test/schematron/zvon3.sct

<schema xmlns="http://www.ascc.net/xml/schematron" >
     <pattern name="Attribute test">
          <rule context="CCC">
               <assert test="@name">attribute name is not present</assert>
               <report test="@name">attribute name is present</report>
          </rule>
     </pattern>
</schema>