<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <script src="mediaStreamPlayback.js"></script>
</head>
<body>
  <script>
"use strict";

createHTML({
  title: "Test labeled devices or speakers aren't exposed in enumerateDevices() after fake getUserMedia()",
  bug: "1743524"
});

runTest(async () => {
  await pushPrefs(
    ["media.setsinkid.enabled", true],
    // This test uses real devices because fake devices are not grouped with
    // audiooutput devices.
    ["media.navigator.streams.fake", false]);
  const devices = navigator.mediaDevices;
  {
    // `fake:true` means that getUserMedia() resolves without any permission
    // check, and so this should not be sufficient to expose real device info.
    const stream = await devices.getUserMedia({ audio: true, fake: true });
    stream.getTracks()[0].stop();
    const list = await devices.enumerateDevices();
    const labeledDevices = list.filter(({label}) => label != "");
    is(labeledDevices.length, 0, "must be zero labeled devices after fake gUM");
    const outputDevices = list.filter(({kind}) => kind == "audiooutput");
    is(outputDevices.length, 0, "must be zero output devices after fake gUM");
  }
  {
    // Check without `fake:true` to verify assumptions about existing devices.
    let stream;
    try {
      stream = await devices.getUserMedia({ audio: true });
      stream.getTracks()[0].stop();
    } catch (e) {
      if (e.name == "NotFoundError" &&
          navigator.userAgent.includes("Mac OS X")) {
        todo(false, "Expecting no real audioinput device on Mac test machines");
        return;
      }
      throw e;
    }
    {
      const list = await devices.enumerateDevices();
      const audioDevices = list.filter(({kind}) => kind.includes("audio"));
      ok(audioDevices.length, "have audio devices after real gUM");
      const unlabeledAudioDevices = audioDevices.filter(({label}) => !label);
      is(unlabeledAudioDevices.length, 0,
         "must be zero unlabeled audio devices after real gUM");

      const outputDevices = list.filter(({kind}) => kind == "audiooutput");
      isnot(outputDevices.length, 0, "have output devices after real gUM");
    }
  }
});
  </script>
</body>
</html>
