The Tor Browser / file revision

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

 function run_test() {

   let pluginDefaultState = Services.prefs.getIntPref("plugin.default.state");

   // if this fails, we just have to switch around the values we're testing

   do_check_neq(pluginDefaultState, Ci.nsIPluginTag.STATE_DISABLED);

   let nonDefaultState = (pluginDefaultState != Ci.nsIPluginTag.STATE_ENABLED ?

                          Ci.nsIPluginTag.STATE_ENABLED :

                          Ci.nsIPluginTag.STATE_CLICKTOPLAY);

   let ph = Cc["@mozilla.org/plugin/host;1"].getService(Ci.nsIPluginHost);

   let testPlugin = get_test_plugintag();

   // the test plugin should have the default enabledState

   do_check_eq(testPlugin.enabledState, pluginDefaultState);

   let secondTestPlugin = get_test_plugintag("Second Test Plug-in");

   // set an enabledState for the second test plugin

   secondTestPlugin.enabledState = Ci.nsIPluginTag.STATE_DISABLED;

   // change what the default enabledState is

   Services.prefs.setIntPref("plugin.default.state", nonDefaultState);

   // the test plugin should follow the default (it has no individual pref yet)

   do_check_eq(testPlugin.enabledState, nonDefaultState);

   // the second test plugin should retain its preferred state

   do_check_eq(secondTestPlugin.enabledState, Ci.nsIPluginTag.STATE_DISABLED);

   // clean up

   testPlugin.enabledState = pluginDefaultState;

   secondTestPlugin.enabledState = pluginDefaultState;

   Services.prefs.clearUserPref("plugin.default.state");

   Services.prefs.clearUserPref("plugin.importedState");

 }