<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  version="1.0"
>
  <xsl:output method="xml" encoding="UTF-8"
    cdata-section-elements="test"
  />

  <xsl:template match="/">
    <xsl:copy-of select="*" />
  </xsl:template>
</xsl:stylesheet>