| /* |
| * Any copyright is dedicated to the Public Domain. |
| * http://creativecommons.org/licenses/publicdomain/ |
| * Contributor: |
| * Jeff Walden <jwalden+code@mit.edu> |
| */ |
| |
| var gTestfile = 'preventExtensions-idempotent.js'; |
| //----------------------------------------------------------------------------- |
| var BUGNUMBER = 599459; |
| var summary = 'Object.preventExtensions should be idempotent'; |
| |
| print(BUGNUMBER + ": " + summary); |
| |
| /************** |
| * BEGIN TEST * |
| **************/ |
| |
| var obj = {}; |
| assertEq(Object.preventExtensions(obj), obj); |
| assertEq(Object.isExtensible(obj), false); |
| assertEq(Object.preventExtensions(obj), obj); |
| assertEq(Object.isExtensible(obj), false); |
| |
| /******************************************************************************/ |
| |
| if (typeof reportCompare === "function") |
| reportCompare(true, true); |
| |
| print("All tests passed!"); |