chromium/third_party/blink/web_tests/svg/custom/focus-ring-text.svg

<svg xmlns="http://www.w3.org/2000/svg" width="200" height="100">
<text x="8" y="3" dy="1em" tabindex="2" style="font-size: 24px">ABC</text>
<script>
document.querySelector("text").focus();
</script>
</svg>