The Tor Browser / file revision

 // -*- Mode: js2; tab-width: 2; indent-tabs-mode: nil; js2-basic-offset: 2; js2-skip-preprocessor-directives: t; -*-

 /* 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/. */

 Components.utils.import("resource://gre/modules/ctypes.jsm");

 Components.utils.import("resource://gre/modules/JNI.jsm");

 add_task(function test_JNI() {

   let iconSize = -1;

   let jni = null;

   try {

     jni = new JNI();

     let cls = jni.findClass("org/mozilla/gecko/GeckoAppShell");

     let method = jni.getStaticMethodID(cls, "getPreferredIconSize", "()I");

     iconSize = jni.callStaticIntMethod(cls, method);

   } finally {

     if (jni != null) {

       jni.close();

     }

   }

   do_check_neq(iconSize, -1);

 });

 run_next_test();