function test() { waitForExplicitFinish(); var pageInfo; gBrowser.selectedTab = gBrowser.addTab(); gBrowser.selectedBrowser.addEventListener("load", function () { gBrowser.selectedBrowser.removeEventListener("load", arguments.callee, true); pageInfo = BrowserPageInfo(); Services.obs.addObserver(observer, "page-info-dialog-loaded", false); }, true); content.location = "https://example.com/browser/browser/base/content/test/feed_tab.html"; function observer(win, topic, data) { if (topic != "page-info-dialog-loaded") return; handlePageInfo(); } function $(aId) { return pageInfo.document.getElementById(aId) }; function handlePageInfo() { var feedTab = $("feedTab"); var feedListbox = $("feedListbox"); ok(feedListbox, "Feed list is null (feeds tab is broken)"); var feedRowsNum = feedListbox.getRowCount(); ok(feedRowsNum == 3, "Number of feeds listed: " + feedRowsNum + ", should be 3"); for (var i = 0; i < feedRowsNum; i++) { let feedItem = feedListbox.getItemAtIndex(i); ok(feedItem.getAttribute("name") == (i+1), "Name given: " + feedItem.getAttribute("name") + ", should be " + (i+1)); } pageInfo.close(); gBrowser.removeCurrentTab(); finish(); } }