pandas-stubs/tests/test_natype.py at c61f7506aee4f6af97763e500242cd864cf2b6a7 · MarcoGorelli/pandas-stubs · GitHub

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from typing import (
    Literal,
)

import pandas as pd
from pandas.api.typing import NAType
from pandas.core.arrays.boolean import BooleanArray
from typing_extensions import assert_type

from tests import check


def test_arithmetic() -> None:
    na = pd.NA

    s_int = pd.Series([1, 2, 3], dtype="Int64")
    idx_int: pd.Index[int] = pd.Index([1, 2, 3], dtype="Int64")

    # __add__
    check(assert_type(na + s_int, pd.Series), pd.Series)
    check(assert_type(na + idx_int, pd.Index), pd.Index)
    check(assert_type(na + 1, NAType), NAType)

    # __radd__
    check(assert_type(s_int + na, pd.Series), pd.Series)
    # requires orthogonal fix: https://github.com/pandas-dev/pandas-stubs/issues/1347
    # check(assert_type(idx_int + na, pd.Index), pd.Index)
    check(assert_type(1 + na, NAType), NAType)

    # __sub__
    check(assert_type(na - s_int, pd.Series), pd.Series)
    check(assert_type(na - idx_int, pd.Index), pd.Index)
    check(assert_type(na - 1, NAType), NAType)

    # __rsub__
    check(assert_type(s_int - na, pd.Series), pd.Series)
    # requires orthogonal fix: https://github.com/pandas-dev/pandas-stubs/issues/1347
    # check(assert_type(idx_int - na, pd.Index), pd.Index)
    check(assert_type(1 - na, NAType), NAType)

    # __mul__
    check(assert_type(na * s_int, pd.Series), pd.Series)
    check(assert_type(na * idx_int, pd.Index), pd.Index)
    check(assert_type(na * 1, NAType), NAType)

    # __rmul__
    check(assert_type(s_int * na, pd.Series), pd.Series)
    # requires orthogonal fix: https://github.com/pandas-dev/pandas-stubs/issues/1347
    # check(assert_type(idx_int * na, pd.Index), pd.Index)
    check(assert_type(1 * na, NAType), NAType)

    # __matmul__
    check(assert_type(na @ 1, NAType), NAType)

    # __rmatmul__
    check(assert_type(1 @ na, NAType), NAType)

    # __truediv__
    check(assert_type(na / s_int, pd.Series), pd.Series)
    check(assert_type(na / idx_int, pd.Index), pd.Index)
    check(assert_type(na / 1, NAType), NAType)

    # __rtruediv__
    check(assert_type(s_int / na, pd.Series), pd.Series)
    check(assert_type(idx_int / na, pd.Index), pd.Index)
    check(assert_type(1 / na, NAType), NAType)

    # __floordiv__
    check(assert_type(na // s_int, pd.Series), pd.Series)
    check(assert_type(na // idx_int, pd.Index), pd.Index)
    check(assert_type(na // 1, NAType), NAType)

    # __rfloordiv__
    check(assert_type(s_int // na, pd.Series), pd.Series)
    check(assert_type(idx_int // na, pd.Index), pd.Index)
    check(assert_type(1 // na, NAType), NAType)

    # __mod__
    check(assert_type(na % s_int, pd.Series), pd.Series)
    check(assert_type(na % idx_int, pd.Index), pd.Index)
    check(assert_type(na % 1, NAType), NAType)

    # __rmod__
    check(assert_type(s_int % na, pd.Series), pd.Series)
    # requires orthogonal fix: https://github.com/pandas-dev/pandas-stubs/issues/1347
    # check(assert_type(idx_int % na, pd.Index), pd.Index)
    check(assert_type(1 % na, NAType), NAType)

