrl});
                 fixture.detectChanges();

                 const inputs = fixture.debugElement.queryAll(By.css('input'));
                 expect(inputs[0].nativeElement.checked).toEqual(false);
                 expect(inputs[1].nativeElement.checked).toEqual(true);
                 expect(inputs[2].nativeElement.checked).toEqual(false);
                 expect(inputs[3].nativeElement.checked).toEqual(true);

                 dispatchEvent(inputs[0].nativeElement, 'change');
                 inputs[0].nativeElement.checked = true;
                 fixture.detectChanges();

                 const value = fixture.debugElement.componentInstance.form.value;
                 expect(value.food).toEqual('chicken');
                 expect(inputs[1].nativeElement.checked).toEqual(false);
                 expect(inputs[2].nativeElement.checked).toEqual(false);
                 expect(inputs[3].nativeElement.checked).toEqual(true);

                 drinkCtrl.updateValue('cola');
                 fixture.detectChanges();

                 expect(inputs[0].nativeElement.checked).toEqual(true);
                 expect(inputs[1].nativeElement.checked).toEqual(false);
                 expect(inputs[2].nativeElement.checked).toEqual(true);
                 expect(inputs[3].nativeElement.checked).toEqual(false);

                 async.done();
               });
             }));

      it('should support removing controls from <type=radio>',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `
                <input type="radio" [formControl]="showRadio" value="yes">
                <input type="radio" [formControl]="showRadio" value="no">
                <form [formGroup]="form">
                  <div *ngIf="showRadio.value === 'yes'">
                    <input type="radio" formControlName="food" value="chicken">
                    <input type="radio" formControlName="food" value="fish">
                  </div>
                </form>`;

               const ctrl = new FormControl('fish');
               const showRadio = new FormControl('yes');
               const form = new FormGroup({'food': ctrl});

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form = form;
                 fixture.debugElement.componentInstance.showRadio = showRadio;
                 showRadio.valueChanges.subscribe((change) => {
                   (change === 'yes') ? form.addControl('food', new FormControl('fish')) :
                                        form.removeControl('food');
                 });
                 fixture.detectChanges();

                 const input = fixture.debugElement.query(By.css('[value="no"]'));
                 dispatchEvent(input.nativeElement, 'change');

                 fixture.detectChanges();
                 expect(form.value).toEqual({});
                 async.done();
               });
             }));

      describe('should support <select>', () => {
        it('with basic selection',
           inject(
               [TestComponentBuilder, AsyncTestCompleter],
               (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
                 const t = `<select>
                      <option value="SF"></option>
                      <option value="NYC"></option>
                    </select>`;

                 tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                   fixture.detectChanges();

                   var select = fixture.debugElement.query(By.css('select'));
                   var sfOption = fixture.debugElement.query(By.css('option'));

                   expect(select.nativeElement.value).toEqual('SF');
                   expect(sfOption.nativeElement.selected).toBe(true);
                   async.done();
                 });
               }));

        it('with basic selection and value bindings',
           inject(
               [TestComponentBuilder, AsyncTestCompleter],
               (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
                 const t = `<select>
                      <option *ngFor="let city of list" [value]="city['id']">
                        {{ city['name'] }}
                      </option>
                    </select>`;

                 tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                   var testComp = fixture.debugElement.componentInstance;
                   testComp.list = [{'id': '0', 'name': 'SF'}, {'id': '1', 'name': 'NYC'}];
                   fixture.detectChanges();

                   var sfOption = fixture.debugElement.query(By.css('option'));
                   expect(sfOption.nativeElement.value).toEqual('0');

                   testComp.list[0]['id'] = '2';
                   fixture.detectChanges();
                   expect(sfOption.nativeElement.value).toEqual('2');
                   async.done();
                 });
               }));

        it('with formControlName',
           inject(
               [TestComponentBuilder, AsyncTestCompleter],
               (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
                 const t = `<div [formGroup]="form">
                    <select formControlName="city">
                      <option value="SF"></option>
                      <option value="NYC"></option>
                    </select>
                  </div>`;

                 tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                   fixture.debugElement.componentInstance.form =
                       new FormGroup({'city': new FormControl('SF')});
                   fixture.detectChanges();

                   var select = fixture.debugElement.query(By.css('select'));
                   var sfOption = fixture.debugElement.query(By.css('option'));


                   expect(select.nativeElement.value).toEqual('SF');
                   expect(sfOption.nativeElement.selected).toBe(true);

