| // Copyright (c) 2013, 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<E> takeWhile(bool test(E value)) |
| /// ... |
| /// Every new [Iterator] of the returned [Iterable] starts iterating over |
| /// elements of [this]. |
| /// @description Checks that every new [Iterator] of the returned [Iterable] |
| /// iterates over all elements of [this]. |
| /// @author msyabro |
| |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| var count = 0; |
| bool test(int e) { |
| ++count; |
| return e < 3; |
| } |
| |
| var list = new Uint32List.fromList([1, 2, 3, 4, 5]); |
| var res = list.takeWhile(test); |
| Expect.equals(0, count); |
| res.elementAt(0); |
| Expect.equals(1, count); |
| |
| res.elementAt(0); |
| Expect.equals(2, count); |
| |
| var it = res.iterator; |
| it.moveNext(); |
| Expect.equals(3, count); |
| |
| it.moveNext(); |
| Expect.equals(4, count); |
| } |