class ActionController::TestRequest

def recycle!
  @formats = nil
  @env.delete_if { |k, v| k =~ /^(action_dispatch|rack)\.request/ }
  @env.delete_if { |k, v| k =~ /^action_dispatch\.rescue/ }
  @symbolized_path_params = nil
  @method = @request_method = nil
  @fullpath = @ip = @remote_ip = nil
  @env['action_dispatch.request.query_parameters'] = {}
end