The test contains this

<?xml version="1.0"?>
<arquillian xmlns="http://jboss.com/arquillian"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tomcat6="urn:arq:org.jboss.arquillian.container.tomcat.embedded_6">

<tomcat6:container>
<!-- unpackArchive must be true if using the Weld Servlet module -->
<tomcat6:unpackArchive>true</tomcat6:unpackArchive>
</tomcat6:container>

</arquillian>

but the docs don't!