diff --git a/frontend/app/model/network/user.service.spec.ts b/frontend/app/model/network/user.service.spec.ts
new file mode 100644
index 00000000..d4b2b072
--- /dev/null
+++ b/frontend/app/model/network/user.service.spec.ts
@@ -0,0 +1,50 @@
+///<reference path="../../../browser.d.ts"/>
+
+import {it, inject, beforeEachProviders, beforeEach, afterEach} from "@angular/core/testing";
+import {BaseRequestOptions, Http, Response, ResponseOptions} from "@angular/http";
+import {MockBackend, MockConnection} from "@angular/http/testing";
+import {provide} from "@angular/core";
+import "rxjs/Rx";
+import {NetworkService} from "./network.service";
+import {Message} from "../../../../common/entities/Message";
+import {UserService} from "./user.service";
+import {LoginComponent} from "../../login/login.component";
+import {LoginCredential} from "../../../../common/entities/LoginCredential";
+
+
+describe('UserService', () => {
+
+
+    beforeEachProviders(() => [
+        MockBackend,
+        BaseRequestOptions,
+        provide(Http, {
+            useFactory: (backend, options) => {
+                return new Http(backend, options);
+            }, deps: [MockBackend, BaseRequestOptions]
+        }),
+        NetworkService,
+        UserService
+    ]);
+
+
+
+
+
+    it('should call postJson at login', inject([UserService,NetworkService], (userService,networkService) => {
+        spyOn(networkService,"postJson");
+        let credential = new LoginCredential("name","pass");
+        userService.login(credential);
+        expect(networkService.postJson.calls.argsFor(0)).toEqual(["/user/login",{"loginCredential": credential}]);
+    }));
+    
+    it('should call getJson at getSessionUser', inject([UserService,NetworkService], (userService,networkService) => {
+        spyOn(networkService,"getJson");
+        let credential = new LoginCredential("name","pass");
+        userService.login(credential); 
+    }));
+
+
+
+
+});
diff --git a/frontend/app/model/network/user.service.ts b/frontend/app/model/network/user.service.ts
index c838873d..12315e9d 100644
--- a/frontend/app/model/network/user.service.ts
+++ b/frontend/app/model/network/user.service.ts
@@ -8,21 +8,20 @@ import {User} from "../../../../common/entities/User";
 import {Message} from "../../../../common/entities/Message";
 
 @Injectable()
-export class UserService extends NetworkService{
+export class UserService{
 
  
 
-    constructor(_http:Http){ 
-        super(_http);
+    constructor(private _networkService:NetworkService){
     }
 
 
     public login(credential:LoginCredential): Promise<Message<User>>{
-        return this.postJson("/user/login",{"loginCredential": credential});
+        return this._networkService.postJson("/user/login",{"loginCredential": credential});
     }
 
     public getSessionUser(): Promise<Message<User>>{
-        return this.getJson("/user/login");
+        return this._networkService.getJson("/user/login");
     }
   
 }