                   select.nativeElement.value = 'NYC';
                   dispatchEvent(select.nativeElement, 'change');

                   expect(fixture.debugElement.componentInstance.form.value).toEqual({
                     'city': 'NYC'
                   });
                   expect(sfOption.nativeElement.selected).toBe(false);
                   async.done();
                 });
               }));

        it('with a dynamic list of options',
           fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
             const t = `<div [formGroup]="form">
                      <select formControlName="city">
                        <option *ngFor="let c of data" [value]="c"></option>
                      </select>
                  </div>`;

             var fixture: any /** TODO #9100 */;
             tcb.overrideTemplate(MyComp8, t)
                 .createAsync(MyComp8)
                 .then((compFixture) => fixture = compFixture);
             tick();

             fixture.debugElement.componentInstance.form =
                 new FormGroup({'city': new FormControl('NYC')});

             fixture.debugElement.componentInstance.data = ['SF', 'NYC'];
             fixture.detectChanges();
             tick();

             var select = fixture.debugElement.query(By.css('select'));
             expect(select.nativeElement.value).toEqual('NYC');
           })));
      });

      it('should support custom value accessors',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<div [formGroup]="form">
                  <input type="text" formControlName="name" wrapped-value>
                </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new FormGroup({'name': new FormControl('aa')});
                 fixture.detectChanges();
                 var input = fixture.debugElement.query(By.css('input'));
                 expect(input.nativeElement.value).toEqual('!aa!');

                 input.nativeElement.value = '!bb!';
                 dispatchEvent(input.nativeElement, 'input');

                 expect(fixture.debugElement.componentInstance.form.value).toEqual({'name': 'bb'});
                 async.done();
               });
             }));

      it('should support custom value accessors on non builtin input elements that fire a change event without a \'target\' property',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<div [formGroup]="form">
                  <my-input formControlName="name"></my-input>
                </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new FormGroup({'name': new FormControl('aa')});
                 fixture.detectChanges();
                 var input = fixture.debugElement.query(By.css('my-input'));
                 expect(input.componentInstance.value).toEqual('!aa!');

                 input.componentInstance.value = '!bb!';
                 ObservableWrapper.subscribe(input.componentInstance.onInput, (value) => {
                   expect(fixture.debugElement.componentInstance.form.value).toEqual({
                     'name': 'bb'
                   });
                   async.done();
                 });
                 input.componentInstance.dispatchChangeEvent();
               });
             }));

    });

    describe('validations', () => {
      it('should use sync validators defined in html',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               var form = new FormGroup({
                 'login': new FormControl(''),
                 'min': new FormControl(''),
                 'max': new FormControl('')
               });

               const t = `<div [formGroup]="form" login-is-empty-validator>
                    <input type="text" formControlName="login" required>
                    <input type="text" formControlName="min" minlength="3">
                    <input type="text" formControlName="max" maxlength="3">
                 </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form = form;
                 fixture.detectChanges();

                 var required = fixture.debugElement.query(By.css('[required]'));
                 var minLength = fixture.debugElement.query(By.css('[minlength]'));
                 var maxLength = fixture.debugElement.query(By.css('[maxlength]'));

                 required.nativeElement.value = '';
                 minLength.nativeElement.value = '1';
                 maxLength.nativeElement.value = '1234';
                 dispatchEvent(required.nativeElement, 'input');
                 dispatchEvent(minLength.nativeElement, 'input');
                 dispatchEvent(maxLength.nativeElement, 'input');

                 expect(form.hasError('required', ['login'])).toEqual(true);
                 expect(form.hasError('minlength', ['min'])).toEqual(true);
                 expect(form.hasError('maxlength', ['max'])).toEqual(true);

                 expect(form.hasError('loginIsEmpty')).toEqual(true);

                 required.nativeElement.value = '1';
                 minLength.nativeElement.value = '123';
                 maxLength.nativeElement.value = '123';
                 dispatchEvent(required.nativeElement, 'input');
                 dispatchEvent(minLength.nativeElement, 'input');
                 dispatchEvent(maxLength.nativeElement, 'input');

                 expect(form.valid).toEqual(true);

                 async.done();
               });
             }));

      it('should use async validators defined in the html',
         fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
           var form = new FormGroup({'login': new FormControl('')});

