resolved: test for DNS_RESOURCE_RECORD_RDATA()

src/resolve/meson.build

@@ -171,6 +171,9 @@ executables += [
         resolve_test_template + {
                 'sources' : files('test-dns-packet-extract.c'),
         },
+        resolve_test_template + {
+                'sources' : files('test-dns-rr.c'),
+        },
         resolve_test_template + {
                 'sources' : files(
                         'test-resolved-etc-hosts.c',

src/resolve/test-dns-rr.c

@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "dns-type.h"
+#include "resolved-dns-rr.h"
+
+#include "log.h"
+#include "tests.h"
+
+/* ================================================================
+ * DNS_RESOURCE_RECORD_RDATA()
+ * ================================================================ */
+
+TEST(dns_resource_record_rdata) {
+        DnsResourceRecord rr = (DnsResourceRecord) {
+                .wire_format = (void *)"abcdefghi",
+                .wire_format_size = 9,
+                .wire_format_rdata_offset = 3
+        };
+
+        const void *ptr = DNS_RESOURCE_RECORD_RDATA(&rr);
+        ASSERT_STREQ(ptr, "defghi");
+
+        size_t size = DNS_RESOURCE_RECORD_RDATA_SIZE(&rr);
+        ASSERT_EQ(size, 6u);
+
+        rr.wire_format = NULL;
+
+        ptr = DNS_RESOURCE_RECORD_RDATA(&rr);
+        ASSERT_NULL(ptr);
+
+        size = DNS_RESOURCE_RECORD_RDATA_SIZE(&rr);
+        ASSERT_EQ(size, 0u);
+}
+
+DEFINE_TEST_MAIN(LOG_DEBUG);