code: def execute_tests(seed_val="time"):
      """Executes the tests."""
      # Set seed value
      # pylint: disable=superfluous-parens
      # pylint: disable=no-member
      if seed_val is not None:
          if seed_val == "time":
              seed_val = int(time() * 10) % 100000
          elif not isinstance(seed_val, int):
              raise ValueError(
                  "seed_val should be 'time', an integer or None."
              )
          print("Setting random seed to %d." % (seed_val))
          np.random.seed(seed_val)
          random.seed(seed_val)
      # Run unit tests
      unittest.main()
  
file_path: dragonfly/dragonfly/utils/base_test_class.py
imports: from __future__ import print_function
  import numpy
  import random
  import sys
  from time import time
  import unittest
label_desc: Use image node_id 1 for calling a global function with example usage: execute_tests(seed_val) without return types