capture-muted.html

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This test has a WPT meta file that expects 3 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /mediacapture-fromelement/capture-muted.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<head>

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

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

</head>

<body>

<script>

// Run captureStream() on different muted videos, and assert data is flowing.

function makeAsyncTest(filename) {

    return async function(test) {

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

        video.src = "/media/" + filename;

        video.muted = true;

        video.onerror = test.unreached_func("<video> error");

        video.play();

        const stream = video.captureStream();

        await new Promise(r => stream.onaddtrack = r);

        const recorder = new MediaRecorder(stream);

        recorder.start(0);

        const {data} = await new Promise(r => recorder.ondataavailable = r);

        assert_true(data.size > 0, 'Recorded data size should be > 0');

};

promise_test(makeAsyncTest("test-v-128k-320x240-24fps-8kfr.webm"), "video-only.");

promise_test(makeAsyncTest("test-a-128k-44100Hz-1ch.webm"), "audio-only");

promise_test(makeAsyncTest("test-av-384k-44100Hz-1ch-320x240-30fps-10kfr.webm"), "video+audio");

</script>

</body>

</html>