test_structuredclone_backref.html

Enable keyboard shortcuts

<!DOCTYPE HTML>

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

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

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1538622">Mozilla Bug 1538622</a>

<script>

  SimpleTest.waitForExplicitFinish();

  let o1 = new ImageData(25, 1),

      o2 = new ImageData(50, 1),

      o3 = new ImageData(75, 1),

      o4 = new ImageData(100, 1);

  let data = {

    img1: o1,

    img2: o2,

    img3: o3,

    img4: o4,

    img5: o4,

};

  window.addEventListener("message", windowMessage);

  window.postMessage(data);

  function windowMessage(e) {

    let dataCopied = e.data;

    ok(dataCopied.img5 instanceof ImageData, "backref ImageData should still be an ImageData");

    is(dataCopied.img5, dataCopied.img4, "backref ImageData should be the referenced one");

    SimpleTest.finish();

</script>