offset-parent-positioned-and-inline.html

<html>
<body>
    <div style="position:relative; display:inline; border:1px solid black">Div
        <a id="anchor" style="border:1px solid red">Anchor</a>
    </div>
    <br><br>
    <span id="result">FAIL! This test has failed because the offsetParent of the anchor is coming back as null :-(</span>

    <script>
        if (window.testRunner)
            testRunner.dumpAsText();
        var anchor = document.getElementById("anchor");
        var result = document.getElementById("result");
        if (anchor.offsetParent)
            result.innerHTML = "Success! This test succeeded because the div is rightly recognized as the anchor's offsetParent :-)";
    </script>
</body>
</html>

chromium/third_party/blink/web_tests/fast/dom/offset-parent-positioned-and-inline.html