blob: eeb806cc8cae3f9d16adeb348135e0078b661170 [file] [log] [blame]
// Copyright (c) 2011, 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 dynamic firstWhere(bool test(E value), {Object orElse()})
/// If none matches, the result of invoking the [orElse] function is returned.
/// @description Checks that the result of invoking the orElse function is
/// returned when none matches.
/// @author kaigorodov
import "dart:collection";
import "../../../Utils/expect.dart";
class TestException {}
check(List list) {
DoubleLinkedQueue queue = new DoubleLinkedQueue.from(list);
Expect.throws(() {
queue.firstWhere((var value) => false, orElse: () {
throw new TestException();
(e) => e is TestException
main() {
check(new List.empty());
check(new List.from([]));
check([1, 2, 3]);