| /* |
| * 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 nullable type alias exported from opted-in library |
| * to legacy library and then back to the opted in code, its variable can be |
| * assigned to [null]. |
| * @author iarkh@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=non-nullable,nonfunction-type-aliases |
| // Requirements=nnbd-strong |
| |
| import "../../Utils/expect.dart"; |
| import "exports_A01_legacy_aliases_lib.dart"; |
| |
| main() { |
| NullableAAlias a = null; |
| NullableIntAlias i = null; |
| NullableFunctionAlias f = null; |
| NullableObjectAlias o = null; |
| DynamicAlias d = null; |
| NullAlias n = null; |
| FutureOrAlias x = null; |
| FutureOrFutureOrAlias y = null; |
| |
| Expect.isNull(a); |
| Expect.isNull(i); |
| Expect.isNull(f); |
| Expect.isNull(o); |
| Expect.isNull(d); |
| Expect.isNull(x); |
| Expect.isNull(y); |
| Expect.isNull(n); |
| } |