fix/ karma Unit test

src/app/app.component.spec.ts

@@ -1,6 +1,7 @@
 import { TestBed, async } from '@angular/core/testing';
-
+import { RouterTestingModule } from '@angular/router/testing';
 import { AppComponent } from './app.component';
+import { ElectronService } from 'app/providers/electron.service';
 
 describe('AppComponent', () => {
   beforeEach(async(() => {
@@ -8,6 +9,10 @@ describe('AppComponent', () => {
       declarations: [
         AppComponent
       ],
+      providers : [
+        ElectronService
+      ],
+      imports: [RouterTestingModule]
     }).compileComponents();
   }));