text: import unittest
  import cfg
  
  
  class TestParseConfig(unittest.TestCase):
      def test_read_json(self):
          config = cfg.read_json("test_files/golden_config.json")
          self.assertIn("distances_m", config)
          self.assertIn("base_station", config)
          self.assertIn("small_cell", config)
          self.assertIn("user", config)
          self.assertIn("speed_m/s", config["user"])
          self.assertIn("path_loss", config)
  
  
  if __name__ == '__main__':
      unittest.main()
  