| /* |
| * Copyright (c) 2016, 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 If f is marked sync*, then a fresh instance i implementing |
| * the built-in class Iterable is associated with the invocation and |
| * immediately returned. |
| * A Dart implementation will need to provide a specific implementation of |
| * Iterable that will be returned by sync* methods. A typical strategy would |
| * be to produce an instance of a subclass of class IterableBase defined in |
| * dart:core. The only method that needs to be added by the Dart |
| * implementation in that case is iterator. |
| * |
| * @description Check that a fresh instance of Iterable is returned to the |
| * caller of sync generator. |
| * |
| * @author a.semenov@unipro.ru |
| */ |
| |
| import '../../../Utils/expect.dart'; |
| |
| Iterable test() sync* { |
| yield 1; |
| } |
| |
| main() { |
| Set history = new Set.identity(); |
| for (var i = 0; i < 10; i++) { |
| Iterable s = test(); |
| Expect.isFalse(history.contains(s)); |
| history.add(s); |
| } |
| } |