def valid_reservation_data(reservation_unit):
    """ Valid JSON data for creating a new Reservation """
    return {
        "begin": "2020-11-10T08:00",
        "end": "2020-11-10T09:30",
        "buffer_time_before": "10",
        "buffer_time_after": "10",
        "reservation_unit": [reservation_unit.id],
    }