| // Copyright (c) 2012, 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. |
| // Check fail because of cycles in super class relationship. |
| |
| // @dart = 2.9 |
| |
| import "package:expect/expect.dart"; |
| |
| class Foo implements Bar {} |
| |
| class C {} |
| |
| class Bar |
| extends Foo // //# 00: compile-time error |
| implements Foo // //# 01: compile-time error |
| {} |
| |
| class ImplementsC implements C |
| , C // //# 02: compile-time error |
| {} |
| |
| // Spec says: It is a compile-time error if the superclass |
| // of a class C appears in the implements clause of C. |
| class ExtendsC extends C |
| implements C // //# 03: compile-time error |
| {} |
| |
| main() { |
| Expect.isTrue(new Foo() is Foo); |
| Expect.isTrue(new ImplementsC() is C); |
| Expect.isTrue(new ExtendsC() is C); |
| } |