code: def test_conf_scope_can_access_fallback_and_preset():
      @ConfigScope
      def conf_scope(a, b):
          answer = a + b
  
      cfg = conf_scope(preset={"b": 40}, fallback={"a": 2})
      assert cfg["answer"] == 42
  
imports: import pytest
  import sacred.optional
  from sacred.config.config_scope import ConfigScope, dedent_function_body, dedent_line, get_function_body, is_empty_or_comment
  from sacred.config.custom_containers import DogmaticDict, DogmaticList
label_desc: Use image node_id 19 for calling a global function with example usage: test_conf_scope_can_access_fallback_and_preset() without return types