Tests adding an attribute in no namespace to doc.
Test ab-add-attribute-001.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 match="/doc" attribute-name="att" attribute-value="5">
<p:with-input>
<doc/>
</p:with-input>
</p:add-attribute>
</p:declare-step>
<s:schema xmlns:s="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2">
<s:pattern>
<s:rule context="/">
<s:assert test="doc">The document root is not doc.</s:assert>
<s:assert test="doc/@att">There is not attribute "att" at doc.</s:assert>
<s:assert test="doc/@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.