LayoutTests/svg/text/selection-tripleclick.svg

<svg version="1.1" baseProfile="basic" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" id="svg-root" width="100%" height="100%" viewBox="0 0 160 120">
    <text id="line1" x="14" y="10" font-family="Arial" font-size="10" fill="black">foo bar baz</text>
    <text id="line2" x="14" y="20" font-family="Arial" font-size="10" fill="black">next line</text>
<script>
var line1 = document.getElementById("line1");
var center = document.rootElement.createSVGPoint();
var matrix = document.rootElement.getTransformToElement(line1);
var bbox = line1.getBBox();

center.x = bbox.x + bbox.width/2;
center.y = bbox.y + bbox.height/2;
center = center.matrixTransform(matrix);

if (eventSender) {
    eventSender.mouseMoveTo(center.x, center.y);
    eventSender.mouseDown();
    eventSender.mouseUp();
    eventSender.mouseDown();
    eventSender.mouseUp();
    eventSender.mouseDown();
    eventSender.mouseUp();
}

if (window.testRunner)
    window.testRunner.dumpSelectionRect();
</script>
</svg>