Apache.NMS.ActiveMQ.Util.FifoMessageDispatchChannel.DequeueNoWait C# (CSharp) Method

        public MessageDispatch DequeueNoWait()
        {
            MessageDispatch result = null;

            lock(this.mutex)
            {
                if( Closed || !Running || Empty )
                {
                    return null;
                }

                result = channel.First.Value;
                this.channel.RemoveFirst();
            }

            return result;
        }

 public void TestEnqueueFront() 
 {
     FifoMessageDispatchChannel channel = new FifoMessageDispatchChannel();
     MessageDispatch dispatch1 = new MessageDispatch();
     MessageDispatch dispatch2 = new MessageDispatch();
 
     channel.Start();
 
     Assert.IsTrue( channel.Empty == true );
     Assert.IsTrue( channel.Count == 0 );
 
     channel.EnqueueFirst( dispatch1 );
 
     Assert.IsTrue( channel.Empty == false );
     Assert.IsTrue( channel.Count == 1 );
 
     channel.EnqueueFirst( dispatch2 );
 
     Assert.IsTrue( channel.Empty == false );
     Assert.IsTrue( channel.Count == 2 );
 
     Assert.IsTrue( channel.DequeueNoWait() == dispatch2 );
     Assert.IsTrue( channel.DequeueNoWait() == dispatch1 );
 }