code: def test_source():
      prompt = "Who are you?%s\nFOO\n%s" % (
          source_prefix,
          source_postfix,
      )
      assert prompt.find(source_prefix) >= 0
  
file_path: h2ogpt/tests/test_prompter.py
imports: import time
  import pytest
  from tests.utils import wrap_test_forked
  from src.enums import source_prefix, source_postfix
  from src.prompter import generate_prompt
label_desc: Use image node_id 8 for calling a global function with example usage: test_source() without return types