diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/collections/Set-values-2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/collections/Set-values-2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,18 @@
+// set.keys() and set.values() return iterators over the elements
+// and set.entries() returns an iterator that yields pairs [e, e].
+
+load(libdir + "iteration.js");
+
+var data = [1, 2, 3, 4];
+var s = Set(data);
+
+var ki = s.keys();
+assertIteratorNext(ki, 1);
+assertIteratorNext(ki, 2);
+assertIteratorNext(ki, 3);
+assertIteratorNext(ki, 4);
+assertIteratorDone(ki, undefined);
+
+assertEq([...s.keys()].toSource(), data.toSource());
+assertEq([...s.values()].toSource(), data.toSource());
+assertEq([...s.entries()].toSource(), [[1, 1], [2, 2], [3, 3], [4, 4]].toSource());