LayoutTests/webrtc/createOfferAnswer.html - WebKit - Git at Google

 <!doctype html>
 <html>
     <head>
         <meta charset="utf-8">
         <title>Testing createOffer/createAnswer</title>
         <script src="../resources/testharness.js"></script>
         <script src="../resources/testharnessreport.js"></script>
     </head>
     <body>
         <script>

 var pc1 = new RTCPeerConnection();
 var pc1Offer;
 promise_test((test) => {
     pc1.addTransceiver("video");

     return pc1.createOffer().then((offer) => {
         pc1Offer = offer;
         assert_false(offer instanceof RTCSessionDescription);
     });
 }, "Ensuring that offer is a RTCSessionDescriptionInit");


 promise_test((test) => {
     var pc2 = new RTCPeerConnection();
     pc2.addTransceiver("video");

     return pc2.setRemoteDescription(pc1Offer).then(() => {
         return pc2.createAnswer();
     }).then((answer) => {
         assert_false(pc1Offer instanceof RTCSessionDescription);
         pc1Offer.sdp = "";
         answer.sdp = "";
     });
 }, "Ensuring that answer is a RTCSessionDescriptionInit");

         </script>
     </body>
 </html>
	<!doctype html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>Testing createOffer/createAnswer</title>
	<script src="../resources/testharness.js"></script>
	<script src="../resources/testharnessreport.js"></script>
	</head>
	<body>
	<script>

	var pc1 = new RTCPeerConnection();
	var pc1Offer;
	promise_test((test) => {
	pc1.addTransceiver("video");

	return pc1.createOffer().then((offer) => {
	pc1Offer = offer;
	assert_false(offer instanceof RTCSessionDescription);
	});
	}, "Ensuring that offer is a RTCSessionDescriptionInit");


	promise_test((test) => {
	var pc2 = new RTCPeerConnection();
	pc2.addTransceiver("video");

	return pc2.setRemoteDescription(pc1Offer).then(() => {
	return pc2.createAnswer();
	}).then((answer) => {
	assert_false(pc1Offer instanceof RTCSessionDescription);
	pc1Offer.sdp = "";
	answer.sdp = "";
	});
	}, "Ensuring that answer is a RTCSessionDescriptionInit");

	</script>
	</body>
	</html>