def test3Generations(self):
competitors = ['TitForTat', 'Naive']
generational = Generational('PrisonerMatrix', competitors, 2)
#override initial population
generational._queue = competitors
generational.start()
self.assertEqual(generational._queue.count('TitForTat'), 2)
self.assertEqual(generational._queue.count('Naive'), 4)
generational._next_generation()
self.assertEqual(generational._queue.count('TitForTat'), 4)
self.assertEqual(generational._queue.count('Naive'), 4)
