LibTest/io/IOSink/writeAll_A01_t03.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 void writeAll(Iterable objects, [String separator = ""])
/// Iterates over the given [objects] and writes them in sequence.
/// @description Checks that [writeAll] throws [Error] if [encoding] is [null].
/// @author iarkh@unipro.ru

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

class MyStreamConsumer extends StreamConsumer<List<int>> {
  Future addStream(Stream<List> stream) { return new Future(() {}); }
  Future close() { return new Future((){}); }
}

main() {
  StreamConsumer consumer = new MyStreamConsumer();
  IOSink sink = new IOSink(consumer, encoding : null);
  Expect.throws(() {
    sink.writeAll(["testme"]);
  }, (e) => e is NoSuchMethodError);
  sink.close();
}