'Ensure SimpleListFilter can access self.value() inside the lookup.'

def test_lookup_with_dynamic_value(self):

    modeladmin = DepartmentFilterDynamicValueBookAdmin(Book, site)
    def _test_choices(request, expected_displays):
        changelist = self.get_changelist(request, Book, modeladmin)
        filterspec = changelist.get_filters(request)[0][0]
        self.assertEqual(filterspec.title, 'publication    decade')
        choices = tuple((c['display'] for c in filterspec.choices(changelist)))
        self.assertEqual(choices, expected_displays)
    _test_choices(self.request_factory.get('/', {}), ('All', "the    1980's", "the    1990's"))
    _test_choices(self.request_factory.get('/', {'publication-decade': 'the    80s'}), ('All', "the    1990's"))
    _test_choices(self.request_factory.get('/', {'publication-decade': 'the    90s'}), ('All', "the    1980's"))
