chromium/third_party/blink/web_tests/svg/text/textpath-startoffset-expected.html

<!DOCTYPE html>
<svg xmlns="http://www.w3.org/2000/svg" font-size="100px">
  <path id="path" d="M10,100h400" fill="none" stroke="blue"/>
  <text fill="green" font-family="Arial" x="0.5"><textPath xlink:href="#path">Test</textPath></text>
</svg>