grid-item-change-column-repaint.html

<!DOCTYPE html>
<html>
<script src="../resources/text-based-repaint.js"></script>
<script>
function repaintTest()
{
    var gridItem = document.getElementsByClassName("sizedToGridArea")[0];
    gridItem.style.gridColumn = "3";
}
window.addEventListener("load", runRepaintAndPixelTest, false);
</script>
<link href="../../../fast/css-intrinsic-dimensions/resources/width-keyword-classes.css" rel="stylesheet">
<link href="../../../fast/css-grid-layout/resources/grid.css" rel="stylesheet">
<style>
body {
    font: 10px/1 Ahem;
}

.grid {
    grid-template-rows: 50px;
    grid-template-columns: minmax(100px, 180px) 100px minmax(50px, 100px);
}
.sizedToGridArea {
    background-color: purple;
}
</style>
<body>
<div>This test checks that changing the grid-column on a grid item properly repaint. The final grid item should be 50px * 50px. There should be no trace of the grid item at the old position.</div>
<div class="constrainedContainer">
    <div class="grid fit-content">
        <div class="sizedToGridArea"></div>
    </div>
</div>
</body>
</html>

chromium/third_party/blink/web_tests/paint/invalidation/css-grid-layout/grid-item-change-column-repaint.html