blob: 961406f7717983ff95b3e4332c1fb7f1da1990ed [file] [log] [blame]
// 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 compare function is omitted, it defaults to
/// @author
import "dart:collection";
import "../../../Utils/expect.dart";
class C implements Comparable {
int value;
compareTo(dynamic other) {
return this.value - (other as C).value;
main() {
C c1 = new C(2);
C c2 = new C(1);
C c3 = new C(-1);
C c4 = new C(1);
SplayTreeSet set = new SplayTreeSet.from([c1, c2, c3, c4]);
Expect.equals(3, set.length);
Expect.equals(c3, set.elementAt(0));
Expect.equals(c2, set.elementAt(1));
Expect.equals(c1, set.elementAt(2));