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| from datetime import datetime
|
| from dateutil.tz.tz import tzlocal
| import pytest
|
| from pandas._libs.tslibs import (
| OutOfBoundsDatetime,
| Timestamp,
| )
| from pandas.compat import (
| IS64,
| is_platform_windows,
| )
|
| from pandas.tseries.offsets import (
| FY5253,
| BDay,
| BMonthBegin,
| BMonthEnd,
| BQuarterBegin,
| BQuarterEnd,
| BusinessHour,
| BYearBegin,
| BYearEnd,
| CBMonthBegin,
| CBMonthEnd,
| CDay,
| CustomBusinessHour,
| DateOffset,
| FY5253Quarter,
| LastWeekOfMonth,
| MonthBegin,
| MonthEnd,
| QuarterEnd,
| SemiMonthBegin,
| SemiMonthEnd,
| Week,
| WeekOfMonth,
| YearBegin,
| YearEnd,
| )
|
|
| def _get_offset(klass, value=1, normalize=False):
| # create instance from offset class
| if klass is FY5253:
| klass = klass(
| n=value,
| startingMonth=1,
| weekday=1,
| variation="last",
| normalize=normalize,
| )
| elif klass is FY5253Quarter:
| klass = klass(
| n=value,
| startingMonth=1,
| weekday=1,
| qtr_with_extra_week=1,
| variation="last",
| normalize=normalize,
| )
| elif klass is LastWeekOfMonth:
| klass = klass(n=value, weekday=5, normalize=normalize)
| elif klass is WeekOfMonth:
| klass = klass(n=value, week=1, weekday=5, normalize=normalize)
| elif klass is Week:
| klass = klass(n=value, weekday=5, normalize=normalize)
| elif klass is DateOffset:
| klass = klass(days=value, normalize=normalize)
| else:
| klass = klass(value, normalize=normalize)
| return klass
|
|
| @pytest.fixture(
| params=[
| BDay,
| BusinessHour,
| BMonthEnd,
| BMonthBegin,
| BQuarterEnd,
| BQuarterBegin,
| BYearEnd,
| BYearBegin,
| CDay,
| CustomBusinessHour,
| CBMonthEnd,
| CBMonthBegin,
| MonthEnd,
| MonthBegin,
| SemiMonthBegin,
| SemiMonthEnd,
| QuarterEnd,
| LastWeekOfMonth,
| WeekOfMonth,
| Week,
| YearBegin,
| YearEnd,
| FY5253,
| FY5253Quarter,
| DateOffset,
| ]
| )
| def _offset(request):
| return request.param
|
|
| @pytest.fixture
| def dt(_offset):
| if _offset in (CBMonthBegin, CBMonthEnd, BDay):
| return Timestamp(2008, 1, 1)
| elif _offset is (CustomBusinessHour, BusinessHour):
| return Timestamp(2014, 7, 1, 10, 00)
| return Timestamp(2008, 1, 2)
|
|
| def test_apply_out_of_range(request, tz_naive_fixture, _offset):
| tz = tz_naive_fixture
|
| # try to create an out-of-bounds result timestamp; if we can't create
| # the offset skip
| try:
| if _offset in (BusinessHour, CustomBusinessHour):
| # Using 10000 in BusinessHour fails in tz check because of DST
| # difference
| offset = _get_offset(_offset, value=100000)
| else:
| offset = _get_offset(_offset, value=10000)
|
| result = Timestamp("20080101") + offset
| assert isinstance(result, datetime)
| assert result.tzinfo is None
|
| # Check tz is preserved
| t = Timestamp("20080101", tz=tz)
| result = t + offset
| assert isinstance(result, datetime)
| if tz is not None:
| assert t.tzinfo is not None
|
| if isinstance(tz, tzlocal) and not IS64 and _offset is not DateOffset:
| # If we hit OutOfBoundsDatetime on non-64 bit machines
| # we'll drop out of the try clause before the next test
| request.node.add_marker(
| pytest.mark.xfail(reason="OverflowError inside tzlocal past 2038")
| )
| elif (
| isinstance(tz, tzlocal)
| and is_platform_windows()
