<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Testing basic video exchange from offerer to receiver</title>
        <script src="../../resources/testharness.js"></script>
        <script src="../../resources/testharnessreport.js"></script>
    </head>
    <body>
        <script>
if (window.testRunner)
    testRunner.setUserMediaPermission(true);

promise_test((test) => {
     var localConnection = new RTCPeerConnection();
     var remoteConnection = new RTCPeerConnection();
     var currentSDP;
     return navigator.mediaDevices.getUserMedia({ video: true}).then((stream) => {

        localConnection.addTrack(stream.getVideoTracks()[0], stream);
        return localConnection.createOffer();
    }).then((desc) => {
        currentSDP = desc.sdp;

        assert_equals(localConnection.currentLocalDescription, null);
        assert_equals(localConnection.pendingLocalDescription, null);
        assert_equals(localConnection.localDescription, null);

        assert_equals(remoteConnection.currentRemoteDescription, null);
        assert_equals(remoteConnection.pendingRemoteDescription, null);
        assert_equals(remoteConnection.remoteDescription, null);

        localDescriptionPromise = localConnection.setLocalDescription(desc);
        remoteDescriptionPromise = remoteConnection.setRemoteDescription(desc);

        assert_equals(localConnection.currentLocalDescription, null, "test 1");
        assert_equals(localConnection.pendingLocalDescription.sdp, currentSDP, "test 2");
        assert_equals(localConnection.localDescription.sdp, currentSDP, "test 3");

        assert_equals(remoteConnection.currentRemoteDescription, null);
        assert_equals(remoteConnection.pendingRemoteDescription.sdp, currentSDP, "test 4");
        assert_equals(remoteConnection.remoteDescription.sdp, currentSDP, "test 5");

        return Promise.all([localDescriptionPromise, remoteDescriptionPromise]);
    }).then(() => {
        return remoteConnection.createAnswer();
    }).then((desc) => {
        assert_equals(localConnection.currentLocalDescription, null);
        assert_equals(localConnection.localDescription.sdp, localConnection.pendingLocalDescription.sdp, "test 7");

        localConnection.setRemoteDescription(desc);

        assert_equals(localConnection.currentLocalDescription.sdp, localConnection.localDescription.sdp, "test 8");
        assert_equals(localConnection.pendingLocalDescription, null);

        assert_equals(remoteConnection.currentRemoteDescription, null);
        assert_equals(remoteConnection.pendingRemoteDescription.sdp, remoteConnection.remoteDescription.sdp, "test 10");

        promise = remoteConnection.setLocalDescription(desc);

        assert_equals(remoteConnection.pendingRemoteDescription, null);
        return promise;
    }).then(() => {
        desc = remoteConnection.currentRemoteDescription;

        localConnection.createDataChannel("test");

        assert_equals(localConnection.currentLocalDescription.sdp, localConnection.localDescription.sdp, "test 14");
        assert_equals(localConnection.pendingLocalDescription, null);

        assert_equals(remoteConnection.currentRemoteDescription.sdp, remoteConnection.remoteDescription.sdp, "test 16");
        assert_equals(remoteConnection.pendingRemoteDescription, null);
    });
}, "description getters when changing description from video to video & data channel");
        </script>
    </body>
</html>