"use strict"; var gTestTab; var gContentAPI; add_task(setup_UITourTest); add_UITour_task(async function() { ok( !gBrowser.selectedBrowser.isArticle, "Should not be an article when we start" ); ok( document.getElementById("reader-mode-button").hidden, "Button should be hidden." ); await gContentAPI.forceShowReaderIcon(); await waitForConditionPromise(() => gBrowser.selectedBrowser.isArticle); ok(gBrowser.selectedBrowser.isArticle, "Should suddenly be an article."); ok( !document.getElementById("reader-mode-button").hidden, "Button should now be visible." ); });