Passing test confirming null selector doesn't block messages and that nolocal means local either to the connection or session objects.

activemqTest.cs

[TestMethod]
public void separate_client_in_same_process_receives_message_using_null_selector_and_ignoring_local_messages()
{
    var topic = Guid.NewGuid().ToString();
    var host = "tcp://localhost:61616";
    var topicClient1 = new ActiveMqTopicClient(topic, host, ignoreLocal: true);
    var topicClient2 = new ActiveMqTopicClient(topic, host, ignoreLocal: true);

    var eventsRecieved = 0;
    var waitHandle = new ManualResetEvent(initialState: false);

    //ignoreLocalMessages :false orsakar rundgång mellan interna och externa bussen
    //vi är bara 
    topicClient2.MessageReceived += message =>
    {
        eventsRecieved++;
        waitHandle.Set();
    };

    topicClient1.Send(new ActiveMQObjectMessage(){ Body = new object()});
    waitHandle.WaitOne(TimeSpan.FromSeconds(2));
            
    Assert.AreEqual(1, eventsRecieved); 
}