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-rw-r--r--src/resolve/test-resolved-packet.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/src/resolve/test-resolved-packet.c b/src/resolve/test-resolved-packet.c
new file mode 100644
index 0000000..dd8c969
--- /dev/null
+++ b/src/resolve/test-resolved-packet.c
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "log.h"
+#include "resolved-dns-packet.h"
+#include "tests.h"
+
+TEST(dns_packet_new) {
+ size_t i;
+ _cleanup_(dns_packet_unrefp) DnsPacket *p2 = NULL;
+
+ for (i = 0; i <= DNS_PACKET_SIZE_MAX; i++) {
+ _cleanup_(dns_packet_unrefp) DnsPacket *p = NULL;
+
+ assert_se(dns_packet_new(&p, DNS_PROTOCOL_DNS, i, DNS_PACKET_SIZE_MAX) == 0);
+
+ log_debug("dns_packet_new: %zu → %zu", i, p->allocated);
+ assert_se(p->allocated >= MIN(DNS_PACKET_SIZE_MAX, i));
+
+ if (i > DNS_PACKET_SIZE_START + 10 && i < DNS_PACKET_SIZE_MAX - 10)
+ i = MIN(i * 2, DNS_PACKET_SIZE_MAX - 10);
+ }
+
+ assert_se(dns_packet_new(&p2, DNS_PROTOCOL_DNS, DNS_PACKET_SIZE_MAX + 1, DNS_PACKET_SIZE_MAX) == -EFBIG);
+}
+
+DEFINE_TEST_MAIN(LOG_DEBUG);