| // Copyright (c) 2018, 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 = 2.9 | 
 |  | 
 | // Test relative order of key and value evaluation. | 
 |  | 
 | library map_literal12_test; | 
 |  | 
 | import "package:expect/expect.dart"; | 
 |  | 
 | int x = 0; | 
 | void main() { | 
 |   var map1 = {++x: ++x}; | 
 |   Expect.equals('{1: 2}', map1.toString()); | 
 |  | 
 |   var map2 = {++x: ++x, ++x: ++x}; | 
 |   Expect.equals('{3: 4, 5: 6}', map2.toString()); | 
 | } |