code: def setUp(self) -> None:
      self.content = b"RandOm ConTEnT" * 1024
      self.size = len(self.content)
      self.sha = sha256(self.content).digest()
      self.sample = self.content[:512]
  
file_path: huggingface_hub/tests/test_lfs.py
imports: import os
  import unittest
  from hashlib import sha256
  from io import BytesIO
  from huggingface_hub.lfs import SliceFileObj, UploadInfo
  from huggingface_hub.utils import SoftTemporaryDirectory
label_desc: Use image node_id 1 for calling the TestUploadInfo obj's underlying member method code with example usage: obj.setUp() without return types