more db unit tests - best o luck !

src/services/db/admin.db.test.ts

@@ -106,6 +106,16 @@ describe('Admin DB Service', () => {
         pendingCorrectionCount: 2,
       });
     });
+
+    it('should throw an error if one of the parallel queries fails', async () => {
+      // Mock one query to succeed and another to fail
+      mockPoolInstance.query
+        .mockResolvedValueOnce({ rows: [{ count: '10' }] })
+        .mockRejectedValueOnce(new Error('DB Read Error'));
+
+      // The Promise.all should reject, and the function should re-throw the error
+      await expect(getApplicationStats()).rejects.toThrow('DB Read Error');
+    });
   });
 
   describe('getDailyStatsForLast30Days', () => {