888 lines
31 KiB
Python
888 lines
31 KiB
Python
import calendar
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from datetime import (
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date,
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datetime,
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timedelta,
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timezone,
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)
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import dateutil.tz
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from dateutil.tz import tzutc
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import numpy as np
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import pytest
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import pytz
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from pandas._libs.tslibs.dtypes import NpyDatetimeUnit
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from pandas.compat import (
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PY39,
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PY310,
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)
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from pandas.errors import OutOfBoundsDatetime
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from pandas import (
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Period,
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Timedelta,
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Timestamp,
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)
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if PY39:
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import zoneinfo
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class TestTimestampConstructors:
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def test_construct_from_string_invalid_raises(self):
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# dateutil (weirdly) parses "200622-12-31" as
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# datetime(2022, 6, 20, 12, 0, tzinfo=tzoffset(None, -111600)
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# which besides being mis-parsed, is a tzoffset that will cause
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# str(ts) to raise ValueError. Ensure we raise in the constructor
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# instead.
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# see test_to_datetime_malformed_raise for analogous to_datetime test
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with pytest.raises(ValueError, match="gives an invalid tzoffset"):
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Timestamp("200622-12-31")
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def test_constructor_str_infer_reso(self):
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# non-iso8601 path
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# _parse_delimited_date path
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ts = Timestamp("01/30/2023")
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assert ts.unit == "s"
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# _parse_dateabbr_string path
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ts = Timestamp("2015Q1")
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assert ts.unit == "s"
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# dateutil_parse path
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ts = Timestamp("2016-01-01 1:30:01 PM")
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assert ts.unit == "s"
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ts = Timestamp("2016 June 3 15:25:01.345")
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assert ts.unit == "ms"
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def test_constructor_from_iso8601_str_with_offset_reso(self):
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# GH#49737
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ts = Timestamp("2016-01-01 04:05:06-01:00")
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assert ts.unit == "s"
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ts = Timestamp("2016-01-01 04:05:06.000-01:00")
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assert ts.unit == "ms"
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ts = Timestamp("2016-01-01 04:05:06.000000-01:00")
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assert ts.unit == "us"
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ts = Timestamp("2016-01-01 04:05:06.000000001-01:00")
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assert ts.unit == "ns"
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def test_constructor_from_date_second_reso(self):
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# GH#49034 constructing from a pydate object gets lowest supported
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# reso, i.e. seconds
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obj = date(2012, 9, 1)
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ts = Timestamp(obj)
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assert ts.unit == "s"
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@pytest.mark.parametrize("typ", [int, float])
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def test_construct_from_int_float_with_unit_out_of_bound_raises(self, typ):
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# GH#50870 make sure we get a OutOfBoundsDatetime instead of OverflowError
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val = typ(150000000000000)
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msg = f"cannot convert input {val} with the unit 'D'"
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with pytest.raises(OutOfBoundsDatetime, match=msg):
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Timestamp(val, unit="D")
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@pytest.mark.parametrize("typ", [int, float])
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def test_constructor_int_float_with_YM_unit(self, typ):
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# GH#47266 avoid the conversions in cast_from_unit
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val = typ(150)
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ts = Timestamp(val, unit="Y")
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expected = Timestamp("2120-01-01")
