Whois has been successfully tested against the following Ruby implementations:
An extensive test suite is available to verify the library works consistently across all implementations.
You can run the test suite yourself against the implementation you want to verify.
$ rake test
If you have RMV installed, you can also use one of the several test tasks available.
The test suite is created with RSpec.
Do you run any other Ruby platform or version? Are you experiencing any problem? Tell us in the discussion group.