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42 lines
1.0 KiB
42 lines
1.0 KiB
import pytest
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import pandas as pd
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from pandas.core.arrays import period_array
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class TestReductions:
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def test_min_max(self):
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arr = period_array(
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[
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"2000-01-03",
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"2000-01-03",
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"NaT",
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"2000-01-02",
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"2000-01-05",
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"2000-01-04",
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],
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freq="D",
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)
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result = arr.min()
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expected = pd.Period("2000-01-02", freq="D")
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assert result == expected
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result = arr.max()
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expected = pd.Period("2000-01-05", freq="D")
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assert result == expected
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result = arr.min(skipna=False)
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assert result is pd.NaT
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result = arr.max(skipna=False)
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assert result is pd.NaT
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@pytest.mark.parametrize("skipna", [True, False])
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def test_min_max_empty(self, skipna):
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arr = period_array([], freq="D")
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result = arr.min(skipna=skipna)
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assert result is pd.NaT
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result = arr.max(skipna=skipna)
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assert result is pd.NaT
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