System.Data.Tests.DataTableTest.ReadXmlSchema_ByTextReader C# (CSharp) Метод

        public void ReadXmlSchema_ByTextReader()
        {
            DataSet ds1 = new DataSet();
            ds1.Tables.Add(DataProvider.CreateParentDataTable());
            ds1.Tables.Add(DataProvider.CreateChildDataTable());

            StringWriter sw1 = new StringWriter();
            StringWriter sw2 = new StringWriter();
            //write xml file, schema only
            //ds1.WriteXmlSchema (sw);
            ds1.Tables[0].WriteXmlSchema(sw1);
            ds1.Tables[1].WriteXmlSchema(sw2);

            StringReader sr1 = new StringReader(sw1.GetStringBuilder().ToString());
            StringReader sr2 = new StringReader(sw2.GetStringBuilder().ToString());
            //copy both data and schema
            //DataSet ds2 = new DataSet ();
            DataTable dt1 = new DataTable();
            DataTable dt2 = new DataTable();

            //ds2.ReadXmlSchema (sr);
            dt1.ReadXmlSchema(sr1);
            dt2.ReadXmlSchema(sr2);

            //check xml schema
            // ReadXmlSchema - Tables count
            //Assert.Equal (ds2.Tables.Count, ds1.Tables.Count);

            // ReadXmlSchema - Tables 0 Col count
            Assert.Equal(ds1.Tables[0].Columns.Count, dt1.Columns.Count);

            // ReadXmlSchema - Tables 1 Col count
            Assert.Equal(ds1.Tables[1].Columns.Count, dt2.Columns.Count);

            //check some colummns types
            // ReadXmlSchema - Tables 0 Col type
            Assert.Equal(ds1.Tables[0].Columns[0].GetType(), dt1.Columns[0].GetType());

            // ReadXmlSchema - Tables 1 Col type
            Assert.Equal(ds1.Tables[1].Columns[3].GetType(), dt2.Columns[3].GetType());

            //check that no data exists
            // ReadXmlSchema - Table 1 row count
            Assert.Equal(0, dt1.Rows.Count);

            // ReadXmlSchema - Table 2 row count
            Assert.Equal(0, dt2.Rows.Count);
        }