          bst = Solution(root)
          node5 = bst.insert(5)
          node3 = bst.insert(3)
          node7 = bst.insert(7)
          assert_equal(bst.find_second_largest(), node7)
          print('Success: test_bst_second_largest')
  
  
  def main():
      test = TestBstSecondLargest()
 
</s> remove         assert_equal(bst.find_second_largest(), node20)
 </s> add         self.assertEqual(bst.find_second_largest(), node20) </s> remove         assert_raises(TypeError, bst.find_second_largest)
 </s> add         self.assertRaises(TypeError, bst.find_second_largest) </s> remove     "        assert_equal(bst.find_second_largest(), node7)\n",
 </s> add     "        self.assertEqual(bst.find_second_largest(), node7)\n", </s> remove     "        assert_equal(bst.find_second_largest(), node7)\n",
 </s> add     "        self.assertEqual(bst.find_second_largest(), node7)\n", </s> remove         assert_equal(result, root)
        assert_equal(result.left, node7)
        assert_equal(result.right, node2)
        assert_equal(result.left.left, node9)
        assert_equal(result.left.right, node6)
        assert_equal(result.right.left, node3)
        assert_equal(result.right.right, node1)
 </s> add         self.assertEqual(result, root)
        self.assertEqual(result.left, node7)
        self.assertEqual(result.right, node2)
        self.assertEqual(result.left.left, node9)
        self.assertEqual(result.left.right, node6)
        self.assertEqual(result.right.left, node3)
        self.assertEqual(result.right.right, node1)
        self.assertEqual(bst.find_second_largest(), node7)
          bst = Solution(root)
          node5 = bst.insert(5)
          node3 = bst.insert(3)
          node7 = bst.insert(7)
        self.assertEqual(bst.find_second_largest(), node7)
          print('Success: test_bst_second_largest')
  
  
  def main():
      test = TestBstSecondLargest()
keep keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for graphs_trees/ (#277) 
graphs_trees/bst_second_largest/test_bst_second_largest.py