Tests adding attribute with match's default value.
Test ab-add-attribute-016.xml is expected to pass.
<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" version="3.0">
<p:output port="result"/>
<p:add-attribute attribute-value="5" attribute-name="att">
<p:with-input>
<p:inline>
<doc1/>
<doc2/>
</p:inline>
</p:with-input>
</p:add-attribute>
<p:wrap-sequence wrapper="result"/>
</p:declare-step>
<s:schema xmlns:s="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2">
<s:pattern>
<s:rule context="/">
<s:assert test="result">The document root is not result.</s:assert>
<s:assert test="result/doc1/@att">There is not attribute "att" at doc1.</s:assert>
<s:assert test="result/doc1/@att=5">Value of attribute "att" is not 5.</s:assert>
<s:assert test="result/doc2/@att">There is not attribute "att" at doc2.</s:assert>
<s:assert test="result/doc2/@att=5">Value of attribute "att" is not 5.</s:assert>
</s:rule>
</s:pattern>
</s:schema>
Added attribute 'queryBinding' to schematron's schema.
Added new tests for p:add-attribute.