test_bug1175913.html

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<html>

<head>

  <title>Test hide/show events on event listener changes</title>

  <link rel="stylesheet" type="text/css"

        href="chrome://mochikit/content/tests/SimpleTest/test.css" />

  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

  <script type="application/javascript"

          src="../common.js"></script>

  <script type="application/javascript"

          src="../role.js"></script>

  <script type="application/javascript"

          src="../events.js"></script>

  <script type="application/javascript">

    function dummyListener() {}

    async function doTest() {

      is(getAccessible("parent", null, null, DONOTFAIL_IF_NO_ACC), null, "Check that parent is not accessible.");

      is(getAccessible("child", null, null, DONOTFAIL_IF_NO_ACC), null, "Check that child is not accessible.");

      let shown = waitForEvent(EVENT_SHOW, getNode("parent"));

      getNode("parent").addEventListener("click", dummyListener);

      await shown;

      const tree = { TEXT: [] };

      testAccessibleTree("parent", tree);

      let unexpected = new UnexpectedEvents([[EVENT_HIDE, getNode("parent")]]);

      getNode("parent").removeEventListener("click", dummyListener);

      await unexpected.flush();

      unexpected.stop();

      ok(getAccessible("parent", null, null, DONOTFAIL_IF_NO_ACC),

         "Parent stays accessible after click event listener is removed");

      ok(!getAccessible("child", null, null, DONOTFAIL_IF_NO_ACC),

         "Child stays inaccessible");

      SimpleTest.finish();

    SimpleTest.waitForExplicitFinish();

    addA11yLoadEvent(doTest);

  </script>

</head>

<body>

  <a target="_blank"

     href="https://bugzilla.mozilla.org/show_bug.cgi?id=1175913"

     title="Crash in mozilla::a11y::DocAccessibleParent::RemoveAccessible(ProxyAccessible* aAccessible)">

    Mozilla Bug 1175913

  </a>

  <p id="display"></p>

  <div id="content" style="display: none"></div>

  <pre id="test">

  </pre>

  <span id="parent">

      <span id="child">

      </span>

  </span>

</body>

</html>