      "    def test_merge_sort(self):\n",
      "        merge_sort = MergeSort()\n",
      "\n",
      "        print('None input')\n",
      "        assert_raises(TypeError, merge_sort.sort, None)\n",
      "\n",
      "        print('Empty input')\n",
      "        assert_equal(merge_sort.sort([]), [])\n",
      "\n",
      "        print('One element')\n",
 
</s>
    "        self.assertRaises(TypeError, merge_sort.sort, None)\n",
      "    def test_merge_sort(self):\n",
      "        merge_sort = MergeSort()\n",
      "\n",
      "        print('None input')\n",
    "        self.assertRaises(TypeError, merge_sort.sort, None)\n",
      "\n",
      "        print('Empty input')\n",
      "        assert_equal(merge_sort.sort([]), [])\n",
      "\n",
      "        print('One element')\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_solution.ipynb