import sys

from types import ModuleType

from django.conf import CSRF_COOKIE_MASKED_DEPRECATED_MSG, Settings, settings

from django.test import SimpleTestCase

from django.utils.deprecation import RemovedInDjango50Warning

class CsrfCookieMaskedDeprecationTests(SimpleTestCase):

    msg = CSRF_COOKIE_MASKED_DEPRECATED_MSG

    def test_override_settings_warning(self):

        with self.assertRaisesMessage(RemovedInDjango50Warning, self.msg):

            with self.settings(CSRF_COOKIE_MASKED=True):

                pass

    def test_settings_init_warning(self):

        settings_module = ModuleType("fake_settings_module")

        settings_module.USE_TZ = False

        settings_module.CSRF_COOKIE_MASKED = True

        sys.modules["fake_settings_module"] = settings_module

        try:

            with self.assertRaisesMessage(RemovedInDjango50Warning, self.msg):

                Settings("fake_settings_module")

        finally:

            del sys.modules["fake_settings_module"]

    def test_access(self):

        # Warning is not raised on access.

        self.assertEqual(settings.CSRF_COOKIE_MASKED, False)