    # __divmod__
    # bug upstream: https://github.com/pandas-dev/pandas/issues/62196
    # check(
    #     assert_type(
    #         divmod(na, s_int),
    #         tuple[pd.Series, pd.Series],
    #     ),
    #     tuple,
    # )
    # check(
    #     assert_type(
    #         divmod(na, idx_int),
    #         tuple[pd.Index, pd.Index],
    #     ),
    #     tuple,
    # )
    # https://github.com/microsoft/pyright/issues/10899.
    check(
        assert_type(divmod(na, 1), tuple[NAType, NAType]), tuple
    )  # pyright: ignore[reportArgumentType, reportCallIssue, reportAssertTypeFailure]

    # __rdivmod__
    # bug upstream: https://github.com/pandas-dev/pandas/issues/62196
    # check(
    #     assert_type(divmod(s_int, na), tuple[pd.Series, pd.Series]),
    #     tuple,
    # )
    # https://github.com/pandas-dev/pandas-stubs/issues/1347
    # check(
    #     assert_type(divmod(idx_int, na), tuple[pd.Index, pd.Index]),
    #     tuple,
    # )
    check(assert_type(divmod(1, na), tuple[NAType, NAType]), tuple)

    # __eq__
    check(assert_type(na == s_int, "pd.Series[bool]"), pd.Series)
    check(assert_type(na == idx_int, BooleanArray), BooleanArray)
    check(assert_type(na == 1, NAType), NAType)

    # __ne__
    check(assert_type(na != s_int, "pd.Series[bool]"), pd.Series)
    check(assert_type(na != idx_int, BooleanArray), BooleanArray)
    check(assert_type(na != 1, NAType), NAType)

    # __le__
    check(assert_type(na <= s_int, "pd.Series[bool]"), pd.Series)
    check(assert_type(na <= idx_int, BooleanArray), BooleanArray)
    check(assert_type(na <= 1, NAType), NAType)

    # __lt__
    check(assert_type(na < s_int, "pd.Series[bool]"), pd.Series)
    check(assert_type(na < idx_int, BooleanArray), BooleanArray)
    check(assert_type(na < 1, NAType), NAType)

    # __gt__
    check(assert_type(na > s_int, "pd.Series[bool]"), pd.Series)
    check(assert_type(na > idx_int, BooleanArray), BooleanArray)
    check(assert_type(na > 1, NAType), NAType)

    # __ge__
    check(assert_type(na >= s_int, "pd.Series[bool]"), pd.Series)
    check(assert_type(na >= idx_int, BooleanArray), BooleanArray)
    check(assert_type(na >= 1, NAType), NAType)

    # __pow__
    check(assert_type(na**s_int, pd.Series), pd.Series)
    check(assert_type(na**idx_int, pd.Index), pd.Index)
    check(assert_type(na**2, NAType), NAType)

    # __rpow__
    check(assert_type(s_int**na, pd.Series), pd.Series)
    # requires orthogonal fix: https://github.com/pandas-dev/pandas-stubs/issues/1347
    # check(assert_type(idx_int**na, pd.Index), pd.Index)
    check(assert_type(2**na, NAType), NAType)

    # __and__
    check(assert_type(na & False, Literal[False]), bool)
    check(assert_type(na & True, NAType), NAType)
    check(assert_type(na & na, NAType), NAType)

    # __rand__
    check(assert_type(False & na, Literal[False]), bool)
    check(assert_type(True & na, NAType), NAType)

    # __or__
    check(assert_type(na | False, NAType), NAType)
    check(assert_type(na | True, Literal[True]), bool)

    # __ror__
    check(assert_type(False | na, NAType), NAType)
    check(assert_type(True | na, Literal[True]), bool)

    # __xor__
    check(assert_type(na ^ s_int, pd.Series), pd.Series)
    check(assert_type(na ^ idx_int, pd.Index), pd.Index)

    # rxor
    check(assert_type(s_int ^ na, pd.Series), pd.Series)
    check(assert_type(idx_int ^ na, pd.Index), pd.Index)