我正在使用HTTP.post调用为登录方法编写Uni-test,如：
this.http.post( endpoint,creds,{ headers: headers})
.map(res => res.json())
.subscribe(
data => this.onLoginComplete(data.access_token,credentials),err => this.onHttpLoginFailed(err),() => this.trace.debug(this.componentName,"Login completed.")
);@H_502_2@
问题是我无法模拟错误分支;每次都被称为onLoginComplete方法;
这是我的测试：
it("check that Atfer Login,console show an error ",inject(
[TraceService,Http,MockBackend,WsiEndpointService],(traceService: TraceService,http: Http,backend: MockBackend,wsiEndpoint: WsiEndpointService) => {
let tokenTest: number = 404 ;
let response: ResponSEOptions = null {} // i think i have to modify this
let connection: any;
backend.connections.subscribe((c: any) => connection = c);
let authService: AuthService = new AuthService(http,Service1,Service2);
authenticationservice.login({ "username": "a","password": "1" });
connection.mockRespond(new Response(response));
expect(ERROR);
}));@H_502_2@
再次感谢大家.
首先,您需要通过MockBackend覆盖XHRBackend类：
describe('HttpService Tests',() => {
beforeEachProviders(() => {
return [
HTTP_PROVIDERS,provide(XHRBackend,{ useClass: MockBackend }),HttpService
];
});
(...)
});@H_502_2@
请注意,HttpService是使用Http对象的服务,我想测试.
然后你需要注入mockBackend并订阅其connections属性.发送请求时,将调用相应的回调,您可以指定响应元素,如正文.该服务将接收此响应作为呼叫的响应.因此,您将能够基于此测试您的服务方法.
下面我将介绍如何测试HttpService的getItems方法：
it('Should return a list of items',inject([XHRBackend,HttpService,Injector],(mockBackend,httpService,injector) => {
mockBackend.connections.subscribe(
(connection: MockConnection) => {
connection.mockRespond(new Response(
new ResponSEOptions({
body: [ { id: '1',label: 'item1' }]
})));
});
httpService.getItems().subscribe(
items => {
expect(items).toEqual([ { id: '1',label: 'item1' }]);
});
});
});@H_502_2@
@Injectable()
export class HttpService {
constructor(private http:Http) {
}
getItems(): Observable<any[]> {
return this.http.get('/items').map(res => res.json());
}
}@H_502_2@
要模拟错误,只需使用mockError方法而不是mockResponSEOne：
mockBackend.connections.subscribe(
(connection: MockConnection) => {
connection.mockError(new Error('some error'));
});@H_502_2@
