| // 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 It is no static warning if an instance method m1 overrides an |
| /// instance member m2 and the type of m1 is not a subtype of the type of m2. |
| /// @description Checks that there are no warnings when type of m1 is in fact |
| /// a subtype of type of m2. Checks instance methods with optional parameters. |
| /// @author sgrekhov@unipro.ru |
| |
| class Whatever {} |
| class Super {} |
| class Sub extends Super {} |
| |
| class A { |
| num? f1(Super x, Sub y, [Super? a]) {} |
| int? f2(Super x, Sub y, [Sub? a]) {} |
| dynamic f3(Super x, {Sub? a}) {} |
| } |
| typedef AAlias = A; |
| |
| class C extends AAlias { |
| int? f1(Super x, [Super? a, Super? b]) {} |
| int? f2(Super x, [Sub? a, Super? b, Whatever? c]) {} |
| int? f3(Super x, {Super? a, Super? b}) {} |
| } |
| |
| main() { |
| new A(); |
| new C(); |
| } |