LibTest/collection/SplayTreeMap/SplayTreeMap_class_A06_t01.dart

// Copyright (c) 2017, 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 SplayTreeMap([int compare(K key1, K key2),
/// bool isValidKey(potentialKey)])
/// If omitted, the [isValidKey] function defaults to testing if the value is a
/// [K].
/// @description Checks that [isValidKey] defaults to test that the [key] is a
/// [K] object
/// @author iarkh@unipro.ru

import "dart:collection";
import "../../../Utils/expect.dart";

class C {
  int value;
  C(this.value);
}

int compare(C key1, C key2) {
  return key1.value - key2.value;
}

main() {
  SplayTreeMap<C, Object> map = new SplayTreeMap<C, Object>(compare);
  C c1 = new C(1);
  C c2 = new C(2);
  C c3 = new C(3);

  map[c1] = 1;
  map[c2] = 2;
  map[c3] = 3;

  Expect.isNull(map["12345"]);
  Expect.isFalse(map.containsKey(12));
  Expect.isNull(map.remove(new Object()));
}