合并JWL,WZY,TRM代码

Change-Id: Ifb4fcad3c06733e1e005e7d8d9403e3561010fb4
diff --git a/Merge/front/src/App.test.js b/Merge/front/src/App.test.js
new file mode 100644
index 0000000..1f03afe
--- /dev/null
+++ b/Merge/front/src/App.test.js
@@ -0,0 +1,8 @@
+import { render, screen } from '@testing-library/react';
+import App from './App';
+
+test('renders learn react link', () => {
+  render(<App />);
+  const linkElement = screen.getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});