gecko-dev/layout/reftests/table-background/table-row-opacity-dynamic-2...

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HTML

<!DOCTYPE HTML>
<html class="reftest-wait">
<title>Test for bug 1224251</title>
<style>
body { background: white; color: black }
table {
padding: 0;
border-spacing: 0;
border: none;
width: 15em;
}
tr {
background: rgba(0, 0, 255, 0.8);
}
td {
border: none;
}
</style>
<table>
<tr style="opacity: 0.8"><td>cell</td></tr>
</table>
<script>
var tr = document.getElementsByTagName("tr")[0];
// Not sure why, but to make this test fail without the patch, this has to
// be a setTimeout(0) rather than waiting for MozReftestInvalidate.
setTimeout(step1, 0);
function step1() {
tr.style.opacity = "0.8";
setTimeout(step2, 0);
}
function step2() {
tr.style.opacity = "0.8";
setTimeout(step3, 0);
}
function step3() {
tr.style.opacity = "";
document.documentElement.classList.remove("reftest-wait");
}
</script>