| /* |
| * 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 In a migrated library, override checking must check that an |
| * override is consistent with all overridden methods from other migrated |
| * libraries in the super-interface chain, since a legacy library is permitted |
| * to override otherwise incompatible signatures for a method. |
| * |
| * @description Check that if opted-in class is a mixin with legacy class, child |
| * opted-in method return value can jave non-nullable type. |
| * |
| * @author iarkh@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=non-nullable |
| |
| import "dart:async"; |
| import "../../Utils/expect.dart"; |
| import "override_checking_legacy_lib.dart"; |
| |
| void testme() {} |
| |
| class A with LEGACY_RETURN { |
| int getInt() => 1; |
| Object getObject() => 1; |
| Function getFunction() => testme; |
| FutureOr<int> getFutureOrInt() => 1; |
| FutureOr<Function> getFutureOrFunction() => testme; |
| } |
| |
| main() { |
| A a = A(); |
| Expect.equals(1, a.getInt()); |
| Expect.equals(1, a.getObject()); |
| Expect.equals(testme, a.getFunction()); |
| Expect.equals(1, a.getFutureOrInt()); |
| Expect.equals(testme, a.getFutureOrFunction()); |
| } |