code: def test_file_output_str_read(xml_books, parser, from_file_expected):
      df_file = read_xml(xml_books, parser=parser)
  
      with tm.ensure_clean("test.xml") as path:
          df_file.to_xml(path, parser=parser)
          with open(path, "rb") as f:
              output = f.read().decode("utf-8").strip()
  
          output = equalize_decl(output)
  
          assert output == from_file_expected
  
imports: from __future__ import annotations
  from io import BytesIO, StringIO
  import os
  import numpy
  import pytest
  import pandas.util._test_decorators
  from pandas import NA, DataFrame, Index
  import pandas._testing
  from pandas.io.common import get_handle
  from pandas.io.xml import read_xml
label_desc: Use image node_id 7 for calling a global function with example usage: test_file_output_str_read(xml_books, parser, from_file_expected) without return types