from current_status import transform


def test_preserves_prior_outputs_and_emits_current_status_implementation() -> None:
    source = {
        "service_specification": {"name": "monitor"},
        "target_management_implementation": {"module": "targets"},
        "endpoint_check_implementation": {"module": "checker"},
    }
    output = transform(source)

    for key in source:
        assert output[key] == source[key]
        assert output[key] is not source[key]
    implementation = output["current_status_implementation"]
    assert implementation["endpoint"] == "GET /targets/{target_id}/status"
    assert implementation["no_check_yet"]["http_status"] == 200
    assert implementation["not_found"]["http_status"] == 404
    assert len(implementation["race_guards"]) == 2


def test_rejects_missing_prior_contract_output() -> None:
    try:
        transform({})
    except ValueError as exc:
        assert str(exc) == "service_specification must be an object"
    else:
        raise AssertionError("expected ValueError")