public void messageBroker_POCO_broadcast_using_more_then_one_subscriber_should_call_on_different_thread()
{
TestRunner.Execute(ApartmentState.MTA, () =>
{
var h1 = new ManualResetEvent(false);
var h2 = new ManualResetEvent(false);
var currentThreadId = Thread.CurrentThread.ManagedThreadId;
var s1ThreadId = Thread.CurrentThread.ManagedThreadId;
var s2ThreadId = Thread.CurrentThread.ManagedThreadId;
var dispatcher = new NullDispatcher();
var broker = new MessageBroker(dispatcher);
broker.Subscribe <PocoTestMessage>(this, (s, msg) =>
{
s1ThreadId = Thread.CurrentThread.ManagedThreadId;
h1.Set();
});
broker.Subscribe <PocoTestMessage>(this, (s, msg) =>
{
s2ThreadId = Thread.CurrentThread.ManagedThreadId;
h2.Set();
});
broker.Broadcast(this, new PocoTestMessage());
ManualResetEvent.WaitAll(new[] { h1, h2 });
currentThreadId.Should().Not.Be.EqualTo(s1ThreadId);
currentThreadId.Should().Not.Be.EqualTo(s2ThreadId);
});
}
public void SentMessage_CanBeReceived()
{
broker.Broadcast(new TestMessage {
Text = "Hello World"
});
// simulate message going over http
broker.Receive(channel.LastMessageJson);
receiver.LastMessage.Text.ShouldBe("Hello World");
}
public void MessageBroker_broadcast_from_multiple_thread_should_not_fail()
{
Exception failure = null;
var wh = new ManualResetEvent( false );
var run = true;
var dispatcher = new NullDispatcher();
var broker = new MessageBroker( dispatcher );
// do some metrics to find a good number of subscription to let the pub do a long running
const int metricsCount = 100;
for( int i = 0; i < metricsCount; i++ )
{
broker.Subscribe<PocoTestMessage>( this, ( sender, msg ) => { } );
}
var sw = Stopwatch.StartNew();
broker.Broadcast(this, new PocoTestMessage());
sw.Stop();
const int longRunningTiming = 100;
var elapsedMilliseconds = sw.ElapsedMilliseconds == 0
? longRunningTiming
: sw.ElapsedMilliseconds;
var subCountForLongRunning = (longRunningTiming / elapsedMilliseconds) * metricsCount;
Trace.WriteLine(string.Format("Need {0} subscriptions to run for at least {1} ms. {2} took {3} ms.", subCountForLongRunning, longRunningTiming, metricsCount, sw.ElapsedMilliseconds));
for (int i = 0; i < subCountForLongRunning - metricsCount; i++)
{
broker.Subscribe<PocoTestMessage>(this, (sender, msg) => { });
}
// this will take approximately 100 ms to do 1 broadcast
var broadcastThread1 = new Thread( payload =>
{
while( run )
{
try
{
broker.Broadcast( this, new PocoTestMessage() );
}
catch( Exception e )
{
lock( this )
{
failure = e;
wh.Set();
}
break;
}
}
} );
broadcastThread1.IsBackground = true;
broadcastThread1.Start();
// this should istantly throw an error because the broadcasting is enumerating the subscriptions and should take 100 ms to enumerate them all
var subscriberThread1 = new Thread(payload =>
{
while (run)
{
try
{
broker.Subscribe<PocoTestMessage>(this, (sender, msg) =>
{
Thread.Sleep(10);
});
}
catch (Exception e)
{
lock (this)
{
failure = e;
wh.Set();
break;
}
}
}
});
subscriberThread1.IsBackground = true;
subscriberThread1.Start();
var timeout = 1;
var signaled = wh.WaitOne( TimeSpan.FromSeconds( timeout ) );
if( !signaled )
{
Trace.WriteLine( String.Format( "Run without any issue for {0} seconds.", timeout ) );
}
run = false;
subscriberThread1.Join();
Assert.IsNull( failure, failure != null ? failure.ToString() : "--" );
}
public void messageBroker_POCO_should_broadcast_non_POCO_message_with_correct_Sender()
{
Object expected = this;
Object actual = null;
var h = new ManualResetEvent( false );
var dispatcher = new NullDispatcher();
var broker = new MessageBroker( dispatcher );
broker.Subscribe<LegacyTestMessage>( this, msg =>
{
actual = msg.Sender;
h.Set();
} );
broker.Broadcast( this, new LegacyTestMessage() );
h.WaitOne();
Assert.AreEqual( expected, actual );
}
public void messageBroker_POCO_should_broadcast_non_POCO_message_and_subscribe_as_POCO()