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assert ts == expected
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ts = Timestamp(val, unit="M")
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expected = Timestamp("1982-07-01")
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assert ts == expected
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def test_constructor_float_not_round_with_YM_unit_deprecated(self):
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# GH#47267 avoid the conversions in cast_from-unit
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msg = "Conversion of non-round float with unit=[MY] is ambiguous"
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with pytest.raises(ValueError, match=msg):
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Timestamp(150.5, unit="Y")
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with pytest.raises(ValueError, match=msg):
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Timestamp(150.5, unit="M")
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def test_constructor_datetime64_with_tz(self):
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# GH#42288, GH#24559
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dt = np.datetime64("1970-01-01 05:00:00")
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tzstr = "UTC+05:00"
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# pre-2.0 this interpreted dt as a UTC time. in 2.0 this is treated
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# as a wall-time, consistent with DatetimeIndex behavior
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ts = Timestamp(dt, tz=tzstr)
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alt = Timestamp(dt).tz_localize(tzstr)
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assert ts == alt
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assert ts.hour == 5
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def test_constructor(self):
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base_str = "2014-07-01 09:00"
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base_dt = datetime(2014, 7, 1, 9)
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base_expected = 1_404_205_200_000_000_000
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# confirm base representation is correct
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assert calendar.timegm(base_dt.timetuple()) * 1_000_000_000 == base_expected
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tests = [
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(base_str, base_dt, base_expected),
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(
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"2014-07-01 10:00",
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datetime(2014, 7, 1, 10),
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base_expected + 3600 * 1_000_000_000,
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),
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(
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"2014-07-01 09:00:00.000008000",
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datetime(2014, 7, 1, 9, 0, 0, 8),
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base_expected + 8000,
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),
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(
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"2014-07-01 09:00:00.000000005",
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Timestamp("2014-07-01 09:00:00.000000005"),
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base_expected + 5,
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),
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]
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timezones = [
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(None, 0),
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("UTC", 0),
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(pytz.utc, 0),
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("Asia/Tokyo", 9),
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("US/Eastern", -4),
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("dateutil/US/Pacific", -7),
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(pytz.FixedOffset(-180), -3),
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(dateutil.tz.tzoffset(None, 18000), 5),
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]
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for date_str, date_obj, expected in tests:
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for result in [Timestamp(date_str), Timestamp(date_obj)]:
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result = result.as_unit("ns") # test originally written before non-nano
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# only with timestring
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assert result.as_unit("ns")._value == expected
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# re-creation shouldn't affect to internal value
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result = Timestamp(result)
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assert result.as_unit("ns")._value == expected
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# with timezone
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for tz, offset in timezones:
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for result in [Timestamp(date_str, tz=tz), Timestamp(date_obj, tz=tz)]:
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result = result.as_unit(
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"ns"
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) # test originally written before non-nano
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expected_tz = expected - offset * 3600 * 1_000_000_000
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assert result.as_unit("ns")._value == expected_tz
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# should preserve tz
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result = Timestamp(result)
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assert result.as_unit("ns")._value == expected_tz
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# should convert to UTC
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if tz is not None:
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result = Timestamp(result).tz_convert("UTC")
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else:
