public void OperationQueueTest_OperationStreamGetterIsInvokedOncePerDrain()
{
var list = new OperationList();
list.AddOperation(null);
int invokeCount = 0;
Func <IOperationStream> streamGetter = () =>
{
invokeCount++;
return(list);
};
var queue = new OperationFetcher.OperationQueue(streamGetter, new OperationProcessorInfo
{
Callback = new TrackingOperationProcessor().Process
});
var task1 = queue.DrainAsync();
Assert.AreEqual(1, invokeCount);
var task2 = queue.DrainAsync();
Assert.AreEqual(2, invokeCount);
}
public void OperationQueueTest_ParallelDrain()
{
var operations = new List <IOperation> {
new OperationStub(), new OperationStub(), null
};
var opList = new OperationList();
foreach (var item in operations)
{
opList.AddOperation(item);
}
var processor = new TrackingOperationProcessor();
var opQueue = new OperationFetcher.OperationQueue(() => opList, new OperationProcessorInfo
{
SupportsConcurrentProcessing = true,
Callback = processor.Process
});
var task = opQueue.DrainAsync();
for (int i = 0; i < operations.Count; i++)
{
// we are processing asynchronously
// tell the list to provide an operation to the queue
opList.CompleteOperation();
if (i == operations.Count - 1)
{
// the last null is not received
continue;
}
// the operation has been sent to the callback
// the callback has not completed the task
// the queue will continue (this loop will run)
Assert.IsTrue(MiscUtility.WaitUntil(() => processor.GetOperations().Count == i + 1, TimeSpan.FromSeconds(1), 50));
Assert.AreSame(operations[i], processor.GetOperations()[i].Item2);
}
// the task should be complete
task.AssertWaitCompletes(500);
}
public void OperationQueueTest_DrainTaskIsCompletedWhenNullOperationIsReceived()
{
var opList = new OperationList();
opList.AddOperation(null);
var processor = new TrackingOperationProcessor();
var opQueue = new OperationFetcher.OperationQueue(() => opList, new OperationProcessorInfo
{
SupportsConcurrentProcessing = false,
Callback = processor.Process
});
var task = opQueue.DrainAsync();
opList.CompleteOperation();
// the task should be complete
task.AssertWaitCompletes(500);
}
public void OperationQueueTest_FailingOperationStreamGetterReturnsException()
{
var ex = new InvalidOperationException();
Func <IOperationStream> streamGetter = () => { throw ex; };
var queue = new OperationFetcher.OperationQueue(streamGetter, new OperationProcessorInfo
{
Callback = new TrackingOperationProcessor().Process
});
var task = queue.DrainAsync();
try
{
task.Wait();
Assert.Fail("expceted ex");
}
catch (AggregateException aex)
{
Assert.AreSame(ex, aex.InnerException);
}
}
private void ExceptionFromOperationFetchingIsThrownTestHelper(ThrowingOperationList list)
{
var ex = new InvalidOperationException();
list.ExceptionToThrow = ex;
var queue = new OperationFetcher.OperationQueue(() => list, new OperationProcessorInfo
{
Callback = new TrackingOperationProcessor().Process
});
var task = queue.DrainAsync();
try
{
task.Wait();
Assert.Fail("expceted ex");
}
catch (AggregateException aex)
{
Assert.AreSame(ex, aex.InnerException);
}
}