How I test refraction in rspec

rewrite_macro.rb

# Macros I use for testing refraction redirections. It can be used thusly:
# it_should_permanently_redirect('http://loseitorloseit.test/stats', 'http://loseitorloseit.test/people')
# it_should_temporarily_redirect('http://loseitorloseit.test/stats', 'http://loseitorloseit.test/people')

module RewriteMacro
  module ExampleGroupMethods  
    def it_should_permanently_redirect(start_point, end_point)
      it "should permanently redirect #{start_point} to #{end_point}" do
        env = Rack::MockRequest.env_for(start_point, :method => 'get')
        app = mock('app')
        response = Refraction.new(app).call(env)
        response[0].should == 301
        response[1]['Location'].should == end_point
      end
    end
    
    def it_should_temporarily_redirect(start_point, end_point)
      it "should temporarily redirect #{start_point} to #{end_point}" do
        env = Rack::MockRequest.env_for(start_point, :method => 'get')
        app = mock('app')
        response = Refraction.new(app).call(env)
        response[0].should == 302
        response[1]['Location'].should == end_point
      end
    end
  end  

  def self.included(receiver)  
    receiver.extend ExampleGroupMethods
  end
end