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result = Timestamp(result, tz="UTC")
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expected_utc = expected - offset * 3600 * 1_000_000_000
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assert result.as_unit("ns")._value == expected_utc
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def test_constructor_with_stringoffset(self):
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# GH 7833
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base_str = "2014-07-01 11:00:00+02:00"
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base_dt = datetime(2014, 7, 1, 9)
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base_expected = 1_404_205_200_000_000_000
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# confirm base representation is correct
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assert calendar.timegm(base_dt.timetuple()) * 1_000_000_000 == base_expected
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tests = [
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(base_str, base_expected),
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("2014-07-01 12:00:00+02:00", base_expected + 3600 * 1_000_000_000),
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("2014-07-01 11:00:00.000008000+02:00", base_expected + 8000),
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("2014-07-01 11:00:00.000000005+02:00", base_expected + 5),
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]
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timezones = [
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(None, 0),
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("UTC", 0),
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(pytz.utc, 0),
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("Asia/Tokyo", 9),
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("US/Eastern", -4),
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("dateutil/US/Pacific", -7),
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(pytz.FixedOffset(-180), -3),
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(dateutil.tz.tzoffset(None, 18000), 5),
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]
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for date_str, expected in tests:
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for result in [Timestamp(date_str)]:
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# only with timestring
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assert result.as_unit("ns")._value == expected
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# re-creation shouldn't affect to internal value
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result = Timestamp(result)
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assert result.as_unit("ns")._value == expected
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# with timezone
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for tz, offset in timezones:
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result = Timestamp(date_str, tz=tz)
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expected_tz = expected
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assert result.as_unit("ns")._value == expected_tz
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# should preserve tz
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result = Timestamp(result)
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assert result.as_unit("ns")._value == expected_tz
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# should convert to UTC
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result = Timestamp(result).tz_convert("UTC")
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expected_utc = expected
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assert result.as_unit("ns")._value == expected_utc
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# This should be 2013-11-01 05:00 in UTC
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# converted to Chicago tz
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result = Timestamp("2013-11-01 00:00:00-0500", tz="America/Chicago")
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assert result._value == Timestamp("2013-11-01 05:00")._value
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expected = "Timestamp('2013-11-01 00:00:00-0500', tz='America/Chicago')"
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assert repr(result) == expected
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assert result == eval(repr(result))
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# This should be 2013-11-01 05:00 in UTC
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# converted to Tokyo tz (+09:00)
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result = Timestamp("2013-11-01 00:00:00-0500", tz="Asia/Tokyo")
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assert result._value == Timestamp("2013-11-01 05:00")._value
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expected = "Timestamp('2013-11-01 14:00:00+0900', tz='Asia/Tokyo')"
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assert repr(result) == expected
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assert result == eval(repr(result))
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# GH11708
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# This should be 2015-11-18 10:00 in UTC
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# converted to Asia/Katmandu
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result = Timestamp("2015-11-18 15:45:00+05:45", tz="Asia/Katmandu")
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assert result._value == Timestamp("2015-11-18 10:00")._value
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expected = "Timestamp('2015-11-18 15:45:00+0545', tz='Asia/Katmandu')"
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assert repr(result) == expected
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assert result == eval(repr(result))
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# This should be 2015-11-18 10:00 in UTC
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# converted to Asia/Kolkata
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result = Timestamp("2015-11-18 15:30:00+05:30", tz="Asia/Kolkata")
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assert result._value == Timestamp("2015-11-18 10:00")._value
