| // 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 abstract int lastIndexOf(E element, [int start]) |
| /// There is no restriction on the value of [start]. |
| /// If it is negative, it has the same effect as if it were zero: -1 is returned. |
| /// If it is greater than the [:length:] of this list, it has the same effect |
| /// as if it were equal to the [:length:]: this entire list may be searched. |
| /// @note undocumented |
| /// @description Checks that [startIndex] can be out of bounds |
| /// @author iefremov |
| /// @author varlax |
| |
| library lastIndexOf_A03_t01; |
| |
| import "../../../Utils/expect.dart"; |
| |
| checkList(List list, var elem, int idx, int expected) { |
| Expect.equals(expected, list.lastIndexOf(elem, idx)); |
| } |
| |
| check(List a) { |
| checkList(a, 42, -1, -1); |
| checkList(a, 777, -1, -1); |
| checkList(a, null, -1, -1); |
| checkList(a, 0, -1, -1); |
| |
| checkList(a, 42, 7, 3); |
| checkList(a, 777, 7, -1); |
| checkList(a, null, 7, -1); |
| checkList(a, 0, 7, 6); |
| |
| checkList(a, 42, 6031769, 3); |
| checkList(a, 777, 6031769, -1); |
| checkList(a, null, 6031769, -1); |
| checkList(a, 0, 6031769, 6); |
| |
| checkList(a, 42, -6031769, -1); |
| checkList(a, 777, -6031769, -1); |
| checkList(a, null, -6031769, -1); |
| checkList(a, 0, -6031769, -1); |
| } |
| |
| test(List<E> create<E>([int length, E fill])) { |
| List a = create(); |
| a.addAll(const [42, 0, -1, 42, -1, 6031769, 0]); |
| check(a); |
| |
| List b = create(a.length, 0); |
| b.setRange(0, a.length, a); |
| check(b); |
| } |