|  | // Copyright (c) 2014, 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. | 
|  | // Test that instanceof works correctly with type variables. | 
|  |  | 
|  | import "package:expect/expect.dart"; | 
|  |  | 
|  | class A { | 
|  | } | 
|  |  | 
|  | class B<T, S> { | 
|  | } | 
|  |  | 
|  | class C<U, V> extends A with B<V, U> {} | 
|  |  | 
|  | class D<T> { | 
|  | foo(x) { | 
|  | // Avoid inlining. | 
|  | if (new DateTime.now().millisecondsSinceEpoch == 42) foo(x); | 
|  | return x is T; | 
|  | return true;  // Avoid inlining. | 
|  | } | 
|  | } | 
|  |  | 
|  | main() { | 
|  | Expect.isTrue(new D<B<int, bool>>().foo(new C<bool, int>())); | 
|  | } |