| // 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. |
| |
| // @dart = 2.9 |
| |
| import "package:expect/expect.dart"; |
| |
| class A { |
| const A(); |
| } |
| |
| class B extends A { |
| const B(); |
| } |
| |
| main() { |
| var set1 = new Set<B>(); |
| set1.add(const B()); |
| var set2 = new Set<B>(); |
| var list = <B>[const B()]; |
| var set3 = list.toSet(); |
| |
| var setOther = new Set<A>(); |
| setOther.add(new A()); |
| var sets = [set1, set2, set3]; |
| for (var setToTest in sets) { |
| // Test that the set accepts another set that is not of the same type: |
| // Set<B>.intersection(Set<A>) |
| Set result = setToTest.intersection(setOther); |
| Expect.isTrue(result.isEmpty); |
| } |
| } |