"""P3: plan hash integrity tests."""
from trading.plan_integrity import compute_plan_hash, verify_plan_hash, bind_plan_hash


def _sample_plan(**over):
    base = {
        "symbol": "BTCUSDT",
        "decision": "LONG",
        "entry": 100.0,
        "stop_loss": 95.0,
        "take_profit": 110.0,
        "leverage": 5,
        "quantity": 1.0,
        "risk_profile": "moderate",
        "futuresVerified": True,
        "noTradeGuard": False,
        "trading_readiness": "ready",
        "executable": True,
        "expires_at": "2099-01-01T00:00:00Z",
    }
    base.update(over)
    return base


def test_hash_stable():
    a = compute_plan_hash(_sample_plan())
    b = compute_plan_hash(_sample_plan())
    assert a == b
    assert len(a) == 64


def test_hash_changes_on_field():
    a = compute_plan_hash(_sample_plan())
    b = compute_plan_hash(_sample_plan(entry=101.0))
    assert a != b


def test_verify_and_bind():
    plan = bind_plan_hash(_sample_plan())
    assert "plan_hash" in plan
    assert verify_plan_hash(plan, plan["plan_hash"])
    plan["entry"] = 999.0
    assert not verify_plan_hash(plan, plan["plan_hash"])