<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>Testing erroneous setLocalDescription calls</title>
        <script src="../../resources/testharness.js"></script>
        <script src="../../resources/testharnessreport.js"></script>
    </head>
    <body>
        <script>
function badifyAnswer(answer)
{
    return {type: answer.type, sdp: answer.sdp.replace("v=0", "v")};
}

promise_test((test) => {
    var pc1 = new RTCPeerConnection;
    var pc2 = new RTCPeerConnection;
    var badAnswer;

    pc1.addTransceiver("video");
    return pc1.createOffer().then((offer) => {
        return pc1.setLocalDescription(offer);
    }).then(() => {
        return pc2.setRemoteDescription(pc1.localDescription);
    }).then(() => {
        return pc2.createAnswer();
    }).then((answer) => {
        badAnswer = badifyAnswer(answer);
        return pc2.setLocalDescription(badAnswer);
    }).then(assert_unreached, (e) => {
        assert_equals(e.message, "Expect line: v=");
        return pc2.setLocalDescription(badAnswer).then(assert_unreached, (e) => {
            assert_equals(e.message, "Expect line: v=");
        });
    });
}, "Testing calling twice setLocalDescription with a bad SDP");
        </script>
    </body>
</html>