public void ShouldThrowExceptionWhenFileNameIsEmpty()
 {
     Assert.Throws <ArgumentException>("fileName", () =>
     {
         MagickNET.SetDefaultFontFile(string.Empty);
     });
 }
 public void ShouldThrowExceptionWhenFileNameIsNull()
 {
     Assert.Throws <ArgumentNullException>("fileName", () =>
     {
         MagickNET.SetDefaultFontFile((string)null);
     });
 }