angular-cn/modules/@angular/common/test/forms-deprecated/integration_spec.ts

import {Component, Directive, Output, EventEmitter} from '@angular/core';
import {
  afterEach,
  beforeEach,
  ddescribe,
  describe,
  expect,
  it,
  inject,
  iit,
  xit
} from '@angular/core/testing/testing_internal';
import {fakeAsync, tick, flushMicrotasks} from '@angular/core/testing';
import {AsyncTestCompleter} from '@angular/core/testing/testing_internal';
import {TestComponentBuilder} from '@angular/compiler/testing';
import {ComponentFixture} from '@angular/compiler/testing';
import {getDOM} from '@angular/platform-browser/src/dom/dom_adapter';
import {
  Control,
  ControlGroup,
  ControlValueAccessor,
  FORM_DIRECTIVES,
  NG_VALIDATORS,
  NG_ASYNC_VALIDATORS,
  NgControl,
  NgIf,
  NgFor,
  NgForm,
  Validators,
  Validator,
  RadioButtonState
} from '@angular/common';
import {Provider, forwardRef, Input} from '@angular/core';
import {By} from '@angular/platform-browser/src/dom/debug/by';
import {ListWrapper} from '../../src/facade/collection';
import {ObservableWrapper, TimerWrapper} from '../../src/facade/async';
import {PromiseWrapper} from '../../src/facade/promise';
import {dispatchEvent} from '@angular/platform-browser/testing';

export function main() {
  describe("integration tests", () => {

    it("should initialize DOM elements with the given form object",
       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
         var t = `<div [ngFormModel]="form">
                <input type="text" ngControl="login">
               </div>`;

         tcb.overrideTemplate(MyComp8, t)
             .createAsync(MyComp8)
             .then((fixture) => {
               fixture.debugElement.componentInstance.form =
                   new ControlGroup({"login": new Control("loginValue")});
               fixture.detectChanges();

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

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

         tcb.overrideTemplate(MyComp8, t)
             .createAsync(MyComp8)
             .then((fixture) => {
               expect(() => fixture.detectChanges())
                   .toThrowError(new RegExp(`ngFormModel expects a form. Please pass one in.`));
               async.done();
             });
       }));

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

         var t = `<div [ngFormModel]="form">
                <input type="text" ngControl="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) => {
         var form = new ControlGroup({"login": new Control("oldValue")});

         var t = `<div [ngFormModel]="form">
                <input type="text" ngControl="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) => {
         var t = `<div>
                      <form [ngFormModel]="form" (ngSubmit)="name='updated'"></form>
                      <span>{{name}}</span>
                    </div>`;

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

         fixture.debugElement.componentInstance.form = new ControlGroup({});
         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 NgForm as submitted on submit event",
      inject([TestComponentBuilder], fakeAsync((tcb: TestComponentBuilder) => {
        var t = `<div>
                      <form #f="ngForm" (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.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 mark NgFormModel as submitted on submit event",
      inject([TestComponentBuilder], fakeAsync((tcb: TestComponentBuilder) => {
        var t = `<div>
                      <form #f="ngForm" [ngFormModel]="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 ControlGroup({});
        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) => {
         var control = new Control("loginValue");

         var t = `<div><input type="text" [ngFormControl]="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 control group",
       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
         var t = `<div [ngFormModel]="form">
                <input type="text" ngControl="login">
               </div>`;

         tcb.overrideTemplate(MyComp8, t)
             .createAsync(MyComp8)
             .then((fixture) => {
               fixture.debugElement.componentInstance.form =
                   new ControlGroup({"login": new Control("oldValue")});
               fixture.detectChanges();

               fixture.debugElement.componentInstance.form =
                   new ControlGroup({"login": new Control("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) => {
         var login = new Control("oldValue");
         var form = new ControlGroup({"login": login});

         var t = `<div [ngFormModel]="form">
                <input type="text" ngControl="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) => {
         var login = new Control("oldValue");
         var form = new ControlGroup({"login": login});

         var t = `<div [ngFormModel]="form">
                <input type="text" ngControl="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();
             });
       }));

    describe("different control types", () => {
      it("should support <input type=text>",
         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
           var t = `<div [ngFormModel]="form">
                  <input type="text" ngControl="text">
                </div>`;

           tcb.overrideTemplate(MyComp8, t)
               .createAsync(MyComp8)
               .then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new ControlGroup({"text": new Control("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) => {
           var t = `<div [ngFormModel]="form">
                  <input ngControl="text">
                </div>`;

