accessible/tests/mochitest/actions/test_keys.html

<html>

<head>
  <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
  <title>Keyboard shortcuts tests</title>
  <link rel="stylesheet" type="text/css"
        href="chrome://mochikit/content/tests/SimpleTest/test.css" />

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

  <script type="application/javascript"
          src="../common.js"></script>

  <script type="application/javascript">
    function testAcessKey(aAccOrElmOrID, aKey)
    {
      var acc = getAccessible(aAccOrElmOrID);
      if (!acc)
        return;

      is(acc.accessKey, aKey,
         "Wrong keyboard shortcut on " + prettyName(aAccOrElmOrID));
    }

    function doTest()
    {
      testAcessKey("input1", "");
      testAcessKey("input2", MAC ? "⌃⌥b" : "Alt+Shift+b");
      testAcessKey("link", MAC ? "⌃⌥l" : "Alt+Shift+l");

      SimpleTest.finish();
    }

    SimpleTest.waitForExplicitFinish();
    addA11yLoadEvent(doTest);
  </script>

</head>

<body>

  <a target="_blank"
     href="https://bugzilla.mozilla.org/show_bug.cgi?id=381599"
     title="Inverse relations cache">
    Mozilla Bug 381599
  </a>
  <p id="display"></p>
  <div id="content" style="display: none"></div>
  <pre id="test">
  </pre>

  <label accesskey="a">
    <input id="input1"/>
  </label>
  <label accesskey="b" for="input2">
  <input id="input2"/>
  <a id="link" accesskey="l">link</a>
</body>
</html>