LibTest/core/Map/putIfAbsent_A01_t06.test.dart

// 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.

// @dart = 2.9

/// @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 Tries to pass null as [ifAbsent] and checks that
/// an exception or error is thrown.
/// @author msyabro

library putIfAbsent_A01_t06;

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

test(Map create([Map content])) {
  Map map = create();

  Expect.throws(() {map.putIfAbsent("1", null);});
  Expect.isFalse(map.containsKey("1"));
}