diff --git a/.autotest b/.autotest
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+++ b/.autotest
@@ -0,0 +1,19 @@
+require 'autotest/redgreen'
+require 'autotest/timestamp'
+
+module Autotest::Growl
+  def self.growl title, msg, img, pri=0, sticky=""
+    system "growlnotify -n autotest -d #{title} -I #{img} -p #{pri} -m #{msg.inspect} #{title} #{sticky}"
+  end
+
+  Autotest.add_hook :ran_command do |at|
+    unless at.results.empty?
+      output = at.results.last.slice(/(\d+)\s.*examples?,\s(\d+)\s.*failures?/)
+      if output =~ /[1-9]\sfailures?/
+        growl "Tests", "#{output}", "~/.ruby_fail.png", 2, "-s"
+      else
+        growl "Tests", "#{output}", "~/.ruby_ok.png"
+      end
+    end
+  end
+end
\ No newline at end of file
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diff --git a/.ruby_ok.png b/.ruby_ok.png
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