Add unit tests for AppComponent

src/app/app.component.spec.ts

@@ -0,0 +1,30 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+import { App } from './app.ts'; // Assuming App is exported as App, not AppComponent
+
+describe('App', () => {
+  let fixture: ComponentFixture<App>;
+  let component: App;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [App], // Standalone components are imported directly
+    }).compileComponents();
+
+    fixture = TestBed.createComponent(App);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create the app', () => {
+    expect(component).toBeTruthy();
+  });
+
+  it('should have the title 'daggerverse-test-angular-project'', () => {
+    expect(component.title()).toEqual('daggerverse-test-angular-project');
+  });
+
+  it('should render title in an h1 tag', () => {
+    const compiled = fixture.nativeElement as HTMLElement;
+    expect(compiled.querySelector('h1')?.textContent).toContain('Hello, daggerverse-test-angular-project');
+  });
+});