public void ScheduleRepeatedly_in_milliseconds_Tests_and_verify_the_interval(int initialDelay, int interval)
{
// Prepare, set up actions to be fired
IActionScheduler scheduler = new HashedWheelTimerScheduler(Sys.Settings.Config, Log);
try
{
var cancelable = new Cancelable(Sys.Scheduler);
var receiver = ActorOf(dsl =>
{
//Receive three messages, and store the time when these were received
//after three messages stop the actor and send the times to TestActor
var messages = new List<DateTimeOffset>();
dsl.Receive<string>((s, context) =>
{
messages.Add(context.System.Scheduler.Now);
if (messages.Count == 3)
{
TestActor.Tell(messages);
cancelable.Cancel();
context.Stop(context.Self);
}
});
});
scheduler.ScheduleRepeatedly(initialDelay, interval, () => receiver.Tell(""), cancelable);
//Expect to get a list from receiver after it has received three messages
var dateTimeOffsets = ExpectMsg<List<DateTimeOffset>>();
dateTimeOffsets.ShouldHaveCount(3);
Action<int, int> validate = (a, b) =>
{
var valA = dateTimeOffsets[a];
var valB = dateTimeOffsets[b];
var diffBetweenMessages = Math.Abs((valB - valA).TotalMilliseconds);
var diffInMs = Math.Abs(diffBetweenMessages - interval);
var deviate = (diffInMs/interval);
deviate.Should(val => val < 0.1,
string.Format(
"Expected the interval between message {1} and {2} to deviate maximum 10% from {0}. It was {3} ms between the messages. It deviated {4}%",
interval, a + 1, b + 1, diffBetweenMessages, deviate*100));
};
validate(0, 1);
validate(1, 2);
}
finally
{
scheduler.AsInstanceOf<IDisposable>().Dispose();
}
}
public void Now_Should_be_accurate()
{
using (var sys = ActorSystem.Create("Foo"))
{
ITimeProvider timeProvider = new HashedWheelTimerScheduler(sys.Settings.Config, sys.Log);
try
{
Math.Abs((timeProvider.Now - DateTimeOffset.Now).TotalMilliseconds).ShouldBeLessThan(20);
}
finally
{
timeProvider.AsInstanceOf<IDisposable>().Dispose();
}
}
}
public void When_ScheduleOnce_using_canceled_Cancelable_Then_their_actions_should_not_be_invoked()
{
// Prepare, set up actions to be fired
IActionScheduler scheduler = new HashedWheelTimerScheduler(Sys.Settings.Config, Log);
try
{
var canceled = Cancelable.CreateCanceled();
scheduler.ScheduleOnce(0, () => TestActor.Tell("Test"), canceled);
//Validate that no messages were sent
ExpectNoMsg(100);
}
finally
{
scheduler.AsInstanceOf<IDisposable>().Dispose();
}
}
public void When_ScheduleTellOnce_and_then_canceling_before_they_occur_Then_their_actions_should_not_be_invoked()
{
// Prepare, set up actions to be fired
IScheduler scheduler = new HashedWheelTimerScheduler(Sys.Settings.Config, Log);
try
{
var cancelable = new Cancelable(scheduler);
scheduler.ScheduleTellOnce(100, TestActor, "Test", ActorRefs.NoSender, cancelable);
cancelable.Cancel();
//Validate that no messages were sent
ExpectNoMsg(150);
}
finally
{
scheduler.AsInstanceOf<IDisposable>().Dispose();
}
}
public void ScheduleRepeatedly_in_milliseconds_Tests(int initialDelay, int interval)
{
// Prepare, set up actions to be fired
IActionScheduler testScheduler = new HashedWheelTimerScheduler(Sys.Settings.Config, Log);
try
{
testScheduler.ScheduleRepeatedly(initialDelay, interval, () => TestActor.Tell("Test"));
//Just check that we receives more than one message
ExpectMsg("Test");
ExpectMsg("Test");
ExpectMsg("Test");
}
finally
{
testScheduler.AsInstanceOf<IDisposable>().Dispose();
}
}
public void ScheduleTellRepeatedly_TimeSpan_Tests(int initialDelay, int interval)
{
//Prepare, set up actions to be fired
IScheduler scheduler = new HashedWheelTimerScheduler(Sys.Settings.Config, Log);
try
{
scheduler.ScheduleTellRepeatedly(TimeSpan.FromMilliseconds(initialDelay),
TimeSpan.FromMilliseconds(interval), TestActor, "Test", ActorRefs.NoSender);
//Just check that we receives more than one message
ExpectMsg("Test");
ExpectMsg("Test");
ExpectMsg("Test");
}
finally
{
scheduler.AsInstanceOf<IDisposable>().Dispose();
}
}
public void When_canceling_existing_running_repeaters_by_scheduling_the_cancellation_ahead_of_time_Then_their_future_actions_should_not_be_invoked()
{
// Prepare, set up actions to be fired
IScheduler scheduler = new HashedWheelTimerScheduler(Sys.Settings.Config, Log);
try
{
var cancelableOdd = new Cancelable(scheduler);
scheduler.ScheduleTellRepeatedly(1, 150, TestActor, "Test", ActorRefs.NoSender, cancelableOdd);
cancelableOdd.CancelAfter(50);
//Expect one message
ExpectMsg("Test");
//Validate that no messages were sent
ExpectNoMsg(200);
}
finally
{
scheduler.AsInstanceOf<IDisposable>().Dispose();
}
}
public void When_ScheduleRepeatedly_action_crashes_Then_no_more_calls_will_be_scheduled()
{
IActionScheduler testScheduler = new HashedWheelTimerScheduler(Sys.Settings.Config, Log);
try
{
var timesCalled = 0;
testScheduler.ScheduleRepeatedly(0, 10, () =>
{
Interlocked.Increment(ref timesCalled);
throw new Exception("Crash");
});
AwaitCondition(() => timesCalled >= 1);
Thread.Sleep(200); //Allow any scheduled actions to be fired.
