'Test if settings service returns default if setting not found'

@override_settings(XBLOCK_SETTINGS={xblock_setting_key2: {'b': 1}})
def test_get_returns_none_or_default_if_bucket_not_found(self):

    self.assertEqual(settings.XBLOCK_SETTINGS, {self.xblock_setting_key2: {'b': 1}})
    self.assertEqual(self.settings_service.get_settings_bucket(self.xblock_mock), {})
    self.assertEqual(self.settings_service.get_settings_bucket(self.xblock_mock, 123), 123)
