public async Task SchedulingSimpleTest()
{
const int TasksCount = 5000;
var threadIds = new HashSetEx <int>();
var priorities = new HashSetEx <ThreadPriority>();
var taskWasNotContinuedInline = false;
var tasks = new Task[TasksCount];
var rnd = new Random(0);
for (int i = 0; i < TasksCount; i++)
{
tasks[i] = HeavyComputationTaskScheduler.Run(
async() =>
{
lock (threadIds)
{
threadIds.Add(Thread.CurrentThread.ManagedThreadId);
priorities.Add(Thread.CurrentThread.Priority);
}
Thread.SpinWait(100_000 * rnd.Next(3, 6));
await Task.Yield();
lock (threadIds)
{
threadIds.Add(Thread.CurrentThread.ManagedThreadId);
priorities.Add(Thread.CurrentThread.Priority);
}
await Task.Delay(1);
var tid = Thread.CurrentThread.ManagedThreadId;
await Task.CompletedTask;
if (tid != Thread.CurrentThread.ManagedThreadId)
{
taskWasNotContinuedInline = true;
}
lock (threadIds)
{
threadIds.Add(Thread.CurrentThread.ManagedThreadId);
priorities.Add(Thread.CurrentThread.Priority);
}
Thread.SpinWait(100_000 * rnd.Next(3, 6));
});
}
await Task.WhenAll(tasks);
//// threadIds.Count.Should().Be(Environment.ProcessorCount);
priorities.Count.Should().Be(1);
priorities.Single().Should().Be(ThreadPriority.BelowNormal);
taskWasNotContinuedInline.Should().BeFalse();
}