Compartmentalize test helper support

test/support/rails_app.rb

@@ -0,0 +1,21 @@
+class Foo < Rails::Application
+  if Rails::VERSION::MAJOR >= 4
+    config.eager_load = false
+    config.secret_key_base = 'abc123'
+    config.action_controller.perform_caching = true
+    config.active_support.test_order = :random
+    config.logger = Logger.new(nil)
+    ActionController::Base.cache_store = :memory_store
+  end
+end
+Foo.initialize!
+
+module TestHelper
+  Routes = ActionDispatch::Routing::RouteSet.new
+  Routes.draw do
+    get ':controller(/:action(/:id))'
+    get ':controller(/:action)'
+  end
+
+  ActionController::Base.send :include, Routes.url_helpers
+end