Adding upstream version 2.4.1.upstream/2.4.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

467 files changed, 29469 insertions, 0 deletions

diff --git a/src/lib/dns/tests/Makefile.am b/src/lib/dns/tests/Makefile.am
new file mode 100644
index 0000000..c89c3db
--- /dev/null
+++ b/src/lib/dns/tests/Makefile.am
@@ -0,0 +1,94 @@
+SUBDIRS = testdata .
+
+AM_CPPFLAGS = -I$(top_builddir)/src/lib -I$(top_srcdir)/src/lib
+AM_CPPFLAGS += $(BOOST_INCLUDES)
+AM_CPPFLAGS += -DTEST_DATA_SRCDIR=\"$(abs_top_srcdir)/src/lib/dns/tests/testdata\"
+AM_CPPFLAGS += -DTEST_DATA_BUILDDIR=\"$(abs_top_builddir)/src/lib/dns/tests/testdata\"
+AM_CXXFLAGS = $(KEA_CXXFLAGS)
+
+if USE_STATIC_LINK
+AM_LDFLAGS = -static
+endif
+
+CLEANFILES = *.gcno *.gcda
+
+TESTS_ENVIRONMENT = $(LIBTOOL) --mode=execute $(VALGRIND_COMMAND)
+
+TESTS =
+if HAVE_GTEST
+TESTS += run_unittests
+run_unittests_SOURCES = unittest_util.h unittest_util.cc
+run_unittests_SOURCES += dns_exceptions_unittest.cc
+run_unittests_SOURCES += edns_unittest.cc
+run_unittests_SOURCES += master_lexer_inputsource_unittest.cc
+run_unittests_SOURCES += labelsequence_unittest.cc
+run_unittests_SOURCES += messagerenderer_unittest.cc
+run_unittests_SOURCES += master_lexer_token_unittest.cc
+run_unittests_SOURCES += master_lexer_unittest.cc
+run_unittests_SOURCES += master_loader_unittest.cc
+run_unittests_SOURCES += master_lexer_state_unittest.cc
+run_unittests_SOURCES += name_unittest.cc
+run_unittests_SOURCES += nsec3hash_unittest.cc
+run_unittests_SOURCES += rrclass_unittest.cc rrtype_unittest.cc
+run_unittests_SOURCES += rrttl_unittest.cc
+run_unittests_SOURCES += rrcollator_unittest.cc
+run_unittests_SOURCES += opcode_unittest.cc
+run_unittests_SOURCES += rcode_unittest.cc
+run_unittests_SOURCES += rdata_unittest.h rdata_unittest.cc
+run_unittests_SOURCES += rdatafields_unittest.cc
+run_unittests_SOURCES += rdata_pimpl_holder_unittest.cc
+run_unittests_SOURCES += rdata_char_string_unittest.cc
+run_unittests_SOURCES += rdata_char_string_data_unittest.cc
+run_unittests_SOURCES += rdata_in_a_unittest.cc rdata_in_aaaa_unittest.cc
+run_unittests_SOURCES += rdata_ns_unittest.cc rdata_soa_unittest.cc
+run_unittests_SOURCES += rdata_txt_like_unittest.cc
+run_unittests_SOURCES += rdata_mx_unittest.cc
+run_unittests_SOURCES += rdata_sshfp_unittest.cc
+run_unittests_SOURCES += rdata_ptr_unittest.cc rdata_cname_unittest.cc
+run_unittests_SOURCES += rdata_dname_unittest.cc
+run_unittests_SOURCES += rdata_afsdb_unittest.cc
+run_unittests_SOURCES += rdata_opt_unittest.cc
+run_unittests_SOURCES += rdata_dhcid_unittest.cc
+run_unittests_SOURCES += rdata_dnskey_unittest.cc
+run_unittests_SOURCES += rdata_ds_like_unittest.cc
+run_unittests_SOURCES += rdata_nsec_unittest.cc
+run_unittests_SOURCES += rdata_nsec3_unittest.cc
+run_unittests_SOURCES += rdata_nsecbitmap_unittest.cc
+run_unittests_SOURCES += rdata_nsec3param_unittest.cc
+run_unittests_SOURCES += rdata_nsec3param_like_unittest.cc
+run_unittests_SOURCES += rdata_rrsig_unittest.cc
+run_unittests_SOURCES += rdata_rp_unittest.cc
+run_unittests_SOURCES += rdata_srv_unittest.cc
+run_unittests_SOURCES += rdata_tlsa_unittest.cc
+run_unittests_SOURCES += rdata_minfo_unittest.cc
+run_unittests_SOURCES += rdata_tsig_unittest.cc
+run_unittests_SOURCES += rdata_naptr_unittest.cc
+run_unittests_SOURCES += rdata_hinfo_unittest.cc
+run_unittests_SOURCES += rdata_caa_unittest.cc
+run_unittests_SOURCES += rdata_tkey_unittest.cc
+run_unittests_SOURCES += rrset_unittest.cc
+run_unittests_SOURCES += qid_gen_unittest.cc
+run_unittests_SOURCES += question_unittest.cc
+run_unittests_SOURCES += rrparamregistry_unittest.cc
+run_unittests_SOURCES += masterload_unittest.cc
+run_unittests_SOURCES += message_unittest.cc
+run_unittests_SOURCES += serial_unittest.cc
+run_unittests_SOURCES += tsig_unittest.cc
+run_unittests_SOURCES += tsigerror_unittest.cc
+run_unittests_SOURCES += tsigkey_unittest.cc
+run_unittests_SOURCES += tsigrecord_unittest.cc
+run_unittests_SOURCES += master_loader_callbacks_test.cc
+run_unittests_SOURCES += rrset_collection_unittest.cc
+run_unittests_SOURCES += zone_checker_unittest.cc
+run_unittests_SOURCES += run_unittests.cc
+run_unittests_CPPFLAGS = $(AM_CPPFLAGS) $(GTEST_INCLUDES)
+run_unittests_LDFLAGS = $(AM_LDFLAGS) $(CRYPTO_LDFLAGS) $(GTEST_LDFLAGS)
+run_unittests_LDADD  = $(top_builddir)/src/lib/dns/libkea-dns++.la
+run_unittests_LDADD += $(top_builddir)/src/lib/cryptolink/libkea-cryptolink.la
+run_unittests_LDADD += $(top_builddir)/src/lib/util/unittests/libutil_unittests.la
+run_unittests_LDADD += $(top_builddir)/src/lib/util/libkea-util.la
+run_unittests_LDADD += $(top_builddir)/src/lib/exceptions/libkea-exceptions.la
+run_unittests_LDADD += $(CRYPTO_LIBS) $(GTEST_LDADD)
+endif
+
+noinst_PROGRAMS = $(TESTS)
diff --git a/src/lib/dns/tests/Makefile.in b/src/lib/dns/tests/Makefile.in
new file mode 100644
index 0000000..59bb00f
--- /dev/null
+++ b/src/lib/dns/tests/Makefile.in
@@ -0,0 +1,2357 @@
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+	-rm -f ./$(DEPDIR)/run_unittests-master_lexer_inputsource_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-master_lexer_state_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-master_lexer_token_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-master_lexer_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-master_loader_callbacks_test.Po
+	-rm -f ./$(DEPDIR)/run_unittests-master_loader_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-masterload_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-message_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-messagerenderer_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-name_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-nsec3hash_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-opcode_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-qid_gen_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-question_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rcode_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_afsdb_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_caa_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_char_string_data_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_char_string_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_cname_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_dhcid_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_dname_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_dnskey_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_ds_like_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_hinfo_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_in_a_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_in_aaaa_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_minfo_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_mx_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_naptr_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_ns_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_nsec3_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_nsec3param_like_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_nsec3param_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_nsec_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_nsecbitmap_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_opt_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_pimpl_holder_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_ptr_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_rp_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_rrsig_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_soa_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_srv_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_sshfp_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_tkey_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_tlsa_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_tsig_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_txt_like_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdatafields_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rrclass_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rrcollator_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rrparamregistry_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rrset_collection_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rrset_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rrttl_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rrtype_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-run_unittests.Po
+	-rm -f ./$(DEPDIR)/run_unittests-serial_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-tsig_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-tsigerror_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-tsigkey_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-tsigrecord_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-unittest_util.Po
+	-rm -f ./$(DEPDIR)/run_unittests-zone_checker_unittest.Po
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-recursive
+
+dvi-am:
+
+html: html-recursive
+
+html-am:
+
+info: info-recursive
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-recursive
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-recursive
+
+install-html-am:
+
+install-info: install-info-recursive
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-recursive
+
+install-pdf-am:
+
+install-ps: install-ps-recursive
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+		-rm -f ./$(DEPDIR)/run_unittests-dns_exceptions_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-edns_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-labelsequence_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-master_lexer_inputsource_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-master_lexer_state_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-master_lexer_token_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-master_lexer_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-master_loader_callbacks_test.Po
+	-rm -f ./$(DEPDIR)/run_unittests-master_loader_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-masterload_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-message_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-messagerenderer_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-name_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-nsec3hash_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-opcode_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-qid_gen_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-question_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rcode_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_afsdb_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_caa_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_char_string_data_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_char_string_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_cname_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_dhcid_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_dname_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_dnskey_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_ds_like_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_hinfo_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_in_a_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_in_aaaa_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_minfo_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_mx_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_naptr_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_ns_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_nsec3_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_nsec3param_like_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_nsec3param_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_nsec_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_nsecbitmap_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_opt_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_pimpl_holder_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_ptr_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_rp_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_rrsig_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_soa_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_srv_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_sshfp_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_tkey_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_tlsa_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_tsig_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_txt_like_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdata_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rdatafields_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rrclass_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rrcollator_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rrparamregistry_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rrset_collection_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rrset_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rrttl_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-rrtype_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-run_unittests.Po
+	-rm -f ./$(DEPDIR)/run_unittests-serial_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-tsig_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-tsigerror_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-tsigkey_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-tsigrecord_unittest.Po
+	-rm -f ./$(DEPDIR)/run_unittests-unittest_util.Po
+	-rm -f ./$(DEPDIR)/run_unittests-zone_checker_unittest.Po
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: $(am__recursive_targets) check-am install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am \
+	am--depfiles check check-TESTS check-am clean clean-generic \
+	clean-libtool clean-noinstPROGRAMS cscopelist-am ctags \
+	ctags-am distclean distclean-compile distclean-generic \
+	distclean-libtool distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	tags tags-am uninstall uninstall-am
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/lib/dns/tests/dns_exceptions_unittest.cc b/src/lib/dns/tests/dns_exceptions_unittest.cc
new file mode 100644
index 0000000..a8d2590
--- /dev/null
+++ b/src/lib/dns/tests/dns_exceptions_unittest.cc
@@ -0,0 +1,65 @@
+// Copyright (C) 2014-2015,2017 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <dns/exceptions.h>
+
+#include <gtest/gtest.h>
+
+namespace { // begin unnamed namespace
+
+TEST(DNSExceptionsTest, checkExceptionsHierarchy) {
+    EXPECT_NO_THROW({
+        const isc::dns::Exception exception("", 0, "");
+        const isc::Exception& exception_cast =
+          dynamic_cast<const isc::Exception&>(exception);
+        // to avoid compiler warning
+        exception_cast.what();
+    });
+
+    EXPECT_NO_THROW({
+        const isc::dns::DNSTextError exception("", 0, "");
+        const isc::dns::Exception& exception_cast =
+          dynamic_cast<const isc::dns::Exception&>(exception);
+        // to avoid compiler warning
+        exception_cast.what();
+    });
+
+    EXPECT_NO_THROW({
+        const isc::dns::NameParserException exception("", 0, "");
+        const isc::dns::DNSTextError& exception_cast =
+          dynamic_cast<const isc::dns::DNSTextError&>(exception);
+        // to avoid compiler warning
+        exception_cast.what();
+    });
+
+    EXPECT_NO_THROW({
+        const isc::dns::DNSMessageFORMERR exception("", 0, "");
+        const isc::dns::DNSProtocolError& exception_cast =
+          dynamic_cast<const isc::dns::DNSProtocolError&>(exception);
+        const isc::dns::Exception& exception_cast2 =
+          dynamic_cast<const isc::dns::Exception&>(exception);
+        // to avoid compiler warning
+        exception_cast.getRcode();
+        exception_cast.what();
+        exception_cast2.what();
+    });
+
+    EXPECT_NO_THROW({
+        const isc::dns::DNSMessageBADVERS exception("", 0, "");
+        const isc::dns::DNSProtocolError& exception_cast =
+          dynamic_cast<const isc::dns::DNSProtocolError&>(exception);
+        const isc::dns::Exception& exception_cast2 =
+          dynamic_cast<const isc::dns::Exception&>(exception);
+        // to avoid compiler warning
+        exception_cast.getRcode();
+        exception_cast.what();
+        exception_cast2.what();
+    });
+}
+
+} // end unnamed namespace
diff --git a/src/lib/dns/tests/edns_unittest.cc b/src/lib/dns/tests/edns_unittest.cc
new file mode 100644
index 0000000..dfc68cc
--- /dev/null
+++ b/src/lib/dns/tests/edns_unittest.cc
@@ -0,0 +1,258 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <sstream>
+
+#include <exceptions/exceptions.h>
+
+#include <util/buffer.h>
+#include <dns/edns.h>
+#include <dns/exceptions.h>
+#include <dns/message.h>
+#include <dns/messagerenderer.h>
+#include <dns/name.h>
+#include <dns/rcode.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrttl.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+const uint8_t EDNS::SUPPORTED_VERSION;
+
+namespace {
+class EDNSTest : public ::testing::Test {
+protected:
+    EDNSTest() : rrtype(RRType::OPT()), buffer(NULL, 0), obuffer(0), rcode(0) {
+        opt_rdata = ConstRdataPtr(new generic::OPT());
+        edns_base.setUDPSize(4096);
+    }
+    RRType rrtype;
+    EDNS edns_base;
+    ConstEDNSPtr edns;
+    InputBuffer buffer;
+    OutputBuffer obuffer;
+    MessageRenderer renderer;
+    ConstRdataPtr opt_rdata;
+    Rcode rcode;
+    vector<unsigned char> wiredata;
+};
+
+// RRClass of EDNS OPT means UDP buffer size
+const RRClass rrclass(4096);
+// RRTTL of EDNS OPT encodes extended-rcode, version, and DO bit
+const RRTTL rrttl_do_on(0x00008000); // DO=on
+const RRTTL rrttl_do_off(0);         // DO=off
+const RRTTL rrttl_badver(0x00018000); // version=1, DO=on
+
+TEST_F(EDNSTest, badVerConstruct) {
+    EXPECT_THROW(EDNS(1), isc::InvalidParameter);
+}
+
+TEST_F(EDNSTest, DNSSECDOBit) {
+    // tests for EDNS from RR
+
+    // DO bit is on, so DNSSEC should be considered to be supported.
+    EXPECT_TRUE(EDNS(Name::ROOT_NAME(), rrclass, rrtype,
+                     rrttl_do_on, *opt_rdata).getDNSSECAwareness());
+
+    // DO bit is off.  DNSSEC should be considered to be unsupported.
+    EXPECT_FALSE(EDNS(Name::ROOT_NAME(), rrclass, rrtype,
+                      rrttl_do_off, *opt_rdata).getDNSSECAwareness());
+
+    // tests for EDNS constructed by hand
+    EXPECT_FALSE(edns_base.getDNSSECAwareness()); // false by default
+    edns_base.setDNSSECAwareness(true);          // enable by hand
+    EXPECT_TRUE(edns_base.getDNSSECAwareness());
+    edns_base.setDNSSECAwareness(false); // disable by hand
+    EXPECT_FALSE(edns_base.getDNSSECAwareness());
+}
+
+TEST_F(EDNSTest, UDPSize) {
+    EXPECT_EQ(4096, EDNS(Name::ROOT_NAME(), rrclass, rrtype, rrttl_do_on,
+                         *opt_rdata).getUDPSize());
+
+    // EDNS UDP size smaller than the traditional max, 512.  Unusual, but
+    // not prohibited.
+    edns_base.setUDPSize(511);
+    EXPECT_EQ(511, edns_base.getUDPSize());
+
+    // Even 0 is okay.
+    edns_base.setUDPSize(0);
+    EXPECT_EQ(0, edns_base.getUDPSize());
+
+    // Possible max value is also okay, although the higher layer app may
+    // adjust it to a reasonably lower value
+    edns_base.setUDPSize(65535);
+    EXPECT_EQ(65535, edns_base.getUDPSize());
+}
+
+TEST_F(EDNSTest, getVersion) {
+    // Constructed by hand
+    EXPECT_EQ(EDNS::SUPPORTED_VERSION, EDNS().getVersion());
+
+    // From RR
+    EXPECT_EQ(EDNS::SUPPORTED_VERSION,
+              EDNS(Name::ROOT_NAME(), rrclass, rrtype, rrttl_do_on,
+                   *opt_rdata).getVersion());
+}
+
+TEST_F(EDNSTest, BadWireData) {
+    // Incompatible RR type
+    EXPECT_THROW(EDNS(Name::ROOT_NAME(), rrclass, RRType::A(),
+                      rrttl_do_on, *opt_rdata), isc::InvalidParameter);
+
+    // OPT RR of a non root name
+    EXPECT_THROW(EDNS(Name("example.com"), rrclass, rrtype,
+                      rrttl_do_on, *opt_rdata), DNSMessageFORMERR);
+                 
+    // Unsupported Version
+    EXPECT_THROW(EDNS(Name::ROOT_NAME(), rrclass, rrtype,
+                      rrttl_badver, *opt_rdata), DNSMessageBADVERS);
+}
+
+TEST_F(EDNSTest, toText) {
+    // Typical case, disabling DNSSEC
+    EXPECT_EQ("; EDNS: version: 0, flags:; udp: 4096\n",
+              EDNS(Name::ROOT_NAME(), rrclass, rrtype, rrttl_do_off,
+                   *opt_rdata).toText());
+
+    // Typical case, enabling DNSSEC
+    EXPECT_EQ("; EDNS: version: 0, flags: do; udp: 4096\n",
+              EDNS(Name::ROOT_NAME(), rrclass, rrtype, rrttl_do_on,
+                   *opt_rdata).toText());
+
+    // Non-0 extended Rcode: ignored in the toText() output.
+    EXPECT_EQ("; EDNS: version: 0, flags: do; udp: 4096\n",
+              EDNS(Name::ROOT_NAME(), rrclass, rrtype,
+                   RRTTL(0x01008000), *opt_rdata).toText());
+
+    // Unknown flag: ignored in the toText() output.
+    EXPECT_EQ("; EDNS: version: 0, flags: do; udp: 4096\n",
+              EDNS(Name::ROOT_NAME(), rrclass, rrtype,
+                   RRTTL(0x00008001), *opt_rdata).toText());
+}
+
+TEST_F(EDNSTest, toWireRenderer) {
+    // Typical case, (explicitly) disabling DNSSEC
+    edns_base.setDNSSECAwareness(false);
+    EXPECT_EQ(1, edns_base.toWire(renderer,
+                                  Rcode::NOERROR().getExtendedCode()));
+    UnitTestUtil::readWireData("edns_toWire1.wire", wiredata);
+    matchWireData(&wiredata[0], wiredata.size(),
+                  renderer.getData(), renderer.getLength());
+
+    // Typical case, enabling DNSSEC
+    renderer.clear();
+    wiredata.clear();
+    edns_base.setDNSSECAwareness(true);
+    EXPECT_EQ(1, edns_base.toWire(renderer,
+                                  Rcode::NOERROR().getExtendedCode()));
+    UnitTestUtil::readWireData("edns_toWire2.wire", wiredata);
+    matchWireData(&wiredata[0], wiredata.size(),
+                  renderer.getData(), renderer.getLength());
+
+    // Non-0 extended Rcode
+    renderer.clear();
+    wiredata.clear();
+    edns_base.setDNSSECAwareness(true);
+    EXPECT_EQ(1, edns_base.toWire(renderer,
+                                  Rcode::BADVERS().getExtendedCode()));
+    UnitTestUtil::readWireData("edns_toWire3.wire", wiredata);
+    matchWireData(&wiredata[0], wiredata.size(),
+                  renderer.getData(), renderer.getLength());
+
+    // Uncommon UDP buffer size
+    renderer.clear();
+    wiredata.clear();
+    edns_base.setDNSSECAwareness(true);
+    edns_base.setUDPSize(511);
+    EXPECT_EQ(1, edns_base.toWire(renderer,
+                                  Rcode::NOERROR().getExtendedCode()));
+    UnitTestUtil::readWireData("edns_toWire4.wire", wiredata);
+    matchWireData(&wiredata[0], wiredata.size(),
+                  renderer.getData(), renderer.getLength());
+
+    // From RR with unknown flag.  If used for toWire(), the unknown flag
+    // should disappear.
+    renderer.clear();
+    wiredata.clear();
+    EXPECT_EQ(1, EDNS(Name::ROOT_NAME(), rrclass, rrtype, RRTTL(0x00008001),
+                      *opt_rdata).toWire(renderer,
+                                         Rcode::NOERROR().getExtendedCode()));
+    UnitTestUtil::readWireData("edns_toWire2.wire", wiredata);
+    matchWireData(&wiredata[0], wiredata.size(),
+                  renderer.getData(), renderer.getLength());
+
+    // If the available length in the renderer is not sufficient for the OPT
+    // RR, it shouldn't be inserted.
+    renderer.clear();
+    renderer.setLengthLimit(10); // 10 = minimum length of OPT RR - 1
+    edns_base.setDNSSECAwareness(true);
+    edns_base.setUDPSize(4096);
+    EXPECT_EQ(0, edns_base.toWire(renderer,
+                                  Rcode::NOERROR().getExtendedCode()));
+    // renderer should be intact
+    EXPECT_EQ(0, renderer.getLength());
+}
+
+TEST_F(EDNSTest, toWireBuffer) {
+    // "to renderer" and "to buffer" should generally produce the same result.
+    // for simplicity we only check one typical case to confirm that.
+    EXPECT_EQ(1, edns_base.toWire(obuffer,
+                                  Rcode::NOERROR().getExtendedCode()));
+    UnitTestUtil::readWireData("edns_toWire1.wire", wiredata);
+    matchWireData(&wiredata[0], wiredata.size(),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(EDNSTest, createFromRR) {
+    uint8_t extended_rcode;
+
+    // normal case
+    edns = ConstEDNSPtr(createEDNSFromRR(Name::ROOT_NAME(), rrclass, rrtype,
+                                         rrttl_do_on, *opt_rdata,
+                                         extended_rcode));
+    EXPECT_EQ(EDNS::SUPPORTED_VERSION, edns->getVersion());
+    EXPECT_TRUE(edns->getDNSSECAwareness());
+    EXPECT_EQ(4096, edns->getUDPSize());
+    EXPECT_EQ(0, static_cast<int>(extended_rcode));
+
+    // non-0 extended rcode
+    extended_rcode = 0;
+    ConstEDNSPtr(createEDNSFromRR(Name::ROOT_NAME(), rrclass, rrtype,
+                                  RRTTL(0x01008000), *opt_rdata,
+                                  extended_rcode));
+    EXPECT_EQ(1, static_cast<int>(extended_rcode));
+
+    // creation triggers an exception.  extended_rcode must be intact.
+    extended_rcode = 0;
+    EXPECT_THROW(createEDNSFromRR(Name::ROOT_NAME(), rrclass, rrtype,
+                                  rrttl_badver, *opt_rdata, extended_rcode),
+                 DNSMessageBADVERS);
+    EXPECT_EQ(0, static_cast<int>(extended_rcode));
+}
+
+// test operator<<.  We simply confirm it appends the result of toText().
+TEST_F(EDNSTest, LeftShiftOperator) {
+    ostringstream oss;
+    oss << edns_base;
+    EXPECT_EQ(edns_base.toText(), oss.str());
+}
+}
diff --git a/src/lib/dns/tests/labelsequence_unittest.cc b/src/lib/dns/tests/labelsequence_unittest.cc
new file mode 100644
index 0000000..15650fa
--- /dev/null
+++ b/src/lib/dns/tests/labelsequence_unittest.cc
@@ -0,0 +1,1243 @@
+// Copyright (C) 2012-2020 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/buffer.h>
+
+#include <dns/labelsequence.h>
+#include <dns/name.h>
+#include <exceptions/exceptions.h>
+
+#include <gtest/gtest.h>
+
+#include <boost/functional/hash.hpp>
+
+#include <string>
+#include <vector>
+#include <utility>
+#include <set>
+
+using namespace isc::dns;
+using namespace std;
+
+// XXX: this is defined as class static constants, but some compilers
+// seemingly cannot find the symbols when used in the EXPECT_xxx macros.
+const size_t LabelSequence::MAX_SERIALIZED_LENGTH;
+
+namespace {
+
+// Common check that two labelsequences are equal
+void check_equal(const LabelSequence& ls1, const LabelSequence& ls2) {
+    NameComparisonResult result = ls1.compare(ls2);
+    EXPECT_EQ(isc::dns::NameComparisonResult::EQUAL,
+              result.getRelation()) << ls1.toText() << " != " << ls2.toText();
+    EXPECT_EQ(0, result.getOrder()) << ls1.toText() << " != " << ls2.toText();
+    EXPECT_EQ(ls1.getLabelCount(), result.getCommonLabels());
+}
+
+// Common check for general comparison of two labelsequences
+void check_compare(const LabelSequence& ls1, const LabelSequence& ls2,
+                   isc::dns::NameComparisonResult::NameRelation relation,
+                   size_t common_labels, bool check_order, int order=0) {
+    NameComparisonResult result = ls1.compare(ls2);
+    EXPECT_EQ(relation, result.getRelation());
+    EXPECT_EQ(common_labels, result.getCommonLabels());
+    if (check_order) {
+        EXPECT_EQ(order, result.getOrder());
+    }
+}
+
+class LabelSequenceTest : public ::testing::Test {
+public:
+    LabelSequenceTest() : n1("example.org"), n2("example.com"),
+                          n3("example.org"), n4("foo.bar.test.example"),
+                          n5("example.ORG"), n6("ExAmPlE.org"),
+                          n7("."), n8("foo.example.org.bar"),
+                          n9("\\000xample.org"),
+                          n10("\\000xample.org"),
+                          n11("\\000xample.com"),
+                          n12("\\000xamplE.com"),
+                          n_maxlabel("0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+                                     "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+                                     "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+                                     "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+                                     "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+                                     "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+                                     "0.1.2.3.4.5.6"),
+                          ls1(n1), ls2(n2), ls3(n3), ls4(n4), ls5(n5),
+                          ls6(n6), ls7(n7), ls8(n8),
+                          ls9(n9), ls10(n10), ls11(n11), ls12(n12)
+    {};
+    // Need to keep names in scope for at least the lifetime of
+    // the labelsequences
+    Name n1, n2, n3, n4, n5, n6, n7, n8;
+    Name n9, n10, n11, n12;
+    const Name n_maxlabel;
+
+    LabelSequence ls1, ls2, ls3, ls4, ls5, ls6, ls7, ls8;
+    LabelSequence ls9, ls10, ls11, ls12;
+};
+
+// Check the assignment operator.
+TEST_F(LabelSequenceTest, assign) {
+    // Create the label sequence with example.org (n1 name).
+    LabelSequence ls(n1);
+    EXPECT_TRUE(ls == ls1);
+
+    // Assign the label sequence to example.com (n2 name).
