Add a test to ensure url helpers are not action methods in ActionMailer.

railties/test/application/initializers/frameworks_test.rb

@@ -45,6 +45,25 @@ module ApplicationTests
       assert_equal "test.rails", ActionMailer::Base.default_url_options[:host]
     end
 
+    test "does not include url helpers as action methods" do
+      app_file "config/routes.rb", <<-RUBY
+        AppTemplate::Application.routes.draw do
+          get "/foo", :to => lambda { |env| [200, {}, []] }, :as => :foo
+        end
+      RUBY
+
+      app_file "app/mailers/foo.rb", <<-RUBY
+        class Foo < ActionMailer::Base
+          def notify
+          end
+        end
+      RUBY
+
+      require "#{app_path}/config/environment"
+      assert Foo.method_defined?(:foo_path)
+      assert_equal ["notify"], Foo.action_methods
+    end
+
     # AS
     test "if there's no config.active_support.bare, all of ActiveSupport is required" do
       use_frameworks []