testing/web-platform/tests/html/infrastructure/safe-passing-of-structured-data/shared-array-buffers/no-transferring.html

   1 <!DOCTYPE html>
   2 <meta charset="utf-8">
   3 <title>SharedArrayBuffers cannot be transferred</title>
   4 <link rel="help" href="https://html.spec.whatwg.org/#structuredclone">
   5 <link rel="author" title="Domenic Denicola" href="mailto:d@domenic.me">
   6 <script src="/resources/testharness.js"></script>
   7 <script src="/resources/testharnessreport.js"></script>
   8
   9 <script>
  10 "use strict";
  11
  12 test(() => {
  13   const sab = new SharedArrayBuffer();
  14   assert_throws("DataCloneError", () => window.postMessage(sab, "*", [sab]));
  15   assert_throws("DataCloneError", () => window.postMessage("test", "*", [sab]));
  16 }, "Trying to transfer a SharedArrayBuffer to this window throws");
  17
  18 test(() => {
  19   const sab = new SharedArrayBuffer();
  20   const worker = new Worker("../resources/echo-worker.js");
  21   assert_throws("DataCloneError", () => worker.postMessage(sab, [sab]));
  22   assert_throws("DataCloneError", () => worker.postMessage("test", [sab]));
  23 }, "Trying to transfer a SharedArrayBuffer to a worker throws");
  24
  25 test(() => {
  26   const sab = new SharedArrayBuffer();
  27   const channel = new MessageChannel();
  28   assert_throws("DataCloneError", () => channel.port1.postMessage(sab, [sab]));
  29   assert_throws("DataCloneError", () => channel.port1.postMessage("test", [sab]));
  30 }, "Trying to transfer a SharedArrayBuffer through a MessagePort throws");
  31 </script>