public void IgnoreColumnEmptyNamespace()
{
DataColumn col = new DataColumn("TEST");
col.Namespace = "urn:foo";
DataSet ds = new DataSet("DS");
ds.Namespace = "urn:foo";
DataTable dt = new DataTable("tab");
ds.Tables.Add(dt);
dt.Columns.Add(col);
dt.Rows.Add(new object[] { "test" });
StringWriter sw = new StringWriter();
ds.WriteXml(new XmlTextWriter(sw));
string xml = @"<DS xmlns=""urn:foo""><tab><TEST>test</TEST></tab></DS>";
Assert.Equal(xml, sw.ToString());
}