Method test_bad_zones

Lib/test/test_zoneinfo/test_zoneinfo.py:251–262

(self)

                self.klass(bad_key)

    def test_bad_zones(self):
        bad_zones = [
            b"",  # Empty file
            b"AAAA3" + b" " * 15,  # Bad magic
            # Truncated V2 file (should not loop indefinitely)
            b"TZif2" + (b"\x00" * 39) + b"TZif2" + (b"\x00" * 39) + b"\n" + b"Part",
        ]

        for bad_zone in bad_zones:
            fobj = io.BytesIO(bad_zone)
            with self.assertRaises(ValueError):
                self.klass.from_file(fobj)

    def test_fromutc_errors(self):
        key = next(iter(self.zones()))