test_blob_worker_crash.html

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<!--

  Any copyright is dedicated to the Public Domain.

  http://creativecommons.org/publicdomain/zero/1.0/

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<html>

<head>

  <title>Indexed Database Blob Worker Crash Test</title>

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

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

  <script type="text/javascript">

  /* import-globals-from helpers.js */

/*

   * This tests ensures that if the last live reference to a Blob is on the

   * worker and the database has already been shutdown, that there is no crash

   * when the owning page gets cleaned up which causes the termination of the

   * worker which in turn garbage collects during its shutdown.

   * We do the IndexedDB stuff in the iframe so we can kill it as part of our

   * test.  Doing it out here is no good.

*/

  function* testSteps()

    info("Open iframe, wait for it to do its IndexedDB stuff.");

    let iframe = document.getElementById("iframe1");

    window.addEventListener("message", grabEventAndContinueHandler);

    // Put it in a different origin to be safe

    iframe.src = // "http://example.org" +

                 window.location.pathname.replace(

                   "test_blob_worker_crash.html",

                   "blob_worker_crash_iframe.html");

    let event = yield unexpectedSuccessHandler;

    is(event.data.result, "ready", "worker initialized correctly");

    info("Trigger a GC to clean-up the iframe's main-thread IndexedDB");

    scheduleGC();

    yield undefined;

    info("Kill the iframe, forget about it, trigger a GC.");

    iframe.remove();

    iframe = null;

    scheduleGC();

    yield undefined;

    info("If we are still alive, then we win!");

    ok("Did not crash / trigger an assert!");

    finishTest();

  </script>

  <script type="text/javascript" src="helpers.js"></script>

</head>

<body onload="runTest();"></body>

  <iframe id="iframe1"></iframe>

</html>