+    ls = ls2;
+    EXPECT_FALSE(ls == ls1);
+    EXPECT_TRUE(ls == ls2);
+}
+
+// Basic equality tests
+TEST_F(LabelSequenceTest, equals_sensitive) {
+    EXPECT_TRUE(ls1.equals(ls1, true));
+    EXPECT_FALSE(ls1.equals(ls2, true));
+    EXPECT_TRUE(ls1.equals(ls3, true));
+    EXPECT_FALSE(ls1.equals(ls4, true));
+    EXPECT_FALSE(ls1.equals(ls5, true));
+    EXPECT_FALSE(ls1.equals(ls6, true));
+    EXPECT_FALSE(ls1.equals(ls7, true));
+    EXPECT_FALSE(ls1.equals(ls8, true));
+
+    EXPECT_FALSE(ls2.equals(ls1, true));
+    EXPECT_TRUE(ls2.equals(ls2, true));
+    EXPECT_FALSE(ls2.equals(ls3, true));
+    EXPECT_FALSE(ls2.equals(ls4, true));
+    EXPECT_FALSE(ls2.equals(ls5, true));
+    EXPECT_FALSE(ls2.equals(ls6, true));
+    EXPECT_FALSE(ls2.equals(ls7, true));
+    EXPECT_FALSE(ls2.equals(ls8, true));
+
+    EXPECT_FALSE(ls4.equals(ls1, true));
+    EXPECT_FALSE(ls4.equals(ls2, true));
+    EXPECT_FALSE(ls4.equals(ls3, true));
+    EXPECT_TRUE(ls4.equals(ls4, true));
+    EXPECT_FALSE(ls4.equals(ls5, true));
+    EXPECT_FALSE(ls4.equals(ls6, true));
+    EXPECT_FALSE(ls4.equals(ls7, true));
+    EXPECT_FALSE(ls4.equals(ls8, true));
+
+    EXPECT_FALSE(ls5.equals(ls1, true));
+    EXPECT_FALSE(ls5.equals(ls2, true));
+    EXPECT_FALSE(ls5.equals(ls3, true));
+    EXPECT_FALSE(ls5.equals(ls4, true));
+    EXPECT_TRUE(ls5.equals(ls5, true));
+    EXPECT_FALSE(ls5.equals(ls6, true));
+    EXPECT_FALSE(ls5.equals(ls7, true));
+    EXPECT_FALSE(ls5.equals(ls8, true));
+
+    EXPECT_TRUE(ls9.equals(ls10, true));
+    EXPECT_FALSE(ls9.equals(ls11, true));
+    EXPECT_FALSE(ls9.equals(ls12, true));
+    EXPECT_FALSE(ls11.equals(ls12, true));
+}
+
+TEST_F(LabelSequenceTest, equals_insensitive) {
+    EXPECT_TRUE(ls1.equals(ls1));
+    EXPECT_FALSE(ls1.equals(ls2));
+    EXPECT_TRUE(ls1.equals(ls3));
+    EXPECT_FALSE(ls1.equals(ls4));
+    EXPECT_TRUE(ls1.equals(ls5));
+    EXPECT_TRUE(ls1.equals(ls6));
+    EXPECT_FALSE(ls1.equals(ls7));
+
+    EXPECT_FALSE(ls2.equals(ls1));
+    EXPECT_TRUE(ls2.equals(ls2));
+    EXPECT_FALSE(ls2.equals(ls3));
+    EXPECT_FALSE(ls2.equals(ls4));
+    EXPECT_FALSE(ls2.equals(ls5));
+    EXPECT_FALSE(ls2.equals(ls6));
+    EXPECT_FALSE(ls2.equals(ls7));
+
+    EXPECT_TRUE(ls3.equals(ls1));
+    EXPECT_FALSE(ls3.equals(ls2));
+    EXPECT_TRUE(ls3.equals(ls3));
+    EXPECT_FALSE(ls3.equals(ls4));
+    EXPECT_TRUE(ls3.equals(ls5));
+    EXPECT_TRUE(ls3.equals(ls6));
+    EXPECT_FALSE(ls3.equals(ls7));
+
+    EXPECT_FALSE(ls4.equals(ls1));
+    EXPECT_FALSE(ls4.equals(ls2));
+    EXPECT_FALSE(ls4.equals(ls3));
+    EXPECT_TRUE(ls4.equals(ls4));
+    EXPECT_FALSE(ls4.equals(ls5));
+    EXPECT_FALSE(ls4.equals(ls6));
+    EXPECT_FALSE(ls4.equals(ls7));
+
+    EXPECT_TRUE(ls5.equals(ls1));
+    EXPECT_FALSE(ls5.equals(ls2));
+    EXPECT_TRUE(ls5.equals(ls3));
+    EXPECT_FALSE(ls5.equals(ls4));
+    EXPECT_TRUE(ls5.equals(ls5));
+    EXPECT_TRUE(ls5.equals(ls6));
+    EXPECT_FALSE(ls5.equals(ls7));
+
+    EXPECT_TRUE(ls9.equals(ls10));
+    EXPECT_FALSE(ls9.equals(ls11));
+    EXPECT_FALSE(ls9.equals(ls12));
+    EXPECT_TRUE(ls11.equals(ls12));
+}
+
+// operator==().  This is mostly trivial wrapper, so it should suffice to
+// check some basic cases.
+TEST_F(LabelSequenceTest, operatorEqual) {
+    // cppcheck-suppress duplicateExpression
+    EXPECT_TRUE(ls1 == ls1);      // self equivalence
+    EXPECT_TRUE(ls1 == LabelSequence(n1)); // equivalent two different objects
+    EXPECT_FALSE(ls1 == ls2);      // non equivalent objects
+    EXPECT_TRUE(ls1 == ls5);       // it's always case insensitive
+}
+
+// Compare tests
+TEST_F(LabelSequenceTest, compare) {
+    // "example.org." and "example.org.", case sensitive
+    NameComparisonResult result = ls1.compare(ls3, true);
+    EXPECT_EQ(isc::dns::NameComparisonResult::EQUAL,
+              result.getRelation());
+    EXPECT_EQ(0, result.getOrder());
+    EXPECT_EQ(3, result.getCommonLabels());
+
+    // "example.org." and "example.ORG.", case sensitive
+    result = ls3.compare(ls5, true);
+    EXPECT_EQ(isc::dns::NameComparisonResult::COMMONANCESTOR,
+              result.getRelation());
+    EXPECT_LT(0, result.getOrder());
+    EXPECT_EQ(1, result.getCommonLabels());
+
+    // "example.org." and "example.ORG.", case in-sensitive
+    result = ls3.compare(ls5);
+    EXPECT_EQ(isc::dns::NameComparisonResult::EQUAL,
+              result.getRelation());
+    EXPECT_EQ(0, result.getOrder());
+    EXPECT_EQ(3, result.getCommonLabels());
+
+    Name na("a.example.org");
+    Name nb("b.example.org");
+    LabelSequence lsa(na);
+    LabelSequence lsb(nb);
+
+    // "a.example.org." and "b.example.org.", case in-sensitive
+    result = lsa.compare(lsb);
+    EXPECT_EQ(isc::dns::NameComparisonResult::COMMONANCESTOR,
+              result.getRelation());
+    EXPECT_GT(0, result.getOrder());
+    EXPECT_EQ(3, result.getCommonLabels());
+
+    // "example.org." and "b.example.org.", case in-sensitive
+    lsa.stripLeft(1);
+    result = lsa.compare(lsb);
+    EXPECT_EQ(isc::dns::NameComparisonResult::SUPERDOMAIN,
+              result.getRelation());
+    EXPECT_GT(0, result.getOrder());
+    EXPECT_EQ(3, result.getCommonLabels());
+
+    Name nc("g.f.e.d.c.example.org");
+    LabelSequence lsc(nc);
+
+    // "g.f.e.d.c.example.org." and "b.example.org" (not absolute), case
+    // in-sensitive; the absolute one is always smaller.
+    lsb.stripRight(1);
+    result = lsc.compare(lsb);
+    EXPECT_EQ(isc::dns::NameComparisonResult::NONE, result.getRelation());
+    EXPECT_GT(0, result.getOrder());
+    EXPECT_EQ(0, result.getCommonLabels());
+
+    // "g.f.e.d.c.example.org." and "example.org.", case in-sensitive
+    result = lsc.compare(ls1);
+    EXPECT_EQ(isc::dns::NameComparisonResult::SUBDOMAIN,
+              result.getRelation());
+    EXPECT_LT(0, result.getOrder());
+    EXPECT_EQ(3, result.getCommonLabels());
+
+    // "e.d.c.example.org." and "example.org.", case in-sensitive
+    lsc.stripLeft(2);
+    result = lsc.compare(ls1);
+    EXPECT_EQ(isc::dns::NameComparisonResult::SUBDOMAIN,
+              result.getRelation());
+    EXPECT_LT(0, result.getOrder());
+    EXPECT_EQ(3, result.getCommonLabels());
+
+    // "example.org." and "example.org.", case in-sensitive
+    lsc.stripLeft(3);
+    result = lsc.compare(ls1);
+    EXPECT_EQ(isc::dns::NameComparisonResult::EQUAL,
+              result.getRelation());
+    EXPECT_EQ(0, result.getOrder());
+    EXPECT_EQ(3, result.getCommonLabels());
+
+    // "." and "example.org.", case in-sensitive
+    lsc.stripLeft(2);
+    result = lsc.compare(ls1);
+    EXPECT_EQ(isc::dns::NameComparisonResult::SUPERDOMAIN,
+              result.getRelation());
+    EXPECT_GT(0, result.getOrder());
+    EXPECT_EQ(1, result.getCommonLabels());
+
+    Name nd("a.b.c.isc.example.org");
+    LabelSequence lsd(nd);
+    Name ne("w.x.y.isc.EXAMPLE.org");
+    LabelSequence lse(ne);
+
+    // "a.b.c.isc.example.org." and "w.x.y.isc.EXAMPLE.org.",
+    // case sensitive
+    result = lsd.compare(lse, true);
+    EXPECT_EQ(isc::dns::NameComparisonResult::COMMONANCESTOR,
+              result.getRelation());
+    EXPECT_LT(0, result.getOrder());
+    EXPECT_EQ(2, result.getCommonLabels());
+
+    // "a.b.c.isc.example.org." and "w.x.y.isc.EXAMPLE.org.",
+    // case in-sensitive
+    result = lsd.compare(lse);
+    EXPECT_EQ(isc::dns::NameComparisonResult::COMMONANCESTOR,
+              result.getRelation());
+    EXPECT_GT(0, result.getOrder());
+    EXPECT_EQ(4, result.getCommonLabels());
+
+    // "isc.example.org." and "isc.EXAMPLE.org.", case sensitive
+    lsd.stripLeft(3);
+    lse.stripLeft(3);
+    result = lsd.compare(lse, true);
+    EXPECT_EQ(isc::dns::NameComparisonResult::COMMONANCESTOR,
+              result.getRelation());
+    EXPECT_LT(0, result.getOrder());
+    EXPECT_EQ(2, result.getCommonLabels());
+
+    // "isc.example.org." and "isc.EXAMPLE.org.", case in-sensitive
+    result = lsd.compare(lse);
+    EXPECT_EQ(isc::dns::NameComparisonResult::EQUAL,
+              result.getRelation());
+    EXPECT_EQ(0, result.getOrder());
+    EXPECT_EQ(4, result.getCommonLabels());
+
+    Name nf("a.b.c.isc.example.org");
+    LabelSequence lsf(nf);
+    Name ng("w.x.y.isc.EXAMPLE.org");
+    LabelSequence lsg(ng);
+
+    // lsf: "a.b.c.isc.example.org."
+    // lsg: "w.x.y.isc.EXAMPLE.org" (not absolute), case in-sensitive.
+    // the absolute one is always smaller.
+    lsg.stripRight(1);
+    result = lsg.compare(lsf);  // lsg > lsf
+    EXPECT_EQ(isc::dns::NameComparisonResult::NONE, result.getRelation());
+    EXPECT_LT(0, result.getOrder());
+    EXPECT_EQ(0, result.getCommonLabels());
+
+    // "a.b.c.isc.example.org" (not absolute) and
+    // "w.x.y.isc.EXAMPLE.org" (not absolute), case in-sensitive
+    lsf.stripRight(1);
+    result = lsg.compare(lsf);
+    EXPECT_EQ(isc::dns::NameComparisonResult::COMMONANCESTOR,
+              result.getRelation());
+    EXPECT_LT(0, result.getOrder());
+    EXPECT_EQ(3, result.getCommonLabels());
+
+    // "a.b.c.isc.example" (not absolute) and
+    // "w.x.y.isc.EXAMPLE" (not absolute), case in-sensitive
+    lsf.stripRight(1);
+    lsg.stripRight(1);
+    result = lsg.compare(lsf);
+    EXPECT_EQ(isc::dns::NameComparisonResult::COMMONANCESTOR,
+              result.getRelation());
+    EXPECT_LT(0, result.getOrder());
+    EXPECT_EQ(2, result.getCommonLabels());
+
+    // lsf: "a.b.c" (not absolute) and
+    // lsg: "w.x.y" (not absolute), case in-sensitive; a.b.c < w.x.y;
+    // no common labels.
+    lsf.stripRight(2);
+    lsg.stripRight(2);
+    result = lsf.compare(lsg);
+    EXPECT_EQ(isc::dns::NameComparisonResult::NONE, result.getRelation());
+    EXPECT_GT(0, result.getOrder());
+    EXPECT_EQ(0, result.getCommonLabels());
+
+    // lsf2: a.b.cc (not absolute); a.b.c < a.b.cc, no common labels.
+    const Name nf2("a.b.cc");
+    LabelSequence lsf2(nf2);
+    lsf2.stripRight(1);
+    result = lsf.compare(lsf2);
+    EXPECT_EQ(isc::dns::NameComparisonResult::NONE, result.getRelation());
+    EXPECT_GT(0, result.getOrder());
+    EXPECT_EQ(0, result.getCommonLabels());
+
+    Name nh("aexample.org");
+    LabelSequence lsh(nh);
+    Name ni("bexample.org");
+    LabelSequence lsi(ni);
+
+    // "aexample.org" (not absolute) and
+    // "bexample.org" (not absolute), case in-sensitive
+    lsh.stripRight(1);
+    lsi.stripRight(1);
+    result = lsh.compare(lsi);
+    EXPECT_EQ(isc::dns::NameComparisonResult::COMMONANCESTOR,
+              result.getRelation());
+    EXPECT_GT(0, result.getOrder());
+    EXPECT_EQ(1, result.getCommonLabels());
+
+    // "aexample" (not absolute) and
+    // "bexample" (not absolute), case in-sensitive;
+    // aexample < bexample; no common labels.
+    lsh.stripRight(1);
+    lsi.stripRight(1);
+    result = lsh.compare(lsi);
+    EXPECT_EQ(isc::dns::NameComparisonResult::NONE, result.getRelation());
+    EXPECT_GT(0, result.getOrder());
+    EXPECT_EQ(0, result.getCommonLabels());
+
+    Name nj("example.org");
+    LabelSequence lsj(nj);
+    Name nk("example.org");
+    LabelSequence lsk(nk);
+
+    // "example.org" (not absolute) and
+    // "example.org" (not absolute), case in-sensitive
+    lsj.stripRight(1);
+    lsk.stripRight(1);
+    result = lsj.compare(lsk);
+    EXPECT_EQ(isc::dns::NameComparisonResult::EQUAL,
+              result.getRelation());
+    EXPECT_EQ(0, result.getOrder());
+    EXPECT_EQ(2, result.getCommonLabels());
+
+    // "example" (not absolute) and
+    // "example" (not absolute), case in-sensitive
+    lsj.stripRight(1);
+    lsk.stripRight(1);
+    result = lsj.compare(lsk);
+    EXPECT_EQ(isc::dns::NameComparisonResult::EQUAL,
+              result.getRelation());
+    EXPECT_EQ(0, result.getOrder());
+    EXPECT_EQ(1, result.getCommonLabels());
+}
+
+void
+getDataCheck(const uint8_t* expected_data, size_t expected_len,
+             const LabelSequence& ls)
+{
+    size_t len;
+    const uint8_t* data = ls.getData(&len);
+    ASSERT_EQ(expected_len, len) << "Expected data: " << expected_data <<
+                                    ", label sequence: " << ls;
+    EXPECT_EQ(expected_len, ls.getDataLength()) <<
+        "Expected data: " << expected_data <<
+        ", label sequence: " << ls;
+    for (size_t i = 0; i < len; ++i) {
+        EXPECT_EQ(expected_data[i], data[i]) <<
+          "Difference at pos " << i << ": Expected data: " << expected_data <<
+          ", label sequence: " << ls;
+    }
+}
+
+// Convenient data converter for expected data.  Label data must be of
+// uint8_t*, while it's convenient if we can specify some test data in
+// plain string (which is of char*).  This wrapper converts the latter to
+// the former in a safer way.
+void
+getDataCheck(const char* expected_char_data, size_t expected_len,
+             const LabelSequence& ls)
+{
+    const vector<uint8_t> expected_data(expected_char_data,
+                                        expected_char_data + expected_len);
+    getDataCheck(&expected_data[0], expected_len, ls);
+}
+
+TEST_F(LabelSequenceTest, getData) {
+    getDataCheck("\007example\003org\000", 13, ls1);
+    getDataCheck("\007example\003com\000", 13, ls2);
+    getDataCheck("\007example\003org\000", 13, ls3);
+    getDataCheck("\003foo\003bar\004test\007example\000", 22, ls4);
+    getDataCheck("\007example\003ORG\000", 13, ls5);
+    getDataCheck("\007ExAmPlE\003org\000", 13, ls6);
+    getDataCheck("\000", 1, ls7);
+};
+
+TEST_F(LabelSequenceTest, stripLeft) {
+    EXPECT_TRUE(ls1.equals(ls3));
+    ls1.stripLeft(0);
+    getDataCheck("\007example\003org\000", 13, ls1);
+    EXPECT_TRUE(ls1.equals(ls3));
+    ls1.stripLeft(1);
+    getDataCheck("\003org\000", 5, ls1);
+    EXPECT_FALSE(ls1.equals(ls3));
+    ls1.stripLeft(1);
+    getDataCheck("\000", 1, ls1);
+    EXPECT_TRUE(ls1.equals(ls7));
+
+    ls2.stripLeft(2);
+    getDataCheck("\000", 1, ls2);
+    EXPECT_TRUE(ls2.equals(ls7));
+}
+
+TEST_F(LabelSequenceTest, stripRight) {
+    EXPECT_TRUE(ls1.equals(ls3));
+    ls1.stripRight(1);
+    getDataCheck("\007example\003org", 12, ls1);
+    EXPECT_FALSE(ls1.equals(ls3));
+    ls1.stripRight(1);
+    getDataCheck("\007example", 8, ls1);
+    EXPECT_FALSE(ls1.equals(ls3));
+
+    ASSERT_FALSE(ls1.equals(ls2));
+    ls2.stripRight(2);
+    getDataCheck("\007example", 8, ls2);
+    EXPECT_TRUE(ls1.equals(ls2));
+}
+
+TEST_F(LabelSequenceTest, stripOutOfRange) {
+    EXPECT_THROW(ls1.stripLeft(100), isc::OutOfRange);
+    EXPECT_THROW(ls1.stripLeft(5), isc::OutOfRange);
+    EXPECT_THROW(ls1.stripLeft(4), isc::OutOfRange);
+    EXPECT_THROW(ls1.stripLeft(3), isc::OutOfRange);
+    getDataCheck("\007example\003org\000", 13, ls1);
+
+    EXPECT_THROW(ls1.stripRight(100), isc::OutOfRange);
+    EXPECT_THROW(ls1.stripRight(5), isc::OutOfRange);
+    EXPECT_THROW(ls1.stripRight(4), isc::OutOfRange);
+    EXPECT_THROW(ls1.stripRight(3), isc::OutOfRange);
+    getDataCheck("\007example\003org\000", 13, ls1);
+}
+
+TEST_F(LabelSequenceTest, getLabelCount) {
+    EXPECT_EQ(3, ls1.getLabelCount());
+    ls1.stripLeft(0);
+    EXPECT_EQ(3, ls1.getLabelCount());
+    ls1.stripLeft(1);
+    EXPECT_EQ(2, ls1.getLabelCount());
+    ls1.stripLeft(1);
+    EXPECT_EQ(1, ls1.getLabelCount());
+
+    EXPECT_EQ(3, ls2.getLabelCount());
+    ls2.stripRight(1);
+    EXPECT_EQ(2, ls2.getLabelCount());
+    ls2.stripRight(1);
+    EXPECT_EQ(1, ls2.getLabelCount());
+
+    EXPECT_EQ(3, ls3.getLabelCount());
+    ls3.stripRight(2);
+    EXPECT_EQ(1, ls3.getLabelCount());
+
+    EXPECT_EQ(5, ls4.getLabelCount());
+    ls4.stripRight(3);
+    EXPECT_EQ(2, ls4.getLabelCount());
+
+    EXPECT_EQ(3, ls5.getLabelCount());
+    ls5.stripLeft(2);
+    EXPECT_EQ(1, ls5.getLabelCount());
+}
+
+TEST_F(LabelSequenceTest, comparePart) {
+    EXPECT_FALSE(ls1.equals(ls8));
+
+    // strip root label from example.org.
+    ls1.stripRight(1);
+    // strip foo from foo.example.org.bar.
+    ls8.stripLeft(1);
+    // strip bar. (i.e. bar and root) too
+    ls8.stripRight(2);
+
+    EXPECT_TRUE(ls1.equals(ls8));
+
+    // Data comparison
+    size_t len;
+    const uint8_t* data = ls1.getData(&len);
+    getDataCheck(data, len, ls8);
+}
+
+TEST_F(LabelSequenceTest, isAbsolute) {
+    ASSERT_TRUE(ls1.isAbsolute());
+
+    ls1.stripLeft(1);
+    ASSERT_TRUE(ls1.isAbsolute());
+    ls1.stripRight(1);
+    ASSERT_FALSE(ls1.isAbsolute());
+
+    ASSERT_TRUE(ls2.isAbsolute());
+    ls2.stripRight(1);
+    ASSERT_FALSE(ls2.isAbsolute());
+
+    ASSERT_TRUE(ls3.isAbsolute());
+    ls3.stripLeft(2);
+    ASSERT_TRUE(ls3.isAbsolute());
+}
+
+TEST_F(LabelSequenceTest, toText) {
+    EXPECT_EQ(".", ls7.toText());
+
+    EXPECT_EQ("example.org.", ls1.toText());
+    ls1.stripLeft(1);
+    EXPECT_EQ("org.", ls1.toText());
+    ls1.stripLeft(1);
+    EXPECT_EQ(".", ls1.toText());
+
+    EXPECT_EQ("example.com.", ls2.toText());
+    ls2.stripRight(1);
+    EXPECT_EQ("example.com", ls2.toText());
+    ls2.stripRight(1);
+    EXPECT_EQ("example", ls2.toText());
+
+    EXPECT_EQ("foo.example.org.bar.", ls8.toText());
+    ls8.stripRight(2);
+    EXPECT_EQ("foo.example.org", ls8.toText());
+
+    EXPECT_EQ(".", ls7.toText());
+    EXPECT_THROW(ls7.stripLeft(1), isc::OutOfRange);
+
+    Name n_long1("012345678901234567890123456789"
+                 "012345678901234567890123456789012."
+                 "012345678901234567890123456789"
+                 "012345678901234567890123456789012."
+                 "012345678901234567890123456789"
+                 "012345678901234567890123456789012."
+                 "012345678901234567890123456789"
+                 "0123456789012345678901234567890");
+    LabelSequence ls_long1(n_long1);
+
+    EXPECT_EQ("012345678901234567890123456789"
+              "012345678901234567890123456789012."
+              "012345678901234567890123456789"
+              "012345678901234567890123456789012."
+              "012345678901234567890123456789"
+              "012345678901234567890123456789012."
+              "012345678901234567890123456789"
+              "0123456789012345678901234567890.", ls_long1.toText());
+    ls_long1.stripRight(1);
+    EXPECT_EQ("012345678901234567890123456789"
+              "012345678901234567890123456789012."
+              "012345678901234567890123456789"
+              "012345678901234567890123456789012."
+              "012345678901234567890123456789"
+              "012345678901234567890123456789012."
+              "012345678901234567890123456789"
+              "0123456789012345678901234567890", ls_long1.toText());
+
+    LabelSequence ls_long2(n_maxlabel);
+
+    EXPECT_EQ("0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+              "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+              "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+              "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+              "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+              "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+              "0.1.2.3.4.5.6.", ls_long2.toText());
+    ls_long2.stripRight(1);
+    EXPECT_EQ("0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+              "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+              "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+              "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+              "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+              "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9."
+              "0.1.2.3.4.5.6", ls_long2.toText());
+    ls_long2.stripRight(125);
+    EXPECT_EQ("0.1", ls_long2.toText());
+}
+
+// The following verifies that toRawText() returns a string
+// actual characters in place of escape sequences.  We do not
+// bother with an exhaustive set of tests here as this is
+// not a primary use case.
+TEST_F(LabelSequenceTest, toRawText) {
+    Name n("a bc.$exa(m)ple.@org");
+    LabelSequence l(n);
+    EXPECT_EQ("a bc.$exa(m)ple.@org", l.toRawText(true));
+    EXPECT_EQ("a bc.$exa(m)ple.@org.", l.toRawText(false));
+
+    // toRawText is not supposed to do any sanity checks.
+    // Let's try with a very weird name.
+    Name n2("xtra\tchars\n.in.name");
+    LabelSequence l2(n2);
+    EXPECT_EQ("xtra\tchars\n.in.name.", l2.toRawText(false));
+}
+
+// The following are test data used in the getHash test below.  Normally
+// we use example/documentation domain names for testing, but in this case
+// we'd specifically like to use more realistic data, and are intentionally
+// using real-world samples: They are the NS names of root and some top level
+// domains as of this test.
+const char* const root_servers[] = {
+    "a.root-servers.net", "b.root-servers.net", "c.root-servers.net",
+    "d.root-servers.net", "e.root-servers.net", "f.root-servers.net",
+    "g.root-servers.net", "h.root-servers.net", "i.root-servers.net",
+    "j.root-servers.net", "k.root-servers.net", "l.root-servers.net",
+    "m.root-servers.net", NULL
+};
+
+const char* const jp_servers[] = {
+    "a.dns.jp", "b.dns.jp", "c.dns.jp", "d.dns.jp", "e.dns.jp",
+    "f.dns.jp", "g.dns.jp", NULL
+};
+const char* const cn_servers[] = {
+    "a.dns.cn", "b.dns.cn", "c.dns.cn", "d.dns.cn", "e.dns.cn",
+    "ns.cernet.net", NULL
+};
+const char* const ca_servers[] = {
+    "k.ca-servers.ca", "e.ca-servers.ca", "a.ca-servers.ca", "z.ca-servers.ca",
+    "tld.isc-sns.net", "c.ca-servers.ca", "j.ca-servers.ca", "l.ca-servers.ca",
+    "sns-pb.isc.org", "f.ca-servers.ca", NULL
+};
+
+// A helper function used in the getHash test below.
+void
+hashDistributionCheck(const char* const* servers) {
+    const size_t BUCKETS = 64;  // constant used in the MessageRenderer
+    set<Name> names;
+    vector<size_t> hash_counts(BUCKETS);
+
+    // Store all test names and their super domain names (excluding the
+    // "root" label) in the set, calculates their hash values, and increments
+    // the counter for the corresponding hash "bucket".
