diff --git a/railties/lib/test_help.rb b/railties/lib/test_help.rb
index a7be514cf0025661d27b4b8d0e9fe01c694cadbb..daa5201663c23050f4da8716d3bf244ba6efd202 100644
--- a/railties/lib/test_help.rb
+++ b/railties/lib/test_help.rb
@@ -4,6 +4,10 @@
 # so fixtures are loaded to the right database
 silence_warnings { RAILS_ENV = "test" }
 
+require 'test/unit'
+require 'active_support/test_case'
+require 'active_controller/test_case'
+require 'action_view/test_case'
 require 'action_controller/integration'
 require 'action_mailer/test_case' if defined?(ActionMailer)