chromium/third_party/blink/web_tests/accessibility/label-for-control-hittest.html

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<script src="../resources/js-test.js"></script>
</head>
<body id="body">
<input type="checkbox" id="item"><label for="item">
This is a lot of repeated text that when a hit test is performed, will 
return the corresponding checkbox control, because this text is only a label.
This is a lot of repeated text that when a hit test is performed, will 
return the corresponding checkbox control, because this text is only a label.
This is a lot of repeated text that when a hit test is performed, will 
return the corresponding checkbox control, because this text is only a label.
This is a lot of repeated text that when a hit test is performed, will 
return the corresponding checkbox control, because this text is only a label.
This is a lot of repeated text that when a hit test is performed, will 
return the corresponding checkbox control, because this text is only a label.
</label>

<p id="description"></p>
<div id="console"></div>

<script>

    description("This tests that a hit test on a label of a control will return the control (instead of nothing).");

    if (window.accessibilityController) {

          var body = document.getElementById("body");
          body.focus();

          var control = accessibilityController.focusedElement.elementAtPoint(30, 100);

          shouldBe("control.role", "'AXRole: AXCheckBox'");
    }

</script>

</body>
</html>