test(admin): permitted operations

Main.java

@@ -1,13 +1,33 @@
 import lib.FillTables;
+import manager.Admin;
 import manager.Moderator;
+import model.City;
 
 public class Main {
 
     public static void main(String[] args) {
 
+        Admin admin = new Admin();
+        admin.setSession_start();
+        System.out.println("Admin session start: " + admin.getSession_start());
+        admin.addCities(FillTables.fillCities());
+
+        System.out.println("\n\n" + admin.toString());
+        System.out.println("Retrieving the city at 3rd position: " + admin.getCity(2).toString());
+
+        admin.removeCity(0);
+        System.out.println("\n\nDeleting the 1st city, it shouldn't appear in the display below: \n\n" + admin.toString());
+
+        City retrievedCity = admin.getCity(4);
+        retrievedCity.setName("Marrakech");
+        admin.updateCity(4, retrievedCity);
+        System.out.println("\n\nWe changed the 4th city to Marrakech , below's confirmation: \n\n" + admin.toString());        
+
+        admin.setSession_end();
+        System.out.println("\n\nAdmin session end: " + admin.getSession_end());
         Moderator modFes = new Moderator();
         modFes.setSession_start();
-        System.out.println("Session start: " + modFes.getSession_start());
+        System.out.println("\n\nModerator Session start: " + modFes.getSession_start());
         modFes.addMembers(FillTables.fillMembers());
         modFes.addCards(FillTables.fillCards());