public void MultipleInitializationsRaceConditionTest()
{
var transportResolver = new TransportResolver(new Dictionary <string, TransportInfo>
{
{ "tr1", new TransportInfo("host", "guest", "guest", null, "InMemory") },
{ "tr2", new TransportInfo("host", "guest", "guest", null, "InMemory") }
});
var messagingEngine = new MessagingEngine(transportResolver, new ITransportFactory[] { new InMemoryTransportFactory() });
messagingEngine.SerializationManager.RegisterSerializer("txt", typeof(string), new FakeStringSerializer());
var fp1 = new FeedProvider1(messagingEngine);
var consoleLogger = new ConsoleLogger();
fp1.Logger = consoleLogger;
var fp2 = new FeedProvider2(messagingEngine);
fp2.Logger = consoleLogger;
var databus = new DataBus();
databus.RegisterFeedProvider("FP1", fp1);
databus.RegisterFeedProvider("FP2", fp2);
var disposable1 = databus.Channel <string>("FP1").Feed("context1").Subscribe(Console.WriteLine);
var disposable2 = databus.Channel <string>("FP2").Feed("context2").Subscribe(Console.WriteLine);
Thread.Sleep(10000);
disposable1.Dispose();
disposable2.Dispose();
}
public void StatusFlowRepeatsCurrentStatusOnSubscribeTest()
{
var feedProvider = MockRepository.GenerateMock <IFeedProvider <long, string> >();
feedProvider.Expect(provider => provider.CanProvideFor("context")).IgnoreArguments().Return(true);
var feedSource = new Subject <long>();
feedProvider.Expect(provider => provider.CreateFeed("context")).IgnoreArguments()
.Return(Observable.Defer(() => feedSource));
var db = new DataBus(200);
db.RegisterFeedProvider("feed", feedProvider);
var feed = db.Channel <long>("feed").Feed("context");
FeedStatus? latestStatusFlowValue = null;
ManualResetEvent statusHandlerCalled = new ManualResetEvent(false);
using (feed.Subscribe())
{
feedSource.OnNext(1);
using (feed.StatusFlow.Subscribe(status =>
{
latestStatusFlowValue = status;
statusHandlerCalled.Set();
Console.WriteLine(status);
}))
{
Assert.IsTrue(statusHandlerCalled.WaitOne(200), "Value was not pushed on subscrbe to StatusFlow");
Assert.AreEqual(FeedStatus.Available, latestStatusFlowValue, "Wrong value was pushed on subscrbe to StatusFlow");
}
}
}
public void ExceptionHandlingTest()
{
DataBus db = new DataBus();
db.RegisterFeedProvider <string, string>("channel", context => Observable.Interval(TimeSpan.FromMilliseconds(50)).Select(i => context + i));
ManualResetEvent ev = new ManualResetEvent(false);
DataBusUnhandledExceptionEventArgs eventArgs = null;
db.UnhandledException += (sender, args) =>
{
eventArgs = args;
ev.Set();
};
var ex = new Exception("message");
using (db.Channel <string>("channel").Feed("test").Subscribe(s => { throw ex; }))
{
Assert.IsTrue(ev.WaitOne(500), "Exception was not handled");
Assert.IsNotNull(eventArgs);
Assert.AreEqual("channel", eventArgs.ChannelName, "Channel name was not captured.");
Assert.AreEqual(ex, eventArgs.Exception, "Exception was not captured.");
}
}
public void FeedProvidersRegisteredTwiceFailureTest()
{
DataBus db = new DataBus();
MyFeedProvider feedProvider1 = new MyFeedProvider();
db.RegisterFeedProvider("MyChannel", feedProvider1);
db.RegisterFeedProvider("MyChannel", feedProvider1);
db.Channel <string>("MyChannel").Feed(1);
}
public void NeverRequestFeedForTheSameContextTwiceTest()
{
DataBus db = new DataBus();
MyFeedProvider feedProvider = new MyFeedProvider();
db.RegisterFeedProvider("MyChannel", feedProvider);
AutoResetEvent ev = new AutoResetEvent(false);
AutoResetEvent ev1 = new AutoResetEvent(false);
int[] c = { 0, 0 };
var subscribtion1 = db.Channel <string>("MyChannel").Feed(1).Subscribe(s =>
{
Console.WriteLine("subscribtion1\t" + s);
if (++c[0] == 5)
{
ev.Set();
}
});
var subscribtion2 = db.Channel <string>("MyChannel").Feed(1).Subscribe(s =>
{
Console.WriteLine("subscribtion2\t" + s);
if (++c[1] == 5)
{
ev1.Set();
}
});
using (subscribtion1)
{
using (subscribtion2)
{
Assert.IsTrue(ev.WaitOne(1000), "Subscribtion handler was not called");
Assert.IsTrue(ev1.WaitOne(1000), "Subscribtion handler was not called");
}
}
Assert.AreNotEqual(0, feedProvider.SubscribeCounters[1], "Subscriber was not subscribed to the feed ");
Assert.AreNotEqual(0, feedProvider.UnsubscribeCounters[1], "Subscriber was not unsubscribed from the feed ");
