code: def test_save(self, get_operation_processor):
      value_and_expected = [("some/path", os.getcwd() + "/some/path")]
  
      for value, expected in value_and_expected:
          processor = MagicMock()
          get_operation_processor.return_value = processor
  
          with self._exp() as exp:
              path, wait = (
                  self._random_path(),
                  self._random_wait(),
              )
              var = File(exp, path)
              var.upload(value, wait=wait)
              processor.enqueue_operation.assert_called_with(
                  UploadFile(path=path, ext="", file_path=expected),
                  wait=wait,
              )
  
imports: import os
  import unittest
  from io import BytesIO, StringIO
  from pathlib import Path
  from unittest.mock import PropertyMock
  from mock import MagicMock, patch
  from neptune.attributes.atoms.file import File, FileVal
  from neptune.attributes.file_set import FileSet, FileSetVal
  from neptune.common.utils import IS_WINDOWS
  from neptune.envs import NEPTUNE_CLEAN_INTERNAL_DATA, NEPTUNE_DISABLE_PARENT_DIR_DELETION
  from neptune.internal.operation import UploadFile, UploadFileSet
  from neptune.internal.types.file_types import FileType
  from tests.e2e.utils import tmp_context
  from tests.unit.neptune.new.attributes.test_attribute_base import TestAttributeBase
label_desc: Use image node_id 3 for calling the TestFile obj's underlying member method code with example usage: obj.test_save(get_operation_processor) without return types