| // 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 |
| |
| // Requirements=nnbd-weak |
| |
| import "../../../Utils/expect.dart"; |
| import "exports_A01_opted_out_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); |
| } |