element-ready-check-allowed-cross-origin.sub.html

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This WPT test may be referenced by the following Test IDs:
- /fullscreen/api/element-ready-check-allowed-cross-origin.sub.html - WPT Dashboard Interop Dashboard

<!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>