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Test Info:

<!DOCTYPE html>
<meta charset="utf-8">
<!-- Based on similar tests in html/infrastructure/safe-passing-of-structured-data/shared-array-buffers/ -->
<title>RTCEncodedVideoFrame cannot cross agent clusters, service worker edition</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="../service-workers/service-worker/resources/test-helpers.sub.js"></script>
"use strict";
promise_test(async t => {
const caller = new RTCPeerConnection({encodedInsertableStreams:true});
t.add_cleanup(() => caller.close());
const callee = new RTCPeerConnection();
t.add_cleanup(() => callee.close());
await setMediaPermission("granted", ["microphone"]);
const stream = await navigator.mediaDevices.getUserMedia({audio:true});
const track = stream.getTracks()[0];
t.add_cleanup(() => track.stop());
const sender = caller.addTrack(track)
const streams = sender.createEncodedStreams();
const reader = streams.readable.getReader();
const writer = streams.writable.getWriter();
exchangeIceCandidates(caller, callee);
await exchangeOfferAnswer(caller, callee);
const result = await;
const scope = "resources/blank.html";
let reg = await service_worker_unregister_and_register(t, "resources/serviceworker-failure.js", scope);
t.add_cleanup(() => service_worker_unregister(t, scope));
await wait_for_state(t, reg.installing, "activated");
let iframe = await with_iframe(scope);
t.add_cleanup(() => iframe.remove());
const sw = iframe.contentWindow.navigator.serviceWorker;
let state = "start in window";
return new Promise(resolve => {
sw.onmessage = t.step_func(e => {
if ( === "start in worker") {
assert_equals(state, "start in window");
state = "we are expecting confirmation of an onmessageerror in the worker";
} else if ( === "onmessageerror was received in worker") {
assert_equals(state, "we are expecting confirmation of an onmessageerror in the worker");
} else {
assert_unreached("Got an unexpected message from the service worker: " +;