michael@0: /*
michael@0:  * Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/licenses/publicdomain/
michael@0:  * Contributor:
michael@0:  *   Jeff Walden <jwalden+code@mit.edu>
michael@0:  */
michael@0: 
michael@0: var gTestfile = '15.2.3.10-01.js';
michael@0: //-----------------------------------------------------------------------------
michael@0: var BUGNUMBER = 492849;
michael@0: var summary = 'ES5: Implement Object.preventExtensions, Object.isExtensible';
michael@0: 
michael@0: print(BUGNUMBER + ": " + summary);
michael@0: 
michael@0: /**************
michael@0:  * BEGIN TEST *
michael@0:  **************/
michael@0: 
michael@0: function trySetProperty(o, p, v, strict)
michael@0: {
michael@0:   function strictSetProperty()
michael@0:   {
michael@0:     "use strict";
michael@0:     o[p] = v;
michael@0:   }
michael@0: 
michael@0:   function setProperty()
michael@0:   {
michael@0:     o[p] = v;
michael@0:   }
michael@0: 
michael@0:   assertEq(Object.prototype.hasOwnProperty.call(o, p), false);
michael@0: 
michael@0:   try
michael@0:   {
michael@0:     if (strict)
michael@0:       strictSetProperty();
michael@0:     else
michael@0:       setProperty();
michael@0:     if (o[p] === v)
michael@0:       return "set";
michael@0:     if (p in o)
michael@0:       return "set-converted";
michael@0:     return "swallowed";
michael@0:   }
michael@0:   catch (e)
michael@0:   {
michael@0:     return "throw";
michael@0:   }
michael@0: }
michael@0: 
michael@0: function tryDefineProperty(o, p, v)
michael@0: {
michael@0:   assertEq(Object.prototype.hasOwnProperty.call(o, p), false);
michael@0: 
michael@0:   try
michael@0:   {
michael@0:     Object.defineProperty(o, p, { value: v });
michael@0:     if (o[p] === v)
michael@0:       return "set";
michael@0:     if (p in o)
michael@0:       return "set-converted";
michael@0:     return "swallowed";
michael@0:   }
michael@0:   catch (e)
michael@0:   {
michael@0:     return "throw";
michael@0:   }
michael@0: }
michael@0: 
michael@0: assertEq(typeof Object.preventExtensions, "function");
michael@0: assertEq(Object.preventExtensions.length, 1);
michael@0: 
michael@0: var slowArray = [1, 2, 3];
michael@0: slowArray.slow = 5;
michael@0: var objs =
michael@0:   [{}, { 1: 2 }, { a: 3 }, [], [1], [, 1], slowArray, function a(){}, /a/];
michael@0: 
michael@0: for (var i = 0, sz = objs.length; i < sz; i++)
michael@0: {
michael@0:   var o = objs[i];
michael@0:   assertEq(Object.isExtensible(o), true, "object " + i + " not extensible?");
michael@0: 
michael@0:   var o2 = Object.preventExtensions(o);
michael@0:   assertEq(o, o2);
michael@0: 
michael@0:   assertEq(Object.isExtensible(o), false, "object " + i + " is extensible?");
michael@0: 
michael@0:   assertEq(trySetProperty(o, "baz", 17, true), "throw",
michael@0:            "unexpected behavior for strict-mode property-addition to " +
michael@0:            "object " + i);
michael@0:   assertEq(trySetProperty(o, "baz", 17, false), "swallowed",
michael@0:            "unexpected behavior for property-addition to object " + i);
michael@0: 
michael@0:   assertEq(tryDefineProperty(o, "baz", 17), "throw",
michael@0:            "unexpected behavior for new property definition on object " + i);
michael@0: }
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: reportCompare(true, true);
michael@0: 
michael@0: print("All tests passed!");