public async Task RunTest()
{
var defer = new Defer();
var number = 0;
async Task AsyncFunc()
{
number++;
await Task.Delay(10);
number++;
if (number == 10)
{
defer.Resolve();
}
}
var worker = new AsyncTaskWorker(3);
await worker.Run(AsyncFunc);
await worker.Run(AsyncFunc);
await worker.Run(AsyncFunc);
await worker.Run(AsyncFunc);
await worker.Run(AsyncFunc);
await defer.Wait();
Assert.AreEqual(number, 10);
}
public async Task CancelTest()
{
var flag = false;
using var cancellationTokenSource = new CancellationTokenSource();
var cancellationToken = cancellationTokenSource.Token;
var worker = new AsyncTaskWorker(1);
// blocked task
var blockedDefer = new Defer();
await worker.Run(async() =>
{
await blockedDefer.Wait();
});
// Task will be suspended
var suspendedTask = worker.Run(
() =>
{
flag = true;
return(Task.CompletedTask);
},
cancellationToken);
Assert.IsFalse(suspendedTask.IsCompleted);
Assert.IsFalse(flag);
// Cancel pending suspension
cancellationTokenSource.Cancel();
Assert.ThrowsAsync <OperationCanceledException>(() => suspendedTask.AsTask());
Assert.IsTrue(suspendedTask.IsCanceled);
Assert.IsFalse(flag);
blockedDefer.Resolve();
}
public async Task MaxConcurrencyTest()
{
var defer = new Defer();
var endDefer = new Defer();
var worker = new AsyncTaskWorker(3);
// Three blocked tasks
await worker.Run(() => defer.Wait());
await worker.Run(() => defer.Wait());
await worker.Run(() => defer.Wait());
// Task will be suspended
var step4Task = worker.Run(
() =>
{
endDefer.Resolve();
return(Task.CompletedTask);
});
await Task.Delay(100);
Assert.IsFalse(step4Task.IsCompleted);
Assert.IsFalse(endDefer.IsCompleted);
// End the blocked tasks
defer.Resolve();
// Wait for step4 end
await step4Task;
await endDefer.Wait();
Assert.IsTrue(step4Task.IsCompleted);
}