Improve Http Request

frontend/src/app/Helpers/auth.interceptor.ts

@@ -7,7 +7,7 @@ import {
 } from '@angular/common/http';
 import { TokenStorageService } from '../Services/token.service';
 import { Observable } from 'rxjs';
-const TOKEN_HEADER_KEY = 'Authorization'; // for Spring Boot back-end
+const TOKEN_HEADER_KEY = 'Authorization';
 @Injectable()
 export class AuthInterceptor implements HttpInterceptor {
   constructor(private token: TokenStorageService) {}

frontend/src/app/Helpers/helper.service.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { HelperService } from './helper.service';
+
+describe('HelperService', () => {
+  let service: HelperService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(HelperService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});

frontend/src/app/Helpers/helper.service.ts

@@ -0,0 +1,10 @@
+import { Injectable } from '@angular/core';
+import { Stock } from '../Models/stock.model';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class HelperService {
+
+  constructor() { }
+}