Test case for Bug 908318

testcase.js

let WW = Cc["@mozilla.org/appshell/window-mediator;1"].
    getService(Ci.nsIWindowMediator);
    
let window = WW.getMostRecentWindow("browser")
let document = window.document;
let menu = document.querySelector("#menu_EditPopup");
let menuitem = document.createElement("menuitem");

let clone = document.querySelector("#menu_copy").cloneNode(true);
let fresh = document.createElement("menuitem");
fresh.setAttribute("label", "Test");
fresh.setAttribute("acceltext", "test");

menu.appendChild(fresh);
menu.appendChild(clone);