init commit,

99_references/supabase-ionic-react/src/App.test.tsx

@@ -0,0 +1,8 @@
+import React from 'react';
+import { render } from '@testing-library/react';
+import App from './App';
+
+test('renders without crashing', () => {
+  const { baseElement } = render(<App />);
+  expect(baseElement).toBeDefined();
+});