| /* |
| * 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<E> skipWhile(bool test(E value)) |
| * The returned iterable provides elements by iterating this iterable, but |
| * skipping over all initial elements where [test(element)] returns [true]. If |
| * all elements satisfy [test] the resulting iterable is empty, otherwise it |
| * iterates the remaining elements in their original order, starting with the |
| * first element for which [test(element)] returns [false]. |
| * @description Checks that once an element does not satisfy the [test], |
| * the iterator stops testing and uses every element unconditionally. |
| * @author kaigorodov |
| */ |
| |
| import "dart:collection"; |
| import "../../../Utils/expect.dart"; |
| |
| void check(List a0, bool test0(var element)) { |
| DoubleLinkedQueue queue = new DoubleLinkedQueue.from(a0); |
| bool testPassed = null; |
| bool test(var element) { |
| Expect.isTrue(testPassed == null || testPassed, |
| "testPassed=$testPassed for element=$element"); |
| return testPassed =! test0(element); |
| } |
| for (var element in queue.skipWhile(test)) { |
| Expect.isTrue(testPassed == null || !testPassed); |
| } |
| } |
| |
| main() { |
| List a0 = [1, 3, 7, 4, 5, 6]; |
| check(a0, (var element) => element == 1); |
| check(a0, (var element) => true); |
| check(a0, (var element) => false); |
| check(a0, (var element) => element > 4); |
| check(a0, (var element) => element < 4); |
| check(a0, (var element) => element == 4); |
| } |