1 files changed, 25 insertions, 0 deletions
diff --git a/src/network/test-networkd-address.c b/src/network/test-networkd-address.c
new file mode 100644
index 0000000..a40c571
--- /dev/null
+++ b/src/network/test-networkd-address.c
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "networkd-address.h"
+#include "tests.h"
+#include "time-util.h"
+
+static void test_FORMAT_LIFETIME_one(usec_t lifetime, const char *expected) {
+        const char *t = FORMAT_LIFETIME(lifetime);
+
+        log_debug(USEC_FMT " → \"%s\" (expected \"%s\")", lifetime, t, expected);
+        assert_se(streq(t, expected));
+}
+
+TEST(FORMAT_LIFETIME) {
+        usec_t now_usec;
+
+        now_usec = now(CLOCK_BOOTTIME);
+
+        test_FORMAT_LIFETIME_one(now_usec, "for 0");
+        test_FORMAT_LIFETIME_one(usec_add(now_usec, 2 * USEC_PER_SEC - 1), "for 1s");
+        test_FORMAT_LIFETIME_one(usec_add(now_usec, 3 * USEC_PER_WEEK + USEC_PER_SEC - 1), "for 3w");
+        test_FORMAT_LIFETIME_one(USEC_INFINITY, "forever");
+}
+
+DEFINE_TEST_MAIN(LOG_DEBUG);