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);
}
private void WaitUntilHelper(Func <bool> func)
{
Assert.IsTrue(MiscUtility.WaitUntil(func, TimeSpan.FromSeconds(15), 50), "WaitUntilHelper");
}