offer_profiling_test.rb

ENV["RAILS_ENV"] = "profiling"
require File.expand_path(File.dirname(__FILE__) + "/../../config/environment")
require File.expand_path(File.dirname(__FILE__) + "/../../vendor/rails/actionmailer/lib/actionmailer")
require 'test_help'

require 'ruby-prof'
require 'app/controllers/products_controller'

class ProductsController
  alias :orig_method :offer
  def offer
    if params[:profile] then
      params[:profile] = false
      result = RubyProf.profile do
        orig_method
      end
      
      measure_names = { RubyProf::MEMORY => 'memory', RubyProf::PROCESS_TIME => 'time' }

      printer = RubyProf::CallTreePrinter.new(result)
      printer.print(File.open("callgrind.offer_#{measure_names[RubyProf::measure_mode]}.out", 'w'))

      # printer = RubyProf::GraphHtmlPrinter.new(result)
      # printer.print(File.open("callgrind.offer_#{measure_names[RubyProf::measure_mode]}.html", 'w'))
    else
      orig_method
    end
  end
end

class OfferProfilingTest < ActionController::IntegrationTest
  def setup
    GC.disable
  end
  def teardown
    GC.enable
  end

  def test_index
    get 'products/offer?phonenumber=12345678901'
    profile :get, 'products/offer?phonenumber= 12345678901&profile=true'
  end

  def profile(method, url)
    RubyProf.measure_mode = RubyProf::PROCESS_TIME
    send(method, url)
    RubyProf.measure_mode = RubyProf::MEMORY
    send(method, url)
  end
end

profiling.rb

# Settings specified here will take precedence over those in config/environment.rb

# The production environment is meant for finished, "live" apps.
# Code is not reloaded between requests
config.cache_classes = true

# Use a different logger for distributed setups
# config.logger = SyslogLogger.new

# Full error reports are disabled and caching is turned on
config.action_controller.consider_all_requests_local = false
config.action_controller.perform_caching             = true
config.action_view.cache_template_loading            = true

# Use a different cache store in production
# config.cache_store = :mem_cache_store

# Enable serving of images, stylesheets, and javascripts from an asset server
# config.action_controller.asset_host                  = "http://assets.example.com"

# Disable delivery errors, bad email addresses will be ignored
# config.action_mailer.raise_delivery_errors = false