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  <title>RTCPeerConnection setRemoteDescription tests</title>
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  <!--  These files are in place when executing on W3C.  -->
  <script src="/resources/testharness.js"></script>
  <script src="/resources/testharnessreport.js"></script>
  <script type="text/javascript">
  // tests that onaddstream is called and parses the msid information from the SDP and creates
  // the streams and tracks with matching identifiers.
  // TODO: onaddstream is no longer part of the spec but is more widely implemented than ontrack
  //       as of Feb. 2017. This test should be deprecated once ontrack is more widely implemented.
  async_test(function(test) {
    const sdp = 'v=0\r\n' +
        'o=- 166855176514521964 2 IN IP4 127.0.0.1\r\n' +
        's=-\r\n' +
        't=0 0\r\n' +
        'a=msid-semantic:WMS *\r\n' +
        'm=audio 9 UDP/TLS/RTP/SAVPF 111\r\n' +
        'c=IN IP4 0.0.0.0\r\n' +
        'a=rtcp:9 IN IP4 0.0.0.0\r\n' +
        'a=ice-ufrag:someufrag\r\n' +
        'a=ice-pwd:somelongpwdwithenoughrandomness\r\n' +
        'a=fingerprint:sha-256 8C:71:B3:8D:A5:38:FD:8F:A4:2E:A2:65:6C:86:52:BC:E0:6E:94:F2:9F:7C:4D:B5:DF:AF:AA:6F:44:90:8D:F4\r\n' +
        'a=setup:actpass\r\n' +
        'a=rtcp-mux\r\n' +
        'a=mid:mid1\r\n' +
        'a=sendonly\r\n' +
        'a=rtpmap:111 opus/48000/2\r\n' +
        'a=msid:stream1 track1\r\n' +
        'a=ssrc:1001 cname:some\r\n';

    var pc = new RTCPeerConnection(null);

    pc.onaddstream = test.step_func(function(event) {
      assert_equals(event.stream.getTracks().length, 1, 'the stream contains one track');
      assert_equals(event.stream.getAudioTracks().length, 1, 'the stream contains one audio track');
      assert_equals(event.stream.getVideoTracks().length, 0, 'the stream contains no video tracks');

      assert_equals(event.stream.id, 'stream1', 'the stream name is parsed from the MSID line');
      assert_equals(event.stream.getTracks()[0].id, 'track1', 'the track name is parsed from the MSID line');
      test.done();
    });

    pc.setRemoteDescription(new RTCSessionDescription({type: 'offer', sdp: sdp}))
    .catch(test.step_func(function(e) {
      assert_unreached('Error ' + e.name + ': ' + e.message);
    }));
  }, 'Triggers onaddstream when called with a remote description and the MSID is parsed.');
</script>

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