Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
run Rack applications in-process, without a server
Ruby
branch: master

Fetching latest commit…

Cannot retrieve the latest commit at this time

Failed to load latest commit information.
benchmark Compare performance of ShamRack vs running a Rack app in a separate p…
lib Release!
spec
.gitignore Add dependency on Rack. Link Gemfile to gemspec. Restrict RSpec version.
.rspec Create a ".rspec" file.
.travis.yml
CHANGES.md Rewrite change-log to note releases.
Gemfile
LICENSE Specify a license (the MIT license).
README.md Badgers.
Rakefile
sham_rack.gemspec Add dependency on Rack. Link Gemfile to gemspec. Restrict RSpec version.

README.md

ShamRack

Gem Version Build Status

ShamRack plumbs HTTP requests into Rack.

What's it for, again?

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. For instance, you could test your app using:

all without having to boot it in a server.

Installing it

gem install sham_rack

Using it

A simple inline application

require 'sham_rack'

ShamRack.at("www.greetings.com") do |env|
  ["200 OK", { "Content-type" => "text/plain" }, ["Hello, world!"]]
end

require 'open-uri'
open("http://www.greetings.com/").read            #=> "Hello, world!"

Sinatra integration

ShamRack.at("sinatra.xyz").sinatra do
  get "/hello/:subject" do
    "Hello, #{params[:subject]}"
  end
end

open("http://sinatra.xyz/hello/stranger").read  #=> "Hello, stranger"

Rackup support

ShamRack.at("rackup.xyz").rackup do
  use Some::Middleware
  use Some::Other::Middleware
  run MyApp.new
end

Any old Rack app

ShamRack.at("google.com").mount(my_google_stub)

General-purpose stubbing

@stub_app = ShamRack.at("stubbed.com").stub
@stub_app.register_resource("/greeting", "Hello, world!", "text/plain")

open("http://stubbed.com/greeting").read       #=> "Hello, world!"
@stub_app.last_request.path                    #=> "/greeting"

Or, just use Sinatra, as described above ... it's almost as succinct, and heaps more powerful.

When you're done testing

ShamRack.unmount_all

open("http://stubbed.com/greeting").read       #=> OpenURI::HTTPError

Supported HTTP client libraries

Net::HTTP and friends

ShamRack supports requests made using Net::HTTP, or any of the numerous APIs built on top of it:

uri = URI.parse("http://www.greetings.com/")
Net::HTTP.get_response(uri).body                      #=> "Hello, world!"

require 'open-uri'
open("http://www.greetings.com/").read                #=> "Hello, world!"

require 'restclient'
RestClient.get("http://www.greetings.com/").to_s      #=> "Hello, world!"

require 'mechanize'
Mechanize.new.get("http://www.greetings.com/").body   #=> "Hello, world!"

Patron (experimental)

We've recently added support for Patron:

require 'sham_rack/patron'

patron = Patron::Session.new
patron.get("http://www.greetings.com/").body          #=> "Hello, world!"

What's the catch?

  • Your Rack request-handling code runs in the same Ruby VM, in fact the same Thread, as your request.

Thanks to

  • Blaine Cook for FakeWeb, which was an inspiration for ShamRack.
  • Perryn Fowler for his efforts plumbing Net::HTTP into ActionController::TestProcess.
  • Christian Neukirchen et al for the chewy goodness that is Rack.
Something went wrong with that request. Please try again.