angular-cn/modules/@angular/compiler/test/test_component_builder_spec.ts

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/**
* @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 {NgIf} from '@angular/common';
import {Component, Injectable, Input, NgModule, Pipe} from '@angular/core';
import {ComponentFixtureAutoDetect, ComponentFixtureNoNgZone, withModule} from '@angular/core/testing';
import {AsyncTestCompleter, TestComponentBuilder, beforeEach, beforeEachProviders, ddescribe, describe, iit, inject, it, xdescribe, xit} from '@angular/core/testing/testing_internal';
import {dispatchEvent} from '@angular/platform-browser/testing/browser_util';
import {expect} from '@angular/platform-browser/testing/matchers';
import {ViewMetadata} from '../core_private';
@Component(
{selector: 'child-comp', template: `<span>Original {{childBinding}}</span>`, directives: []})
@Injectable()
class ChildComp {
childBinding: string;
constructor() { this.childBinding = 'Child'; }
}
@Component({selector: 'child-comp', template: `<span>Mock</span>`})
@Injectable()
class MockChildComp {
}
@Component({
selector: 'parent-comp',
template: `Parent(<child-comp></child-comp>)`,
directives: [ChildComp]
})
@Injectable()
class ParentComp {
}
@Component({
selector: 'my-if-comp',
template: `MyIf(<span *ngIf="showMore">More</span>)`,
directives: [NgIf]
})
@Injectable()
class MyIfComp {
showMore: boolean = false;
}
@Component({selector: 'child-child-comp', template: `<span>ChildChild</span>`})
@Injectable()
class ChildChildComp {
}
@Component({
selector: 'child-comp',
template: `<span>Original {{childBinding}}(<child-child-comp></child-child-comp>)</span>`,
directives: [ChildChildComp]
})
@Injectable()
class ChildWithChildComp {
childBinding: string;
constructor() { this.childBinding = 'Child'; }
}
@Component({selector: 'child-child-comp', template: `<span>ChildChild Mock</span>`})
@Injectable()
class MockChildChildComp {
}
@Component({selector: 'autodetect-comp', template: `<span (click)='click()'>{{text}}</span>`})
class AutoDetectComp {
text: string = '1';
click() { this.text += '1'; }
}
@Component({selector: 'async-comp', template: `<span (click)='click()'>{{text}}</span>`})
class AsyncComp {
text: string = '1';
click() {
Promise.resolve(null).then((_) => { this.text += '1'; });
}
}
@Component({selector: 'async-child-comp', template: '<span>{{localText}}</span>'})
class AsyncChildComp {
localText: string = '';
@Input()
set text(value: string) {
Promise.resolve(null).then((_) => { this.localText = value; });
}
}
@Component({
selector: 'async-change-comp',
template: `<async-child-comp (click)='click()' [text]="text"></async-child-comp>`,
directives: [AsyncChildComp]
})
class AsyncChangeComp {
text: string = '1';
click() { this.text += '1'; }
}
@Component({selector: 'async-timeout-comp', template: `<span (click)='click()'>{{text}}</span>`})
class AsyncTimeoutComp {
text: string = '1';
click() {
setTimeout(() => { this.text += '1'; }, 10);
}
}
@Component(
{selector: 'nested-async-timeout-comp', template: `<span (click)='click()'>{{text}}</span>`})
class NestedAsyncTimeoutComp {
text: string = '1';
click() {
setTimeout(() => { setTimeout(() => { this.text += '1'; }, 10); }, 10);
}
}
class FancyService {
value: string = 'real value';
}
class MockFancyService extends FancyService {
value: string = 'mocked out value';
}
@Component({
selector: 'my-service-comp',
providers: [FancyService],
template: `injected value: {{fancyService.value}}`
})
class TestBindingsComp {
constructor(private fancyService: FancyService) {}
}
@Component({
selector: 'my-service-comp',
viewProviders: [FancyService],
template: `injected value: {{fancyService.value}}`
})
class TestViewBindingsComp {
constructor(private fancyService: FancyService) {}
}
@Component({selector: 'li1', template: `<span>One</span>`})
class ListDir1 {
}
@Component({selector: 'li1', template: `<span>Alternate One</span>`})
class ListDir1Alt {
}
@Component({selector: 'li2', template: `<span>Two</span>`})
class ListDir2 {
}
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const LIST_CHILDREN = [ListDir1, ListDir2];
@Component({
selector: 'directive-list-comp',
template: `(<li1></li1>)(<li2></li2>)`,
directives: [LIST_CHILDREN]
})
class DirectiveListComp {
}
export function main() {
describe('test component builder', function() {
it('should instantiate a component with valid DOM',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(ChildComp).then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('Original Child');
async.done();
});
}));
it('should allow changing members of the component',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(MyIfComp).then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('MyIf()');
componentFixture.componentInstance.showMore = true;
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('MyIf(More)');
async.done();
});
}));
it('should override a template',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.overrideTemplate(MockChildComp, '<span>Mock</span>')
.createAsync(MockChildComp)
.then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('Mock');
async.done();
});
}));
it('should override a view',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.overrideView(
ChildComp,
