def test_000_nominal(self): a = Attribute('stat') self.assertEqual(a.name, 'stat') a.name = 'stat2' self.assertEqual(a.name, 'stat2') self.assertIsNone(a.value) self.assertEqual(a.history, []) a.value = 1 self.assertEqual(a.value, 1) self.assertEqual(a.history, []) a.value = 2 self.assertEqual(a.value, 2) self.assertEqual(a.history, [1]) a.value = 3 self.assertEqual(a.value, 3) self.assertEqual(a.history, [1, 2]) self.assertEqual(a.history_mean(3), 1.0)