UI validation tests for Ruby run on deadlock.netbeans.org after every trunk build. It is a short suite just to check basic functionality like creating of a project. The test is located here
ide/test/qa-functional/src/org/netbeans/test/ruby/RubyValidation.java
Test failures are reported by emails with subject "Hudson build became unstable: trunk #" to broken_builds@netbeans.org mailing list. Detailed results can be found within artifacts:
To run Ruby UI validation suite from command line:
ant -f xtest/instance/build.xml -Dxtest.config=commit-validation-ruby runtests