From 94dd2bab7c916ab0811abe74ab60ca2620e82fe1 Mon Sep 17 00:00:00 2001
From: James Coglan <james@neighbourhood.ie>
Date: Tue, 25 Jun 2024 15:14:08 +0100
Subject: [PATCH] resolved: tests for link_relevant()

---
 src/resolve/test-resolved-link.c | 55 ++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/src/resolve/test-resolved-link.c b/src/resolve/test-resolved-link.c
index dc748410e9..56094ad009 100644
--- a/src/resolve/test-resolved-link.c
+++ b/src/resolve/test-resolved-link.c
@@ -1,5 +1,8 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 
+#include <net/if.h>
+#include <linux/if.h>
+
 #include "netlink-internal.h"
 #include "resolved-link.h"
 #include "resolved-manager.h"
@@ -42,4 +45,56 @@ TEST(link_process_rtnl) {
         ASSERT_OK(link_process_rtnl(link, msg));
 }
 
+/* ================================================================
+ * link_relevant()
+ * ================================================================ */
+
+TEST(link_relevant) {
+        Manager manager = {};
+        LinkAddress *address = NULL;
+        _cleanup_(link_freep) Link *link = NULL;
+
+        ASSERT_OK(link_new(&manager, &link, 1));
+        ASSERT_NOT_NULL(link);
+
+        link->flags = IFF_LOOPBACK;
+        ASSERT_FALSE(link_relevant(link, AF_INET, true));
+        ASSERT_FALSE(link_relevant(link, AF_INET, false));
+
+        link->flags = IFF_UP;
+        ASSERT_FALSE(link_relevant(link, AF_INET, true));
+        ASSERT_FALSE(link_relevant(link, AF_INET, false));
+
+        link->flags = IFF_UP | IFF_LOWER_UP;
+        ASSERT_FALSE(link_relevant(link, AF_INET, true));
+        ASSERT_FALSE(link_relevant(link, AF_INET, false));
+
+        link->flags = IFF_UP | IFF_LOWER_UP | IFF_MULTICAST;
+        link->operstate = IF_OPER_UP;
+
+        ASSERT_FALSE(link_relevant(link, AF_INET, true));
+        ASSERT_FALSE(link_relevant(link, AF_INET, false));
+
+        union in_addr_union ip = { .in.s_addr = htobe32(0xc0a84301) };
+        union in_addr_union bcast = { .in.s_addr = htobe32(0xc0a843ff) };
+
+        ASSERT_OK(link_address_new(link, &address, AF_INET, &ip, &bcast));
+        ASSERT_NOT_NULL(address);
+
+        ASSERT_TRUE(link_relevant(link, AF_INET, true));
+        ASSERT_TRUE(link_relevant(link, AF_INET, false));
+
+        link->flags = IFF_UP | IFF_LOWER_UP;
+        ASSERT_FALSE(link_relevant(link, AF_INET, true));
+        ASSERT_TRUE(link_relevant(link, AF_INET, false));
+
+        link->is_managed = true;
+        ASSERT_FALSE(link_relevant(link, AF_INET, false));
+
+        link->networkd_operstate = LINK_OPERSTATE_DEGRADED_CARRIER;
+        ASSERT_TRUE(link_relevant(link, AF_INET, false));
+
+        link_address_free(address);
+}
+
 DEFINE_TEST_MAIN(LOG_DEBUG)
-- 
2.25.1