| // 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 If an unmigrated library re-exports a migrated library, the |
| /// re-exported symbols retain their migrated status (that is, downstream |
| /// migrated libraries will see their migrated types). |
| /// @description Check that if function which returns nullable is exported from |
| /// opted-in library to legacy library and then back to the opted in code, it |
| /// retains its status and so can return [null]. |
| /// @author iarkh@unipro.ru |
| |
| // Requirements=nnbd-weak |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| import "exports_A01_opted_out_lib.dart"; |
| |
| main() { |
| Expect.isTrue(getNullableInt is int? Function()); |
| Expect.isNull(getNullableInt()); |
| |
| Expect.isTrue(getNullableObject is Object? Function()); |
| Expect.isNull(getNullableObject()); |
| |
| Expect.isTrue(getDynamic is dynamic Function()); |
| Expect.isNull(getDynamic()); |
| |
| Expect.isTrue(getNullableFunction is Function? Function()); |
| Expect.isNull(getNullableFunction()); |
| |
| Expect.isTrue(getNull is Null Function()); |
| Expect.isNull(getNull()); |
| |
| Expect.isTrue(getFutureOr is FutureOr Function()); |
| Expect.isNull(getFutureOr()); |
| } |