      "        assert_equal(merge_sort.sort([5]), [5])\n",
      "\n",
      "        print('Two or more elements')\n",
      "        data = [5, 1, 7, 2, 6, -3, 5, 7, -1]\n",
      "        assert_equal(merge_sort.sort(data), sorted(data))\n",
      "\n",
      "        print('Success: test_merge_sort')\n",
      "\n",
      "\n",
      "def main():\n",
 
</s> remove     "        assert_equal(merge_sort.sort(data), sorted(data))\n",
 </s> add     "        self.assertEqual(merge_sort.sort(data), sorted(data))\n", </s> remove     "        assert_equal(insertion_sort.sort(data), sorted(data))\n",
 </s> add     "        self.assertEqual(insertion_sort.sort(data), sorted(data))\n", </s> remove     "        assert_equal(insertion_sort.sort(data), sorted(data))\n",
 </s> add     "        self.assertEqual(insertion_sort.sort(data), sorted(data))\n", </s> remove     "        assert_equal(quick_sort.sort(data), sorted(data))\n",
 </s> add     "        self.assertEqual(quick_sort.sort(data), sorted(data))\n", </s> remove     "        assert_equal(quick_sort.sort(data), sorted(data))\n",
 </s> add     "        self.assertEqual(quick_sort.sort(data), sorted(data))\n",
    "        self.assertEqual(merge_sort.sort(data), sorted(data))\n",
      "        assert_equal(merge_sort.sort([5]), [5])\n",
      "\n",
      "        print('Two or more elements')\n",
      "        data = [5, 1, 7, 2, 6, -3, 5, 7, -1]\n",
    "        self.assertEqual(merge_sort.sort(data), sorted(data))\n",
      "\n",
      "        print('Success: test_merge_sort')\n",
      "\n",
      "\n",
      "def main():\n",
keep keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for sorting_searching/ (#278) 
sorting_searching/merge_sort/merge_sort_challenge.ipynb