public void TestSlowCancellation()
{
MessageLog log = new MessageLog();
NodeServiceCollection services = new NodeServiceCollection();
TestNodeServiceFactory service1 = new TestNodeServiceFactory(log, TimeSpan.FromMilliseconds(200), false);
TestNodeServiceFactory service2 = new TestNodeServiceFactory(log, TimeSpan.FromMilliseconds(200), false);
services.AddFactory(service1);
services.AddFactory(service2);
CancellationTokenSource cts = new CancellationTokenSource();
services.CreateServices(null, cts.Token);
services.Start();
cts.Cancel();
Stopwatch sw = Stopwatch.StartNew();
Assert.False(services.Join(TimeSpan.FromMilliseconds(150)));
Assert.That(sw.Elapsed, Is.GreaterThanOrEqualTo(TimeSpan.FromMilliseconds(130)));
Assert.That(sw.Elapsed, Is.LessThanOrEqualTo(TimeSpan.FromMilliseconds(170)));
Assert.That(log.GetLog(), Is.EqualTo(new string[]
{
"Service created.",
"Service created.",
"Service started.",
"Service started."
}));
Assert.True(services.Join(TimeSpan.FromMilliseconds(100)));
Assert.That(sw.Elapsed, Is.GreaterThanOrEqualTo(TimeSpan.FromMilliseconds(180)));
Assert.That(sw.Elapsed, Is.LessThanOrEqualTo(TimeSpan.FromMilliseconds(220)));
services.DisposeServices();
Assert.That(log.GetLog(), Is.EqualTo(new string[]
{
"Service created.",
"Service created.",
"Service started.",
"Service started.",
"Service stopped.",
"Service stopped.",
"Service disposed.",
"Service disposed."
}));
}
public void TestSlowListener()
{
MessageLog log = new MessageLog();
ActionPerformer performer = new ActionPerformer(log);
EventManager eventManager = new EventManager();
const string eventType = "ET";
eventManager.Start();
eventManager.Watch(eventType, performer.SlowAction);
log.Log("Event fired.");
eventManager.Notify(eventType);
Thread.Sleep(150);
const int eventsCount = 10000;
Stopwatch sw = Stopwatch.StartNew();
log.Log($"Starting to fire a series of {eventsCount} events.");
for (int i = 0; i < eventsCount; i++)
{
eventManager.Notify(eventType);
}
log.Log($"Finished to fire a series of {eventsCount} events.");
Assert.That(sw.ElapsedMilliseconds, Is.LessThan(100));
Thread.Sleep(1000);
eventManager.Stop();
Assert.That(log.GetLog(), Is.EqualTo(new string[]
{
"Event fired.",
"SlowAction started.",
$"Starting to fire a series of {eventsCount} events.",
$"Finished to fire a series of {eventsCount} events.",
"SlowAction completed.",
"SlowAction started.",
"SlowAction completed."
}));
}
public void TestNoBlock()
{
BlockingThreadPool threadPool = new BlockingThreadPool(2, 2);
MessageLog log = new MessageLog();
for (int i = 0; i < TestIterationsCount; i++)
{
log.Clear();
Assert.That(threadPool.Execute(() =>
{
log.Log("task 1: started"); // T = 0
Thread.Sleep(200);
log.Log("task 1: finished"); // T = 200
}, 100), Is.True);
Thread.Sleep(50); // T = 50
Assert.That(threadPool.Execute(() =>
{
log.Log("task 2: started"); // T = 50
Thread.Sleep(200);
log.Log("task 2: finished"); // T = 250
}, 100), Is.True);
Thread.Sleep(50);
log.Log("main: wait started"); // T = 100
Thread.Sleep(200);
log.Log("main: wait finished"); // T = 300
Assert.That(log.GetLog(), Is.EqualTo(new string[]
{
"task 1: started",
"task 2: started",
"main: wait started",
"task 1: finished",
"task 2: finished",
"main: wait finished"
}));
}
Assert.That(threadPool.Stop(1000), Is.True);
}
public void TestBrokenListener()
{
MessageLog log = new MessageLog();
ActionPerformer performer1 = new ActionPerformer(log);
ActionPerformer performer2 = new ActionPerformer(log);
EventManager eventManager = new EventManager();
const string eventType = "ET";
eventManager.Start();
eventManager.Watch(eventType, performer1.BrokenAction);
eventManager.Watch(eventType, performer2.BrokenAction);
log.Log("Event fired.");
eventManager.Notify(eventType);
Thread.Sleep(200);
Assert.That(log.GetLog(), Is.EqualTo(new string[]
{
"Event fired.",
"BrokenAction invoked.",
"BrokenAction invoked."
}));
log.Log("Event fired.");
eventManager.Notify(eventType);
Thread.Sleep(200);
Assert.That(log.GetLog(), Is.EqualTo(new string[]
{
"Event fired.",
"BrokenAction invoked.",
"BrokenAction invoked.",
"Event fired.",
"BrokenAction invoked.",
"BrokenAction invoked."
}));
}
public void TestBrokenDispose()
{
MessageLog log = new MessageLog();
NodeServiceCollection services = new NodeServiceCollection();
TestNodeServiceFactory service1 = new TestNodeServiceFactory(log, TimeSpan.Zero, true);
TestNodeServiceFactory service2 = new TestNodeServiceFactory(log, TimeSpan.Zero, true);
services.AddFactory(service1);
services.AddFactory(service2);
CancellationTokenSource cts = new CancellationTokenSource();
services.CreateServices(null, cts.Token);
services.Start();
//Sleep to avoid arbitrary order of start and stop events.
