class_docstr: Wrapper around GCGraph, disabling its main functionalities to enable checking of the received values.
code: def __init__(self, nodes, edges):
      self.__nodes = nodes
      self.__edges = edges
      self.__nweights = dict()
  
imports: import sys
  import math
  import unittest
  import scipy
  import numpy
  from numpy.testing import assert_raises
  from medpy.graphcut.energy_label import boundary_stawiaski, boundary_difference_of_means, boundary_stawiaski_directed, regional_atlas
  from medpy.graphcut.graph import GCGraph
label_desc: Use image node_id 1 to create a new GCGraphTest object from inherited base classes: GCGraph with example: obj = GCGraphTest(nodes, edges)