code: def test_soft_str(soft_str):
      assert type(soft_str("")) is str
      assert type(soft_str(Markup())) is Markup
      assert type(soft_str(15)) is str
  
imports: import pytest
  from markupsafe import Markup
label_desc: Use image node_id 20 for calling a global function with example usage: test_soft_str(soft_str) without return types