<!doctype html>
<meta charset=utf-8>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
'use strict';

promise_test(async t => {
  const pc1 = new RTCPeerConnection();
  t.add_cleanup(() => pc1.close());
  const pc2 = new RTCPeerConnection();
  t.add_cleanup(() => pc2.close());

  const audioTransceiver = pc1.addTransceiver('audio', {direction:'recvonly'});

  await pc1.setLocalDescription();
  await pc2.setRemoteDescription(pc1.localDescription);
  await pc2.setLocalDescription();
  await pc1.setRemoteDescription(pc2.localDescription);

  audioTransceiver.direction = 'sendrecv';

  await pc1.setLocalDescription();
  await pc2.setRemoteDescription(pc1.localDescription);
  await pc2.setLocalDescription();
  await pc1.setRemoteDescription(pc2.localDescription);
}, '[audio] recvonly transceiver can become sendrecv');

promise_test(async t => {
  const pc1 = new RTCPeerConnection();
  t.add_cleanup(() => pc1.close());
  const pc2 = new RTCPeerConnection();
  t.add_cleanup(() => pc2.close());

  const videoTransceiver = pc1.addTransceiver('video', {direction:'recvonly'});

  await pc1.setLocalDescription();
  await pc2.setRemoteDescription(pc1.localDescription);
  await pc2.setLocalDescription();
  await pc1.setRemoteDescription(pc2.localDescription);

  videoTransceiver.direction = 'sendrecv';

  await pc1.setLocalDescription();
  await pc2.setRemoteDescription(pc1.localDescription);
  await pc2.setLocalDescription();
  await pc1.setRemoteDescription(pc2.localDescription);
}, '[video] recvonly transceiver can become sendrecv');

</script>