ZenTest ViewTestCase vs params


Here's a non-heinous view test, via the mental serenity that is ZenTest:

class FrogSpeciesViewTest < Test::Rails::ViewTestCase   def test_species_list     frog = frogs(:Ollotis_periglenes)     locals = {         :frog_genera => Species.find_all_by_genera('Bufo')         }     render :partial => 'partials/species_list', :locals => locals   end end

So far so good. But what if we want to pass params in? We can't seem to find a hook for them, and if we pass them as a local something blots them out. Any help?