| // 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([int compare(E key1, E key2), |
| /// bool isValidKey(potentialKey)]) |
| /// ... |
| /// If the isValidKey function returns false for an object, it is assumed to not |
| /// be in the set. |
| /// @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(compare, isValidKey); |
| set.add(3); |
| |
| 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); |
| } |