diff -r 000000000000 -r 6474c204b198 addon-sdk/source/test/test-libxul.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/addon-sdk/source/test/test-libxul.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,18 @@
+/* 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/. */
+
+// Test that we can link with libxul using js-ctypes
+
+const {Cu} = require("chrome");
+const {ctypes} = Cu.import("resource://gre/modules/ctypes.jsm", {});
+const {OS} = Cu.import("resource://gre/modules/osfile.jsm", {});
+
+exports.test = function(assert) {
+  let path = OS.Constants.Path.libxul;
+  assert.pass("libxul is at " + path);
+  let lib = ctypes.open(path);
+  assert.ok(lib != null, "linked to libxul successfully");
+};
+
+require('test').run(exports);