-test-timer-on-rake-test--to-print-how-long-each-test-takes-to-run.patch

From 3786858be2d9ea56444fc0554a289a558d8bede9 Mon Sep 17 00:00:00 2001
From: Andreas Haller <[email protected]>
Date: Fri, 8 Oct 2010 11:39:17 +0200
Subject: [PATCH] `test_timer=on rake test` to print how long each test takes to run

---
 Rakefile            |    7 +++++++
 lib/test_timer.rb   |   40 ++++++++++++++++++++++++++++++++++++++++
 test/test_helper.rb |    7 +++++++
 3 files changed, 54 insertions(+), 0 deletions(-)
 create mode 100644 lib/test_timer.rb

diff --git a/Rakefile b/Rakefile
index f122f77..bc4c0e9 100644
--- a/Rakefile
+++ b/Rakefile
@@ -8,3 +8,10 @@ require 'rake/testtask'
 require 'rake/rdoctask'
 
 Pardy::Application.load_tasks
+
+# You can print out the time for each test to find slow tests like
+#   test_time=on rake test
+if(ENV["test_timer"]) 
+  require File.expand_path('../lib/test_timer', __FILE__)
+  Rake.application['test'].enhance { TestTimer.print_result; }
+end
diff --git a/lib/test_timer.rb b/lib/test_timer.rb
new file mode 100644
index 0000000..8c792eb
--- /dev/null
+++ b/lib/test_timer.rb
@@ -0,0 +1,40 @@
+require 'pstore'
+module TestTimer  
+  module TestCase
+    def self.included(klass)
+      klass.setup { TestTimer.start("#{self.class.name}::#{method_name}") }
+      klass.teardown { TestTimer.stop("#{self.class.name}::#{method_name}") }
+    end
+  end
+  
+  @@start = {}
+  @@result = PStore.new(Rails.root.join('tmp','test_timer_result.pstore'), true)  
+  
+  module_function  
+  def result
+    @@result
+  end
+  
+  def clear
+    result.transaction { result[:result] ||= {} }
+  end
+  
+  def print_result
+    result.transaction { 
+      # sorting by value
+      puts result[:result].sort {|a,b| a[1] <=> b[1]}
+    }
+  end
+  
+  def start(name)
+    @@start[name] = Time.now.to_f
+  end  
+
+  def stop(name)
+    time = Time.now.to_f - @@start[name]
+    result.transaction { result[:result][name] = time }
+  end
+  
+  # Clear
+  self.clear
+end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index d9c608e..33eb994 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -46,3 +46,10 @@ Dir[Rails.root.join *%w(test fixtures files *.html)].each{|file|
     )
 }
 
+# See Rakefile for explanation
+if(ENV["test_timer"]) 
+  require "test_timer"
+  class ActiveSupport::TestCase
+    include TestTimer::TestCase
+  end
+end
-- 
1.7.1.1+GitX

To print how long each of your tests takes to run call:
test_timer=on rake test