{
var received = false;
var h = new ManualResetEvent( false );
var dispatcher = new NullDispatcher();
var broker = new MessageBroker( dispatcher );
broker.Subscribe<LegacyTestMessage>( this, ( s, msg ) =>
{
received = true;
h.Set();
} );
broker.Broadcast( this, new LegacyTestMessage() );
h.WaitOne();
Assert.IsTrue( received );
}
public void messageBroker_broadcast_should_report_expected_exception()
{
ManualResetEvent h = new ManualResetEvent( false );
var dispatcher = new NullDispatcher();
var broker = new MessageBroker( dispatcher );
broker.Subscribe<LegacyTestMessage>( this, msg =>
{
throw new ArgumentException();
} );
try
{
broker.Broadcast( new LegacyTestMessage( this ) );
h.WaitOne();
}
catch
{
h.Set();
throw;
}
}
public void messageBroker_POCO_broadcast_using_more_then_one_subscriber_should_call_on_different_thread()
{
TestRunner.Execute( ApartmentState.MTA, () =>
{
var h1 = new ManualResetEvent( false );
var h2 = new ManualResetEvent( false );
var currentThreadId = Thread.CurrentThread.ManagedThreadId;
var s1ThreadId = Thread.CurrentThread.ManagedThreadId;
var s2ThreadId = Thread.CurrentThread.ManagedThreadId;
var dispatcher = new NullDispatcher();
var broker = new MessageBroker( dispatcher );
broker.Subscribe<PocoTestMessage>( this, ( s, msg ) =>
{
s1ThreadId = Thread.CurrentThread.ManagedThreadId;
h1.Set();
} );
broker.Subscribe<PocoTestMessage>( this, ( s, msg ) =>
{
s2ThreadId = Thread.CurrentThread.ManagedThreadId;
h2.Set();
} );
broker.Broadcast( this, new PocoTestMessage() );
ManualResetEvent.WaitAll( new[] { h1, h2 } );
currentThreadId.Should().Not.Be.EqualTo( s1ThreadId );
currentThreadId.Should().Not.Be.EqualTo( s2ThreadId );
} );
}
public void MessageBroker_broadcast_from_multiple_thread_should_not_fail()
{
Exception failure = null;
var wh = new ManualResetEvent(false);
var run = true;
var dispatcher = new NullDispatcher();
var broker = new MessageBroker(dispatcher);
// do some metrics to find a good number of subscription to let the pub do a long running
const int metricsCount = 100;
for (int i = 0; i < metricsCount; i++)
{
broker.Subscribe <PocoTestMessage>(this, (sender, msg) => { });
}
var sw = Stopwatch.StartNew();
broker.Broadcast(this, new PocoTestMessage());
sw.Stop();
const int longRunningTiming = 100;
var elapsedMilliseconds = sw.ElapsedMilliseconds == 0
? longRunningTiming
: sw.ElapsedMilliseconds;
var subCountForLongRunning = (longRunningTiming / elapsedMilliseconds) * metricsCount;
Trace.WriteLine(string.Format("Need {0} subscriptions to run for at least {1} ms. {2} took {3} ms.", subCountForLongRunning, longRunningTiming, metricsCount, sw.ElapsedMilliseconds));
for (int i = 0; i < subCountForLongRunning - metricsCount; i++)
{
broker.Subscribe <PocoTestMessage>(this, (sender, msg) => { });
}
// this will take approximately 100 ms to do 1 broadcast
var broadcastThread1 = new Thread(payload =>
{
while (run)
{
try
{
broker.Broadcast(this, new PocoTestMessage());
}
catch (Exception e)
{
lock (this)
{
failure = e;
wh.Set();
}
break;
}
}
});
broadcastThread1.IsBackground = true;
broadcastThread1.Start();
// this should istantly throw an error because the broadcasting is enumerating the subscriptions and should take 100 ms to enumerate them all
var subscriberThread1 = new Thread(payload =>
{
while (run)
{
try
{
broker.Subscribe <PocoTestMessage>(this, (sender, msg) =>
{
Thread.Sleep(10);
});
}
catch (Exception e)
{
lock (this)
{
failure = e;
wh.Set();
break;
}
}
}
});
subscriberThread1.IsBackground = true;
subscriberThread1.Start();
var timeout = 1;
var signaled = wh.WaitOne(TimeSpan.FromSeconds(timeout));
if (!signaled)
{
Trace.WriteLine(string.Format("Run without any issue for {0} seconds.", timeout));
}
run = false;
subscriberThread1.Join();
Assert.IsNull(failure, failure != null ? failure.ToString() : "--");
}
