// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// @dart = 2.9

/// @assertion Future<T> first
/// read-only
/// @description Checks that [first] is read only
/// @author iarkh@unipro.ru

import "../../../Utils/expect.dart";
import "dart:io";

main() {
  dynamic sin = stdin;
  Expect.throws(() { sin.first = 1; }, (e) => e is NoSuchMethodError);
}