It would be nice to add Beego [1], as I'm currently learning Go from an ebook written by the author of the framework [2][3], and it would be nice to see how it performs. Thanks for your hard work!
I had not heard of Beego, but we'd love to accept a pull request with a Beego implementation of the tests. Perhaps you could put one together as an exercise while learning the language and framework? :) Sorry, I can't resist playing the "pull request" card.