      "\n",
      "\n",
      "def main():\n",
      "    test = TestBstValidate()\n",
      "    test.test_bst_validate_empty()\n",
      "    test.test_bst_validate()\n",
      "\n",
      "\n",
      "if __name__ == '__main__':\n",
      "    main()"
 
</s> remove     "    test.test_bst_validate_empty()\n",
 </s> add     "    test.assertRaises(TypeError, test.test_bst_validate_empty)\n", </s> remove     "    test.test_check_balance_empty()\n",
 </s> add     "    test.assertRaises(TypeError, test.test_check_balance_empty)\n", </s> remove     "    test.test_check_balance_empty()\n",
 </s> add     "    test.assertRaises(TypeError, test.test_check_balance_empty)\n", </s> remove     "    test.test_bst_successor_empty()\n",
 </s> add     "    test.assertRaises(TypeError, test.test_bst_successor_empty)\n", </s> remove     "    test.test_trie_remove_invalid()\n",
 </s> add     "    test.assertRaises(KeyError, test.test_trie_remove_invalid)\n",
    "    test.assertRaises(TypeError, test.test_bst_validate_empty)\n",
      "\n",
      "\n",
      "def main():\n",
      "    test = TestBstValidate()\n",
    "    test.assertRaises(TypeError, test.test_bst_validate_empty)\n",
      "    test.test_bst_validate()\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_validate/bst_validate_challenge.ipynb