unit testing class hierarchies

[Peter Otten]

Ulrich Eckhardt wrote:

> As you see, the code for test_base() is redundant, so the idea is to
> move it to a baseclass:
> 
> class TestBase(unittest.TestCase):
>      def test_base(self):
>          ...
> 
> class TestD1(TestBase):
>      def test_r(self):
>          ...
>      def test_s(self):
>          ...
> 
> class TestD2(TestBase):
>      def test_x(self):
>          ...
>      def test_y(self):
>          ...
> 
> The problem here is that TestBase is not a complete test case (just as
> class Base is not complete), but the unittest framework will still try
> to run it on its own. One way around this is to not derive class
> TestBase from unittest.

Another is to remove it from the global namespace with 

del TestBase