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: 
michael@0: "use strict";
michael@0: 
michael@0: // TODO Fennec support in Bug #894525
michael@0: module.metadata = {
michael@0:   "engines": {
michael@0:     "Firefox": "*"
michael@0:   }
michael@0: }
michael@0: 
michael@0: const { openTab, closeTab } = require("sdk/tabs/utils");
michael@0: const { Loader } = require("sdk/test/loader");
michael@0: const { setTimeout } = require("sdk/timers");
michael@0: 
michael@0: exports["test unload tab observer"] = function(assert, done) {
michael@0:   let loader = Loader(module);
michael@0: 
michael@0:   let window = loader.require("sdk/deprecated/window-utils").activeBrowserWindow;
michael@0:   let observer = loader.require("sdk/tabs/observer").observer;
michael@0:   let opened = 0;
michael@0:   let closed = 0;
michael@0: 
michael@0:   observer.on("open", function onOpen(window) { opened++; });
michael@0:   observer.on("close", function onClose(window) { closed++; });
michael@0: 
michael@0:   // Open and close tab to trigger observers.
michael@0:   closeTab(openTab(window, "data:text/html;charset=utf-8,tab-1"));
michael@0: 
michael@0:   // Unload the module so that all listeners set by observer are removed.
michael@0:   loader.unload();
michael@0: 
michael@0:   // Open and close tab once again.
michael@0:   closeTab(openTab(window, "data:text/html;charset=utf-8,tab-2"));
michael@0: 
michael@0:   // Enqueuing asserts to make sure that assertion is not performed early.
michael@0:   setTimeout(function () {
michael@0:     assert.equal(1, opened, "observer open was called before unload only");
michael@0:     assert.equal(1, closed, "observer close was called before unload only");
michael@0:     done();
michael@0:   }, 0);
michael@0: };
michael@0: 
michael@0: require("test").run(exports);
michael@0: