Add unit test for max_early_data_size of ticket

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index eb2407d..07f1d97 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -2042,6 +2042,12 @@
                                restored.resumption_key,
                                original.resumption_key_len) == 0);
         }
+
+#if defined(MBEDTLS_SSL_EARLY_DATA)
+        TEST_ASSERT(
+            original.max_early_data_size == restored.max_early_data_size);
+#endif
+
 #if defined(MBEDTLS_HAVE_TIME) && defined(MBEDTLS_SSL_SRV_C)
         if (endpoint_type == MBEDTLS_SSL_IS_SERVER) {
             TEST_ASSERT(original.start == restored.start);