code: def test_build_config_requirements():
      command_line = [
          os.path.join(
              _TESTS_ROOT, "utilities/packaging/projects/req/app.py"
          )
      ]
      application_testing(
          RequirementsLightningTestApp, command_line + EXTRAS_ARGS
      )
      sys.path = sys.path[:-1]
  
imports: import logging
  import os
  import sys
  from unittest.mock import Mock
  from lightning.app.testing import LightningTestApp, application_testing
  from lightning.app.utilities.packaging.build_config import BuildConfig
  from tests_app import _TESTS_ROOT
label_desc: Use image node_id 6 for calling a global function with example usage: test_build_config_requirements() without return types