module ActionController::TestCase::Behavior

def build_request
  TestRequest.new
end

def build_request_uri(action, parameters)
  unless @request.env["PATH_INFO"]
    options = @controller.respond_to?(:url_options) ? @controller.__send__(:url_options).merge(parameters) : parameters
    options.update(
      :only_path => true,
      :action => action,
      :relative_url_root => nil,
      :_recall => @request.symbolized_path_parameters)
    url, query_string = @routes.url_for(options).split("?", 2)
    @request.env["SCRIPT_NAME"] = @controller.config.relative_url_root
    @request.env["PATH_INFO"] = url
    @request.env["QUERY_STRING"] = query_string || ""
  end
end

def build_response(klass)
  klass.new
end

def check_required_ivars
  # Sanity check for required instance variables so we can give an
  # understandable error message.
  [:@routes, :@controller, :@request, :@response].each do |iv_name|
    if !instance_variable_defined?(iv_name) || instance_variable_get(iv_name).nil?
      raise "#{iv_name} is nil: make sure you set it in your test's setup method."
    end
  end
end

def delete(action, *args)
  process(action, "DELETE", *args)
end

def get(action, *args)
  process(action, "GET", *args)
end

def head(action, *args)
  process(action, "HEAD", *args)
end

def html_format?(parameters)
  return true unless parameters.is_a?(Hash)
  Mime.fetch(parameters[:format]) { Mime['html'] }.html?
end

def paramify_values(hash_or_array_or_value)
  case hash_or_array_or_value
  when Hash
    Hash[hash_or_array_or_value.map{|key, value| [key, paramify_values(value)] }]
  when Array
    hash_or_array_or_value.map {|i| paramify_values(i)}
  when Rack::Test::UploadedFile, ActionDispatch::Http::UploadedFile
    hash_or_array_or_value
  else
    hash_or_array_or_value.to_param
  end
end

def patch(action, *args)
  process(action, "PATCH", *args)
end

def post(action, *args)
  process(action, "POST", *args)
end

def process(action, http_method = 'GET', *args)
  check_required_ivars
  if args.first.is_a?(String) && http_method != 'HEAD'
    @request.env['RAW_POST_DATA'] = args.shift
  end
  parameters, session, flash = args
  # Ensure that numbers and symbols passed as params are converted to
  # proper params, as is the case when engaging rack.
  parameters = paramify_values(parameters) if html_format?(parameters)
  @html_document = nil
  unless @controller.respond_to?(:recycle!)
    @controller.extend(Testing::Functional)
    @controller.class.class_eval { include Testing }
  end
  @request.recycle!
  @response.recycle!
  @controller.recycle!
  @request.env['REQUEST_METHOD'] = http_method
  parameters ||= {}
  controller_class_name = @controller.class.anonymous? ?
    "anonymous" :
    @controller.class.controller_path
  @request.assign_parameters(@routes, controller_class_name, action.to_s, parameters)
  @request.session.update(session) if session
  @request.flash.update(flash || {})
  @controller.request  = @request
  @controller.response = @response
  build_request_uri(action, parameters)
  name = @request.parameters[:action]
  @controller.recycle!
  @controller.process(name)
  if cookies = @request.env['action_dispatch.cookies']
    unless @response.committed?
      cookies.write(@response)
    end
  end
  @response.prepare!
  @assigns = @controller.respond_to?(:view_assigns) ? @controller.view_assigns : {}
  @request.session['flash'] = @request.flash.to_session_value
  @request.session.delete('flash') if @request.session['flash'].blank?
  @response
end

def put(action, *args)
  process(action, "PUT", *args)
end

def setup_controller_request_and_response
  @controller = nil unless defined? @controller
  response_klass = TestResponse
  if klass = self.class.controller_class
    if klass < ActionController::Live
      response_klass = LiveTestResponse
    end
    unless @controller
      begin
        @controller = klass.new
      rescue
        warn "could not construct controller #{klass}" if $VERBOSE
      end
    end
  end
  @request          = build_request
  @response         = build_response response_klass
  @response.request = @request
  if @controller
    @controller.request = @request
    @controller.params = {}
  end
end

def xml_http_request(request_method, action, parameters = nil, session = nil, flash = nil)
  @request.env['HTTP_X_REQUESTED_WITH'] = 'XMLHttpRequest'
  @request.env['HTTP_ACCEPT'] ||=  [Mime::JS, Mime::HTML, Mime::XML, 'text/xml', Mime::ALL].join(', ')
  __send__(request_method, action, parameters, session, flash).tap do
    @request.env.delete 'HTTP_X_REQUESTED_WITH'
    @request.env.delete 'HTTP_ACCEPT'
  end
end