<!DOCTYPE HTML> <html> <head> <meta charset="utf-8"> <title>The navigation_id Detached iframe Parent Page.</title> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> </head> <body> <script> promise_test(t => { return new Promise(resolve => { const frame = document.createElement("iframe"); frame.addEventListener("load", async () => { // Wait for iframe to be detached. while (frame.contentWindow) { await new Promise(r => t.step_timeout(r, 10)); } resolve(); }); frame.src = "resources/navigation-id-detached-frame-page.html"; document.body.appendChild(frame); }); }, "The navigation_id getter does not crash a window of detached frame"); </script> </body> </html>