Routing specs are marked by :type => :routing or if you have set config.infer_spec_type_from_file_location! by placing them in spec/routing.

Simple apps with nothing but standard RESTful routes won't get much value from routing specs, but they can provide significant value when used to specify customized routes, like vanity links, slugs, etc.

expect(:get => "/articles/2012/11/when-to-use-routing-specs").to route_to(
  :controller => "articles",
  :month => "2012-11",
  :slug => "when-to-use-routing-specs"
)

They are also valuable for routes that should not be available:

expect(:delete => "/accounts/37").not_to be_routable