@Test
public void testValidateRoleIPAddressNoIPs() throws IOException {

    Path path = Paths.get("src/test/resources/spiffe_role.csr");
    String csr = new String(Files.readAllBytes(path));
    X509RoleCertRequest certReq = new X509RoleCertRequest(csr);
    assertTrue(certReq.validateIPAddress(null, "10.10.11.12"));
}