<!DOCTYPE html>
<meta charset="utf-8">
<title>SharedArrayBuffers cannot be transferred</title>
<link rel="help" href="https://html.spec.whatwg.org/#structuredclone">
<link rel="author" title="Domenic Denicola" href="mailto:d@domenic.me">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<script>
"use strict";

test(() => {
  const sab = new SharedArrayBuffer();
  assert_throws("DataCloneError", () => window.postMessage(sab, "*", [sab]));
  assert_throws("DataCloneError", () => window.postMessage("test", "*", [sab]));
}, "Trying to transfer a SharedArrayBuffer to this window throws");

test(() => {
  const sab = new SharedArrayBuffer();
  const worker = new Worker("../resources/echo-worker.js");
  assert_throws("DataCloneError", () => worker.postMessage(sab, [sab]));
  assert_throws("DataCloneError", () => worker.postMessage("test", [sab]));
}, "Trying to transfer a SharedArrayBuffer to a worker throws");

test(() => {
  const sab = new SharedArrayBuffer();
  const channel = new MessageChannel();
  assert_throws("DataCloneError", () => channel.port1.postMessage(sab, [sab]));
  assert_throws("DataCloneError", () => channel.port1.postMessage("test", [sab]));
}, "Trying to transfer a SharedArrayBuffer through a MessagePort throws");
</script>