Thread.Sleep(50);
cts.Cancel();
Assert.True(services.Join(TimeSpan.FromMilliseconds(100)));
services.DisposeServices();
Assert.That(log.GetLog(), Is.EqualTo(new string[]
{
"Service created.",
"Service created.",
"Service started.",
"Service started.",
"Service stopped.",
"Service stopped.",
"Service disposal failed.",
"Service disposal failed."
}));
}
public TestNodeService(MessageLog log, CancellationToken cancellationToken, TimeSpan shutdownTimeout, bool disposeShouldFail)
{
this.log = log;
this.cancellationToken = cancellationToken;
this.shutdownTimeout = shutdownTimeout;
this.disposeShouldFail = disposeShouldFail;
log.Log("Service created.");
}
public TestNodeServiceFactory(MessageLog log, TimeSpan shutdownTimeout, bool disposeShouldFail)
{
this.log = log;
this.shutdownTimeout = shutdownTimeout;
this.disposeShouldFail = disposeShouldFail;
}
public ActionPerformer(MessageLog log)
{
this.log = log;
}
public void TestSmoke()
{
MessageLog log = new MessageLog();
ActionPerformer performer = new ActionPerformer(log);
EventManager eventManager = new EventManager();
const string eventType1 = "ET1";
const string eventType2 = "ET2";
eventManager.Watch(eventType1, performer.Action1);
eventManager.Watch(eventType2, performer.Action2);
eventManager.Start();
log.Log($"Fired {eventType1} event.");
eventManager.Notify(eventType1);
Thread.Sleep(200);
log.Log($"Fired {eventType2} event.");
eventManager.Notify(eventType2);
Thread.Sleep(200);
Assert.That(log.GetLog(), Is.EqualTo(new string[]
{
$"Fired {eventType1} event.",
$"Action1 invoked.",
$"Fired {eventType2} event.",
$"Action2 invoked."
}));
// testing that attempt to remove non-existent event listeners does not affect existing watchers
eventManager.Unwatch(eventType1, performer.Action2);
eventManager.Unwatch(eventType2, performer.Action1);
log.Clear();
log.Log("Attempted to remove non-existent event listeners.");
log.Log($"Fired {eventType1} event.");
eventManager.Notify(eventType1);
Thread.Sleep(200);
log.Log($"Fired {eventType2} event.");
eventManager.Notify(eventType2);
Thread.Sleep(200);
Assert.That(log.GetLog(), Is.EqualTo(new string[]
{
$"Attempted to remove non-existent event listeners.",
$"Fired {eventType1} event.",
$"Action1 invoked.",
$"Fired {eventType2} event.",
$"Action2 invoked."
}));
eventManager.Unwatch(eventType1, performer.Action1);
log.Clear();
log.Log($"Removed event-listener for {eventType1}.");
log.Log($"Fired {eventType1} event.");
eventManager.Notify(eventType1);
log.Log($"Fired {eventType2} event.");
eventManager.Notify(eventType2);
Thread.Sleep(200);
Assert.That(log.GetLog(), Is.EqualTo(new string[]
{
$"Removed event-listener for {eventType1}.",
$"Fired {eventType1} event.",
$"Fired {eventType2} event.",
$"Action2 invoked."
}));
}
public void TestStopBusy()
{
MessageLog log = new MessageLog();
for (int i = 0; i < TestIterationsCount; i++)
{
BlockingThreadPool threadPool = new BlockingThreadPool(3, 3);
log.Clear();
threadPool.Execute(() =>
{
log.Log("task 1: started"); // T = 0
try
{
// finally block is required to ignore Thread.Interrupt and Thread.Abort
}
finally
{
Thread.Sleep(200);
}
log.Log("task 1: finished"); // T = 200
}, 100);
Thread.Sleep(50); // T = 50
threadPool.Execute(() =>
{
log.Log("task 2: started"); // T = 50
try
{
// finally block is required to ignore Thread.Interrupt and Thread.Abort
}
finally
{
Thread.Sleep(250);
}
log.Log("task 2: finished"); // T = 300
}, 100);
Thread.Sleep(50); // T = 50
threadPool.Execute(() =>
{
log.Log("task 3: started"); // T = 100
log.Log($"task 4 queued: {threadPool.Execute(() => { }, 300)}"); // T = 150
log.Log("task 3: finished"); // T = 150
}, 100);
Thread.Sleep(50); // T = 150
Stopwatch sw = Stopwatch.StartNew();
Assert.That(threadPool.Stop(100), Is.False); // T = 250
Assert.That(sw.ElapsedMilliseconds, Is.GreaterThan(75).And.LessThan(125));
sw.Restart();
Assert.That(threadPool.Execute(() => { }, 100), Is.False);
Assert.That(sw.ElapsedMilliseconds, Is.LessThan(25));
sw.Restart();
Assert.That(threadPool.Stop(100), Is.True); // T = 300
Assert.That(sw.ElapsedMilliseconds, Is.GreaterThan(25).And.LessThan(75));
//check that Stop does not fail on a stopped pool
sw.Restart();
Assert.That(threadPool.Stop(100), Is.True); // T = 300
Assert.That(sw.ElapsedMilliseconds, Is.LessThan(25));
Assert.That(log.GetLog(), Is.EqualTo(new string[]
{
"task 1: started",
"task 2: started",
"task 3: started",
"task 4 queued: False",
"task 3: finished",
"task 1: finished",
"task 2: finished"
}));
}
}
