| // Copyright (c) 2017, 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 the |
| /// elements of this. |
| /// @description Checks that every new iterator of the returned iterable starts |
| /// iterating over the elements of this. |
| /// @author ngl@unipro.ru |
| |
| |
| import "dart:typed_data"; |
| import "../../../Utils/expect.dart"; |
| |
| Float64x2 f64x2(v) => new Float64x2.splat(v); |
| |
| main() { |
| List<Float64x2> list = [ |
| f64x2(1.0), f64x2(2.0), f64x2(3.0), f64x2(4.0), f64x2(5.0), f64x2(6.0) |
| ]; |
| var l = new Float64x2List.fromList(list); |
| var counter = 0; |
| bool test(e) { |
| counter++; |
| return e.x < 4.0; |
| } |
| var res = l.takeWhile(test); |
| |
| Expect.equals(0, counter); |
| res.elementAt(0); |
| Expect.equals(1, counter); |
| res.elementAt(0); |
| Expect.equals(2, counter); |
| |
| var it = res.iterator; |
| it.moveNext(); |
| Expect.equals(3, counter); |
| it.moveNext(); |
| Expect.equals(4, counter); |
| it.moveNext(); |
| Expect.equals(5, counter); |
| it.moveNext(); |
| Expect.equals(6, counter); |
| it.moveNext(); |
| Expect.equals(6, counter); |
| } |