JSTests/test262/test/built-ins/Object/defineProperty/15.2.3.6-4-255.js

// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
es5id: 15.2.3.6-4-255
description: >
    Object.defineProperty - 'O' is an Array, 'name' is an array index
    named property, 'name' is accessor property and 'desc' is accessor
    descriptor, and the [[Configurable]] attribute value of 'name' is
    false, test TypeError is thrown if the [[Get]] field of 'desc' is
    present, and the [[Get]] field of 'desc' and the [[Get]] attribute
    value of 'name' are two objects which refer to the different
    objects (15.4.5.1 step 4.c)
includes: [propertyHelper.js]
---*/

var arrObj = [];

function getFunc() {
  return 12;
}
Object.defineProperty(arrObj, "1", {
  get: getFunc
});

try {
  Object.defineProperty(arrObj, "1", {
    get: function() {
      return 14;
    }
  });

  $ERROR("Expected TypeError");
} catch (e) {
  assert(e instanceof TypeError);
  assert(arrObj.hasOwnProperty("1"));

  var desc = Object.getOwnPropertyDescriptor(arrObj, "1");

  assert(arrObj[1] === getFunc());

  assert(desc.hasOwnProperty("set") && typeof desc.set === "undefined");

  verifyNotEnumerable(arrObj, "1");
  verifyNotConfigurable(arrObj, "1");
}