code: def setUp(self):
      super(OjaTestCase, self).setUp()
      self.data = np.array(
          [
              [2, 2],
              [1, 1],
              [4, 4],
              [5, 5],
          ]
      )
      self.result = np.array(
          [
              [2.83],
              [1.41],
              [5.66],
              [7.07],
          ]
      )
  
file_path: neupy/tests/algorithms/associative/test_oja.py
imports: import numpy
  from neupy import algorithms, init
  from neupy.exceptions import NotTrained
  from base import BaseTestCase
  from helpers import vectors_for_testing
label_desc: Use image node_id 1 for calling the OjaTestCase obj's underlying member method code with example usage: obj.setUp() without return types