code: def test_say_hello(client):
      rv = client.get("/")
      assert rv.status_code == 200
      assert rv.json
      if client._example == "base_response":
          data = rv.json["data"]
      else:
          data = rv.json
      assert data["message"] == "Hello!"
  
file_path: apiflask/examples/test_examples.py
imports: import os
  import sys
  from importlib import reload
  import flask_sqlalchemy
  import pytest
label_desc: Use image node_id 2 for calling a global function with example usage: test_say_hello(client) without return types