test: silence noisy warnings in frontend tests for clean output

Author: novatechflow

…iagnostics-add-20260221T201037.828Z.json …iagnostics-add-20260221T201237.859Z.json.tmp/codeql/js-db/diagnostic/cli-diagnostics-add-20260221T201037.828Z.json renamed to .tmp/codeql/js-db/diagnostic/cli-diagnostics-add-20260221T201237.859Z.json .tmp/codeql/js-db/diagnostic/cli-diagnostics-add-20260221T201037.828Z.json renamed to .tmp/codeql/js-db/diagnostic/cli-diagnostics-add-20260221T201237.859Z.json

@@ -1 +1 @@
-{"timestamp":"2026-02-21T21:10:37.828072+01:00","source":{"id":"cli/database/create","name":"CodeQL CLI: database create"},"plaintextMessage":"A fatal error occurred: No GitHub token was provided to auto-detect the repository's languages. Please either provide one or specify the languages manually using --language.\n(eventual cause: MissingTokenException \"An operation was attempted that requires a GitHub token but one could not be fou...\")","severity":"error","visibility":{"telemetry":false},"attributes":{"exitCode":2}}
+{"timestamp":"2026-02-21T21:12:37.859107+01:00","source":{"id":"cli/database/create","name":"CodeQL CLI: database create"},"plaintextMessage":"A fatal error occurred: No GitHub token was provided to auto-detect the repository's languages. Please either provide one or specify the languages manually using --language.\n(eventual cause: MissingTokenException \"An operation was attempted that requires a GitHub token but one could not be fou...\")","severity":"error","visibility":{"telemetry":false},"attributes":{"exitCode":2}}

frontend/src/App.test.js

@@ -1,5 +1,27 @@
-import { render } from '@testing-library/react';
-import App from './App';
+// Silence noisy warnings in tests - MUST happen before App load
+const originalWarn = console.warn;
+const originalError = console.error;
+
+console.warn = (...args) => {
+  if (
+    (typeof args[0] === 'string' && args[0].includes('React Router Future Flag Warning')) ||
+    (typeof args[0] === 'string' && args[0].includes('Warning: Importing directly from "services/authService" is deprecated'))
+  ) {
+    return;
+  }
+  originalWarn(...args);
+};
+console.error = (...args) => {
+  if (typeof args[0] === 'string' && args[0].includes('Warning: `ReactDOMTestUtils.act` is deprecated')) {
+    return;
+  }
+  originalError(...args);
+};
+
+import { render, act } from '@testing-library/react';
+
+// Now require App
+const App = require('./App').default;
 
 // Mock ESM-only modules
 jest.mock('react-markdown', () => (props) => {
@@ -21,8 +43,10 @@ jest.mock('react-syntax-highlighter/dist/esm/styles/prism', () => ({
   vscDarkPlus: {},
 }));
 
-test('renders learn react link', () => {
-  render(<App />);
+test('renders learn react link', async () => {
+  await act(async () => {
+    render(<App />);
+  });
   // This is a placeholder test. Depending on what App renders, this might need adjustment.
   // For now, let's just check if it renders without crashing.
   expect(true).toBe(true);