Create a self contained Rack server for use with unit tests

rack_mini_server.rb

module Rack::MiniServer

  def start
    @server_pid = fork do
      puts "start forking ..."
      Rack::Handler::WEBrick.run(
        Rack::ShowExceptions.new(Rack::Lint.new(self.new)), :Port => 9292) do |server|
        ['INT', 'TERM'].each{ |signal| trap(signal){ puts "shutting down"; server.shutdown} }    
      end
    end
    sleep 2
  end

  def stop
    Process.kill('INT',@server_pid)
  end

end

class TestHelloWorld
  extend Rack::MiniServer

  def initialize
    super
    puts "server ready"
  end

  def call(env)
    [200, {"Content-Type" => "text/plain"}, ["Hello world!"]]
  end

end

require 'httpclient'

HelloWorld.start

client = HTTPClient.new
assert_equal "Hello World",client.get_content("http://localhost:9292/")

HelloWorld.stop