code: def test_get_item_header():
      response = client.get("/items-header/foo")
      assert response.status_code == 200, response.text
      assert response.json() == {"item": "The Foo Wrestlers"}
  
imports: from fastapi.testclient import TestClient
  from docs_src.handling_errors.tutorial002 import app
label_desc: Use image node_id 1 for calling a global function with example usage: test_get_item_header() without return types