feat(admin): implement admin controls polling and restart prompt (#16627)

packages/cli/src/ui/components/AdminSettingsChangedDialog.test.tsx

@@ -0,0 +1,51 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { renderWithProviders } from '../../test-utils/render.js';
+import { describe, it, expect, vi, afterEach } from 'vitest';
+import { act } from 'react';
+import { AdminSettingsChangedDialog } from './AdminSettingsChangedDialog.js';
+
+const handleRestartMock = vi.fn();
+
+describe('AdminSettingsChangedDialog', () => {
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  it('renders correctly', () => {
+    const { lastFrame } = renderWithProviders(<AdminSettingsChangedDialog />);
+    expect(lastFrame()).toMatchSnapshot();
+  });
+
+  it('restarts on "r" key press', async () => {
+    const { stdin } = renderWithProviders(<AdminSettingsChangedDialog />, {
+      uiActions: {
+        handleRestart: handleRestartMock,
+      },
+    });
+
+    act(() => {
+      stdin.write('r');
+    });
+
+    expect(handleRestartMock).toHaveBeenCalled();
+  });
+
+  it.each(['r', 'R'])('restarts on "%s" key press', async (key) => {
+    const { stdin } = renderWithProviders(<AdminSettingsChangedDialog />, {
+      uiActions: {
+        handleRestart: handleRestartMock,
+      },
+    });
+
+    act(() => {
+      stdin.write(key);
+    });
+
+    expect(handleRestartMock).toHaveBeenCalled();
+  });
+});