diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/collections/Set-surfaces-1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/collections/Set-surfaces-1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,48 @@
+// Set surfaces
+
+load(libdir + "iteration.js");
+
+var desc = Object.getOwnPropertyDescriptor(this, "Set");
+assertEq(desc.enumerable, false);
+assertEq(desc.configurable, true);
+assertEq(desc.writable, true);
+
+assertEq(typeof Set, 'function');
+assertEq(Object.keys(Set).length, 0);
+assertEq(Set.length, 0);
+assertEq(Set.name, "Set");
+
+assertEq(Object.getPrototypeOf(Set.prototype), Object.prototype);
+assertEq(Object.prototype.toString.call(Set.prototype), "[object Set]");
+assertEq(Object.prototype.toString.call(new Set), "[object Set]");
+assertEq(Object.prototype.toString.call(Set()), "[object Set]");
+assertEq(Object.keys(Set.prototype).join(), "");
+assertEq(Set.prototype.constructor, Set);
+
+function checkMethod(name, arity) { 
+    var desc = Object.getOwnPropertyDescriptor(Set.prototype, name);
+    assertEq(desc.enumerable, false);
+    assertEq(desc.configurable, true);
+    assertEq(desc.writable, true);
+    assertEq(typeof desc.value, 'function');
+    assertEq(desc.value.name, name);
+    assertEq(desc.value.length, arity);
+}
+
+checkMethod("has", 1);
+checkMethod("add", 1);
+checkMethod("delete", 1);
+checkMethod("values", 0);
+checkMethod("entries", 0);
+
+var desc = Object.getOwnPropertyDescriptor(Set.prototype, "size");
+assertEq(desc.enumerable, false);
+assertEq(desc.configurable, true);
+assertEq(typeof desc.get, 'function');
+assertEq(desc.get.length, 0);
+assertEq(desc.set, undefined);
+checkMethod("clear", 0);
+
+// Set.prototype.keys, .values, and .iterator are the same function object
+assertEq(Set.prototype.keys, Set.prototype.values);
+assertEq(Set.prototype[std_iterator], Set.prototype.values);