43 lines
1.3 KiB
TypeScript
43 lines
1.3 KiB
TypeScript
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/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {CommonModule} from '@angular/common';
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import {ChangeDetectorRef, Component, Pipe, PipeTransform} from '@angular/core';
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import {ViewRef} from '@angular/core/src/render3/view_ref';
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import {TestBed} from '@angular/core/testing';
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describe('di', () => {
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describe('ChangeDetectorRef', () => {
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it('should inject host component ChangeDetectorRef into directives on templates', () => {
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let pipeInstance: MyPipe;
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@Pipe({name: 'pipe'})
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class MyPipe implements PipeTransform {
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constructor(public cdr: ChangeDetectorRef) { pipeInstance = this; }
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transform(value: any): any { return value; }
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}
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@Component({
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selector: 'my-app',
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template: `<div *ngIf="showing | pipe">Visible</div>`,
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})
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class MyApp {
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showing = true;
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constructor(public cdr: ChangeDetectorRef) {}
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}
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TestBed.configureTestingModule({declarations: [MyApp, MyPipe], imports: [CommonModule]});
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const fixture = TestBed.createComponent(MyApp);
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fixture.detectChanges();
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expect((pipeInstance !.cdr as ViewRef<MyApp>).context).toBe(fixture.componentInstance);
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});
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});
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});
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