test_tempfile.py 文件源码

def test_properties(self):
        f = tempfile.SpooledTemporaryFile(max_size=10)
        f.write(b'x' * 10)
        self.assertFalse(f._rolled)
        self.assertEqual(f.mode, 'w+b')
        self.assertIsNone(f.name)
        with self.assertRaises(AttributeError):
            f.newlines
        with self.assertRaises(AttributeError):
            f.encoding

        f.write(b'x')
        self.assertTrue(f._rolled)
        self.assertEqual(f.mode, 'rb+')
        self.assertIsNotNone(f.name)
        with self.assertRaises(AttributeError):
            f.newlines
        with self.assertRaises(AttributeError):
            f.encoding