+    for (size_t i = 0; servers[i] != NULL; ++i) {
+        const Name name(servers[i]);
+        for (size_t l = 0; l < name.getLabelCount() - 1; ++l) {
+            pair<set<Name>::const_iterator, bool> ret =
+                names.insert(name.split(l));
+            if (ret.second) {
+                hash_counts[LabelSequence((*ret.first)).getHash(false) %
+                            BUCKETS]++;
+            }
+        }
+    }
+
+    // See how many conflicts we have in the buckets.  For the testing purpose
+    // we expect there's at most 2 conflicts in each set, which is an
+    // arbitrary choice (it should happen to succeed with the hash function
+    // and data we are using; if it's not the case, maybe with an update to
+    // the hash implementation, we should revise the test).
+    for (size_t i = 0; i < BUCKETS; ++i) {
+        EXPECT_GE(3, hash_counts[i]);
+    }
+}
+
+TEST_F(LabelSequenceTest, getHash) {
+    // Trivial case.  The same sequence should have the same hash.
+    EXPECT_EQ(ls1.getHash(true), ls1.getHash(true));
+
+    // Check the case-insensitive mode behavior.
+    EXPECT_EQ(ls1.getHash(false), ls5.getHash(false));
+
+    // Check that the distribution of hash values is "not too bad" (such as
+    // everything has the same hash value due to a stupid bug).  It's
+    // difficult to check such things reliably.  We do some ad hoc tests here.
+    hashDistributionCheck(root_servers);
+    hashDistributionCheck(jp_servers);
+    hashDistributionCheck(cn_servers);
+    hashDistributionCheck(ca_servers);
+}
+
+// test operator<<.  We simply confirm it appends the result of toText().
+TEST_F(LabelSequenceTest, LeftShiftOperator) {
+    ostringstream oss;
+    oss << ls1;
+    EXPECT_EQ(ls1.toText(), oss.str());
+}
+
+TEST_F(LabelSequenceTest, serialize) {
+    // placeholder for serialized data.  We use a sufficiently large space
+    // for testing the overwrapping cases below.
+    uint8_t labels_buf[LabelSequence::MAX_SERIALIZED_LENGTH * 3];
+
+    // vector to store expected and actual data
+    vector<LabelSequence> actual_labelseqs;
+    typedef pair<size_t, const uint8_t*> DataPair;
+    vector<DataPair> expected;
+
+    // An absolute sequence directly constructed from a valid name.
+    // labels = 3, offset sequence = 0, 8, 12, data = "example.com."
+    actual_labelseqs.push_back(ls1);
+    const uint8_t expected_data1[] = {
+        3, 0, 8, 12, 7, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
+        3, 'o', 'r', 'g', 0 };
+    expected.push_back(DataPair(sizeof(expected_data1), expected_data1));
+
+    // Strip the original one from right.
+    // labels = 2, offset sequence = 0, 8, data = "example.com" (non absolute)
+    LabelSequence ls_rstripped = ls1;
+    ls_rstripped.stripRight(1);
+    actual_labelseqs.push_back(ls_rstripped);
+    const uint8_t expected_data2[] = {
+        2, 0, 8, 7, 'e', 'x', 'a', 'm', 'p', 'l', 'e',
+        3, 'o', 'r', 'g'};
+    expected.push_back(DataPair(sizeof(expected_data2), expected_data2));
+
+    // Strip the original one from left.
+    // labels = 2, offset sequence = 0, 4, data = "com."
+    // Note that offsets are adjusted so that they begin with 0.
+    LabelSequence ls_lstripped = ls1;
+    ls_lstripped.stripLeft(1);
+    actual_labelseqs.push_back(ls_lstripped);
+    const uint8_t expected_data3[] = { 2, 0, 4, 3, 'o', 'r', 'g', 0 };
+    expected.push_back(DataPair(sizeof(expected_data3), expected_data3));
+
+    // Root label.
+    LabelSequence ls_root(Name::ROOT_NAME());
+    actual_labelseqs.push_back(ls_root);
+    const uint8_t expected_data4[] = { 1, 0, 0 };
+    expected.push_back(DataPair(sizeof(expected_data4), expected_data4));
+
+    // Non absolute single-label.
+    LabelSequence ls_single = ls_rstripped;
+    ls_single.stripRight(1);
+    actual_labelseqs.push_back(ls_single);
+    const uint8_t expected_data5[] = {
+        1, 0, 7, 'e', 'x', 'a', 'm', 'p', 'l', 'e' };
+    expected.push_back(DataPair(sizeof(expected_data5), expected_data5));
+
+    // Labels containing a longest possible label
+    const Name name_longlabel(std::string(63, 'x')); // 63 'x's
+    LabelSequence ls_longlabel(name_longlabel);
+    actual_labelseqs.push_back(ls_longlabel);
+    vector<uint8_t> expected_data6;
+    expected_data6.push_back(2); // 2 labels
+    expected_data6.push_back(0); // 1st offset
+    expected_data6.push_back(64); // 2nd offset
+    expected_data6.push_back(63); // 1st label length
+    expected_data6.insert(expected_data6.end(), 63, 'x'); // 1st label: 63 'x's
+    expected_data6.push_back(0); // 2nd label: trailing 0
+    expected.push_back(DataPair(expected_data6.size(), &expected_data6[0]));
+
+    // Max number of labels and longest possible name
+    EXPECT_EQ(Name::MAX_WIRE, n_maxlabel.getLength());
+    LabelSequence ls_maxlabel(n_maxlabel);
+    actual_labelseqs.push_back(ls_maxlabel);
+    vector<uint8_t> expected_data7;
+    expected_data7.push_back(Name::MAX_LABELS); // number of labels
+    for (size_t i = 0; i < Name::MAX_LABELS; ++i) {
+        expected_data7.push_back(i * 2); // each label has length and 1 byte
+    }
+    // Copy wire data of the name
+    isc::util::OutputBuffer ob(0);
+    n_maxlabel.toWire(ob);
+    expected_data7.insert(expected_data7.end(),
+                          static_cast<const uint8_t*>(ob.getData()),
+                          static_cast<const uint8_t*>(ob.getData()) +
+                          ob.getLength());
+    expected.push_back(DataPair(expected_data7.size(), &expected_data7[0]));
+
+    // For each data set, serialize the labels and compare the data to the
+    // expected one.
+    vector<DataPair>::const_iterator it = expected.begin();
+    vector<LabelSequence>::const_iterator itl = actual_labelseqs.begin();
+    for (; it != expected.end(); ++it, ++itl) {
+        SCOPED_TRACE(itl->toText());
+
+        const size_t serialized_len = itl->getSerializedLength();
+
+        ASSERT_GE(LabelSequence::MAX_SERIALIZED_LENGTH, serialized_len);
+        itl->serialize(labels_buf, serialized_len);
+        EXPECT_EQ(it->first, serialized_len);
+        EXPECT_EQ(0, memcmp(it->second, labels_buf, serialized_len));
+
+        EXPECT_EQ(NameComparisonResult::EQUAL,
+                  LabelSequence(labels_buf).compare(*itl).getRelation());
+
+        // Shift the data to the middle of the buffer for overwrap check
+        uint8_t* const bp = labels_buf;
+        std::memcpy(bp + serialized_len, bp, serialized_len);
+        // Memory layout is now as follows:
+        //   <- ser_len ->          <- ser_len ------>
+        // bp             bp+ser_len                  bp+(ser_len*2)
+        //                           olen,odata,ndata
+
+        // end of buffer would be the first byte of offsets: invalid.
+        EXPECT_THROW(LabelSequence(bp + serialized_len).
+                     serialize(bp + 2, serialized_len),
+                     isc::BadValue);
+        // begin of buffer would be the last byte of ndata: invalid.
+        EXPECT_THROW(LabelSequence(bp + serialized_len).
+                     serialize(bp + (2 * serialized_len) - 1, serialized_len),
+                     isc::BadValue);
+        // A boundary safe case: buffer is placed after the sequence data.
+        // should cause no disruption.
+        LabelSequence(bp + serialized_len).
+                     serialize(bp + 2 * serialized_len, serialized_len);
+        // A boundary safe case: buffer is placed before the sequence data
+        // should cause no disruption. (but the original serialized data will
+        // be overridden, so it can't be used any more)
+        LabelSequence(bp + serialized_len).
+                     serialize(bp + 1, serialized_len);
+    }
+
+    EXPECT_THROW(ls1.serialize(labels_buf, ls1.getSerializedLength() - 1),
+                 isc::BadValue);
+}
+
+#ifdef ENABLE_DEBUG
+
+// These checks are enabled only in debug mode in the LabelSequence
+// class.
+TEST_F(LabelSequenceTest, badDeserialize) {
+    EXPECT_THROW(LabelSequence(NULL), isc::BadValue);
+    const uint8_t zero_offsets[] = { 0 };
+    EXPECT_THROW(LabelSequence ls(zero_offsets), isc::BadValue);
+    const uint8_t toomany_offsets[] = { Name::MAX_LABELS + 1 };
+    EXPECT_THROW(LabelSequence ls(toomany_offsets), isc::BadValue);
+
+    // (second) offset does not match actual label length
+    const uint8_t offsets_wrongoffset[] = { 2, 0, 64, 1 };
+    EXPECT_THROW(LabelSequence ls(offsets_wrongoffset), isc::BadValue);
+
+    // offset matches, but exceeds MAX_LABEL_LEN
+    const uint8_t offsets_toolonglabel[] = { 2, 0, 64, 64 };
+    EXPECT_THROW(LabelSequence ls(offsets_toolonglabel), isc::BadValue);
+
+    // Inconsistent data: an offset is lower than the previous offset
+    const uint8_t offsets_lower[] = { 3, // # of offsets
+                                      0, 2, 1, // offsets
+                                      1, 'a', 1, 'b', 0};
+    EXPECT_THROW(LabelSequence ls(offsets_lower), isc::BadValue);
+
+    // Inconsistent data: an offset is equal to the previous offset
+    const uint8_t offsets_noincrease[] = { 2, 0, 0, 0, 0 };
+    EXPECT_THROW(LabelSequence ls(offsets_noincrease), isc::BadValue);
+}
+
+#endif
+
+namespace {
+
+// Helper function; repeatedly calls
+// - Initially, all three labelsequences should be the same
+// - repeatedly performs:
+//   - checks all three are equal
+//   - stripLeft on ls1
+//   - checks ls1 and ls2 are different, and ls2 and ls3 are equal
+//   - stripLeft on ls2
+//   - checks ls1 and ls2 are equal, and ls2 and ls3 are different
+//   - stripLeft on ls3
+//
+// (this test makes sure the stripLeft of one has no effect on the other
+// two, and that the strip properties hold regardless of how they were
+// constructed)
+//
+void stripLeftCheck(LabelSequence ls1, LabelSequence ls2, LabelSequence ls3) {
+    ASSERT_LT(1, ls1.getLabelCount());
+    while (ls1.getLabelCount() > 1) {
+        check_equal(ls1, ls2);
+        check_equal(ls2, ls3);
+
+        ls1.stripLeft(1);
+        check_compare(ls1, ls2, isc::dns::NameComparisonResult::SUPERDOMAIN,
+                      ls1.getLabelCount(), true, -1);
+        check_equal(ls2, ls3);
+
+        ls2.stripLeft(1);
+        check_equal(ls1, ls2);
+        check_compare(ls2, ls3, isc::dns::NameComparisonResult::SUPERDOMAIN,
+                      ls1.getLabelCount(), true, -1);
+
+        ls3.stripLeft(1);
+    }
+}
+
+// Similar to stripLeftCheck, but using stripRight()
+void stripRightCheck(LabelSequence ls1, LabelSequence ls2, LabelSequence ls3) {
+    ASSERT_LT(1, ls1.getLabelCount());
+    while (ls1.getLabelCount() > 1) {
+        check_equal(ls1, ls2);
+        check_equal(ls2, ls3);
+
+        ls1.stripRight(1);
+        check_compare(ls1, ls2, isc::dns::NameComparisonResult::NONE, 0,
+                      false);
+        check_equal(ls2, ls3);
+
+        ls2.stripRight(1);
+        check_equal(ls1, ls2);
+        check_compare(ls2, ls3, isc::dns::NameComparisonResult::NONE, 0,
+                      false);
+
+        ls3.stripRight(1);
+    }
+}
+
+} // end anonymous namespace
+
+class ExtendableLabelSequenceTest : public ::testing::Test {
+public:
+    ExtendableLabelSequenceTest() : bar("bar."),
+                                    example_org("example.org"),
+                                    foo("foo."),
+                                    foo_bar("foo.bar."),
+                                    foo_bar_example_org("foo.bar.example.org."),
+                                    foo_bar_foo_bar("foo.bar.foo.bar."),
+                                    foo_example("foo.example."),
+                                    org("org")
+    {
+        // explicitly set to non-zero data, to make sure
+        // we don't try to use data we don't set
+        memset(buf, 0xff, LabelSequence::MAX_SERIALIZED_LENGTH);
+    }
+
+    Name bar;
+    Name example_org;
+    Name foo;
+    Name foo_bar;
+    Name foo_bar_example_org;
+    Name foo_bar_foo_bar;
+    Name foo_example;
+    Name org;
+
+    uint8_t buf[LabelSequence::MAX_SERIALIZED_LENGTH];
+};
+
+// Test that 'extendable' labelsequences behave correctly when using
+// stripLeft() and stripRight()
+TEST_F(ExtendableLabelSequenceTest, extendableLabelSequence) {
+    LabelSequence ls1(example_org);
+    LabelSequence ls2(example_org);
+
+    LabelSequence els(ls1, buf);
+    // ls1 is absolute, so els should be too
+    EXPECT_TRUE(els.isAbsolute());
+    check_equal(ls1, els);
+
+    ASSERT_EQ(ls1.getDataLength(), els.getDataLength());
+    stripLeftCheck(ls1, els, ls2);
+    stripRightCheck(ls1, els, ls2);
+
+    // Creating an extendable labelsequence from a non-absolute
+    // label sequence should result in a non-absolute label sequence
+    ls1.stripRight(1);
+    els = LabelSequence(ls1, buf);
+    EXPECT_FALSE(els.isAbsolute());
+    check_equal(ls1, els);
+
+    // and extending with the root label should make it absolute again
+    els.extend(LabelSequence(Name(".")), buf);
+    EXPECT_TRUE(els.isAbsolute());
+    check_equal(ls2, els);
+}
+
+// Test that 'extendable' LabelSequences behave correctly when initialized
+// with a stripped source LabelSequence
+TEST_F(ExtendableLabelSequenceTest, extendableLabelSequenceLeftStrippedSource) {
+    LabelSequence ls1(foo_bar_example_org);
+    LabelSequence ls2(foo_bar_example_org);
+
+    while (ls1.getLabelCount() > 2) {
+        ls1.stripLeft(1);
+        ls2.stripLeft(1);
+
+        LabelSequence els(ls1, buf);
+
+        ASSERT_EQ(ls1.getDataLength(), els.getDataLength());
+        stripLeftCheck(ls1, els, ls2);
+        stripRightCheck(ls1, els, ls2);
+    }
+}
+
+TEST_F(ExtendableLabelSequenceTest, extendableLabelSequenceRightStrippedSource) {
+    LabelSequence ls1(foo_bar_example_org);
+    LabelSequence ls2(foo_bar_example_org);
+
+    while (ls1.getLabelCount() > 2) {
+        ls1.stripRight(1);
+        ls2.stripRight(1);
+
+        LabelSequence els(ls1, buf);
+
+        ASSERT_EQ(ls1.getDataLength(), els.getDataLength());
+        stripLeftCheck(ls1, els, ls2);
+        stripRightCheck(ls1, els, ls2);
+    }
+}
+
+// Check some basic 'extend' functionality
+TEST_F(ExtendableLabelSequenceTest, extend) {
+    LabelSequence ls1(foo_bar);
+    LabelSequence ls2(foo);
+    LabelSequence ls3(bar);
+    LabelSequence ls4(foo_bar);
+
+    LabelSequence els(ls2, buf);
+
+    check_compare(ls1, els, isc::dns::NameComparisonResult::COMMONANCESTOR, 1,
+                  true, -4);
+    els.extend(ls3, buf);
+    EXPECT_TRUE(els.isAbsolute());
+
+    check_equal(ls1, els);
+    stripLeftCheck(ls1, els, ls4);
+    stripRightCheck(ls1, els, ls4);
+
+    // strip, then extend again
+    els.stripRight(2); // (2, 1 for root label, 1 for last label)
+    els.extend(ls3, buf);
+    EXPECT_TRUE(els.isAbsolute());
+    check_equal(ls1, els);
+
+    // Extending again should make it different
+    els.extend(ls3, buf);
+    EXPECT_TRUE(els.isAbsolute());
+    check_compare(ls1, els, isc::dns::NameComparisonResult::COMMONANCESTOR, 2,
+                  true, 4);
+
+    // Extending with a non-absolute name should make it non-absolute as well
+    ls3.stripRight(1);
+    els.extend(ls3, buf);
+    EXPECT_FALSE(els.isAbsolute());
+
+    Name check_name("foo.bar.bar.bar");
+    LabelSequence check_ls(check_name);
+    check_ls.stripRight(1);
+    check_equal(check_ls, els);
+
+    // And try extending when both are not absolute
+    els.stripRight(3);
+    ls1.stripRight(1);
+    EXPECT_FALSE(els.isAbsolute());
+    els.extend(ls3, buf);
+    EXPECT_FALSE(els.isAbsolute());
+    check_equal(ls1, els);
+
+    // Extending non-absolute with absolute should make it absolute again
+    EXPECT_FALSE(els.isAbsolute());
+    els.extend(LabelSequence(Name("absolute.")), buf);
+    EXPECT_TRUE(els.isAbsolute());
+    check_equal(LabelSequence(Name("foo.bar.absolute")), els);
+}
+
+TEST_F(ExtendableLabelSequenceTest, extendLeftStripped) {
+    LabelSequence ls1(foo_example);
+    LabelSequence ls2(example_org);
+    LabelSequence ls3(org);
+
+    LabelSequence els(ls1, buf);
+
+    els.stripLeft(1);
+    els.extend(ls3, buf);
+    EXPECT_TRUE(els.isAbsolute());
+    check_equal(ls2, els);
+}
+
+// Check that when extending with itself, it does not cause horrible failures
+TEST_F(ExtendableLabelSequenceTest, extendWithItself) {
+    LabelSequence ls1(foo_bar);
+    LabelSequence ls2(foo_bar_foo_bar);
+
+    LabelSequence els(ls1, buf);
+
+    els.extend(els, buf);
+    EXPECT_TRUE(els.isAbsolute());
+    check_equal(ls2, els);
+
+    // Also try for non-absolute names
+    ls2.stripRight(1);
+    els = LabelSequence(ls1, buf);
+    els.stripRight(1);
+    els.extend(els, buf);
+    EXPECT_FALSE(els.isAbsolute());
+    check_equal(ls2, els);
+
+    // Once more, now start out with non-absolute labelsequence
+    ls1.stripRight(1);
+    els = LabelSequence(ls1, buf);
+    els.extend(els, buf);
+    EXPECT_FALSE(els.isAbsolute());
+    check_equal(ls2, els);
+}
+
+// Test that 'extending' with just a root label is a no-op, iff the original
+// was already absolute
+TEST_F(ExtendableLabelSequenceTest, extendWithRoot) {
+    LabelSequence ls1(example_org);
+
+    LabelSequence els(LabelSequence(ls1, buf));
+    check_equal(ls1, els);
+    els.extend(LabelSequence(Name(".")), buf);
+    EXPECT_TRUE(els.isAbsolute());
+    check_equal(ls1, els);
+
+    // but not if the original was not absolute (it will be equal to
+    // the original labelsequence used above, but not the one it was based
+    // on).
+    LabelSequence ls2(example_org);
+    ls2.stripRight(1);
+    els = LabelSequence(ls2, buf);
+    EXPECT_FALSE(els.isAbsolute());
+    els.extend(LabelSequence(Name(".")), buf);
+    EXPECT_TRUE(els.isAbsolute());
+    check_equal(ls1, els);
+    check_compare(ls2, els, isc::dns::NameComparisonResult::NONE, 0, true, 3);
+}
+
+// Check possible failure modes of extend()
+TEST_F(ExtendableLabelSequenceTest, extendBadData) {
+    LabelSequence ls1(example_org);
+
+    LabelSequence els(ls1, buf);
+
+    // try use with unrelated labelsequence
+    EXPECT_THROW(ls1.extend(ls1, buf), isc::BadValue);
+
+    // Create a long name, but so that we can still extend once
+    Name longlabel("1234567890123456789012345678901234567890"
+                   "12345678901234567890");
+    LabelSequence long_ls(longlabel);
+    els = LabelSequence(long_ls, buf);
+    els.extend(els, buf);
+    els.extend(long_ls, buf);
+    els.extend(long_ls, buf);
+    ASSERT_EQ(245, els.getDataLength());
+    // Extending once more with 10 bytes should still work
+    els.extend(LabelSequence(Name("123456789")), buf);
+    EXPECT_TRUE(els.isAbsolute());
+
+    // Extended label sequence should now look like
+    const Name full_name(
+        "123456789012345678901234567890123456789012345678901234567890."
+        "123456789012345678901234567890123456789012345678901234567890."
+        "123456789012345678901234567890123456789012345678901234567890."
+        "123456789012345678901234567890123456789012345678901234567890."
+        "123456789.");
+    const LabelSequence full_ls(full_name);
+    check_equal(full_ls, els);
+
+    // But now, even the shortest extension should fail
+    EXPECT_THROW(els.extend(LabelSequence(Name("1")), buf), isc::BadValue);
+
+    // Check it hasn't been changed
+    EXPECT_TRUE(els.isAbsolute());
+    check_equal(full_ls, els);
+
+    // Also check that extending past MAX_LABELS is not possible
+    Name shortname("1.");
+    LabelSequence short_ls(shortname);
+    els = LabelSequence(short_ls, buf);
+    for (size_t i=0; i < 126; ++i) {
+        els.extend(short_ls, buf);
+    }
+
+    // Should now look like this
+    const Name full_name2(
+        "1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1."
+        "1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1."
+        "1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1."
+        "1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1.1."
+        "1.1.1.1.1.1.1.");
+    const LabelSequence full_ls2(full_name2);
+    EXPECT_TRUE(els.isAbsolute());
+    check_equal(full_ls2, els);
+
+    EXPECT_THROW(els.extend(short_ls, buf), isc::BadValue);
+
+    EXPECT_TRUE(els.isAbsolute());
+    check_equal(full_ls2, els);
+}
+
+// Check the static fixed 'wildcard' LabelSequence
+TEST(WildCardLabelSequence, wildcard) {
+    ASSERT_FALSE(LabelSequence::WILDCARD().isAbsolute());
+    ASSERT_EQ("*", LabelSequence::WILDCARD().toText());
+}
+
+}
diff --git a/src/lib/dns/tests/master_lexer_inputsource_unittest.cc b/src/lib/dns/tests/master_lexer_inputsource_unittest.cc
new file mode 100644
index 0000000..c5f618a
--- /dev/null
+++ b/src/lib/dns/tests/master_lexer_inputsource_unittest.cc
@@ -0,0 +1,368 @@
+// Copyright (C) 2012-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <dns/master_lexer_inputsource.h>
+#include <dns/master_lexer.h>
+#include <exceptions/exceptions.h>
+
+#include <gtest/gtest.h>
+
+#include <iostream>
+#include <sstream>
+#include <string>
+
+#include <string.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::dns::master_lexer_internal;
+
+namespace {
+
+const char* const test_input =
+    "Line1 to scan.\nLine2 to scan.\nLine3 to scan.\n";
+
+class InputSourceTest : public ::testing::Test {
+protected:
+    InputSourceTest() :
+        str_(test_input),
+        str_length_(strlen(str_)),
+        iss_(str_),
+        source_(iss_)
+    {}
+
+    const char* str_;
+    const size_t str_length_;
+    stringstream iss_;
+    InputSource source_;
+};
+
+// Test the default return values set during InputSource construction.
+TEST_F(InputSourceTest, defaults) {
+    EXPECT_EQ(1, source_.getCurrentLine());
+    EXPECT_FALSE(source_.atEOF());
+}
+
+// getName() on file and stream sources
+TEST_F(InputSourceTest, getName) {
+    EXPECT_EQ(0, source_.getName().find("stream-"));
+
+    // Use some file; doesn't really matter what.
+    InputSource source2(TEST_DATA_SRCDIR "/masterload.txt");
+    EXPECT_EQ(TEST_DATA_SRCDIR "/masterload.txt", source2.getName());
+}
+
+TEST_F(InputSourceTest, nonExistentFile) {
+    EXPECT_THROW({
+        InputSource source(TEST_DATA_SRCDIR "/does-not-exist");
+    }, InputSource::OpenError);
+}
+
+// getChar() should return characters from the input stream in
+// sequence. ungetChar() should skip backwards.
+void
+checkGetAndUngetChar(InputSource& source,
+                     const char* str, const size_t str_length)
+{
+    for (size_t i = 0; i < str_length; ++i) {
+        EXPECT_EQ(str[i], source.getChar());
+        EXPECT_EQ(i + 1, source.getPosition());
+        EXPECT_FALSE(source.atEOF());
+    }
+
+    // At this point, we still have not reached EOF.
+    EXPECT_FALSE(source.atEOF());
+
+    // This should cause EOF to be set.
+    EXPECT_EQ(InputSource::END_OF_STREAM, source.getChar());
+
+    // Now, EOF should be set.
+    EXPECT_TRUE(source.atEOF());
+
+    // It doesn't increase the position count.
+    EXPECT_EQ(str_length, source.getPosition());
+    EXPECT_EQ(str_length, source.getSize()); // this should be == getSize().
+
+    // Now, let's go backwards. This should cause the EOF to be set to
+    // false.
+    source.ungetChar();
+
+    // Now, EOF should be false.
+    EXPECT_FALSE(source.atEOF());
+
+    // But the position shouldn't change.
+    EXPECT_EQ(str_length, source.getPosition());
+
+    // This should cause EOF to be set again.
+    EXPECT_EQ(InputSource::END_OF_STREAM, source.getChar());
+
+    // Now, EOF should be set.
+    EXPECT_TRUE(source.atEOF());
+
+    // Now, let's go backwards in a loop. Start by skipping the EOF.
+    source.ungetChar();
+
+    for (size_t i = 0; i < str_length; ++i) {
+        const size_t index = str_length - 1 - i;
+        // Skip one character.
+        source.ungetChar();
+        EXPECT_EQ(str[index], source.getChar());
+        EXPECT_EQ(index + 1, source.getPosition());
+        // Skip the character we received again.
+        source.ungetChar();
+    }
+
+    // Skipping past the start of buffer should throw.
+    EXPECT_THROW(source.ungetChar(), InputSource::UngetBeforeBeginning);
+}
+
+TEST_F(InputSourceTest, stream) {
+    checkGetAndUngetChar(source_, str_, str_length_);
+}
+
+TEST_F(InputSourceTest, file) {
+    std::ifstream fs(TEST_DATA_SRCDIR "/masterload.txt");
+    const std::string str((std::istreambuf_iterator<char>(fs)),
+                          std::istreambuf_iterator<char>());
+    fs.close();
+
+    InputSource source(TEST_DATA_SRCDIR "/masterload.txt");
+    checkGetAndUngetChar(source, str.c_str(), str.size());
+}
+
+// ungetAll() should skip back to the place where the InputSource
+// started at construction, or the last saved start of line.
+TEST_F(InputSourceTest, ungetAll) {
+    while (!source_.atEOF()) {
+        source_.getChar();
+    }
+
+    // Now, we are at EOF.
+    EXPECT_TRUE(source_.atEOF());
+    EXPECT_EQ(4, source_.getCurrentLine());
+
+    source_.ungetAll();
+
+    // Now we are back to where we started.
