When running rake spec, in merb_helpers I get the following error:
./specs/spec_helper.rb:11: uninitialized constant Merb::Test::MerbRspecControllerRedirect? (NameError?)
I did some digging this module and it is not defined in Merb or the merb_helpers plugin. What I found is that this exactly line is actually commented out in merb's spec_helper file. I think that this line should also be commented out inside this plugin. When I did that locally, specs ran fine (although I did receive some failing spec messages).