def test_round(self, tz_naive_fixture):
tz = tz_naive_fixture
rng = date_range(start="2016-01-01", periods=5, freq="30Min", tz=tz)
elt = rng[1]
expected_rng = DatetimeIndex(
[
Timestamp("2016-01-01 00:00:00", tz=tz),
Timestamp("2016-01-01 00:00:00", tz=tz),
Timestamp("2016-01-01 01:00:00", tz=tz),
Timestamp("2016-01-01 02:00:00", tz=tz),
Timestamp("2016-01-01 02:00:00", tz=tz),
]
)
expected_elt = expected_rng[1]
tm.assert_index_equal(rng.round(freq="H"), expected_rng)
assert elt.round(freq="H") == expected_elt
msg = INVALID_FREQ_ERR_MSG
with pytest.raises(ValueError, match=msg):
rng.round(freq="foo")
with pytest.raises(ValueError, match=msg):
elt.round(freq="foo")
msg = "<MonthEnd> is a non-fixed frequency"
with pytest.raises(ValueError, match=msg):
rng.round(freq="M")
with pytest.raises(ValueError, match=msg):
elt.round(freq="M")
# GH#14440 & GH#15578
index = DatetimeIndex(["2016-10-17 12:00:00.0015"], tz=tz)
result = index.round("ms")
expected = DatetimeIndex(["2016-10-17 12:00:00.002000"], tz=tz)
tm.assert_index_equal(result, expected)
for freq in ["us", "ns"]:
tm.assert_index_equal(index, index.round(freq))
index = DatetimeIndex(["2016-10-17 12:00:00.00149"], tz=tz)
result = index.round("ms")
expected = DatetimeIndex(["2016-10-17 12:00:00.001000"], tz=tz)
tm.assert_index_equal(result, expected)
index = DatetimeIndex(["2016-10-17 12:00:00.001501031"])
result = index.round("10ns")
expected = DatetimeIndex(["2016-10-17 12:00:00.001501030"])
tm.assert_index_equal(result, expected)
with tm.assert_produces_warning(False):
ts = "2016-10-17 12:00:00.001501031"
DatetimeIndex([ts]).round("1010ns")
def test_round(self, tz_naive_fixture):
tz = tz_naive_fixture
rng = date_range(start='2016-01-01', periods=5,
freq='30Min', tz=tz)
elt = rng[1]
expected_rng = DatetimeIndex([
Timestamp('2016-01-01 00:00:00', tz=tz, freq='30T'),
Timestamp('2016-01-01 00:00:00', tz=tz, freq='30T'),
Timestamp('2016-01-01 01:00:00', tz=tz, freq='30T'),
Timestamp('2016-01-01 02:00:00', tz=tz, freq='30T'),
Timestamp('2016-01-01 02:00:00', tz=tz, freq='30T'),
])
expected_elt = expected_rng[1]
tm.assert_index_equal(rng.round(freq='H'), expected_rng)
assert elt.round(freq='H') == expected_elt
msg = pd._libs.tslibs.frequencies.INVALID_FREQ_ERR_MSG
with pytest.raises(ValueError, match=msg):
rng.round(freq='foo')
with pytest.raises(ValueError, match=msg):
elt.round(freq='foo')
msg = "<MonthEnd> is a non-fixed frequency"
with pytest.raises(ValueError, match=msg):
rng.round(freq='M')
with pytest.raises(ValueError, match=msg):
elt.round(freq='M')
# GH#14440 & GH#15578
index = DatetimeIndex(['2016-10-17 12:00:00.0015'], tz=tz)
result = index.round('ms')
expected = DatetimeIndex(['2016-10-17 12:00:00.002000'], tz=tz)
tm.assert_index_equal(result, expected)
for freq in ['us', 'ns']:
tm.assert_index_equal(index, index.round(freq))
index = DatetimeIndex(['2016-10-17 12:00:00.00149'], tz=tz)
result = index.round('ms')
expected = DatetimeIndex(['2016-10-17 12:00:00.001000'], tz=tz)
tm.assert_index_equal(result, expected)
index = DatetimeIndex(['2016-10-17 12:00:00.001501031'])
result = index.round('10ns')
expected = DatetimeIndex(['2016-10-17 12:00:00.001501030'])
tm.assert_index_equal(result, expected)
with tm.assert_produces_warning(False):
ts = '2016-10-17 12:00:00.001501031'
DatetimeIndex([ts]).round('1010ns')
def test_round(self, tz_naive_fixture):
tz = tz_naive_fixture
rng = date_range(start='2016-01-01', periods=5,
freq='30Min', tz=tz)
elt = rng[1]
