In Python 3, range() behaves like the old xrange().
The difference between range() and xrange() is usually not significant,
especially if the whole result is iterated over.
Convert xrange() usage to range() for small ranges.
Use modern idioms in a few other uses of range().
Reviewed-By: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>
The setUp/dearDown names are used in the unittest module, but there is no reason
to use them in non-`unittest` test cases.
Nose supports both styles (but mixing them can cause trouble when
calling super()'s methods).
Pytest only supports the new ones.
https://fedorahosted.org/freeipa/ticket/4610
Reviewed-By: Tomas Babej <tbabej@redhat.com>