vitest implementation

src/app/app.component.spec.ts

@@ -1,13 +1,13 @@
-import {TestBed, waitForAsync} from '@angular/core/testing';
+import {TestBed} from '@angular/core/testing';
 import {RouterTestingModule} from '@angular/router/testing';
 import {AppComponent} from './app.component';
 
 describe('AppComponent', () => {
-  beforeEach(waitForAsync(() => {
-    void TestBed.configureTestingModule({
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
       imports: [RouterTestingModule, AppComponent],
     }).compileComponents();
-  }));
+  });
 
   it('should create the app', () => {
     const fixture = TestBed.createComponent(AppComponent);