text: import os
  import sys
  
  sys.path.append(os.path.dirname(os.path.dirname(__file__)))
  
  
  def test_pytest():
      from tests.utils import tester
  
      lst = [1, 2, 3]
      lst2 = tester(lst)
      assert lst == lst2
      lst3 = tester(lst + [4])
      assert (
              [1, 2, 3, 4]
              == lst3
      ), 'message'
      x = tester.x
      assert x is tester
  