LayoutTests/http/tests/webrtc/audioSessionInFrames.html

<!DOCTYPE html>
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
function with_iframe(url, allow) {
    let frame = document.createElement('iframe');
    frame.src = url;
    frame.setAttribute('allow', allow);
    return new Promise(resolve => {
        frame.onload = () => { resolve(frame); };
        document.body.appendChild(frame);
    });
}

// The frame posts its result from its own load event. Listen before creating the frame: with the
// frame in another process, its message and its load notification arrive as separate IPCs, so a
// listener installed after awaiting the load can miss the message.
function nextMessage() {
    return new Promise(resolve => window.addEventListener("message", event => resolve(event.data), { once: true }));
}

promise_test(async () => {
    navigator.audioSession.type = "play-and-record";
    const stream = await navigator.mediaDevices.getUserMedia({ audio: true });

    const message1 = nextMessage();
    const frame1 = await with_iframe("http://localhost:8080/webrtc/resources/audioSessionFrame.html", "microphone:'none'");
    const result1 = await message1;
    frame1.remove();

    const message2 = nextMessage();
    const frame2 = await with_iframe("http://localhost:8080/webrtc/resources/audioSessionFrame.html", "microphone");
    const result2 = await message2;
    frame2.remove();

    assert_equals(result1.type, "auto");
    assert_equals(result1.state, "inactive");

    assert_equals(result2.type, "play-and-record");
    assert_equals(result2.state, "active");

    stream.getTracks().forEach(t => t.stop());
}, "Allow audioSession in iframes where microphone is allowed");
</script>
</body>