Add ticket creation time to TLS 1.2 session serialization

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/src/test_helpers/ssl_helpers.c b/tests/src/test_helpers/ssl_helpers.c
index 8f20fa6..c0c5ca4 100644
--- a/tests/src/test_helpers/ssl_helpers.c
+++ b/tests/src/test_helpers/ssl_helpers.c
@@ -1639,6 +1639,8 @@
                                             int endpoint_type,
                                             const char *crt_file)
 {
+    (void) ticket_len;
+
 #if defined(MBEDTLS_HAVE_TIME)
     session->start = mbedtls_time(NULL) - 42;
 #endif
@@ -1710,7 +1712,8 @@
 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED && MBEDTLS_FS_IO */
     session->verify_result = 0xdeadbeef;
 
-#if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C)
+#if defined(MBEDTLS_SSL_SESSION_TICKETS)
+#if defined(MBEDTLS_SSL_CLI_C)
     if (ticket_len != 0) {
         session->ticket = mbedtls_calloc(1, ticket_len);
         if (session->ticket == NULL) {
@@ -1720,9 +1723,14 @@
     }
     session->ticket_len = ticket_len;
     session->ticket_lifetime = 86401;
-#else
-    (void) ticket_len;
+#endif /* MBEDTLS_SSL_CLI_C */
+
+#if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_HAVE_TIME)
+    if (session->endpoint == MBEDTLS_SSL_IS_SERVER) {
+        session->ticket_creation_time = mbedtls_ms_time() - 42;
+    }
 #endif
+#endif /* MBEDTLS_SSL_SESSION_TICKETS */
 
 #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
     session->mfl_code = 1;