def METHOD_NAME(self):
    self.n_days = 4
    self.start_date = pd.to_datetime("2018-01-01 00:00:00")
    self.end_date = self.start_date + pd.DateOffset(days=self.n_days - 1)
    self.ti = pd.date_range(start=self.start_date, end=self.end_date, freq="1D",)
    self.ti_long = pd.date_range(
        start=self.start_date, end=self.end_date, freq="1H",
    )
    self.test_dict_series = {
        "series": {
            DATA_TYPE_JSON_KEY: TYPE_SERIES,
            VALUE: [d + 1 for d in range(self.n_days)],
        }
    }
    self.test_result_series = pd.Series(
        [d + 1 for d in range(self.n_days)], index=self.ti
    )