testfix for python 3.8

[mhindery]

No description provided.

[mhindery]

This fixes the tests to succeed on Python 3.8. There was a new test added in #189 which has the same problems as the others where Python 3.8 has different ordering of attributes.

[peppelinux]

Thank you @mhindery, it was my turn to fix all the things ;)
9a1d06d

I don't love those huge if, too much hardcoded, and more many tests rely on pySAML2 security capabilities, these should be tested there and in djangosaml2 we should only test that the configuration being well loaded.

A good exercise for the future could be that to write less code as possibile , even in the unit tests.
See you on your next PR

[mhindery]

@peppelinux I agree that hardcoding the strings is not ideal, this is more to get things succeeding the way it is setup now so it doesn't block other things. That being said, there are some changes in here which should be changed and are not in master yet:

• mock is builtin in python 3, so you don't have to install it separately, and should import it as from unittest import mock
• The tox environments are currently not correct, they should match the environments listed above (just the django part)

[peppelinux]

Please do a PR on top of the current HEAD, I'll accept in a hurry. Thank @mhindery for wht you're doing