           tcb.overrideTemplate(MyComp8, t)
               .createAsync(MyComp8)
               .then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new ControlGroup({"text": new Control("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) => {
           var t = `<div [ngFormModel]="form">
                  <textarea ngControl="text"></textarea>
                </div>`;

           tcb.overrideTemplate(MyComp8, t)
               .createAsync(MyComp8)
               .then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new ControlGroup({"text": new Control('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) => {
           var t = `<div [ngFormModel]="form">
                  <input type="checkbox" ngControl="checkbox">
                </div>`;

           tcb.overrideTemplate(MyComp8, t)
               .createAsync(MyComp8)
               .then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new ControlGroup({"checkbox": new Control(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) => {
           var t = `<div [ngFormModel]="form">
                  <input type="number" ngControl="num">
                </div>`;

           tcb.overrideTemplate(MyComp8, t)
               .createAsync(MyComp8)
               .then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new ControlGroup({"num": new Control(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) => {
           var t = `<div [ngFormModel]="form">
                  <input type="number" ngControl="num" required>
                </div>`;

           tcb.overrideTemplate(MyComp8, t)
               .createAsync(MyComp8)
               .then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new ControlGroup({"num": new Control(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) => {
           var form = new ControlGroup({"num": new Control(10)});
           var t = `<div [ngFormModel]="form">
                  <input type="number" ngControl="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) => {
           var t = `<form [ngFormModel]="form">
                  <input type="radio" ngControl="foodChicken" name="food">
                  <input type="radio" ngControl="foodFish" name="food">
                </form>`;

           tcb.overrideTemplate(MyComp8, t)
               .createAsync(MyComp8)
               .then((fixture) => {
                 fixture.debugElement.componentInstance.form = new ControlGroup({
                   "foodChicken": new Control(new RadioButtonState(false, 'chicken')),
                   "foodFish": new Control(new RadioButtonState(true, 'fish'))
                 });
                 fixture.detectChanges();

                 var input = fixture.debugElement.query(By.css("input"));
                 expect(input.nativeElement.checked).toEqual(false);

                 dispatchEvent(input.nativeElement, "change");
                 fixture.detectChanges();

                 let value = fixture.debugElement.componentInstance.form.value;
                 expect(value['foodChicken'].checked).toEqual(true);
                 expect(value['foodFish'].checked).toEqual(false);
                 async.done();
               });
         }));

      describe("should support <select>", () => {
        it("with basic selection",
           inject([TestComponentBuilder, AsyncTestCompleter],
                  (tcb: TestComponentBuilder, async) => {
                    var 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) => {
                    var 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 ngControl",
           inject([TestComponentBuilder, AsyncTestCompleter],
                  (tcb: TestComponentBuilder, async) => {
                    var t = `<div [ngFormModel]="form">
                    <select ngControl="city">
                      <option value="SF"></option>
                      <option value="NYC"></option>
                    </select>
                  </div>`;

                    tcb.overrideTemplate(MyComp8, t)
                        .createAsync(MyComp8)
                        .then((fixture) => {
                          fixture.debugElement.componentInstance.form =
                              new ControlGroup({"city": new Control("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) => {
             var t = `<div [ngFormModel]="form">
                      <select ngControl="city">
                        <option *ngFor="let c of data" [value]="c"></option>
                      </select>
                  </div>`;

             var fixture;
             tcb.overrideTemplate(MyComp8, t)
                 .createAsync(MyComp8)
                 .then((compFixture) => fixture = compFixture);
             tick();

             fixture.debugElement.componentInstance.form =
                 new ControlGroup({"city": new Control("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("with option values that are objects",
           inject([TestComponentBuilder, AsyncTestCompleter],
                  (tcb: TestComponentBuilder, async) => {
                    var t = `<div>
                      <select [(ngModel)]="selectedCity">
                        <option *ngFor="let c of list" [ngValue]="c">{{c['name']}}</option>
                      </select>
                  </div>`;

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

                          var testComp = fixture.debugElement.componentInstance;
                          testComp.list = [{"name": "SF"}, {"name": "NYC"}, {"name": "Buffalo"}];
                          testComp.selectedCity = testComp.list[1];
                          fixture.detectChanges();

                          var select = fixture.debugElement.query(By.css("select"));
                          var nycOption = fixture.debugElement.queryAll(By.css("option"))[1];

                          expect(select.nativeElement.value).toEqual("1: Object");
                          expect(nycOption.nativeElement.selected).toBe(true);

