public void SingleElement()
{
DataSet ds = GetDataSet(_xml1, null);
AssertDataSet("xml1", ds, "root", 0, 0);
ds = GetDataSet(_xml4, null);
AssertDataSet("xml4", ds, "root", 0, 0);
// namespaces
ds = GetDataSet(_xml14, null);
AssertDataSet("xml14", ds, "root", 0, 0);
Assert.Equal(string.Empty, ds.Prefix);
Assert.Equal("urn:foo", ds.Namespace);
ds = GetDataSet(_xml17, null);
AssertDataSet("xml17", ds, "root", 0, 0);
Assert.Equal("urn:foo", ds.Namespace);
}