loaf-iframe-self.html

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This WPT test may be referenced by the following Test IDs:
- /long-animation-frame/tentative/loaf-iframe-self.html - WPT Dashboard Interop Dashboard

<!DOCTYPE HTML>

<meta charset=utf-8>

<title>Long Animation Frame Timing: iframes (self)</title>

<meta name="timeout" content="long">

<body>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/common/get-host-info.sub.js"></script>

<script src="/common/utils.js"></script>

<script src="/common/dispatcher/dispatcher.js"></script>

<script src="resources/utils.js"></script>

<div id="log"></div>

<script>

const host_info = get_host_info();

for (const origin of ["ORIGIN", "REMOTE_ORIGIN", "HTTP_NOTSAMESITE_ORIGIN"]) {

    promise_test(async t => {

        const [executor] = await prepare_exec_iframe(t, host_info[origin]);

        const entry = await executor.execute_script(async (duration) => {

            const entryPromise = new Promise(resolve => new PerformanceObserver(list => {

                resolve(list.getEntries(0));

            }).observe({entryTypes: ["long-animation-frame"]}));

            const deadline = performance.now() + duration;

            while (performance.now() < deadline) {}

            return entryPromise;

        }, [very_long_frame_duration]);

    }, `frames receive own long animation frames (${origin})`);

</script>

</body>