paint-invalidation-with-opacity.html

<!DOCTYPE html>
<div id="target" style="width: 100px; height: 100px; background: lightblue"></div>
<script src="resources/text-based-repaint.js"></script>
<script>
function repaintTest() {
    document.getElementById('target').style.opacity = 0.5;
}
runRepaintAndPixelTest();
</script>

chromium/third_party/blink/web_tests/paint/invalidation/paint-invalidation-with-opacity.html