<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>HTMLMediaElement GC</title>
    <script src="../../resources/testharness.js"></script>
    <script src="../../resources/testharnessreport.js"></script>
    <script src="../../resources/gc.js"></script>
    <script>
let stream;
async function createMediaElement(setToNull)
{
    const video = document.createElement('video');
    if (!stream)
       stream = await navigator.mediaDevices.getUserMedia({audio:true});
    video.srcObject = stream;
    video.onclick = () => { };
    await video.play().then(() => { }, () => { });
    await video.pause();
    if (setToNull)
        video.srcObject = null;
    await new Promise(resolve => setTimeout(resolve, 0));
}

promise_test(async (test) => {
    if (!window.internals)
        return;
    await createMediaElement(false);
    gc();
    assert_equals(internals.mediaElementCount, 1);
}, "Keep alive a video element with a live srcObject");

promise_test(async (test) => {
    if (!window.internals)
        return;
    assert_equals(internals.mediaElementCount, 1, "test 1");
    await createMediaElement(true);
    let counter = 0;
    while (++counter < 100) {
        gc();
        if (internals.mediaElementCount === 1)
            break;
        assert_equals(internals.mediaElementCount, 2, "test 2");
        await new Promise(resolve => setTimeout(resolve, 50));
    }
    assert_equals(internals.mediaElementCount, 1, "test 3");
}, "GC a video element with a live srcObject, then srcObject set to null");
    </script>
</head>
<body>
</body>
</html>