new ViewMetadata({template: '<span>Modified {{childBinding}}</span>'}))
.createAsync(ChildComp)
.then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('Modified Child');
async.done();
});
}));
it('should override component dependencies',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.overrideDirective(ParentComp, ChildComp, MockChildComp)
.createAsync(ParentComp)
.then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('Parent(Mock)');
async.done();
});
}));
it('should override items from a list',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.overrideDirective(DirectiveListComp, ListDir1, ListDir1Alt)
.createAsync(DirectiveListComp)
.then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('(Alternate One)(Two)');
async.done();
});
}));
it('should override child component\'s dependencies',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.overrideDirective(ParentComp, ChildComp, ChildWithChildComp)
.overrideDirective(ChildWithChildComp, ChildChildComp, MockChildChildComp)
.createAsync(ParentComp)
.then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.nativeElement)
.toHaveText('Parent(Original Child(ChildChild Mock))');
async.done();
});
}));
it('should override a provider',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.overrideProviders(
TestBindingsComp, [{provide: FancyService, useClass: MockFancyService}])
.createAsync(TestBindingsComp)
.then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.nativeElement)
.toHaveText('injected value: mocked out value');
async.done();
});
}));
it('should override a viewBinding',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.overrideViewProviders(
TestViewBindingsComp, [{provide: FancyService, useClass: MockFancyService}])
.createAsync(TestViewBindingsComp)
.then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.nativeElement)
.toHaveText('injected value: mocked out value');
async.done();
});
}));
it('should create components synchronously',
inject([TestComponentBuilder], (tcb: TestComponentBuilder) => {
let componentFixture =
tcb.overrideTemplate(MockChildComp, '<span>Mock</span>').createSync(MockChildComp);
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('Mock');
}));
describe('ComponentFixture', () => {
it('should auto detect changes if autoDetectChanges is called',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(AutoDetectComp).then((componentFixture) => {
expect(componentFixture.ngZone).not.toBeNull();
componentFixture.autoDetectChanges();
expect(componentFixture.nativeElement).toHaveText('1');
let element = componentFixture.debugElement.children[0];
dispatchEvent(element.nativeElement, 'click');
expect(componentFixture.isStable()).toBe(true);
expect(componentFixture.nativeElement).toHaveText('11');
async.done();
});
}));
it('should auto detect changes if ComponentFixtureAutoDetect is provided as true',
withModule({providers: [{provide: ComponentFixtureAutoDetect, useValue: true}]})
.inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(AutoDetectComp).then((componentFixture) => {
expect(componentFixture.nativeElement).toHaveText('1');
let element = componentFixture.debugElement.children[0];
dispatchEvent(element.nativeElement, 'click');
expect(componentFixture.nativeElement).toHaveText('11');
async.done();
});
}));
it('should signal through whenStable when the fixture is stable (autoDetectChanges)',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(AsyncComp).then((componentFixture) => {
componentFixture.autoDetectChanges();
expect(componentFixture.nativeElement).toHaveText('1');
let element = componentFixture.debugElement.children[0];
dispatchEvent(element.nativeElement, 'click');
expect(componentFixture.nativeElement).toHaveText('1');
// Component is updated asynchronously. Wait for the fixture to become stable
// before checking for new value.
expect(componentFixture.isStable()).toBe(false);
componentFixture.whenStable().then((waited) => {
expect(waited).toBe(true);
expect(componentFixture.nativeElement).toHaveText('11');
async.done();
});
});
}));
it('should signal through isStable when the fixture is stable (no autoDetectChanges)',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(AsyncComp).then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('1');
let element = componentFixture.debugElement.children[0];
dispatchEvent(element.nativeElement, 'click');
expect(componentFixture.nativeElement).toHaveText('1');
// Component is updated asynchronously. Wait for the fixture to become stable
// before checking.
componentFixture.whenStable().then((waited) => {
expect(waited).toBe(true);
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('11');
async.done();
});
});
}));
it('should wait for macroTask(setTimeout) while checking for whenStable ' +
'(autoDetectChanges)',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(AsyncTimeoutComp).then((componentFixture) => {
componentFixture.autoDetectChanges();
expect(componentFixture.nativeElement).toHaveText('1');
let element = componentFixture.debugElement.children[0];
dispatchEvent(element.nativeElement, 'click');
expect(componentFixture.nativeElement).toHaveText('1');
// Component is updated asynchronously. Wait for the fixture to become
// stable before checking for new value.
