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<!DOCTYPE html>
<title>Element ready check with allowfullscreen attribute</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="../trusted-click.js"></script>
<iframe name="cross-origin-allowed" allowfullscreen></iframe>
<script>
promise_test(async (t) => {
// Trigger the child frame to report as soon as its content is loaded.
const iframe = document.querySelector("iframe");
await new Promise((resolve) => {
iframe.onload = resolve;
iframe.src =
"http://{{hosts[][]}}:{{ports[http][0]}}/fullscreen/api/resources/attempt-fullscreen.html";
});
// Activate the child frame.
await test_driver.click(iframe);
// When a message is received from a child frame, ensure that the report
// matches the expectations.
const messagePromise = promiseMessage(iframe);
const data = await messagePromise;
assert_true(
data.report.result,
`${data.report.frame} frame did enter fullscreen`
);
}, "Element ready check with allowfullscreen attribute");
</script>
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