request-video-frame-callback-parallel.html

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This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /video-rvfc/request-video-frame-callback-parallel.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<title>Test having multiple video.rVFC callbacks in flight for a single element.</title>

<body></body>

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

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

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

<script>

promise_test(async function(t) {

    let done;

    const promise = new Promise(resolve => done = resolve);

    let video = document.createElement('video');

    document.body.appendChild(video);

    let firstTime;

    let firstMetadata;

    video.requestVideoFrameCallback(t.step_func((time, metadata) => {

      firstTime = time;

      firstMetadata = metadata;

    }));

    video.requestVideoFrameCallback(t.step_func((time, metadata) => {

      assert_equals(firstTime, time);

      assert_object_equals(firstMetadata, metadata);

      done();

    }));

    video.src = getVideoURI('/media/movie_5');

    video.play();

    return promise;

}, 'Test callbacks get the same information.');

promise_test(async function(t) {

    let done;

    const promise = new Promise(resolve => done = resolve);

    let video = document.createElement('video');

    document.body.appendChild(video);

    let secondCallbackId;

    video.requestVideoFrameCallback(

      t.step_func(_ => { video.cancelVideoFrameCallback(secondCallbackId); })

);

    secondCallbackId = video.requestVideoFrameCallback(

      t.step_func(_ => {

        assert_unreached("Cancelled callbacks shouldn't be executed")

})

);

    // NOTE: This callback should be executed last.

    video.requestVideoFrameCallback(done);

    video.src = getVideoURI('/media/movie_5');

    video.play();

    return promise;

}, 'Test we can cancel callbacks from callbacks.');

</script>

</html>