def test_slice_decoded_cf_datetime_array(self):
actual = conventions.DecodedCFDatetimeArray(
np.array([0, 1, 2]), 'days since 1900-01-01', 'standard')
expected = pd.date_range('1900-01-01', periods=3).values
self.assertEqual(actual.dtype, np.dtype('datetime64[ns]'))
self.assertArrayEqual(actual[slice(0, 2)], expected[slice(0, 2)])
actual = conventions.DecodedCFDatetimeArray(
np.array([0, 1, 2]), 'days since 1900-01-01', 'standard')
expected = pd.date_range('1900-01-01', periods=3).values
self.assertEqual(actual.dtype, np.dtype('datetime64[ns]'))
self.assertArrayEqual(actual[[0, 2]], expected[[0, 2]])
def test_decoded_cf_datetime_array(self):
actual = conventions.DecodedCFDatetimeArray(
np.array([0, 1, 2]), 'days since 1900-01-01', 'standard')
expected = pd.date_range('1900-01-01', periods=3).values
self.assertEqual(actual.dtype, np.dtype('datetime64[ns]'))
self.assertArrayEqual(actual, expected)
# default calendar
actual = conventions.DecodedCFDatetimeArray(
np.array([0, 1, 2]), 'days since 1900-01-01')
self.assertEqual(actual.dtype, np.dtype('datetime64[ns]'))
self.assertArrayEqual(actual, expected)
def test_decoded_cf_datetime_array_2d(self):
# regression test for GH1229
array = conventions.DecodedCFDatetimeArray(np.array([[0, 1], [2, 3]]),
'days since 2000-01-01')
assert array.dtype == 'datetime64[ns]'
expected = pd.date_range('2000-01-01', periods=4).values.reshape(2, 2)
self.assertArrayEqual(np.asarray(array), expected)
def test_dataset_repr_with_netcdf4_datetimes(self):
# regression test for #347
attrs = {'units': 'days since 0001-01-01', 'calendar': 'noleap'}
with warnings.catch_warnings():
warnings.filterwarnings('ignore', 'unable to decode time')
ds = decode_cf(Dataset({'time': ('time', [0, 1], attrs)}))
self.assertIn('(time) object', repr(ds))
attrs = {'units': 'days since 1900-01-01'}
ds = decode_cf(Dataset({'time': ('time', [0, 1], attrs)}))
self.assertIn('(time) datetime64[ns]', repr(ds))
# this should not throw a warning (GH1111)
with warnings.catch_warnings():
warnings.filterwarnings('error')
conventions.DecodedCFDatetimeArray(np.asarray([722624]),
"days since 0001-01-01")
