'Ensure we can sort on a list_display field that is a Model method
(colunn 3 is \'model_year\' in ArticleAdmin)'

def testChangeListSortingModel(self):

    response = self.client.get(('/test_admin/%s/admin_views/article/' % self.urlbit), {'ot': 'dsc', 'o': 3})
    self.assertEqual(response.status_code, 200)
    self.assertTrue(((response.content.index('Newest    content') < response.content.index('Middle    content')) and (response.content.index('Middle    content') < response.content.index('Oldest    content'))), 'Results    of    sorting    on    Model    method    are    out    of    order.')
