LibTest/io/Stdout/write_A01_t09.dart

// Copyright (c) 2018, 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 void write(Object obj)
/// Converts [obj] to a [String] by invoking [Object.toString] and adds the
/// encoding of the result to the target consumer.
/// @description Checks that [String] cannot be written if [encoding] is [null].
/// @author iarkh@unipro.ru

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

test(Stdout sink) {
  sink.encoding = null;
  Expect.throws(() { sink.write("testme"); }, (e) => e is NoSuchMethodError);
  sink.close();
}

main() {
  test(stdout);
  test(stderr);
}