+    EXPECT_EQ(1, source_.getCurrentLine());
+    EXPECT_FALSE(source_.atEOF());
+    EXPECT_EQ(0, source_.getPosition());
+}
+
+TEST_F(InputSourceTest, compact) {
+    // Compact at the start
+    source_.compact();
+
+    // Ungetting here must throw.
+    EXPECT_THROW(source_.ungetChar(), InputSource::UngetBeforeBeginning);
+
+    for (size_t i = 0; i < str_length_; ++i) {
+        EXPECT_EQ(str_[i], source_.getChar());
+        EXPECT_FALSE(source_.atEOF());
+    }
+
+    // At this point, we still have not reached EOF.
+    EXPECT_FALSE(source_.atEOF());
+
+    // This should cause EOF to be set.
+    EXPECT_EQ(InputSource::END_OF_STREAM, source_.getChar());
+
+    // Now, EOF should be set.
+    EXPECT_TRUE(source_.atEOF());
+    EXPECT_EQ(4, source_.getCurrentLine());
+
+    // Compact again
+    source_.compact();
+
+    // We are still at EOF.
+    EXPECT_TRUE(source_.atEOF());
+    EXPECT_EQ(4, source_.getCurrentLine());
+
+    // compact shouldn't change the position count.
+    EXPECT_EQ(source_.getSize(), source_.getPosition());
+
+    // Skip the EOF.
+    source_.ungetChar();
+
+    // Ungetting here must throw.
+    EXPECT_THROW(source_.ungetChar(), InputSource::UngetBeforeBeginning);
+
+    EXPECT_EQ(InputSource::END_OF_STREAM, source_.getChar());
+    EXPECT_TRUE(source_.atEOF());
+}
+
+TEST_F(InputSourceTest, markDuring) {
+    // First, skip to line 2.
+    while (!source_.atEOF() &&
+           (source_.getCurrentLine() != 2)) {
+        source_.getChar();
+    }
+    EXPECT_FALSE(source_.atEOF());
+    EXPECT_EQ(2, source_.getCurrentLine());
+
+    // Now, unget a couple of characters. This should cause the
+    // buffer_pos_ to be not equal to the size of the buffer.
+    source_.ungetChar();
+    source_.ungetChar();
+
+    // Now "mark" the source, meaning that we save line number and also
+    // compact the internal buffer at this stage.
+    source_.mark();
+
+    // Ungetting here must throw.
+    EXPECT_THROW(source_.ungetChar(), InputSource::UngetBeforeBeginning);
+
+    for (size_t i = 13; i < str_length_; ++i) {
+        EXPECT_EQ(str_[i], source_.getChar());
+        EXPECT_FALSE(source_.atEOF());
+    }
+
+    // At this point, we still have not reached EOF.
+    EXPECT_FALSE(source_.atEOF());
+
+    // This should cause EOF to be set.
+    EXPECT_EQ(InputSource::END_OF_STREAM, source_.getChar());
+
+    // Now, EOF should be set.
+    EXPECT_TRUE(source_.atEOF());
+
+    // Now, ungetAll() and check where it goes back.
+    source_.ungetAll();
+
+    // Ungetting here must throw.
+    EXPECT_THROW(source_.ungetChar(), InputSource::UngetBeforeBeginning);
+
+    for (size_t i = 13; i < str_length_; ++i) {
+        EXPECT_EQ(str_[i], source_.getChar());
+        EXPECT_FALSE(source_.atEOF());
+    }
+
+    // At this point, we still have not reached EOF.
+    EXPECT_FALSE(source_.atEOF());
+
+    // This should cause EOF to be set.
+    EXPECT_EQ(InputSource::END_OF_STREAM, source_.getChar());
+
+    // Now, EOF should be set.
+    EXPECT_TRUE(source_.atEOF());
+}
+
+// Test line counters.
+TEST_F(InputSourceTest, lines) {
+    size_t line = 1;
+    while (!source_.atEOF()) {
+        if (source_.getChar() == '\n') {
+            ++line;
+        }
+        EXPECT_EQ(line, source_.getCurrentLine());
+    }
+
+    // Now, we are at EOF.
+    EXPECT_TRUE(source_.atEOF());
+    EXPECT_EQ(4, source_.getCurrentLine());
+
+    // Go backwards 2 characters, skipping the last EOF and '\n'.
+    source_.ungetChar();
+    source_.ungetChar();
+
+    EXPECT_FALSE(source_.atEOF());
+    EXPECT_EQ(3, source_.getCurrentLine());
+
+    source_.ungetAll();
+
+    // Now we are back to where we started.
+    EXPECT_EQ(1, source_.getCurrentLine());
+    EXPECT_FALSE(source_.atEOF());
+
+    // Now check that line numbers are decremented properly (as much as
+    // possible using the available API).
+    while (!source_.atEOF()) {
+        source_.getChar();
+    }
+    line = source_.getCurrentLine();
+
+    // Now, we are at EOF.
+    EXPECT_TRUE(source_.atEOF());
+    EXPECT_EQ(4, line);
+
+    EXPECT_THROW({
+        while (true) {
+            source_.ungetChar();
+            EXPECT_TRUE(((line == source_.getCurrentLine()) ||
+                         ((line - 1) == source_.getCurrentLine())));
+            line = source_.getCurrentLine();
+        }
+    }, InputSource::UngetBeforeBeginning);
+
+    // Now we are back to where we started.
+    EXPECT_EQ(1, source_.getCurrentLine());
+}
+
+// ungetAll() after saveLine() should skip back to the last-saved place.
+TEST_F(InputSourceTest, saveLine) {
+    // First, skip to line 2.
+    while (!source_.atEOF() &&
+           (source_.getCurrentLine() != 2)) {
+        source_.getChar();
+    }
+    EXPECT_FALSE(source_.atEOF());
+    EXPECT_EQ(2, source_.getCurrentLine());
+
+    // Now, save the line.
+    source_.saveLine();
+
+    // Now, go to EOF
+    while (!source_.atEOF()) {
+        source_.getChar();
+    }
+
+    // Now, we are at EOF.
+    EXPECT_TRUE(source_.atEOF());
+    EXPECT_EQ(4, source_.getCurrentLine());
+
+    // Now, ungetAll() and check where it goes back.
+    source_.ungetAll();
+
+    // Now we are back to where we last-saved.
+    EXPECT_EQ(2, source_.getCurrentLine());
+    EXPECT_FALSE(source_.atEOF());
+}
+
+TEST_F(InputSourceTest, getSize) {
+    // A simple case using string stream
+    EXPECT_EQ(strlen(test_input), source_.getSize());
+
+    // Check it works with an empty input
+    istringstream iss("");
+    EXPECT_EQ(0, InputSource(iss).getSize());
+
+    // Pretend there's an error in seeking in the stream.  It will be
+    // considered a seek specific error, and getSize() returns "unknown".
+    iss.setstate(std::ios_base::failbit);
+    EXPECT_EQ(MasterLexer::SOURCE_SIZE_UNKNOWN, InputSource(iss).getSize());
+    // The fail bit should have been cleared.
+    EXPECT_FALSE(iss.fail());
+
+    // Pretend there's a *critical* error in the stream.  The constructor will
+    // throw in the attempt of getting the input size.
+    iss.setstate(std::ios_base::badbit);
+    EXPECT_THROW(InputSource isrc(iss), InputSource::OpenError);
+
+    // Check with input source from file name.  We hardcode the file size
+    // for simplicity.  It won't change too often.
+    EXPECT_EQ(143, InputSource(TEST_DATA_SRCDIR "/masterload.txt").getSize());
+}
+
+TEST_F(InputSourceTest, getPosition) {
+    // Initially the position is set to 0.  Other cases are tested in tests
+    // for get and unget.
+    EXPECT_EQ(0, source_.getPosition());
+    EXPECT_EQ(0, InputSource(TEST_DATA_SRCDIR "/masterload.txt").getPosition());
+}
+
+} // end namespace
diff --git a/src/lib/dns/tests/master_lexer_state_unittest.cc b/src/lib/dns/tests/master_lexer_state_unittest.cc
new file mode 100644
index 0000000..e810136
--- /dev/null
+++ b/src/lib/dns/tests/master_lexer_state_unittest.cc
@@ -0,0 +1,607 @@
+// Copyright (C) 2012-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <dns/master_lexer.h>
+#include <dns/master_lexer_inputsource.h>
+#include <dns/master_lexer_state.h>
+
+#include <gtest/gtest.h>
+
+#include <sstream>
+
+using namespace isc::dns;
+using namespace master_lexer_internal;
+
+namespace {
+typedef MasterToken Token; // shortcut
+
+class MasterLexerStateTest : public ::testing::Test {
+protected:
+    MasterLexerStateTest() : common_options(MasterLexer::INITIAL_WS),
+                             s_null(NULL),
+                             s_crlf(State::getInstance(State::CRLF)),
+                             s_string(State::getInstance(State::String)),
+                             s_qstring(State::getInstance(State::QString)),
+                             s_number(State::getInstance(State::Number)),
+                             options(MasterLexer::NONE),
+                             orig_options(options)
+    {}
+
+    // Specify INITIAL_WS as common initial options.
+    const MasterLexer::Options common_options;
+    MasterLexer lexer;
+    const State* const s_null;
+    const State& s_crlf;
+    const State& s_string;
+    const State& s_qstring;
+    const State& s_number;
+    std::stringstream ss;
+    MasterLexer::Options options, orig_options;
+};
+
+// Common check for the end-of-file condition.
+// Token is set to END_OF_FILE, and the lexer was NOT last eol state.
+// Passed state can be any valid one; they are stateless, just providing the
+// interface for inspection.
+void
+eofCheck(const State& state, MasterLexer& lexer) {
+    EXPECT_EQ(Token::END_OF_FILE, state.getToken(lexer).getType());
+    EXPECT_FALSE(state.wasLastEOL(lexer));
+}
+
+TEST_F(MasterLexerStateTest, startAndEnd) {
+    // A simple case: the input is empty, so we begin with start and
+    // are immediately done.
+    lexer.pushSource(ss);
+    EXPECT_EQ(s_null, State::start(lexer, common_options));
+    eofCheck(s_crlf, lexer);
+}
+
+TEST_F(MasterLexerStateTest, startToEOL) {
+    ss << "\n";
+    lexer.pushSource(ss);
+
+    EXPECT_EQ(s_null, State::start(lexer, common_options));
+    EXPECT_TRUE(s_crlf.wasLastEOL(lexer));
+    EXPECT_EQ(Token::END_OF_LINE, s_crlf.getToken(lexer).getType());
+
+    // The next lexer session will reach EOF.  Same eof check should pass.
+    EXPECT_EQ(s_null, State::start(lexer, common_options));
+    eofCheck(s_crlf, lexer);
+}
+
+TEST_F(MasterLexerStateTest, space) {
+    // repeat '\t\n' twice (see below), then space after EOL
+    ss << " \t\n\t\n ";
+    lexer.pushSource(ss);
+
+    // by default space characters and tabs will be ignored.  We check this
+    // twice; at the second iteration, it's a white space at the beginning
+    // of line, but since we don't specify INITIAL_WS option, it's treated as
+    // normal space and ignored.
+    for (size_t i = 0; i < 2; ++i) {
+        EXPECT_EQ(s_null, State::start(lexer, MasterLexer::NONE));
+        EXPECT_TRUE(s_crlf.wasLastEOL(lexer));
+        EXPECT_EQ(Token::END_OF_LINE, s_crlf.getToken(lexer).getType());
+    }
+
+    // Now we specify the INITIAL_WS option.  It will be recognized and the
+    // corresponding token will be returned.
+    EXPECT_EQ(s_null, State::start(lexer, MasterLexer::INITIAL_WS));
+    EXPECT_FALSE(s_crlf.wasLastEOL(lexer));
+    EXPECT_EQ(Token::INITIAL_WS, s_crlf.getToken(lexer).getType());
+}
+
+TEST_F(MasterLexerStateTest, parentheses) {
+    ss << "\n(\na\n )\n "; // 1st \n is to check if 'was EOL' is set to false
+    lexer.pushSource(ss);
+
+    EXPECT_EQ(s_null, State::start(lexer, common_options)); // handle \n
+
+    // Now handle '('.  It skips \n and recognize 'a' as string
+    EXPECT_EQ(0, s_crlf.getParenCount(lexer)); // check pre condition
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    EXPECT_EQ(1, s_crlf.getParenCount(lexer)); // check post condition
+    EXPECT_FALSE(s_crlf.wasLastEOL(lexer));
+
+    // skip 'a'
+    s_string.handle(lexer);
+
+    // Then handle ')'.  '\n' before ')' isn't recognized because
+    // it's canceled due to the '('.  Likewise, the space after the '\n'
+    // shouldn't be recognized but should be just ignored.
+    EXPECT_EQ(s_null, State::start(lexer, common_options));
+    EXPECT_EQ(0, s_crlf.getParenCount(lexer));
+
+    // Now, temporarily disabled options are restored: Both EOL and the
+    // initial WS are recognized
+    EXPECT_EQ(Token::END_OF_LINE, s_crlf.getToken(lexer).getType());
+    EXPECT_EQ(s_null, State::start(lexer, common_options));
+    EXPECT_EQ(Token::INITIAL_WS, s_crlf.getToken(lexer).getType());
+}
+
+TEST_F(MasterLexerStateTest, nestedParentheses) {
+    // This is an unusual, but allowed (in this implementation) case.
+    ss << "(a(b)\n c)\n ";
+    lexer.pushSource(ss);
+
+    EXPECT_EQ(&s_string, State::start(lexer, common_options)); // consume '('
+    s_string.handle(lexer);                      // consume 'a'
+    EXPECT_EQ(&s_string, State::start(lexer, common_options)); // consume '('
+    s_string.handle(lexer);                     // consume 'b'
+    EXPECT_EQ(2, s_crlf.getParenCount(lexer)); // now the count is 2
+
+    // Close the inner most parentheses.  count will be decreased, but option
+    // shouldn't be restored yet, so the intermediate EOL or initial WS won't
+    // be recognized.
+    EXPECT_EQ(&s_string, State::start(lexer, common_options)); // consume ')'
+    s_string.handle(lexer);                      // consume 'c'
+    EXPECT_EQ(1, s_crlf.getParenCount(lexer));
+
+    // Close the outermost parentheses.  count will be reset to 0, and original
+    // options are restored.
+    EXPECT_EQ(s_null, State::start(lexer, common_options));
+
+    // Now, temporarily disabled options are restored: Both EOL and the
+    // initial WS are recognized
+    EXPECT_EQ(Token::END_OF_LINE, s_crlf.getToken(lexer).getType());
+    EXPECT_EQ(s_null, State::start(lexer, common_options));
+    EXPECT_EQ(Token::INITIAL_WS, s_crlf.getToken(lexer).getType());
+}
+
+TEST_F(MasterLexerStateTest, unbalancedParentheses) {
+    // Only closing paren is provided.  We prepend a \n to check if it's
+    // correctly canceled after detecting the error.
+    ss << "\n)";
+    ss << "(a";
+    lexer.pushSource(ss);
+
+    EXPECT_EQ(s_null, State::start(lexer, common_options)); // consume '\n'
+    EXPECT_TRUE(s_crlf.wasLastEOL(lexer)); // this \n was remembered
+
+    // Now checking ')'.  The result should be error, count shouldn't be
+    // changed.  "last EOL" should be canceled.
+    EXPECT_EQ(0, s_crlf.getParenCount(lexer));
+    EXPECT_EQ(s_null, State::start(lexer, common_options));
+    EXPECT_EQ(0, s_crlf.getParenCount(lexer));
+    ASSERT_EQ(Token::ERROR, s_crlf.getToken(lexer).getType());
+    EXPECT_EQ(Token::UNBALANCED_PAREN, s_crlf.getToken(lexer).getErrorCode());
+    EXPECT_FALSE(s_crlf.wasLastEOL(lexer));
+
+    // Reach EOF with a dangling open parenthesis.
+    EXPECT_EQ(&s_string, State::start(lexer, common_options)); // consume '('
+    s_string.handle(lexer);                      // consume 'a'
+    EXPECT_EQ(1, s_crlf.getParenCount(lexer));
+    EXPECT_EQ(s_null, State::start(lexer, common_options));    // reach EOF
+    ASSERT_EQ(Token::ERROR, s_crlf.getToken(lexer).getType());
+    EXPECT_EQ(Token::UNBALANCED_PAREN, s_crlf.getToken(lexer).getErrorCode());
+    EXPECT_EQ(0, s_crlf.getParenCount(lexer)); // should be reset to 0
+}
+
+TEST_F(MasterLexerStateTest, startToComment) {
+    // Begin with 'start', detect space, then encounter a comment.  Skip
+    // the rest of the line, and recognize the new line.  Note that the
+    // second ';' is simply ignored.
+    ss << "  ;a;\n";
+    ss << ";a;";           // Likewise, but the comment ends with EOF.
+    lexer.pushSource(ss);
+
+    // Initial whitespace (asked for in common_options)
+    EXPECT_EQ(s_null, State::start(lexer, common_options));
+    EXPECT_EQ(Token::INITIAL_WS, s_crlf.getToken(lexer).getType());
+    // Comment ending with EOL
+    EXPECT_EQ(s_null, State::start(lexer, common_options));
+    EXPECT_EQ(Token::END_OF_LINE, s_crlf.getToken(lexer).getType());
+
+    // Comment ending with EOF
+    EXPECT_EQ(s_null, State::start(lexer, common_options));
+    EXPECT_EQ(Token::END_OF_FILE, s_crlf.getToken(lexer).getType());
+}
+
+TEST_F(MasterLexerStateTest, commentAfterParen) {
+    // comment after an opening parenthesis.  The code that is tested by
+    // other tests should also ensure that it works correctly, but we
+    // check it explicitly.
+    ss << "( ;this is a comment\na)\n";
+    lexer.pushSource(ss);
+
+    // consume '(', skip comments, consume 'a', then consume ')'
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer);
+    EXPECT_EQ(s_null, State::start(lexer, common_options));
+    EXPECT_EQ(Token::END_OF_LINE, s_crlf.getToken(lexer).getType());
+}
+
+TEST_F(MasterLexerStateTest, crlf) {
+    ss << "\r\n";               // case 1
+    ss << "\r ";                // case 2
+    ss << "\r;comment\na";      // case 3
+    ss << "\r";                 // case 4
+    lexer.pushSource(ss);
+
+    // 1. A sequence of \r, \n is recognized as a single 'end-of-line'
+    EXPECT_EQ(&s_crlf, State::start(lexer, common_options)); // recognize '\r'
+    s_crlf.handle(lexer);   // recognize '\n'
+    EXPECT_EQ(Token::END_OF_LINE, s_crlf.getToken(lexer).getType());
+    EXPECT_TRUE(s_crlf.wasLastEOL(lexer));
+
+    // 2. Single '\r' (not followed by \n) is recognized as a single
+    // 'end-of-line'.  then there will be "initial WS"
+    EXPECT_EQ(&s_crlf, State::start(lexer, common_options)); // recognize '\r'
+    // see ' ', "unget" it
+    s_crlf.handle(lexer);
+    EXPECT_EQ(s_null, State::start(lexer, common_options)); // recognize ' '
+    EXPECT_EQ(Token::INITIAL_WS, s_crlf.getToken(lexer).getType());
+
+    // 3. comment between \r and \n
+    EXPECT_EQ(&s_crlf, State::start(lexer, common_options)); // recognize '\r'
+    // skip comments, recognize '\n'
+    s_crlf.handle(lexer);
+    EXPECT_EQ(Token::END_OF_LINE, s_crlf.getToken(lexer).getType());
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // skip 'a'
+
+    // 4. \r then EOF
+    EXPECT_EQ(&s_crlf, State::start(lexer, common_options)); // recognize '\r'
+    // see EOF, then "unget" it
+    s_crlf.handle(lexer);
+    EXPECT_EQ(s_null, State::start(lexer, common_options));  // recognize EOF
+    EXPECT_EQ(Token::END_OF_FILE, s_crlf.getToken(lexer).getType());
+}
+
+// Commonly used check for string related test cases, checking if the given
+// token has expected values.
+void
+stringTokenCheck(const std::string& expected, const MasterToken& token,
+                 bool quoted = false)
+{
+    EXPECT_EQ(quoted ? Token::QSTRING : Token::STRING, token.getType());
+    EXPECT_EQ(expected, token.getString());
+    const std::string actual(token.getStringRegion().beg,
+                             token.getStringRegion().beg +
+                             token.getStringRegion().len);
+    EXPECT_EQ(expected, actual);
+
+    // There should be "hidden" nul-terminator after the string data.
+    ASSERT_NE(static_cast<const char*>(NULL), token.getStringRegion().beg);
+    EXPECT_EQ(0, *(token.getStringRegion().beg + token.getStringRegion().len));
+}
+
+TEST_F(MasterLexerStateTest, string) {
+    // Check with simple strings followed by separate characters
+    ss << "followed-by-EOL\n";
+    ss << "followed-by-CR\r";
+    ss << "followed-by-space ";
+    ss << "followed-by-tab\t";
+    ss << "followed-by-comment;this is comment and ignored\n";
+    ss << "followed-by-paren(closing)";
+    ss << "followed-by-EOF";
+    lexer.pushSource(ss);
+
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // recognize str, see \n
+    EXPECT_FALSE(s_string.wasLastEOL(lexer));
+    stringTokenCheck("followed-by-EOL", s_string.getToken(lexer));
+    EXPECT_EQ(s_null, State::start(lexer, common_options)); // skip \n
+
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // recognize str, see \r
+    stringTokenCheck("followed-by-CR", s_string.getToken(lexer));
+    EXPECT_EQ(&s_crlf, State::start(lexer, common_options)); // handle \r...
+    s_crlf.handle(lexer); // ...and skip it
+
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // recognize str, see ' '
+    stringTokenCheck("followed-by-space", s_string.getToken(lexer));
+
+    // skip ' ', then recognize the next string
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // recognize str, see \t
+    stringTokenCheck("followed-by-tab", s_string.getToken(lexer));
+
+    // skip \t, then recognize the next string
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // recognize str, see comment
+    stringTokenCheck("followed-by-comment", s_string.getToken(lexer));
+    EXPECT_EQ(s_null, State::start(lexer, common_options)); // skip \n after it
+
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // recognize str, see '('
+    stringTokenCheck("followed-by-paren", s_string.getToken(lexer));
+    EXPECT_EQ(&s_string, State::start(lexer, common_options)); // str in ()
+    s_string.handle(lexer); // recognize the str, see ')'
+    stringTokenCheck("closing", s_string.getToken(lexer));
+
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // recognize str, see EOF
+    stringTokenCheck("followed-by-EOF", s_string.getToken(lexer));
+}
+
+TEST_F(MasterLexerStateTest, stringEscape) {
+    // some of the separate characters should be considered part of the
+    // string if escaped.
+    ss << "escaped\\ space ";
+    ss << "escaped\\\ttab ";
+    ss << "escaped\\(paren ";
+    ss << "escaped\\)close ";
+    ss << "escaped\\;comment ";
+    ss << "escaped\\\\ backslash "; // second '\' shouldn't escape ' '
+    lexer.pushSource(ss);
+
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // recognize str, see ' ' at end
+    stringTokenCheck("escaped\\ space", s_string.getToken(lexer));
+
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // recognize str, see ' ' at end
+    stringTokenCheck("escaped\\\ttab", s_string.getToken(lexer));
+
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // recognize str, see ' ' at end
+    stringTokenCheck("escaped\\(paren", s_string.getToken(lexer));
+
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // recognize str, see ' ' at end
+    stringTokenCheck("escaped\\)close", s_string.getToken(lexer));
+
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // recognize str, see ' ' at end
+    stringTokenCheck("escaped\\;comment", s_string.getToken(lexer));
+
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // recognize str, see ' ' in mid
+    stringTokenCheck("escaped\\\\", s_string.getToken(lexer));
+
+    // Confirm the word that follows the escaped '\' is correctly recognized.
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer); // recognize str, see ' ' at end
+    stringTokenCheck("backslash", s_string.getToken(lexer));
+}
+
+TEST_F(MasterLexerStateTest, quotedString) {
+    ss << "\"ignore-quotes\"\n";
+    ss << "\"quoted string\" "; // space is part of the qstring
+    ss << "\"\" "; // empty quoted string
+    // also check other separator characters. note that \r doesn't cause
+    // UNBALANCED_QUOTES.  Not sure if it's intentional, but that's how the
+    // BIND 9 version works, so we follow it (it should be too minor to matter
+    // in practice anyway)
+    ss << "\"quoted()\t\rstring\" ";
+    ss << "\"escape\\ in quote\" ";
+    ss << "\"escaped\\\"\" ";
+    ss << "\"escaped backslash\\\\\" ";
+    ss << "\"no;comment\"";
+    lexer.pushSource(ss);
+
+    // by default, '"' is unexpected (when QSTRING is not specified),
+    // and it returns MasterToken::UNEXPECTED_QUOTES.
+    EXPECT_EQ(s_null, State::start(lexer, common_options));
+    EXPECT_EQ(Token::UNEXPECTED_QUOTES, s_string.getToken(lexer).getErrorCode());
+    // Read it as a QSTRING.
+    s_qstring.handle(lexer); // recognize quoted str, see \n
+    stringTokenCheck("ignore-quotes", s_qstring.getToken(lexer), true);
+    EXPECT_EQ(s_null, State::start(lexer, common_options)); // skip \n after it
+    EXPECT_TRUE(s_string.wasLastEOL(lexer));
+
+    // If QSTRING is specified in option, '"' is regarded as a beginning of
+    // a quoted string.
+    const MasterLexer::Options options = common_options | MasterLexer::QSTRING;
+    EXPECT_EQ(&s_qstring, State::start(lexer, options));
+    EXPECT_FALSE(s_string.wasLastEOL(lexer)); // EOL is canceled due to '"'
+    s_qstring.handle(lexer);
+    stringTokenCheck("quoted string", s_string.getToken(lexer), true);
+
+    // Empty string is okay as qstring
+    EXPECT_EQ(&s_qstring, State::start(lexer, options));
+    s_qstring.handle(lexer);
+    stringTokenCheck("", s_string.getToken(lexer), true);
+
+    // Also checks other separator characters within a qstring
+    EXPECT_EQ(&s_qstring, State::start(lexer, options));
+    s_qstring.handle(lexer);
+    stringTokenCheck("quoted()\t\rstring", s_string.getToken(lexer), true);
+
+    // escape character mostly doesn't have any effect in the qstring
+    // processing
+    EXPECT_EQ(&s_qstring, State::start(lexer, options));
+    s_qstring.handle(lexer);
+    stringTokenCheck("escape\\ in quote", s_string.getToken(lexer), true);
+
+    // The only exception is the quotation mark itself.  Note that the escape
+    // only works on the quotation mark immediately after it.
+    EXPECT_EQ(&s_qstring, State::start(lexer, options));
+    s_qstring.handle(lexer);
+    stringTokenCheck("escaped\"", s_string.getToken(lexer), true);
+
+    // quoted '\' then '"'.  Unlike the previous case '"' shouldn't be
+    // escaped.
