public void ShouldThrowExceptionOnCreateGifThumbnailButNonMovingImage()
{
var ex = Assert.Throws<BlogException>(() => _imageHelper.CreateGifThumbnail(
_rootPath + @"\TestImages\Gif_Image_Nonmoving.gif", _rootPath + @"\TestImages\New\", "tn_"));
Assert.That(ex.Message, Is.EqualTo("Image not animated"));
Assert.IsFalse(File.Exists(_rootPath + @"\TestImages\New\tn_Gif_Image_Nonmoving.jpg"));
}