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<!doctype html>
<meta charset=utf-8>
<title>Node.appendChild: inserting text and script nodes in a style element</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<style id="style"></style>
<body>
<script>
const happened = []
const style = document.getElementById("style");
test(() => {
const r1 = new Text("body {}");
const r2 = new Text("body {}");
const script = document.createElement("script");
script.textContent = `
happened.push(style.sheet.cssRules.length);
`;
const df = document.createDocumentFragment();
df.appendChild(r1);
df.appendChild(script);
df.appendChild(r2);
assert_array_equals(happened, []);
style.appendChild(df);
assert_array_equals(happened, [2]);
}, "All style rules appended to a <style> element are inserted and " +
"script-observable to scripts inserted in the `<style>` element, by the " +
"time scripts execute after DOM insertions.");
</script>
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