from citygrid.bridge import EnergiaBridge
from citygrid.core import LocalProblem


def test_bridge_to_external_message_roundtrip():
    bridge = EnergiaBridge(registry=None)
    lp = LocalProblem(id="LP1", domain="electric", assets=["b1"], objective={"minimize": "cost"})
    msg = bridge.to_external_message(lp)
    assert msg["type"] == "LocalProblem"
    assert msg["id"] == "LP1"