def test_animals_abs_and_inheritance(self):
self.assertEqual(Animal.__bases__[0].__name__, "ABC")
self.assertTrue(len(list(Animal.__abstractmethods__)) > 0)
self.assertTrue("Animal" in [x.__name__ for x in Bird.__bases__])
self.assertTrue("ABC" in [x.__name__ for x in Bird.mro()])
self.assertTrue("Animal" in [x.__name__ for x in Mammal.__bases__])
self.assertTrue("ABC" in [x.__name__ for x in Mammal.mro()])
self.assertEqual(Mouse.__bases__[0].__name__, "Mammal")
self.assertEqual(Dog.__bases__[0].__name__, "Mammal")
self.assertEqual(Tiger.__bases__[0].__name__, "Mammal")
self.assertEqual(Cat.__bases__[0].__name__, "Mammal")
self.assertEqual(Owl.__bases__[0].__name__, "Bird")
self.assertEqual(Hen.__bases__[0].__name__, "Bird")
def __init__(self, name, weight, wing_size):
Bird.__init__(self, name, weight, wing_size)
def __init__(self, name, weight, wing_size, food_eaten=0):
Bird.__init__(self, name, weight, wing_size, food_eaten)