The Tor Browser / file revision

 function test() {

   const URI = "data:text/plain,bug562649";

   browserDOMWindow.openURI(makeURI(URI),

                            null,

                            Ci.nsIBrowserDOMWindow.OPEN_NEWTAB,

                            Ci.nsIBrowserDOMWindow.OPEN_EXTERNAL);

   ok(XULBrowserWindow.isBusy, "window is busy loading a page");

   is(gBrowser.userTypedValue, URI, "userTypedValue matches test URI");

   is(gURLBar.value, URI, "location bar value matches test URI");

   gBrowser.selectedTab = gBrowser.addTab();

   gBrowser.removeCurrentTab();

   is(gBrowser.userTypedValue, URI, "userTypedValue matches test URI after switching tabs");

   is(gURLBar.value, URI, "location bar value matches test URI after switching tabs");

   waitForExplicitFinish();

   gBrowser.selectedBrowser.addEventListener("load", function () {

     gBrowser.selectedBrowser.removeEventListener("load", arguments.callee, true);

     is(gBrowser.userTypedValue, null, "userTypedValue is null as the page has loaded");

     is(gURLBar.value, URI, "location bar value matches test URI as the page has loaded");

     gBrowser.removeCurrentTab();

     finish();

   }, true);

 }