module RSpec::Rails::HelperExampleGroup::InstanceMethods

def _controller_path 

def _controller_path
  example.example_group.describes.to_s.sub(/Helper/,'').underscore
end

def helper

mixed in, along with any of the built-in rails helpers.
Returns an instance of ActionView::Base with the helper being specified 
def helper
  _view.tap {|v| v.assign(_assigns)}
end