I\'ve written several XMLUnit tests (that fit in to the JUnit framework) in groovy and can execute them easily on the command line as per the groovy doco but I don\'t quite unde
Since you're asking for the purposes of exposing the report to Jenkins/Hudson, I'm assuming you have a Maven/Ant/etc build that you're able to run. If that's true, the solution is simple.
First of all, there's practically no difference between Groovy and Java JUnit tests. So, all you need to do is add the Ant/Maven junit task/plugin to your build and have it execute your Groovy junit tests (just as you'd do if they were written in Java). That execution will create test reports. From there, you can simply configure your Hudson/Jenkins build to look at the directory where the test reports get created during the build process.