public void WhenAReadOperationIsBeingPerformed_ThenWritesAreNotProcessedUntilTheReadOperationIsDone()
{
var lastUpdate = "none";
var readSync = new AutoResetEvent(false);
var writeSync = new AutoResetEvent(false);
var barrier = new Barrier(2);
ThreadPool.QueueUserWorkItem((o) =>
{
readSync.WaitOne(2000);
this.coordinator.ExecuteReadOperation(() =>
{
writeSync.Set();
Thread.Sleep(1000);
lastUpdate = "read";
});
barrier.Await();
});
readSync.Set();
writeSync.WaitOne(2000);
this.coordinator.ExecuteWriteOperation(() =>
{
lastUpdate = "write";
});
barrier.Await();
Assert.AreEqual("write", lastUpdate);
}
public void WhenAReadOperationIsBeingPerformed_ThenWritesAreNotProcessedUntilTheReadOperationIsDone()
{
var lastUpdate = "none";
var readSync = new AutoResetEvent(false);
var writeSync = new AutoResetEvent(false);
var barrier = new Barrier(2);
ThreadPool.QueueUserWorkItem((o) =>
{
readSync.WaitOne(2000);
this.coordinator.ExecuteReadOperation(() =>
{
writeSync.Set();
Thread.Sleep(1000);
lastUpdate = "read";
});
barrier.Await();
});
readSync.Set();
writeSync.WaitOne(2000);
this.coordinator.ExecuteWriteOperation(() =>
{
lastUpdate = "write";
});
barrier.Await();
Assert.AreEqual("write", lastUpdate);
}
public void WhenConfigurationChangeEventSourceRaisesItsEvent_ThenTheUpdateHandlerCommitsAreGuardedByTheWriterLock()
{
var lastUpdate = "none";
var updateSync = new AutoResetEvent(false);
var readSync = new AutoResetEvent(false);
var barrier = new Barrier(2);
var updateHandler = new Mock <ILoggingUpdateHandler>();
updateHandler.Setup(h => h.CommitUpdate(It.IsAny <object>()))
.Callback(() =>
{
readSync.Set();
Thread.Sleep(1000);
lastUpdate = "config update";
});
this.coordinator.RegisterLoggingUpdateHandler(updateHandler.Object);
ThreadPool.QueueUserWorkItem((o) =>
{
updateSync.WaitOne(2000);
this.source.OnSectionChanged <LoggingSettings>(
new SectionChangedEventArgs <LoggingSettings>(new LoggingSettings(), this.locator));
barrier.Await();
});
updateSync.Set();
readSync.WaitOne(2000);
this.coordinator.ExecuteReadOperation(() =>
{
lastUpdate = "read";
});
barrier.Await();
Assert.AreEqual("read", lastUpdate);
}
public void WhenConfigurationChangeEventSourceRaisesItsEvent_ThenTheUpdateHandlerCommitsAreGuardedByTheWriterLock()
{
var lastUpdate = "none";
var updateSync = new AutoResetEvent(false);
var readSync = new AutoResetEvent(false);
var barrier = new Barrier(2);
var updateHandler = new Mock<ILoggingUpdateHandler>();
updateHandler.Setup(h => h.CommitUpdate(It.IsAny<object>()))
.Callback(() =>
{
readSync.Set();
Thread.Sleep(1000);
lastUpdate = "config update";
});
this.coordinator.RegisterLoggingUpdateHandler(updateHandler.Object);
ThreadPool.QueueUserWorkItem((o) =>
{
updateSync.WaitOne(2000);
this.source.OnSectionChanged<LoggingSettings>(
new SectionChangedEventArgs<LoggingSettings>(new LoggingSettings(), this.locator));
barrier.Await();
});
updateSync.Set();
readSync.WaitOne(2000);
this.coordinator.ExecuteReadOperation(() =>
{
lastUpdate = "read";
});
barrier.Await();
Assert.AreEqual("read", lastUpdate);
}
