| // Copyright (c) 2019, 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. |
| |
| import "package:expect/expect.dart"; |
| import 'dart:_foreign_helper' show JS, TYPE_REF; |
| import 'dart:_runtime' as dart; |
| |
| void main() { |
| dynamic data = JS('', '[1, 2, 3, 4]'); |
| Expect.isFalse(data is List<int>); |
| |
| var list = dart.constList<int>(data); |
| Expect.isTrue(list is List<int>); |
| Expect.throws(() { |
| list[0] = 0; |
| }); |
| |
| var set = dart.constSet<int>(data); |
| Expect.isTrue(set is Set<int>); |
| Expect.isTrue(set.contains(3)); |
| Expect.throws(() => set.clear()); |
| |
| var map = dart.constMap<int, int>(data); |
| Expect.isTrue(map is Map<int, int>); |
| Expect.equals(map[1], 2); |
| Expect.throws(() { |
| map[1] = 42; |
| }); |
| } |