public void LoginWithInvalidUserId()
{
try
{
var connection = new XmppChatClient(new Jid("invalid", XMPP_HOST, "auction"), "pass");
connection.Login();
Assert.Fail("should have thrown xmppexection when loggin with invalid user id");
}
catch(XmppException e) {Assert.That(e.Message.Contains("Auth error"));}
}