text: import posixpath
  from random import randint
  
  from tests.common.utils import randstring
  from seahub.test_utils import BaseTestCase
  from seahub.utils import normalize_dir_path
  
  class NormalizeDirPathTest(BaseTestCase):
  
      def test_normalize_dir_path(self):
  
          slash = '/'
          folder_1 = randstring(3)
          folder_2 = randstring(3)
  
          random_slash = ''
          for i in range(1, randint(1, 10)):
              random_slash += slash
  
          posix_path = posixpath.join(folder_1, folder_2)
          correct_path = slash + posix_path + slash
  
          path_without_slash = posix_path
          path_starts_with_random_slash = random_slash + posix_path
          path_ends_with_random_slash = posix_path + random_slash
          path_with_slash = random_slash + posix_path + random_slash
  
          assert normalize_dir_path(path_without_slash) == correct_path
          assert normalize_dir_path(path_starts_with_random_slash) == correct_path
          assert normalize_dir_path(path_ends_with_random_slash) == correct_path
          assert normalize_dir_path(path_with_slash) == correct_path
  