[Fact] //this is a the test attribute when using xUnit
public void When_xml_Something_Then_serialize_returns_null()
{
string serializedObject = "<?xml version=\"1.0\" encoding=\"utf-8\"?><MyClass xmlns:xsi=\"http://www.w3asdsadasdasd.org/2001/XMLSchema-instance\"></MyClass>";
using (var stringReader = new StringReader(serializedObject))
{
Assert.Null(new XmlSerializer(typeof(MyClass)).Deserialize(stringReader));
}
}