The Tor Browser / file revision

 /* 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 version downgrade MAR security check */

 function run_test() {

   if (!IS_MAR_CHECKS_ENABLED) {

     return;

   }

   setupTestCommon();

   // We don't actually care if the MAR has any data, we only care about the

   // application return code and update.status result.

   gTestFiles = gTestFilesCommon;

   gTestDirs = [];

   setupUpdaterTest(FILE_OLD_VERSION_MAR, false, false);

   // Apply the MAR

   // Note that if execv is used, the updater process will turn into the

   // callback process, so its return code will be that of the callback

   // app.

   runUpdate((USE_EXECV ? 0 : 1), STATE_FAILED_VERSION_DOWNGRADE_ERROR);

 }

 function checkUpdateApplied() {

   checkFilesAfterUpdateSuccess();

   doTestFinish();

 }