describe("readyState", () => { loadLocalPage("/res/html/misc/blank.html"); beforeInitialPageLoad(page => { window.events = []; page.document.addEventListener("readystatechange", () => { window.events.push(page.document.readyState); }); page.document.addEventListener("DOMContentLoaded", () => { test("Ready state should be 'interactive' when 'DOMContentLoaded' fires", () => { expect(page.document.readyState).toBe("interactive"); }); }); test("Ready state should be 'loading' initially", () => { expect(page.document.readyState).toBe("loading"); }); }); afterInitialPageLoad(page => { test("'interactive' should come before 'complete' and both should have happened", () => { expect(page.window.events).toHaveLength(2); expect(page.window.events[0]).toBe("interactive"); expect(page.window.events[1]).toBe("complete"); }); test("Ready state should be 'complete' after loading", () => { expect(page.document.readyState).toBe("complete"); }); }); waitForPageToLoad(); });