code: def setUp(self):
      self.data = Reader().read("./tests/data.txt")
  
file_path: cornac/tests/cornac/eval_methods/test_ratio_split.py
imports: import unittest
  import itertools
  import random
  from cornac.eval_methods import RatioSplit
  from cornac.data import Reader
  from cornac.models import MF
  from cornac.metrics import MAE, Recall
label_desc: Use image node_id 1 for calling the TestRatioSplit obj's underlying member method code with example usage: obj.setUp() without return types