/* Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ */ function test() { waitForExplicitFinish(); window.addEventListener( "SSWindowStateBusy", function () { let state = ss.getWindowState(window); ok(state.windows[0].busy, "window is busy"); window.addEventListener( "SSWindowStateReady", function () { let state2 = ss.getWindowState(window); ok(!state2.windows[0].busy, "window is not busy"); executeSoon(() => { gBrowser.removeTab(gBrowser.tabs[1]); finish(); }); }, { once: true } ); }, { once: true } ); // create a new tab let tab = BrowserTestUtils.addTab(gBrowser, "about:mozilla"); let browser = tab.linkedBrowser; // close and restore it browser.addEventListener( "load", function () { gBrowser.removeTab(tab); ss.undoCloseTab(window, 0); }, { capture: true, once: true } ); }