exercise dns_rdata_additionaldata

(cherry picked from commit 649a34d628)

lib/dns/tests/rdata_test.c

@@ -160,7 +160,8 @@ wire_to_rdata(const unsigned char *src, size_t srclen,
  * Call dns_rdata_towire() for rdata and write to result to dst.
  */
 static isc_result_t
-rdata_towire(dns_rdata_t *rdata, unsigned char *dst, size_t dstlen, size_t *length)
+rdata_towire(dns_rdata_t *rdata, unsigned char *dst, size_t dstlen,
+	     size_t *length)
 {
 	isc_buffer_t target;
 	dns_compress_t cctx;
@@ -183,6 +184,22 @@ rdata_towire(dns_rdata_t *rdata, unsigned char *dst, size_t dstlen, size_t *leng
 	return (result);
 }
 
+static isc_result_t
+additionaldata_cb(void *arg, dns_name_t *name, dns_rdatatype_t qtype) {
+	UNUSED(arg);
+	UNUSED(name);
+	UNUSED(qtype);
+	return (ISC_R_SUCCESS);
+}
+
+/*
+ * call dns_rdata_additionaldata() for rdata.
+ */
+static isc_result_t
+rdata_additionadata(dns_rdata_t *rdata) {
+	return (dns_rdata_additionaldata(rdata, additionaldata_cb, NULL));
+}
+
 /*
  * Test whether converting rdata to a type-specific struct and then back to
  * rdata results in the same uncompressed wire form.  This checks whether
@@ -309,6 +326,12 @@ check_text_ok_single(const text_ok_t *text_ok, dns_rdataclass_t rdclass,
 	assert_int_equal(rdata.length, length);
 	assert_memory_equal(rdata.data, buf_towire, length);
 
+	/*
+	 * Test that additionaldata_*() succeeded.
+	 */
+	result = rdata_additionadata(&rdata);
+	assert_int_equal(result, ISC_R_SUCCESS);
+
 	/*
 	 * Perform two-way conversion checks between uncompressed wire form and
 	 * type-specific struct.
@@ -466,6 +489,12 @@ check_wire_ok_single(const wire_ok_t *wire_ok, dns_rdataclass_t rdclass,
 	assert_int_equal(result, ISC_R_SUCCESS);
 	assert_int_equal(rdata.length, length);
 	assert_memory_equal(rdata.data, buf_towire, length);
+
+	/*
+	 * Test that additionaldata_*() succeeded.
+	 */
+	result = rdata_additionadata(&rdata);
+	assert_int_equal(result, ISC_R_SUCCESS);
 }
 
 /*