Helpful macros for rspec controller specs

gistfile1.rb

module RackTestHelpers
  extend ActiveSupport::Concern

  module ClassMethods
    def self.define_action(action)
      define_method action do |*args, &block|
        options = args.extract_options!
        options[:http_method] = action
        options[:controller_method] = args[0]
        args[0] = [action.to_s.upcase, "#" + options[:controller_method].to_s].join(" ")
        args << options
        context(*args, &block)
      end
    end

    define_action :get
    define_action :post
    define_action :put
    define_action :delete
    define_action :head
    define_action :options

    def it_should_flash(type, message)
      it "should set the flash to \"#{message}\"" do
        do_request
        flash[type].should eq(message)
      end
    end

    def it_should_redirect_to(&block)
      it "should redirect to #{description}" do
        url = instance_eval(&block)
        do_request
        response.should redirect_to(url)
      end
    end

    def it_should_render_template(template)
      it "should render the #{template} template" do
        do_request
        response.should render_template(template)
      end
    end
  end

  def do_request
    params = if respond_to?(:params) then send(:params) else nil end # of story
    send(example.metadata[:http_method], example.metadata[:controller_method], params)
  end
end

RSpec.configure do |config|
  config.include RackTestHelpers, :type => :controller
end