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Test Info:

<!DOCTYPE html>
<meta charset="utf-8">
<title>document.createCDATASection must throw in HTML documents</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
"use strict";
setup({ single_test: true });
assert_throws_dom("NotSupportedError", () => document.createCDATASection("foo"));
done();
</script>