class ActionDispatch::Integration::Session

def process(method, path, parameters = nil, rack_environment = nil)
  if path =~ %r{://}
    location = URI.parse(path)
    https! URI::HTTPS === location if location.scheme
    host! location.host if location.host
    path = location.query ? "#{location.path}?#{location.query}" : location.path
  end
  unless ActionController::Base < ActionController::Testing
    ActionController::Base.class_eval do
      include ActionController::Testing
    end
  end
  env = {
    :method => method,
    :params => parameters,
    "SERVER_NAME"     => host.split(':')[0],
    "SERVER_PORT"     => (https? ? "443" : "80"),
    "HTTPS"           => https? ? "on" : "off",
    "rack.url_scheme" => https? ? "https" : "http",
    "REQUEST_URI"    => path,
    "HTTP_HOST"      => host,
    "REMOTE_ADDR"    => remote_addr,
    "CONTENT_TYPE"   => "application/x-www-form-urlencoded",
    "HTTP_ACCEPT"    => accept
  }
  session = Rack::Test::Session.new(_mock_session)
  (rack_environment || {}).each do |key, value|
    env[key] = value
  end
  # NOTE: rack-test v0.5 doesn't build a default uri correctly
  # Make sure requested path is always a full uri
  uri = URI.parse('/')
  uri.scheme ||= env['rack.url_scheme']
  uri.host   ||= env['SERVER_NAME']
  uri.port   ||= env['SERVER_PORT'].try(:to_i)
  uri += path
  session.request(uri.to_s, env)
  @request_count += 1
  @request  = ActionDispatch::Request.new(session.last_request.env)
  response = _mock_session.last_response
  @response = ActionDispatch::TestResponse.new(response.status, response.headers, response.body)
  @html_document = nil
  @controller = session.last_request.env['action_controller.instance']
  return response.status
end