# simple test to assert ledger_root reflects the latest recorded event
from __future__ import annotations

from pathlib import Path

from idea156_kappabridge_privacy_safe import FederationStore


def test_ledger_root_updates(tmp_path: Path) -> None:
    store = FederationStore(tmp_path / "ledger.db")
    # initially empty ledger -> zeroed hash
    assert store.ledger_root() == "0" * 64

    # record an event and ensure ledger_root updates
    rec = store.record_event("test_event", {"foo": "bar"})
    assert store.ledger_root() == rec["entry_hash"]