code: def test_owner_error():
      response = client.get("/items/plumbus")
      assert response.status_code == 400, response.text
      assert response.json() == {"detail": "Owner error: Rick"}
  
imports: from fastapi.testclient import TestClient
  from docs_src.dependencies.tutorial008b import app
label_desc: Use image node_id 2 for calling a global function with example usage: test_owner_error() without return types