LanguageFeatures/nnbd/weak/type_reification_A01_t06.dart

// 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 types reified in legacy libraries are reified as legacy types.
/// @description Check that runtime type of the object of the class imported from
/// opted to legacy library can be casted correctly in opted-in code.
/// @author iarkh@unipro.ru

// Requirements=nnbd-weak
import '../../../Utils/expect.dart';
import 'type_reification_legacy_aliases_lib.dart';

typedef AliasA = A;

main() {
  Object? a1 = A1() as Object;
  var a2 = a1 as AliasA;
  A1 a3 = a2 as A1;
  Expect.throws(() { a2 as B; });
  Expect.throws(() { B() as AliasA; });
}