tests: ssl: Add hostname checks in session serialization tests

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index b5367f5..840af7d 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -2134,6 +2134,12 @@
                                    restored.ticket,
                                    original.ticket_len) == 0);
             }
+#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
+            TEST_ASSERT(original.hostname != NULL);
+            TEST_ASSERT(restored.hostname != NULL);
+            TEST_MEMORY_COMPARE(original.hostname, strlen(original.hostname),
+                                restored.hostname, strlen(restored.hostname));
+#endif
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
         }
 #endif /* MBEDTLS_SSL_CLI_C */