code: def helper_get_test_dir():
      curr_path = path.dirname(path.realpath(__file__))
      return path.join(path.dirname(path.dirname(curr_path)), "test")
  
file_path: vowpal_wabbit/python/tests/test_cb.py
imports: import pandas
  from os import path
  import vowpalwabbit
  import unittest
  import platform
  import math
  import re
label_desc: Use image node_id 1 for calling a global function with example usage: helper_get_test_dir() and returns: path