'Any filter must define a title.'

def test_listfilter_without_title(self):

    modeladmin = DecadeFilterBookAdminWithoutTitle(Book, site)
    request = self.request_factory.get(u'/', {})
    six.assertRaisesRegex(self, ImproperlyConfigured, u"The    list    filter    'DecadeListFilterWithoutTitle'    does    not    specify    a    'title'.", self.get_changelist, request, Book, modeladmin)
