Showing synchronizer notification

Change-Id: Ibc0ef77471026b48fa2e0a577adde9e43dde2a10
diff --git a/src/app/core/header/header.spec.ts b/src/app/core/header/header.spec.ts
index 7c00602..0191a87 100644
--- a/src/app/core/header/header.spec.ts
+++ b/src/app/core/header/header.spec.ts
@@ -4,12 +4,19 @@
 import 'angular-mocks';
 import {xosHeader} from './header';
 import {StyleConfig} from '../../config/style.config';
+import {Subject} from 'rxjs';
 
 describe('header component', () => {
   beforeEach(() => {
     angular
       .module('xosHeader', ['app/core/header/header.html'])
-      .component('xosHeader', xosHeader);
+      .component('xosHeader', xosHeader)
+      .service('SynchronizerStore', function(){
+        const events = new Subject();
+        this.query = () => {
+          return events.asObservable();
+        };
+      });
     angular.mock.module('xosHeader');
   });