from idea76_gameeconomy_studio_verifiable.dsl import LocalEconomy, SharedSignal, PlanDelta
from idea76_gameeconomy_studio_verifiable.core import EconomyEngine


def test_two_shards_deterministic_backtest():
    shard1 = LocalEconomy(
        name="Shard1",
        currencies=["COIN"],
        items=["Shield"],
        budgets={"inflation_cap": 0.03},
    )
    shard2 = LocalEconomy(
        name="Shard2",
        currencies=["COIN"],
        items=["Bow"],
        budgets={"inflation_cap": 0.04},
    )

    engine = EconomyEngine([shard1, shard2])
    delta = PlanDelta(round_id=1, changes={"currency:COIN": 50})
    signals = [SharedSignal("Shard1", "liquidity", 0.6, 1), SharedSignal("Shard2", "liquidity", 0.7, 1)]

    ir = engine.simulate_round(signals, delta)

    assert "Shard1" in ir and "Shard2" in ir
    assert ir["Shard1"]["currencies"]["COIN"] >= 0
    assert ir["Shard2"]["currencies"]["COIN"] >= 0