def test_articles(self):
"""
the article attribute should be read-only, and set the first time
it is called
"""
sr = SolrResponse(self.response.text)
self.assertIsNone(sr._articles)
self.assertEqual(len(sr.articles), 28)
self.assertEqual(sr._articles, sr.articles)
self.assertEqual(sr.articles[0].doi, [u'10.1126/science.174.4005.142'])
with self.assertRaises(AttributeError):
sr.articles = 'this should be read-only'
