fixed failing tests and the proxy code that was relying on changed be…

…havior in action_controller/request.rb. all tests now pass on ruby 1.9.2 (woot)!

lib/oauth/request_proxy/action_controller_request.rb

@@ -1,5 +1,6 @@
 require 'active_support'
 require 'action_controller'
+require 'action_controller/request'
 require 'uri'
 
 module OAuth::RequestProxy
@@ -33,7 +34,8 @@ def parameters_for_signature
 
       unless options[:clobber_request]
         params << header_params.to_query
-        params << request.query_string unless request.query_string.blank?
+        params << request.query_string unless query_string_blank?
+
         if request.post? && request.content_type == Mime::Type.lookup("application/x-www-form-urlencoded")
           params << request.raw_post
         end

lib/oauth/request_proxy/base.rb

@@ -142,6 +142,14 @@ def oauth_header(options = {})
       "OAuth #{realm}#{header_params_str}"
     end
 
+    def query_string_blank?
+      if uri = request.request_uri
+        uri.split('?', 2)[1].nil?
+      else
+        request.query_string.blank?
+      end
+    end
+
   protected
 
     def header_params

test/test_action_controller_request_proxy.rb

@@ -1,3 +1,4 @@
+#gem 'actionpack', '2.2.3'
 gem 'actionpack', '2.3.8'
 require File.expand_path('../test_helper', __FILE__)