# File test/test_query.rb, line 158
  def test_model_query_serialize_bindings_json()
    model = Model.new()

    lit = Node.new("baz")
    st = Statement.new(@exns['subject'], @exns['pred'], lit)
    model.add_statement(st)

    query = Query.new("SELECT ?a ?b ?c WHERE (?a ?b ?c)", "rdql", nil, nil)
    results = query.execute(model)
    assert(results != nil)

    string = results.to_string(Uri.new("http://www.w3.org/2001/sw/DataAccess/json-sparql/"), Uri.new("http://example.org/"))

    # length of a SPARQL results format string in JSON - might change
    assert_equal(string.length(), 351)
  end