Added test and query call

endpoints/addusertogroup.js

@@ -2,10 +2,15 @@
 //
 //Requiremenst for inserting data in DB
 const adduser= require('../helpfunctions/adduser');
+const addgroup= require('../helpfunctions/addgroup');
 
 const handleAddUserToGroup = (req, res, db) => {
     //Parsing req body 
     const { reqgroup, requser} =req.body;
+    //Initializing an empty group if group does not exists. 
+    //Initialization needed for group clearing to mantain a group when all users are cleared 
+    addgroup.handleAddGroup(reqgroup, db);
+
     //Checking if user-group combination existis in DB table groups
     //if yes returns error if no inserts in DB table
     db.transaction (trx => {