In the effort of decoupling Rails from unit specs, you can't have any…

… code that calls `Rails` (since it isn't available). In my unit specs that need Paperclip, I call `Paperclip::Railtie.insert` and all is good :)

lib/paperclip/railtie.rb

@@ -18,15 +18,15 @@ class Railtie < Rails::Railtie
 
   class Railtie
     def self.insert
-      Paperclip.options[:logger] = Rails.logger
-
       if defined?(ActiveRecord)
         ActiveRecord::Base.send(:include, Paperclip::Glue)
         Paperclip.options[:logger] = ActiveRecord::Base.logger
 
         ActiveRecord::ConnectionAdapters::AbstractAdapter.send(:include, Paperclip::Schema)
         ActiveRecord::ConnectionAdapters::Table.send(:include, Paperclip::Schema)
         ActiveRecord::ConnectionAdapters::TableDefinition.send(:include, Paperclip::Schema)
+      else
+        Paperclip.options[:logger] = Rails.logger
       end
 
       File.send(:include, Paperclip::Upfile)