ShamRack plumbs Net::HTTP directly into Rack, for quick and easy HTTP testing.

Well, it makes it easy to _stub out external (HTTP) services_, which is handy in development and testing environments, or when you want to _test your HTTP client code_.

You can also use it to _test your Rack application_ (or Sinatra, or Rails, or Merb) using a variety of HTTP client libraries, to check interoperability.