| /* |
| * Copyright (c) 2016, 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 SplayTreeSet.from(Iterable elements, [int compare(E key1, E key2), |
| * bool isValidKey(potentialKey)]) |
| * ... |
| * The set works as if created by new SplayTreeSet<E>(compare, isValidKey). |
| * @description Checks that if the isValidKey function returns false for an |
| * object, it is assumed to not be in the set |
| * @author sgrekhov@unipro.ru |
| */ |
| import "dart:collection"; |
| import "../../../Utils/expect.dart"; |
| |
| bool isValidKey(potentialKey) { |
| return potentialKey is String; |
| } |
| |
| int compare(var key1, var key2) { |
| return 1; |
| } |
| |
| main() { |
| SplayTreeSet set = new SplayTreeSet.from([3], compare, isValidKey); |
| |
| Expect.equals(1, set.length); |
| Expect.isFalse(set.contains(3)); |
| Expect.isNull(set.lookup(3)); |
| Expect.isFalse(set.remove(3)); |
| set.removeAll([1, 3]); |
| Expect.equals(1, set.length); |
| |
| set.retainAll([1, 2, 3]); |
| Expect.equals(0, set.length); |
| } |