The pipeline
<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:variable name="params" as="array(*)" select="array{1,2,3}"/>
<p:run name="run-fix">
<p:with-input href="../pipelines/invoked-arr.xpl"/>
<p:run-input port="source" primary="true">
<p:empty/>
</p:run-input>
<p:run-option name="parameters" select="$params"/>
<p:output port="result" primary="true"/>
</p:run>
</p:declare-step>
Schematron validation
<s:schema xmlns:err="http://www.w3.org/ns/xproc-error" xmlns:s="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2">
<s:ns prefix="fn" uri="http://www.w3.org/2005/xpath-functions"/>
<s:pattern>
<s:rule context="/">
<s:assert test="fn:array">The root element is not fn:array.</s:assert>
<s:assert test="count(fn:array/fn:number) = 3">Wrong number of items.</s:assert>
<s:assert test="fn:array/fn:number[1] = 1">First item is wrong.</s:assert>
<s:assert test="fn:array/fn:number[2] = 2">Second item is wrong.</s:assert>
<s:assert test="fn:array/fn:number[3] = 3">Third item is wrong.</s:assert>
</s:rule>
</s:pattern>
</s:schema>
