michael@0: function browserWindowsCount(expected) {
michael@0:   var count = 0;
michael@0:   var e = Services.wm.getEnumerator("navigator:browser");
michael@0:   while (e.hasMoreElements()) {
michael@0:     if (!e.getNext().closed)
michael@0:       ++count;
michael@0:   }
michael@0:   is(count, expected,
michael@0:      "number of open browser windows according to nsIWindowMediator");
michael@0:   is(JSON.parse(ss.getBrowserState()).windows.length, expected,
michael@0:      "number of open browser windows according to getBrowserState");
michael@0: }
michael@0: 
michael@0: function test() {
michael@0:   waitForExplicitFinish();
michael@0: 
michael@0:   browserWindowsCount(1);
michael@0: 
michael@0:   var win = openDialog(location, "", "chrome,all,dialog=no");
michael@0:   win.addEventListener("load", function () {
michael@0:     win.removeEventListener("load", arguments.callee, false);
michael@0:     browserWindowsCount(2);
michael@0:     win.close();
michael@0:     browserWindowsCount(1);
michael@0:     finish();
michael@0:   }, false);
michael@0: }