import json
from tradecipher_blockchain_backed_privacy_pr.contracts import LocalTrade, SharedSignals, PlanDelta


def test_local_trade_json_roundtrip():
    lt = LocalTrade(
        trade_id="T1",
        product_id="P-XYZ",
        venue="VenueA",
        price=123.45,
        size=10,
        side="buy",
        timestamp=1620000000.0,
        signer_id="Signer1",
        signature="sig123",
    )
    j = lt.to_json()
    # Ensure it's valid JSON and contains expected fields
    obj = json.loads(j)
    assert isinstance(obj, dict)
    assert obj["trade_id"] == "T1"


def test_shared_signals_and_plan_delta_structure():
    ss = SharedSignals(signals_version=1, aggregated_risk=0.5, margin_impact=0.1, liquidity_metric=0.9)
    pd = PlanDelta(delta_version=1, timestamp=1620000001.0, allocations={"T1": 0.5}, cryptographic_tag="tag")
    assert isinstance(ss.to_json(), str)
    assert isinstance(pd.to_json(), str)