117 lines
4.1 KiB
TypeScript
117 lines
4.1 KiB
TypeScript
/**
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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 {Injectable as _Injectable, Pipe as _Pipe, PipeTransform, WrappedValue, ɵɵdefineInjectable, ɵɵdefinePipe, ɵɵgetInheritedFactory, ɵɵinject} from '@angular/core';
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import {expect} from '@angular/platform-browser/testing/src/matchers';
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import {ɵɵtext, ɵɵtextInterpolate1} from '../../src/render3/instructions/all';
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import {ɵɵpipe, ɵɵpipeBind1} from '../../src/render3/pipe';
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import {TemplateFixture} from './render_util';
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const Pipe: typeof _Pipe = function(...args: any[]): any {
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// In test we use @Pipe for documentation only so it's safe to mock out the implementation.
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return () => undefined;
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} as any;
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const Injectable: typeof _Injectable = function(...args: any[]): any {
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// In test we use @Injectable for documentation only so it's safe to mock out the implementation.
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return () => undefined;
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} as any;
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describe('pipe', () => {
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// TODO: hasn't been moved over into acceptance, because the `WrappedValue` tests need to
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// use an impure pipe which always throws "changed after checked errors" with `TestBed`
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// both in Ivy and ViewEngine.
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describe('WrappedValue', () => {
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@Pipe({name: 'wrappingPipe'})
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class WrappingPipe implements PipeTransform {
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transform(value: any) {
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return new WrappedValue('Bar');
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}
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static ɵfac = function WrappingPipe_Factory() {
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return new WrappingPipe();
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};
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static ɵpipe = ɵɵdefinePipe({name: 'wrappingPipe', type: WrappingPipe, pure: false});
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}
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function createTemplate() {
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ɵɵtext(0);
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ɵɵpipe(1, 'wrappingPipe');
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}
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function updateTemplate() {
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ɵɵtextInterpolate1('', ɵɵpipeBind1(1, 1, null), '');
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}
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it('should unwrap', () => {
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const fixture =
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new TemplateFixture(createTemplate, updateTemplate, 2, 3, undefined, [WrappingPipe]);
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expect(fixture.html).toEqual('Bar');
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});
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it('should force change detection', () => {
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const fixture =
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new TemplateFixture(createTemplate, updateTemplate, 2, 3, undefined, [WrappingPipe]);
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expect(fixture.html).toEqual('Bar');
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fixture.hostElement.childNodes[0]!.textContent = 'Foo';
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expect(fixture.html).toEqual('Foo');
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fixture.update();
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expect(fixture.html).toEqual('Bar');
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});
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});
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// This test isn't in `acceptance`, because we can't capture the same behavior that we want
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// when going through `TestBed`. Here we're testing the behavior of AOT-compiled code which
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// differs from the JIT code in `TestBed`, because it includes a `ɵɵgetInheritedFactory` call
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// when the pipe is using inheritance.
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it('should be able to use DI in a Pipe that extends an Injectable', () => {
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@Injectable({providedIn: 'root'})
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class SayHelloService {
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getHello() {
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return 'Hello there';
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}
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static ɵfac = () => new SayHelloService();
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static ɵprov = ɵɵdefineInjectable(
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{token: SayHelloService, factory: SayHelloService.ɵfac, providedIn: 'root'});
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}
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@Injectable()
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class ParentPipe {
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constructor(protected sayHelloService: SayHelloService) {}
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static ɵfac = (t?: any) => new(t || ParentPipe)(ɵɵinject(SayHelloService));
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static ɵprov = ɵɵdefineInjectable({token: ParentPipe, factory: ParentPipe.ɵfac});
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}
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@Pipe({name: 'sayHello', pure: true})
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class SayHelloPipe extends ParentPipe implements PipeTransform {
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transform() {
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return this.sayHelloService.getHello();
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}
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static ɵfac = (t?: any) => ɵɵgetInheritedFactory(t || SayHelloPipe)(SayHelloPipe);
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static ɵpipe = ɵɵdefinePipe({name: 'sayHello', type: SayHelloPipe, pure: true});
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}
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const fixture = new TemplateFixture(
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() => {
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ɵɵtext(0);
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ɵɵpipe(1, 'sayHello');
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},
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() => {
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ɵɵtextInterpolate1('', ɵɵpipeBind1(1, 1, null), '');
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},
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2, 3, undefined, [SayHelloPipe]);
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expect(fixture.html).toBe('Hello there');
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});
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});
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