Should_receive(:render).with(some_option) not working

Testing RSpec
1

Hello.

As some former posts already mentioned there is some difficulty to
test the render method when also checking for arguments:

http://rails-bestpractices.com/questions/17-test-the-render-method-in-a-controller-with-rspec
http://groups.google.com/group/rspec/browse_thread/thread/a458272b4f35110c/71d60bbd20d77b9e?lnk=gst&q=render#71d60bbd20d77b9e

Is there an official issue report to drag that problem?
Is there a workaround?

Best regards,
Kai