code: def test_literal_include(app, status, warning):
      app.build(filenames=[app.srcdir / "index.rst"])
      et = etree_parse(app.outdir / "index.xml")
      secs = et.findall("./section/section")
      literal_include = secs[1].findall("literal_block")
      literal_src = (app.srcdir / "literal.inc").read_text(
          encoding="utf8"
      )
      assert len(literal_include) > 0
      actual = literal_include[0].text
      assert actual == literal_src
  
imports: import os.path
  import pytest
  from docutils import nodes
  from sphinx.config import Config
  from sphinx.directives.code import LiteralIncludeReader
  from sphinx.testing.util import etree_parse
label_desc: Use image node_id 32 for calling a global function with example usage: test_literal_include(app, status, warning) without return types