Tests p:text-sort: Tests numeric sort, descending.
Test ab-text-sort-007.xml is expected to pass.
<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" xmlns:xs="http://www.w3.org/2001/XMLSchema" version="3.0">
   <p:output port="result">
   <p:text-sort sort-key="xs:int(tokenize(., '\s')[1])" order="descending">
      <p:with-input>
         <p:inline content-type="text/plain">90 C
9 A
1 D
10 B</p:inline>
      </p:with-input>
   </p:text-sort>
   <p:wrap-sequence wrapper="wrapper">
</p:declare-step>
<s:schema xmlns="http://www.w3.org/1999/xhtml" xmlns:s="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2">
   <s:pattern>
      <s:rule context="/">
         <s:assert test="wrapper">The root element is not wrapper.</s:assert>
         <s:assert test="wrapper/text()='90 C
10 B
9 A
1 D
'">Text is not sorted correctly.</s:assert>
      </s:rule>
   </s:pattern>
</s:schema>
Added attribute 'queryBinding' to schematron's schema.
Correct end-of-line handling.
Added declaration for prefix "xs".
Some tests for p:text-sort