test_querysetsequence.py 文件源码

def test_single_element(self):
        """Single element."""
        qss = self.all._clone()
        result = qss[0]
        self.assertEqual(result.title, 'Fiction')
        self.assertIsInstance(result, Book)
        # qss never gets evaluated since the underlying QuerySet is used.
        self.assertIsNone(qss._result_cache)