Assert.AreEqual(1, feedProvider.SubscribeCounters[1], "Subscriber was subscribed more then 1 time to the same feed ");
Assert.AreEqual(1, feedProvider.UnsubscribeCounters[1], "Subscriber was unsubscribed more then 1 time from the same feed ");
}
public void TwoFeedProvidersForSameContextFailureTest()
{
DataBus db = new DataBus();
MyFeedProvider feedProvider1 = new MyFeedProvider();
MyFeedProvider feedProvider2 = new MyFeedProvider();
db.RegisterFeedProvider("MyChannel", feedProvider1);
db.RegisterFeedProvider("MyChannel", feedProvider2);
db.Channel <string>("MyChannel").Feed(1);
}
public void DeferredSubscriptionStatusTest()
{
Subject <long> feedSource = new Subject <long>();
Action notefySubscribed = () => { };
var feedProvider = MockRepository.GenerateMock <IFeedProvider <long, string> >();
feedProvider.Expect(provider => provider.CanProvideFor("context")).IgnoreArguments().Return(true);
feedProvider.Expect(provider => provider.OnFeedLost("context")).IgnoreArguments().Return(new long[0]);
feedProvider.Expect(provider => provider.CreateFeed("context")).IgnoreArguments()
.Return(
DeferredObservable.CreateWithDisposable <long>((observer, action) =>
{
notefySubscribed = action;
return(feedSource.Subscribe(observer));
})
);
using (var db = new DataBus(200))
{
db.RegisterFeedProvider("feed", feedProvider);
var feed = db.Channel <long>("feed").Feed("context");
var retrievedStatuses = new List <FeedStatus>();
using (feed.StatusFlow.Subscribe(retrievedStatuses.Add))
{
using (feed.Subscribe())
{
Assert.AreEqual(FeedStatus.Subscribing, feed.Status, "Status is not Subscribing while subscriptions is started and not yet reported as finished");
feedSource.OnNext(1);
Assert.AreEqual(FeedStatus.Subscribing, feed.Status, "Status is not Subscribing while subscriptions is started and not yet reported as finished");
notefySubscribed();
Assert.AreEqual(FeedStatus.Available, feed.Status, "Status was not set to Available after subscription is reported as finished");
var f = feedSource;
feedSource = new Subject <long>();
f.OnError(new Exception("test"));
Assert.AreEqual(FeedStatus.NotAvailable, feed.Status, "Status was not set to NotAvailable after feed source produced an error");
Thread.Sleep(500);
}
}
Assert.That(retrievedStatuses.ToArray(), Is.EqualTo(new[]
{
FeedStatus.NotSubscribed,
FeedStatus.Subscribing,
FeedStatus.Available,
FeedStatus.NotAvailable,
FeedStatus.Subscribing,
FeedStatus.NotSubscribed
}), "Statuses was not reported correctly via StatusFlow");
}
}
public void CanSubscribeReturnsFalseFailureTest()
{
DataBus db = new DataBus();
MyFeedProvider feedProvider = new MyFeedProvider();
db.RegisterFeedProvider("MyChannel", feedProvider);
try
{
db.Channel <string>("MyChannel").Feed(2);
}
finally
{
Assert.IsTrue(feedProvider.CanProvideForWasCalled, "IFeedProvider.CanProvideFor was not called");
}
}
public void StatusTest()
{
Subject <long> feedSource = null;
var feedProvider = MockRepository.GenerateMock <IFeedProvider <long, string> >();
feedProvider.Expect(provider => provider.CanProvideFor("context")).IgnoreArguments().Return(true);
feedProvider.Expect(provider => provider.OnFeedLost("context")).IgnoreArguments().Return(new long[0]);
feedProvider.Expect(provider => provider.CreateFeed("context")).IgnoreArguments()
.Return(
Observable.Defer(() =>
{
feedSource = new Subject <long>();
return(feedSource);
}
)
);
using (var db = new DataBus(200))
{
db.RegisterFeedProvider("feed", feedProvider);
var feed = db.Channel <long>("feed").Feed("context");
var retrievedStatuses = new List <FeedStatus>();
using (feed.StatusFlow.Subscribe(retrievedStatuses.Add))
{
using (feed.Subscribe())
{
feedSource.OnError(new Exception());
Assert.AreEqual(FeedStatus.NotAvailable, feed.Status, "Status was not set to NotAvailable after feed source produced an error");
Thread.Sleep(300);
}
}
// Assert.AreEqual(retrievedStatuses.Count, "Statuses was not reported correctly via StatusFlow");
Assert.That(retrievedStatuses, Is.EqualTo(new[] { FeedStatus.NotSubscribed, FeedStatus.Subscribing, FeedStatus.Available, FeedStatus.NotAvailable, FeedStatus.Subscribing, FeedStatus.Available, FeedStatus.NotSubscribed }), "Statuses was not reported correctly via StatusFlow");