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expected = "Timestamp('2015-11-18 15:30:00+0530', tz='Asia/Kolkata')"
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assert repr(result) == expected
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assert result == eval(repr(result))
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def test_constructor_invalid(self):
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msg = "Cannot convert input"
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with pytest.raises(TypeError, match=msg):
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Timestamp(slice(2))
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msg = "Cannot convert Period"
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with pytest.raises(ValueError, match=msg):
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Timestamp(Period("1000-01-01"))
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def test_constructor_invalid_tz(self):
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# GH#17690
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msg = (
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"Argument 'tzinfo' has incorrect type "
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r"\(expected datetime.tzinfo, got str\)"
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)
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with pytest.raises(TypeError, match=msg):
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Timestamp("2017-10-22", tzinfo="US/Eastern")
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msg = "at most one of"
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with pytest.raises(ValueError, match=msg):
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Timestamp("2017-10-22", tzinfo=pytz.utc, tz="UTC")
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msg = "Cannot pass a date attribute keyword argument when passing a date string"
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with pytest.raises(ValueError, match=msg):
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# GH#5168
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# case where user tries to pass tz as an arg, not kwarg, gets
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# interpreted as `year`
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Timestamp("2012-01-01", "US/Pacific")
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def test_constructor_strptime(self):
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# GH25016
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# Test support for Timestamp.strptime
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fmt = "%Y%m%d-%H%M%S-%f%z"
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ts = "20190129-235348-000001+0000"
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msg = r"Timestamp.strptime\(\) is not implemented"
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with pytest.raises(NotImplementedError, match=msg):
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Timestamp.strptime(ts, fmt)
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def test_constructor_tz_or_tzinfo(self):
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# GH#17943, GH#17690, GH#5168
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stamps = [
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Timestamp(year=2017, month=10, day=22, tz="UTC"),
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Timestamp(year=2017, month=10, day=22, tzinfo=pytz.utc),
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Timestamp(year=2017, month=10, day=22, tz=pytz.utc),
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Timestamp(datetime(2017, 10, 22), tzinfo=pytz.utc),
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Timestamp(datetime(2017, 10, 22), tz="UTC"),
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Timestamp(datetime(2017, 10, 22), tz=pytz.utc),
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]
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assert all(ts == stamps[0] for ts in stamps)
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def test_constructor_positional_with_tzinfo(self):
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# GH#31929
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ts = Timestamp(2020, 12, 31, tzinfo=timezone.utc)
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expected = Timestamp("2020-12-31", tzinfo=timezone.utc)
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assert ts == expected
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@pytest.mark.parametrize("kwd", ["nanosecond", "microsecond", "second", "minute"])
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def test_constructor_positional_keyword_mixed_with_tzinfo(self, kwd, request):
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# TODO: if we passed microsecond with a keyword we would mess up
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# xref GH#45307
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if kwd != "nanosecond":
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# nanosecond is keyword-only as of 2.0, others are not
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mark = pytest.mark.xfail(reason="GH#45307")
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request.node.add_marker(mark)
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kwargs = {kwd: 4}
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ts = Timestamp(2020, 12, 31, tzinfo=timezone.utc, **kwargs)
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td_kwargs = {kwd + "s": 4}
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td = Timedelta(**td_kwargs)
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expected = Timestamp("2020-12-31", tz=timezone.utc) + td
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assert ts == expected
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def test_constructor_positional(self):
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# see gh-10758
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msg = (
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"'NoneType' object cannot be interpreted as an integer"
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if PY310
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else "an integer is required"
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)
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with pytest.raises(TypeError, match=msg):
