chromium/third_party/blink/web_tests/css3/filters/effect-drop-shadow-negative-radius.html

<!DOCTYPE HTML>
<html lang="en">
<head>
    <title>drop-shadow with negative radius</title>
    <style type="text/css">
        #target {
            width: 100px;
            height: 100px;
            background-color: rgb(0, 255, 0);
            filter: drop-shadow(10px 10px -1px rgb(255, 0, 0));
        }
    </style>
</head>
<body>
<!--
    The following div has a drop-shadow associated with it which specifies a
    negative blur radius, which is wrong.
    Negative blur radius used to lead the embedder to time out, therefore this test will:

        PASS if the element is rendered alone, green, with no shadow
        FAIL otherwise
-->
    <div id="target"></div>
</body>
</html>