code: def test_file_data_source_get_file_list_with_single_file():
      data_source = sagemaker.local.data.LocalFileDataSource(
          "/some/batch/file.csv"
      )
      assert data_source.get_file_list() == ["/some/batch/file.csv"]
  
imports: from __future__ import absolute_import
  import sys
  import pytest
  from mock import patch, Mock
  import sagemaker.amazon
  import sagemaker.local.data
label_desc: Use image node_id 4 for calling a global function with example usage: test_file_data_source_get_file_list_with_single_file() without return types