mirror of
https://github.com/dart-lang/sdk
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284f662022
Change-Id: I764d0457da85b2935e1d83309eab4c4b5b3ea000 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/126204 Commit-Queue: Bob Nystrom <rnystrom@google.com> Reviewed-by: Lasse R.H. Nielsen <lrn@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com>
44 lines
2 KiB
Dart
44 lines
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.lastWhere((x) => x!.isEven));
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Expect.equals(3, list1.lastWhere((x) => x!.isOdd));
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Expect.throwsStateError(() => list1.lastWhere((x) => x! > 3));
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Expect.equals(null, list1.lastWhere((x) => x! > 3, orElse: () => null));
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Expect.equals(499, list1.lastWhere((x) => x! > 3, orElse: () => 499));
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Expect.equals(6, list2.lastWhere((x) => x!.isEven));
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Expect.equals(5, list2.lastWhere((x) => x!.isOdd));
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Expect.throwsStateError(() => list2.lastWhere((x) => x == 0));
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Expect.equals(null, list2.lastWhere((x) => false, orElse: () => null));
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Expect.equals(499, list2.lastWhere((x) => false, orElse: () => 499));
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Expect.throwsStateError(() => list3.lastWhere((x) => x == 0));
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Expect.throwsStateError(() => list3.lastWhere((x) => true));
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Expect.equals(null, list3.lastWhere((x) => true, orElse: () => null));
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Expect.equals("str", list3.lastWhere((x) => false, orElse: () => "str"));
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Expect.equals(12, set1.lastWhere((x) => x!.isEven));
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var odd = set1.lastWhere((x) => x!.isOdd);
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Expect.isTrue(odd == 11 || odd == 13);
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Expect.throwsStateError(() => set1.lastWhere((x) => false));
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Expect.equals(null, set1.lastWhere((x) => false, orElse: () => null));
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Expect.equals(499, set1.lastWhere((x) => false, orElse: () => 499));
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Expect.throwsStateError(() => set2.lastWhere((x) => false));
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Expect.throwsStateError(() => set2.lastWhere((x) => true));
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Expect.equals(null, set2.lastWhere((x) => true, orElse: () => null));
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Expect.equals(499, set2.lastWhere((x) => false, orElse: () => 499));
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}
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