test: fix group sync test by mocking console.error

tests/unit/services/group-sync.test.ts

@@ -4,6 +4,7 @@ import { db } from '../../../src/db';
 
 // Store original globals
 const originalFetch = globalThis.fetch;
+const originalConsoleError = console.error;
 
 describe('GroupSyncService', () => {
   let fetchMock: any;
@@ -46,8 +47,21 @@ describe('GroupSyncService', () => {
     });
 
     it('should throw if WHATSAPP_COMMUNITY_ID is missing', async () => {
+      const consoleErrorMock = mock(() => {});
+      console.error = consoleErrorMock;
+      
       process.env.WHATSAPP_COMMUNITY_ID = '';
-      await expect(GroupSyncService.syncGroups()).rejects.toThrow('WHATSAPP_COMMUNITY_ID is not set');
+      
+      await expect(GroupSyncService.syncGroups())
+        .rejects.toThrow('WHATSAPP_COMMUNITY_ID is not set');
+      
+      expect(consoleErrorMock).toHaveBeenCalledWith(
+        'Group sync failed:',
+        expect.any(Error)
+      );
+      
+      // Restore original console.error
+      console.error = originalConsoleError;
     });
 
     it('should filter groups by community ID', async () => {