Let Devise play with both Rails 3.2 and Rails 4 for now

test/test_helper.rb

@@ -4,6 +4,13 @@ DEVISE_ORM = (ENV["DEVISE_ORM"] || :active_record).to_sym
 $:.unshift File.dirname(__FILE__)
 puts "\n==> Devise.orm = #{DEVISE_ORM.inspect}"
 
+module Devise
+  # Detection for minor differences between Rails 3.2 and 4 in tests.
+  def self.rails4?
+    Rails.version.start_with? '4'
+  end
+end
+
 require "rails_app/config/environment"
 require "rails/test_help"
 require "orm/#{DEVISE_ORM}"