Fixing broken unit test

Author: Mopar

src/app/app.component.spec.ts

@@ -1,11 +1,15 @@
 import { TestBed } from "@angular/core/testing";
 
 import { AppComponent } from "./app.component";
+import { CUSTOM_ELEMENTS_SCHEMA } from "@angular/core";
 
 describe("AppComponent", () => {
 
     beforeEach(() => {
         TestBed.configureTestingModule({
+            schemas: [
+                CUSTOM_ELEMENTS_SCHEMA
+            ],
             declarations: [
                 AppComponent
             ]