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// 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.
/// @assertion Future flush()
/// This method must not be called while an [addStream] is incomplete.
/// @description Checks that [flush] causes error if [addStream] is currently
/// incomplete.
/// @author
import "../../../Utils/expect.dart";
import "dart:async";
import "dart:io";
test(Stdout sink) async {
Stream<List<int>> stream = new Stream<List<int>>.fromIterable([[1, 2]]);
sink.addStream(stream).then((x) {
new Future.delayed(new Duration(seconds: 3));
Expect.throws(() { sink.flush(); }, (e) => e is StateError);
main(List<String> args) {