The Tor Browser / file revision

 /*

  * Any copyright is dedicated to the Public Domain.

  * http://creativecommons.org/licenses/publicdomain/

  * Contributor:

  *   Jeff Walden <jwalden+code@mit.edu>

  */

 //-----------------------------------------------------------------------------

 var BUGNUMBER = 518663;

 var summary = 'Object.getOwnPropertyNames: array objects';

 print(BUGNUMBER + ": " + summary);

 /**************

  * BEGIN TEST *

  **************/

 var a, names, expected;

 function arraysEqual(a1, a2)

 {

   return a1.length === a2.length &&

          a1.every(function(v, i) { return v === a2[i]; });

 }

 a = [0, 1, 2];

 names = Object.getOwnPropertyNames(a).sort();

 expected = ["0", "1", "2", "length"].sort();

 a = [1, , , 7];

 a.p = 2;

 Object.defineProperty(a, "q", { value: 42, enumerable: false });

 names = Object.getOwnPropertyNames(a).sort();

 expected = ["0", "3", "p", "q", "length"].sort();

 assertEq(arraysEqual(names, expected), true);

 a = [];

 names = Object.getOwnPropertyNames(a).sort();

 expected = ["length"];

 assertEq(arraysEqual(names, expected), true);

 /******************************************************************************/

 reportCompare(true, true);

 print("All tests passed!");