Create App.test.jsx

Author: rcook0

frontend/src/__tests__/App.test.jsx

@@ -0,0 +1,12 @@
+import { render, screen } from "@testing-library/react";
+import { BrowserRouter } from "react-router-dom";
+import App from "../App";
+
+test("renders navbar and home page", () => {
+  render(
+    <BrowserRouter>
+      <App />
+    </BrowserRouter>
+  );
+  expect(screen.getByText(/Welcome to the Fullstack App/i)).toBeInTheDocument();
+});