maven-soap-ui plugin is capable of outputting surefire/junit style reports: http://www.soapui.org/Test-Automation/maven-2x.html
If using freestyle project in jenkins, can specify to look in report output directory and jenkins will register the tests (test results on project show them).
If using maven project, these tests do not show up.
There's good info here about setting maven,soapui tests and jenkins up
In comments at the bottom, you can see that jenkins will not recognize tests by default. Workaround is to use a freestyle project, but then we lose ability to have things like the 'perform maven release' button on the job.
Have investigated this, seems to be an issue with hudson.maven.reporters.SurefireArchiver needing to have every plugin registered that it will consider test reports from. Since it's hardcoded into the file, guess the simplest way to fix this is to patch it to include the soapui plugin.
Seems similar to this request for failsafe plugin: https://issues.jenkins-ci.org/browse/JENKINS-4229