import pytest
import sys
import os
sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
from slic.utils.trinary import *

def test_check_trinary_valid_values():
    # These calls should not raise any exception and return None
    assert check_trinary(True) is None
    assert check_trinary(False) is None
    assert check_trinary(None) is None
    assert check_trinary(0) is None
    assert check_trinary(1) is None

def test_check_trinary_invalid_value():
    # These values are not allowed and should raise ValueError
    with pytest.raises(ValueError, match=r"Trinary .+ not in"):
        check_trinary("yes")

    with pytest.raises(ValueError):
        check_trinary([])

def test_check_trinary_with_custom_allowed_values():
    # Valid custom values should pass without error
    assert check_trinary("maybe", allowed_values=("yes", "no", "maybe")) is None
    assert check_trinary("yes", allowed_values=("yes", "no", "maybe")) is None

    # Invalid custom value should raise ValueError
    with pytest.raises(ValueError):
        check_trinary("never", allowed_values=("yes", "no", "maybe"))