Add basic tests for session resumption
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index 54c931a..d751411 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -1690,6 +1690,7 @@
         ssl->f_get_cache != NULL &&
         ssl->f_get_cache( ssl->p_get_cache, ssl->session_negotiate ) == 0 )
     {
+        SSL_DEBUG_MSG( 3, ( "session successfully restored from cache" ) );
         ssl->handshake->resume = 1;
     }