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1332cf8c41
Change-Id: I2a35de7f79b8d768cdd0144b3bf5de87fa929942 Issue: https://github.com/dart-lang/sdk/issues/42107 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/154301 Commit-Queue: Nicholas Shahan <nshahan@google.com> Reviewed-by: Joshua Litt <joshualitt@google.com>
31 lines
856 B
Dart
31 lines
856 B
Dart
// Copyright (c) 2019, 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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import 'dart:_foreign_helper' show JS;
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import 'dart:_runtime' as dart;
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void main() {
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dynamic data = JS('', '[1, 2, 3, 4]');
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Expect.isFalse(data is List<int>);
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var list = dart.constList(data, dart.unwrapType(int));
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Expect.isTrue(list is List<int>);
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Expect.throws(() {
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list[0] = 0;
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});
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var set = dart.constSet<int>(data);
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Expect.isTrue(set is Set<int>);
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Expect.isTrue(set.contains(3));
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Expect.throws(() => set.clear());
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var map = dart.constMap<int, int>(data);
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Expect.isTrue(map is Map<int, int>);
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Expect.equals(map[1], 2);
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Expect.throws(() {
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map[1] = 42;
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});
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}
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