from idea128_investlearn_studio_verifiable import simulation, sync


def test_simulation_deterministic():
    a = simulation.simulate_price_series(seed=42, n_steps=5, start_price=100.0)
    b = simulation.simulate_price_series(seed=42, n_steps=5, start_price=100.0)
    assert a == b
    assert len(a) == 5


def test_ledger_append_and_verify():
    ledger = sync.Ledger()
    ledger.append({"event": "module_completed", "module": "risk"})
    ledger.append({"event": "quiz_passed", "module": "portfolio", "score": 0.8})
    assert ledger.verify()