import pytest
from app.functions.split_number import split_number


@pytest.mark.parametrize("n, expected", [
    (4, (2, 2)),  # even number split into equal parts
    (5, (2, 3)),  # odd number split into (n // 2) and (n // 2 + 1)
    (0, (0, 0)),  # zero case
    (-4, (-2, -2)),  # negative even number
    (-5, (-3, -2))  # negative odd number
])
def test_split_number(n, expected):
    assert split_number(n) == expected