Live tests for all databases

[jonathan-s]

Because the actual command to the database is mocked out we don't get an end to end test, which is quite useful in a case like this.

To be able to get to an end to end testcase you'd need to make certain configurations for the databases themselves. Which leads to docker. We'd need to create some kind of testing container for the databases.

[ZuluPro]

Hi @jonathan-s
You removed Travis CI, but there were functional tests:
https://github.com/django-dbbackup/django-dbbackup/blob/master/dbbackup/tests/functional/test_commands.py

Maybe we can add test with M2M and FK,
But this is supposed to work with any configured backend.

[jonathan-s]

In travis the functional tests were only ever tested for sqlite from what I understand. Ideally the functional tests should be ran for all types of databases since it could technically fail for one database but suceed for another.