/*
* Assert.AreEqual(FeedStatus.NotSubscribed, retrievedStatuses[0], "Statuses was not reported correctly via StatusFlow");
* Assert.AreEqual(FeedStatus.Subscribing, retrievedStatuses[1], "Statuses was not reported correctly via StatusFlow");
* Assert.AreEqual(FeedStatus.Available, retrievedStatuses[2], "Statuses was not reported correctly via StatusFlow");
* Assert.AreEqual(FeedStatus.NotAvailable, retrievedStatuses[3], "Statuses was not reported correctly via StatusFlow");
* Assert.AreEqual(FeedStatus.Subscribing, retrievedStatuses[4], "Statuses was not reported correctly via StatusFlow");
* Assert.AreEqual(FeedStatus.Available, retrievedStatuses[5], "Statuses was not reported correctly via StatusFlow");
* Assert.AreEqual(FeedStatus.NotSubscribed, retrievedStatuses[6], "Statuses was not reported correctly via StatusFlow");
*/
}
}
public void SubscribtionTest()
{
DataBus db = new DataBus();
db.RegisterFeedProvider <string, string>("strings", context => Observable.Interval(TimeSpan.FromMilliseconds(50)).Take(5).Select(i => context + i));
ManualResetEvent ev = new ManualResetEvent(false);
Stopwatch sw = Stopwatch.StartNew();
using (db.Channel <string>("strings").Feed("test").Subscribe(s =>
{
Console.WriteLine(sw.Elapsed.Milliseconds + " " + s);
ev.Set();
}
))
{
Assert.IsTrue(ev.WaitOne(400), "Handler was not called");
}
}
public void Subscribtion_LatestValueTest()
{
Subject <string> subject = new Subject <string>();
using (DataBus db = new DataBus())
{
db.RegisterFeedProvider <string, string>("channel", context => subject);
var feed = db.Channel <string>("channel").Feed("aaa");
using (feed.Subscribe(Console.WriteLine))
{
Assert.IsFalse(feed.HasLatestValue, "Feed has last value before first data recieve from feedprovider generated observable");
subject.OnNext("First value");
Assert.IsTrue(feed.HasLatestValue, "Feed DOES NOT have last value before first data recieve from feedprovider generated observable");
Assert.AreEqual("First value", feed.LatestValue, "Last value does not match most recent value produced by feedprovider generated observable");
subject.OnNext("Second value");
Assert.AreEqual("Second value", feed.LatestValue, "Last value does not match most recent value produced by feedprovider generated observable");
}
}
}
public void RetrySubscribeTest()
{
var feedProvider = MockRepository.GenerateMock <IFeedProvider <long, string> >();
feedProvider.Expect(provider => provider.CanProvideFor("context")).IgnoreArguments().Return(true);
feedProvider.Expect(provider => provider.OnFeedLost("context")).IgnoreArguments().Return(new long[0]);
int[] createFeedCallsCount = new[] { 0 };
int[] handlerCallsCount = new[] { 0 };
Subject <long> feed = null;
Func <string, IObservable <long> > createFeed = c =>
{
createFeedCallsCount[0]++;
feed = new Subject <long>();
return(feed);
};
feedProvider.Expect(provider => provider.CreateFeed("context")).Do(createFeed);
var db = new DataBus(300);
db.RegisterFeedProvider("feed", feedProvider);
using (db.Channel <long>("feed").Feed("context").Subscribe(l => handlerCallsCount[0]++))
{
feed.OnNext(1);
feed.OnError(new Exception());
Thread.Sleep(500);
feed.OnNext(2);
Thread.Sleep(100);
}
Assert.Greater(createFeedCallsCount[0], 0, "Feed was not created");
Assert.AreEqual(2, createFeedCallsCount[0], "Feed was not recreated after error");
Assert.AreEqual(2, handlerCallsCount[0], "Handler was not called for values produced after recreation of feed");
}
public void DisposeTest()
{
bool handlerWasCalled = false;
var handler = new Action <long>(l =>
{
handlerWasCalled = true;
});
var feedProvider = MockRepository.GenerateMock <IFeedProvider <long, string> >();
feedProvider.Expect(provider => provider.CanProvideFor("context")).IgnoreArguments().Return(true);
var db = new DataBus();
var subject = new Subject <long>();
feedProvider.Expect(provider => provider.CreateFeed("context")).IgnoreArguments().Return(subject);
db.RegisterFeedProvider("channel1", feedProvider);
db.Channel <long>("channel1").Feed("dummy").Subscribe(handler);
db.Dispose();
subject.OnNext(1);
Assert.That(handlerWasCalled, Is.False, "Handler was called after databus was disposed");
}