Tests cycles are correctly detected from within complex steps.
Test ab-err-xs0001-003.xml is expected to fail with error code err:XS0001
.
<p:declare-step xmlns:err="http://www.w3.org/ns/xproc-error" xmlns:p="http://www.w3.org/ns/xproc" name="pipeline" version="3.0">
<p:output port="result"/>
<p:group>
<p:identity>
<p:with-input pipe="@last"/>
</p:identity>
</p:group>
<p:wrap-sequence wrapper="result" name="last"/>
</p:declare-step>
New test.