| /* |
| * 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 K firstKey() |
| * Get the first key in the map. |
| * @description Checks that the first key in a map is returned |
| * @author sgrekhov@unipro.ru |
| */ |
| import "dart:collection"; |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| SplayTreeMap map = new SplayTreeMap.from({1: 0, 2: "2", 3: null}); |
| Expect.equals(1, map.firstKey()); |
| |
| map.remove(1); |
| Expect.equals(2, map.firstKey()); |
| |
| map = new SplayTreeMap.from({3: 0, 2: "2", 1: null}); |
| Expect.equals(1, map.firstKey()); |
| |
| map.remove(1); |
| Expect.equals(2, map.firstKey()); |
| |
| map.remove(2); |
| Expect.equals(3, map.firstKey()); |
| } |