+    EXPECT_EQ(&s_qstring, State::start(lexer, options));
+    s_qstring.handle(lexer);
+    stringTokenCheck("escaped backslash\\\\", s_string.getToken(lexer), true);
+
+    // ';' has no meaning in a quoted string (not indicating a comment)
+    EXPECT_EQ(&s_qstring, State::start(lexer, options));
+    s_qstring.handle(lexer);
+    stringTokenCheck("no;comment", s_string.getToken(lexer), true);
+}
+
+TEST_F(MasterLexerStateTest, brokenQuotedString) {
+    ss << "\"unbalanced-quote\n";
+    ss << "\"quoted\\\n\" ";
+    ss << "\"unclosed quote and EOF";
+    lexer.pushSource(ss);
+
+    // EOL is encountered without closing the quote
+    const MasterLexer::Options options = common_options | MasterLexer::QSTRING;
+    EXPECT_EQ(&s_qstring, State::start(lexer, options));
+    s_qstring.handle(lexer);
+    ASSERT_EQ(Token::ERROR, s_qstring.getToken(lexer).getType());
+    EXPECT_EQ(Token::UNBALANCED_QUOTES,
+              s_qstring.getToken(lexer).getErrorCode());
+    // We can resume after the error from the '\n'
+    EXPECT_EQ(s_null, State::start(lexer, options));
+    EXPECT_EQ(Token::END_OF_LINE, s_crlf.getToken(lexer).getType());
+
+    // \n is okay in a quoted string if escaped
+    EXPECT_EQ(&s_qstring, State::start(lexer, options));
+    s_qstring.handle(lexer);
+    stringTokenCheck("quoted\\\n", s_string.getToken(lexer), true);
+
+    // EOF is encountered without closing the quote
+    EXPECT_EQ(&s_qstring, State::start(lexer, options));
+    s_qstring.handle(lexer);
+    ASSERT_EQ(Token::ERROR, s_qstring.getToken(lexer).getType());
+    EXPECT_EQ(Token::UNEXPECTED_END, s_qstring.getToken(lexer).getErrorCode());
+    // If we continue we'll simply see the EOF
+    EXPECT_EQ(s_null, State::start(lexer, options));
+    EXPECT_EQ(Token::END_OF_FILE, s_crlf.getToken(lexer).getType());
+}
+
+TEST_F(MasterLexerStateTest, basicNumbers) {
+    ss << "0 ";
+    ss << "1 ";
+    ss << "12345 ";
+    ss << "4294967295 "; // 2^32-1
+    ss << "4294967296 "; // Out of range
+    ss << "340282366920938463463374607431768211456 ";
+                         // Very much out of range (2^128)
+    ss << "005 ";        // Leading zeroes are ignored
+    ss << "42;asdf\n";   // Number with comment
+    ss << "37";          // Simple number again, here to make
+                         // sure none of the above messed up
+                         // the tokenizer
+    lexer.pushSource(ss);
+
+    // Ask the lexer to recognize numbers as well
+    const MasterLexer::Options options = common_options | MasterLexer::NUMBER;
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer);
+    EXPECT_EQ(0, s_number.getToken(lexer).getNumber());
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer);
+    EXPECT_EQ(1, s_number.getToken(lexer).getNumber());
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer);
+    EXPECT_EQ(12345, s_number.getToken(lexer).getNumber());
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer);
+    EXPECT_EQ(4294967295u, s_number.getToken(lexer).getNumber());
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer);
+    EXPECT_EQ(Token::NUMBER_OUT_OF_RANGE,
+              s_number.getToken(lexer).getErrorCode());
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer);
+    EXPECT_EQ(Token::NUMBER_OUT_OF_RANGE,
+              s_number.getToken(lexer).getErrorCode());
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer);
+    EXPECT_EQ(5, s_number.getToken(lexer).getNumber());
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer);
+    EXPECT_EQ(42, s_number.getToken(lexer).getNumber());
+
+    EXPECT_EQ(s_null, State::start(lexer, options));
+    EXPECT_TRUE(s_crlf.wasLastEOL(lexer));
+    EXPECT_EQ(Token::END_OF_LINE, s_crlf.getToken(lexer).getType());
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer);
+    EXPECT_EQ(37, s_number.getToken(lexer).getNumber());
+
+    // If we continue we'll simply see the EOF
+    EXPECT_EQ(s_null, State::start(lexer, options));
+    EXPECT_EQ(Token::END_OF_FILE, s_crlf.getToken(lexer).getType());
+}
+
+// Test tokens that look like (or start out as) numbers,
+// but turn out to be strings. Tests include escaped characters.
+TEST_F(MasterLexerStateTest, stringNumbers) {
+    ss << "123 ";        // Should be read as a string if the
+                         // NUMBER option is not given
+    ss << "-1 ";         // Negative numbers are interpreted
+                         // as strings (unsigned integers only)
+    ss << "123abc456 ";  // 'Numbers' containing non-digits should
+                         // be interpreted as strings
+    ss << "123\\456 ";   // Numbers containing escaped digits are
+                         // interpreted as strings
+    ss << "3scaped\\ space ";
+    ss << "3scaped\\\ttab ";
+    ss << "3scaped\\(paren ";
+    ss << "3scaped\\)close ";
+    ss << "3scaped\\;comment ";
+    ss << "3scaped\\\\ 8ackslash "; // second '\' shouldn't escape ' '
+
+    lexer.pushSource(ss);
+
+    // Note that common_options does not include MasterLexer::NUMBER,
+    // so the token should be recognized as a string
+    EXPECT_EQ(&s_string, State::start(lexer, common_options));
+    s_string.handle(lexer);
+    stringTokenCheck("123", s_string.getToken(lexer), false);
+
+    // Ask the lexer to recognize numbers as well
+    const MasterLexer::Options options = common_options | MasterLexer::NUMBER;
+
+    EXPECT_EQ(&s_string, State::start(lexer, options));
+    s_string.handle(lexer);
+    stringTokenCheck("-1", s_string.getToken(lexer), false);
+
+    // Starts out as a number, but ends up being a string
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer);
+    stringTokenCheck("123abc456", s_number.getToken(lexer), false);
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer);
+    stringTokenCheck("123\\456", s_number.getToken(lexer), false);
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer); // recognize str, see ' ' at end
+    stringTokenCheck("3scaped\\ space", s_number.getToken(lexer));
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer); // recognize str, see ' ' at end
+    stringTokenCheck("3scaped\\\ttab", s_number.getToken(lexer));
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer); // recognize str, see ' ' at end
+    stringTokenCheck("3scaped\\(paren", s_number.getToken(lexer));
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer); // recognize str, see ' ' at end
+    stringTokenCheck("3scaped\\)close", s_number.getToken(lexer));
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer); // recognize str, see ' ' at end
+    stringTokenCheck("3scaped\\;comment", s_number.getToken(lexer));
+
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer); // recognize str, see ' ' in mid
+    stringTokenCheck("3scaped\\\\", s_number.getToken(lexer));
+
+    // Confirm the word that follows the escaped '\' is correctly recognized.
+    EXPECT_EQ(&s_number, State::start(lexer, options));
+    s_number.handle(lexer); // recognize str, see ' ' at end
+    stringTokenCheck("8ackslash", s_number.getToken(lexer));
+
+    // If we continue we'll simply see the EOF
+    EXPECT_EQ(s_null, State::start(lexer, options));
+    EXPECT_EQ(Token::END_OF_FILE, s_crlf.getToken(lexer).getType());
+}
+
+} // end anonymous namespace
+
diff --git a/src/lib/dns/tests/master_lexer_token_unittest.cc b/src/lib/dns/tests/master_lexer_token_unittest.cc
new file mode 100644
index 0000000..2167a9f
--- /dev/null
+++ b/src/lib/dns/tests/master_lexer_token_unittest.cc
@@ -0,0 +1,162 @@
+// Copyright (C) 2012-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <exceptions/exceptions.h>
+
+#include <dns/master_lexer.h>
+
+#include <gtest/gtest.h>
+
+#include <string>
+
+using namespace isc::dns;
+
+namespace {
+
+const char TEST_STRING[] = "string token";
+// This excludes the ending \0 character
+const size_t TEST_STRING_LEN = sizeof(TEST_STRING) - 1;
+
+class MasterLexerTokenTest : public ::testing::Test {
+protected:
+    MasterLexerTokenTest() :
+        token_eof(MasterToken::END_OF_FILE),
+        token_str(TEST_STRING, TEST_STRING_LEN),
+        token_num(42),
+        token_err(MasterToken::UNEXPECTED_END)
+    {}
+
+    const MasterToken token_eof; // an example of non-value type token
+    const MasterToken token_str;
+    const MasterToken token_num;
+    const MasterToken token_err;
+};
+
+
+TEST_F(MasterLexerTokenTest, strings) {
+    // basic construction and getter checks
+    EXPECT_EQ(MasterToken::STRING, token_str.getType());
+    EXPECT_EQ(std::string("string token"), token_str.getString());
+    std::string strval = "dummy"; // this should be replaced
+    token_str.getString(strval);
+    EXPECT_EQ(std::string("string token"), strval);
+    const MasterToken::StringRegion str_region =
+        token_str.getStringRegion();
+    EXPECT_EQ(TEST_STRING, str_region.beg);
+    EXPECT_EQ(TEST_STRING_LEN, str_region.len);
+
+    // Even if the stored string contains a nul character (in this case,
+    // it happens to be at the end of the string, but could be in the middle),
+    // getString() should return a string object containing the nul.
+    std::string expected_str("string token");
+    expected_str.push_back('\0');
+    EXPECT_EQ(expected_str,
+              MasterToken(TEST_STRING, TEST_STRING_LEN + 1).getString());
+    MasterToken(TEST_STRING, TEST_STRING_LEN + 1).getString(strval);
+    EXPECT_EQ(expected_str, strval);
+
+    // Construct type of qstring
+    EXPECT_EQ(MasterToken::QSTRING,
+              MasterToken(TEST_STRING, sizeof(TEST_STRING), true).
+              getType());
+    // if we explicitly set 'quoted' to false, it should be normal string
+    EXPECT_EQ(MasterToken::STRING,
+              MasterToken(TEST_STRING, sizeof(TEST_STRING), false).
+              getType());
+
+    // getString/StringRegion() aren't allowed for non string(-variant) types
+    EXPECT_THROW(token_eof.getString(), isc::InvalidOperation);
+    EXPECT_THROW(token_eof.getString(strval), isc::InvalidOperation);
+    EXPECT_THROW(token_num.getString(), isc::InvalidOperation);
+    EXPECT_THROW(token_num.getString(strval), isc::InvalidOperation);
+    EXPECT_THROW(token_eof.getStringRegion(), isc::InvalidOperation);
+    EXPECT_THROW(token_num.getStringRegion(), isc::InvalidOperation);
+}
+
+TEST_F(MasterLexerTokenTest, numbers) {
+    EXPECT_EQ(42, token_num.getNumber());
+    EXPECT_EQ(MasterToken::NUMBER, token_num.getType());
+
+    // It's copyable and assignable.
+    MasterToken token(token_num);
+    EXPECT_EQ(42, token.getNumber());
+    EXPECT_EQ(MasterToken::NUMBER, token.getType());
+
+    token = token_num;
+    EXPECT_EQ(42, token.getNumber());
+    EXPECT_EQ(MasterToken::NUMBER, token.getType());
+
+    // it's okay to replace it with a different type of token
+    token = token_eof;
+    EXPECT_EQ(MasterToken::END_OF_FILE, token.getType());
+
+    // Possible max value
+    token = MasterToken(0xffffffff);
+    EXPECT_EQ(4294967295u, token.getNumber());
+
+    // getNumber() isn't allowed for non number types
+    EXPECT_THROW(token_eof.getNumber(), isc::InvalidOperation);
+    EXPECT_THROW(token_str.getNumber(), isc::InvalidOperation);
+}
+
+TEST_F(MasterLexerTokenTest, novalues) {
+    // Just checking we can construct them and getType() returns correct value.
+    EXPECT_EQ(MasterToken::END_OF_FILE, token_eof.getType());
+    EXPECT_EQ(MasterToken::END_OF_LINE,
+              MasterToken(MasterToken::END_OF_LINE).getType());
+    EXPECT_EQ(MasterToken::INITIAL_WS,
+              MasterToken(MasterToken::INITIAL_WS).getType());
+
+    // Special types of tokens cannot have value-based types
+    EXPECT_THROW(MasterToken t(MasterToken::STRING), isc::InvalidParameter);
+    EXPECT_THROW(MasterToken t(MasterToken::QSTRING), isc::InvalidParameter);
+    EXPECT_THROW(MasterToken t(MasterToken::NUMBER), isc::InvalidParameter);
+    EXPECT_THROW(MasterToken t(MasterToken::ERROR), isc::InvalidParameter);
+}
+
+TEST_F(MasterLexerTokenTest, errors) {
+    EXPECT_EQ(MasterToken::ERROR, token_err.getType());
+    EXPECT_EQ(MasterToken::UNEXPECTED_END, token_err.getErrorCode());
+    EXPECT_EQ("unexpected end of input", token_err.getErrorText());
+    EXPECT_EQ("lexer not started", MasterToken(MasterToken::NOT_STARTED).
+              getErrorText());
+    EXPECT_EQ("unbalanced parentheses",
+              MasterToken(MasterToken::UNBALANCED_PAREN).
+              getErrorText());
+    EXPECT_EQ("unbalanced quotes", MasterToken(MasterToken::UNBALANCED_QUOTES).
+              getErrorText());
+    EXPECT_EQ("no token produced", MasterToken(MasterToken::NO_TOKEN_PRODUCED).
+              getErrorText());
+    EXPECT_EQ("number out of range",
+              MasterToken(MasterToken::NUMBER_OUT_OF_RANGE).
+              getErrorText());
+    EXPECT_EQ("not a valid number",
+              MasterToken(MasterToken::BAD_NUMBER).getErrorText());
+    EXPECT_EQ("unexpected quotes",
+              MasterToken(MasterToken::UNEXPECTED_QUOTES).getErrorText());
+
+    // getErrorCode/Text() isn't allowed for non number types
+    EXPECT_THROW(token_num.getErrorCode(), isc::InvalidOperation);
+    EXPECT_THROW(token_num.getErrorText(), isc::InvalidOperation);
+
+    // Only the pre-defined error code is accepted.  Hardcoding '8' (max code
+    // + 1) is intentional; it'd be actually better if we notice it when we
+    // update the enum list (which shouldn't happen too often).
+    //
+    // Note: if you fix this testcase, you probably want to update the
+    // getErrorText() tests above too.
+    EXPECT_THROW(MasterToken(MasterToken::ErrorCode(8)),
+                 isc::InvalidParameter);
+
+    // Check the coexistence of "from number" and "from error-code"
+    // constructors won't cause confusion.
+    EXPECT_EQ(MasterToken::NUMBER,
+              MasterToken(static_cast<uint32_t>(MasterToken::NOT_STARTED)).
+              getType());
+}
+}
diff --git a/src/lib/dns/tests/master_lexer_unittest.cc b/src/lib/dns/tests/master_lexer_unittest.cc
new file mode 100644
index 0000000..7bebb48
--- /dev/null
+++ b/src/lib/dns/tests/master_lexer_unittest.cc
@@ -0,0 +1,521 @@
+// Copyright (C) 2012-2020 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <exceptions/exceptions.h>
+
+#include <dns/master_lexer.h>
+#include <dns/master_lexer_state.h>
+
+#include <gtest/gtest.h>
+
+#include <boost/lexical_cast.hpp>
+#include <boost/scoped_ptr.hpp>
+
+#include <string>
+#include <sstream>
+
+using namespace isc::dns;
+using std::string;
+using std::stringstream;
+using boost::lexical_cast;
+using boost::scoped_ptr;
+using master_lexer_internal::State;
+
+namespace {
+
+class MasterLexerTest : public ::testing::Test {
+protected:
+    MasterLexerTest() :
+        expected_stream_name("stream-" + lexical_cast<string>(&ss))
+    {}
+
+    MasterLexer lexer;
+    stringstream ss;
+    const string expected_stream_name;
+};
+
+// Commonly used check case where the input sources stack is empty.
+void
+checkEmptySource(const MasterLexer& lexer) {
+    EXPECT_TRUE(lexer.getSourceName().empty());
+    EXPECT_EQ(0, lexer.getSourceLine());
+    EXPECT_EQ(0, lexer.getPosition());
+}
+
+TEST_F(MasterLexerTest, preOpen) {
+    // Initially sources stack is empty.
+    checkEmptySource(lexer);
+}
+
+TEST_F(MasterLexerTest, pushStream) {
+    EXPECT_EQ(0, lexer.getSourceCount());
+    ss << "test";
+    lexer.pushSource(ss);
+    EXPECT_EQ(expected_stream_name, lexer.getSourceName());
+    EXPECT_EQ(1, lexer.getSourceCount());
+    EXPECT_EQ(4, lexer.getTotalSourceSize()); // 4 = len("test")
+
+    // From the point of view of this test, we only have to check (though
+    // indirectly) getSourceLine calls InputSource::getCurrentLine.  It should
+    // return 1 initially.
+    EXPECT_EQ(1, lexer.getSourceLine());
+
+    // By popping it the stack will be empty again.
+    lexer.popSource();
+    EXPECT_EQ(0, lexer.getSourceCount());
+    checkEmptySource(lexer);
+    EXPECT_EQ(4, lexer.getTotalSourceSize()); // this shouldn't change
+}
+
+TEST_F(MasterLexerTest, pushStreamFail) {
+    // Pretend a "bad" thing happened in the stream.  This will make the
+    // initialization throw an exception.
+    ss << "test";
+    ss.setstate(std::ios_base::badbit);
+
+    EXPECT_THROW(lexer.pushSource(ss), isc::Unexpected);
+}
+
+TEST_F(MasterLexerTest, pushFile) {
+    // We use zone file (-like) data, but in this test that actually doesn't
+    // matter.
+    EXPECT_EQ(0, lexer.getSourceCount());
+    EXPECT_TRUE(lexer.pushSource(TEST_DATA_SRCDIR "/masterload.txt"));
+    EXPECT_EQ(1, lexer.getSourceCount());
+    EXPECT_EQ(TEST_DATA_SRCDIR "/masterload.txt", lexer.getSourceName());
+    EXPECT_EQ(1, lexer.getSourceLine());
+
+    // 143 = size of the test zone file.  hardcode it assuming it won't change
+    // too often.
+    EXPECT_EQ(143, lexer.getTotalSourceSize());
+
+    lexer.popSource();
+    checkEmptySource(lexer);
+    EXPECT_EQ(0, lexer.getSourceCount());
+    EXPECT_EQ(143, lexer.getTotalSourceSize()); // this shouldn't change
+
+    // If we give a non NULL string pointer, its content will be intact
+    // if pushSource succeeds.
+    std::string error_txt = "dummy";
+    EXPECT_TRUE(lexer.pushSource(TEST_DATA_SRCDIR "/masterload.txt",
+                                 &error_txt));
+    EXPECT_EQ("dummy", error_txt);
+}
+
+TEST_F(MasterLexerTest, pushBadFileName) {
+    EXPECT_THROW(lexer.pushSource(NULL), isc::InvalidParameter);
+}
+
+TEST_F(MasterLexerTest, pushFileFail) {
+    // The file to be pushed doesn't exist.  pushSource() fails and
+    // some non empty error string should be set.
+    std::string error_txt;
+    EXPECT_TRUE(error_txt.empty());
+    EXPECT_FALSE(lexer.pushSource("no-such-file", &error_txt));
+    EXPECT_FALSE(error_txt.empty());
+
+    // It's safe to pass NULL error_txt (either explicitly or implicitly as
+    // the default)
+    EXPECT_FALSE(lexer.pushSource("no-such-file", NULL));
+    EXPECT_FALSE(lexer.pushSource("no-such-file"));
+}
+
+TEST_F(MasterLexerTest, nestedPush) {
+    const string test_txt = "test";
+    ss << test_txt;
+    lexer.pushSource(ss);
+
+    EXPECT_EQ(test_txt.size(), lexer.getTotalSourceSize());
+    EXPECT_EQ(0, lexer.getPosition());
+
+    EXPECT_EQ(expected_stream_name, lexer.getSourceName());
+
+    // Read the string; getPosition() should reflect that.
+    EXPECT_EQ(MasterToken::STRING, lexer.getNextToken().getType());
+    EXPECT_EQ(test_txt.size(), lexer.getPosition());
+
+    // We can push another source without popping the previous one.
+    lexer.pushSource(TEST_DATA_SRCDIR "/masterload.txt");
+    EXPECT_EQ(TEST_DATA_SRCDIR "/masterload.txt", lexer.getSourceName());
+    EXPECT_EQ(143 + test_txt.size(),
+              lexer.getTotalSourceSize()); // see above for magic nums
+
+    // the next token should be the EOL (skipping a comment line), its
+    // position in the file is 35 (hardcoded).
+    EXPECT_EQ(MasterToken::END_OF_LINE, lexer.getNextToken().getType());
+    EXPECT_EQ(test_txt.size() + 35, lexer.getPosition());
+
+    // popSource() works on the "topmost" (last-pushed) source
+    lexer.popSource();
+    EXPECT_EQ(expected_stream_name, lexer.getSourceName());
+
+    // pop shouldn't change the total size and the current position
+    EXPECT_EQ(143 + test_txt.size(), lexer.getTotalSourceSize());
+    EXPECT_EQ(test_txt.size() + 35, lexer.getPosition());
+
+    lexer.popSource();
+    EXPECT_TRUE(lexer.getSourceName().empty());
+
+    // size and position still shouldn't change
+    EXPECT_EQ(143 + test_txt.size(), lexer.getTotalSourceSize());
+    EXPECT_EQ(test_txt.size() + 35, lexer.getPosition());
+}
+
+TEST_F(MasterLexerTest, unknownSourceSize) {
+    // Similar to the previous case, but the size of the second source
+    // will be considered "unknown" (by emulating an error).
+    ss << "test";
+    lexer.pushSource(ss);
+    EXPECT_EQ(4, lexer.getTotalSourceSize());
+
+    stringstream ss2;
+    ss2.setstate(std::ios_base::failbit); // this will make the size unknown
+    lexer.pushSource(ss2);
+    // Then the total size is also unknown.
+    EXPECT_EQ(MasterLexer::SOURCE_SIZE_UNKNOWN, lexer.getTotalSourceSize());
+
+    // Even if we pop that source, the size is still unknown.
+    lexer.popSource();
+    EXPECT_EQ(MasterLexer::SOURCE_SIZE_UNKNOWN, lexer.getTotalSourceSize());
+}
+
+TEST_F(MasterLexerTest, invalidPop) {
+    // popSource() cannot be called if the sources stack is empty.
+    EXPECT_THROW(lexer.popSource(), isc::InvalidOperation);
+}
+
+// Test it is not possible to get token when no source is available.
+TEST_F(MasterLexerTest, noSource) {
+    EXPECT_THROW(lexer.getNextToken(), isc::InvalidOperation);
+}
+
+// Test getting some tokens.  It also check basic behavior of getPosition().
+TEST_F(MasterLexerTest, getNextToken) {
+    ss << "\n   \n\"STRING\"\n";
+    lexer.pushSource(ss);
+
+    // First, the newline should get out.
+    EXPECT_EQ(MasterToken::END_OF_LINE, lexer.getNextToken().getType());
+    EXPECT_EQ(1, lexer.getPosition());
+    // Then the whitespace, if we specify the option.
+    EXPECT_EQ(MasterToken::INITIAL_WS,
+              lexer.getNextToken(MasterLexer::INITIAL_WS).getType());
+    EXPECT_EQ(2, lexer.getPosition());
+    // The newline
+    EXPECT_EQ(MasterToken::END_OF_LINE, lexer.getNextToken().getType());
+    EXPECT_EQ(5, lexer.getPosition()); // 1st \n + 3 spaces, then 2nd \n
+    // The (quoted) string
+    EXPECT_EQ(MasterToken::QSTRING,
+              lexer.getNextToken(MasterLexer::QSTRING).getType());
+    EXPECT_EQ(5 + 8, lexer.getPosition()); // 8 = len("STRING') + quotes
+
+    // And the end of line and file
+    EXPECT_EQ(MasterToken::END_OF_LINE, lexer.getNextToken().getType());
+    EXPECT_EQ(5 + 8 + 1, lexer.getPosition()); // previous + 3rd \n
+    EXPECT_EQ(MasterToken::END_OF_FILE, lexer.getNextToken().getType());
+    EXPECT_EQ(5 + 8 + 1, lexer.getPosition()); // position doesn't change
+}
+
+// Test we correctly find end of file.
+TEST_F(MasterLexerTest, eof) {
+    // Let the ss empty.
+    lexer.pushSource(ss);
+
+    // The first one is found to be EOF
+    EXPECT_EQ(MasterToken::END_OF_FILE, lexer.getNextToken().getType());
+    // And it stays on EOF for any following attempts
+    EXPECT_EQ(MasterToken::END_OF_FILE, lexer.getNextToken().getType());
+    // And we can step back one token, but that is the EOF too.
+    lexer.ungetToken();
+    EXPECT_EQ(MasterToken::END_OF_FILE, lexer.getNextToken().getType());
+}
+
+// Check we properly return error when there's an opened parentheses and no
+// closing one
+TEST_F(MasterLexerTest, getUnbalancedParen) {
+    ss << "(string";
+    lexer.pushSource(ss);
+
+    // The string gets out first
+    EXPECT_EQ(MasterToken::STRING, lexer.getNextToken().getType());
+    // Then an unbalanced parenthesis
+    EXPECT_EQ(MasterToken::UNBALANCED_PAREN,
+              lexer.getNextToken().getErrorCode());
+    // And then EOF
+    EXPECT_EQ(MasterToken::END_OF_FILE, lexer.getNextToken().getType());
+}
+
+// Check we properly return error when there's an opened quoted string and no
+// closing one
+TEST_F(MasterLexerTest, getUnbalancedString) {
+    ss << "\"string";
+    lexer.pushSource(ss);
+
+    // Then an unbalanced qstring (reported as an unexpected end)
+    EXPECT_EQ(MasterToken::UNEXPECTED_END,
+              lexer.getNextToken(MasterLexer::QSTRING).getErrorCode());
+    // And then EOF
+    EXPECT_EQ(MasterToken::END_OF_FILE, lexer.getNextToken().getType());
+}
+
+// Test ungetting tokens works.  Also check getPosition() is adjusted
+TEST_F(MasterLexerTest, ungetToken) {
+    ss << "\n (\"string\"\n) more";
+    lexer.pushSource(ss);
+
+    // Try getting the newline
+    EXPECT_EQ(MasterToken::END_OF_LINE, lexer.getNextToken().getType());
+    EXPECT_EQ(1, lexer.getPosition());
+    // Return it and get again
+    lexer.ungetToken();
+    EXPECT_EQ(0, lexer.getPosition());
+    EXPECT_EQ(MasterToken::END_OF_LINE, lexer.getNextToken().getType());
+    EXPECT_EQ(1, lexer.getPosition());
+    // Get the string and return it back
+    EXPECT_EQ(MasterToken::QSTRING,
+              lexer.getNextToken(MasterLexer::QSTRING).getType());
+    EXPECT_EQ(string("\n (\"string\"").size(), lexer.getPosition());
+    lexer.ungetToken();
+    EXPECT_EQ(1, lexer.getPosition()); // back to just after 1st \n
+    // But if we change the options, it honors them
+    EXPECT_EQ(MasterToken::INITIAL_WS,
+              lexer.getNextToken(MasterLexer::QSTRING |
+                                 MasterLexer::INITIAL_WS).getType());
+    // Get to the "more" string
+    EXPECT_EQ(MasterToken::QSTRING,
+              lexer.getNextToken(MasterLexer::QSTRING).getType());
+    EXPECT_EQ(MasterToken::STRING,
+              lexer.getNextToken(MasterLexer::QSTRING).getType());
+    // Return it back. It should get inside the parentheses.
