private static Date parseDate(String dateString) {
    if (dateString == null) return null;
    Matcher m = secondsSinceEpochPattern.matcher(dateString);
    if (m.matches()) {
        return new Date(Long.parseLong(dateString) * 1000);
    }
    for (DateParser format : allowableInputFormats){
        try {
            return format.parse(dateString);
        }
        catch (ParseException ex) {
        }
    }
    return null;
}
 

@Test
public void CreateJwt_ExplicitNotBeforeTime() throws Exception {
    String notBeforeString = "2017-08-14T11:00:21.269-0700";
    Map properties = new HashMap();
    properties.put("algorithm", "RS256");
    properties.put("debug", "true");
    properties.put("not-before", notBeforeString);
    properties.put("private-key", privateKeyMap.get("rsa-private-3"));
    properties.put("expiresIn", "300"); // seconds
    properties.put("claim_testname", "CreateJwt_ExplicitNotBeforeTime");
    properties.put("claim_jti", java.util.UUID.randomUUID().toString());

    JwtCreatorCallout callout = new JwtCreatorCallout(properties);
    ExecutionResult result = callout.execute(msgCtxt, exeCtxt);

    // check result and output
    Assert.assertEquals(result, ExecutionResult.SUCCESS);

    // retrieve and check output
    String jwt = msgCtxt.getVariable("jwt_jwt");
    System.out.println("jwt: " + jwt);
    String jwtClaims = msgCtxt.getVariable("jwt_claims");
    Assert.assertNotNull(jwtClaims, "jwt_claims");
    System.out.println("claims: " + jwtClaims);

    JsonNode claimsNode = om.readTree(jwtClaims);
    String nbfAsText = claimsNode.get("nbf").asText();
    Assert.assertNotNull(nbfAsText, "nbf");

    DateParser dp = FastDateFormat.getInstance("yyyy-MM-dd'T'HH:mm:ss.SSSZ", TimeZone.getTimeZone("UTC"));
    Date notBefore = dp.parse(notBeforeString);
    int secondsNbfExpected = (int) (notBefore.getTime()/1000);
    int secondsNbfActual = Integer.parseInt(nbfAsText);
    Assert.assertEquals( secondsNbfActual, secondsNbfExpected, "nbf");
}