      "\n",
      "def main():\n",
      "    test = TestBstSuccessor()\n",
      "    test.test_bst_successor()\n",
      "    test.test_bst_successor_empty()\n",
      "\n",
      "\n",
      "if __name__ == '__main__':\n",
      "    main()"
     ]
 
</s>
    "    test.assertRaises(TypeError, test.test_bst_successor_empty)\n",
      "\n",
      "def main():\n",
      "    test = TestBstSuccessor()\n",
      "    test.test_bst_successor()\n",
    "    test.assertRaises(TypeError, test.test_bst_successor_empty)\n",
      "\n",
      "\n",
      "if __name__ == '__main__':\n",
      "    main()"
     ]
keep keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for graphs_trees/ (#277)
graphs_trees/bst_successor/bst_successor_solution.ipynb