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 
  31 var obj = {};
  32 
  33 obj.__proto__ = null;
  34 
  35 if (obj.__proto__ !== null || typeof(obj.__proto__) != 'object') {
  36     fail("obj.__proto__ is expected to be null");
  37 }
  38 
  39 var p = Object.getPrototypeOf(obj);
  40 if (p !== null || typeof(p) != 'object') {
  41     fail("Object.getPrototypeOf(obj) is expected to be null");
  42 }