[bgaid]

Why not try out a hosted mac mini solution like https://macstadium.com or http://macminivault.com? Travis-CI does all of their OS X testing at MacStadium - http://www.macstadium.com/blog/how-travis-ci-halved-boot-tim...

[I work at MacStadium, fyi.]

We can help you setup firewalls and have your hosted/rented Mac mini appear as part of your network for your team to access from anywhere.