def test_cf_timedelta(self):
examples = [
('1D', 'days', np.int64(1)),
(['1D', '2D', '3D'], 'days', np.array([1, 2, 3], 'int64')),
('1h', 'hours', np.int64(1)),
('1ms', 'milliseconds', np.int64(1)),
('1us', 'microseconds', np.int64(1)),
(['NaT', '0s', '1s'], None, [np.nan, 0, 1]),
(['30m', '60m'], 'hours', [0.5, 1.0]),
]
if pd.__version__ >= '0.16':
# not quite sure why, but these examples don't work on older pandas
examples.extend([(np.timedelta64('NaT', 'ns'), 'days', np.nan),
(['NaT', 'NaT'], 'days', [np.nan, np.nan])])
for timedeltas, units, numbers in examples:
timedeltas = pd.to_timedelta(timedeltas, box=False)
numbers = np.array(numbers)
expected = numbers
actual, _ = conventions.encode_cf_timedelta(timedeltas, units)
self.assertArrayEqual(expected, actual)
self.assertEqual(expected.dtype, actual.dtype)
if units is not None:
expected = timedeltas
actual = conventions.decode_cf_timedelta(numbers, units)
self.assertArrayEqual(expected, actual)
self.assertEqual(expected.dtype, actual.dtype)
expected = np.timedelta64('NaT', 'ns')
actual = conventions.decode_cf_timedelta(np.array(np.nan), 'days')
self.assertArrayEqual(expected, actual)
def test_cf_timedelta(self):
examples = [
('1D', 'days', np.int64(1)),
(['1D', '2D', '3D'], 'days', np.array([1, 2, 3], 'int64')),
('1h', 'hours', np.int64(1)),
('1ms', 'milliseconds', np.int64(1)),
('1us', 'microseconds', np.int64(1)),
(['NaT', '0s', '1s'], None, [np.nan, 0, 1]),
(['30m', '60m'], 'hours', [0.5, 1.0]),
]
if pd.__version__ >= '0.16':
# not quite sure why, but these examples don't work on older pandas
examples.extend([(np.timedelta64('NaT', 'ns'), 'days', np.nan),
(['NaT', 'NaT'], 'days', [np.nan, np.nan])])
for timedeltas, units, numbers in examples:
timedeltas = pd.to_timedelta(timedeltas, box=False)
numbers = np.array(numbers)
expected = numbers
actual, _ = conventions.encode_cf_timedelta(timedeltas, units)
self.assertArrayEqual(expected, actual)
self.assertEqual(expected.dtype, actual.dtype)
if units is not None:
expected = timedeltas
actual = conventions.decode_cf_timedelta(numbers, units)
self.assertArrayEqual(expected, actual)
self.assertEqual(expected.dtype, actual.dtype)
expected = np.timedelta64('NaT', 'ns')
actual = conventions.decode_cf_timedelta(np.array(np.nan), 'days')
self.assertArrayEqual(expected, actual)