           const t = `<div [formGroup]="form">
                    <input type="text" formControlName="login" uniq-login-validator="expected">
                 </div>`;

           var rootTC: any /** TODO #9100 */;
           tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((root) => rootTC = root);
           tick();

           rootTC.debugElement.componentInstance.form = form;
           rootTC.detectChanges();

           expect(form.pending).toEqual(true);

           tick(100);

           expect(form.hasError('uniqLogin', ['login'])).toEqual(true);

           var input = rootTC.debugElement.query(By.css('input'));
           input.nativeElement.value = 'expected';
           dispatchEvent(input.nativeElement, 'input');
           tick(100);

           expect(form.valid).toEqual(true);
         })));

      it('should use sync validators defined in the model',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               var form = new FormGroup({'login': new FormControl('aa', Validators.required)});

               const t = `<div [formGroup]="form">
                  <input type="text" formControlName="login">
                 </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form = form;
                 fixture.detectChanges();
                 expect(form.valid).toEqual(true);

                 var input = fixture.debugElement.query(By.css('input'));

                 input.nativeElement.value = '';
                 dispatchEvent(input.nativeElement, 'input');

                 expect(form.valid).toEqual(false);
                 async.done();
               });
             }));

      it('should use async validators defined in the model',
         fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
           var control =
               new FormControl('', Validators.required, uniqLoginAsyncValidator('expected'));
           var form = new FormGroup({'login': control});

           const t = `<div [formGroup]="form">
                  <input type="text" formControlName="login">
                 </div>`;

           var fixture: any /** TODO #9100 */;
           tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((root) => fixture = root);
           tick();

           fixture.debugElement.componentInstance.form = form;
           fixture.detectChanges();

           expect(form.hasError('required', ['login'])).toEqual(true);

           var input = fixture.debugElement.query(By.css('input'));
           input.nativeElement.value = 'wrong value';
           dispatchEvent(input.nativeElement, 'input');

           expect(form.pending).toEqual(true);
           tick();

           expect(form.hasError('uniqLogin', ['login'])).toEqual(true);

           input.nativeElement.value = 'expected';
           dispatchEvent(input.nativeElement, 'input');
           tick();

           expect(form.valid).toEqual(true);
         })));
    });

    describe('nested forms', () => {
      it('should init DOM with the given form object',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               var form =
                   new FormGroup({'nested': new FormGroup({'login': new FormControl('value')})});

               const t = `<div [formGroup]="form">
                  <div formGroupName="nested">
                    <input type="text" formControlName="login">
                  </div>
              </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form = form;
                 fixture.detectChanges();

                 var input = fixture.debugElement.query(By.css('input'));
                 expect(input.nativeElement.value).toEqual('value');
                 async.done();
               });
             }));

      it('should update the control group values on DOM change',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               var form =
                   new FormGroup({'nested': new FormGroup({'login': new FormControl('value')})});

               const t = `<div [formGroup]="form">
                    <div formGroupName="nested">
                      <input type="text" formControlName="login">
                    </div>
                </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form = form;
                 fixture.detectChanges();
                 var input = fixture.debugElement.query(By.css('input'));

                 input.nativeElement.value = 'updatedValue';
                 dispatchEvent(input.nativeElement, 'input');

                 expect(form.value).toEqual({'nested': {'login': 'updatedValue'}});
                 async.done();
               });
             }));
    });

    it('should support ngModel for complex forms',
       fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
         var form = new FormGroup({'name': new FormControl('')});

         const t =
             `<div [formGroup]="form"><input type="text" formControlName="name" [(ngModel)]="name"></div>`;

         let fixture = tcb.overrideTemplate(MyComp8, t).createFakeAsync(MyComp8);
         tick();

         fixture.debugElement.componentInstance.name = 'oldValue';
         fixture.debugElement.componentInstance.form = form;
         fixture.detectChanges();

         var input = fixture.debugElement.query(By.css('input')).nativeElement;
         expect(input.value).toEqual('oldValue');

         input.value = 'updatedValue';
         dispatchEvent(input, 'input');

         tick();
         expect(fixture.debugElement.componentInstance.name).toEqual('updatedValue');
       })));

    it('should support ngModel for single fields',
       fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
         var form = new FormControl('');

         const t = `<div><input type="text" [formControl]="form" [(ngModel)]="name"></div>`;

