System.Xml.Tests.TCDocType.docType_4 C# (CSharp) Method

        public int docType_4()
        {
            String docName = "";
            if (CurVariation.Param.ToString() == "String.Empty")
                docName = String.Empty;
            else if (CurVariation.Param.ToString() == "null")
                docName = null;
            using (XmlWriter w = CreateWriter())
            {
                try
                {
                    w.WriteDocType(docName, null, null, "test1");
                }
                catch (ArgumentException e)
                {
                    CError.WriteLineIgnore(e.ToString());
                    CError.Compare(w.WriteState, (WriterType == WriterType.CharCheckingWriter) ? WriteState.Start : WriteState.Error, "WriteState should be Error");
                    return TEST_PASS;
                }
                catch (NullReferenceException e)
                {
                    CError.WriteLineIgnore(e.ToString());
                    CError.Compare(w.WriteState, (WriterType == WriterType.CharCheckingWriter) ? WriteState.Start : WriteState.Error, "WriteState should be Error");
                    return TEST_PASS;
                }
            }
            CError.WriteLine("Did not throw exception");
            return TEST_FAIL;
        }