Added test to verify #304
Added test to verify #304

FlorianRappl/AngleSharp,AngleSharp/AngleSharp,FlorianRappl/AngleSharp,FlorianRappl/AngleSharp,AngleSharp/AngleSharp,AngleSharp/AngleSharp,AngleSharp/AngleSharp,FlorianRappl/AngleSharp,AngleSharp/AngleSharp