From b58e0061e0c6ca44e445b7191d9437fd7609f315 Mon Sep 17 00:00:00 2001
From: Erik Ekman <erik@kryo.se>
Date: Tue, 23 Jun 2020 20:47:05 +0200
Subject: [PATCH] unit: Improve message when the mem heap has usage

Show "mem heap still has 216 bytes allocated"
instead of "Assertion 'lwip_stats.mem.used == 0' failed"
---
 test/unit/lwip_unittests.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/test/unit/lwip_unittests.c b/test/unit/lwip_unittests.c
index 3cb4a885..5b8d523f 100644
--- a/test/unit/lwip_unittests.c
+++ b/test/unit/lwip_unittests.c
@@ -50,7 +50,8 @@ void lwip_check_ensure_no_alloc(unsigned int skip)
   unsigned int mask;
 
   if (!(skip & SKIP_HEAP)) {
-    fail_unless(lwip_stats.mem.used == 0);
+    fail_unless(lwip_stats.mem.used == 0,
+      "mem heap still has %d bytes allocated", lwip_stats.mem.used);
   }
   for (i = 0, mask = 1; i < MEMP_MAX; i++, mask <<= 1) {
     if (!(skip & mask)) {