public void Enqueue_WhenCalled_ShouldAddItemToBackOfQueue(int capacity, int range)
        {
            // Arrange
            _queue = new QueueWithPointerArray <int>(capacity);

            // Act
            for (var i = 1; i <= range; i++)
            {
                _queue.Enqueue(i);
            }

            // Assert
            Assert.That(_queue.Peek(), Is.EqualTo(1));
            Assert.That(_queue.Size, Is.EqualTo(range));
        }
 public void SetUp()
 {
     _queue = new QueueWithPointerArray <int>(_capacity);
 }