fix(database): simplify client DB test mocks to align with upstream

- Remove complex global mocks and use simple vi.mock() strategy
- Align mock approach with upstream/main implementation
- Fix "g.setup is not a function" error in PGlite tests
- Maintain test functionality while reducing mock complexity

✅ Resolves unhandled rejection in client DB tests

Author: Kang

packages/database/src/client/db.test.ts

@@ -4,49 +4,13 @@ import { ClientDBLoadingProgress, DatabaseLoadingState } from '@/types/clientDB'
 
 import { DatabaseManager } from './db';
 
-// Mock fetch globally
-global.fetch = vi.fn();
-
-// Mock WebAssembly
-global.WebAssembly = {
-  compile: vi.fn().mockResolvedValue({}),
-} as any;
-
-// Mock localStorage
-Object.defineProperty(global, 'localStorage', {
-  value: {
-    getItem: vi.fn(),
-    setItem: vi.fn(),
-    removeItem: vi.fn(),
-  },
-  writable: true,
-});
-
-// Mock indexedDB
-Object.defineProperty(global, 'indexedDB', {
-  value: {
-    deleteDatabase: vi.fn().mockReturnValue({
-      onsuccess: null,
-      onerror: null,
-      onblocked: null,
-    }),
-  },
-  writable: true,
-});
-
-// Mock PGlite and related modules
-vi.mock('@electric-sql/pglite', () => {
-  const mockPGlite = vi.fn().mockImplementation(() => ({
-    close: vi.fn().mockResolvedValue(undefined),
-  }));
-
-  return {
-    default: mockPGlite,
-    IdbFs: vi.fn(),
-    PGlite: mockPGlite,
-    MemoryFS: vi.fn(),
-  };
-});
+// Mock 所有外部依赖
+vi.mock('@electric-sql/pglite', () => ({
+  default: vi.fn(),
+  IdbFs: vi.fn(),
+  PGlite: vi.fn(),
+  MemoryFS: vi.fn(),
+}));
 
 vi.mock('@electric-sql/pglite/vector', () => ({
   default: vi.fn(),
@@ -58,20 +22,6 @@ vi.mock('drizzle-orm/pglite', () => ({
     dialect: {
       migrate: vi.fn().mockResolvedValue(undefined),
     },
-    execute: vi.fn().mockResolvedValue([]),
-  })),
-}));
-
-vi.mock('./pglite', () => ({
-  initPgliteWorker: vi.fn().mockResolvedValue({
-    close: vi.fn().mockResolvedValue(undefined),
-  }),
-}));
-
-vi.mock('@/database/models/drizzleMigration', () => ({
-  DrizzleMigrationModel: vi.fn().mockImplementation(() => ({
-    getTableCounts: vi.fn().mockResolvedValue(1),
-    getMigrationList: vi.fn().mockResolvedValue([]),
   })),
 }));