stub sub partials when testing partial with rspec

Hello all I prefer to use many partials. It makes my code more DRY Also I use rspec, and when I have to test partial with sub partials I have a problem.

if I stub render, then my partial will not be rendered. If i do not stub render it tries to render sub partial (and i don't need this)

Not very long googling did not bring the answer, so I made very dirty and IMHO dangerous function

def block_render_except unblocked       ActionView::Partials.class_eval do       public       def self.set_unblocked partial         @@unblocked = partial       end       alias_method :orig_render_partial,:render_partial       def render_partial(partial_path, object_assigns = nil, local_assigns = nil) #:nodoc:         if partial_path.to_s == @@unblocked           orig_render_partial(partial_path, object_assigns, local_assigns)         else           return " "         end       end     end     ActionView::Partials.set_unblocked unblocked end

usage:     block_render_except 'payments/list'     render(:partial => "payments/list")

The question is how sick am I, and is there more pretty solution of my problem? Also wanted to know how this approach to design view part of application is right?