Add a failing test for a URL helper that was broken by a6b9ea2.

[jcoglan]

Between Rails 4.0.3 and 4.0.4 (and into 4.1.0), the routes in this test stopped producing the URL helper comment_path -- it became blog_comment_path instead. This was fixed in a6b9ea2 but the patch breaks the expected new_blog_post_comment_path helper, which was working until that patch landed.

[rafaelfranca]

cc @pixeltrix

[leods92]

This requires a first level resource (i.e. not nested) to set :shallow to true.
IMO that doesn't make sense; shouldn't shallow only be used with nested resources?
I hadn't had problems with nesting and shallow until this was introduced this "fix" in 4.0.6.
I wonder if there are more applications that broke with this.

Is setting :shallow to first-level resources really expected?

Thanks! :)

[pixeltrix]

@leods92 :shallow is a scope option so it can be set via the :shallow option to scope, resource & resources or by using the shallow helper. Whilst it isn't applied to the first level resource it is applied to any nested resources.

[leods92]

@pixeltrix Just to be clear: the expected behaviour is to set :shallow to first-level resources even though they won't change at all, isn't it? Not only should one set :shallow in a nested resource but also in its parent/first-level resource. If that's the expected behaviour, be aware that this commit breaks applications that had been working since version 3, it broke mine...

[pixeltrix]

@leods92 I've merged some fixes to shallow routes that haven't been released yet - can you test against the 4.1.6.rc1 release and if there's a regression from a previous release please file an issue.