import datetime

class DateHookTestBase:

    DATE_FMT_ISO = '%Y-%m-%d'

    DATE_FMT_LEDGER = '%d/%m/%Y'

    def _format_config_date(self, section, key, value, date_fmt):

        if value is not None:

            section[key] = value.strftime(date_fmt)

    def new_config(

            self,

            fmt=DATE_FMT_ISO,

            default_date=datetime.date(2017, 3, 1),

            start_date=datetime.date(2017, 2, 1),

            end_date=datetime.date(2017, 4, 1)

    ):

        section = {'date format': fmt.replace('%', '%%')}

        self._format_config_date(section, 'default date', default_date, fmt)

        self._format_config_date(section, 'import start date', start_date, fmt)

        self._format_config_date(section, 'import end date', end_date, fmt)

        return {'Dates': section}