wait-for-update-001

Tests that cx:wait-for-update works. It relies on the fact that calling the time-of-day service only updates every 10 seconds, so it’s highly likely to have to wait a bit.

Test is expected to pass.

The pipeline

<p:declare-step xmlns:cx="http://xmlcalabash.com/ns/extensions"
                xmlns:p="http://www.w3.org/ns/xproc"
                xmlns:t="http://xproc.org/ns/testsuite/3.0" name="main" version="3.0">
   <p:import href="https://xmlcalabash.com/ext/library/wait-for-update.xpl"/>
   <p:import href="https://xmlcalabash.com/ext/library/pipeline-messages.xpl"/>
   <p:output port="result" sequence="true"/>
   <p:option name="WHOST"
             select="'http://localhost:8246'" static="true"/>
   <cx:wait-for-update name="wait"
                       href="{$WHOST}/service/time-of-day"/>
   <cx:pipeline-messages p:depends="wait" level="debug"/>
</p:declare-step>

Result

<cx:messages xmlns:cx="http://xmlcalabash.com/ns/extensions"
             xmlns:t="http://xproc.org/ns/testsuite/3.0">
   <cx:message date="2025-06-19T18:02:48X"
               level="DEBUG"
               message="Waiting for http://apache2/service/time-of-day to update..."/>
</cx:messages>

Schematron checks

<s:schema xmlns:s="http://purl.oclc.org/dsdl/schematron"
          xmlns:t="http://xproc.org/ns/testsuite/3.0" queryBinding="xslt2">
   <s:ns prefix="cx"
         uri="http://xmlcalabash.com/ns/extensions"/>
   <s:pattern>
      <s:rule context="/">
         <s:assert test="cx:messages">The root is wrong.</s:assert>
         <s:assert test="exists(cx:messages/cx:message             [@level = 'DEBUG' and starts-with(@message, 'Waiting for http:')])">Did not find waiting message.</s:assert>
      </s:rule>
   </s:pattern>
</s:schema>

Revision history

23 May 2025, Norm Tovey-Walsh: Added static options for web server host and port.
05 May 2025, Norm Tovey-Walsh: Created test.