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Timestamp(2000, 1)
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msg = "month must be in 1..12"
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with pytest.raises(ValueError, match=msg):
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Timestamp(2000, 0, 1)
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with pytest.raises(ValueError, match=msg):
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Timestamp(2000, 13, 1)
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msg = "day is out of range for month"
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with pytest.raises(ValueError, match=msg):
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Timestamp(2000, 1, 0)
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with pytest.raises(ValueError, match=msg):
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Timestamp(2000, 1, 32)
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# see gh-11630
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assert repr(Timestamp(2015, 11, 12)) == repr(Timestamp("20151112"))
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assert repr(Timestamp(2015, 11, 12, 1, 2, 3, 999999)) == repr(
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Timestamp("2015-11-12 01:02:03.999999")
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)
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def test_constructor_keyword(self):
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# GH 10758
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msg = "function missing required argument 'day'|Required argument 'day'"
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with pytest.raises(TypeError, match=msg):
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Timestamp(year=2000, month=1)
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msg = "month must be in 1..12"
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with pytest.raises(ValueError, match=msg):
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Timestamp(year=2000, month=0, day=1)
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with pytest.raises(ValueError, match=msg):
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Timestamp(year=2000, month=13, day=1)
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msg = "day is out of range for month"
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with pytest.raises(ValueError, match=msg):
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Timestamp(year=2000, month=1, day=0)
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with pytest.raises(ValueError, match=msg):
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Timestamp(year=2000, month=1, day=32)
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assert repr(Timestamp(year=2015, month=11, day=12)) == repr(
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Timestamp("20151112")
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)
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assert repr(
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Timestamp(
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year=2015,
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month=11,
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day=12,
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hour=1,
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minute=2,
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second=3,
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microsecond=999999,
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)
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) == repr(Timestamp("2015-11-12 01:02:03.999999"))
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def test_constructor_fromordinal(self):
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base = datetime(2000, 1, 1)
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ts = Timestamp.fromordinal(base.toordinal())
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assert base == ts
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assert base.toordinal() == ts.toordinal()
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ts = Timestamp.fromordinal(base.toordinal(), tz="US/Eastern")
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assert Timestamp("2000-01-01", tz="US/Eastern") == ts
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assert base.toordinal() == ts.toordinal()
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# GH#3042
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dt = datetime(2011, 4, 16, 0, 0)
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ts = Timestamp.fromordinal(dt.toordinal())
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assert ts.to_pydatetime() == dt
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# with a tzinfo
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stamp = Timestamp("2011-4-16", tz="US/Eastern")
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dt_tz = stamp.to_pydatetime()
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ts = Timestamp.fromordinal(dt_tz.toordinal(), tz="US/Eastern")
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assert ts.to_pydatetime() == dt_tz
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@pytest.mark.parametrize(
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"result",
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[
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Timestamp(datetime(2000, 1, 2, 3, 4, 5, 6), nanosecond=1),
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Timestamp(
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year=2000,
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month=1,
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day=2,
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hour=3,
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minute=4,
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second=5,
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microsecond=6,
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nanosecond=1,
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),
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Timestamp(
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year=2000,
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month=1,
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day=2,
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hour=3,
