diff --git a/.autotest b/.autotest
new file mode 100644
index 0000000..f519128
--- /dev/null
+++ b/.autotest
@@ -0,0 +1,9 @@
+Autotest.add_hook :initialize do |at|
+  at.clear_mappings
+
+  at.add_mapping(%r{^test/.*_test\.rb$})              {|f, _| [f] }
+  at.add_mapping(%r{^lib/factory_girl/(.*)\.rb$})     {|_, m| ["test/#{m[1]}_test.rb", 
+                                                               "test/integration_test.rb"] }
+  at.add_mapping(%r{^test/(test_helper|models)\.rb$}) { at.files_matching %r{^test/.*_test\.rb$} }
+  at.add_mapping(%r{^lib/.*\.rb$})                    { at.files_matching %r{^test/.*_test\.rb$} }
+end