&& expiredTime.longValue() < ComponentUtil.getSystemHelper().getCurrentTimeAsLong()) {
                    throw new InvalidAccessTokenException("invalid_token",
                            "The token is expired(" + FessFunctions.formatDate(FessFunctions.date(expiredTime)) + ").");
                }

        // GIVEN an invalid token for AUTH_DATA_PAC
        byte[] invalidToken = "invalid-pac-token".getBytes();

        // WHEN parsing the auth data
        // THEN a PACDecodingException should be thrown
        assertThrows(PACDecodingException.class, () -> {
            KerberosAuthData.parse(KerberosConstants.AUTH_DATA_PAC, invalidToken, mockKeys);
        }, "Parsing an invalid PAC token should throw a PACDecodingException.");