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// Copyright (c) 2011, 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 abstract V putIfAbsent(K key, V ifAbsent())
/// If [key] is not associated to a value, calls [ifAbsent] and
/// updates the map by mapping [key] to the value returned by [ifAbsent].
/// Returns the value in the map.
/// @description Checks that the new mapping added only if the key is not present
/// in the map. Checks the returned value.
/// @author msyabro
library putIfAbsent_A01_t01;
import "../../../Utils/expect.dart";
test(Map create([Map content])) {
Map map = create();
int i = 1;
Object putIfAbsent() {
return i;
Expect.isTrue(map.putIfAbsent("1", putIfAbsent) == 1);
Expect.isTrue(map["1"] == 1);
i = 2;
Expect.isTrue( map.putIfAbsent("1", putIfAbsent) == 1);
Expect.isTrue(map["1"] == 1);