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Current File : //usr/local/python-3.12/lib/python3.12/site-packages/pandas/tests/arrays/period/test_reductions.py
import pytest

import pandas as pd
from pandas.core.arrays import period_array


class TestReductions:
    def test_min_max(self):
        arr = period_array(
            [
                "2000-01-03",
                "2000-01-03",
                "NaT",
                "2000-01-02",
                "2000-01-05",
                "2000-01-04",
            ],
            freq="D",
        )

        result = arr.min()
        expected = pd.Period("2000-01-02", freq="D")
        assert result == expected

        result = arr.max()
        expected = pd.Period("2000-01-05", freq="D")
        assert result == expected

        result = arr.min(skipna=False)
        assert result is pd.NaT

        result = arr.max(skipna=False)
        assert result is pd.NaT

    @pytest.mark.parametrize("skipna", [True, False])
    def test_min_max_empty(self, skipna):
        arr = period_array([], freq="D")
        result = arr.min(skipna=skipna)
        assert result is pd.NaT

        result = arr.max(skipna=skipna)
        assert result is pd.NaT

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