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/. */

 "use strict";

 const { Loader } = require("sdk/test/loader");

 const { open, close } = require("sdk/window/helpers");

 const { browserWindows: windows } = require("sdk/windows");

 const { isBrowser } = require('sdk/window/utils');

 const app = require("sdk/system/xul-app");

 exports["test unload window observer"] = function(assert, done) {

   // Hacky way to be able to create unloadable modules via makeSandboxedLoader.

   let loader = Loader(module);

   let observer = loader.require("sdk/windows/observer").observer;

   let opened = 0;

   let closed = 0;

   let windowsOpen = windows.length;

   observer.on("open", onOpen);

   observer.on("close", onClose);

   // On Fennec, only test that the module does not throw an error

   if (app.is("Fennec")) {

     assert.pass("Windows observer did not throw on Fennec");

     return cleanUp();

   }

   // Open window and close it to trigger observers.

   open().

     then(close).

     then(loader.unload).

     then(open).

     then(close).

     then(function() {

       // Enqueuing asserts to make sure that assertion is not performed early.

       assert.equal(1, opened, "observer open was called before unload only");

       assert.equal(windowsOpen + 1, closed, "observer close was called before unload only");

     }).

     then(cleanUp, assert.fail);

   function cleanUp () {

     observer.removeListener("open", onOpen);

     observer.removeListener("close", onClose);

     done();

   }

   function onOpen(window) {

     // Ignoring non-browser windows

     if (isBrowser(window))

       opened++;

   }

   function onClose(window) {

     // Ignore non-browser windows & already opened `activeWindow` (unload will

     // emit close on it even though it is not actually closed).

     if (isBrowser(window))

       closed++;

   }

 };

 require("sdk/test").run(exports);