XSpec using throw/catch

example.xsl

<xsl:transform version="3.0" expand-text="yes"
               xmlns:atop="http://www.tei-c.org/ns/atop"
               xmlns:xs="http://www.w3.org/2001/XMLSchema"
               xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:mode on-no-match="shallow-copy"/>

  <xsl:template match="no-error-code">
    <xsl:message terminate="yes"/>
  </xsl:template>

  <xsl:template match="error-code">
    <xsl:message terminate="yes" error-code="atop:error"/>
  </xsl:template>

</xsl:transform>

example.xspec

<xspec:description stylesheet="example.xsl"
                   xmlns:map="http://www.w3.org/2005/xpath-functions/map"
                   xmlns:atop="http://www.tei-c.org/ns/atop"
                   xmlns:xs="http://www.w3.org/2001/XMLSchema"
                   xmlns:xspec="http://www.jenitennison.com/xslt/xspec">

  <xspec:scenario label="Terminating w/o error code" catch="yes">
    <xspec:context>
      <no-error-code/>
    </xspec:context>
    <!-- When terminated with an error, $xspec:resuls is a map(*)
         rather than a node(). -->
    <xspec:expect test="map:contains($xspec:result, 'err')"/>
  </xspec:scenario>

  <xspec:scenario label="Terminating with error code" catch="yes">
    <xspec:context>
      <error-code/>
    </xspec:context>
    <xspec:expect test="$xspec:result?err?code eq QName('http://www.tei-c.org/ns/atop', 'error')"/>
  </xspec:scenario>
  
</xspec:description>