                          select.nativeElement.value = "2: Object";
                          dispatchEvent(select.nativeElement, "change");
                          fixture.detectChanges();
                          TimerWrapper.setTimeout(() => {
                            expect(testComp.selectedCity['name']).toEqual("Buffalo");
                            async.done();
                          }, 0);
                        });
                  }));

        it("when new options are added (selection through the model)",
           inject([TestComponentBuilder, AsyncTestCompleter],
                  (tcb: TestComponentBuilder, async) => {
                    var t = `<div>
                      <select [(ngModel)]="selectedCity">
                        <option *ngFor="let c of list" [ngValue]="c">{{c['name']}}</option>
                      </select>
                  </div>`;

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

                          var testComp: MyComp8 = fixture.debugElement.componentInstance;
                          testComp.list = [{"name": "SF"}, {"name": "NYC"}];
                          testComp.selectedCity = testComp.list[1];
                          fixture.detectChanges();

                          testComp.list.push({"name": "Buffalo"});
                          testComp.selectedCity = testComp.list[2];
                          fixture.detectChanges();

                          var select = fixture.debugElement.query(By.css("select"));
                          var buffalo = fixture.debugElement.queryAll(By.css("option"))[2];
                          expect(select.nativeElement.value).toEqual("2: Object");
                          expect(buffalo.nativeElement.selected).toBe(true);
                          async.done();
                        });
                  }));

        it("when new options are added (selection through the UI)",
            inject([TestComponentBuilder, AsyncTestCompleter],
                (tcb: TestComponentBuilder, async) => {
                  var t = `<div>
                      <select [(ngModel)]="selectedCity">
                        <option *ngFor="let c of list" [ngValue]="c">{{c['name']}}</option>
                      </select>
                  </div>`;

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

                        var testComp: MyComp8 = fixture.debugElement.componentInstance;
                        testComp.list = [{"name": "SF"}, {"name": "NYC"}];
                        testComp.selectedCity = testComp.list[0];
                        fixture.detectChanges();

                        var select = fixture.debugElement.query(By.css("select"));
                        var ny = fixture.debugElement.queryAll(By.css("option"))[1];

                        select.nativeElement.value = "1: Object";
                        dispatchEvent(select.nativeElement, "change");
                        testComp.list.push({"name": "Buffalo"});
                        fixture.detectChanges();

                        expect(select.nativeElement.value).toEqual("1: Object");
                        expect(ny.nativeElement.selected).toBe(true);
                        async.done();
                      });
                }));


        it("when options are removed",
           inject([TestComponentBuilder, AsyncTestCompleter],
                  (tcb: TestComponentBuilder, async) => {
                    var t = `<div>
                      <select [(ngModel)]="selectedCity">
                        <option *ngFor="let c of list" [ngValue]="c">{{c}}</option>
                      </select>
                  </div>`;
                    tcb.overrideTemplate(MyComp8, t)
                        .createAsync(MyComp8)
                        .then((fixture) => {

                          var testComp: MyComp8 = fixture.debugElement.componentInstance;
                          testComp.list = [{"name": "SF"}, {"name": "NYC"}];
                          testComp.selectedCity = testComp.list[1];
                          fixture.detectChanges();

                          var select = fixture.debugElement.query(By.css("select"));
                          expect(select.nativeElement.value).toEqual("1: Object");

                          testComp.list.pop();
                          fixture.detectChanges();

                          expect(select.nativeElement.value).not.toEqual("1: Object");
                          async.done();
                        });
                  }));

        it("when option values change identity while tracking by index",
           inject([TestComponentBuilder, AsyncTestCompleter],
                  (tcb: TestComponentBuilder, async) => {
                    var t = `<div>
                      <select [(ngModel)]="selectedCity">
                        <option *ngFor="let c of list; trackBy:customTrackBy" [ngValue]="c">{{c}}</option>
                      </select>
                  </div>`;

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

                          var testComp = fixture.debugElement.componentInstance;

                          testComp.list = [{"name": "SF"}, {"name": "NYC"}];
                          testComp.selectedCity = testComp.list[0];
                          fixture.detectChanges();

                          testComp.list[1] = "Buffalo";
                          testComp.selectedCity = testComp.list[1];
                          fixture.detectChanges();

                          var select = fixture.debugElement.query(By.css("select"));
                          var buffalo = fixture.debugElement.queryAll(By.css("option"))[1];

