MediaDevices-enumerateDevices-persistent-permission.https.html

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This WPT test may be referenced by the following Test IDs:
- /mediacapture-streams/MediaDevices-enumerateDevices-persistent-permission.https.html - WPT Dashboard Interop Dashboard

<!doctype html>

<html>

<head>

<title>enumerateDevices depends only on capture state, not permission state</title>

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

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

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

<script src=/resources/testdriver-vendor.js></script>

<script src=permission-helper.js></script>

</head>

<body>

<script>

  promise_test(async t => {

    await setMediaPermission();

    const stream = await navigator.mediaDevices.getUserMedia({audio : true, video: true});

    stream.getTracks().forEach(t => t.stop());

    // the page loaded below hasn't had capture enabled

    // so enumerateDevices should not list detailed info yet

    const iframe = document.createElement("iframe");

    iframe.setAttribute("allow", "microphone;camera");

    iframe.src = "/mediacapture-streams/iframe-enumerate-nogum.html";

    document.body.appendChild(iframe);

    const loadWatcher = new EventWatcher(t, iframe, ['load']);

    await loadWatcher.wait_for('load');

    const msgWatcher = new EventWatcher(t, window, ['message']);

    frames[0].postMessage('run', '*')

    const e = await msgWatcher.wait_for('message');

    const iframeDevices = e.data.devices;

    const kinds = iframeDevices.map(({kind}) => kind);

    assert_equals(kinds.length, new Set(kinds).size, "At most one of a kind prior to capture");

    for (const device of iframeDevices) {

      assert_equals(device.deviceId, "", "deviceId pre-capture is empty");

      assert_equals(device.label, "", "label pre-capture is empty");

      assert_equals(device.groupId, "", "groupId pre-capture is empty");

});

</script>