      "from nose.tools import assert_equal\n",
      "from nose.tools import raises\n",
      "\n",
      "\n",
      "class TestBstSuccessor(object):\n",
      "\n",
      "    @raises(Exception)\n",
      "    def test_bst_successor_empty(self):\n",
      "        bst_successor = BstSuccessor()\n",
      "        bst_successor.get_next(None)\n",
 
</s>
    "class TestBstSuccessor(unittest.TestCase):\n",
      "from nose.tools import assert_equal\n",
      "from nose.tools import raises\n",
      "\n",
      "\n",
    "class TestBstSuccessor(unittest.TestCase):\n",
      "\n",
      "    @raises(Exception)\n",
      "    def test_bst_successor_empty(self):\n",
      "        bst_successor = BstSuccessor()\n",
      "        bst_successor.get_next(None)\n",
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