|  | // Copyright (c) 2012, 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. | 
|  |  | 
|  | import "package:expect/expect.dart"; | 
|  |  | 
|  | class Foo { | 
|  | var x; | 
|  | var y; | 
|  | var z; | 
|  | var v; | 
|  | Foo() | 
|  | : x = {}, | 
|  | y = <String, int>{}, | 
|  | z = const {}, | 
|  | v = const <String, int>{}; | 
|  | } | 
|  |  | 
|  | main() { | 
|  | Expect.equals("{}", new Foo().x.toString()); | 
|  | Expect.equals("{}", new Foo().y.toString()); | 
|  | Expect.equals("{}", new Foo().z.toString()); | 
|  | Expect.equals("{}", new Foo().v.toString()); | 
|  | } |