diff -r 000000000000 -r 6474c204b198 js/src/jsapi-tests/testStructuredClone.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jsapi-tests/testStructuredClone.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,80 @@
+/* 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/. */
+
+#include "js/StructuredClone.h"
+
+#include "jsapi-tests/tests.h"
+
+BEGIN_TEST(testStructuredClone_object)
+{
+    JS::RootedObject g1(cx, createGlobal());
+    JS::RootedObject g2(cx, createGlobal());
+    CHECK(g1);
+    CHECK(g2);
+
+    JS::RootedValue v1(cx);
+
+    {
+        JSAutoCompartment ac(cx, g1);
+        JS::RootedValue prop(cx, JS::Int32Value(1337));
+
+        JS::RootedObject obj(cx, JS_NewObject(cx, nullptr, JS::NullPtr(), JS::NullPtr()));
+        v1 = JS::ObjectOrNullValue(obj);
+        CHECK(v1.isObject());
+        CHECK(JS_SetProperty(cx, obj, "prop", prop));
+    }
+
+    {
+        JSAutoCompartment ac(cx, g2);
+        JS::RootedValue v2(cx);
+
+        CHECK(JS_StructuredClone(cx, v1, &v2, nullptr, nullptr));
+        CHECK(v2.isObject());
+        JS::RootedObject obj(cx, &v2.toObject());
+
+        JS::RootedValue prop(cx);
+        CHECK(JS_GetProperty(cx, obj, "prop", &prop));
+        CHECK(prop.isInt32());
+        CHECK(&v1.toObject() != obj);
+        CHECK_EQUAL(prop.toInt32(), 1337);
+    }
+
+    return true;
+}
+END_TEST(testStructuredClone_object)
+
+BEGIN_TEST(testStructuredClone_string)
+{
+    JS::RootedObject g1(cx, createGlobal());
+    JS::RootedObject g2(cx, createGlobal());
+    CHECK(g1);
+    CHECK(g2);
+
+    JS::RootedValue v1(cx);
+
+    {
+        JSAutoCompartment ac(cx, g1);
+        JS::RootedValue prop(cx, JS::Int32Value(1337));
+
+        v1 = JS::StringValue(JS_NewStringCopyZ(cx, "Hello World!"));
+        CHECK(v1.isString());
+        CHECK(v1.toString());
+    }
+
+    {
+        JSAutoCompartment ac(cx, g2);
+        JS::RootedValue v2(cx);
+
+        CHECK(JS_StructuredClone(cx, v1, &v2, nullptr, nullptr));
+        CHECK(v2.isString());
+        CHECK(v2.toString());
+
+        JS::RootedValue expected(cx, JS::StringValue(
+            JS_NewStringCopyZ(cx, "Hello World!")));
+        CHECK_SAME(v2, expected);
+    }
+
+    return true;
+}
+END_TEST(testStructuredClone_string)