public void LimitedSizeQueueCanClearItems()
{
var q = new LimitedSizeQueue <int>(3);
Assert.IsTrue(q.TryEnqueue(1));
Assert.IsTrue(q.TryEnqueue(2));
Assert.IsTrue(q.TryEnqueue(3));
Assert.IsFalse(q.TryEnqueue(4));
Assert.AreEqual(3, q.Count);
Assert.AreEqual(3, q.Limit);
q.Clear();
Assert.AreEqual(0, q.Count);
Assert.AreEqual(3, q.Limit);
var items = string.Join(", ", q.Select(i => i.ToString()).ToArray());
Assert.AreEqual(string.Empty, items);
}
public void LimitedSizeQueueLimitsTheSizeOfTheInternalQueue()
{
var q = new LimitedSizeQueue <int>(3);
Assert.AreEqual(0, q.Count);
Assert.AreEqual(3, q.Limit);
Assert.IsFalse(q.TryPeek(out _));
Assert.IsFalse(q.TryDequeue(out _));
Assert.IsTrue(q.TryEnqueue(1));
Assert.IsTrue(q.TryEnqueue(2));
Assert.IsTrue(q.TryEnqueue(3));
Assert.IsFalse(q.TryEnqueue(4));
Assert.IsFalse(q.TryEnqueue(5));
var items = string.Join(", ", q.Select(i => i.ToString()).ToArray());
Assert.AreEqual("1, 2, 3", items);
Assert.IsTrue(q.TryDequeue(out var item));
Assert.AreEqual(1, item);
Assert.IsTrue(q.TryEnqueue(6));
Assert.IsFalse(q.TryEnqueue(7));
Assert.IsTrue(q.TryDequeue(out item));
Assert.AreEqual(2, item);
Assert.IsTrue(q.TryDequeue(out item));
Assert.AreEqual(3, item);
Assert.IsTrue(q.TryPeek(out item));
Assert.AreEqual(6, item);
Assert.IsTrue(q.TryDequeue(out item));
Assert.AreEqual(6, item);
Assert.IsFalse(q.TryPeek(out _));
Assert.IsFalse(q.TryDequeue(out _));
}
