<!doctype html>
<meta charset=utf-8>
<title>WebRTC IDL Tests</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/WebIDLParser.js"></script>
<script src="/resources/idlharness.js"></script>
<script src="./RTCPeerConnection-helper.js"></script>
<script>
  'use strict';

  // The following helper functions are called from RTCPeerConnection-helper.js:
  //   generateAnswer()
  //   generateMediaStreamTrack()

  // Put the global IDL test objects under a parent object.
  // This allows easier search for the test cases when
  // viewing the web page
  const idlTestObjects = {};

  // Helper function to create RTCTrackEvent object
  function initTrackEvent() {
    const pc = new RTCPeerConnection();
    const transceiver = pc.addTransceiver('audio');
    const { sender, receiver } = transceiver;
    const { track } = receiver;
    return new RTCTrackEvent('track', {
      receiver, track, transceiver
    });
  }

  // List of async test driver functions
  const asyncInitTasks = [
    asyncInitCertificate,
    asyncInitTransports,
    asyncInitMediaStreamTrack,
  ];

  // Asynchronously generate an RTCCertificate
  function asyncInitCertificate() {
    return RTCPeerConnection.generateCertificate({
      name: 'RSASSA-PKCS1-v1_5',
      modulusLength: 2048,
      publicExponent: new Uint8Array([1, 0, 1]),
      hash: 'SHA-256'
    }).then(cert => {
      idlTestObjects.certificate = cert;
    });
  }

  // Asynchronously generate instances of
  // RTCSctpTransport, RTCDtlsTransport,
  // and RTCIceTransport
  function asyncInitTransports() {
    const pc = new RTCPeerConnection();
    pc.createDataChannel('test');

    // setting answer description initializes pc.sctp
    return pc.createOffer()
    .then(offer =>
      pc.setLocalDescription(offer)
      .then(() => generateAnswer(offer)))
    .then(answer => pc.setRemoteDescription(answer))
    .then(() => {
      const sctpTransport = pc.sctp;
      assert_true(sctpTransport instanceof RTCSctpTransport,
        'Expect pc.sctp to be instance of RTCSctpTransport');
      idlTestObjects.sctpTransport = sctpTransport;

      const dtlsTransport = sctpTransport.transport;
      assert_true(dtlsTransport instanceof RTCDtlsTransport,
        'Expect sctpTransport.transport to be instance of RTCDtlsTransport');
      idlTestObjects.dtlsTransport = dtlsTransport;

      const iceTransport = dtlsTransport.transport;
      idlTestObjects.iceTransport = iceTransport;
    });
  }

  // Asynchoronously generate MediaStreamTrack from getUserMedia
  function asyncInitMediaStreamTrack() {
    return navigator.mediaDevices.getUserMedia({ audio: true })
    .then(mediaStream => {
      const tracks = mediaStream.getTracks();
      assert_greater_than(tracks.length, 0,
        'Expect media stream to have at least one track');

      idlTestObjects.mediaStreamTrack = tracks[0];
    });
  }

  // Run all async test drivers, report and swallow any error
  // thrown/rejected. Proper test for correct initialization
  // of the objects are done in their respective test files.
  function asyncInit() {
    return Promise.all(asyncInitTasks.map(
      task => {
        const t = async_test(`Test driver for ${task.name}`);
        let promise;
        t.step(() => {
          promise = task().then(
            t.step_func_done(),
            t.step_func(err =>
              assert_unreached(`Failed to run ${task.name}: ${err}`)));
        });
        return promise;
      }));
  }

  // Main function to do the IDL test, using fetched IDL text
  function doIdlTest(idlText) {
    const idlArray = new IdlArray();

    idlArray.add_untested_idls('interface EventHandler {};');
    idlArray.add_idls('interface MediaStreamTrack : EventTarget {};');
    idlArray.add_idls(idlText);

    idlArray.add_objects({
      'RTCPeerConnection': [`new RTCPeerConnection()`],

      'RTCSessionDescription': [`new RTCSessionDescription({ type: 'offer' })`],

      'RTCIceCandidate': [`new RTCIceCandidate({ sdpMid: 1 })`],

      'RTCDataChannel': [`new RTCPeerConnection().createDataChannel('')`],

      'RTCRtpTransceiver': [`new RTCPeerConnection().addTransceiver('audio')`],

      'RTCRtpSender': [`new RTCPeerConnection().addTransceiver('audio').sender`],

      'RTCRtpReceiver': [`new RTCPeerConnection().addTransceiver('audio').receiver`],

      'RTCPeerConnectionIceEvent': [`new RTCPeerConnectionIceEvent('ice')`],

      'RTCPeerConnectionIceErrorEvent':
        [`new RTCPeerConnectionIceErrorEvent('ice-error', { errorCode: 701 });`],

      'RTCTrackEvent': [`initTrackEvent()`],

      'RTCErrorEvent': [`new RTCErrorEvent('error')`],

      'RTCDataChannelEvent': [`new RTCDataChannelEvent('channel',
        { channel: new RTCPeerConnection().createDataChannel('') })`],

      // Async initialized objects below

      'RTCCertificate': ['idlTestObjects.certificate'],

      'RTCSctpTransport': ['idlTestObjects.sctpTransport'],

      'RTCDtlsTransport': ['idlTestObjects.dtlsTransport'],

      'RTCIceTransport': ['idlTestObjects.iceTransport'],

      // Test on both MediaStreamTrack from getUserMedia and transceiver
      'MediaStreamTrack': [
        `idlTestObjects.mediaStreamTrack`,
        `generateMediaStreamTrack('audio')`]
    });

    idlArray.test();
  }

  promise_test(t => {
    return asyncInit()
    .then(() => fetch('/interfaces/webrtc-pc.idl'))
    .then(response => response.text())
    .then(doIdlTest);
  }, 'Main test driver');

  /*
    TODO
      RTCRtpContributingSource
      RTCRtpSynchronizationSource
      RTCDTMFSender
      RTCDTMFToneChangeEvent
      RTCIdentityProviderRegistrar
      RTCIdentityAssertion
   */
</script>