The Tor Browser / file revision

 /* globals Components: true, Promise: true, gBrowser: true, Test: true,

            info: true, is: true, window: true, waitForExplicitFinish: true,

            finish: true, ok: true*/

 "use strict";

 const { interfaces: Ci, classes: Cc, utils: Cu } = Components;

 const { addObserver, removeObserver } = Cc["@mozilla.org/observer-service;1"].

                                           getService(Ci.nsIObserverService);

 const { openWindow } = Cc["@mozilla.org/embedcomp/window-watcher;1"].

                          getService(Ci.nsIWindowWatcher);

 const Test = routine => () => {

   waitForExplicitFinish();

   Task.spawn(routine)

       .then(finish, error => {

         ok(false, error);

         finish();

       });

 };

 // Returns promise for the observer notification subject for

 // the given topic. If `receive("foo")` is called `n` times

 // nth promise is resolved on an `nth` "foo" notification.

 const receive = (topic, p, syncCallback) => {

   const { promise, resolve, reject } = Promise.defer();

   const { queue } = receive;

   const timeout = () => {

     queue.splice(queue.indexOf(resolve) - 1, 2);

     reject(new Error("Timeout"));

   };

   const observer = {

     observe: subject => {

       // Browser loads bunch of other documents that we don't care

       // about so we let allow filtering notifications via `p` function.

       if (p && !p(subject)) return;

       // If observer is a first one with a given `topic`

       // in a queue resolve promise and take it off the queue

       // otherwise keep waiting.

       const index = queue.indexOf(topic);

       if (queue.indexOf(resolve) === index + 1) {

         removeObserver(observer, topic);

         clearTimeout(id, reject);

         queue.splice(index, 2);

         // Some tests need to be executed synchronously when the event is fired.

         if (syncCallback) {

           syncCallback(subject);

         }

         resolve(subject);

       }

     }

   };

   const id = setTimeout(timeout, 90000);

   addObserver(observer, topic, false);

   queue.push(topic, resolve);

   return promise;

 };

 receive.queue = [];

 const openTab = uri => gBrowser.selectedTab = gBrowser.addTab(uri);

 const sleep = ms => {

   const { promise, resolve } = Promise.defer();

   setTimeout(resolve, ms);

   return promise;

 };

 const isData = document => document.URL.startsWith("data:");

 const uri1 = "data:text/html;charset=utf-8,<h1>1</h1>";

 // For whatever reason going back on load event doesn't work so timeout it is :(

 const uri2 = "data:text/html;charset=utf-8,<h1>2</h1><script>setTimeout(back,100)</script>";

 const uri3 = "data:text/html;charset=utf-8,<h1>3</h1>";

 const uri4 = "chrome://browser/content/license.html";

 const test = Test(function*() {

   let documentInteractive = receive("content-document-interactive", isData, d => {

     // This test is executed synchronously when the event is received.

     is(d.readyState, "interactive", "document is interactive");

     is(d.URL, uri1, "document.URL matches tab url");

   });

   let documentLoaded = receive("content-document-loaded", isData);

   let pageShown = receive("content-page-shown", isData);

   info("open: uri#1");

   const tab1 = openTab(uri1);

   const browser1 = gBrowser.getBrowserForTab(tab1);

   let interactiveDocument1 = yield documentInteractive;

   let loadedDocument1 = yield documentLoaded;

   is(loadedDocument1.readyState, "complete", "document is loaded");

   is(interactiveDocument1, loadedDocument1, "interactive document is loaded");

   let shownPage = yield pageShown;

   is(interactiveDocument1, shownPage, "loaded document is shown");

   // Wait until history entry is created before loading new uri.

   yield receive("sessionstore-state-write-complete");

   info("load uri#2");

   documentInteractive = receive("content-document-interactive", isData, d => {

     // This test is executed synchronously when the event is received.

     is(d.readyState, "interactive", "document is interactive");

     is(d.URL, uri2, "document.URL matches URL loaded");

   });

   documentLoaded = receive("content-document-loaded", isData);

   pageShown = receive("content-page-shown", isData);

   let pageHidden = receive("content-page-hidden", isData);

   browser1.loadURI(uri2);

   let hiddenPage = yield pageHidden;

   is(interactiveDocument1, hiddenPage, "loaded document is hidden");

   let interactiveDocument2 = yield documentInteractive;

   let loadedDocument2 = yield documentLoaded;

   is(loadedDocument2.readyState, "complete", "document is loaded");

   is(interactiveDocument2, loadedDocument2, "interactive document is loaded");

   shownPage = yield pageShown;

   is(interactiveDocument2, shownPage, "loaded document is shown");

   info("go back to uri#1");

   documentInteractive = receive("content-document-interactive", isData, d => {

     // This test is executed synchronously when the event is received.

     is(d.readyState, "interactive", "document is interactive");

     is(d.URL, uri3, "document.URL matches URL loaded");

   });

   documentLoaded = receive("content-document-loaded", isData);

   pageShown = receive("content-page-shown", isData);

   pageHidden = receive("content-page-hidden", isData);

   hiddenPage = yield pageHidden;

   is(interactiveDocument2, hiddenPage, "new document is hidden");

   shownPage = yield pageShown;

   is(interactiveDocument1, shownPage, "previous document is shown");

   info("load uri#3");

   browser1.loadURI(uri3);

   pageShown = receive("content-page-shown", isData);

   let interactiveDocument3 = yield documentInteractive;

   let loadedDocument3 = yield documentLoaded;

   is(loadedDocument3.readyState, "complete", "document is loaded");

   is(interactiveDocument3, loadedDocument3, "interactive document is loaded");

   shownPage = yield pageShown;

   is(interactiveDocument3, shownPage, "previous document is shown");

   gBrowser.removeTab(tab1);

   info("load chrome uri");

   const tab2 = openTab(uri4);

   documentInteractive = receive("chrome-document-interactive", null, d => {

     // This test is executed synchronously when the event is received.

     is(d.readyState, "interactive", "document is interactive");

     is(d.URL, uri4, "document.URL matches URL loaded");

   });

   documentLoaded = receive("chrome-document-loaded");

   pageShown = receive("chrome-page-shown");

   const interactiveDocument4 = yield documentInteractive;

   let loadedDocument4 = yield documentLoaded;

   is(loadedDocument4.readyState, "complete", "document is loaded");

   is(interactiveDocument4, loadedDocument4, "interactive document is loaded");

   shownPage = yield pageShown;

   is(interactiveDocument4, shownPage, "loaded chrome document is shown");

   pageHidden = receive("chrome-page-hidden");

   gBrowser.removeTab(tab2);

   hiddenPage = yield pageHidden;

   is(interactiveDocument4, hiddenPage, "chrome document hidden");

 });