relative-sized-content-with-resources.xhtml

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<script src="../resources/text-based-repaint.js"></script>
</head>
<body onload="runRepaintAndPixelTest()">
    <p>The svg area contained in the div element (red box), should fill out the whole area with a circle, which contains a radial gradient in its center</p>
    <div id="contentBox" style="width: 100px; height: 400px; border: 1px solid red;">
        <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="100%" height="100%">
            <defs>
                <radialGradient id="grad" cx="50%" cy="50%" r="40%" gradientUnits="userSpaceOnUse">
                    <stop offset="0" stop-color="black" />
                    <stop offset="1" stop-color="white" />
                </radialGradient>
             </defs>

             <circle cx="50%" cy="50%" r="40%" stroke="gray" fill="url(#grad)"/>
        </svg>
    </div>
    <script>
        function repaintTest() {
            document.getElementById("contentBox").style.setProperty("width", "400px");
        }
    </script>
</body>
</html>

chromium/third_party/blink/web_tests/paint/invalidation/svg/relative-sized-content-with-resources.xhtml