import time

from nova_plan.contracts import ContractRegistry


def test_registry_schema_and_validation():
    # Retrieve the PlanDelta schema and validate a compliant payload
    schema = ContractRegistry.get_schema("PlanDelta", 1)
    assert schema is not None

    payload = {"agent_id": "A1", "delta": {"x": 1.0}, "timestamp": time.time()}
    assert ContractRegistry.validate_against_schema(payload, schema) is True

    # Missing a required field should fail validation
    bad_payload = {"agent_id": "A1", "delta": {"x": 1.0}}
    assert ContractRegistry.validate_against_schema(bad_payload, schema) is False