text: // Copyright (c) 2012 Ecma International.  All rights reserved.
  // Ecma International makes this code available under the terms and conditions set
  // forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
  // "Use Terms").   Any redistribution of this code must retain the above
  // copyright and this notice and otherwise comply with the Use Terms.
  
  /*---
  es5id: 15.2.3.6-4-429
  description: >
      ES5 Attributes - success to update [[Configurable]] attribute of
      accessor property ([[Get]] is undefined, [[Set]] is undefined,
      [[Enumerable]] is true, [[Configurable]] is true) to different
      value
  includes: [propertyHelper.js]
  ---*/
  
  var obj = {};
  
  Object.defineProperty(obj, "prop", {
      get: undefined,
      set: undefined,
      enumerable: true,
      configurable: true
  });
  var desc1 = Object.getOwnPropertyDescriptor(obj, "prop");
  
  Object.defineProperty(obj, "prop", {
      configurable: false
  });
  var desc2 = Object.getOwnPropertyDescriptor(obj, "prop");
  
  verifyNotConfigurable(obj, "prop");
  assert.sameValue(desc1.configurable, true);
  assert.sameValue(desc2.configurable, false);
  assert(obj.hasOwnProperty("prop"));
  