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 = 'preventExtensions-idempotent.js';
michael@0: //-----------------------------------------------------------------------------
michael@0: var BUGNUMBER = 599459;
michael@0: var summary = 'Object.preventExtensions should be idempotent';
michael@0: 
michael@0: print(BUGNUMBER + ": " + summary);
michael@0: 
michael@0: /**************
michael@0:  * BEGIN TEST *
michael@0:  **************/
michael@0: 
michael@0: var obj = {};
michael@0: assertEq(Object.preventExtensions(obj), obj);
michael@0: assertEq(Object.isExtensible(obj), false);
michael@0: assertEq(Object.preventExtensions(obj), obj);
michael@0: assertEq(Object.isExtensible(obj), false);
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: if (typeof reportCompare === "function")
michael@0:   reportCompare(true, true);
michael@0: 
michael@0: print("All tests passed!");