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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 { HttpBackend, HttpEvent, HttpRequest } from '@angular/common/http';
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import { Observable } from 'rxjs/Observable';
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import { HttpTestingController, RequestMatch } from './api';
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import { TestRequest } from './request';
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/**
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* A testing backend for `HttpClient` which both acts as an `HttpBackend`
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* and as the `HttpTestingController`.
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*
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* `HttpClientTestingBackend` works by keeping a list of all open requests.
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* As requests come in, they're added to the list. Users can assert that specific
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* requests were made and then flush them. In the end, a verify() method asserts
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* that no unexpected requests were made.
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*
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* @experimental
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*/
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export declare class HttpClientTestingBackend implements HttpBackend, HttpTestingController {
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/**
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* List of pending requests which have not yet been expected.
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*/
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private open;
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/**
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* Handle an incoming request by queueing it in the list of open requests.
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*/
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handle(req: HttpRequest<any>): Observable<HttpEvent<any>>;
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/**
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* Helper function to search for requests in the list of open requests.
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*/
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private _match(match);
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/**
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* Search for requests in the list of open requests, and return all that match
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* without asserting anything about the number of matches.
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*/
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match(match: string | RequestMatch | ((req: HttpRequest<any>) => boolean)): TestRequest[];
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/**
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* Expect that a single outstanding request matches the given matcher, and return
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* it.
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*
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* Requests returned through this API will no longer be in the list of open requests,
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* and thus will not match twice.
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*/
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expectOne(match: string | RequestMatch | ((req: HttpRequest<any>) => boolean), description?: string): TestRequest;
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/**
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* Expect that no outstanding requests match the given matcher, and throw an error
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* if any do.
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*/
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expectNone(match: string | RequestMatch | ((req: HttpRequest<any>) => boolean), description?: string): void;
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/**
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* Validate that there are no outstanding requests.
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*/
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verify(opts?: {
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ignoreCancelled?: boolean;
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}): void;
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private descriptionFromMatcher(matcher);
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}
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