import time
from signalvault_verifiable_privacy_preservin.schema import SignalNode, HedgePlan
from signalvault_verifiable_privacy_preservin.replay import DeterministicReplayEngine


def test_delta_application_is_deterministic():
    # base state represents a simple graph state snapshot
    base = {
        "signals": [],
        "hedges": [],
        "version": 1,
    }

    delta1 = {"signals": ["s1"], "version": 2}
    delta2 = {"hedges": ["h1"], "version": 3}

    engine = DeterministicReplayEngine()
    st1 = engine.apply_delta(base, delta1)
    st2 = engine.apply_delta(st1, delta2)

    assert st2["version"] == 3
    assert st2["signals"] == ["s1"]
    assert st2["hedges"] == ["h1"]


def test_schema_dataclasses_are_instantiable():
    sn = SignalNode(asset="ETH", venue="VenueA", signal_type="price", timestamp=int(time.time()), quality=0.9)
    hp = HedgePlan(id="hp1", delta={"action": "buy"})
    assert sn.asset == "ETH"
    assert hp.id == "hp1"