start to switch to rails 3.2.2

test/performance/browsing_test.rb

@@ -1,8 +1,11 @@
 require 'test_helper'
 require 'rails/performance_test_help'
 
-# Profiling results for each test method are written to tmp/performance.
 class BrowsingTest < ActionDispatch::PerformanceTest
+  # Refer to the documentation for all available options
+  # self.profile_options = { :runs => 5, :metrics => [:wall_time, :memory]
+  #                          :output => 'tmp/performance', :formats => [:flat] }
+
   def test_homepage
     get '/'
   end