code: def test_select_dataset(self, sel_opt):
      conf = yaml.load(
          open(os.path.join("tests", "data", "config.yml"), "r")
      )
      conf["test_sets"] = {"test_test_set": {}}
      conf["training_sets"] = {"test_train_set": {}}
  
      tr_data = utils.select_dataset("training", conf)
      pr_data = utils.select_dataset("prediction", conf)
  
      self.assertEqual(tr_data, "test_train_set")
      self.assertEqual(pr_data, "test_test_set")
  
imports: import logging
  import os
  import unittest
  import yaml
  from unittest.mock import patch
  from ISR.utils import utils
label_desc: Use image node_id 18 for calling the UtilsClassTest obj's underlying member method code with example usage: obj.test_select_dataset(sel_opt) without return types