js/src/tests/e4x/extensions/extensibility.js

   1 /*
   2  * Any copyright is dedicated to the Public Domain.
   3  * http://creativecommons.org/licenses/publicdomain/
   4  * Contributor:
   5  *   Jeff Walden <jwalden+code@mit.edu>
   6  */
   7
   8 var gTestfile = 'extensibility.js';
   9 //-----------------------------------------------------------------------------
  10 var BUGNUMBER = 492849;
  11 var summary = 'XML values cannot have their [[Extensible]] property changed';
  12
  13 print(BUGNUMBER + ": " + summary);
  14
  15 /**************
  16  * BEGIN TEST *
  17  **************/
  18
  19 var x = <foo/>;
  20
  21 assertEq(Object.isExtensible(x), true);
  22
  23 try
  24 {
  25   Object.preventExtensions(x);
  26   throw new Error("didn't throw");
  27 }
  28 catch (e)
  29 {
  30   assertEq(e instanceof TypeError, true,
  31            "xmlValue.[[Extensible]] cannot be changed");
  32 }
  33
  34 assertEq(Object.isExtensible(x), true);
  35
  36
  37 /******************************************************************************/
  38
  39 if (typeof reportCompare === "function")
  40   reportCompare(true, true);
  41
  42 print("All tests passed!");