public void ConstrainToHeight_ResizesTheSuppliedImage_WhenItIsTallerThanTheDesiredHeight()
 {
     using (var bitmap = new Bitmap(200, 300))
     {
         const int newHeight = 20;
         var resizedBitmap = bitmap.ConstrainToHeightOf(newHeight);
         Assert.That(resizedBitmap.Height, Is.EqualTo(newHeight));
     }
 }
        public void ConstrainToHeight_DoesNotResizeTheSuppliedImage_WhenItIsShorterThanTheDesiredHeight()
        {
            const int originalHeight = 300;

            using (var bitmap = new Bitmap(200, originalHeight))
            {
                const int newHeight = 400;
                var resizedBitmap = bitmap.ConstrainToHeightOf(newHeight);
                Assert.That(resizedBitmap.Height, Is.EqualTo(originalHeight));
            }
        }