Rails mailers live under "app/models" even though they have some controller-like responsibilities, and I stick the corresponding specs under "spec/models" In one of my mailers I use the kind of dynamic route generation methods that Rails provides, things like foo_bar_path and foo_bar_url. What would I need to do to get access to those methods from within my mailer specs? I basically want to confirm the presence of a url in the generated body, something like: url = foo_bar_url(@foo, @bar) @mail.body.should match(url) Evidently I need to include some module or something, but as it''s all dynamically generated I have no idea where to begin looking. Oddly enough, the foo_bar_url _is_ defined within the context of the example (ie. I don''t get an "undefined method foo_bar_url in #<Spec::Rails::Example::ModelExampleGroup::Subclass_1:0x214146c>" exception), but what I _do_ get is: You have a nil object when you didn''t expect it! The error occurred while evaluating nil.foo_bar_url So the message is being sent to nil... not what I would have expected. Cheers, Wincent