rspec/rspec-rails — pull request #668 by alindeman (2013-02-24 15:04:51+00:00)
Title: Allow routing specs to access engine routes

I have a Rails Engine with routes defined in my app.
After upgrade all routing tests fail with _No route matches..._

I was trying to debug the MyEngine::Engine.routes.router and here's the diff
On latest rspec-rails `@ast` is always nil.

```diff
@@ -1,13 +1,14 @@
pry(#)> @routes.router
-=> # #"action_dispatch.request.path_parameters",
:request_class=>ActionDispatch::Request},
@params_key="action_dispatch.request.path_parameters",
@request_class=ActionDispatch::Request,
@routes=
- #
- #