def test_infer_datetime_units(self):
for dates, expected in [
(pd.date_range('1900-01-01',
periods=5), 'days since 1900-01-01 00:00:00'),
(pd.date_range('1900-01-01 12:00:00', freq='H',
periods=2), 'hours since 1900-01-01 12:00:00'),
(['1900-01-01', '1900-01-02',
'1900-01-02 00:00:01'], 'seconds since 1900-01-01 00:00:00'),
(pd.to_datetime(['1900-01-01', '1900-01-02',
'NaT']), 'days since 1900-01-01 00:00:00'),
(pd.to_datetime(['1900-01-01', '1900-01-02T00:00:00.005']),
'seconds since 1900-01-01 00:00:00'),
(pd.to_datetime(['NaT',
'1900-01-01']), 'days since 1900-01-01 00:00:00'),
(pd.to_datetime(['NaT']), 'days since 1970-01-01 00:00:00'),
]:
self.assertEqual(expected, conventions.infer_datetime_units(dates))
def test_infer_datetime_units(self):
for dates, expected in [(pd.date_range('1900-01-01', periods=5),
'days since 1900-01-01 00:00:00'),
(pd.date_range('1900-01-01 12:00:00', freq='H',
periods=2),
'hours since 1900-01-01 12:00:00'),
(['1900-01-01', '1900-01-02',
'1900-01-02 00:00:01'],
'seconds since 1900-01-01 00:00:00'),
(pd.to_datetime(['1900-01-01', '1900-01-02', 'NaT']),
'days since 1900-01-01 00:00:00'),
(pd.to_datetime(['1900-01-01',
'1900-01-02T00:00:00.005']),
'seconds since 1900-01-01 00:00:00'),
(pd.to_datetime(['NaT', '1900-01-01']),
'days since 1900-01-01 00:00:00'),
(pd.to_datetime(['NaT']),
'days since 1970-01-01 00:00:00'),
]:
self.assertEqual(expected, conventions.infer_datetime_units(dates))