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| """
| Tests for offsets.BDay
| """
| from __future__ import annotations
|
| from datetime import (
| date,
| datetime,
| timedelta,
| )
|
| import numpy as np
| import pytest
|
| from pandas._libs.tslibs.offsets import (
| ApplyTypeError,
| BDay,
| BMonthEnd,
| )
|
| from pandas import (
| DatetimeIndex,
| Timedelta,
| _testing as tm,
| )
| from pandas.tests.tseries.offsets.common import (
| assert_is_on_offset,
| assert_offset_equal,
| )
|
| from pandas.tseries import offsets
|
|
| @pytest.fixture
| def dt():
| return datetime(2008, 1, 1)
|
|
| @pytest.fixture
| def _offset():
| return BDay
|
|
| @pytest.fixture
| def offset(_offset):
| return _offset()
|
|
| @pytest.fixture
| def offset2(_offset):
| return _offset(2)
|
|
| class TestBusinessDay:
| def test_different_normalize_equals(self, _offset, offset2):
| # GH#21404 changed __eq__ to return False when `normalize` does not match
| offset = _offset()
| offset2 = _offset(normalize=True)
| assert offset != offset2
|
| def test_repr(self, offset, offset2):
| assert repr(offset) == "<BusinessDay>"
| assert repr(offset2) == "<2 * BusinessDays>"
|
| expected = "<BusinessDay: offset=datetime.timedelta(days=1)>"
| assert repr(offset + timedelta(1)) == expected
|
| def test_with_offset(self, dt, offset):
| offset = offset + timedelta(hours=2)
|
| assert (dt + offset) == datetime(2008, 1, 2, 2)
|
| @pytest.mark.parametrize(
| "td",
| [
| Timedelta(hours=2),
| Timedelta(hours=2).to_pytimedelta(),
| Timedelta(hours=2).to_timedelta64(),
| ],
| ids=lambda x: type(x),
| )
| def test_with_offset_index(self, td, dt, offset):
| dti = DatetimeIndex([dt])
| expected = DatetimeIndex([datetime(2008, 1, 2, 2)])
|
| result = dti + (td + offset)
| tm.assert_index_equal(result, expected)
|
| result = dti + (offset + td)
| tm.assert_index_equal(result, expected)
|
| def test_eq(self, offset2):
| assert offset2 == offset2
|
| def test_hash(self, offset2):
| assert hash(offset2) == hash(offset2)
|
| def test_add_datetime(self, dt, offset2):
| assert offset2 + dt == datetime(2008, 1, 3)
| assert offset2 + np.datetime64("2008-01-01 00:00:00") == datetime(2008, 1, 3)
|
| def testRollback1(self, dt, _offset):
| assert _offset(10).rollback(dt) == dt
|
| def testRollback2(self, _offset):
| assert _offset(10).rollback(datetime(2008, 1, 5)) == datetime(2008, 1, 4)
|
| def testRollforward1(self, dt, _offset):
| assert _offset(10).rollforward(dt) == dt
|
| def testRollforward2(self, _offset):
| assert _offset(10).rollforward(datetime(2008, 1, 5)) == datetime(2008, 1, 7)
|
| def test_roll_date_object(self, offset):
| dt = date(2012, 9, 15)
|
| result = offset.rollback(dt)
| assert result == datetime(2012, 9, 14)
|
| result = offset.rollforward(dt)
| assert result == datetime(2012, 9, 17)
|
| offset = offsets.Day()
| result = offset.rollback(dt)
| assert result == datetime(2012, 9, 15)
|
| result = offset.rollforward(dt)
| assert result == datetime(2012, 9, 15)
|
| @pytest.mark.parametrize(
| "dt, expected",
| [
| (datetime(2008, 1, 1), True),
| (datetime(2008, 1, 5), False),
| ],
| )
| def test_is_on_offset(self, offset, dt, expected):
| assert_is_on_offset(offset, dt, expected)
|
| apply_cases: list[tuple[int, dict[datetime, datetime]]] = [
| (
| 1,
| {
| datetime(2008, 1, 1): datetime(2008, 1, 2),
| datetime(2008, 1, 4): datetime(2008, 1, 7),
| datetime(2008, 1, 5): datetime(2008, 1, 7),
| datetime(2008, 1, 6): datetime(2008, 1, 7),
| datetime(2008, 1, 7): datetime(2008, 1, 8),
| },
| ),
| (
| 2,
| {
| datetime(2008, 1, 1): datetime(2008, 1, 3),
| datetime(2008, 1, 4): datetime(2008, 1, 8),
| datetime(2008, 1, 5): datetime(2008, 1, 8),
| datetime(2008, 1, 6): datetime(2008, 1, 8),
| datetime(2008, 1, 7): datetime(2008, 1, 9),
| },
| ),
| (
| -1,
| {
| datetime(2008, 1, 1): datetime(2007, 12, 31),
| datetime(2008, 1, 4): datetime(2008, 1, 3),
| datetime(2008, 1, 5): datetime(2008, 1, 4),
| datetime(2008, 1, 6): datetime(2008, 1, 4),
| datetime(2008, 1, 7): datetime(2008, 1, 4),
| datetime(2008, 1, 8): datetime(2008, 1, 7),
| },
| ),
| (
| -2,
| {
| datetime(2008, 1, 1): datetime(2007, 12, 28),
| datetime(2008, 1, 4): datetime(2008, 1, 2),
| datetime(2008, 1, 5): datetime(2008, 1, 3),
| datetime(2008, 1, 6): datetime(2008, 1, 3),
| datetime(2008, 1, 7): datetime(2008, 1, 3),
| datetime(2008, 1, 8): datetime(2008, 1, 4),
| datetime(2008, 1, 9): datetime(2008, 1, 7),
| },
| ),
| (
| 0,
| {
| datetime(2008, 1, 1): datetime(2008, 1, 1),
| datetime(2008, 1, 4): datetime(2008, 1, 4),
| datetime(2008, 1, 5): datetime(2008, 1, 7),
| datetime(2008, 1, 6): datetime(2008, 1, 7),
| datetime(2008, 1, 7): datetime(2008, 1, 7),
| },
| ),
| ]
|
| @pytest.mark.parametrize("case", apply_cases)
| def test_apply(self, case, _offset):
| n, cases = case
| offset = _offset(n)
| for base, expected in cases.items():
| assert_offset_equal(offset, base, expected)
|
| def test_apply_large_n(self, _offset):
| dt = datetime(2012, 10, 23)
|
| result = dt + _offset(10)
| assert result == datetime(2012, 11, 6)
|
| result = dt + _offset(100) - _offset(100)
| assert result == dt
|
| off = _offset() * 6
| rs = datetime(2012, 1, 1) - off
| xp = datetime(2011, 12, 23)
| assert rs == xp
|
| st = datetime(2011, 12, 18)
| rs = st + off
| xp = datetime(2011, 12, 26)
| assert rs == xp
|
| off = _offset() * 10
| rs = datetime(2014, 1, 5) + off # see #5890
| xp = datetime(2014, 1, 17)
| assert rs == xp
|
| def test_apply_corner(self, _offset):
| if _offset is BDay:
| msg = "Only know how to combine business day with datetime or timedelta"
| else:
| msg = (
| "Only know how to combine trading day "
| "with datetime, datetime64 or timedelta"
| )
| with pytest.raises(ApplyTypeError, match=msg):
| _offset()._apply(BMonthEnd())
|
|
