feat(challenge28): testing a simple checkbox

apps/testing-checkbox/src/app/app.component.spec.ts

@@ -0,0 +1,10 @@
+import { render } from '@testing-library/angular';
+import { AppComponent } from './app.component';
+
+describe('AppComponent', () => {
+  describe('When checking the checkbox', () => {
+    it('Then button is enabled', async () => {
+      await render(AppComponent);
+    });
+  });
+});