| /* |
| * 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 implements opted-in class, legacy |
| * method can accept [null] argument if corresponding parent method argument is |
| * of nullable type. |
| * |
| * @author iarkh@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=non-nullable |
| // @dart=2.6 |
| |
| import "dart:async"; |
| import "../../Utils/expect.dart"; |
| import "override_checking_A01_opted_in_lib.dart"; |
| |
| class A implements 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); |
| } |