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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-tables/paint/col-change-span-bg-invalidation-001.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html class="reftest-wait">
<script src="/common/reftest-wait.js"></script>
<script src="/common/rendering-utils.js"></script>
<link rel="author" title="Andreu Botella" href="abotella@igalia.com">
<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
<meta name="fuzzy" content="maxDifference=0-1; totalPixels=0-4400">
<meta name=assert content="Changing the span of a table column element will invalidate column backgrounds">
<style>
table {
width: 100px;
height: 100px;
border-spacing: 0;
}
.green {
background: green;
}
.red {
background: red;
}
</style>
<title>CSS table column span invalidation</title>
<script>
waitForAtLeastOneFrame().then(() => {
const changeSpanCol = document.getElementById("changeSpan");
changeSpanCol.setAttribute("span", "2");
takeScreenshot();
});
</script>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<table>
<col id="changeSpan" class="green">
<col class="green">
<col class="red">
<tr>
<td></td>
<td></td>
<td></td>
</tr>
</table>
</html>