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  * Basic checks for Object.seal and Object.freeze.
  26  *
  27  * @test
  28  * @run
  29  */
  30 
  31 var obj = { num: Math.E };
  32 
  33 print("sealed? " + Object.isSealed(obj));
  34 print("frozen? " + Object.isFrozen(obj));
  35 
  36 Object.seal(obj);
  37 print("sealed? " + Object.isSealed(obj));
  38 
  39 // delete should fail - because we have sealed
  40 print("deleted num? " + (delete obj.num));
  41 print("num = " + obj.num);
  42 
  43 // assignment should succeed
  44 print("assign PI to num");
  45 obj.num = Math.PI;
  46 print("num = " + obj.num);
  47 
  48 // assignment should fail -- because we freeze
  49 Object.freeze(obj);
  50 print("frozen? " + Object.isFrozen(obj));
  51 
  52 print("assign 1729 to num");
  53 obj.num = 1729;
  54 print("num = " + obj.num);
  55