Added intentional failure to check slack functionality

dao/persondao.test.js

@@ -82,7 +82,7 @@ test("update person with id", done => {
         console.log(
             "Test callback: status =" + status + ", data = " + JSON.stringify(data)
         );
-        expect(data.affectedRows).toBe(1);
+        expect(data.affectedRows).toBe(0);
         done();
     }
     personDao.updateOne(