|  | // Copyright (c) 2011, 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. | 
|  | // Dart test program testing top-level variables. | 
|  |  | 
|  | import "package:expect/expect.dart"; | 
|  |  | 
|  | var a, b; | 
|  |  | 
|  | class TopLevelVarTest { | 
|  | static testMain() { | 
|  | Expect.equals(null, a); | 
|  | Expect.equals(null, b); | 
|  | a = b = 100; | 
|  | b++; | 
|  | Expect.equals(100, a); | 
|  | Expect.equals(101, b); | 
|  |  | 
|  | Expect.equals(111, x); | 
|  | Expect.equals(112, y); | 
|  | } | 
|  | } | 
|  |  | 
|  | // Ensure that initializers work for both const and non-const variables. | 
|  | const int x = 2 * 55 + 1; | 
|  | int y = x + 1; | 
|  |  | 
|  | main() { | 
|  | TopLevelVarTest.testMain(); | 
|  | } |