collapse_query_tests.py 文件源码

def test_add_collapse(self):
        """Testea que luego de agregar un collapse default, los
        resultados sean anuales, es decir cada uno a un año de
        diferencia con su anterior"""
        self.query.add_series(self.single_series, self.rep_mode, self.series_periodicity)
        self.query.add_collapse()
        data = self.query.run()
        prev_timestamp = None
        for row in data:
            timestamp = row[0]
            parsed_timestamp = iso8601.parse_date(timestamp)
            if not prev_timestamp:
                prev_timestamp = parsed_timestamp
                continue
            delta = relativedelta(parsed_timestamp, prev_timestamp)
            self.assertTrue(delta.years == 1, timestamp)
            prev_timestamp = parsed_timestamp