Test nw-encode-003.xml is expected to pass.
<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" name="pipeline" version="3.0">
<p:output port="result"/>
<p:encode name="utf8" serialization="map{'method': 'text'}">
<p:with-input>
<p:inline content-type="text/plain">Copy ©</p:inline>
</p:with-input>
</p:encode>
<p:encode name="isolatin1" serialization="map{'method': 'text', 'encoding':'ISO-8859-1'}">
<p:with-input>
<p:inline content-type="text/plain">Copy ©</p:inline>
</p:with-input>
</p:encode>
<p:wrap-sequence wrapper="encoded">
<p:with-input pipe="@utf8 @isolatin1"/>
</p:wrap-sequence>
</p:declare-step>
<s:schema xmlns="http://www.w3.org/1999/xhtml" xmlns:s="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2">
<s:ns prefix="c" uri="http://www.w3.org/ns/xproc-step"/>
<s:pattern>
<s:rule context="/">
<s:assert test="encoded">Root element is not 'encoded'.</s:assert>
<s:assert test="count(encoded/c:data) = 2">Wrong number of c:data children.</s:assert>
</s:rule>
</s:pattern>
<s:pattern>
<s:rule context="/encoded/c:data[1]">
<s:assert test="@encoding = 'base64'">The c:data[1] encoding is incorrect.</s:assert>
<s:assert test="@content-type = 'text/plain'">The c:data[1] content-type is incorrect.</s:assert>
<s:assert test="not(@charset) or upper-case(@charset) = 'UTF-8'">The c:data[1] charset is incorrect.</s:assert>
<s:assert test=". = 'Q29weSDCqQ=='">Encoded c:data[1] data is incorrect.</s:assert>
</s:rule>
<s:rule context="/encoded/c:data[2]">
<s:assert test="@encoding = 'base64'">The c:data[2] encoding is incorrect.</s:assert>
<s:assert test="@content-type = 'text/plain'">The c:data[2] content-type is incorrect.</s:assert>
<s:assert test="upper-case(@charset) = 'ISO-8859-1'">The c:data[2] charset is incorrect.</s:assert>
<s:assert test=". = 'Q29weSCp'">Encoded c:data[2] data is incorrect.</s:assert>
</s:rule>
</s:pattern>
</s:schema>
Test the p:encode step.