| /* |
| * 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. |
| */ |
| /** |
| * @assertion Iterable map(dynamic f(E e)) |
| * ... |
| * As long as the returned Iterable is not iterated over, the supplied function |
| * f will not be invoked. |
| * @description Checks that the supplied function f will not be invoked if |
| * the returned Iterable is not iterated over. |
| * @author kaigorodov |
| */ |
| library map_A02_t01; |
| import "../../../Utils/expect.dart"; |
| |
| bool invoked = false; |
| |
| f(var element) { |
| invoked = true; |
| return element; |
| } |
| |
| test(Iterable create([Iterable content])) { |
| Iterable a = create(); |
| a.map(f); |
| a = create([22]); |
| a.map(f); |
| a = create([22, 11]); |
| a.map(f); |
| a = create([22, 11, 11]); |
| a.map(f); |
| List l = new List.empty(growable: true); |
| for (int k = 1; k < 200; k++) { |
| l.add(k); |
| } |
| a.map(f); |
| Expect.isFalse(invoked); |
| } |