Check folder trust before allowing add directory (#12652)

packages/cli/src/ui/utils/directoryUtils.test.ts

@@ -0,0 +1,63 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { vi, describe, it, expect } from 'vitest';
+import { expandHomeDir } from './directoryUtils.js';
+import type * as osActual from 'node:os';
+import * as path from 'node:path';
+
+vi.mock('@google/gemini-cli-core', async (importOriginal) => {
+  const original =
+    await importOriginal<typeof import('@google/gemini-cli-core')>();
+  return {
+    ...original,
+    loadServerHierarchicalMemory: vi.fn().mockResolvedValue({
+      memoryContent: 'mock memory',
+      fileCount: 10,
+      filePaths: ['/a/b/c.md'],
+    }),
+  };
+});
+
+const mockHomeDir =
+  process.platform === 'win32' ? 'C:\\Users\\testuser' : '/home/testuser';
+
+vi.mock('node:os', async (importOriginal) => {
+  const original = await importOriginal<typeof osActual>();
+  return {
+    ...original,
+    homedir: vi.fn(() => mockHomeDir),
+  };
+});
+
+describe('directoryUtils', () => {
+  describe('expandHomeDir', () => {
+    it('should expand ~ to the home directory', () => {
+      expect(expandHomeDir('~')).toBe(mockHomeDir);
+    });
+
+    it('should expand ~/path to the home directory path', () => {
+      const expected = path.join(mockHomeDir, 'Documents');
+      expect(expandHomeDir('~/Documents')).toBe(expected);
+    });
+
+    it('should expand %userprofile% on Windows', () => {
+      if (process.platform === 'win32') {
+        const expected = path.join(mockHomeDir, 'Desktop');
+        expect(expandHomeDir('%userprofile%\\Desktop')).toBe(expected);
+      }
+    });
+
+    it('should not change a path that does not need expansion', () => {
+      const regularPath = path.join('usr', 'local', 'bin');
+      expect(expandHomeDir(regularPath)).toBe(regularPath);
+    });
+
+    it('should return an empty string if input is empty', () => {
+      expect(expandHomeDir('')).toBe('');
+    });
+  });
+});