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Test Info:

<html>
<head>
<script type="text/javascript">
var ta, f, tb, s, tc;
var i = 0;
// This test loops repeatedly through its "boom" functions. We place an upper
// bound on how many loops we'll allow, in case the repeated mutations/paints
// block the test harness from considering the test to be done.
var loopCount = 0;
const maxLoopCount = 20;
function boom1()
{
var r = document.body;
while(r.firstChild)
r.removeChild(r.firstChild);
ta = document.createTextNode("A \u06cc");
(document.body).appendChild(ta);
f = document.createElement("IFRAME");
f.style.height = "15em";
f.src = "data:text/html," + "Iteration " + ++i;
(document.body).appendChild(f);
tb = document.createTextNode(" B ");
(document.body).appendChild(tb);
s = document.createElement("span");
s.id = "s";
tc = document.createTextNode(" C ");
(document.body).appendChild(s);
s.appendChild(tc);
setTimeout(boom2, 10);
}
function boom2()
{
var w = document.createElement("style");
w.setAttribute("type", "text/css");
w.appendChild(document.createTextNode("body { column-gap: 1px; column-width: 1px; }"));
document.body.appendChild(w);
setTimeout(boom3, 10);
}
function boom3()
{
ta.data = " E " + ta.data;
document.body.removeChild(s);
if (++loopCount < maxLoopCount) {
setTimeout(boom1, 10);
}
}
</script>
</head>
<body onload="boom1();"></body>
</html>