JDK-8024120.js revision 536:b5ff11e00050 
1/*
2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/**
25 * JDK-8024120: Setting __proto__ to null removes the __proto__ property
26 *
27 * @test
28 * @run
29 */
30
31var obj = {};
32
33obj.__proto__ = null;
34
35if (obj.__proto__ !== null || typeof(obj.__proto__) != 'object') {
36    fail("obj.__proto__ is expected to be null");
37}
38
39var p = Object.getPrototypeOf(obj);
40if (p !== null || typeof(p) != 'object') {
41    fail("Object.getPrototypeOf(obj) is expected to be null");
42}
43