unit testing class hierarchies

[Mark Lawrence]

On 02/10/2012 19:06, Demian Brecht wrote:
> Am I missing something? Is there something that wasn't answered by my reply
> about using mixins?
>
> from unittest import TestCase
>
> class SharedTestMixin(object):
>      def test_shared(self):
>          self.assertNotEquals('foo', 'bar')
>
> class TestA(TestCase, SharedTestMixin):
>      def test_a(self):
>          self.assertEquals('a', 'a')
>
> class TestB(TestCase, SharedTestMixin):
>      def test_b(self):
>          self.assertEquals('b', 'b')
>
> $ nosetests test.py -v
> test_a (test.TestA) ... ok
> test_shared (test.TestA) ... ok
> test_b (test.TestB) ... ok
> test_shared (test.TestB) ... ok
>
> ----------------------------------------------------------------------
> Ran 4 tests in 0.001s
>
> OK
>
> This seems to be a clear answer to the problem that solves the original
> requirements without introducing error-prone, non-obvious solutions.
>
>
>

Peter Otten's response is obviously vastly superior to yours, 4 tests in 
0.000s compared to your highly inefficient 4 tests in 0.001s :)

-- 
Cheers.

Mark Lawrence.