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<!DOCTYPE html>
<html>
<head>
<title>RTCPeerConnection Insertable Streams - Errors</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src=/resources/testdriver.js></script>
<script src=/resources/testdriver-vendor.js></script>
<script src='../../mediacapture-streams/permission-helper.js'></script>
<script src="../../webrtc/RTCPeerConnection-helper.js"></script>
<script src="./RTCPeerConnection-insertable-streams.js"></script>
</head>
<body>
<script>
promise_test(async t => {
const caller = new RTCPeerConnection({encodedInsertableStreams:true});
t.add_cleanup(() => caller.close());
const callee = new RTCPeerConnection();
t.add_cleanup(() => callee.close());
const stream = await navigator.mediaDevices.getUserMedia({video:true});
const track = stream.getTracks()[0];
t.add_cleanup(() => track.stop());
const sender = caller.addTrack(track)
const streams = sender.createEncodedStreams();
const transformer = new TransformStream({
transform(frame, controller) {
// Inserting the same frame twice will result in failure since the frame
// will be neutered after the first insertion is processed.
controller.enqueue(frame);
controller.enqueue(frame);
}
});
exchangeIceCandidates(caller, callee);
await exchangeOfferAnswer(caller, callee);
await promise_rejects_dom(
t, 'OperationError',
streams.readable.pipeThrough(transformer).pipeTo(streams.writable));
}, 'Enqueuing the same frame twice fails');
</script>
</body>
</html>
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