def test_cat_dog1(self): self.assertEqual(cat_dog('catdog'), True)
def test_cat_dog10(self): self.assertEqual(cat_dog('catxdogxdogxcat'), True)
def test_cat_dog9(self): self.assertEqual(cat_dog(''), True)
def test_cat_dog8(self): self.assertEqual(cat_dog('c'), True)
def test_cat_dog6(self): self.assertEqual(cat_dog('cat'), False)
def test_cat_dog4(self): self.assertEqual(cat_dog('1cat1cadodog'), True)