| // 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 is a mixin with opted-in class, |
| /// legacy method can accept [null] argument if corresponding parent method |
| /// argument 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 with OPTED_NULLABLE_ARGS { |
| void test_int(int i) { Expect.isNull(i); } |
| void test_object(Object o) { Expect.isNull(o); } |
| void test_function(Function f) { Expect.isNull(f); } |
| void test_dynamic(dynamic d) { Expect.isNull(d); } |
| void test_futureOr(FutureOr f) { Expect.isNull(f); } |
| void test_null(Null n) { Expect.isNull(n); } |
| } |
| |
| main() { |
| A a = A(); |
| a.test_int(null); |
| a.test_object(null); |
| a.test_dynamic(null); |
| a.test_function(null); |
| a.test_futureOr(null); |
| a.test_null(null); |
| } |