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<!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');
video.muted = true;
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');
video.muted = true;
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>
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