| and _offset in (QuarterEnd, BQuarterBegin, BQuarterEnd)
| ):
| request.node.add_marker(
| pytest.mark.xfail(reason="After GH#49737 t.tzinfo is None on CI")
| )
| assert str(t.tzinfo) == str(result.tzinfo)
|
| except OutOfBoundsDatetime:
| pass
| except (ValueError, KeyError):
| # we are creating an invalid offset
| # so ignore
| pass
|
|
| def test_offsets_compare_equal(_offset):
| # root cause of GH#456: __ne__ was not implemented
| offset1 = _offset()
| offset2 = _offset()
| assert not offset1 != offset2
| assert offset1 == offset2
|
|
| @pytest.mark.parametrize(
| "date, offset2",
| [
| [Timestamp(2008, 1, 1), BDay(2)],
| [Timestamp(2014, 7, 1, 10, 00), BusinessHour(n=3)],
| [
| Timestamp(2014, 7, 1, 10),
| CustomBusinessHour(
| holidays=["2014-06-27", Timestamp(2014, 6, 30), Timestamp("2014-07-02")]
| ),
| ],
| [Timestamp(2008, 1, 2), SemiMonthEnd(2)],
| [Timestamp(2008, 1, 2), SemiMonthBegin(2)],
| [Timestamp(2008, 1, 2), Week(2)],
| [Timestamp(2008, 1, 2), WeekOfMonth(2)],
| [Timestamp(2008, 1, 2), LastWeekOfMonth(2)],
| ],
| )
| def test_rsub(date, offset2):
| assert date - offset2 == (-offset2)._apply(date)
|
|
| @pytest.mark.parametrize(
| "date, offset2",
| [
| [Timestamp(2008, 1, 1), BDay(2)],
| [Timestamp(2014, 7, 1, 10, 00), BusinessHour(n=3)],
| [
| Timestamp(2014, 7, 1, 10),
| CustomBusinessHour(
| holidays=["2014-06-27", Timestamp(2014, 6, 30), Timestamp("2014-07-02")]
| ),
| ],
| [Timestamp(2008, 1, 2), SemiMonthEnd(2)],
| [Timestamp(2008, 1, 2), SemiMonthBegin(2)],
| [Timestamp(2008, 1, 2), Week(2)],
| [Timestamp(2008, 1, 2), WeekOfMonth(2)],
| [Timestamp(2008, 1, 2), LastWeekOfMonth(2)],
| ],
| )
| def test_radd(date, offset2):
| assert date + offset2 == offset2 + date
|
|
| @pytest.mark.parametrize(
| "date, offset_box, offset2",
| [
| [Timestamp(2008, 1, 1), BDay, BDay(2)],
| [Timestamp(2008, 1, 2), SemiMonthEnd, SemiMonthEnd(2)],
| [Timestamp(2008, 1, 2), SemiMonthBegin, SemiMonthBegin(2)],
| [Timestamp(2008, 1, 2), Week, Week(2)],
| [Timestamp(2008, 1, 2), WeekOfMonth, WeekOfMonth(2)],
| [Timestamp(2008, 1, 2), LastWeekOfMonth, LastWeekOfMonth(2)],
| ],
| )
| def test_sub(date, offset_box, offset2):
| off = offset2
| msg = "Cannot subtract datetime from offset"
| with pytest.raises(TypeError, match=msg):
| off - date
|
| assert 2 * off - off == off
| assert date - offset2 == date + offset_box(-2)
| assert date - offset2 == date - (2 * off - off)
|
|
| @pytest.mark.parametrize(
| "offset_box, offset1",
| [
| [BDay, BDay()],
| [LastWeekOfMonth, LastWeekOfMonth()],
| [WeekOfMonth, WeekOfMonth()],
| [Week, Week()],
| [SemiMonthBegin, SemiMonthBegin()],
| [SemiMonthEnd, SemiMonthEnd()],
| [CustomBusinessHour, CustomBusinessHour(weekmask="Tue Wed Thu Fri")],
| [BusinessHour, BusinessHour()],
| ],
| )
| def test_Mult1(offset_box, offset1, dt):
| assert dt + 10 * offset1 == dt + offset_box(10)
| assert dt + 5 * offset1 == dt + offset_box(5)
|
|
| def test_compare_str(_offset):
| # GH#23524
| # comparing to strings that cannot be cast to DateOffsets should
| # not raise for __eq__ or __ne__
| off = _get_offset(_offset)
|
| assert not off == "infer"
| assert off != "foo"
| # Note: inequalities are only implemented for Tick subclasses;
| # tests for this are in test_ticks
|
|
