code: def test_init(self):
      data = Reader().read("./tests/graph_data.txt", sep=" ")
      gmd = GraphModality(data=data)
  
      self.assertEqual(len(gmd.raw_data), 7)
  
file_path: cornac/tests/cornac/data/test_graph.py
imports: import unittest
  import numpy
  from cornac.data import GraphModality
  from cornac.data import Reader
  from collections import OrderedDict
label_desc: Use image node_id 1 for calling the TestGraphModality obj's underlying member method code with example usage: obj.test_init() without return types