The Tor Browser / file revision

 // ----------------------------------------------------------------------------

 // Tests installing an add-on from a local file with whitelisting disabled.

 // This should be blocked by the whitelist check.

 function test() {

   Harness.installBlockedCallback = allow_blocked;

   Harness.installsCompletedCallback = finish_test;

   Harness.setup();

   // Disable file request whitelisting, installing by file referrer should be blocked.

   Services.prefs.setBoolPref("xpinstall.whitelist.fileRequest", false);

   var cr = Components.classes["@mozilla.org/chrome/chrome-registry;1"]

                      .getService(Components.interfaces.nsIChromeRegistry);

   var chromeroot = extractChromeRoot(gTestPath);

   try {

     var xpipath = cr.convertChromeURL(makeURI(chromeroot)).spec;

   } catch (ex) {

     var xpipath = chromeroot; //scenario where we are running from a .jar and already extracted

   }

   var triggers = encodeURIComponent(JSON.stringify({

     "Unsigned XPI": TESTROOT + "unsigned.xpi"

   }));

   gBrowser.selectedTab = gBrowser.addTab();

   gBrowser.loadURI(xpipath + "installtrigger.html?" + triggers);

 }

 function allow_blocked(installInfo) {

   ok(true, "Seen blocked");

   return false;

 }

 function finish_test(count) {

   is(count, 0, "No add-ons should have been installed");

   Services.prefs.clearUserPref("xpinstall.whitelist.fileRequest");

   gBrowser.removeCurrentTab();

   Harness.finish();

 }