Tests p:document to overwrite system content-type correctly.
Test ab-p-document005.xml is expected to pass.
<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" version="3.0">
   <p:output port="result">
   <p:identity>
      <p:with-input>
         <p:document href="../documents/ab-doc.bin" content-type="application/xml">
      </p:with-input>
   </p:identity>
</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="doc">The document root is not doc.</s:assert>
      </s:rule>
   </s:pattern>
</s:schema>
Added attribute 'queryBinding' to schematron's schema.
adding @content-type on p:document
Change test with document-properties to map{xs:QName, item()}
Some new tests.