public void IsEmpty_WithTwoItems_IsFalse()
{
var queue = new WaitQueue<int>();
queue.Enqueue(item0, none).WaitEx();
queue.Enqueue(item1, none).WaitEx();
Assert.IsFalse(queue.IsEmpty(none).ResultEx());
}
public void Dequeue_EndEnqueue_IsComplete()
{
var queue = new WaitQueue<int>();
var task1 = queue.Enqueue(item0, none);
var task2 = queue.Enqueue(item1, none);
Test.Async(async () =>
{
await task1;
await task2;
Assert.IsFalse(await queue.IsEmpty(none));
Assert.IsFalse(await queue.IsComplete(none));
Assert.IsFalse(await queue.IsEnded(none));
await queue.EndEnqueue(none);
Assert.IsTrue(await queue.IsEnded(none));
Assert.IsFalse(await queue.IsEmpty(none));
Assert.IsFalse(await queue.IsComplete(none));
while (queue.Count > 0)
await queue.Dequeue(none);
Assert.IsTrue(await queue.IsComplete(none));
Assert.IsTrue(await queue.IsEmpty(none));
Assert.IsTrue(await queue.IsEnded(none));
});
Assert.IsTrue(task1.IsCompleted);
Assert.IsTrue(task2.IsCompleted);
}
public void IsEmpty_WhenEmpty_IsTrue()
{
var queue = new WaitQueue<int>();
Assert.IsTrue(queue.IsEmpty(none).ResultEx());
}
public void Cancelled_BeforeDequeue_Faults()
{
var queue = new WaitQueue<int>();
var cts = new CancellationTokenSource();
cts.Cancel();
var task = queue.Dequeue(cts.Token);
AssertEx.ThrowsExceptionAsync<OperationCanceledException>(task).GetAwaiter().GetResult();
Assert.IsTrue(task.IsCanceled);
Assert.IsTrue(queue.IsEmpty(none).ResultEx());
}
public void Cancelled_Dequeue()
{
var queue = new WaitQueue<int>();
var cts = new CancellationTokenSource();
var task0 = queue.Dequeue(cts.Token);
Task.Run(async () =>
{
// wait until dequeue request gets on waitlist
while (queue.WaitCount == 0)
await Task.Delay(10);
Assert.AreEqual<int>(1, queue.WaitCount);
}).GetAwaiter().GetResult();
cts.Cancel();
AssertEx.ThrowsExceptionAsync<OperationCanceledException>(task0).GetAwaiter().GetResult();
var isEmpty = queue.IsEmpty(none).GetAwaiter().GetResult();
Assert.IsTrue(isEmpty);
}