public void First後にContinueWithでフレームが進むかどうか()
{
int?[] continueWithCount = new int?[3];
int? completedCount = null;
int? runCompletedCount = null;
var t0 = Task.Run(TestIteratorZero);
var t1 = Task.Run(TestIteratorOne);
var t2 = Task.Run(TestIteratorTwo);
// yield return の後のUpdateCountの値を確かめる。
TaskEx.First(t0).ContinueWith(_ => continueWithCount[0] = Task.DefaultScheduler.UpdateCount);
TaskEx.First(t1).ContinueWith(_ => continueWithCount[1] = Task.DefaultScheduler.UpdateCount);
TaskEx.First(t2).ContinueWith(_ => continueWithCount[2] = Task.DefaultScheduler.UpdateCount);
// CompletedTaskのcontinueWithは、Updatecountを挟まず処理できる。
TaskEx.First(Task.CompletedTask).ContinueWith(_ => completedCount = Task.DefaultScheduler.UpdateCount);
// Task.Run(CompletedTask)の場合でも、UpdateCountを挟まず処理できる。
TaskEx.First(Task.Run(Task.CompletedTask)).ContinueWith(_ => runCompletedCount = Task.DefaultScheduler.UpdateCount);
Task.DefaultScheduler.Update(10);
Assert.AreEqual(iteratorCount[0], continueWithCount[0]);
Assert.AreEqual(iteratorCount[1], continueWithCount[1]);
Assert.AreEqual(iteratorCount[2], continueWithCount[2]);
Assert.AreEqual(0, completedCount);
Assert.AreEqual(0, runCompletedCount);
}