| // 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); |
| } |