added open id support via omniauth

test/omniauth/url_helpers_test.rb

@@ -34,4 +34,9 @@ class OmniAuthRoutesTest < ActionController::TestCase
       @controller.omniauth_authorize_path(:user, :github)
     end
   end
+
+  test 'should generate authorization path with params' do
+    assert_match "/users/auth/open_id?openid_url=http%3A%2F%2Fyahoo.com", 
+                  @controller.omniauth_authorize_path(:user, :open_id, :openid_url => "http://yahoo.com")
+  end
 end