Plugin RSpec "get" problems

Hello @gdpelican, I tried to run the babble controller specs and I got about 16 errors with the following form:

ActionController::UrlGenerationError:
No route matches {:action=>"destroy_post", :controller=>"babble/topics", :id=>"5979", :post_id=>"5727"}

Which were unexpected since the routeset was specified like this:

describe ::Babble::TopicsController do
  routes { ::Babble::Engine.routes }
end

as shown in the rspec docs for engine routes.

I must say I didn’t modify babble code and also I got the same errors with the specs of a plugin I’m writing.

What do you think could be the problem?