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minute=4,
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second=5,
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microsecond=6,
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nanosecond=1,
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tz="UTC",
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),
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Timestamp(2000, 1, 2, 3, 4, 5, 6, None, nanosecond=1),
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Timestamp(2000, 1, 2, 3, 4, 5, 6, tz=pytz.UTC, nanosecond=1),
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],
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)
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def test_constructor_nanosecond(self, result):
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# GH 18898
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# As of 2.0 (GH 49416), nanosecond should not be accepted positionally
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expected = Timestamp(datetime(2000, 1, 2, 3, 4, 5, 6), tz=result.tz)
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expected = expected + Timedelta(nanoseconds=1)
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assert result == expected
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@pytest.mark.parametrize("z", ["Z0", "Z00"])
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def test_constructor_invalid_Z0_isostring(self, z):
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# GH 8910
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msg = f"Unknown datetime string format, unable to parse: 2014-11-02 01:00{z}"
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with pytest.raises(ValueError, match=msg):
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Timestamp(f"2014-11-02 01:00{z}")
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@pytest.mark.parametrize(
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"arg",
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[
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"year",
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"month",
|
|
"day",
|
|
"hour",
|
|
"minute",
|
|
"second",
|
|
"microsecond",
|
|
"nanosecond",
|
|
],
|
|
)
|
|
def test_invalid_date_kwarg_with_string_input(self, arg):
|
|
kwarg = {arg: 1}
|
|
msg = "Cannot pass a date attribute keyword argument"
|
|
with pytest.raises(ValueError, match=msg):
|
|
Timestamp("2010-10-10 12:59:59.999999999", **kwarg)
|
|
|
|
def test_out_of_bounds_integer_value(self):
|
|
# GH#26651 check that we raise OutOfBoundsDatetime, not OverflowError
|
|
msg = str(Timestamp.max._value * 2)
|
|
with pytest.raises(OutOfBoundsDatetime, match=msg):
|
|
Timestamp(Timestamp.max._value * 2)
|
|
msg = str(Timestamp.min._value * 2)
|
|
with pytest.raises(OutOfBoundsDatetime, match=msg):
|
|
Timestamp(Timestamp.min._value * 2)
|
|
|
|
def test_out_of_bounds_value(self):
|
|
one_us = np.timedelta64(1).astype("timedelta64[us]")
|
|
|
|
# By definition we can't go out of bounds in [ns], so we
|
|
# convert the datetime64s to [us] so we can go out of bounds
|
|
min_ts_us = np.datetime64(Timestamp.min).astype("M8[us]") + one_us
|
|
max_ts_us = np.datetime64(Timestamp.max).astype("M8[us]")
|
|
|
|
# No error for the min/max datetimes
|
|
Timestamp(min_ts_us)
|
|
Timestamp(max_ts_us)
|
|
|
|
# We used to raise on these before supporting non-nano
|
|
us_val = NpyDatetimeUnit.NPY_FR_us.value
|
|
assert Timestamp(min_ts_us - one_us)._creso == us_val
|
|
assert Timestamp(max_ts_us + one_us)._creso == us_val
|
|
|
|
# https://github.com/numpy/numpy/issues/22346 for why
|
|
# we can't use the same construction as above with minute resolution
|
|
|
|
# too_low, too_high are the _just_ outside the range of M8[s]
|
|
too_low = np.datetime64("-292277022657-01-27T08:29", "m")
|
|
too_high = np.datetime64("292277026596-12-04T15:31", "m")
|
|
|
|
msg = "Out of bounds"
|
|
# One us less than the minimum is an error
|
|
with pytest.raises(ValueError, match=msg):
|
|
Timestamp(too_low)
|
|
|
|
# One us more than the maximum is an error
|
|
with pytest.raises(ValueError, match=msg):
|
|
Timestamp(too_high)
|
|
|
|
def test_out_of_bounds_string(self):
|
|
msg = "Cannot cast .* to unit='ns' without overflow"
|
|
with pytest.raises(ValueError, match=msg):
|
|
Timestamp("1676-01-01").as_unit("ns")
|
|
with pytest.raises(ValueError, match=msg):
|
|
Timestamp("2263-01-01").as_unit("ns")
|
|
|
|
ts = Timestamp("2263-01-01")
|
|
assert ts.unit == "s"
|
|
|
|
ts = Timestamp("1676-01-01")
|
|
assert ts.unit == "s"
|
|
|
|
def test_barely_out_of_bounds(self):
|
|
# GH#19529
|
|
# GH#19382 close enough to bounds that dropping nanos would result
|
|
# in an in-bounds datetime
|
|
msg = "Out of bounds nanosecond timestamp: 2262-04-11 23:47:16"
|
|
with pytest.raises(OutOfBoundsDatetime, match=msg):
|
|
Timestamp("2262-04-11 23:47:16.854775808")
|
|
|
|
def test_bounds_with_different_units(self):
|
|
out_of_bounds_dates = ("1677-09-21", "2262-04-12")
|
|
|
|
time_units = ("D", "h", "m", "s", "ms", "us")
|
|
|
|
for date_string in out_of_bounds_dates:
|
|
for unit in time_units:
|
|
dt64 = np.datetime64(date_string, unit)
|
|
ts = Timestamp(dt64)
|
|
if unit in ["s", "ms", "us"]:
|
|
# We can preserve the input unit
|
|
assert ts._value == dt64.view("i8")
|
|
else:
|
|
# we chose the closest unit that we _do_ support
|
|
assert ts._creso == NpyDatetimeUnit.NPY_FR_s.value
|
|
|
|
# With more extreme cases, we can't even fit inside second resolution
|
|
info = np.iinfo(np.int64)
|
|
msg = "Out of bounds nanosecond timestamp:"
|
|
for value in [info.min + 1, info.max]:
|
|
for unit in ["D", "h", "m"]:
|
|
dt64 = np.datetime64(value, unit)
|
|
with pytest.raises(OutOfBoundsDatetime, match=msg):
|
|
Timestamp(dt64)
|
|
|
|
in_bounds_dates = ("1677-09-23", "2262-04-11")
|
|
|
|
for date_string in in_bounds_dates:
|
|
for unit in time_units:
|
|
dt64 = np.datetime64(date_string, unit)
|
|
Timestamp(dt64)
|
|
|
|
@pytest.mark.parametrize("arg", ["001-01-01", "0001-01-01"])
|
|
def test_out_of_bounds_string_consistency(self, arg):
|
|
# GH 15829
|
|
msg = "Cannot cast 0001-01-01 00:00:00 to unit='ns' without overflow"
|
|
with pytest.raises(OutOfBoundsDatetime, match=msg):
|
|
Timestamp(arg).as_unit("ns")
|
|
|
|
ts = Timestamp(arg)
|
|
assert ts.unit == "s"
|
|
assert ts.year == ts.month == ts.day == 1
|
|
|
|
def test_min_valid(self):
|
|
# Ensure that Timestamp.min is a valid Timestamp
|
