| // Copyright (c) 2012, 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'; |
| |
| main() { |
| List<int> list1 = <int>[1, 2, 3]; |
| List<int> list2 = const <int>[4, 5, 6]; |
| List<String> list3 = <String>[]; |
| Set<int> set1 = new Set<int>(); |
| set1..add(11)..add(12)..add(13); |
| Set set2 = new Set(); |
| |
| Expect.equals(2, list1.singleWhere((x) => x.isEven)); |
| Expect.equals(3, list1.singleWhere((x) => x == 3)); |
| Expect.throwsStateError(() => list1.singleWhere((x) => x.isOdd)); |
| |
| Expect.equals(6, list2.singleWhere((x) => x == 6)); |
| Expect.equals(5, list2.singleWhere((x) => x.isOdd)); |
| Expect.throwsStateError(() => list2.singleWhere((x) => x.isEven)); |
| |
| Expect.throwsStateError(() => list3.singleWhere((x) => x == 0)); |
| |
| Expect.equals(12, set1.singleWhere((x) => x.isEven)); |
| Expect.equals(11, set1.singleWhere((x) => x == 11)); |
| Expect.throwsStateError(() => set1.singleWhere((x) => x.isOdd)); |
| |
| Expect.throwsStateError(() => set2.singleWhere((x) => true)); |
| } |