public void TestEnsureExtraCapacity()
        {
            FasterList <int> listA = new FasterList <int>();

            listA.IncrementCountBy(10);
            listA.IncreaseCapacityBy(10);

            Assert.That(listA.capacity, Is.EqualTo(25));
            Assert.That(listA.count, Is.EqualTo(10));
        }