These tests expect XPTY0004, which continues to be the case in XQ10/XP20.  However, for XQ30/XP30, they should now expect XPTY0117.

The expected type of the argument is xs:QName?, but an element has been passed.

Under the 3.1.5.2 Function Conversion Rules, 

1. Atomization is applied to the element, giving an xs:untypedAtomic.

2. The xs:untypedAtomic is cast to xs:QName.  Prior to XQ30, this was a type check error (XPTY0004).  However, in XQ30/XP30, the item is type xs:untypedAtomic and the xs:QName is namespace-sensitive, so type error [err:XPTY0117] is raised.

   <test-case name="LocalNameFromQNameFunc015">
      <description> Test function fn:local-name-from-QName. Error case - invalid parameter type (simple type) </description>
      <created by="Mike Rorke" on="2005-09-28"/>
      <environment ref="fsx"/>
      <test>fn:local-name-from-QName((//Folder)[1])</test>
      <result>
         <error code="XPTY0004"/>
      </result>
   </test-case>

   <test-case name="NamespaceURIFromQNameFunc015">
      <description> Test function fn:namespace-uri-from-QName. Error case - invalid parameter type (simple type) </description>
      <created by="Mike Rorke" on="2005-09-28"/>
      <environment ref="fsx"/>
      <test>fn:namespace-uri-from-QName((//Folder)[1])</test>
      <result>
         <error code="XPTY0004"/>
      </result>
   </test-case>