code: def test_should_search_aim_repo_not_found_dot_back_slash(
      self, mock_os_path_exists: mock.MagicMock
  ):
      # arrange
      path = "./"
      built_dir = os.path.dirname(__file__)
      build_dir_split = built_dir.split(os.sep)
      mock_os_path_exists.side_effect = [False] * len(build_dir_split)
  
      # act
      path, found = utils.search_aim_repo(path)
  
      # assert
      self.assertFalse(found)
      self.assertIsNone(path)
  
imports: import unittest
  import os
  from unittest import mock
  from unittest.mock import MagicMock
  import aim.sdk.utils
label_desc: Use image node_id 3 for calling the TestUtils obj's underlying member method code with example usage: obj.test_should_search_aim_repo_not_found_dot_back_slash(mock_os_path_exists) without return types