diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma_5/Object/15.2.3.4-02.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma_5/Object/15.2.3.4-02.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,52 @@
+/*
+ * 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!");