angular-docs-cn/packages/compiler/test/pipe_resolver_mock_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 {Injector, Pipe} from '@angular/core';
import {inject} from '@angular/core/testing';
import {JitReflector} from '@angular/platform-browser-dynamic/src/compiler_reflector';
import {MockPipeResolver} from '../testing';
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{
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describe('MockPipeResolver', () => {
let pipeResolver: MockPipeResolver;
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beforeEach(inject([Injector], (injector: Injector) => {
pipeResolver = new MockPipeResolver(new JitReflector());
}));
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describe('Pipe overriding', () => {
it('should fallback to the default PipeResolver when templates are not overridden', () => {
const pipe = pipeResolver.resolve(SomePipe);
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expect(pipe.name).toEqual('somePipe');
});
it('should allow overriding the @Pipe', () => {
pipeResolver.setPipe(SomePipe, new Pipe({name: 'someOtherName'}));
const pipe = pipeResolver.resolve(SomePipe);
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expect(pipe.name).toEqual('someOtherName');
});
});
});
}
@Pipe({name: 'somePipe'})
class SomePipe {
}