test_encodedAudioChunk_crossCompartment.html

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<!DOCTYPE HTML>

<html>

<head>

  <title>EncodedAudioChunk with ArrayBuffers from another compartment</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

</head>

<body>

<script>

document.domain = "example.com";

const DATA = [1, 2, 3, 4, 5, 6, 7, 8];

function createBuffer(win) {

  const buffer = new win.ArrayBuffer(DATA.length);

  new win.Uint8Array(buffer).set(DATA);

  return buffer;

function checkChunk(chunk, expected, desc) {

  is(chunk.byteLength, expected.length, `${desc}: byteLength`);

  const out = new Uint8Array(chunk.byteLength);

  chunk.copyTo(out);

  isDeeply(Array.from(out), expected, `${desc}: data`);

function runTests(chunkCtor, bufferWin, desc) {

    const buffer = createBuffer(bufferWin);

    const chunk = new chunkCtor({

      type: "key",

      timestamp: 0,

      data: buffer,

      transfer: [buffer],

});

    ok(buffer.detached, `${desc}, ArrayBuffer data: buffer is detached`);

    checkChunk(chunk, DATA, `${desc}, ArrayBuffer data`);

    const buffer = createBuffer(bufferWin);

    const view = new bufferWin.Uint8Array(buffer, 2, 4);

    const chunk = new chunkCtor({

      type: "key",

      timestamp: 0,

      data: view,

      transfer: [buffer],

});

    ok(buffer.detached, `${desc}, ArrayBufferView data: buffer is detached`);

    checkChunk(chunk, DATA.slice(2, 6), `${desc}, ArrayBufferView data`);

    const buffer = createBuffer(bufferWin);

    const chunk = new chunkCtor({

      type: "key",

      timestamp: 0,

      data: new Uint8Array(DATA),

      transfer: [buffer],

});

    ok(buffer.detached, `${desc}, transfer only: buffer is detached`);

    checkChunk(chunk, DATA, `${desc}, transfer only`);

add_task(async function test_cross_compartment_transfer() {

  const iframe = document.createElement("iframe");

  iframe.src =

    "https://test1.example.com/tests/dom/media/webcodecs/test/file_crossCompartment_frame.html";

  const loaded = new Promise(resolve => (iframe.onload = resolve));

  document.body.appendChild(iframe);

  await loaded;

  const win = iframe.contentWindow;

ok(

    !(createBuffer(win) instanceof ArrayBuffer),

    "Buffer should come from the iframe's global"

);

  runTests(EncodedAudioChunk, win, "iframe buffer");

  runTests(win.EncodedAudioChunk, window, "iframe constructor");

});

</script>

</body>

</html>