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// 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.fromIterables(Iterable<K> keys, Iterable<V> values,
/// [int compare(K key1, K key2), bool isValidKey(potentialKey)])
/// @description Checks that if [isValidKey] function is supplied and returns
/// [false] then element is assumed not to be in a map
/// @author
import "dart:collection";
import "../../../Utils/expect.dart";
class C {
int value;
int compare(var key1, var key2) {
return key1.value - key2.value;
bool isValidKey(var potentialKey) => potentialKey.value != 3;
main() {
C c1 = new C(1);
C c2 = new C(2);
C c3 = new C(3);
Iterable<C> keys = [c1, c2, c3];
Iterable values = [1, 2, 3];
SplayTreeMap map = new SplayTreeMap.fromIterables(keys, values, compare,
Expect.equals(3, map.length);