| /* |
| * 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 All opted-in libraries upstream from the legacy library are |
| * viewed by the legacy library with nullability related features erased from |
| * their APIs. In particular: |
| * - All types of the form T? in the opted-in API are treated as T. |
| * - All required named parameters are treated as optional named parameters. |
| * - The type Never is treated as the type Null |
| * |
| * @description Check that all types of the form T? in the opted-in API are |
| * treated as T |
| * @author sgrekhov@unipro.ru |
| */ |
| // @dart=2.4 |
| // SharedOptions=--enable-experiment=non-nullable |
| import "../../Utils/expect.dart"; |
| import "opted_in_lib.dart"; |
| |
| main() { |
| Expect.isTrue(aVar2 is A); |
| Expect.isTrue(cVar2 is C<A>); |
| Expect.isTrue(sVar2 is String); |
| Expect.isTrue(iVar2 is int); |
| aVar2 = null; |
| cVar2 = null; |
| sVar2 = null; |
| iVar2 = null; |
| } |
