RTCPeerConnection-insertable-streams-errors.https.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /webrtc-encoded-transform/tentative/RTCPeerConnection-insertable-streams-errors.https.html - WPT Dashboard Interop Dashboard

<!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>