no-transferring.tentative.html

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This WPT test may be referenced by the following Test IDs:
- /wasm/serialization/memory/no-transferring.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<!-- Based on similar tests in html/infrastructure/safe-passing-of-structured-data/shared-array-buffers/ -->

<meta charset="utf-8">

<title>WebAssembly.Memory objects cannot be transferred</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script>

"use strict";

for (const shared of [false, true]) {

  const label = shared ? "shared" : "non-shared";

  const memoryDescriptor = shared

      ? { initial: 1, maximum: 1, shared: true }

      : { initial: 1 };

  test(() => {

    const memory = new WebAssembly.Memory(memoryDescriptor);

    assert_throws_dom("DataCloneError", () => window.postMessage(memory, "*", [memory]));

    assert_throws_dom("DataCloneError", () => window.postMessage("test", "*", [memory]));

  }, `Trying to transfer a ${label} WebAssembly.Memory to this window throws`);

  test(() => {

    const memory = new WebAssembly.Memory(memoryDescriptor);

    const worker = new Worker("resources/echo-worker.js");

    assert_throws_dom("DataCloneError", () => worker.postMessage(memory, [memory]));

    assert_throws_dom("DataCloneError", () => worker.postMessage("test", [memory]));

  }, `Trying to transfer a ${label} WebAssembly.Memory to a worker throws`);

  test(() => {

    const memory = new WebAssembly.Memory(memoryDescriptor);

    const channel = new MessageChannel();

    assert_throws_dom("DataCloneError", () => channel.port1.postMessage(memory, [memory]));

    assert_throws_dom("DataCloneError", () => channel.port1.postMessage("test", [memory]));

  }, `Trying to transfer a ${label} WebAssembly.Memory through a MessagePort throws`);

</script>