[v9_9] Refactor RDATA unit tests

4667.	[cleanup]	Refactor RDATA unit tests. [RT #45610]

(cherry picked from commit 41620b94c4)

CHANGES

@@ -1,3 +1,5 @@
+4667.	[cleanup]	Refactor RDATA unit tests. [RT #45610]
+
 4665.	[protocol]	Added support for ED25519 and ED448 DNSSEC signing
 			algorithms (RFC 8080). (Note: these algorithms
 			depend on code currently in the development branch

bin/tests/Makefile.in

@@ -80,7 +80,6 @@ XTARGETS =	adb_test@EXEEXT@ \
 		nsecify@EXEEXT@ \
 		ratelimiter_test@EXEEXT@ \
 		rbt_test@EXEEXT@ \
-		rdata_test@EXEEXT@ \
 		rwlock_test@EXEEXT@ \
 		serial_test@EXEEXT@ \
 		shutdown_test@EXEEXT@ \
@@ -120,7 +119,6 @@ XSRCS =		adb_test.c \
 		nsecify.c \
 		ratelimiter_test.c \
 		rbt_test.c \
-		rdata_test.c \
 		rwlock_test.c \
 		serial_test.c \
 		shutdown_test.c \
@@ -238,10 +236,6 @@ rbt_test@EXEEXT@: rbt_test.@O@ ${ISCDEPLIBS} ${DNSDEPLIBS}
 	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ rbt_test.@O@ \
 		${DNSLIBS} ${ISCLIBS} ${LIBS}
 
-rdata_test@EXEEXT@: rdata_test.@O@ ${ISCDEPLIBS} ${DNSDEPLIBS}
-	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ rdata_test.@O@ \
-		${DNSLIBS} ${ISCLIBS} ${LIBS}
-
 rwlock_test@EXEEXT@: rwlock_test.@O@ ${ISCDEPLIBS}
 	${LIBTOOL_MODE_LINK} ${PURIFY} ${CC} ${CFLAGS} ${LDFLAGS} -o $@ rwlock_test.@O@ \
 		${ISCLIBS} ${LIBS}

lib/dns/tests/dnstest.c

@@ -20,6 +20,8 @@
 
 #include <config.h>
 
+#include <atf-c.h>
+
 #include <time.h>
 #include <unistd.h>
 
@@ -27,6 +29,7 @@
 #include <isc/buffer.h>
 #include <isc/entropy.h>
 #include <isc/hash.h>
+#include <isc/hex.h>
 #include <isc/mem.h>
 #include <isc/os.h>
 #include <isc/string.h>
@@ -326,3 +329,26 @@ dns_test_loaddb(dns_db_t **db, dns_dbtype_t dbtype, const char *origin,
 	result = dns_db_load(*db, testfile);
 	return (result);
 }
+
+/*
+ * Format contents of given memory region as a hex string, using the buffer
+ * of length 'buflen' pointed to by 'buf'. 'buflen' must be at least three
+ * times 'len'. Always returns 'buf'.
+ */
+char *
+dns_test_tohex(const unsigned char *data, size_t len, char *buf, size_t buflen)
+{
+	isc_constregion_t source = {
+		.base = data,
+		.length = len
+	};
+	isc_buffer_t target;
+	isc_result_t result;
+
+	memset(buf, 0, buflen);
+	isc_buffer_init(&target, buf, buflen);
+	result = isc_hex_totext((isc_region_t *)&source, 1, " ", &target);
+	ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
+
+	return (buf);
+}

lib/dns/tests/dnstest.h

@@ -14,8 +14,6 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id$ */
-
 /*! \file */
 
 #include <config.h>
@@ -80,3 +78,6 @@ dns_test_nap(isc_uint32_t usec);
 isc_result_t
 dns_test_loaddb(dns_db_t **db, dns_dbtype_t dbtype, const char *origin,
 		const char *testfile);
+
+char *
+dns_test_tohex(const unsigned char *data, size_t len, char *buf, size_t buflen);