| // 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. |
| |
| /** |
| * @assertion Let C = S0 be a class declared in library L, and let |
| * {S1 ... Sk} be the set of all superclasses of C, where Si is the superclass |
| * of Si-1 for i in 1..k. Let C declare a member m, and let m' be a member |
| * of Sj for j in 1..k, that has the same name as m, such that m' is |
| * accessible to L. Then m overrides m' if m' is not already overridden by a |
| * member of at least one of S1 ... Sj-1 and neither m nor m' are fields. |
| * @description Checks that an instance method can override another instance |
| * method. Test type aliases |
| * @author sgrekhov@unipro.ru |
| */ |
| import "../../../../Utils/expect.dart"; |
| |
| class A { |
| foo() { return 'A'; } |
| } |
| |
| class B extends A { |
| foo() { return 'B'; } |
| } |
| |
| main() { |
| A a = new B(); |
| Expect.equals('B', a.foo()); |
| } |