         let fixture = tcb.overrideTemplate(MyComp8, t).createFakeAsync(MyComp8);
         tick();
         fixture.debugElement.componentInstance.form = form;
         fixture.debugElement.componentInstance.name = 'oldValue';
         fixture.detectChanges();

         var input = fixture.debugElement.query(By.css('input')).nativeElement;
         expect(input.value).toEqual('oldValue');

         input.value = 'updatedValue';
         dispatchEvent(input, 'input');
         tick();

         expect(fixture.debugElement.componentInstance.name).toEqual('updatedValue');
       })));

    describe('setting status classes', () => {
      it('should work with single fields',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               var form = new FormControl('', Validators.required);

               const t = `<div><input type="text" [formControl]="form"></div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form = form;
                 fixture.detectChanges();

                 var input = fixture.debugElement.query(By.css('input')).nativeElement;
                 expect(sortedClassList(input)).toEqual([
                   'ng-invalid', 'ng-pristine', 'ng-untouched'
                 ]);

                 dispatchEvent(input, 'blur');
                 fixture.detectChanges();

                 expect(sortedClassList(input)).toEqual([
                   'ng-invalid', 'ng-pristine', 'ng-touched'
                 ]);

                 input.value = 'updatedValue';
                 dispatchEvent(input, 'input');
                 fixture.detectChanges();

                 expect(sortedClassList(input)).toEqual(['ng-dirty', 'ng-touched', 'ng-valid']);
                 async.done();
               });
             }));

      it('should work with complex model-driven forms',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               var form = new FormGroup({'name': new FormControl('', Validators.required)});

               const t =
                   `<form [formGroup]="form"><input type="text" formControlName="name"></form>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form = form;
                 fixture.detectChanges();

                 var input = fixture.debugElement.query(By.css('input')).nativeElement;
                 expect(sortedClassList(input)).toEqual([
                   'ng-invalid', 'ng-pristine', 'ng-untouched'
                 ]);

                 dispatchEvent(input, 'blur');
                 fixture.detectChanges();

                 expect(sortedClassList(input)).toEqual([
                   'ng-invalid', 'ng-pristine', 'ng-touched'
                 ]);

                 input.value = 'updatedValue';
                 dispatchEvent(input, 'input');
                 fixture.detectChanges();

                 expect(sortedClassList(input)).toEqual(['ng-dirty', 'ng-touched', 'ng-valid']);
                 async.done();
               });
             }));
    });

    it('should not update the view when the value initially came from the view',
       fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
         var form = new FormControl('');

         const t = `<div><input type="text" [formControl]="form" [(ngModel)]="name"></div>`;
         let fixture = tcb.overrideTemplate(MyComp8, t).createFakeAsync(MyComp8);
         tick();
         fixture.debugElement.componentInstance.form = form;
         fixture.detectChanges();

         var input = fixture.debugElement.query(By.css('input')).nativeElement;
         input.value = 'aa';
         input.setSelectionRange(1, 2);
         dispatchEvent(input, 'input');

         tick();
         fixture.detectChanges();

         // selection start has not changed because we did not reset the value
         expect(input.selectionStart).toEqual(1);
       })));

    describe('errors', () => {

      it('should throw if a form isn\'t passed into formGroup',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<div [formGroup]="form">
                <input type="text" formControlName="login">
               </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 expect(() => fixture.detectChanges())
                     .toThrowError(new RegExp(`formGroup expects a FormGroup instance`));
                 async.done();
               });
             }));

      it('should throw if formControlName is used without a control container',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<input type="text" formControlName="login">`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 expect(() => fixture.detectChanges())
                     .toThrowError(new RegExp(
                         `formControlName must be used with a parent formGroup directive`));
                 async.done();
               });
             }));

      it('should throw if formGroupName is used without a control container',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<div formGroupName="person">
                <input type="text" formControlName="login">
               </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 expect(() => fixture.detectChanges())
                     .toThrowError(new RegExp(
                         `formGroupName must be used with a parent formGroup directive`));
                 async.done();
               });
             }));

      it('should throw if formArrayName is used without a control container',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<div formArrayName="cities">
                <input type="text" formControlName="login">
               </div>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 expect(() => fixture.detectChanges())
                     .toThrowError(new RegExp(
                         `formArrayName must be used with a parent formGroup directive`));
                 async.done();
               });
             }));

      it('should throw if formControlName is used with the wrong control container',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<form>
                <input type="text" formControlName="login">
               </form>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 expect(() => fixture.detectChanges())
                     .toThrowError(new RegExp(
                         `formControlName must be used with a parent formGroup directive.`));
                 async.done();
               });
             }));

