| /* |
| * 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 generic opted-in class is a mixin with generic |
| * legacy class with [FutureOr] type parameter, child opted-in class type |
| * parameter can extend [Null]. |
| * |
| * @Issue 39666 |
| * |
| * @author iarkh@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=non-nullable |
| |
| import "dart:async"; |
| import "../../Utils/expect.dart"; |
| import "override_checking_legacy_futureor_lib.dart"; |
| |
| class OptedFutureOr<T extends Null> extends LEGACY_CLASS_FUTUREOR<T> { |
| dynamic getParamType() => T; |
| } |
| |
| class OptedFutureOrInt<T extends Null> extends LEGACY_CLASS_FUTUREORINT<T> { |
| dynamic getParamType() => T; |
| } |
| |
| class OptedFutureOrFunction<T extends Null> extends LEGACY_CLASS_FUTUREORFUNCTION<T> { |
| dynamic getParamType() => T; |
| } |
| |
| class OptedFutureOrFutureOr<T extends Null> extends LEGACY_CLASS_FUTUREORFUTUREOR<T> { |
| dynamic getParamType() => T; |
| } |
| |
| main() { |
| Expect.equals(typeOf<Null>(), OptedFutureOr().getParamType()); |
| Expect.equals(typeOf<Null>(), OptedFutureOr<Null>().getParamType()); |
| |
| Expect.equals(typeOf<Null>(), OptedFutureOrInt().getParamType()); |
| Expect.equals(typeOf<Null>(), OptedFutureOrInt<Null>().getParamType()); |
| |
| Expect.equals(typeOf<Null>(), OptedFutureOrFunction().getParamType()); |
| Expect.equals(typeOf<Null>(), OptedFutureOrFunction<Null>().getParamType()); |
| |
| Expect.equals(typeOf<Null>(), OptedFutureOrFutureOr().getParamType()); |
| Expect.equals(typeOf<Null>(), OptedFutureOrFutureOr<Null>().getParamType()); |
| } |