public void can_update_availability_if_node_has_handler()
{
var message = new FakeMessage();
var handler = Mock <IRoutedMessageHandler>();
var trigger = Mock <IMessageTrigger>();
handler.Expect(x => x.Initialize(node));
trigger.Expect(x => x.Message).Return(message);
handler.Expect(x => x.Handles(message)).Return(true);
handler.Expect(x => x.UpdateAvailability(trigger));
node.RegisterHandler(handler);
node.UpdateAvailability(trigger);
}