def test_equals(self): self.assertEqual(sort_it('bid, zag', 2), 'zag, bid')
def test_equals_2(self): self.assertEqual(sort_it('bill, bell, ball, bull', 2), 'ball, bell, bill, bull')
def test_equals_3(self): self.assertEqual(sort_it('cat, dog, eel, bee', 3), 'bee, dog, eel, cat')