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tangled
Commit da7b468f authored by chrishtr@chromium.org's avatar chrishtr@chromium.org
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Add a performance test for attribute descendant selectors. 

BUG=352300
NOTRY=true

Review URL: https://codereview.chromium.org/199543004

git-svn-id: svn://svn.chromium.org/blink/trunk@169671 bbb929c8-8fbe-4397-9dbb-9b2b20218538
parent c65427e3
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third_party/WebKit/PerformanceTests/CSS/AttributeDescendantSelector.html 0 → 100644
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<!DOCTYPE html>
<html>
<head>
<script src="../resources/runner.js"></script>
<style>
[attr=root] [attr=child] {}
</style>
</head>
<body>
<div id="root"></div>
<script>
function addChildren(element, numChildren, idPrefix)
{
for (var i = 0; i < numChildren; i++) {
var child = document.createElement("div");
child.id = idPrefix + i;
element.appendChild(child);
}
}
function makeTree(element, depth, fanOut, idPrefix)
{
if (depth <= 0)
return;
addChildren(element, fanOut, idPrefix);
for (var child = element.firstChild; child.nextSibling; child = child.nextSibling) {
makeTree(child, depth - 1, fanOut, child.id);
}
if (child)
makeTree(child, depth - 1, fanOut, child.id);
}
var root = document.querySelector("#root");
makeTree(root, 6, 5, "child");
var child = document.querySelector("#child012341");
child.setAttribute("attr", "child");
var runFunction = function()
{
root.offsetHeight; // force recalc style
root.setAttribute("attr" , "root");
root.offsetHeight;
root.removeAttribute("attr");
}
PerfTestRunner.measureRunsPerSecond({run: runFunction});
</script>
</body>
</html>
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