public void GetValues_ReturnsAllPixels()
        {
            using (IMagickImage image = new MagickImage(MagickColors.Purple, 4, 2))
            {
                using (IPixelCollection pixels = image.GetPixels())
                {
                    var values = pixels.GetValues();
                    int length = 4 * 2 * 3;

                    Assert.AreEqual(length, values.Length);
                }
            }
        }