Add rescue message to url_for method

Author: Ryan Clark

lib/rspec/rails/view_path_builder.rb

@@ -20,7 +20,9 @@ def initialize(route_set)
       #     view_path_builder.path_for({ :controller => 'posts', :action => 'delete' })
       #     # => nil
       def path_for(path_params)
-        url_for(path_params.merge(:only_path => true)) rescue nil
+        url_for(path_params.merge(:only_path => true))
+      rescue => e
+        e.message
       end
     end
   end