background-image-paint-invalidation.html

<!DOCTYPE html>
<body style="background: ; width: 800px; height: 2000px;">
</body>
<script src="../resources/text-based-repaint.js" type="text/javascript"></script>
<script>
// Tests that repaint when changing a document background image invalidates the whole document, not just the part that is visible on the screen.

function repaintTest() {
    document.body.style.background = 'url(../resources/ducky.png)';
}
runRepaintTest();
</script>

chromium/third_party/blink/web_tests/paint/invalidation/background/background-image-paint-invalidation.html