Test nw-encode-001.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>
<p:with-input>
<doc/>
</p:with-input>
</p:encode>
</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="c:data">Root element is not 'c:data'.</s:assert>
</s:rule>
</s:pattern>
<s:pattern>
<s:rule context="/c:data">
<s:assert test="@encoding = 'base64'">The encoding is incorrect.</s:assert>
<s:assert test="@content-type = 'application/xml'">The content-type is incorrect.</s:assert>
<s:assert test="starts-with(., 'PD94bW')">Encoded data is incorrect.</s:assert>
</s:rule>
</s:pattern>
</s:schema>
Test the p:encode step.