def test_equal_1(self):
     self.assertEqual(reverse_list([]), [])
 def test_equal_2(self):
     self.assertEqual(reverse_list([1, 2, 3, 4]), [4, 3, 2, 1])
 def test_equal_3(self):
     self.assertEqual(reverse_list([2, 4, 5, 6]), [6, 5, 4, 2])