public void ReadXmlSchema_ByStream()
{
DataSet ds1 = new DataSet();
ds1.Tables.Add(DataProvider.CreateParentDataTable());
ds1.Tables.Add(DataProvider.CreateChildDataTable());
MemoryStream ms1 = new MemoryStream();
MemoryStream ms2 = new MemoryStream();
//write xml schema only
//ds1.WriteXmlSchema (ms);
ds1.Tables[0].WriteXmlSchema(ms1);
ds1.Tables[1].WriteXmlSchema(ms2);
MemoryStream ms11 = new MemoryStream(ms1.GetBuffer());
MemoryStream ms22 = new MemoryStream(ms2.GetBuffer());
//copy schema
//DataSet ds2 = new DataSet ();
DataTable dt1 = new DataTable();
DataTable dt2 = new DataTable();
//ds2.ReadXmlSchema (ms1);
dt1.ReadXmlSchema(ms11);
dt2.ReadXmlSchema(ms22);
//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);
}