docstr: Test that a warning is issued if MD_EXTENSIONS is used
docstr_tok: ["Test","that","a","warning","is","issued","if","MD_EXTENSIONS","is","used"]
code: def test_md_extensions_deprecation(self):
      """Test that a warning is issued if MD_EXTENSIONS is used"""
      settings = read_settings(
          path=None,
          override={
              "PATH": INPUT_PATH,
              "OUTPUT_PATH": self.temp_path,
              "CACHE_PATH": self.temp_cache,
              "MD_EXTENSIONS": {},
          },
      )
      pelican = Pelican(settings=settings)
      mute(True)(pelican.run)()
      self.assertLogCountEqual(
          count=1,
          msg="MD_EXTENSIONS is deprecated use MARKDOWN instead.",
          level=logging.WARNING,
      )
  
imports: import locale
  import logging
  import os
  import subprocess
  import sys
  import unittest
  from collections.abc import Sequence
  from shutil import rmtree
  from tempfile import mkdtemp
  from pelican import Pelican
  from pelican.generators import StaticGenerator
  from pelican.settings import read_settings
  from pelican.tests.support import LoggedTestCase, diff_subproc, locale_available, mute, skipIfNoExecutable
label_desc: Use image node_id 11 for calling the TestPelican obj's underlying member method code with example usage: obj.test_md_extensions_deprecation() without return types