TestApp.get should pass REQUEST_URI

Anonymous:

A common workaround for unicode and slashes encoded in the URL
is to have the wsgi app server pass REQUEST_URI and then deal
with it in middleware. It would be nice to
be able to test said middleware.
For now, a workaround is to wrap TestApp.get and always specify
extra_environ={'REQUEST_URI':url}.

Ian Bicking:

This may be hard to implement correctly, as the request construction
deconstructs the URL, and that's happening in WebOb. I don't think
the change would be appropriate for WebOb itself. Also quite a lot
of WSGI servers at this point don't set REQUEST_URI, so always
having it on doesn't seem like a good idea (having it off is more
representative of lowest-common-denominator WSGI servers).
An option to turn it on seems okay though (something you can pass
in when instantiating TestApp).

URL: https://bitbucket.org/ianb/webtest/issue/8/testappget-should-pass-request_uri

Start with TestApp.get and the TestApp instantiation options, then trace how request URLs are constructed before reaching WebOb. Define the option's expected behavior for REQUEST_URI and add tests showing it is opt-in, with completion requiring middleware to receive the supplied URL when enabled.