mozilla-release/layout/reftests/generated-content/dynamic-table-cell-indent.html

<!DOCTYPE html>
<html class="reftest-wait">
  <style>
    tr::before {
      content: "Some text";
      display: table-cell;
    }
    tr.i::before {
      text-indent: 50px;
    }
  </style>
  <table cellpadding="0">
    <tr></tr>
  </table>
  <script>
    onload = function() {
      var tr = document.querySelector("tr");
      // Make sure it's laid out
      window.w = tr.offsetWidth;
      document.querySelector("tr").className = "i";
      document.documentElement.className = "";
    }
  </script>
</html>