Tests p:document with a simple text document in an unsupported encoding.
Test ab-p-document019.xml is expected to fail with error code err:XD0060.
<p:declare-step xmlns:err="http://www.w3.org/ns/xproc-error" xmlns:p="http://www.w3.org/ns/xproc" version="3.0">
   <p:output port="result">
   <p:identity>
      <p:with-input>
         <p:document href="../documents/text-file-iso-8859-1.txt" content-type="text/plain; charset=unsupported">
      </p:with-input>
   </p:identity>
   <p:wrap-sequence wrapper="doc">
</p:declare-step>
adding @content-type on p:document
Fix namespace declarations
Change test with document-properties to map{xs:QName, item()}
More tests.
Some new tests.