"""Tests für sn_basis/functions/os_wrapper.py::is_case_sensitive_fs (Issue #67)."""

import unittest
from unittest.mock import patch

from sn_basis.functions import os_wrapper


class IsCaseSensitiveFsTests(unittest.TestCase):
    def test_windows_ist_nicht_case_sensitiv(self):
        """Prüft, dass Windows als nicht case-sensitives Dateisystem gilt."""
        with patch.object(os_wrapper, "IS_WINDOWS", True), patch.object(os_wrapper, "IS_MACOS", False):
            self.assertFalse(os_wrapper.is_case_sensitive_fs())

    def test_macos_ist_nicht_case_sensitiv(self):
        """Prüft, dass macOS als nicht case-sensitives Dateisystem gilt."""
        with patch.object(os_wrapper, "IS_WINDOWS", False), patch.object(os_wrapper, "IS_MACOS", True):
            self.assertFalse(os_wrapper.is_case_sensitive_fs())

    def test_linux_ist_case_sensitiv(self):
        """Prüft, dass Linux als case-sensitives Dateisystem gilt."""
        with patch.object(os_wrapper, "IS_WINDOWS", False), patch.object(os_wrapper, "IS_MACOS", False):
            self.assertTrue(os_wrapper.is_case_sensitive_fs())


if __name__ == "__main__":
    unittest.main()