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// Copyright (c) 2016, 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
import "package:expect/expect.dart";
import "dart:convert";
class MySink implements Sink<List<int>> {
List<int> accumulated = <int>[];
bool isClosed = false;
int add(List<int> list) {
accumulated.addAll(list);
return list.length;
}
String close() {
isClosed = true;
// Returning a value here triggered a bug, where the caller was trying to
// pass the value through its 'void' return type.
// Example: void close() => _sink.close();
return "done";
}
}
main() {
var mySink = new MySink();
var byteSink = new ByteConversionSink.from(mySink);
byteSink.add([1, 2, 3]);
byteSink.close();
Expect.listEquals([1, 2, 3], mySink.accumulated);
Expect.isTrue(mySink.isClosed);
}