code: def setUp(self):
      self.id_feature = {"a": np.zeros(10), "b": np.ones(10)}
  
file_path: cornac/tests/cornac/data/test_modality.py
imports: import unittest
  import numpy
  from collections import OrderedDict
  from cornac.data import FeatureModality
label_desc: Use image node_id 1 for calling the TestFeatureModality obj's underlying member method code with example usage: obj.setUp() without return types