public void ManyAwaits()
{
// Arrange
var sut = QueueStateMonitor.Initialize(0);
// Act
var waitingTasks =
Enumerable.Range(0, 5)
.Select(_ => sut.GetCurrent().NextUpdate)
.ToList();
// Assert
waitingTasks.ShouldAllBe(t => t.IsCompleted == false);
sut.Update(12);
waitingTasks.ShouldAllBe(t => t.IsCompleted);
waitingTasks.ShouldAllBe(t => t.Result.TailIndex == 12);
}
public async Task PulsesBefore()
{
// Arrange
var sut = QueueStateMonitor.Initialize(0);
// Act
sut.Update(1);
sut.Update(2);
sut.Update(3);
var state = sut.GetCurrent();
state.TailIndex.ShouldBe(3);
sut.Update(4);
var update = await state.NextUpdate;
// Assert
update.TailIndex.ShouldBe(4);
}
public PersistentQueue(PersistentQueueConfiguration configuration)
{
Configuration = configuration;
_metaDataItemSize = MetaData.Size();
_indexItemSize = IndexItem.Size();
var indexPageSize = _indexItemSize * configuration.IndexItemsPerPage;
_dataPageSize = Configuration.DataPageSize;
// Init page factories
// MetaPage: Page size = item size => only 1 item possible.
_metaPageFactory = new PageFactory(_metaDataItemSize, Configuration.GetMetaPath(), TimeSpan.FromHours(1));
_indexPageFactory = new PageFactory(indexPageSize, Configuration.GetIndexPath());
_dataPageFactory = new PageFactory(_dataPageSize, Configuration.GetDataPath());
InitializeMetaData();
_queueMonitor = QueueStateMonitor.Initialize(_metaData.TailIndex);
}
public void ShouldContinueOnOtherThread()
{
// Arrange
var sut = QueueStateMonitor.Initialize(0);
;
var pulseThreadId = Thread.CurrentThread.ManagedThreadId;
// Act
var waitThreadIdTask =
sut.GetCurrent().NextUpdate
.ContinueWith(t => Thread.CurrentThread.ManagedThreadId);
sut.Update(0);
// Assert
var waitThreadId = waitThreadIdTask.Result;
waitThreadId.ShouldNotBe(pulseThreadId);
waitThreadId.ShouldNotBe(Thread.CurrentThread.ManagedThreadId);
}
