106 lines
4.0 KiB
TypeScript
106 lines
4.0 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.JsonpCallbackContext
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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 {HttpHandler} from '@angular/common/http/src/backend';
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import {HttpClient} from '@angular/common/http/src/client';
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import {HTTP_INTERCEPTORS, HttpInterceptor} from '@angular/common/http/src/interceptor';
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import {HttpRequest} from '@angular/common/http/src/request';
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import {HttpEvent, HttpResponse} from '@angular/common/http/src/response';
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import {HttpTestingController} from '@angular/common/http/testing/src/api';
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import {HttpClientTestingModule} from '@angular/common/http/testing/src/module';
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import {TestRequest} from '@angular/common/http/testing/src/request';
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import {Injectable, Injector} from '@angular/core';
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import {TestBed} from '@angular/core/testing';
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import {Observable} from 'rxjs';
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import {map} from 'rxjs/operators';
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class TestInterceptor implements HttpInterceptor {
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constructor(private value: string) {}
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intercept(req: HttpRequest<any>, delegate: HttpHandler): Observable<HttpEvent<any>> {
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const existing = req.headers.get('Intercepted');
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const next = !!existing ? existing + ',' + this.value : this.value;
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req = req.clone({setHeaders: {'Intercepted': next}});
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return delegate.handle(req).pipe(map(event => {
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if (event instanceof HttpResponse) {
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const existing = event.headers.get('Intercepted');
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const next = !!existing ? existing + ',' + this.value : this.value;
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return event.clone({headers: event.headers.set('Intercepted', next)});
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}
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return event;
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}));
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}
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}
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class InterceptorA extends TestInterceptor {
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constructor() { super('A'); }
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}
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class InterceptorB extends TestInterceptor {
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constructor() { super('B'); }
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}
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@Injectable()
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class ReentrantInterceptor implements HttpInterceptor {
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constructor(private client: HttpClient) {}
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intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
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return next.handle(req);
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}
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}
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{
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describe('HttpClientModule', () => {
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let injector: Injector;
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beforeEach(() => {
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injector = TestBed.configureTestingModule({
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imports: [HttpClientTestingModule],
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providers: [
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{provide: HTTP_INTERCEPTORS, useClass: InterceptorA, multi: true},
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{provide: HTTP_INTERCEPTORS, useClass: InterceptorB, multi: true},
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],
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});
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});
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it('initializes HttpClient properly', done => {
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injector.get(HttpClient).get('/test', {responseType: 'text'}).subscribe(value => {
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expect(value).toBe('ok!');
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done();
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});
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injector.get(HttpTestingController).expectOne('/test').flush('ok!');
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});
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it('intercepts outbound responses in the order in which interceptors were bound', done => {
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injector.get(HttpClient)
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.get('/test', {observe: 'response', responseType: 'text'})
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.subscribe(value => done());
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const req = injector.get(HttpTestingController).expectOne('/test') as TestRequest;
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expect(req.request.headers.get('Intercepted')).toEqual('A,B');
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req.flush('ok!');
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});
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it('intercepts inbound responses in the right (reverse binding) order', done => {
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injector.get(HttpClient)
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.get('/test', {observe: 'response', responseType: 'text'})
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.subscribe(value => {
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expect(value.headers.get('Intercepted')).toEqual('B,A');
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done();
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});
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injector.get(HttpTestingController).expectOne('/test').flush('ok!');
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});
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it('allows interceptors to inject HttpClient', done => {
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TestBed.resetTestingModule();
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injector = TestBed.configureTestingModule({
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imports: [HttpClientTestingModule],
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providers: [
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{provide: HTTP_INTERCEPTORS, useClass: ReentrantInterceptor, multi: true},
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],
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});
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injector.get(HttpClient).get('/test').subscribe(() => { done(); });
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injector.get(HttpTestingController).expectOne('/test').flush('ok!');
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});
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});
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}
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