LayoutTests/svg/custom/js-update-pattern.svg

<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN" "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
<svg width="450" height="450" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" onload="runRepaintTest()">
<script xlink:href="../../fast/repaint/resources/repaint.js"/>
<defs>
    <pattern patternUnits="userSpaceOnUse" id="Pattern" x="0" y="0" width="20" height="20">
        <rect x="5" y="5" width="10" height="10" fill="red" />
        <rect id="rect" x="10" y="10" width="10" height="10" fill="green" />
    </pattern>
</defs>

<script>
function repaintTest() {
    document.getElementById("Pattern").setAttribute("width", "10");
    document.getElementById("rect").setAttribute("x", "0");
}
</script>

<rect x="10" y="10" width="430" height="80" fill="url(#Pattern)" />
<rect x="10" y="100" width="430" height="80" fill="url(#Pattern)" />

</svg>