Tests primary result can be empty.
Test ab-xslt-091.xml is expected to pass.
It requires the following features: xslt-3.
<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" version="3.0">
<p:output port="result"/>
<p:xslt version="3.0">
<p:with-input><doc xmlns=""/></p:with-input>
<p:with-input port="stylesheet">
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="3.0">
<xsl:template xmlns:xsl="http://www.w3.org/1999/XSL/Transform" match="/">
<xsl:result-document xmlns:xsl="http://www.w3.org/1999/XSL/Transform" href="secondary">
<doc xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns=""/>
</xsl:result-document>
</xsl:template>
</xsl:stylesheet>
</p:with-input>
</p:xslt>
<p:count/>
</p:declare-step>
<s:schema xmlns:s="http://purl.oclc.org/dsdl/schematron">
<s:ns prefix="c" uri="http://www.w3.org/ns/xproc-step"/>
<s:pattern>
<s:rule context="/">
<s:assert test="/c:result">The document root is not 'count'.</s:assert>
<s:assert test="/c:result/text()='0'">The text in count is not '0'.</s:assert>
</s:rule>
</s:pattern>
</s:schema>
Added tests for p:xslt with version="3.0".