| // Copyright (c) 2011, 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"; |
| |
| class A { |
| const A(); |
| } |
| |
| class B extends A { |
| const B(); |
| } |
| |
| main() { |
| var map1 = new Map<B, B>(); |
| map1[const B()] = const B(); |
| var map2 = new Map<B, B>(); |
| var list = <B>[const B()]; |
| |
| var maps = [map1, map2]; |
| for (var map in maps) { |
| // Test that the map accepts a key is not of the same type: |
| // Map<B, ?>[A] |
| Expect.isNull(map[new A()]); |
| } |
| } |