private static void ItemProcessingTask_Simple_Core()
{
var proc = new ItemProcessor();
var task = new ItemProcessingTask(proc);
Assert.AreEqual(2, task.Priority);
Assert.IsFalse(task.IsRunnable);
task.RecalculatePriority();
Assert.IsFalse(task.IsRunnable);
proc.Add();
Assert.IsTrue(task.IsRunnable);
using var s = PhysicalScheduler.Create();
using var l = new LogicalScheduler(s);
l.Schedule(task);
proc.Events[0].WaitOne();
proc.Add();
l.RecalculatePriority();
proc.Events[1].WaitOne();
}