import requests
import json

def test_callback():
    try:
        url = 'http://127.0.0.1:8051/_dash-update-component'
        data = {
            "output": "current-balance.children",
            "inputs": [{"id": "ultra-fast-interval", "property": "n_intervals", "value": 1}],
            "changedPropIds": ["ultra-fast-interval.n_intervals"],
            "state": []
        }
        
        response = requests.post(url, json=data, timeout=10)
        print(f"Status: {response.status_code}")
        print(f"Response: {response.text[:1000]}")
        
    except Exception as e:
        print(f"Error: {e}")

if __name__ == "__main__":
    test_callback()