SettingsTestCaseMixin

Nested settings test

class XMPPSettingsTestCase(SettingsTestCaseMixin, TestCase):

    nested_setting = 'XMPP_SETTINGS'

    SETTINGS = (
        ('host', basestring),
        ('conference_host', basestring),
        ('endpoint', basestring),
        ('archive_timezone', (basestring, datetime.tzinfo)),
    )

SettingsTestCaseMixin

class SettingsTestCaseMixin(object):

    nested_setting = False
    """Support settings keys that are directories."""

    SETTINGS = ()
    """An iterable of (<setting_name>, <setting_type_or_types_tuple>)."""

    def _get_test_setting(self, setting):
        if self.nested_setting:
            return getattr(settings, self.nested_setting)[setting]
        else:
            return getattr(settings, setting)

    def _has_test_setting(self, setting):
        if self.nested_setting:
            return setting in getattr(settings, self.nested_setting)
        else:
            return hasattr(settings, setting)

    def test_setting_type(self):
        for setting, setting_type in self.SETTINGS:
            self.assertTrue(
                isinstance(self._get_test_setting(setting), setting_type),
                "Setting {} is not of type {}, but {}".format(
                    setting, setting_type, type(setting),
                ))

    def test_settings_keys(self):
        for setting, setting_type in self.SETTINGS:
            self.assertTrue(
                self._has_test_setting(setting),
                "Setting {} not found in settings".format(setting))

    def test_mixin_configuration(self):
        if self.nested_setting:
            self.assertTrue(isinstance(self.nested_setting, basestring))
            self.assertTrue(hasattr(settings, self.nested_setting))
            self.assertTrue(
                isinstance(getattr(settings, self.nested_setting), dict))
        for setting in self.SETTINGS:
            self.assertEqual(len(setting), 2)
            self.assertTrue(isinstance(setting[0], basestring))
            self.assertTrue(isinstance(setting[1], (type, tuple)))
            if isinstance(setting[1], tuple):
                for stype in setting[1]:
                    self.assertTrue(isinstance(stype, type))

Simple settings test

class AccountsSettingsTestCase(SettingsTestCaseMixin, TestCase):

    SETTINGS = (
        ('USER_STATUS_THROTTLE', datetime.timedelta),
        ('AGENT_WORK_DAY_DEFALT_DURATION', datetime.timedelta),
        ('AGENT_WORK_DAY_DEFALT_BREAK_DURATION', datetime.timedelta),
        ('AGENT_WORK_DAY_DEFALT_HOURLY_BREAK_DURATION', datetime.timedelta),
    )