code: def test_map_sum(env_async):  # async map + async filter
      tmpl = env_async.from_string(
          '{{ [[1,2], [3], [4,5,6]]|map("sum")|list }}'
      )
      assert tmpl.render() == "[3, 3, 15]"
  
imports: from collections import namedtuple
  import pytest
  from markupsafe import Markup
  from jinja2 import Environment
  from jinja2.async_utils import auto_aiter
label_desc: Use image node_id 20 for calling a global function with example usage: test_map_sum(env_async) without return types