| /* |
| * 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 |
| * typeParameter ::= metadata identifier (extends typeNotVoid)? |
| * typeParameters ::= ‘<’ typeParameter (‘,’ typeParameter)* ‘>’ |
| * ... |
| * Type parameters are declared in the type parameter scope of a class or |
| * function. ... The type parameters of a generic class declaration [G] are also |
| * in scope in the [extends] and [implements] clauses of [G] (if these exist) |
| * and in the body of [G]. |
| * @description Checks that class type parameter is in the scope of its |
| * [implements] clause. |
| * @author iarkh@unipro.ru |
| */ |
| import "../../Utils/expect.dart"; |
| |
| class A {} |
| class B extends A {} |
| class C<X> {} |
| |
| class D<X extends A> implements C<X> {} |
| |
| main() { |
| Expect.isTrue(D() is C); |
| Expect.isTrue(D() is C<A>); |
| Expect.isFalse(D() is C<B>); |
| |
| Expect.isTrue(D<A>() is C); |
| Expect.isTrue(D<A>() is C<A>); |
| Expect.isFalse(D<A>() is C<B>); |
| |
| Expect.isTrue(D<B>() is C); |
| Expect.isTrue(D<B>() is C<A>); |
| Expect.isTrue(D<B>() is C<B>); |
| } |