    @Test
    public void testNotYetValidCertificate() throws Exception {

        InputStream EntryToken = new FileInputStream("src/test/ts/EntryToken-future-cert-self-signed.tsml");
        XMLDsigVerificationResult result = new XMLDSigVerifier().VerifyXMLDSig(EntryToken);
        assert(!result.isValid);
        assert(result.failureReason.contains("NotBefore")); // save travis from misreporting thanks to timezone
    }