|
Timestamp(Timestamp.min)
|
|
|
|
def test_max_valid(self):
|
|
# Ensure that Timestamp.max is a valid Timestamp
|
|
Timestamp(Timestamp.max)
|
|
|
|
def test_now(self):
|
|
# GH#9000
|
|
ts_from_string = Timestamp("now")
|
|
ts_from_method = Timestamp.now()
|
|
ts_datetime = datetime.now()
|
|
|
|
ts_from_string_tz = Timestamp("now", tz="US/Eastern")
|
|
ts_from_method_tz = Timestamp.now(tz="US/Eastern")
|
|
|
|
# Check that the delta between the times is less than 1s (arbitrarily
|
|
# small)
|
|
delta = Timedelta(seconds=1)
|
|
assert abs(ts_from_method - ts_from_string) < delta
|
|
assert abs(ts_datetime - ts_from_method) < delta
|
|
assert abs(ts_from_method_tz - ts_from_string_tz) < delta
|
|
assert (
|
|
abs(
|
|
ts_from_string_tz.tz_localize(None)
|
|
- ts_from_method_tz.tz_localize(None)
|
|
)
|
|
< delta
|
|
)
|
|
|
|
def test_today(self):
|
|
ts_from_string = Timestamp("today")
|
|
ts_from_method = Timestamp.today()
|
|
ts_datetime = datetime.today()
|
|
|
|
ts_from_string_tz = Timestamp("today", tz="US/Eastern")
|
|
ts_from_method_tz = Timestamp.today(tz="US/Eastern")
|
|
|
|
# Check that the delta between the times is less than 1s (arbitrarily
|
|
# small)
|
|
delta = Timedelta(seconds=1)
|
|
assert abs(ts_from_method - ts_from_string) < delta
|
|
assert abs(ts_datetime - ts_from_method) < delta
|
|
assert abs(ts_from_method_tz - ts_from_string_tz) < delta
|
|
assert (
|
|
abs(
|
|
ts_from_string_tz.tz_localize(None)
|
|
- ts_from_method_tz.tz_localize(None)
|
|
)
|
|
< delta
|
|
)
|
|
|
|
@pytest.mark.parametrize("tz", [None, pytz.timezone("US/Pacific")])
|
|
def test_disallow_setting_tz(self, tz):
|
|
# GH 3746
|
|
ts = Timestamp("2010")
|
|
msg = "Cannot directly set timezone"
|
|
with pytest.raises(AttributeError, match=msg):
|
|
ts.tz = tz
|
|
|
|
@pytest.mark.parametrize("offset", ["+0300", "+0200"])
|
|
def test_construct_timestamp_near_dst(self, offset):
|
|
# GH 20854
|
|
expected = Timestamp(f"2016-10-30 03:00:00{offset}", tz="Europe/Helsinki")
|
|
result = Timestamp(expected).tz_convert("Europe/Helsinki")
|
|
assert result == expected
|
|
|
|
@pytest.mark.parametrize(
|
|
"arg", ["2013/01/01 00:00:00+09:00", "2013-01-01 00:00:00+09:00"]
|
|
)
|
|
def test_construct_with_different_string_format(self, arg):
|
|
# GH 12064
|
|
result = Timestamp(arg)
|
|
expected = Timestamp(datetime(2013, 1, 1), tz=pytz.FixedOffset(540))
|
|
assert result == expected
|
|
|
|
@pytest.mark.parametrize("box", [datetime, Timestamp])
|
|
def test_raise_tz_and_tzinfo_in_datetime_input(self, box):
|
|
# GH 23579
|
|
kwargs = {"year": 2018, "month": 1, "day": 1, "tzinfo": pytz.utc}
|
|
msg = "Cannot pass a datetime or Timestamp"
|
|
with pytest.raises(ValueError, match=msg):
|
|
Timestamp(box(**kwargs), tz="US/Pacific")
|
|
msg = "Cannot pass a datetime or Timestamp"
|
|
with pytest.raises(ValueError, match=msg):
|
|
Timestamp(box(**kwargs), tzinfo=pytz.timezone("US/Pacific"))
|
|
|
|
def test_dont_convert_dateutil_utc_to_pytz_utc(self):
|
|
result = Timestamp(datetime(2018, 1, 1), tz=tzutc())
|
|
expected = Timestamp(datetime(2018, 1, 1)).tz_localize(tzutc())
|
|
assert result == expected
|
|
|
|
def test_constructor_subclassed_datetime(self):
|
|
# GH 25851
|
|
# ensure that subclassed datetime works for
|
|
# Timestamp creation
|
|
class SubDatetime(datetime):
|
|
pass
|
|
|
|
data = SubDatetime(2000, 1, 1)
|
|
result = Timestamp(data)
|
|
expected = Timestamp(2000, 1, 1)
|
|
assert result == expected
|
|
|
|
def test_constructor_fromisocalendar(self):
|
|
# GH 30395
|
|
expected_timestamp = Timestamp("2000-01-03 00:00:00")
|
|
expected_stdlib = datetime.fromisocalendar(2000, 1, 1)
|
|
result = Timestamp.fromisocalendar(2000, 1, 1)
|
|
assert result == expected_timestamp
|
|
assert result == expected_stdlib
|
|
assert isinstance(result, Timestamp)
|
|
|
|
|
|
def test_constructor_ambigous_dst():
|
|
# GH 24329
|
|
# Make sure that calling Timestamp constructor
|
|
# on Timestamp created from ambiguous time
|
|
# doesn't change Timestamp.value
|
|
ts = Timestamp(1382835600000000000, tz="dateutil/Europe/London")
|
|
expected = ts._value
|
|
result = Timestamp(ts)._value
|
|
assert result == expected
|
|
|
|
|
|
@pytest.mark.parametrize("epoch", [1552211999999999872, 1552211999999999999])
|
|
def test_constructor_before_dst_switch(epoch):
|
|
# GH 31043
|
|
# Make sure that calling Timestamp constructor
|
|
# on time just before DST switch doesn't lead to
|
|
# nonexistent time or value change
|
|
ts = Timestamp(epoch, tz="dateutil/America/Los_Angeles")
|
|
result = ts.tz.dst(ts)
|
|
expected = timedelta(seconds=0)
|
|
assert Timestamp(ts)._value == epoch
|
|
assert result == expected
|
|
|
|
|
|
def test_timestamp_constructor_identity():
|
|
# Test for #30543
|
|
expected = Timestamp("2017-01-01T12")
|
|
result = Timestamp(expected)
|
|
assert result is expected
|
|
|
|
|
|
@pytest.mark.parametrize("kwargs", [{}, {"year": 2020}, {"year": 2020, "month": 1}])
|
|
def test_constructor_missing_keyword(kwargs):
|
|
# GH 31200
|
|
|
|
# The exact error message of datetime() depends on its version
|
|
msg1 = r"function missing required argument '(year|month|day)' \(pos [123]\)"
|
|
msg2 = r"Required argument '(year|month|day)' \(pos [123]\) not found"
|
|
msg = "|".join([msg1, msg2])
|
|
|
|
with pytest.raises(TypeError, match=msg):
|
|
Timestamp(**kwargs)
|
|
|
|
|
|
@pytest.mark.parametrize("nano", [-1, 1000])
|
|
def test_timestamp_nano_range(nano):
|
|
# GH 48255
|
|
with pytest.raises(ValueError, match="nanosecond must be in 0..999"):
|
|
Timestamp(year=2022, month=1, day=1, nanosecond=nano)
|
|
|
|
|
|
def test_non_nano_value():
|
|
# https://github.com/pandas-dev/pandas/issues/49076
|
|
result = Timestamp("1800-01-01", unit="s").value
|
|
# `.value` shows nanoseconds, even though unit is 's'
|
|
assert result == -5364662400000000000
|
|
|
|
# out-of-nanoseconds-bounds `.value` raises informative message
|
|
msg = (
|
|
r"Cannot convert Timestamp to nanoseconds without overflow. "
|
|
r"Use `.asm8.view\('i8'\)` to cast represent Timestamp in its "
|
|
r"own unit \(here, s\).$"
|
|
)
|
|
ts = Timestamp("0300-01-01")
|
|
with pytest.raises(OverflowError, match=msg):
|
|
ts.value
|
|
# check that the suggested workaround actually works
|
|
result = ts.asm8.view("i8")
|
|
assert result == -52700112000
|
|
|
|
|
|
def test_timestamp_constructor_invalid_fold_raise():
|
|
# Test forGH #25057
|
|
# Valid fold values are only [None, 0, 1]
|
|
msg = "Valid values for the fold argument are None, 0, or 1."