expected_rng = DatetimeIndex([
Timestamp('2016-01-01 00:00:00', tz=tz, freq='30T'),
Timestamp('2016-01-01 00:00:00', tz=tz, freq='30T'),
Timestamp('2016-01-01 01:00:00', tz=tz, freq='30T'),
Timestamp('2016-01-01 02:00:00', tz=tz, freq='30T'),
Timestamp('2016-01-01 02:00:00', tz=tz, freq='30T'),
])
expected_elt = expected_rng[1]
tm.assert_index_equal(rng.round(freq='H'), expected_rng)
assert elt.round(freq='H') == expected_elt
msg = pd._libs.tslibs.frequencies.INVALID_FREQ_ERR_MSG
with pytest.raises(ValueError, match=msg):
rng.round(freq='foo')
with pytest.raises(ValueError, match=msg):
elt.round(freq='foo')
msg = "<MonthEnd> is a non-fixed frequency"
with pytest.raises(ValueError, match=msg):
rng.round(freq='M')
with pytest.raises(ValueError, match=msg):
elt.round(freq='M')
# GH#14440 & GH#15578
index = DatetimeIndex(['2016-10-17 12:00:00.0015'], tz=tz)
result = index.round('ms')
expected = DatetimeIndex(['2016-10-17 12:00:00.002000'], tz=tz)
tm.assert_index_equal(result, expected)
for freq in ['us', 'ns']:
tm.assert_index_equal(index, index.round(freq))
index = DatetimeIndex(['2016-10-17 12:00:00.00149'], tz=tz)
result = index.round('ms')
expected = DatetimeIndex(['2016-10-17 12:00:00.001000'], tz=tz)
tm.assert_index_equal(result, expected)
index = DatetimeIndex(['2016-10-17 12:00:00.001501031'])
result = index.round('10ns')
expected = DatetimeIndex(['2016-10-17 12:00:00.001501030'])
tm.assert_index_equal(result, expected)
with tm.assert_produces_warning(False):
ts = '2016-10-17 12:00:00.001501031'
DatetimeIndex([ts]).round('1010ns')
def test_round_int64(self, start, index_freq, periods, round_freq):
dt = DatetimeIndex(start=start, freq=index_freq, periods=periods)
unit = to_offset(round_freq).nanos
# test floor
result = dt.floor(round_freq)
diff = dt.asi8 - result.asi8
mod = result.asi8 % unit
assert (mod == 0).all(), "floor not a {} multiple".format(round_freq)
assert (0 <= diff).all() and (diff < unit).all(), "floor error"
# test ceil
result = dt.ceil(round_freq)
diff = result.asi8 - dt.asi8
mod = result.asi8 % unit
assert (mod == 0).all(), "ceil not a {} multiple".format(round_freq)
assert (0 <= diff).all() and (diff < unit).all(), "ceil error"
# test round
result = dt.round(round_freq)
diff = abs(result.asi8 - dt.asi8)
mod = result.asi8 % unit
assert (mod == 0).all(), "round not a {} multiple".format(round_freq)
assert (diff <= unit // 2).all(), "round error"
if unit % 2 == 0:
assert (
result.asi8[diff == unit // 2] % 2 == 0
).all(), "round half to even error"
def test_round_int64(self, start, index_freq, periods, round_freq):
dt = DatetimeIndex(start=start, freq=index_freq, periods=periods)
unit = to_offset(round_freq).nanos
# test floor
result = dt.floor(round_freq)
diff = dt.asi8 - result.asi8
mod = result.asi8 % unit
assert (mod == 0).all(), "floor not a {} multiple".format(round_freq)
assert (0 <= diff).all() and (diff < unit).all(), "floor error"
# test ceil
result = dt.ceil(round_freq)
diff = result.asi8 - dt.asi8
mod = result.asi8 % unit
assert (mod == 0).all(), "ceil not a {} multiple".format(round_freq)
assert (0 <= diff).all() and (diff < unit).all(), "ceil error"
# test round
result = dt.round(round_freq)
diff = abs(result.asi8 - dt.asi8)
mod = result.asi8 % unit
assert (mod == 0).all(), "round not a {} multiple".format(round_freq)
assert (diff <= unit // 2).all(), "round error"
if unit % 2 == 0:
assert (result.asi8[diff == unit // 2] %
2 == 0).all(), "round half to even error"