code: def test_content_parser_no_sections(self):
      parser = search_index.ContentParser()
  
      parser.feed("No H1 or H2<span>Title</span>TEST")
  
      self.assertEqual(parser.data, [])
  
imports: import json
  import unittest
  from unittest import mock
  from mkdocs.config.config_options import ValidationError
  from mkdocs.contrib import search
  from mkdocs.contrib.search import search_index
  from mkdocs.structure.files import File
  from mkdocs.structure.pages import Page
  from mkdocs.structure.toc import get_toc
  from mkdocs.tests.base import dedent, get_markdown_toc, load_config
label_desc: Use image node_id 5 for calling the SearchIndexTests obj's underlying member method code with example usage: obj.test_content_parser_no_sections() without return types