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<!doctype html>
<title>Scheduler: postTask with Detached Frame's Signal</title>
<link rel="author" title="Nate Chapin" href="">
<link rel="help" href="">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
'use strict';
promise_test(async t => {
await new Promise((resolve) => {
window.addEventListener('load', resolve);
const frame = document.createElement('iframe');
frame.srcdoc = `
const controller = new TaskController();
window.childFrameSignal = controller.signal;
await new Promise((resolve) => {
frame.addEventListener('load', resolve)
const signal = frame.contentWindow.childFrameSignal;
return scheduler.postTask(() => {}, {signal});
}, 'Test scheduler.postTask() with a signal from a detached iframe');