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31 lines
751 B
31 lines
751 B
from datetime import timedelta
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from pandas import (
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Index,
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Timestamp,
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date_range,
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isna,
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)
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import pandas._testing as tm
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class TestAsOf:
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def test_asof_partial(self):
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index = date_range("2010-01-01", periods=2, freq="m")
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expected = Timestamp("2010-02-28")
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result = index.asof("2010-02")
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assert result == expected
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assert not isinstance(result, Index)
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def test_asof(self):
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index = tm.makeDateIndex(100)
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dt = index[0]
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assert index.asof(dt) == dt
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assert isna(index.asof(dt - timedelta(1)))
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dt = index[-1]
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assert index.asof(dt + timedelta(1)) == dt
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dt = index[0].to_pydatetime()
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assert isinstance(index.asof(dt), Timestamp)
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