| /* | |
| * 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 A type alias declares a name for a type expression. | |
| * <typeAlias> ::=<metadata> typedef <typeIdentifier> <typeParameters>?‘=’<type> | |
| * ‘;’ | |
| * | <metadata> typedef <functionTypeAlias> | |
| * <functionTypeAlias> ::= <functionPrefix> <formalParameterPart> ‘;’ | |
| * <functionPrefix> ::= <type>? <identifier> | |
| * @description Checks that type alias syntax works as expected. Test | |
| * non-function type alias with type parameters | |
| * @author sgrekhov@unipro.ru | |
| */ | |
| // SharedOptions=--enable-experiment=nonfunction-type-aliases | |
| import "../../../Utils/expect.dart"; | |
| class A {} | |
| class B extends A {} | |
| class D extends B {} | |
| class C<T extends A> { | |
| T t; | |
| } | |
| typedef CAlias<T extends B> = C<T>; | |
| main() { | |
| CAlias<D> ca = new CAlias<D>(); | |
| Expect.isTrue(ca is C<D>); | |
| Expect.isTrue(ca.t is D); | |
| } |