      "        print('None input')\n",
      "        assert_raises(TypeError, func, None)\n",
      "\n",
      "        print('Empty input')\n",
      "        assert_equal(func([]), [])\n",
      "\n",
      "        print('One element')\n",
      "        assert_equal(func([5]), [5])\n",
      "\n",
      "        print('Two or more elements')\n",
 
</s> remove     "        assert_equal(func([]), [])\n",
 </s> add     "        self.assertEqual(func([]), [])\n", </s> remove     "        assert_equal(merge_sort.sort([]), [])\n",
 </s> add     "        self.assertEqual(merge_sort.sort([]), [])\n", </s> remove     "        assert_equal(merge_sort.sort([]), [])\n",
 </s> add     "        self.assertEqual(merge_sort.sort([]), [])\n", </s> remove     "        assert_equal(quick_sort.sort([]), [])\n",
 </s> add     "        self.assertEqual(quick_sort.sort([]), [])\n", </s> remove     "        assert_equal(insertion_sort.sort([]), [])\n",
 </s> add     "        self.assertEqual(insertion_sort.sort([]), [])\n",
    "        self.assertEqual(func([]), [])\n",
      "        print('None input')\n",
      "        assert_raises(TypeError, func, None)\n",
      "\n",
      "        print('Empty input')\n",
    "        self.assertEqual(func([]), [])\n",
      "\n",
      "        print('One element')\n",
      "        assert_equal(func([5]), [5])\n",
      "\n",
      "        print('Two or more elements')\n",
keep keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for sorting_searching/ (#278) 
sorting_searching/selection_sort/selection_sort_challenge.ipynb