Bob Nystrom
edee53f93d
What is dead may never die. Change-Id: I80ef766b8ce2b6e1416df8e1f9b91fb74169dc79 Reviewed-on: https://dart-review.googlesource.com/7483 Reviewed-by: William Hesse <whesse@google.com>
33 lines
1.2 KiB
Dart
33 lines
1.2 KiB
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'package:expect/expect.dart';
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main() {
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List<int> list1 = <int>[1, 2, 3];
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List<int> list2 = const <int>[4, 5, 6];
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List<String> list3 = <String>[];
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Set<int> set1 = new Set<int>();
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set1..add(11)..add(12)..add(13);
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Set set2 = new Set();
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Expect.equals(2, list1.singleWhere((x) => x.isEven));
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Expect.equals(3, list1.singleWhere((x) => x == 3));
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Expect.throws(
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() => list1.singleWhere((x) => x.isOdd), (e) => e is StateError);
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Expect.equals(6, list2.singleWhere((x) => x == 6));
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Expect.equals(5, list2.singleWhere((x) => x.isOdd));
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Expect.throws(
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() => list2.singleWhere((x) => x.isEven), (e) => e is StateError);
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Expect.throws(() => list3.singleWhere((x) => x == 0), (e) => e is StateError);
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Expect.equals(12, set1.singleWhere((x) => x.isEven));
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Expect.equals(11, set1.singleWhere((x) => x == 11));
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Expect.throws(() => set1.singleWhere((x) => x.isOdd));
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Expect.throws(() => set2.singleWhere((x) => true), (e) => e is StateError);
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}
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