border-collapse-change-separate-to-collapse.html

<!DOCTYPE html>
<script src="../resources/text-based-repaint.js"></script>
<script>
function repaintTest() {
  document.getElementById('table').style.borderCollapse = 'collapse';
}
onload = runRepaintAndPixelTest;
</script>
<table id="table" style="border-collapse: separate">
  <tr>
    <td style="border: solid 2px yellow; width: 100px; height: 100px;"></td>
    <td style="border: solid 3px blue; width: 100px; height: 100px;"></td>
  </tr>
</table>

chromium/third_party/blink/web_tests/paint/invalidation/table/border-collapse-change-separate-to-collapse.html