Its a dynamic error, if @content-type is not valid..
Test ab-http-request-116.xml is expected to fail with error code err:XD0079 [XProc, Core steps].
It requires the following features: p:http-request.
<p:declare-step xmlns:err="http://www.w3.org/ns/xproc-error" xmlns:p="http://www.w3.org/ns/xproc" version="3.0">
<p:option name="WHOST" select="'http://localhost:8246'" static="true"/>
<p:output port="result"/>
<p:http-request href="{$WHOST}/service/fixed-xml" parameters="map{'override-content-type' : 'surely-not-correct'}">
<p:with-input>
<p:empty/>
</p:with-input>
</p:http-request>
</p:declare-step>
Added static options for web server host and port.
Changed the value of the href option to an HTTP URI.
The value isn’t relevant to the test, but processors are allowed to reject
schemes other than http(s):.
Additional tests for p:http-request.