@slide - I have a butt simple solution that just exits the tests if we're in OS X, but I doubt that fixes any PC problems. And its ugly.
@jessee - Did manage to get JUnit4 assumeThat to work as expected, but not getting the test to do the right thing. Found the wiki page to convert HudsonTestCase to JUnit4 (https://wiki.jenkins-ci.org/display/JENKINS/Unit+Test+JUnit4) - but no examples of what to do to replace setUp and tearDown calls. Just adding @Rule and a rule = new JenkinsRule(); just creates an initializationError message: Tests in error: initializationError(hudson.plugins.emailext.plugins.content.ScriptContentTest): Field rule must implement MethodRule
