public void Find_Not_Existence_User()
 {
     var utility = new LdapUtility(validPathByIP, validUserName, validPassword);
     var userInfo = utility.FindUser(inValidUserName);
     Assert.IsNull(userInfo);
 }
        private bool CheckIfUserExist(string ldapServer, string userName, string pwd)
        {
            try
            {
                _viewModel.AddToProgress(DateTime.Now,
                $@"FindUser",
                "BEGIN",
                true,
                $@">User:'******'"+Environment.NewLine+$">LDAP:'{ldapServer}'");
                var utility = new LdapUtility(ldapServer, userName, pwd);
                var userInfo = utility.FindUser(userName);
                _viewModel.AddToProgress(DateTime.Now,
                    $@"FindUser",
                    $"Found user: {userInfo != null}",
                    userInfo != null,
                    $@">User:'******'" + Environment.NewLine + $">LDAP:'{ldapServer}'");
                return userInfo != null;
            }
            catch (Exception ex)
            {
                _viewModel.AddToProgress(DateTime.Now,
                    $@"FindUser",
                    "ERR",
                    true,
                    $@">User:'******'" + Environment.NewLine + $">LDAP:'{ldapServer}'"+Environment.NewLine+$"{ex.Message}");
                return false;
            }

        }