text: from unittest import TestCase
  from maxandmin import find_max_min
  
  class MaxMinTest(TestCase):
      """docstring for MaxMinTest"""
  
      def test_find_max_min_four(self):
          self.assertListEqual([1, 4],
                               find_max_min([1, 2, 3, 4]),
                               msg='should return [1,4] for [1, 2, 3, 4]')
  
      def test_find_max_min_one(self):
          self.assertListEqual([4, 6],
                               find_max_min([6, 4]),
                               msg='should return [4, 6] for [6, 4]')
  
      def test_find_max_min_two(self):
          self.assertListEqual([2, 78],
                               find_max_min([4, 66, 6, 44, 7, 78, 8, 68, 2]),
                               msg='should return [2, 78] for [4, 66, 6, 44, 7, 78, 8, 68, 2]')
  
      def test_find_max_min_three(self):
          self.assertListEqual([1, 4],
                               find_max_min([1, 2, 3, 4]),
                               msg='should return [1,4] for [1, 2, 3, 4]')
  
      def test_find_max_min_identity(self):
          self.assertListEqual([4],
                               find_max_min([4, 4, 4, 4]),
                               msg='Return the number of elements in the list in a new list if the `min` and `max` are equal')