Tests p:use-when on (implicit) inlines.
Test ab-use-when-015.xml is expected to pass.
<p:declare-step xmlns:d="http://dummy" xmlns:p="http://www.w3.org/ns/xproc" name="pipeline" version="3.0">
<p:output port="result"/>
<p:identity>
<p:with-input>
<doc>
<par d:use-when="true()"/>
</doc>
</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:assert test="doc/par">The root element does not have a 'par' child.</s:assert>
<s:assert test="doc/par/@*:use-when">Element 'par' does not have @use-when.</s:assert>
</s:rule>
</s:pattern>
</s:schema>
New test.