LibTest/collection/SplayTreeMap/SplayTreeMap_A02_t01.dart

/*
 * 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 SplayTreeMap([int compare(K key1, K key2),
 * bool isValidKey(potentialKey)])
 * ...
 * Keys of the map are compared using the compare function passed in the
 * constructor, both for ordering and for equality.
 * ...
 *  If the compare function is omitted, the objects are assumed to be Comparable,
 *  and are compared using their Comparable.compareTo method. Non-comparable
 *  objects (including null) will not work as keys in that case.
 * @description Checks that if compare function is not specified then key object
 * should implement comparable. If not exception is thrown
 * @author sgrekhov@unipro.ru
 */
import "dart:collection";
import "../../../Utils/expect.dart";

class C {
}

main() {
  SplayTreeMap map = new SplayTreeMap();

  map[new C()] = null;
  Expect.throws(() {map[new C()] = null;});
}