      it('should throw if formGroupName is used with the wrong control container',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<form>
            <div formGroupName="person">
              <input type="text" formControlName="login">
            </div>
          </form>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 expect(() => fixture.detectChanges())
                     .toThrowError(new RegExp(
                         `formGroupName must be used with a parent formGroup directive.`));
                 async.done();
               });
             }));

      it('should throw if formArrayName is used with the wrong control container',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<form>
            <div formArrayName="person">
              <input type="text" formControlName="login">
            </div>
          </form>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 expect(() => fixture.detectChanges())
                     .toThrowError(new RegExp(
                         `formArrayName must be used with a parent formGroup directive.`));
                 async.done();
               });
             }));

      it('should throw if radio button name does not match formControlName attr',
         inject(
             [TestComponentBuilder, AsyncTestCompleter],
             (tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
               const t = `<form [formGroup]="form">
                  <input type="radio" formControlName="food" name="drink" value="chicken">
                </form>`;

               tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new FormGroup({'food': new FormControl('fish')});
                 expect(() => fixture.detectChanges())
                     .toThrowError(new RegExp('If you define both a name and a formControlName'));
                 async.done();
               });
             }));
    });
  });
}

@Directive({
  selector: '[wrapped-value]',
  host: {'(input)': 'handleOnInput($event.target.value)', '[value]': 'value'}
})
class WrappedValue implements ControlValueAccessor {
  value: any /** TODO #9100 */;
  onChange: Function;

  constructor(cd: NgControl) { cd.valueAccessor = this; }

  writeValue(value: any /** TODO #9100 */) { this.value = `!${value}!`; }

  registerOnChange(fn: any /** TODO #9100 */) { this.onChange = fn; }
  registerOnTouched(fn: any /** TODO #9100 */) {}

  handleOnInput(value: any /** TODO #9100 */) {
    this.onChange(value.substring(1, value.length - 1));
  }
}

@Component({selector: 'my-input', template: ''})
class MyInput implements ControlValueAccessor {
  @Output('input') onInput = new EventEmitter();
  value: string;

  constructor(cd: NgControl) { cd.valueAccessor = this; }

  writeValue(value: any /** TODO #9100 */) { this.value = `!${value}!`; }

  registerOnChange(fn: any /** TODO #9100 */) { ObservableWrapper.subscribe(this.onInput, fn); }

  registerOnTouched(fn: any /** TODO #9100 */) {}

  dispatchChangeEvent() {
    ObservableWrapper.callEmit(this.onInput, this.value.substring(1, this.value.length - 1));
  }
}

function uniqLoginAsyncValidator(expectedValue: string) {
  return (c: any /** TODO #9100 */) => {
    var completer = PromiseWrapper.completer();
    var res = (c.value == expectedValue) ? null : {'uniqLogin': true};
    completer.resolve(res);
    return completer.promise;
  };
}

function loginIsEmptyGroupValidator(c: FormGroup) {
  return c.controls['login'].value == '' ? {'loginIsEmpty': true} : null;
}

@Directive({
  selector: '[login-is-empty-validator]',
  providers: [
    /* @ts2dart_Provider */ {
      provide: NG_VALIDATORS,
      useValue: loginIsEmptyGroupValidator,
      multi: true
    }
  ]
})
class LoginIsEmptyValidator {
}

@Directive({
  selector: '[uniq-login-validator]',
  providers: [{
    provide: NG_ASYNC_VALIDATORS,
    useExisting: forwardRef(() => UniqLoginValidator),
    multi: true
  }]
})
class UniqLoginValidator implements Validator {
  @Input('uniq-login-validator') expected: any /** TODO #9100 */;

  validate(c: any /** TODO #9100 */) { return uniqLoginAsyncValidator(this.expected)(c); }
}

@Component({
  selector: 'my-comp',
  template: '',
  directives: [WrappedValue, MyInput, NgIf, NgFor, LoginIsEmptyValidator, UniqLoginValidator]
})
class MyComp8 {
  form: any;
  name: string;
  data: any;
  list: any[];
  selectedCity: any;
  customTrackBy(index: number, obj: any): number { return index; };
}

function sortedClassList(el: any /** TODO #9100 */) {
  var l = getDOM().classList(el);
  ListWrapper.sort(l);
  return l;
}