diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/collections/iterator-1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/collections/iterator-1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,14 @@
+// collection.iterator() returns an Iterator object.
+
+load(libdir + "iteration.js");
+
+function test(obj, name) {
+    var iter = obj[std_iterator]();
+    assertEq(typeof iter, "object");
+    assertEq(iter instanceof Iterator, true);
+    assertEq(iter.toString(), "[object " + obj.constructor.name + " Iterator]");
+}
+
+test([]);
+test(new Map);
+test(new Set);