diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_7/geniter/builtin-Iterator-function.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_7/geniter/builtin-Iterator-function.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,89 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER     = "(none)";
+var summary = "Iterator() test";
+var actual, expect;
+
+printBugNumber(BUGNUMBER);
+printStatus(summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+var failed = false;
+
+function Array_equals(a, b)
+{
+  if (!(a instanceof Array) || !(b instanceof Array))
+    throw new Error("Arguments not both of type Array");
+  if (a.length != b.length)
+    return false;
+  for (var i = 0, sz = a.length; i < sz; i++)
+    if (a[i] !== b[i])
+      return false;
+  return true;
+}
+
+var meow = "meow", oink = "oink", baa = "baa";
+
+var it = Iterator([meow, oink, baa]);
+var it2 = Iterator([meow, oink, baa], true);
+
+try
+{
+  if (!Array_equals(it.next(), [0, meow]))
+    throw [0, meow];
+  if (!Array_equals(it.next(), [1, oink]))
+    throw [1, oink];
+  if (!Array_equals(it.next(), [2, baa]))
+    throw [2, baa];
+
+  var stopPassed = false;
+  try
+  {
+    it.next();
+  }
+  catch (e)
+  {
+    if (e === StopIteration)
+      stopPassed = true;
+  }
+
+  if (!stopPassed)
+    throw "it: missing or incorrect StopIteration";
+
+  if (it2.next() != 0)
+    throw "wanted key=0";
+  if (it2.next() != 1)
+    throw "wanted key=1";
+  if (it2.next() != 2)
+    throw "wanted key=2";
+
+  var stopPassed = false;
+  try
+  {
+    it2.next();
+  }
+  catch (e)
+  {
+    if (e === StopIteration)
+      stopPassed = true;
+  }
+
+  if (!stopPassed)
+    throw "it2: missing or incorrect StopIteration";
+}
+catch (e)
+{
+  failed = e;
+}
+
+expect = false;
+actual = failed;
+
+reportCompare(expect, actual, summary);