fixed bug for test

src/main/java/com/id/ui/cs/deadliners/adminauth/model/AdminAuthorization.java

@@ -43,7 +43,7 @@ public class AdminAuthorization {
 
     private boolean checkExist(AppUser user, Set<AppUser> users){
         for (AppUser u : users){
-            if (u.getEmail().equals(user.getEmail())) return true;
+            if (u.equals(user)) return true;
         } return false;
     }