public void CurrentPixelType__receives_pixel_from_image_typed_as_water()
        {
            var bmp = new Bitmap("Testimages/testimage1.png");
            try {
                var imageRead = new ImageReader(bmp);
                int i = 0;
                while (i++ < 50)
                    imageRead.NextColumn();

                var result = imageRead.CurrentPixelType();

                imageRead.CurrentColumn.Should().BeGreaterThan(30);
                result.Should().Be(PixelType.Water);
            }
            finally {
                bmp.Dispose();
            }
        }