The package renaming restores the older package names (which were also the
documented package names). This doesn't affect test discovery because the
module in question doesn't contain any tests.
Thanks to Carl for the design discussion.
The current auth backend code catches TypeError to detect backends that
do not support specified argumetnts. As a result, any TypeErrors raised
within the actual backend code are silenced.
In Python 2.7+ and 3.2+ this can be avoided by using inspect.getcallargs().
With this method, we can test whether arguments match the signature without
actually calling the function.
Thanks David Eyk for the report.
Removing a backend configured in AUTHENTICATION_BACKENDS should not
raise an exception for existing sessions, but should make already
logged-in users disconnect.
Thanks Bradley Ayers for the report.