+    // Upon next attempt to get it again, the newline inside the parentheses
+    // should be still ignored.
+    lexer.ungetToken();
+    EXPECT_EQ(MasterToken::STRING,
+              lexer.getNextToken(MasterLexer::QSTRING).getType());
+}
+
+// Check ungetting token without overriding the start method. We also
+// check it works well with changing options between the calls.
+TEST_F(MasterLexerTest, ungetRealOptions) {
+    ss << "    \n";
+    lexer.pushSource(ss);
+
+    // If we call it the usual way, it skips up to the newline and returns
+    // it
+    EXPECT_EQ(MasterToken::END_OF_LINE, lexer.getNextToken().getType());
+
+    // Now we return it. If we call it again, but with different options,
+    // we get the initial whitespace.
+    lexer.ungetToken();
+    EXPECT_EQ(MasterToken::INITIAL_WS,
+              lexer.getNextToken(MasterLexer::INITIAL_WS).getType());
+}
+
+// Check the initial whitespace is found even in the first line of included
+// file.  It also confirms getPosition() works for multiple sources, each
+// of which is partially parsed.
+TEST_F(MasterLexerTest, includeAndInitialWS) {
+    ss << "    \n";
+    lexer.pushSource(ss);
+
+    stringstream ss2;
+    ss2 << "    \n";
+
+    EXPECT_EQ(MasterToken::INITIAL_WS,
+              lexer.getNextToken(MasterLexer::INITIAL_WS).getType());
+    EXPECT_EQ(1, lexer.getPosition());
+    lexer.pushSource(ss2);
+    EXPECT_EQ(MasterToken::INITIAL_WS,
+              lexer.getNextToken(MasterLexer::INITIAL_WS).getType());
+    EXPECT_EQ(2, lexer.getPosition()); // should be sum of pushed positions.
+}
+
+// Test only one token can be ungotten
+TEST_F(MasterLexerTest, ungetTwice) {
+    ss << "\n";
+    lexer.pushSource(ss);
+
+    EXPECT_EQ(MasterToken::END_OF_LINE, lexer.getNextToken().getType());
+    // Unget the token. It can be done once
+    lexer.ungetToken();
+    // But not twice
+    EXPECT_THROW(lexer.ungetToken(), isc::InvalidOperation);
+}
+
+// Test we can't unget a token before we get one
+TEST_F(MasterLexerTest, ungetBeforeGet) {
+    lexer.pushSource(ss); // Just to eliminate the missing source problem
+    EXPECT_THROW(lexer.ungetToken(), isc::InvalidOperation);
+}
+
+// Test we can't unget a token after a source switch, even when we got
+// something before.
+TEST_F(MasterLexerTest, ungetAfterSwitch) {
+    ss << "\n\n";
+    lexer.pushSource(ss);
+    EXPECT_EQ(MasterToken::END_OF_LINE, lexer.getNextToken().getType());
+    // Switch the source
+    std::stringstream ss2;
+    ss2 << "\n\n";
+    lexer.pushSource(ss2);
+    EXPECT_THROW(lexer.ungetToken(), isc::InvalidOperation);
+    // We can get from the new source
+    EXPECT_EQ(MasterToken::END_OF_LINE, lexer.getNextToken().getType());
+    // And when we drop the current source, we can't unget again
+    lexer.popSource();
+    EXPECT_THROW(lexer.ungetToken(), isc::InvalidOperation);
+}
+
+// Common checks for the case when getNextToken() should result in LexerError
+void
+lexerErrorCheck(MasterLexer& lexer, MasterToken::Type expect,
+                MasterToken::ErrorCode expected_error)
+{
+    bool thrown = false;
+    try {
+        lexer.getNextToken(expect);
+    } catch (const MasterLexer::LexerError& error) {
+        EXPECT_EQ(expected_error, error.token_.getErrorCode());
+        thrown = true;
+    }
+    EXPECT_TRUE(thrown);
+}
+
+// Common checks regarding expected/unexpected end-of-line
+//
+// The 'lexer' should be at a position before two consecutive '\n's.
+// The first one will be recognized, and the second one will be considered an
+// unexpected token.  Then this helper consumes the second '\n', so the caller
+// can continue the test after these '\n's.
+void
+eolCheck(MasterLexer& lexer, MasterToken::Type expect) {
+    // If EOL is found and eol_ok is true, we get it.
+    EXPECT_EQ(MasterToken::END_OF_LINE,
+              lexer.getNextToken(expect, true).getType());
+    // We'll see the second '\n'; by default it will fail.
+    EXPECT_THROW(lexer.getNextToken(expect), MasterLexer::LexerError);
+    // Same if eol_ok is explicitly set to false.  This also checks the
+    // offending '\n' was "ungotten".
+    EXPECT_THROW(lexer.getNextToken(expect, false), MasterLexer::LexerError);
+
+    // And also check the error token set in the exception object.
+    lexerErrorCheck(lexer, expect, MasterToken::UNEXPECTED_END);
+
+    // Then skip the 2nd '\n'
+    EXPECT_EQ(MasterToken::END_OF_LINE, lexer.getNextToken().getType());
+}
+
+// Common checks regarding expected/unexpected end-of-file
+//
+// The 'lexer' should be at a position just before an end-of-file.
+void
+eofCheck(MasterLexer& lexer, MasterToken::Type expect) {
+    EXPECT_EQ(MasterToken::END_OF_FILE,
+              lexer.getNextToken(expect, true).getType());
+    EXPECT_THROW(lexer.getNextToken(expect), MasterLexer::LexerError);
+    EXPECT_THROW(lexer.getNextToken(expect, false), MasterLexer::LexerError);
+}
+
+TEST_F(MasterLexerTest, getNextTokenString) {
+    ss << "normal-string\n";
+    ss << "\n";
+    ss << "another-string";
+    lexer.pushSource(ss);
+
+    // Normal successful case: Expecting a string and get one.
+    EXPECT_EQ("normal-string",
+              lexer.getNextToken(MasterToken::STRING).getString());
+    eolCheck(lexer, MasterToken::STRING);
+
+    // Same set of tests but for end-of-file
+    EXPECT_EQ("another-string",
+              lexer.getNextToken(MasterToken::STRING, true).getString());
+    eofCheck(lexer, MasterToken::STRING);
+}
+
+TEST_F(MasterLexerTest, getNextTokenQString) {
+    ss << "\"quoted-string\"\n";
+    ss << "\n";
+    ss << "normal-string";
+    lexer.pushSource(ss);
+
+    // Expecting a quoted string and get one.
+    EXPECT_EQ("quoted-string",
+              lexer.getNextToken(MasterToken::QSTRING).getString());
+    eolCheck(lexer, MasterToken::QSTRING);
+
+    // Expecting a quoted string but see a normal string.  It's okay.
+    EXPECT_EQ("normal-string",
+              lexer.getNextToken(MasterToken::QSTRING).getString());
+    eofCheck(lexer, MasterToken::QSTRING);
+}
+
+TEST_F(MasterLexerTest, getNextTokenNumber) {
+    ss << "3600\n";
+    ss << "\n";
+    ss << "4294967296 ";        // =2^32, out of range
+    ss << "not-a-number ";
+    ss << "123abc "; // starting with digits, but resulting in a string
+    ss << "86400";
+    lexer.pushSource(ss);
+
+    // Expecting a number string and get one.
+    EXPECT_EQ(3600,
+              lexer.getNextToken(MasterToken::NUMBER).getNumber());
+    eolCheck(lexer, MasterToken::NUMBER);
+
+    // Expecting a number, but it's too big for uint32.
+    lexerErrorCheck(lexer, MasterToken::NUMBER,
+                    MasterToken::NUMBER_OUT_OF_RANGE);
+    // The token should have been "ungotten".  Re-read and skip it.
+    EXPECT_EQ(MasterToken::STRING, lexer.getNextToken().getType());
+
+    // Expecting a number, but see a string.
+    lexerErrorCheck(lexer, MasterToken::NUMBER, MasterToken::BAD_NUMBER);
+    // The unexpected string should have been "ungotten".  Re-read and skip it.
+    EXPECT_EQ(MasterToken::STRING, lexer.getNextToken().getType());
+
+    // Expecting a number, but see a string.
+    lexerErrorCheck(lexer, MasterToken::NUMBER, MasterToken::BAD_NUMBER);
+    // The unexpected string should have been "ungotten".  Re-read and skip it.
+    EXPECT_EQ(MasterToken::STRING, lexer.getNextToken().getType());
+
+    // Unless we specify NUMBER, decimal number string should be recognized
+    // as a string.
+    EXPECT_EQ("86400",
+              lexer.getNextToken(MasterToken::STRING).getString());
+    eofCheck(lexer, MasterToken::NUMBER);
+}
+
+TEST_F(MasterLexerTest, getNextTokenErrors) {
+    // Check miscellaneous error cases
+
+    ss << ") ";                 // unbalanced parenthesis
+    ss << "string-after-error ";
+    lexer.pushSource(ss);
+
+    // Only string/qstring/number can be "expected".
+    EXPECT_THROW(lexer.getNextToken(MasterToken::END_OF_LINE),
+                 isc::InvalidParameter);
+    EXPECT_THROW(lexer.getNextToken(MasterToken::END_OF_FILE),
+                 isc::InvalidParameter);
+    EXPECT_THROW(lexer.getNextToken(MasterToken::INITIAL_WS),
+                 isc::InvalidParameter);
+    EXPECT_THROW(lexer.getNextToken(MasterToken::ERROR),
+                 isc::InvalidParameter);
+
+    // If it encounters a syntax error, it results in LexerError exception.
+    lexerErrorCheck(lexer, MasterToken::STRING, MasterToken::UNBALANCED_PAREN);
+
+    // Unlike the NUMBER_OUT_OF_RANGE case, the error part has been skipped
+    // within getNextToken().  We should be able to get the next token.
+    EXPECT_EQ("string-after-error",
+              lexer.getNextToken(MasterToken::STRING).getString());
+}
+
+}
diff --git a/src/lib/dns/tests/master_loader_callbacks_test.cc b/src/lib/dns/tests/master_loader_callbacks_test.cc
new file mode 100644
index 0000000..9d23802
--- /dev/null
+++ b/src/lib/dns/tests/master_loader_callbacks_test.cc
@@ -0,0 +1,79 @@
+// Copyright (C) 2012-2020 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <dns/master_loader_callbacks.h>
+#include <dns/rrset.h>
+#include <dns/name.h>
+#include <dns/rrttl.h>
+#include <dns/rrclass.h>
+
+#include <exceptions/exceptions.h>
+
+#include <gtest/gtest.h>
+#include <functional>
+
+namespace {
+
+using std::string;
+using namespace isc::dns;
+namespace ph = std::placeholders;
+
+class MasterLoaderCallbacksTest : public ::testing::Test {
+protected:
+    MasterLoaderCallbacksTest() :
+        last_was_error_(false), // Not needed, but then cppcheck complains
+        issue_called_(false),
+        rrset_(new RRset(Name("example.org"), RRClass::IN(), RRType::A(),
+                         RRTTL(3600))),
+        error_(std::bind(&MasterLoaderCallbacksTest::checkCallback, this,
+                         true, ph::_1, ph::_2, ph::_3)),
+        warning_(std::bind(&MasterLoaderCallbacksTest::checkCallback, this,
+                           false, ph::_1, ph::_2, ph::_3)),
+        callbacks_(error_, warning_)
+    {}
+
+    void checkCallback(bool error, const string& source, size_t line,
+                       const string& reason)
+    {
+        issue_called_ = true;
+        last_was_error_ = error;
+        EXPECT_EQ("source", source);
+        EXPECT_EQ(1, line);
+        EXPECT_EQ("reason", reason);
+    }
+    bool last_was_error_;
+    bool issue_called_;
+    const RRsetPtr rrset_;
+    const MasterLoaderCallbacks::IssueCallback error_, warning_;
+    MasterLoaderCallbacks callbacks_;
+};
+
+// Check the constructor rejects empty callbacks, but accepts non-empty ones
+TEST_F(MasterLoaderCallbacksTest, constructor) {
+    EXPECT_THROW(MasterLoaderCallbacks(MasterLoaderCallbacks::IssueCallback(),
+                                       warning_), isc::InvalidParameter);
+    EXPECT_THROW(MasterLoaderCallbacks(error_,
+                                       MasterLoaderCallbacks::IssueCallback()),
+                 isc::InvalidParameter);
+    EXPECT_NO_THROW(MasterLoaderCallbacks(error_, warning_));
+}
+
+// Call the issue callbacks
+TEST_F(MasterLoaderCallbacksTest, issueCall) {
+    callbacks_.error("source", 1, "reason");
+    EXPECT_TRUE(last_was_error_);
+    EXPECT_TRUE(issue_called_);
+
+    issue_called_ = false;
+
+    callbacks_.warning("source", 1, "reason");
+    EXPECT_FALSE(last_was_error_);
+    EXPECT_TRUE(issue_called_);
+}
+
+}
diff --git a/src/lib/dns/tests/master_loader_unittest.cc b/src/lib/dns/tests/master_loader_unittest.cc
new file mode 100644
index 0000000..74300d3
--- /dev/null
+++ b/src/lib/dns/tests/master_loader_unittest.cc
@@ -0,0 +1,1445 @@
+// Copyright (C) 2012-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <dns/master_loader_callbacks.h>
+#include <dns/master_loader.h>
+#include <dns/rrtype.h>
+#include <dns/rrset.h>
+#include <dns/rrclass.h>
+#include <dns/rrttl.h>
+#include <dns/name.h>
+#include <dns/rdata.h>
+
+#include <gtest/gtest.h>
+
+#include <boost/lexical_cast.hpp>
+#include <boost/scoped_ptr.hpp>
+
+#include <functional>
+#include <string>
+#include <vector>
+#include <list>
+#include <sstream>
+
+using namespace isc::dns;
+using std::vector;
+using std::string;
+using std::list;
+using std::stringstream;
+using std::endl;
+using boost::lexical_cast;
+namespace ph = std::placeholders;
+
+namespace {
+class MasterLoaderTest : public ::testing::Test {
+public:
+    MasterLoaderTest() :
+        callbacks_(std::bind(&MasterLoaderTest::callback, this,
+                             &errors_, ph::_1, ph::_2, ph::_3),
+                   std::bind(&MasterLoaderTest::callback, this,
+                             &warnings_, ph::_1, ph::_2, ph::_3))
+    {}
+
+    void TearDown() {
+        // Check there are no more RRs we didn't expect
+        EXPECT_TRUE(rrsets_.empty());
+    }
+
+    /// Concatenate file, line, and reason, and add it to either errors
+    /// or warnings
+    void callback(vector<string>* target, const std::string& file, size_t line,
+                  const std::string& reason)
+    {
+        std::stringstream ss;
+        ss << reason << " [" << file << ":" << line << "]";
+        target->push_back(ss.str());
+    }
+
+    void addRRset(const Name& name, const RRClass& rrclass,
+                  const RRType& rrtype, const RRTTL& rrttl,
+                  const rdata::RdataPtr& data) {
+        const RRsetPtr rrset(new BasicRRset(name, rrclass, rrtype, rrttl));
+        rrset->addRdata(data);
+        rrsets_.push_back(rrset);
+    }
+
+    void setLoader(const char* file, const Name& origin,
+                   const RRClass& rrclass, const MasterLoader::Options options)
+    {
+        loader_.reset(new MasterLoader(file, origin, rrclass, callbacks_,
+                                       std::bind(&MasterLoaderTest::addRRset,
+                                                 this, ph::_1, ph::_2, ph::_3,
+                                                 ph::_4, ph::_5),
+                                       options));
+    }
+
+    void setLoader(std::istream& stream, const Name& origin,
+                   const RRClass& rrclass, const MasterLoader::Options options)
+    {
+        loader_.reset(new MasterLoader(stream, origin, rrclass, callbacks_,
+                                       std::bind(&MasterLoaderTest::addRRset,
+                                                 this, ph::_1, ph::_2, ph::_3,
+                                                 ph::_4, ph::_5),
+                                       options));
+    }
+
+    static string prepareZone(const string& line, bool include_last) {
+        string result;
+        result += "example.org. 3600 IN SOA ns1.example.org. "
+            "admin.example.org. 1234 3600 1800 2419200 7200\n";
+        result += line;
+        if (include_last) {
+            result += "\n";
+            result += "correct 3600    IN  A 192.0.2.2\n";
+        }
+        return (result);
+    }
+
+    void clear() {
+        warnings_.clear();
+        errors_.clear();
+        rrsets_.clear();
+    }
+
+    // Check the next RR in the ones produced by the loader
+    // Other than passed arguments are checked to be the default for the tests
+    void checkRR(const string& name, const RRType& type, const string& data,
+                 const RRTTL& rrttl = RRTTL(3600)) {
+        ASSERT_FALSE(rrsets_.empty());
+        RRsetPtr current = rrsets_.front();
+        rrsets_.pop_front();
+
+        EXPECT_EQ(Name(name), current->getName());
+        EXPECT_EQ(type, current->getType());
+        EXPECT_EQ(RRClass::IN(), current->getClass());
+        EXPECT_EQ(rrttl, current->getTTL());
+        ASSERT_EQ(1, current->getRdataCount());
+        EXPECT_EQ(0, isc::dns::rdata::createRdata(type, RRClass::IN(), data)->
+                  compare(current->getRdataIterator()->getCurrent()))
+            << data << " vs. "
+            << current->getRdataIterator()->getCurrent().toText();
+    }
+
+    void checkBasicRRs() {
+        checkRR("example.org", RRType::SOA(),
+                "ns1.example.org. admin.example.org. "
+                "1234 3600 1800 2419200 7200");
+        checkRR("example.org", RRType::NS(), "ns1.example.org.");
+        checkRR("www.example.org", RRType::A(), "192.0.2.1");
+        checkRR("www.example.org", RRType::AAAA(), "2001:db8::1");
+    }
+
+    void checkARR(const string& name) {
+        checkRR(name, RRType::A(), "192.0.2.1");
+    }
+
+    MasterLoaderCallbacks callbacks_;
+    boost::scoped_ptr<MasterLoader> loader_;
+    vector<string> errors_;
+    vector<string> warnings_;
+    list<RRsetPtr> rrsets_;
+};
+
+// Test simple loading. The zone file contains no tricky things, and nothing is
+// omitted. No RRset contains more than one RR Also no errors or warnings.
+TEST_F(MasterLoaderTest, basicLoad) {
+    setLoader(TEST_DATA_SRCDIR "/example.org", Name("example.org."),
+              RRClass::IN(), MasterLoader::MANY_ERRORS);
+
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+
+    // The following three should be set to 0 initially in case the loader
+    // is constructed from a file name.
+    EXPECT_EQ(0, loader_->getSize());
+    EXPECT_EQ(0, loader_->getPosition());
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+
+    EXPECT_TRUE(errors_.empty());
+    EXPECT_TRUE(warnings_.empty());
+
+    // Hardcode expected values taken from the test data file, assuming it
+    // won't change too often.
+    EXPECT_EQ(550, loader_->getSize());
+    EXPECT_EQ(550, loader_->getPosition());
+
+    checkBasicRRs();
+}
+
+// Test the $INCLUDE directive
+TEST_F(MasterLoaderTest, include) {
+    // Test various cases of include
+    const char* includes[] = {
+        "$include",
+        "$INCLUDE",
+        "$Include",
+        "$InCluDe",
+        "\"$INCLUDE\"",
+        NULL
+    };
+    for (const char** include = includes; *include != NULL; ++include) {
+        SCOPED_TRACE(*include);
+
+        clear();
+        // Prepare input source that has the include and some more data
+        // below (to see it returns back to the original source).
+        const string include_str = string(*include) + " " +
+            TEST_DATA_SRCDIR + "/example.org\nwww 3600 IN AAAA 2001:db8::1\n";
+        stringstream ss(include_str);
+        setLoader(ss, Name("example.org."), RRClass::IN(),
+                  MasterLoader::MANY_ERRORS);
+
+        loader_->load();
+        EXPECT_TRUE(loader_->loadedSuccessfully());
+        EXPECT_TRUE(errors_.empty());
+        EXPECT_TRUE(warnings_.empty());
+
+        checkBasicRRs();
+        checkRR("www.example.org", RRType::AAAA(), "2001:db8::1");
+    }
+}
+
+TEST_F(MasterLoaderTest, includeAndIncremental) {
+    // Check getSize() and getPosition() are adjusted before and after
+    // $INCLUDE.
+    const string first_rr = "before.example.org. 0 A 192.0.2.1\n";
+    const string include_str = "$INCLUDE " TEST_DATA_SRCDIR "/example.org";
+    const string zone_data = first_rr + include_str + "\n" +
+        "www 3600 IN AAAA 2001:db8::1\n";
+    stringstream ss(zone_data);
+    setLoader(ss, Name("example.org."), RRClass::IN(), MasterLoader::DEFAULT);
+
+    // On construction, getSize() returns the size of the data (exclude the
+    // the file to be included); position is set to 0.
+    EXPECT_EQ(zone_data.size(), loader_->getSize());
+    EXPECT_EQ(0, loader_->getPosition());
+
+    // Read the first RR.  getSize() doesn't change; position should be
+    // at the end of the first line.
+    loader_->loadIncremental(1);
+    EXPECT_EQ(zone_data.size(), loader_->getSize());
+    EXPECT_EQ(first_rr.size(), loader_->getPosition());
+
+    // Read next 4.  It includes $INCLUDE processing.  Magic number of 550
+    // is the size of the test zone file (see above); 507 is the position in
+    // the file at the end of 4th RR (due to extra comments it's smaller than
+    // the file size).
+    loader_->loadIncremental(4);
+    EXPECT_EQ(zone_data.size() + 550, loader_->getSize());
+    EXPECT_EQ(first_rr.size() + include_str.size() + 507,
+              loader_->getPosition());
+
+    // Read the last one.  At this point getSize and getPosition return
+    // the same value, indicating progress of 100%.
+    loader_->loadIncremental(1);
+    EXPECT_EQ(zone_data.size() + 550, loader_->getSize());
+    EXPECT_EQ(zone_data.size() + 550, loader_->getPosition());
+
+    // we were not interested in checking RRs in this test.  clear them to
+    // not confuse TearDown().
+    rrsets_.clear();
+}
+
+// A commonly used helper to check callback message.
+void
+checkCallbackMessage(const string& actual_msg, const string& expected_msg,
+                     size_t expected_line) {
+    // The actual message should begin with the expected message.
+    EXPECT_EQ(0, actual_msg.find(expected_msg)) << "actual message: " <<
+                                                actual_msg << " expected: " <<
+                                                expected_msg;
+
+    // and it should end with "...:<line_num>]"
+    const string line_desc = ":" + lexical_cast<string>(expected_line) + "]";
+    EXPECT_EQ(actual_msg.size() - line_desc.size(),
+              actual_msg.find(line_desc)) << "Expected on line " <<
+        expected_line;
+}
+
+TEST_F(MasterLoaderTest, origin) {
+    // Various forms of the directive
+    const char* origins[] = {
+        "$origin",
+        "$ORIGIN",
+        "$Origin",
+        "$OrigiN",
+        "\"$ORIGIN\"",
+        NULL
+    };
+    for (const char** origin = origins; *origin != NULL; ++origin) {
+        SCOPED_TRACE(*origin);
+
+        clear();
+        const string directive = *origin;
+        const string input =
+            "@  1H  IN  A   192.0.2.1\n" +
+            directive + " sub.example.org.\n"
+            "\"www\"    1H  IN  A   192.0.2.1\n" +
+            // Relative name in the origin
+            directive + " relative\n"
+            "@  1H  IN  A   192.0.2.1\n"
+            // Origin is _not_ used here (absolute name)
+            "noorigin.example.org.  60M IN  A   192.0.2.1\n";
+        stringstream ss(input);
+        setLoader(ss, Name("example.org."), RRClass::IN(),
+                  MasterLoader::MANY_ERRORS);
+
+        loader_->load();
+        EXPECT_TRUE(loader_->loadedSuccessfully());
+        EXPECT_TRUE(errors_.empty());
+        // There's a relative origin in it, we warn about that.
+        EXPECT_EQ(1, warnings_.size());
+        checkCallbackMessage(warnings_.at(0),
+                             "The new origin is relative, did you really mean "
+                             "relative.sub.example.org.?", 4);
+
+        checkARR("example.org");
+        checkARR("www.sub.example.org");
+        checkARR("relative.sub.example.org");
+        checkARR("noorigin.example.org");
+    }
+}
+
+TEST_F(MasterLoaderTest, generate) {
+    // Various forms of the directive
+    const char* generates[] = {
+        "$generate",
+        "$GENERATE",
+        "$Generate",
+        "$GeneratE",
+        "\"$GENERATE\"",
+        NULL
+    };
+    for (const char** generate = generates; *generate != NULL; ++generate) {
+        SCOPED_TRACE(*generate);
+
+        clear();
+        const string directive = *generate;
+        const string input =
+          "$ORIGIN example.org.\n"
+          "before.example.org. 3600 IN A 192.0.2.0\n" +
+          directive + " 3-5 host$ A 192.0.2.$\n" +
+          "after.example.org. 3600 IN A 192.0.2.255\n";
+        stringstream ss(input);
+        setLoader(ss, Name("example.org."), RRClass::IN(),
+                  MasterLoader::MANY_ERRORS);
+
+        loader_->load();
+        EXPECT_TRUE(loader_->loadedSuccessfully());
+        EXPECT_TRUE(errors_.empty());
+
+        // The "before" and "after" scaffolding below checks that no
+        // extra records are added by $GENERATE outside the requested
+        // range.
