LibTest/io/IOSink/done_A03_t01.dart

// 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 done
/// read-only
/// @description Checks that [done] is read only
/// @author iarkh@unipro.ru

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

main() {
  dynamic sink = new IOSink(new StreamController());
  Expect.throws(() { sink.done = null; }, (e) => e is NoSuchMethodError);
  sink.close();
}