expect(componentFixture.isStable()).toBe(false);
componentFixture.whenStable().then((waited) => {
expect(waited).toBe(true);
expect(componentFixture.nativeElement).toHaveText('11');
async.done();
});
});
}));
it('should wait for macroTask(setTimeout) while checking for whenStable ' +
'(no autoDetectChanges)',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(AsyncTimeoutComp).then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('1');
let element = componentFixture.debugElement.children[0];
dispatchEvent(element.nativeElement, 'click');
expect(componentFixture.nativeElement).toHaveText('1');
// Component is updated asynchronously. Wait for the fixture to become
// stable before checking for new value.
expect(componentFixture.isStable()).toBe(false);
componentFixture.whenStable().then((waited) => {
expect(waited).toBe(true);
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('11');
async.done();
});
});
}));
it('should wait for nested macroTasks(setTimeout) while checking for whenStable ' +
'(autoDetectChanges)',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(NestedAsyncTimeoutComp).then((componentFixture) => {
componentFixture.autoDetectChanges();
expect(componentFixture.nativeElement).toHaveText('1');
let element = componentFixture.debugElement.children[0];
dispatchEvent(element.nativeElement, 'click');
expect(componentFixture.nativeElement).toHaveText('1');
// Component is updated asynchronously. Wait for the fixture to become
// stable before checking for new value.
expect(componentFixture.isStable()).toBe(false);
componentFixture.whenStable().then((waited) => {
expect(waited).toBe(true);
expect(componentFixture.nativeElement).toHaveText('11');
async.done();
});
});
}));
it('should wait for nested macroTasks(setTimeout) while checking for whenStable ' +
'(no autoDetectChanges)',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(NestedAsyncTimeoutComp).then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('1');
let element = componentFixture.debugElement.children[0];
dispatchEvent(element.nativeElement, 'click');
expect(componentFixture.nativeElement).toHaveText('1');
// Component is updated asynchronously. Wait for the fixture to become
// stable before checking for new value.
expect(componentFixture.isStable()).toBe(false);
componentFixture.whenStable().then((waited) => {
expect(waited).toBe(true);
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('11');
async.done();
});
});
}));
it('should stabilize after async task in change detection (autoDetectChanges)',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(AsyncChangeComp).then((componentFixture) => {
componentFixture.autoDetectChanges();
componentFixture.whenStable().then((_) => {
expect(componentFixture.nativeElement).toHaveText('1');
let element = componentFixture.debugElement.children[0];
dispatchEvent(element.nativeElement, 'click');
componentFixture.whenStable().then((_) => {
expect(componentFixture.nativeElement).toHaveText('11');
async.done();
});
});
});
}));
it('should stabilize after async task in change detection(no autoDetectChanges)',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(AsyncChangeComp).then((componentFixture) => {
componentFixture.detectChanges();
componentFixture.whenStable().then((_) => {
// Run detectChanges again so that stabilized value is reflected in the
// DOM.
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('1');
let element = componentFixture.debugElement.children[0];
dispatchEvent(element.nativeElement, 'click');
componentFixture.detectChanges();
componentFixture.whenStable().then((_) => {
// Run detectChanges again so that stabilized value is reflected in
// the DOM.
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('11');
async.done();
});
});
});
}));
describe('No NgZone', () => {
beforeEachProviders(() => [{provide: ComponentFixtureNoNgZone, useValue: true}]);
it('calling autoDetectChanges raises an error', () => {
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(ChildComp).then((componentFixture) => {
expect(() => { componentFixture.autoDetectChanges(); })
.toThrow(
'Cannot call autoDetectChanges when ComponentFixtureNoNgZone is set!!');
async.done();
});
});
});
it('should instantiate a component with valid DOM',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(ChildComp).then((componentFixture) => {
expect(componentFixture.ngZone).toBeNull();
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('Original Child');
async.done();
});
}));
it('should allow changing members of the component',
inject(
[TestComponentBuilder, AsyncTestCompleter],
(tcb: TestComponentBuilder, async: AsyncTestCompleter) => {
tcb.createAsync(MyIfComp).then((componentFixture) => {
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('MyIf()');
componentFixture.componentInstance.showMore = true;
componentFixture.detectChanges();
expect(componentFixture.nativeElement).toHaveText('MyIf(More)');
async.done();
});
}));
});
});
});
}