+        checkRR("before.example.org", RRType::A(), "192.0.2.0");
+        checkRR("host3.example.org", RRType::A(), "192.0.2.3");
+        checkRR("host4.example.org", RRType::A(), "192.0.2.4");
+        checkRR("host5.example.org", RRType::A(), "192.0.2.5");
+        checkRR("after.example.org", RRType::A(), "192.0.2.255");
+    }
+}
+
+TEST_F(MasterLoaderTest, generateRelativeLHS) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE 1-2 @ 3600 NS ns$.example.org.\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+
+    checkRR("example.org", RRType::NS(), "ns1.example.org.");
+    checkRR("example.org", RRType::NS(), "ns2.example.org.");
+}
+
+TEST_F(MasterLoaderTest, generateInFront) {
+    // $ is in the front
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE 9-10 $host 3600 TXT \"$ pomegranate\"\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+
+    checkRR("9host.example.org", RRType::TXT(), "9 pomegranate");
+    checkRR("10host.example.org", RRType::TXT(), "10 pomegranate");
+}
+
+TEST_F(MasterLoaderTest, generateInMiddle) {
+    // $ is in the middle
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE 9-10 num$-host 3600 TXT \"This is $ pomegranate\"\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+
+    checkRR("num9-host.example.org", RRType::TXT(), "This is 9 pomegranate");
+    checkRR("num10-host.example.org", RRType::TXT(), "This is 10 pomegranate");
+}
+
+TEST_F(MasterLoaderTest, generateAtEnd) {
+    // $ is at the end
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE 9-10 num$-host 3600 TXT Pomegranate$\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+
+    checkRR("num9-host.example.org", RRType::TXT(), "Pomegranate9");
+    checkRR("num10-host.example.org", RRType::TXT(), "Pomegranate10");
+}
+
+TEST_F(MasterLoaderTest, generateStripsQuotes) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE 1-2 @ 3600 MX \"$ mx$.example.org.\"\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+
+    checkRR("example.org", RRType::MX(), "1 mx1.example.org.");
+    checkRR("example.org", RRType::MX(), "2 mx2.example.org.");
+}
+
+TEST_F(MasterLoaderTest, generateWithDoublePlaceholder) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE 9-10 host$ 3600 TXT \"This is $$ pomegranate\"\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+
+    checkRR("host9.example.org", RRType::TXT(), "This is $ pomegranate");
+    checkRR("host10.example.org", RRType::TXT(), "This is $ pomegranate");
+}
+
+TEST_F(MasterLoaderTest, generateWithEscape) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE 9-10 host$ 3600 TXT \"This is \\$\\pomegranate\"\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+
+    checkRR("host9.example.org", RRType::TXT(), "This is \\$\\pomegranate");
+    checkRR("host10.example.org", RRType::TXT(), "This is \\$\\pomegranate");
+}
+
+TEST_F(MasterLoaderTest, generateWithParams) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$TTL 3600\n"
+        "$GENERATE 2-3 host$ A 192.0.2.$\n"
+        "$GENERATE 5-6 host$ 3600 A 192.0.2.$\n"
+        "$GENERATE 8-9 host$ IN A 192.0.2.$\n"
+        "$GENERATE 11-12 host$ IN 3600 A 192.0.2.$\n"
+        "$GENERATE 14-15 host$ 3600 IN A 192.0.2.$\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+
+    checkRR("host2.example.org", RRType::A(), "192.0.2.2");
+    checkRR("host3.example.org", RRType::A(), "192.0.2.3");
+
+    checkRR("host5.example.org", RRType::A(), "192.0.2.5");
+    checkRR("host6.example.org", RRType::A(), "192.0.2.6");
+
+    checkRR("host8.example.org", RRType::A(), "192.0.2.8");
+    checkRR("host9.example.org", RRType::A(), "192.0.2.9");
+
+    checkRR("host11.example.org", RRType::A(), "192.0.2.11");
+    checkRR("host12.example.org", RRType::A(), "192.0.2.12");
+
+    checkRR("host14.example.org", RRType::A(), "192.0.2.14");
+    checkRR("host15.example.org", RRType::A(), "192.0.2.15");
+}
+
+TEST_F(MasterLoaderTest, generateWithStep) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE 2-9/2 host$ 3600 A 192.0.2.$\n"
+        "$GENERATE 12-21/3 host$ 3600 A 192.0.2.$\n"
+        "$GENERATE 30-31/1 host$ 3600 A 192.0.2.$\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+
+    checkRR("host2.example.org", RRType::A(), "192.0.2.2");
+    checkRR("host4.example.org", RRType::A(), "192.0.2.4");
+    checkRR("host6.example.org", RRType::A(), "192.0.2.6");
+    checkRR("host8.example.org", RRType::A(), "192.0.2.8");
+
+    checkRR("host12.example.org", RRType::A(), "192.0.2.12");
+    checkRR("host15.example.org", RRType::A(), "192.0.2.15");
+    checkRR("host18.example.org", RRType::A(), "192.0.2.18");
+    checkRR("host21.example.org", RRType::A(), "192.0.2.21");
+
+    checkRR("host30.example.org", RRType::A(), "192.0.2.30");
+    checkRR("host31.example.org", RRType::A(), "192.0.2.31");
+}
+
+TEST_F(MasterLoaderTest, generateWithModifiers) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$TTL 3600\n"
+
+        // Use a positive delta of 1 in the LHS and a negative delta of
+        // -1 in the RHS
+        "$GENERATE 2-9/2 host${1} A 192.0.2.${-1}\n"
+
+        "$GENERATE 10-12 host${0,4} A 192.0.2.$\n"
+        "$GENERATE 14-15 host${0,4,d} A 192.0.2.$\n"
+
+        // Names are case-insensitive, so we use TXT's RDATA to check
+        // case with hex representation.
+        "$GENERATE 30-31 host$ TXT \"Value ${0,4,x}\"\n"
+        "$GENERATE 42-43 host$ TXT \"Value ${0,4,X}\"\n"
+
+        // Octal does not use any alphabets
+        "$GENERATE 45-46 host${0,4,o} A 192.0.2.$\n"
+
+        // Here, the LHS has a trailing dot (which would result in an
+        // out-of-zone name), but that should be handled as a relative
+        // name.
+        "$GENERATE 90-92 ${0,8,n} A 192.0.2.$\n"
+
+        // Here, the LHS has no trailing dot, and results in the same
+        // number of labels as width=8 above.
+        "$GENERATE 94-96 ${0,7,n} A 192.0.2.$\n"
+
+        // Names are case-insensitive, so we use TXT's RDATA to check
+        // case with nibble representation.
+        "$GENERATE 106-107 host$ TXT \"Value ${0,9,n}\"\n"
+        "$GENERATE 109-110 host$ TXT \"Value ${0,9,N}\"\n"
+
+        // Junk type will not parse and 'd' is assumed. No error is
+        // generated (this is to match BIND 9 behavior).
+        "$GENERATE 200-201 host${0,4,j} A 192.0.2.$\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+
+    checkRR("host3.example.org", RRType::A(), "192.0.2.1");
+    checkRR("host5.example.org", RRType::A(), "192.0.2.3");
+    checkRR("host7.example.org", RRType::A(), "192.0.2.5");
+    checkRR("host9.example.org", RRType::A(), "192.0.2.7");
+
+    checkRR("host0010.example.org", RRType::A(), "192.0.2.10");
+    checkRR("host0011.example.org", RRType::A(), "192.0.2.11");
+    checkRR("host0012.example.org", RRType::A(), "192.0.2.12");
+
+    checkRR("host0014.example.org", RRType::A(), "192.0.2.14");
+    checkRR("host0015.example.org", RRType::A(), "192.0.2.15");
+
+    checkRR("host30.example.org", RRType::TXT(), "Value 001e");
+    checkRR("host31.example.org", RRType::TXT(), "Value 001f");
+
+    checkRR("host42.example.org", RRType::TXT(), "Value 002A");
+    checkRR("host43.example.org", RRType::TXT(), "Value 002B");
+
+    checkRR("host0055.example.org", RRType::A(), "192.0.2.45");
+    checkRR("host0056.example.org", RRType::A(), "192.0.2.46");
+
+    checkRR("a.5.0.0.example.org", RRType::A(), "192.0.2.90");
+    checkRR("b.5.0.0.example.org", RRType::A(), "192.0.2.91");
+    checkRR("c.5.0.0.example.org", RRType::A(), "192.0.2.92");
+
+    checkRR("e.5.0.0.example.org", RRType::A(), "192.0.2.94");
+    checkRR("f.5.0.0.example.org", RRType::A(), "192.0.2.95");
+    checkRR("0.6.0.0.example.org", RRType::A(), "192.0.2.96");
+
+    checkRR("host106.example.org", RRType::TXT(), "Value a.6.0.0.0");
+    checkRR("host107.example.org", RRType::TXT(), "Value b.6.0.0.0");
+    checkRR("host109.example.org", RRType::TXT(), "Value D.6.0.0.0");
+    checkRR("host110.example.org", RRType::TXT(), "Value E.6.0.0.0");
+
+    checkRR("host0200.example.org", RRType::A(), "192.0.2.200");
+    checkRR("host0201.example.org", RRType::A(), "192.0.2.201");
+}
+
+TEST_F(MasterLoaderTest, generateWithNoModifiers) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$TTL 3600\n"
+        "$GENERATE 10-12 host${} A 192.0.2.$\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    ASSERT_EQ(2, errors_.size()); // For the broken GENERATE
+    EXPECT_TRUE(warnings_.empty());
+
+    checkCallbackMessage(errors_.at(0),
+                         "Invalid $GENERATE format modifiers", 3);
+    checkCallbackMessage(errors_.at(1),
+                         "$GENERATE error", 3);
+}
+
+TEST_F(MasterLoaderTest, generateWithBadModifiers) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$TTL 3600\n"
+        "$GENERATE 10-12 host${GARBAGE} A 192.0.2.$\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    ASSERT_EQ(2, errors_.size()); // For the broken GENERATE
+    EXPECT_TRUE(warnings_.empty());
+
+    checkCallbackMessage(errors_.at(0),
+                         "Invalid $GENERATE format modifiers", 3);
+    checkCallbackMessage(errors_.at(1),
+                         "$GENERATE error", 3);
+}
+
+TEST_F(MasterLoaderTest, generateMissingRange) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    EXPECT_EQ(1, errors_.size()); // For the broken GENERATE
+    EXPECT_TRUE(warnings_.empty());
+
+    checkCallbackMessage(errors_.at(0),
+                         "unexpected end of input", 2);
+}
+
+TEST_F(MasterLoaderTest, generateMissingLHS) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE 2-4\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    EXPECT_EQ(1, errors_.size()); // For the broken GENERATE
+    EXPECT_TRUE(warnings_.empty());
+
+    checkCallbackMessage(errors_.at(0),
+                         "unexpected end of input", 2);
+}
+
+TEST_F(MasterLoaderTest, generateMissingType) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE 2-4 host$\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    EXPECT_EQ(1, errors_.size()); // For the broken GENERATE
+    EXPECT_TRUE(warnings_.empty());
+
+    checkCallbackMessage(errors_.at(0),
+                         "unexpected end of input", 2);
+}
+
+TEST_F(MasterLoaderTest, generateMissingRHS) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE 2-4 host$ A\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    EXPECT_EQ(1, errors_.size()); // For the broken GENERATE
+    EXPECT_TRUE(warnings_.empty());
+
+    checkCallbackMessage(errors_.at(0),
+                         "unexpected end of input", 2);
+}
+
+TEST_F(MasterLoaderTest, generateWithBadRangeSyntax) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE ABCD host$ 3600 A 192.0.2.$\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    EXPECT_EQ(1, errors_.size()); // For the broken GENERATE
+    EXPECT_TRUE(warnings_.empty());
+
+    checkCallbackMessage(errors_.at(0),
+                         "$GENERATE: invalid range: ABCD", 2);
+}
+
+TEST_F(MasterLoaderTest, generateWithInvalidRange) {
+    // start > stop
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE 2-1 host$ 3600 A 192.0.2.$\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    EXPECT_EQ(1, errors_.size()); // For the broken GENERATE
+    EXPECT_TRUE(warnings_.empty());
+
+    checkCallbackMessage(errors_.at(0),
+                         "$GENERATE: invalid range: 2-1", 2);
+}
+
+TEST_F(MasterLoaderTest, generateWithInvalidClass) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE 1-2 host$ 3600 CH A 192.0.2.$\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    EXPECT_EQ(1, errors_.size()); // For the broken GENERATE
+    EXPECT_TRUE(warnings_.empty());
+
+    checkCallbackMessage(errors_.at(0),
+                         "Class mismatch: CH vs. IN", 2);
+}
+
+TEST_F(MasterLoaderTest, generateWithNoAvailableTTL) {
+    const string input =
+        "$ORIGIN example.org.\n"
+        "$GENERATE 1-2 host$ A 192.0.2.$\n";
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    EXPECT_EQ(1, errors_.size()); // For the broken GENERATE
+    EXPECT_TRUE(warnings_.empty());
+
+    checkCallbackMessage(errors_.at(0),
+                         "no TTL specified; load rejected", 2);
+}
+
+// Test the source is correctly popped even after error
+TEST_F(MasterLoaderTest, popAfterError) {
+    const string include_str = "$include " TEST_DATA_SRCDIR
+        "/broken.zone\nwww 3600 IN AAAA 2001:db8::1\n";
+    stringstream ss(include_str);
+    // We perform the test with MANY_ERRORS, we want to see what happens
+    // after the error.
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    EXPECT_EQ(1, errors_.size()); // For the broken RR
+    EXPECT_EQ(1, warnings_.size()); // For missing EOLN
+
+    // The included file doesn't contain anything usable, but the
+    // line after the include should be there.
+    checkRR("www.example.org", RRType::AAAA(), "2001:db8::1");
+}
+
+// Check it works the same when created based on a stream, not filename
+TEST_F(MasterLoaderTest, streamConstructor) {
+    const string zone_data(prepareZone("", true));
+    stringstream zone_stream(zone_data);
+    setLoader(zone_stream, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+
+    // Unlike the basicLoad test, if we construct the loader from a stream
+    // getSize() returns the data size in the stream immediately after the
+    // construction.
+    EXPECT_EQ(zone_data.size(), loader_->getSize());
+    EXPECT_EQ(0, loader_->getPosition());
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+
+    EXPECT_TRUE(errors_.empty());
+    EXPECT_TRUE(warnings_.empty());
+    checkRR("example.org", RRType::SOA(), "ns1.example.org. "
+            "admin.example.org. 1234 3600 1800 2419200 7200");
+    checkRR("correct.example.org", RRType::A(), "192.0.2.2");
+
+    // On completion of the load, both getSize() and getPosition() return the
+    // size of the data.
+    EXPECT_EQ(zone_data.size(), loader_->getSize());
+    EXPECT_EQ(zone_data.size(), loader_->getPosition());
+}
+
+// Try loading data incrementally.
+TEST_F(MasterLoaderTest, incrementalLoad) {
+    setLoader(TEST_DATA_SRCDIR "/example.org", Name("example.org."),
+              RRClass::IN(), MasterLoader::MANY_ERRORS);
+
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    EXPECT_FALSE(loader_->loadIncremental(2));
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+
+    EXPECT_TRUE(errors_.empty());
+    EXPECT_TRUE(warnings_.empty());
+
+    checkRR("example.org", RRType::SOA(),
+            "ns1.example.org. admin.example.org. "
+            "1234 3600 1800 2419200 7200");
+    checkRR("example.org", RRType::NS(), "ns1.example.org.");
+
+    // The third one is not loaded yet
+    EXPECT_TRUE(rrsets_.empty());
+
+    // Load the rest.
+    EXPECT_TRUE(loader_->loadIncremental(20));
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+
+    EXPECT_TRUE(errors_.empty());
+    EXPECT_TRUE(warnings_.empty());
+
+    checkRR("www.example.org", RRType::A(), "192.0.2.1");
+    checkRR("www.example.org", RRType::AAAA(), "2001:db8::1");
+}
+
+// Try loading from file that doesn't exist. There should be single error
+// saying so.
+TEST_F(MasterLoaderTest, invalidFile) {
+    setLoader("This file doesn't exist at all",
+              Name("example.org."), RRClass::IN(), MasterLoader::MANY_ERRORS);
+
+    // Nothing yet. The loader is dormant until invoked.
+    // Is it really what we want?
+    EXPECT_TRUE(errors_.empty());
+
+    loader_->load();
+
+    EXPECT_TRUE(warnings_.empty());
+    EXPECT_TRUE(rrsets_.empty());
+    ASSERT_EQ(1, errors_.size());
+    EXPECT_EQ(0, errors_[0].find("Error opening the input source file: ")) <<
+        "Different error: " << errors_[0];
+}
+
+struct ErrorCase {
+    const char* const line;    // The broken line in master file
+    const char* const reason;  // If non NULL, the reason string
+    const char* const problem; // Description of the problem for SCOPED_TRACE
+} const error_cases[] = {
+    { "www...   3600    IN  A   192.0.2.1", NULL, "Invalid name" },
+    { "www      FORTNIGHT   IN  A   192.0.2.1", NULL, "Invalid TTL" },
+    { "www      3600    XX  A   192.0.2.1", NULL, "Invalid class" },
+    { "www      3600    IN  A   bad_ip", NULL, "Invalid Rdata" },
+
+    // Parameter ordering errors
+    { "www      IN      A   3600 192.168.2.7",
+      "createRdata from text failed: Bad IN/A RDATA text: '3600'",
+      "Incorrect order of class, TTL and type" },
+    { "www      A       IN  3600 192.168.2.8",
+      "createRdata from text failed: Bad IN/A RDATA text: 'IN'",
+      "Incorrect order of class, TTL and type" },
+    { "www      3600    A   IN   192.168.2.7",
+      "createRdata from text failed: Bad IN/A RDATA text: 'IN'",
+      "Incorrect order of class, TTL and type" },
+    { "www      A       3600 IN  192.168.2.8",
+      "createRdata from text failed: Bad IN/A RDATA text: '3600'",
+      "Incorrect order of class, TTL and type" },
+
+    // Missing type and Rdata
+    { "www", "unexpected end of input", "Missing type and Rdata" },
+    { "www 3600", "unexpected end of input", "Missing type and Rdata" },
+    { "www IN", "unexpected end of input", "Missing type and Rdata" },
+    { "www 3600 IN", "unexpected end of input", "Missing type and Rdata" },
+    { "www IN 3600", "unexpected end of input", "Missing type and Rdata" },
+
+    // Missing Rdata
+    { "www A",
+      "createRdata from text failed: unexpected end of input",
+      "Missing Rdata" },
+    { "www 3600 A",
+      "createRdata from text failed: unexpected end of input",
+      "Missing Rdata" },
+    { "www IN A",
+      "createRdata from text failed: unexpected end of input",
+      "Missing Rdata" },
+    { "www 3600 IN A",
+      "createRdata from text failed: unexpected end of input",
+      "Missing Rdata" },
+    { "www IN 3600 A",
+      "createRdata from text failed: unexpected end of input",
+      "Missing Rdata" },
+
+    { "www      3600    IN", NULL, "Unexpected EOLN" },
+    { "www      3600    CH  TXT nothing", "Class mismatch: CH vs. IN",
+      "Class mismatch" },
+    { "www      \"3600\"  IN  A   192.0.2.1", NULL, "Quoted TTL" },
+    { "www      3600    \"IN\"  A   192.0.2.1", NULL, "Quoted class" },
+    { "www      3600    IN  \"A\"   192.0.2.1", NULL, "Quoted type" },
+    { "unbalanced)paren 3600    IN  A   192.0.2.1", NULL, "Token error 1" },
+    { "www  3600    unbalanced)paren    A   192.0.2.1", NULL,
+      "Token error 2" },
+    // Check the unknown directive. The rest looks like ordinary RR,
+    // so we see the $ is actually special.
+    { "$UNKNOWN 3600    IN  A   192.0.2.1", NULL, "Unknown $ directive" },
+    { "$INCLUD " TEST_DATA_SRCDIR "/example.org", "Unknown directive 'INCLUD'",
+        "Include too short" },
+    { "$INCLUDES " TEST_DATA_SRCDIR "/example.org",
+        "Unknown directive 'INCLUDES'", "Include too long" },
+    { "$INCLUDE", "unexpected end of input", "Missing include path" },
+    // The following two error messages are system dependent, omitting
+    { "$INCLUDE /file/not/found", NULL, "Include file not found" },
+    { "$INCLUDE /file/not/found example.org. and here goes bunch of garbage",
+        NULL, "Include file not found and garbage at the end of line" },
+    { "$ORIGIN", "unexpected end of input", "Missing origin name" },
+    { "$ORIGIN invalid...name", "duplicate period in invalid...name",
+        "Invalid name for origin" },
+    { "$ORIGIN )brokentoken", "unbalanced parentheses",
+        "Broken token in origin" },
+    { "$ORIGIN example.org. garbage", "Extra tokens at the end of line",
+        "Garbage after origin" },
+    { "$ORIGI name.", "Unknown directive 'ORIGI'", "$ORIGIN too short" },
+    { "$ORIGINAL name.", "Unknown directive 'ORIGINAL'", "$ORIGIN too long" },
+    { "$TTL 100 extra-garbage", "Extra tokens at the end of line",
+      "$TTL with extra token" },
+    { "$TTL", "unexpected end of input", "missing TTL" },
+    { "$TTL No-ttl", "Unknown unit used: N in: No-ttl", "bad TTL" },
+    { "$TTL \"100\"", "unexpected quotes", "bad TTL, quoted" },
+    { "$TT 100", "Unknown directive 'TT'", "bad directive, too short" },
+    { "$TTLLIKE 100", "Unknown directive 'TTLLIKE'", "bad directive, extra" },
+    { NULL, NULL, NULL }
+};
+
+// Test a broken zone is handled properly. We test several problems,
+// both in strict and lenient mode.
+TEST_F(MasterLoaderTest, brokenZone) {
+    for (const ErrorCase* ec = error_cases; ec->line != NULL; ++ec) {
+        SCOPED_TRACE(ec->problem);
+        const string zone(prepareZone(ec->line, true));
+
+        {
+            SCOPED_TRACE("Strict mode");
+            clear();
+            stringstream zone_stream(zone);
+            setLoader(zone_stream, Name("example.org."), RRClass::IN(),
+                      MasterLoader::DEFAULT);
+            EXPECT_FALSE(loader_->loadedSuccessfully());
+            EXPECT_THROW(loader_->load(), MasterLoaderError);
+            EXPECT_FALSE(loader_->loadedSuccessfully());
+            EXPECT_EQ(1, errors_.size());
+            if (ec->reason != NULL) {
+                checkCallbackMessage(errors_.at(0), ec->reason, 2);
+            }
+            EXPECT_TRUE(warnings_.empty());
+
+            checkRR("example.org", RRType::SOA(), "ns1.example.org. "
+                    "admin.example.org. 1234 3600 1800 2419200 7200");
+            // In the strict mode, it is aborted. The last RR is not
+            // even attempted.
+            EXPECT_TRUE(rrsets_.empty());
+        }
+
+        {
+            SCOPED_TRACE("Lenient mode");
+            clear();
+            stringstream zone_stream(zone);
+            setLoader(zone_stream, Name("example.org."), RRClass::IN(),
+                      MasterLoader::MANY_ERRORS);
+            EXPECT_FALSE(loader_->loadedSuccessfully());
+            EXPECT_NO_THROW(loader_->load());
+            EXPECT_FALSE(loader_->loadedSuccessfully());
+            EXPECT_EQ(1, errors_.size());
+            EXPECT_TRUE(warnings_.empty());
+            checkRR("example.org", RRType::SOA(), "ns1.example.org. "
+                    "admin.example.org. 1234 3600 1800 2419200 7200");
+            // This one is below the error one.
+            checkRR("correct.example.org", RRType::A(), "192.0.2.2");
+            EXPECT_TRUE(rrsets_.empty());
+        }
+
+        {
+            SCOPED_TRACE("Error at EOF");
+            // This case is interesting only in the lenient mode.
+            clear();
+            const string zoneEOF(prepareZone(ec->line, false));
+            stringstream zone_stream(zoneEOF);
+            setLoader(zone_stream, Name("example.org."), RRClass::IN(),
+                      MasterLoader::MANY_ERRORS);
+            EXPECT_FALSE(loader_->loadedSuccessfully());
+            EXPECT_NO_THROW(loader_->load());
+            EXPECT_FALSE(loader_->loadedSuccessfully());
+            EXPECT_EQ(1, errors_.size()) << errors_[0] << "\n" << errors_[1];
+            // The unexpected EOF warning
+            EXPECT_EQ(1, warnings_.size());
+            checkRR("example.org", RRType::SOA(), "ns1.example.org. "
+                    "admin.example.org. 1234 3600 1800 2419200 7200");
+            EXPECT_TRUE(rrsets_.empty());
+        }
+    }
+}
+
+// Check that a garbage after the include generates an error, but not fatal
+// one (in lenient mode) and we can recover.
+TEST_F(MasterLoaderTest, includeWithGarbage) {
+    // Include an origin (example.org) because we expect it to be handled
+    // soon and we don't want it to break here.
+    const string include_str("$INCLUDE " TEST_DATA_SRCDIR
+                             "/example.org example.org. bunch of other stuff\n"
+                             "www 3600 IN AAAA 2001:db8::1\n");
+    stringstream zone_stream(include_str);
+    setLoader(zone_stream, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    EXPECT_NO_THROW(loader_->load());
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    ASSERT_EQ(1, errors_.size());
+    checkCallbackMessage(errors_.at(0), "Extra tokens at the end of line", 1);
+    // It says something about extra tokens at the end
+    EXPECT_NE(string::npos, errors_[0].find("Extra"));
+    EXPECT_TRUE(warnings_.empty());
+    checkBasicRRs();
+    checkRR("www.example.org", RRType::AAAA(), "2001:db8::1");
+}
+
+// Check we error about garbage at the end of $ORIGIN line (but the line
+// works).
+TEST_F(MasterLoaderTest, originWithGarbage) {
+    const string origin_str = "$ORIGIN www.example.org. More garbage here\n"
+        "@  1H  IN  A   192.0.2.1\n";
+    stringstream ss(origin_str);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+    EXPECT_NO_THROW(loader_->load());
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    ASSERT_EQ(1, errors_.size());
+    checkCallbackMessage(errors_.at(0), "Extra tokens at the end of line", 1);
+    EXPECT_TRUE(warnings_.empty());
+    checkARR("www.example.org");
+}
+
+// Test we can pass both file to include and the origin to switch
+TEST_F(MasterLoaderTest, includeAndOrigin) {
+    // First, switch origin to something else, so we can check it is
+    // switched back.
+    const string include_string = "$ORIGIN www.example.org.\n"
+        "@  1H  IN  A   192.0.2.1\n"
+        // Then include the file with data and switch origin back
+        "$INCLUDE " TEST_DATA_SRCDIR "/example.org example.org.\n"
+        // Another RR to see we fall back to the previous origin.
+        "www    1H  IN  A   192.0.2.1\n";
+    stringstream ss(include_string);
+    setLoader(ss, Name("example.org"), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+    // Successfully load the data
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+    EXPECT_TRUE(warnings_.empty());
+    // And check it's the correct data
+    checkARR("www.example.org");
+    checkBasicRRs();
+    checkARR("www.www.example.org");
+}
+
+// Like above, but the origin after include is bogus. The whole line should
+// be rejected.
+TEST_F(MasterLoaderTest, includeAndBadOrigin) {
+    const string include_string =
+        "$INCLUDE " TEST_DATA_SRCDIR "/example.org example..org.\n"
+        // Another RR to see the switch survives after we exit include
+        "www    1H  IN  A   192.0.2.1\n";
+    stringstream ss(include_string);
+    setLoader(ss, Name("example.org"), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    EXPECT_EQ(1, errors_.size());
+    checkCallbackMessage(errors_.at(0), "duplicate period in example..org.",
+                         1);
+    EXPECT_TRUE(warnings_.empty());
+    // And check it's the correct data
+    checkARR("www.example.org");
+}
+
+// Check the origin doesn't get outside of the included file.
+TEST_F(MasterLoaderTest, includeOriginRestore) {
+    const string include_string =
+        "$INCLUDE " TEST_DATA_SRCDIR "/origincheck.txt\n"
+        "@  1H  IN  A   192.0.2.1\n";
+    stringstream ss(include_string);
+    setLoader(ss, Name("example.org"), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+    // Successfully load the data
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+    EXPECT_TRUE(warnings_.empty());
+    // And check it's the correct data
+    checkARR("www.example.org");
+    checkARR("example.org");
+}
+
+// Check we restore the last name for initial whitespace when returning from
+// include. But we do produce a warning if there's one just ofter the include.
+TEST_F(MasterLoaderTest, includeAndInitialWS) {
+    const string include_string = "xyz  1H  IN  A   192.0.2.1\n"
+        "$INCLUDE " TEST_DATA_SRCDIR "/example.org\n"
+        "   1H  IN  A   192.0.2.1\n";
+    stringstream ss(include_string);
+    setLoader(ss, Name("example.org"), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+    // Successfully load the data
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+    EXPECT_EQ(1, warnings_.size());
+    checkCallbackMessage(warnings_.at(0),
+                         "Owner name omitted around $INCLUDE, the result might "
+                         "not be as expected", 3);
+    checkARR("xyz.example.org");
+    checkBasicRRs();
+    checkARR("xyz.example.org");
+}
+
+// Test for "$TTL"
+TEST_F(MasterLoaderTest, ttlDirective) {
+    stringstream zone_stream;
+
+    // Set the default TTL with $TTL followed by an RR omitting the TTL
+    zone_stream << "$TTL 1800\nexample.org. IN A 192.0.2.1\n";
+    // $TTL can be quoted.  Also testing the case of $TTL being changed.
