58 lines
1.1 KiB
Python
58 lines
1.1 KiB
Python
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"""
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Tests for offset behavior with indices.
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"""
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import pytest
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from pandas import (
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Series,
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date_range,
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)
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from pandas.tseries.offsets import (
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BMonthBegin,
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BMonthEnd,
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BQuarterBegin,
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BQuarterEnd,
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BYearBegin,
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BYearEnd,
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MonthBegin,
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MonthEnd,
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QuarterBegin,
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QuarterEnd,
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YearBegin,
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YearEnd,
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)
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@pytest.mark.parametrize("n", [-2, 1])
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@pytest.mark.parametrize(
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"cls",
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[
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MonthBegin,
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MonthEnd,
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BMonthBegin,
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BMonthEnd,
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QuarterBegin,
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QuarterEnd,
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BQuarterBegin,
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BQuarterEnd,
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YearBegin,
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YearEnd,
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BYearBegin,
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BYearEnd,
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],
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)
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def test_apply_index(cls, n):
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offset = cls(n=n)
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rng = date_range(start="1/1/2000", periods=100000, freq="T")
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ser = Series(rng)
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res = rng + offset
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assert res.freq is None # not retained
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assert res[0] == rng[0] + offset
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assert res[-1] == rng[-1] + offset
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res2 = ser + offset
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# apply_index is only for indexes, not series, so no res2_v2
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assert res2.iloc[0] == ser.iloc[0] + offset
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assert res2.iloc[-1] == ser.iloc[-1] + offset
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