                          expect(select.nativeElement.value).toEqual("1: Buffalo");
                          expect(buffalo.nativeElement.selected).toBe(true);
                          async.done();
                        });
                  }));

        it("with duplicate option values",
           inject([TestComponentBuilder, AsyncTestCompleter],
                  (tcb: TestComponentBuilder, async) => {
                    var t = `<div>
                      <select [(ngModel)]="selectedCity">
                        <option *ngFor="let c of list" [ngValue]="c">{{c}}</option>
                      </select>
                  </div>`;

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

                          var testComp = fixture.debugElement.componentInstance;

                          testComp.list = [{"name": "NYC"}, {"name": "SF"}, {"name": "SF"}];
                          testComp.selectedCity = testComp.list[0];
                          fixture.detectChanges();

                          testComp.selectedCity = testComp.list[1];
                          fixture.detectChanges();

                          var select = fixture.debugElement.query(By.css("select"));
                          var firstSF = fixture.debugElement.queryAll(By.css("option"))[1];

                          expect(select.nativeElement.value).toEqual("1: Object");
                          expect(firstSF.nativeElement.selected).toBe(true);
                          async.done();
                        });
                  }));

        it("when option values have same content, but different identities",
           inject([TestComponentBuilder, AsyncTestCompleter],
                  (tcb: TestComponentBuilder, async) => {
                    var t = `<div>
                      <select [(ngModel)]="selectedCity">
                        <option *ngFor="let c of list" [ngValue]="c">{{c['name']}}</option>
                      </select>
                  </div>`;

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

                          var testComp = fixture.debugElement.componentInstance;
                          testComp.list = [{"name": "SF"}, {"name": "NYC"}, {"name": "NYC"}];
                          testComp.selectedCity = testComp.list[0];
                          fixture.detectChanges();

                          testComp.selectedCity = testComp.list[2];
                          fixture.detectChanges();

                          var select = fixture.debugElement.query(By.css("select"));
                          var secondNYC = fixture.debugElement.queryAll(By.css("option"))[2];

                          expect(select.nativeElement.value).toEqual("2: Object");
                          expect(secondNYC.nativeElement.selected).toBe(true);
                          async.done();
                        });
                  }));
      });

      it("should support custom value accessors",
         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
           var t = `<div [ngFormModel]="form">
                  <input type="text" ngControl="name" wrapped-value>
                </div>`;

           tcb.overrideTemplate(MyComp8, t)
               .createAsync(MyComp8)
               .then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new ControlGroup({"name": new Control("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) => {
           var t = `<div [ngFormModel]="form">
                  <my-input ngControl="name"></my-input>
                </div>`;

           tcb.overrideTemplate(MyComp8, t)
               .createAsync(MyComp8)
               .then((fixture) => {
                 fixture.debugElement.componentInstance.form =
                     new ControlGroup({"name": new Control("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) => {
           var form = new ControlGroup(
               {"login": new Control(""), "min": new Control(""), "max": new Control("")});

           var t = `<div [ngFormModel]="form" login-is-empty-validator>
                    <input type="text" ngControl="login" required>
                    <input type="text" ngControl="min" minlength="3">
                    <input type="text" ngControl="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 ControlGroup({"login": new Control("")});

           var t = `<div [ngFormModel]="form">
                    <input type="text" ngControl="login" uniq-login-validator="expected">
                 </div>`;

           var rootTC;
           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) => {
           var form = new ControlGroup({"login": new Control("aa", Validators.required)});

           var t = `<div [ngFormModel]="form">
                  <input type="text" ngControl="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 Control("", Validators.required, uniqLoginAsyncValidator("expected"));
           var form = new ControlGroup({"login": control});

           var t = `<div [ngFormModel]="form">
                  <input type="text" ngControl="login">
                 </div>`;

           var fixture;
           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) => {
           var form =
               new ControlGroup({"nested": new ControlGroup({"login": new Control("value")})});

           var t = `<div [ngFormModel]="form">
                  <div ngControlGroup="nested">
                    <input type="text" ngControl="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) => {
           var form =
               new ControlGroup({"nested": new ControlGroup({"login": new Control("value")})});

           var t = `<div [ngFormModel]="form">
                    <div ngControlGroup="nested">
                      <input type="text" ngControl="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 ControlGroup({"name": new Control("")});

         var t =
             `<div [ngFormModel]="form"><input type="text" ngControl="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 Control("");

         var t = `<div><input type="text" [ngFormControl]="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("template-driven forms", () => {
      it("should add new controls and control groups",
         fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
           var t = `<form>
                     <div ngControlGroup="user">
                      <input type="text" ngControl="login">
                     </div>
               </form>`;

           let fixture = tcb.overrideTemplate(MyComp8, t).createFakeAsync(MyComp8);
           tick();
           fixture.debugElement.componentInstance.name = null;
           fixture.detectChanges();

           var form = fixture.debugElement.children[0].inject(NgForm);
           expect(form.controls['user']).not.toBeDefined();

           tick();

           expect(form.controls['user']).toBeDefined();
           expect(form.controls['user'].controls['login']).toBeDefined();
         })));

