michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: "use strict";
michael@0: 
michael@0: const { Loader } = require("sdk/test/loader");
michael@0: const { open, close } = require("sdk/window/helpers");
michael@0: const { browserWindows: windows } = require("sdk/windows");
michael@0: const { isBrowser } = require('sdk/window/utils');
michael@0: const app = require("sdk/system/xul-app");
michael@0: 
michael@0: exports["test unload window observer"] = function(assert, done) {
michael@0:   // Hacky way to be able to create unloadable modules via makeSandboxedLoader.
michael@0:   let loader = Loader(module);
michael@0:   let observer = loader.require("sdk/windows/observer").observer;
michael@0:   let opened = 0;
michael@0:   let closed = 0;
michael@0:   let windowsOpen = windows.length;
michael@0: 
michael@0:   observer.on("open", onOpen);
michael@0:   observer.on("close", onClose);
michael@0: 
michael@0:   // On Fennec, only test that the module does not throw an error
michael@0:   if (app.is("Fennec")) {
michael@0:     assert.pass("Windows observer did not throw on Fennec");
michael@0:     return cleanUp();
michael@0:   }
michael@0: 
michael@0:   // Open window and close it to trigger observers.
michael@0:   open().
michael@0:     then(close).
michael@0:     then(loader.unload).
michael@0:     then(open).
michael@0:     then(close).
michael@0:     then(function() {
michael@0:       // Enqueuing asserts to make sure that assertion is not performed early.
michael@0:       assert.equal(1, opened, "observer open was called before unload only");
michael@0:       assert.equal(windowsOpen + 1, closed, "observer close was called before unload only");
michael@0:     }).
michael@0:     then(cleanUp, assert.fail);
michael@0: 
michael@0:   function cleanUp () {
michael@0:     observer.removeListener("open", onOpen);
michael@0:     observer.removeListener("close", onClose);
michael@0:     done();
michael@0:   }
michael@0: 
michael@0:   function onOpen(window) {
michael@0:     // Ignoring non-browser windows
michael@0:     if (isBrowser(window))
michael@0:       opened++;
michael@0:   }
michael@0:   function onClose(window) {
michael@0:     // Ignore non-browser windows & already opened `activeWindow` (unload will
michael@0:     // emit close on it even though it is not actually closed).
michael@0:     if (isBrowser(window))
michael@0:       closed++;
michael@0:   }
michael@0: };
michael@0: 
michael@0: require("sdk/test").run(exports);