Webmock is an excellent ruby framework for solving this problem. My current app intereracts with both github and heroku and it's come in very handing for fillin

Webmock is an excellent ruby framework for solving this problem. My current app intereracts with both github and heroku and it's come in very handing for filling in what would otherwise be gaps. It's newer than fakeweb and is much better at letting you specify interactions on a per test basis rather than the entire suite.