|
|
with pytest.raises(ValueError, match=msg):
|
|
Timestamp(123, fold=2)
|
|
|
|
|
|
def test_timestamp_constructor_pytz_fold_raise():
|
|
# Test for GH#25057
|
|
# pytz doesn't support fold. Check that we raise
|
|
# if fold is passed with pytz
|
|
msg = "pytz timezones do not support fold. Please use dateutil timezones."
|
|
tz = pytz.timezone("Europe/London")
|
|
with pytest.raises(ValueError, match=msg):
|
|
Timestamp(datetime(2019, 10, 27, 0, 30, 0, 0), tz=tz, fold=0)
|
|
|
|
|
|
@pytest.mark.parametrize("fold", [0, 1])
|
|
@pytest.mark.parametrize(
|
|
"ts_input",
|
|
[
|
|
1572136200000000000,
|
|
1572136200000000000.0,
|
|
np.datetime64(1572136200000000000, "ns"),
|
|
"2019-10-27 01:30:00+01:00",
|
|
datetime(2019, 10, 27, 0, 30, 0, 0, tzinfo=timezone.utc),
|
|
],
|
|
)
|
|
def test_timestamp_constructor_fold_conflict(ts_input, fold):
|
|
# Test for GH#25057
|
|
# Check that we raise on fold conflict
|
|
msg = (
|
|
"Cannot pass fold with possibly unambiguous input: int, float, "
|
|
"numpy.datetime64, str, or timezone-aware datetime-like. "
|
|
"Pass naive datetime-like or build Timestamp from components."
|
|
)
|
|
with pytest.raises(ValueError, match=msg):
|
|
Timestamp(ts_input=ts_input, fold=fold)
|
|
|
|
|
|
@pytest.mark.parametrize("tz", ["dateutil/Europe/London", None])
|
|
@pytest.mark.parametrize("fold", [0, 1])
|
|
def test_timestamp_constructor_retain_fold(tz, fold):
|
|
# Test for GH#25057
|
|
# Check that we retain fold
|
|
ts = Timestamp(year=2019, month=10, day=27, hour=1, minute=30, tz=tz, fold=fold)
|
|
result = ts.fold
|
|
expected = fold
|
|
assert result == expected
|
|
|
|
|
|
_tzs = ["dateutil/Europe/London"]
|
|
if PY39:
|
|
try:
|
|
_tzs = ["dateutil/Europe/London", zoneinfo.ZoneInfo("Europe/London")]
|
|
except zoneinfo.ZoneInfoNotFoundError:
|
|
pass
|
|
|
|
|
|
@pytest.mark.parametrize("tz", _tzs)
|
|
@pytest.mark.parametrize(
|
|
"ts_input,fold_out",
|
|
[
|
|
(1572136200000000000, 0),
|
|
(1572139800000000000, 1),
|
|
("2019-10-27 01:30:00+01:00", 0),
|
|
("2019-10-27 01:30:00+00:00", 1),
|
|
(datetime(2019, 10, 27, 1, 30, 0, 0, fold=0), 0),
|
|
(datetime(2019, 10, 27, 1, 30, 0, 0, fold=1), 1),
|
|
],
|
|
)
|
|
def test_timestamp_constructor_infer_fold_from_value(tz, ts_input, fold_out):
|
|
# Test for GH#25057
|
|
# Check that we infer fold correctly based on timestamps since utc
|
|
# or strings
|
|
ts = Timestamp(ts_input, tz=tz)
|
|
result = ts.fold
|
|
expected = fold_out
|
|
assert result == expected
|
|
|
|
|
|
@pytest.mark.parametrize("tz", ["dateutil/Europe/London"])
|
|
@pytest.mark.parametrize(
|
|
"ts_input,fold,value_out",
|
|
[
|
|
(datetime(2019, 10, 27, 1, 30, 0, 0), 0, 1572136200000000),
|
|
(datetime(2019, 10, 27, 1, 30, 0, 0), 1, 1572139800000000),
|
|
],
|
|
)
|
|
def test_timestamp_constructor_adjust_value_for_fold(tz, ts_input, fold, value_out):
|
|
# Test for GH#25057
|
|
# Check that we adjust value for fold correctly
|
|
# based on timestamps since utc
|
|
ts = Timestamp(ts_input, tz=tz, fold=fold)
|
|
result = ts._value
|
|
expected = value_out
|
|
assert result == expected
|