<!DOCTYPE html>
<div id="log"></div>
<script src='../resources/testharness.js'></script>
<script src='../resources/testharnessreport.js'></script>
<script>
function log(msg)
{
    document.getElementById("log").innerHTML += msg + "<br>";
}

function printMethodError(method, target)
{
    try {
        method.call(target);
        assert_unreached();
    } catch(e) {
         log(e);
    }
}

function printPromiseMethodError(method, target)
{
    return method.call(target).then(assert_unreached, (e) => {
         log("Promise rejected with: " + e);
    });
}

function printGetterError(object, getterName, target)
{
    const property = Object.getOwnPropertyDescriptor(Object.getPrototypeOf(object), getterName);
    if (property  === undefined) {
        log(object + " has no property named " + getterName);
        return;
    }
    printMethodError(property.get, target);
}

promise_test(function(test) {
    // This test prints exceptions to check the format of their messages.

    var pc = new RTCPeerConnection();
    var candidate = new RTCIceCandidate({ candidate: "foo", sdpMid: "bar" });

    var results = [
        printPromiseMethodError(pc.createOffer, candidate),
        printPromiseMethodError(pc.createAnswer, candidate),
        printPromiseMethodError(pc.setLocalDescription, candidate),
        printPromiseMethodError(pc.setRemoteDescription, candidate),
        printPromiseMethodError(pc.addIceCandidate, candidate),

        printGetterError(pc, "localDescription", candidate),
        printGetterError(pc, "currentLocalDescription", candidate),
        printGetterError(pc, "pendingLocalDescription", candidate),
        printGetterError(pc, "remoteDescription", candidate),
        printGetterError(pc, "currentRemoteDescription", candidate),
        printGetterError(pc, "pendingRemoteDescription", candidate),
        printGetterError(pc, "signalingState", candidate),
        printGetterError(pc, "iceGatheringState", candidate),
        printGetterError(pc, "iceConnectionState", candidate),
        printGetterError(pc, "connectionState", candidate),
        printGetterError(pc, "canTrickleIceCandidates", candidate),
        printGetterError(pc, "defaultIceServers", candidate),

        printMethodError(pc.getConfiguration, candidate),
        printMethodError(pc.setConfiguration, candidate),
        printMethodError(pc.close, candidate),

        printGetterError(pc, "onnegotiationneeded", candidate),
        printGetterError(pc, "onicecandidate", candidate),
        printGetterError(pc, "onicecandidateerror", candidate),
        printGetterError(pc, "onsignalingstatechange", candidate),
        printGetterError(pc, "oniceconnectionstatechange", candidate),
        printGetterError(pc, "onicegatheringstatechange", candidate),
        printGetterError(pc, "onconnectionstatechange", candidate),
    ];
    return Promise.all(results);
}, "Exercising TypeError messages in RTCPeerConnection");
</script>