This test demonstrates and edge case. The user-defined step accepts zero or more documents on the source port, but has no default value called in a loop.
Test nw-empty-input-001.xml is expected to pass.
<p:declare-step xmlns:ex="http://example.com/ns/steps" xmlns:p="http://www.w3.org/ns/xproc" version="3.0">
<p:output port="result"/>
<p:declare-step type="ex:accepts-nothing">
<p:input port="source" primary="true" sequence="true"/>
<p:input port="stylesheet"/>
<p:output port="result"/>
<p:xslt template-name="main">
<p:with-input port="stylesheet" pipe="stylesheet"/>
</p:xslt>
</p:declare-step>
<p:for-each>
<p:with-input>
<p:inline>
<doc1/>
</p:inline>
<p:inline>
<doc2/>
</p:inline>
</p:with-input>
<ex:accepts-nothing>
<p:with-input port="source">
<p:empty/>
</p:with-input>
<p:with-input port="stylesheet">
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="3.0">
<xsl:template name="main">
<doc/>
</xsl:template>
</xsl:stylesheet>
</p:with-input>
</ex:accepts-nothing>
</p:for-each>
<p:wrap-sequence wrapper="wrapper"/>
</p:declare-step>
<s:schema 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="count(wrapper/doc) = 2">Wrapper doesn’t contain two documents.</s:assert>
</s:rule>
</s:pattern>
</s:schema>
Initial commit