input-text-datalist-appearance.html

<!DOCTYPE html>
<link rel=author href="mailto:[email protected]">
<link rel=assert title="text inputs should show an indicator when they have a datalist.">
<link rel=mismatch href="input-text-focused-ref.html">
<link rel=assert title="Text inputs should have different appearance when focused if they have a datalist."

<input list=mydatalist>
<datalist id=mydatalist>
  <option>option</option>
</datalist>

<script>
document.querySelector('input').focus();
</script>

chromium/third_party/blink/web_tests/external/wpt/html/semantics/forms/the-datalist-element/input-text-datalist-appearance.html