From bb5adffdff71192d1aeac72723e179d3801f3c94 Mon Sep 17 00:00:00 2001
From: Peter Limkilde Svendsen <peter.limkilde@gmail.com>
Date: Fri, 6 Sep 2024 22:28:24 +0200
Subject: [PATCH] Test endian.h macros

---
 tests/endian.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/tests/endian.c b/tests/endian.c
index 951b43932f..2eeb7cdab0 100644
--- a/tests/endian.c
+++ b/tests/endian.c
@@ -61,4 +61,15 @@ int main() {
     assert(htobe64(u64_ne) == u64_be);
     assert(htole64(u64_ne) == u64_le);
     assert(le64toh(u64_le) == u64_ne);
+
+    /* Test that the BYTE_ORDER, LITTLE_ENDIAN and BIG_ENDIAN macros are available */
+    /* It is in principle possible to have further endiannesses, like PDP_ENDIAN */
+    if (u64_ne == u64_le) {
+        assert(BYTE_ORDER == LITTLE_ENDIAN);
+        assert(BYTE_ORDER != BIG_ENDIAN);
+    }
+    if (u64_ne == u64_be) {
+        assert(BYTE_ORDER == BIG_ENDIAN);
+        assert(BYTE_ORDER != LITTLE_ENDIAN);
+    }
 }