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

           let fixture = tcb.overrideTemplate(MyComp8, t).createFakeAsync(MyComp8);
           tick();
           fixture.debugElement.componentInstance.name = 'old';
           var form = fixture.debugElement.query(By.css("form"));

           dispatchEvent(form.nativeElement, "submit");
           tick();

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

      it("should not create a template-driven form when ngNoForm is used",
         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
           var t = `<form ngNoForm>
               </form>`;

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

                 expect(fixture.debugElement.children[0].providerTokens.length).toEqual(0);
                 async.done();
               });
         }));

      it("should remove controls",
         fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
           var t = `<form>
                    <div *ngIf="name == 'show'">
                      <input type="text" ngControl="login">
                    </div>
                  </form>`;

           let fixture = tcb.overrideTemplate(MyComp8, t).createFakeAsync(MyComp8);
           tick();
           fixture.debugElement.componentInstance.name = 'show';
           fixture.detectChanges();
           tick();
           var form = fixture.debugElement.children[0].inject(NgForm);


           expect(form.controls['login']).toBeDefined();

           fixture.debugElement.componentInstance.name = 'hide';
           fixture.detectChanges();
           tick();

           expect(form.controls['login']).not.toBeDefined();
         })));

      it("should remove control groups",
         fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
           var t = `<form>
                     <div *ngIf="name=='show'" ngControlGroup="user">
                      <input type="text" ngControl="login">
                     </div>
               </form>`;


           let fixture = tcb.overrideTemplate(MyComp8, t).createFakeAsync(MyComp8);
           tick();
           fixture.debugElement.componentInstance.name = 'show';
           fixture.detectChanges();
           tick();
           var form = fixture.debugElement.children[0].inject(NgForm);

           expect(form.controls['user']).toBeDefined();

           fixture.debugElement.componentInstance.name = 'hide';
           fixture.detectChanges();
           tick();

           expect(form.controls['user']).not.toBeDefined();
         })));

      it("should support ngModel for complex forms",
         fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
           var t = `<form>
                      <input type="text" ngControl="name" [(ngModel)]="name">
               </form>`;

           let fixture = tcb.overrideTemplate(MyComp8, t).createFakeAsync(MyComp8);
           tick();
           fixture.debugElement.componentInstance.name = "oldValue";
           fixture.detectChanges();
           tick();

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

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


      it("should support <type=radio>",
         fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
           const t = `<form>
                  <input type="radio" name="food" ngControl="chicken" [(ngModel)]="data['chicken']">
                  <input type="radio" name="food" ngControl="fish" [(ngModel)]="data['fish']">
                  <input type="radio" name="food" ngControl="beef" [(ngModel)]="data['beef']">
                  <input type="radio" name="food" ngControl="pork" [(ngModel)]="data['pork']">
                </form>`;

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

           fixture.debugElement.componentInstance.data = {
             'chicken': new RadioButtonState(false, 'chicken'),
             'fish': new RadioButtonState(true, 'fish'),
             'beef': new RadioButtonState(false, 'beef'),
             'pork': new RadioButtonState(true, 'pork')
           };
           fixture.detectChanges();
           tick();

           const input = fixture.debugElement.query(By.css("input"));
           expect(input.nativeElement.checked).toEqual(false);

           dispatchEvent(input.nativeElement, "change");
           tick();

           const data = fixture.debugElement.componentInstance.data;

           expect(data['chicken']).toEqual(new RadioButtonState(true, 'chicken'));
           expect(data['fish']).toEqual(new RadioButtonState(false, 'fish'));
           expect(data['beef']).toEqual(new RadioButtonState(false, 'beef'));
           expect(data['pork']).toEqual(new RadioButtonState(false, 'pork'));
         })));
    });

    it("should support multiple named <type=radio> groups",
        fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
          const t = `<form>
                  <input type="radio" name="food" ngControl="chicken" [(ngModel)]="data['chicken']">
                  <input type="radio" name="food" ngControl="fish" [(ngModel)]="data['fish']">
                  <input type="radio" name="drink" ngControl="cola" [(ngModel)]="data['cola']">
                  <input type="radio" name="drink" ngControl="sprite" [(ngModel)]="data['sprite']">
                </form>`;

