code: def test_request_less_rendering(app, app_ctx):
      app.config["WORLD_NAME"] = "Special World"
  
      @app.context_processor
      def context_processor():
          return dict(foo=42)
  
      rv = flask.render_template_string(
          "Hello {{ config.WORLD_NAME }} {{ foo }}"
      )
      assert rv == "Hello Special World 42"
  
imports: import logging
  import pytest
  import werkzeug.serving
  from jinja2 import TemplateNotFound
  from markupsafe import Markup
  import flask
label_desc: Use image node_id 4 for calling a global function with example usage: test_request_less_rendering(app, app_ctx) and returns: dict