System.Data.Tests.DataSetTest2.ReadXmlSchema_ByStream C# (CSharp) Method

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

            MemoryStream ms = new MemoryStream();
            //write xml  schema only
            ds1.WriteXmlSchema(ms);

            MemoryStream ms1 = new MemoryStream(ms.GetBuffer());
            //copy schema
            DataSet ds2 = new DataSet();
            ds2.ReadXmlSchema(ms1);

            //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, ds2.Tables[0].Columns.Count);

            // ReadXmlSchema - Tables 1 Col count
            Assert.Equal(ds1.Tables[1].Columns.Count, ds2.Tables[1].Columns.Count);

            //check some colummns types
            // ReadXmlSchema - Tables 0 Col type
            Assert.Equal(ds1.Tables[0].Columns[0].GetType(), ds2.Tables[0].Columns[0].GetType());

            // ReadXmlSchema - Tables 1 Col type
            Assert.Equal(ds1.Tables[1].Columns[3].GetType(), ds2.Tables[1].Columns[3].GetType());

            //check that no data exists
            // ReadXmlSchema - Table 1 row count
            Assert.Equal(0, ds2.Tables[0].Rows.Count);

            // ReadXmlSchema - Table 2 row count
            Assert.Equal(0, ds2.Tables[1].Rows.Count);
        }