code: def test_join_env_int(env_async, int_items):
      tmpl = env_async.from_string('{{ items()|join("|") }}')
      out = tmpl.render(items=int_items)
      assert out == "1|2|3"
  
imports: from collections import namedtuple
  import pytest
  from jinja2 import Environment
  from jinja2.utils import Markup
label_desc: Use image node_id 8 for calling a global function with example usage: test_join_env_int(env_async, int_items) without return types