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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.
/// @assertion abstract E reduce(E combine(E value, E element))
/// The iterable must have at least one element.
/// @description Checks that error state exception is thrown if queue is empty.
/// @author
import "dart:collection";
import "../../../Utils/expect.dart";
test (combine, element) {
return combine + element;
main() {
DoubleLinkedQueue queue = new DoubleLinkedQueue();
Expect.throws(() { queue.reduce(test); }, (e) => e is StateError);