public void WhenEnumerating_Then_ItemsAreInReverseChronologicalOrder()
        {
            const int size  = 5;
            var       items = Enumerable.Range(1, size).ToList();
            var       sut   = new RollingWindow <int>(size);

            items.ForEach(sut.Add);

            items.Reverse();
            Assert.That(sut.AsEnumerable(), Is.EquivalentTo(items));
        }