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

          fixture.debugElement.componentInstance.data = {
            'chicken': new RadioButtonState(false, 'chicken'),
            'fish': new RadioButtonState(true, 'fish'),
            'cola': new RadioButtonState(false, 'cola'),
            'sprite': new RadioButtonState(true, 'sprite')
          };
          fixture.detectChanges();
          tick();

          const input = fixture.debugElement.query(By.css("input"));
          expect(input.nativeElement.checked).toEqual(false);

          dispatchEvent(input.nativeElement, "change");
          tick();

          const data = fixture.debugElement.componentInstance.data;

          expect(data['chicken']).toEqual(new RadioButtonState(true, 'chicken'));
          expect(data['fish']).toEqual(new RadioButtonState(false, 'fish'));
          expect(data['cola']).toEqual(new RadioButtonState(false, 'cola'));
          expect(data['sprite']).toEqual(new RadioButtonState(true, 'sprite'));
        })));

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

           var t = `<div><input type="text" [ngFormControl]="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) => {
           var form = new ControlGroup({"name": new Control("", Validators.required)});

           var t = `<form [ngFormModel]="form"><input type="text" ngControl="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 work with ngModel",
         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
           var t = `<div><input [(ngModel)]="name" required></div>`;

           tcb.overrideTemplate(MyComp8, t)
               .createAsync(MyComp8)
               .then((fixture) => {
                 fixture.debugElement.componentInstance.name = "";
                 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();
               });
         }));
    });

    describe("ngModel corner cases", () => {
      it("should not update the view when the value initially came from the view",
         fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
           var form = new Control("");

           var t = `<div><input type="text" [ngFormControl]="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);
         })));

      it("should update the view when the model is set back to what used to be in the view",
         fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
           var t = `<input type="text" [(ngModel)]="name">`;
           let fixture = tcb.overrideTemplate(MyComp8, t).createFakeAsync(MyComp8);
           tick();
           fixture.debugElement.componentInstance.name = "";
           fixture.detectChanges();

           // Type "aa" into the input.
           var input = fixture.debugElement.query(By.css("input")).nativeElement;
           input.value = "aa";
           input.selectionStart = 1;
           dispatchEvent(input, "input");

           tick();
           fixture.detectChanges();
           expect(fixture.debugElement.componentInstance.name).toEqual("aa");

           // Programatically update the input value to be "bb".
           fixture.debugElement.componentInstance.name = "bb";
           tick();
           fixture.detectChanges();
           expect(input.value).toEqual("bb");

           // Programatically set it back to "aa".
           fixture.debugElement.componentInstance.name = "aa";
           tick();
           fixture.detectChanges();
           expect(input.value).toEqual("aa");
         })));
      it("should not crash when validity is checked from a binding",
         fakeAsync(inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
           // {{x.valid}} used to crash because valid() tried to read a property
           // from form.control before it was set. This test verifies this bug is
           // fixed.
           var t = `<form><div ngControlGroup="x" #x="ngForm">
                  <input type="text" ngControl="test"></div>{{x.valid}}</form>`;
           let fixture = tcb.overrideTemplate(MyComp8, t).createFakeAsync(MyComp8);
           tick();
           fixture.detectChanges();
         })));
    });
  });
}

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

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

  writeValue(value) { this.value = `!${value}!`; }

  registerOnChange(fn) { this.onChange = fn; }
  registerOnTouched(fn) {}

  handleOnInput(value) { this.onChange(value.substring(1, value.length - 1)); }
}

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

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

  writeValue(value) { this.value = `!${value}!`; }

  registerOnChange(fn) { ObservableWrapper.subscribe(this.onInput, fn); }

  registerOnTouched(fn) {}

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

function uniqLoginAsyncValidator(expectedValue: string) {
  return (c) => {
    var completer = PromiseWrapper.completer();
    var res = (c.value == expectedValue) ? null : {"uniqLogin": true};
    completer.resolve(res);
    return completer.promise;
  };
}

function loginIsEmptyGroupValidator(c: ControlGroup) {
  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;

  validate(c) { return uniqLoginAsyncValidator(this.expected)(c); }
}

@Component({
  selector: "my-comp",
  template: '',
  directives: [
    FORM_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) {
  var l = getDOM().classList(el);
  ListWrapper.sort(l);
  return l;
}