Without that commit script_name always become '/', which
results in paths like //posts/1 instead of /posts/1

In order to run Engine as standalone application, you will need
Rails::Application instance in the same namespace that engine
one. It's very important to leave _railtie bound to whatever
used "namespace" method first.

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

We can't assign @view_context_class here, define super() in test instead if we want to avoid warnings.

'The scheme name consists of a letter followed by any combination of letters, digits, and the plus ("+"), period ("."), or hyphen ("-") characters; and is terminated by a colon (":").'