How do you run test suite successfully? CI?

How do you successfully run the test suite? 

In order to run through rake, I've modified the gemspec to include some development_dependencies and fixed the Rakefile to work with modern versions of rake, but I'm still getting arbitrary and 401 errors on running the specs. Is there some ENV / config required? 

Also it would be very reassuring to have this run through a CI (e.g. travis).  
