# File test/test_query.rb, line 140
  def test_model_query_serialize_construct()
    model = Model.new()

    @exns = Namespace.new('http://example.org/')
    lit = Node.new("baz")
    st = Statement.new(@exns['subject'], @exns['pred'], lit)
    model.add_statement(st)

    query = Query.new("CONSTRUCT { ?a ?b ?c . ?b ?a ?c } WHERE { ?a ?b ?c }", "sparql", nil, nil)
    results = query.execute(model)
    assert(results != nil)

    string = results.to_string()

    # length of an RDF/XML string - might change
    assert_equal(string.length(), 401)
  end