code: def test_info(self):
      root_dir = self.hffs.info(self.hf_path)
      self.assertEqual(root_dir["type"], "directory")
      self.assertEqual(root_dir["size"], 0)
      self.assertTrue(root_dir["name"].endswith(self.repo_id))
      self.assertIsNotNone(root_dir["last_commit"])
  
      data_dir = self.hffs.info(self.hf_path + "/data")
      self.assertEqual(data_dir["type"], "directory")
      self.assertEqual(data_dir["size"], 0)
      self.assertTrue(data_dir["name"].endswith("/data"))
      self.assertIsNotNone(data_dir["last_commit"])
      self.assertIsNotNone(data_dir["tree_id"])
  
      text_data_file = self.hffs.info(
          self.hf_path + "/data/text_data.txt"
      )
      self.assertEqual(text_data_file["type"], "file")
      self.assertGreater(text_data_file["size"], 0)  # not empty
      self.assertTrue(
          text_data_file["name"].endswith("/data/text_data.txt")
      )
      self.assertIsNone(text_data_file["lfs"])
      self.assertIsNotNone(text_data_file["last_commit"])
      self.assertIsNotNone(text_data_file["blob_id"])
      self.assertIn(
          "security", text_data_file
      )  # the staging endpoint does not run security checks
  
      # cached info
      self.assertEqual(
          self.hffs.info(self.hf_path + "/data/text_data.txt"),
          text_data_file,
      )
  
imports: import datetime
  import unittest
  from typing import Optional
  from unittest.mock import patch
  import fsspec
  import pytest
  from huggingface_hub.hf_file_system import HfFileSystem
  from huggingface_hub.utils import RepositoryNotFoundError, RevisionNotFoundError
  from .testing_constants import ENDPOINT_STAGING, TOKEN
  from .testing_utils import repo_name
label_desc: Use image node_id 4 for calling the HfFileSystemTests obj's underlying member method code with example usage: obj.test_info() without return types