//We expect only one of the scheduled actions to actually fire
timesCalled.ShouldBe(1);
}
finally
{
testScheduler.AsInstanceOf<IDisposable>().Dispose();
}
}
public void When_ScheduleRepeatedly_with_0_delay_Then_action_is_executed_immediately()
{
IActionScheduler testScheduler = new HashedWheelTimerScheduler(Sys.Settings.Config, Log);
try
{
var manualResetEvent = new ManualResetEventSlim();
manualResetEvent.IsSet.ShouldBeFalse();
testScheduler.ScheduleRepeatedly(0, 100, () => manualResetEvent.Set());
manualResetEvent.Wait(500).ShouldBeTrue();
}
finally
{
testScheduler.AsInstanceOf<IDisposable>().Dispose();
}
}
public void When_ScheduleRepeatedly_with_invalid_interval_Then_exception_is_thrown(int invalidInterval)
{
IActionScheduler testScheduler = new HashedWheelTimerScheduler(Sys.Settings.Config, Log);
try
{
XAssert.Throws<ArgumentOutOfRangeException>(() =>
testScheduler.ScheduleRepeatedly(42, invalidInterval, () => { })
);
}
finally
{
testScheduler.AsInstanceOf<IDisposable>().Dispose();
}
}
public void When_ScheduleOnce_many_at_the_same_time_Then_all_fires(int[] times)
{
// Prepare, set up actions to be fired
IActionScheduler scheduler = new HashedWheelTimerScheduler(Sys.Settings.Config, Log);
try
{
foreach (var time in times)
{
var t = time;
scheduler.ScheduleOnce(time, () => TestActor.Tell("Test" + t));
}
//Perform the test
ExpectMsg("Test1");
ExpectMsg("Test1");
ExpectMsg("Test50");
ExpectMsg("Test50");
ExpectMsg("Test100");
ExpectMsg("Test100");
ExpectNoMsg(50);
}
finally
{
scheduler.AsInstanceOf<IDisposable>().Dispose();
}
}
public void ScheduleOnceTests()
{
// Prepare, set up actions to be fired
IActionScheduler testScheduler = new HashedWheelTimerScheduler(Sys.Settings.Config, Log);
try
{
testScheduler.ScheduleOnce(50, () => TestActor.Tell("Test1"));
testScheduler.ScheduleOnce(100, () => TestActor.Tell("Test2"));
ExpectMsg("Test1");
ExpectMsg("Test2");
ExpectNoMsg(100);
}
finally
{
testScheduler.AsInstanceOf<IDisposable>().Dispose();
}
}
public void When_ScheduleTellRepeatedly_with_0_delay_Then_action_is_executed_immediately()
{
IScheduler scheduler = new HashedWheelTimerScheduler(Sys.Settings.Config, Log);
try
{
scheduler.ScheduleTellRepeatedly(0, 60*1000, TestActor, "Test", ActorRefs.NoSender);
ExpectMsg("Test");
}
finally
{
scheduler.AsInstanceOf<IDisposable>().Dispose();
}
}
public void When_ScheduleTellRepeatedly_with_invalid_interval_Then_exception_is_thrown(int invalidInterval)
{
IScheduler scheduler = new HashedWheelTimerScheduler(Sys.Settings.Config, Log);
try
{
XAssert.Throws<ArgumentOutOfRangeException>(() =>
scheduler.ScheduleTellRepeatedly(42, invalidInterval, TestActor, "Test", ActorRefs.NoSender)
);
ExpectNoMsg(50);
}
finally
{
scheduler.AsInstanceOf<IDisposable>().Dispose();
}
}
public void ScheduleTellOnceTests(int[] times)
{
// Prepare, set up messages to be sent
IScheduler scheduler = new HashedWheelTimerScheduler(Sys.Settings.Config, Log);
try
{
foreach (var time in times)
{
scheduler.ScheduleTellOnce(time, TestActor, "Test" + time, ActorRefs.NoSender);
}
ExpectMsg("Test1");
ExpectMsg("Test50");
ExpectMsg("Test110");
ExpectNoMsg(50);
}
finally
{
scheduler.AsInstanceOf<IDisposable>().Dispose();
}
}
