| // Copyright (c) 2020, 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 In an unmigrated library, override checking is done using legacy |
| /// types. This means that an unmigrated library can bring together otherwise |
| /// incompatible methods. When choosing the most specific signature during |
| /// interface computation, all nullability and requiredness annotations are |
| /// ignored, and the [Never] type is treated as [Null]. |
| /// |
| /// @description Check that if legacy class extends legacy class and implements |
| /// opted-in class, legacy setter can accept [null] values if corresponding |
| /// parent setter is of nullable type. |
| /// |
| /// @author iarkh@unipro.ru |
| |
| // Requirements=nnbd-weak |
| // @dart=2.6 |
| |
| import "dart:async"; |
| import "../../../../Utils/expect.dart"; |
| import "override_checking_A01_opted_in_lib.dart"; |
| |
| class A extends B implements OPTED_NULLABLE_SETTER {} |
| |
| class B { |
| void set setInt (int i) { Expect.isNull(i); } |
| void set setObject (Object o) { Expect.isNull(o); } |
| void set setFunction(Function f) { Expect.isNull(f); } |
| void set setFutureOr(FutureOr i) { Expect.isNull(i); } |
| void set setDynamic (dynamic d) { Expect.isNull(d); } |
| void set setNull (Null n) { Expect.isNull(n); } |
| } |
| |
| main() { |
| A a = A(); |
| |
| a.setInt = null; |
| a.setObject = null; |
| a.setFutureOr = null; |
| a.setFunction = null; |
| a.setDynamic = null; |
| a.setNull = null; |
| } |