diff --git a/js/src/jit-test/tests/self-hosting/self-hosted-class.js b/js/src/jit-test/tests/self-hosting/self-hosted-class.js
new file mode 100644
index 000000000000..fca979c02a67
--- /dev/null
+++ b/js/src/jit-test/tests/self-hosting/self-hosted-class.js
@@ -0,0 +1,37 @@
+var NewClassPrototype = getSelfHostedValue("NewClassPrototype");
+var NewObjectWithClassPrototype = getSelfHostedValue("NewObjectWithClassPrototype");
+var HaveSameClass = getSelfHostedValue("HaveSameClass");
+var UnsafeGetReservedSlot = getSelfHostedValue("UnsafeGetReservedSlot");
+var UnsafeSetReservedSlot = getSelfHostedValue("UnsafeSetReservedSlot");
+
+var numSlots = 5;
+var C = NewClassPrototype(numSlots);
+
+C.getSlots = function getSlots() {
+  if (!HaveSameClass(this, C))
+    throw TypeError("bad class");
+  var slots = [];
+  for (var i = 0; i < numSlots; i++)
+    slots.push(UnsafeGetReservedSlot(this, i));
+  return slots;
+};
+
+C.setSlots = function setSlots(slots) {
+  if (!HaveSameClass(this, C))
+    throw TypeError("bad class");
+  for (var i = 0; i < numSlots; i++)
+    UnsafeSetReservedSlot(this, i, slots[i]);
+};
+
+function f() {
+  var obj = NewObjectWithClassPrototype(C);
+  var before = ["foo", 2.22, ["bar", "baz"], { x: 0, y: -1.1 }, false];
+  obj.setSlots(before);
+  var after = obj.getSlots();
+
+  assertEq(before.length, after.length);
+  for (var i = 0; i < before.length; i++)
+    assertEq(before[i], after[i]);
+}
+
+f();