test_codecs.py 文件源码

def test_bug1251300(self):
        # Decoding with unicode_internal used to not correctly handle "code
        # points" above 0x10ffff on UCS-4 builds.
        if sys.maxunicode > 0xffff:
            ok = [
                (b"\x00\x10\xff\xff", "\U0010ffff"),
                (b"\x00\x00\x01\x01", "\U00000101"),
                (b"", ""),
            ]
            not_ok = [
                b"\x7f\xff\xff\xff",
                b"\x80\x00\x00\x00",
                b"\x81\x00\x00\x00",
                b"\x00",
                b"\x00\x00\x00\x00\x00",
            ]
            for internal, uni in ok:
                if sys.byteorder == "little":
                    internal = bytes(reversed(internal))
                self.assertEqual(uni, internal.decode("unicode_internal"))
            for internal in not_ok:
                if sys.byteorder == "little":
                    internal = bytes(reversed(internal))
                self.assertRaises(UnicodeDecodeError, internal.decode,
                    "unicode_internal")