test_types_extras.py 文件源码

def test_cast_numbers(self):
        from psycopg2.extras import NumericRange
        cur = self.conn.cursor()
        for type in ('int4range', 'int8range'):
            cur.execute("select '(10,20)'::%s" % type)
            r = cur.fetchone()[0]
            self.assert_(isinstance(r, NumericRange))
            self.assert_(not r.isempty)
            self.assertEqual(r.lower, 11)
            self.assertEqual(r.upper, 20)
            self.assert_(not r.lower_inf)
            self.assert_(not r.upper_inf)
            self.assert_(r.lower_inc)
            self.assert_(not r.upper_inc)

        cur.execute("select '(10.2,20.6)'::numrange")
        r = cur.fetchone()[0]
        self.assert_(isinstance(r, NumericRange))
        self.assert_(not r.isempty)
        self.assertEqual(r.lower, Decimal('10.2'))
        self.assertEqual(r.upper, Decimal('20.6'))
        self.assert_(not r.lower_inf)
        self.assert_(not r.upper_inf)
        self.assert_(not r.lower_inc)
        self.assert_(not r.upper_inc)