+    zone_stream << "\"$TTL\" 100\na.example.org. IN A 192.0.2.2\n";
+    // Extended TTL form is accepted.
+    zone_stream << "$TTL 1H\nb.example.org. IN A 192.0.2.3\n";
+    // Matching is case insensitive.
+    zone_stream << "$tTl 360\nc.example.org. IN A 192.0.2.4\n";
+    // Maximum allowable TTL
+    zone_stream << "$TTL 2147483647\nd.example.org. IN A 192.0.2.5\n";
+
+    setLoader(zone_stream, Name("example.org."), RRClass::IN(),
+              MasterLoader::DEFAULT);
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    checkRR("example.org", RRType::A(), "192.0.2.1", RRTTL(1800));
+    checkRR("a.example.org", RRType::A(), "192.0.2.2", RRTTL(100));
+    checkRR("b.example.org", RRType::A(), "192.0.2.3", RRTTL(3600));
+    checkRR("c.example.org", RRType::A(), "192.0.2.4", RRTTL(360));
+    checkRR("d.example.org", RRType::A(), "192.0.2.5", RRTTL(2147483647));
+}
+
+TEST_F(MasterLoaderTest, ttlFromSOA) {
+    // No $TTL, and the SOA doesn't have an explicit TTL field.  Its minimum
+    // TTL field will be used as the RR's TTL, and it'll be used as the
+    // default TTL for others.
+    stringstream zone_stream("example.org. IN SOA . . 0 0 0 0 1800\n"
+                             "a.example.org. IN A 192.0.2.1\n");
+    setLoader(zone_stream, Name("example.org."), RRClass::IN(),
+              MasterLoader::DEFAULT);
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    checkRR("example.org", RRType::SOA(), ". . 0 0 0 0 1800", RRTTL(1800));
+    checkRR("a.example.org", RRType::A(), "192.0.2.1", RRTTL(1800));
+
+    // The use of SOA minimum TTL should have caused a warning.
+    EXPECT_EQ(1, warnings_.size());
+    checkCallbackMessage(warnings_.at(0),
+                         "no TTL specified; using SOA MINTTL instead", 1);
+}
+
+TEST_F(MasterLoaderTest, ttlFromPrevious) {
+    // No available default TTL.  2nd and 3rd RR will use the TTL of the
+    // 1st RR.  This will result in a warning, but only for the first time.
+    stringstream zone_stream("a.example.org. 1800 IN A 192.0.2.1\n"
+                             "b.example.org. IN A 192.0.2.2\n"
+                             "c.example.org. IN A 192.0.2.3\n");
+    setLoader(zone_stream, Name("example.org."), RRClass::IN(),
+              MasterLoader::DEFAULT);
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    checkRR("a.example.org", RRType::A(), "192.0.2.1", RRTTL(1800));
+    checkRR("b.example.org", RRType::A(), "192.0.2.2", RRTTL(1800));
+    checkRR("c.example.org", RRType::A(), "192.0.2.3", RRTTL(1800));
+
+    EXPECT_EQ(1, warnings_.size());
+    checkCallbackMessage(warnings_.at(0), "using RFC1035 TTL semantics", 2);
+}
+
+TEST_F(MasterLoaderTest, RRParamsOrdering) {
+    // We test the order and existence of TTL, class and type. See
+    // MasterLoader::MasterLoaderImpl::parseRRParams() for ordering.
+
+    stringstream zone_stream;
+    // <TTL> <class> <type> <RDATA>
+    zone_stream << "a.example.org. 1800 IN A 192.0.2.1\n";
+    // <type> <RDATA>
+    zone_stream << "b.example.org. A 192.0.2.2\n";
+    // <class> <TTL> <type> <RDATA>
+    zone_stream << "c.example.org. IN 3600 A 192.0.2.3\n";
+    // <TTL> <type> <RDATA>
+    zone_stream << "d.example.org. 7200 A 192.0.2.4\n";
+    // <class> <type> <RDATA>
+    zone_stream << "e.example.org. IN A 192.0.2.5\n";
+
+    setLoader(zone_stream, Name("example.org."), RRClass::IN(),
+              MasterLoader::DEFAULT);
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    checkRR("a.example.org", RRType::A(), "192.0.2.1", RRTTL(1800));
+    checkRR("b.example.org", RRType::A(), "192.0.2.2", RRTTL(1800));
+    checkRR("c.example.org", RRType::A(), "192.0.2.3", RRTTL(3600));
+    checkRR("d.example.org", RRType::A(), "192.0.2.4", RRTTL(7200));
+    checkRR("e.example.org", RRType::A(), "192.0.2.5", RRTTL(7200));
+
+    EXPECT_EQ(1, warnings_.size());
+    checkCallbackMessage(warnings_.at(0), "using RFC1035 TTL semantics", 2);
+}
+
+TEST_F(MasterLoaderTest, ttlFromPreviousSOA) {
+    // Mixture of the previous two cases: SOA has explicit TTL, followed by
+    // an RR without an explicit TTL.  In this case the minimum TTL won't be
+    // recognized as the "default TTL".
+    stringstream zone_stream("example.org. 100 IN SOA . . 0 0 0 0 1800\n"
+                             "a.example.org. IN A 192.0.2.1\n");
+    setLoader(zone_stream, Name("example.org."), RRClass::IN(),
+              MasterLoader::DEFAULT);
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+
+    checkRR("example.org", RRType::SOA(), ". . 0 0 0 0 1800", RRTTL(100));
+    checkRR("a.example.org", RRType::A(), "192.0.2.1", RRTTL(100));
+
+    EXPECT_EQ(1, warnings_.size());
+    checkCallbackMessage(warnings_.at(0), "using RFC1035 TTL semantics", 2);
+}
+
+TEST_F(MasterLoaderTest, ttlUnknown) {
+    // No available TTL is known for the first RR.
+    stringstream zone_stream("a.example.org. IN A 192.0.2.1\n");
+    setLoader(zone_stream, Name("example.org."), RRClass::IN(),
+              MasterLoader::DEFAULT);
+    EXPECT_THROW(loader_->load(), MasterLoaderError);
+}
+
+TEST_F(MasterLoaderTest, ttlUnknownAndContinue) {
+    stringstream zone_stream("a.example.org. IN A 192.0.2.1\n"
+                             "b.example.org. 1800 IN A 192.0.2.2\n");
+    setLoader(zone_stream, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    checkRR("b.example.org", RRType::A(), "192.0.2.2", RRTTL(1800));
+
+    EXPECT_TRUE(warnings_.empty());
+    EXPECT_EQ(1, errors_.size());
+    checkCallbackMessage(errors_.at(0), "no TTL specified; load rejected", 1);
+}
+
+TEST_F(MasterLoaderTest, ttlUnknownAndEOF) {
+    // Similar to the previous case, but the input will be abruptly terminated
+    // after the offending RR.  This will cause an additional warning.
+    stringstream zone_stream("a.example.org. IN A 192.0.2.1");
+    setLoader(zone_stream, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(rrsets_.empty());
+
+    EXPECT_EQ(1, errors_.size());
+    checkCallbackMessage(errors_.at(0), "no TTL specified; load rejected", 1);
+
+    // RDATA implementation can complain about it, too.  To be independent of
+    // its details, we focus on the very last warning.
+    EXPECT_FALSE(warnings_.empty());
+    checkCallbackMessage(*warnings_.rbegin(), "File does not end with newline",
+                         1);
+}
+
+TEST_F(MasterLoaderTest, ttlOverflow) {
+    stringstream zone_stream;
+    zone_stream << "example.org. IN SOA . . 0 0 0 0 2147483648\n";
+    zone_stream << "$TTL 3600\n"; // reset to an in-range value
+    zone_stream << "$TTL 2147483649\n";
+    zone_stream << "a.example.org. IN A 192.0.2.1\n";
+    zone_stream << "$TTL 3600\n"; // reset to an in-range value
+    zone_stream << "b.example.org. 2147483650 IN A 192.0.2.2\n";
+    setLoader(zone_stream, Name("example.org."), RRClass::IN(),
+              MasterLoader::DEFAULT);
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_EQ(3, rrsets_.size());
+
+    checkRR("example.org", RRType::SOA(), ". . 0 0 0 0 2147483648", RRTTL(0));
+    checkRR("a.example.org", RRType::A(), "192.0.2.1", RRTTL(0));
+    checkRR("b.example.org", RRType::A(), "192.0.2.2", RRTTL(0));
+
+    EXPECT_EQ(4, warnings_.size());
+    checkCallbackMessage(warnings_.at(1),
+                         "TTL 2147483648 > MAXTTL, setting to 0 per RFC2181",
+                         1);
+    checkCallbackMessage(warnings_.at(2),
+                         "TTL 2147483649 > MAXTTL, setting to 0 per RFC2181",
+                         3);
+    checkCallbackMessage(warnings_.at(3),
+                         "TTL 2147483650 > MAXTTL, setting to 0 per RFC2181",
+                         6);
+}
+
+// Test the constructor rejects empty add callback.
+TEST_F(MasterLoaderTest, emptyCallback) {
+    EXPECT_THROW(MasterLoader(TEST_DATA_SRCDIR "/example.org",
+                              Name("example.org"), RRClass::IN(), callbacks_,
+                              AddRRCallback()), isc::InvalidParameter);
+    // And the same with the second constructor
+    stringstream ss("");
+    EXPECT_THROW(MasterLoader(ss, Name("example.org"), RRClass::IN(),
+                              callbacks_, AddRRCallback()),
+                 isc::InvalidParameter);
+}
+
+// Check it throws when we try to load after loading was complete.
+TEST_F(MasterLoaderTest, loadTwice) {
+    setLoader(TEST_DATA_SRCDIR "/example.org", Name("example.org."),
+              RRClass::IN(), MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_THROW(loader_->load(), isc::InvalidOperation);
+    // Don't check them, they are not interesting, so suppress the error
+    // at TearDown
+    rrsets_.clear();
+}
+
+// Load 0 items should be rejected
+TEST_F(MasterLoaderTest, loadZero) {
+    setLoader(TEST_DATA_SRCDIR "/example.org", Name("example.org."),
+              RRClass::IN(), MasterLoader::MANY_ERRORS);
+    EXPECT_THROW(loader_->loadIncremental(0), isc::InvalidParameter);
+}
+
+// Test there's a warning when the file terminates without end of
+// line.
+TEST_F(MasterLoaderTest, noEOLN) {
+    // No \n at the end
+    const string input("example.org. 3600 IN SOA ns1.example.org. "
+                       "admin.example.org. 1234 3600 1800 2419200 7200");
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+    // There should be one warning about the EOLN
+    EXPECT_EQ(1, warnings_.size());
+    checkRR("example.org", RRType::SOA(), "ns1.example.org. "
+            "admin.example.org. 1234 3600 1800 2419200 7200");
+}
+
+// Test it rejects when we don't have the previous name to use in place of
+// initial whitespace
+TEST_F(MasterLoaderTest, noPreviousName) {
+    const string input("    1H  IN  A   192.0.2.1\n");
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+    loader_->load();
+    EXPECT_FALSE(loader_->loadedSuccessfully());
+    EXPECT_EQ(1, errors_.size());
+    checkCallbackMessage(errors_.at(0), "No previous name to use in place of "
+                         "initial whitespace", 1);
+    EXPECT_TRUE(warnings_.empty());
+}
+
+// Check we warn if the first RR in an included file has omitted name
+TEST_F(MasterLoaderTest, previousInInclude) {
+    const string input("www 1H  IN  A   192.0.2.1\n"
+                       "$INCLUDE " TEST_DATA_SRCDIR "/omitcheck.txt\n");
+    stringstream ss(input);
+    setLoader(ss, Name("example.org"), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+    // There should be one warning about the EOLN
+    EXPECT_EQ(1, warnings_.size());
+    checkCallbackMessage(warnings_.at(0), "Owner name omitted around "
+                         "$INCLUDE, the result might not be as expected", 1);
+    checkARR("www.example.org");
+    checkARR("www.example.org");
+}
+
+TEST_F(MasterLoaderTest, numericOwnerName) {
+    const string input("$ORIGIN example.org.\n"
+                       "1 3600 IN A 192.0.2.1\n");
+    stringstream ss(input);
+    setLoader(ss, Name("example.org."), RRClass::IN(),
+              MasterLoader::MANY_ERRORS);
+
+    loader_->load();
+    EXPECT_TRUE(loader_->loadedSuccessfully());
+    EXPECT_TRUE(errors_.empty());
+    EXPECT_TRUE(warnings_.empty());
+
+    checkRR("1.example.org", RRType::A(), "192.0.2.1");
+}
+
+}
diff --git a/src/lib/dns/tests/masterload_unittest.cc b/src/lib/dns/tests/masterload_unittest.cc
new file mode 100644
index 0000000..e412de0
--- /dev/null
+++ b/src/lib/dns/tests/masterload_unittest.cc
@@ -0,0 +1,397 @@
+// Copyright (C) 2010-2022 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <functional>
+#include <ios>
+#include <fstream>
+#include <sstream>
+#include <string>
+#include <vector>
+
+#include <gtest/gtest.h>
+
+#include <dns/masterload.h>
+#include <dns/name.h>
+#include <dns/rdata.h>
+#include <dns/rrclass.h>
+#include <dns/rrset.h>
+
+using namespace std;
+using namespace isc::dns;
+namespace ph = std::placeholders;
+
+namespace {
+// A callback functor for masterLoad() commonly used for the following tests.
+class TestCallback {
+public:
+    TestCallback(vector<ConstRRsetPtr>& rrsets) : rrsets_(rrsets) {}
+    void operator()(ConstRRsetPtr rrset) {
+        rrsets_.push_back(rrset);
+    }
+private:
+    vector<ConstRRsetPtr>& rrsets_;
+};
+
+// A function version of TestCallback.
+void
+testCallback(ConstRRsetPtr rrset, vector<ConstRRsetPtr>* rrsets) {
+    rrsets->push_back(rrset);
+}
+
+class MasterLoadTest : public ::testing::Test {
+protected:
+    MasterLoadTest() : origin("example.com"), zclass(RRClass::IN()),
+                   callback(results) {}
+public:
+    void rrsetCallback(ConstRRsetPtr rrset) {
+        results.push_back(rrset);
+    }
+protected:
+    Name origin;
+    RRClass zclass;
+    stringstream rr_stream;
+    vector<ConstRRsetPtr> results;
+    TestCallback callback;
+};
+
+// Commonly used test RRs
+const char* const txt_rr = "example.com. 3600 IN TXT \"test data\"\n";
+const char* const a_rr1 = "www.example.com. 60 IN A 192.0.2.1\n";
+const char* const a_rr2 = "www.example.com. 60 IN A 192.0.2.2\n";
+const char* const a_rr3 = "ftp.example.com. 60 IN A 192.0.2.3\n";
+// multi-field RR case
+const char* const soa_rr = "example.com. 7200 IN SOA . . 0 0 0 0 0\n";
+// A couple of RRSIGs, different type covered
+const char* const rrsig_rr1 =
+    "www.example.com. 60 IN RRSIG A 5 3 3600 20000101000000 20000201000000 "
+    "12345 example.com. FAKEFAKEFAKE\n";
+const char* const rrsig_rr2 =
+    "www.example.com. 60 IN RRSIG AAAA 5 3 3600 20000101000000 20000201000000 "
+    "12345 example.com. FAKEFAKEFAKE\n";
+
+// Commonly used for some tests to check the constructed RR content.
+const char* const dnskey_rdata =
+    "256 3 7 AwEAAaetidLzsKWUt4swWR8yu0wPHPiUi8LUsAD0QPWU+wzt89epO6tH "
+    "zkMBVDkC7qphQO2hTY4hHn9npWFRw5BYubE=\n";
+
+TEST_F(MasterLoadTest, loadRRs) {
+    // a simple case: loading 3 RRs, each consists of a single RRset.
+    rr_stream << txt_rr << a_rr1 << soa_rr;
+    masterLoad(rr_stream, origin, zclass, callback);
+    ASSERT_EQ(3, results.size());
+    EXPECT_EQ(txt_rr, results[0]->toText());
+    EXPECT_EQ(a_rr1, results[1]->toText());
+    EXPECT_EQ(soa_rr, results[2]->toText());
+}
+
+TEST_F(MasterLoadTest, loadWithFunctionCallback) {
+    // The same test as loadRRs but using a normal function (not a functor
+    // object)
+    rr_stream << txt_rr << a_rr1 << soa_rr;
+    masterLoad(rr_stream, origin, zclass,
+               std::bind(&testCallback, ph::_1, &results));
+    ASSERT_EQ(3, results.size());
+    EXPECT_EQ(txt_rr, results[0]->toText());
+    EXPECT_EQ(a_rr1, results[1]->toText());
+    EXPECT_EQ(soa_rr, results[2]->toText());
+}
+
+TEST_F(MasterLoadTest, loadWithMemFunctionCallback) {
+    // The same test as loadRRs but using a class member function (with a
+    // help of std.bind)
+    rr_stream << txt_rr << a_rr1 << soa_rr;
+    masterLoad(rr_stream, origin, zclass,
+               std::bind(&MasterLoadTest::rrsetCallback, this, ph::_1));
+    ASSERT_EQ(3, results.size());
+    EXPECT_EQ(txt_rr, results[0]->toText());
+    EXPECT_EQ(a_rr1, results[1]->toText());
+    EXPECT_EQ(soa_rr, results[2]->toText());
+}
+
+TEST_F(MasterLoadTest, loadComments) {
+    rr_stream << ";; comment line, should be skipped\n"
+              << "\n"           // blank line (should be skipped)
+              << txt_rr;
+    masterLoad(rr_stream, origin, zclass, callback);
+    ASSERT_EQ(1, results.size());
+    EXPECT_EQ(txt_rr, results[0]->toText());
+}
+
+TEST_F(MasterLoadTest, loadRRset) {
+    // load an RRset containing two RRs
+    rr_stream << a_rr1 << a_rr2;
+    masterLoad(rr_stream, origin, zclass, callback);
+    ASSERT_EQ(1, results.size());
+    EXPECT_EQ(string(a_rr1) + string(a_rr2), results[0]->toText());
+}
+
+TEST_F(MasterLoadTest, loadRRsetsOfSameType) {
+    // load two RRsets with the same RR type and different owner names.
+    // the loader must distinguish them as separate RRsets.
+    rr_stream << a_rr1 << a_rr3;
+    masterLoad(rr_stream, origin, zclass, callback);
+    ASSERT_EQ(2, results.size());
+    EXPECT_EQ(a_rr1, results[0]->toText());
+    EXPECT_EQ(a_rr3, results[1]->toText());
+}
+
+TEST_F(MasterLoadTest, loadRRsetsInterleaved) {
+    // two RRs that belongs to the same RRset (rr1 and rr2) are interleaved
+    // by another.  This is an unexpected case for this loader, but it's
+    // not considered an error.  The loader will simply treat them separate
+    // RRsets.
+    rr_stream << a_rr1 << a_rr3 << a_rr2;
+    masterLoad(rr_stream, origin, zclass, callback);
+    ASSERT_EQ(3, results.size());
+    EXPECT_EQ(a_rr1, results[0]->toText());
+    EXPECT_EQ(a_rr3, results[1]->toText());
+    EXPECT_EQ(a_rr2, results[2]->toText());
+}
+
+TEST_F(MasterLoadTest, loadRRsigs) {
+    // RRSIGs of different types covered should be separated
+    rr_stream << rrsig_rr1 << rrsig_rr2;
+    masterLoad(rr_stream, origin, zclass, callback);
+    EXPECT_EQ(2, results.size());
+}
+
+// This test was disabled by #2387, because the test data has trailing
+// comments and it (eventually) uses the string RDATA constructor which
+// doesn't support them. This test should be fixed and re-enabled by
+// #2381, or deleted.
+TEST_F(MasterLoadTest, DISABLED_loadRRWithComment) {
+    // Comment at the end of line should be ignored and the RR should be
+    // accepted.
+    rr_stream << "example.com. 3600 IN DNSKEY\t256 3 7 "
+        "AwEAAaetidLzsKWUt4swWR8yu0wPHPiUi8LUsAD0QPWU+wzt89epO6tH "
+        "zkMBVDkC7qphQO2hTY4hHn9npWFRw5BYubE=  ; key id = 40430\n";
+    masterLoad(rr_stream, origin, zclass, callback);
+    ASSERT_EQ(1, results.size());
+    EXPECT_EQ(0, results[0]->getRdataIterator()->getCurrent().compare(
+                  *rdata::createRdata(RRType::DNSKEY(), zclass,
+                                      dnskey_rdata)));
+}
+
+// This test was disabled by #2387, because the test data has trailing
+// comments and it (eventually) uses the string RDATA constructor which
+// doesn't support them. This test should be fixed and re-enabled by
+// #2381, or deleted.
+TEST_F(MasterLoadTest, DISABLED_loadRRWithCommentNoSpace) {
+    // Similar to the previous one, but there's no space before comments.
+    // It should still work.
+    rr_stream << "example.com. 3600 IN DNSKEY\t256 3 7 "
+        "AwEAAaetidLzsKWUt4swWR8yu0wPHPiUi8LUsAD0QPWU+wzt89epO6tH "
+        "zkMBVDkC7qphQO2hTY4hHn9npWFRw5BYubE=; key id = 40430\n";
+    masterLoad(rr_stream, origin, zclass, callback);
+    ASSERT_EQ(1, results.size());
+    EXPECT_EQ(0, results[0]->getRdataIterator()->getCurrent().compare(
+                  *rdata::createRdata(RRType::DNSKEY(), zclass,
+                                      dnskey_rdata)));
+}
+
+// This test was disabled by #2387, because the test data has trailing
+// comments and it (eventually) uses the string RDATA constructor which
+// doesn't support them. This test should be fixed and re-enabled by
+// #2381, or deleted.
+TEST_F(MasterLoadTest, DISABLED_loadRRWithCommentEmptyComment) {
+    // Similar to the previous one, but there's no data after the ;
+    // It should still work.
+    rr_stream << "example.com. 3600 IN DNSKEY\t256 3 7 "
+        "AwEAAaetidLzsKWUt4swWR8yu0wPHPiUi8LUsAD0QPWU+wzt89epO6tH "
+        "zkMBVDkC7qphQO2hTY4hHn9npWFRw5BYubE= ;\n";
+    masterLoad(rr_stream, origin, zclass, callback);
+    ASSERT_EQ(1, results.size());
+    EXPECT_EQ(0, results[0]->getRdataIterator()->getCurrent().compare(
+                  *rdata::createRdata(RRType::DNSKEY(), zclass,
+                                      dnskey_rdata)));
+}
+
+// This test was disabled by #2387, because the test data has trailing
+// comments and it (eventually) uses the string RDATA constructor which
+// doesn't support them. This test should be fixed and re-enabled by
+// #2381, or deleted.
+TEST_F(MasterLoadTest, DISABLED_loadRRWithCommentEmptyCommentNoSpace) {
+    // Similar to the previous one, but there's no space before or after ;
+    // It should still work.
+    rr_stream << "example.com. 3600 IN DNSKEY\t256 3 7 "
+        "AwEAAaetidLzsKWUt4swWR8yu0wPHPiUi8LUsAD0QPWU+wzt89epO6tH "
+        "zkMBVDkC7qphQO2hTY4hHn9npWFRw5BYubE=;\n";
+    masterLoad(rr_stream, origin, zclass, callback);
+    ASSERT_EQ(1, results.size());
+    EXPECT_EQ(0, results[0]->getRdataIterator()->getCurrent().compare(
+                  *rdata::createRdata(RRType::DNSKEY(), zclass,
+                                      dnskey_rdata)));
+}
+
+TEST_F(MasterLoadTest, loadRRWithEOLWhitespace) {
+    // Test with whitespace after rdata
+    // It should still work.
+    rr_stream << "example.com. 3600 IN NSEC3PARAM 1 0 1 beef \n";
+    masterLoad(rr_stream, origin, zclass, callback);
+    ASSERT_EQ(1, results.size());
+    EXPECT_EQ(0, results[0]->getRdataIterator()->getCurrent().compare(
+                  *rdata::createRdata(RRType::NSEC3PARAM(), zclass,
+                                      "1 0 1 beef")));
+}
+
+TEST_F(MasterLoadTest, loadRRWithEOLWhitespaceTab) {
+    // Similar to the previous one, tab instead of space.
+    // It should still work.
+    rr_stream << "example.com. 3600 IN NSEC3PARAM 1 0 1 beef\t\n";
+    masterLoad(rr_stream, origin, zclass, callback);
+    ASSERT_EQ(1, results.size());
+    EXPECT_EQ(0, results[0]->getRdataIterator()->getCurrent().compare(
+                  *rdata::createRdata(RRType::NSEC3PARAM(), zclass,
+                                      "1 0 1 beef")));
+}
+
+TEST_F(MasterLoadTest, loadRRNoComment) {
+    // A semicolon in a character-string shouldn't confuse the parser.
+    rr_stream << "example.com. 3600 IN TXT \"aaa;bbb\"\n";
+    masterLoad(rr_stream, origin, zclass, callback);
+    EXPECT_EQ(1, results.size());
+    EXPECT_EQ(0, results[0]->getRdataIterator()->getCurrent().compare(
+                  *rdata::createRdata(RRType::TXT(), zclass,
+                                      "\"aaa;bbb\"")));
+}
+
+TEST_F(MasterLoadTest, nonAbsoluteOwner) {
+    // If the owner name is not absolute, the zone origin is assumed to be
+    // its origin.
+    rr_stream << "example.com 3600 IN A 192.0.2.1";
+    masterLoad(rr_stream, origin, zclass, callback);
+    EXPECT_EQ(1, results.size());
+    EXPECT_EQ(results[0]->getName(), Name("example.com.example.com"));
+}
+
+TEST_F(MasterLoadTest, loadRREmptyAndComment) {
+    // There's no RDATA (invalid in this case) but a comment.  This position
+    // shouldn't cause any disruption and should be treated as a normal error.
+    rr_stream << "example.com. 3600 IN A ;\n";
+    EXPECT_THROW(masterLoad(rr_stream, origin, zclass, callback),
+                 MasterLoadError);
+}
+
+TEST_F(MasterLoadTest, loadWithNoEOF) {
+    // the input stream doesn't end with a new line (and the following blank
+    // line).  It should be accepted.
+    string rr_string(a_rr1);
+    rr_string.erase(rr_string.end() - 1);
+    rr_stream << rr_string;
+    masterLoad(rr_stream, origin, zclass, callback);
+    ASSERT_EQ(1, results.size());
+    EXPECT_EQ(a_rr1, results[0]->toText());
+}
+
+TEST_F(MasterLoadTest, loadEmpty) {
+    // an unusual case: empty input.  load must succeed with an empty result.
+    masterLoad(rr_stream, origin, zclass, callback);
+    EXPECT_EQ(0, results.size());
+}
+
+TEST_F(MasterLoadTest, loadWithBeginningSpace) {
+    rr_stream << " " << a_rr1;
+    EXPECT_THROW(masterLoad(rr_stream, origin, zclass, callback),
+                 MasterLoadError);
+}
+
+TEST_F(MasterLoadTest, loadWithBeginningTab) {
+    rr_stream << "\t" << a_rr1;
+    EXPECT_THROW(masterLoad(rr_stream, origin, zclass, callback),
+                 MasterLoadError);
+}
+
+TEST_F(MasterLoadTest, loadInvalidRRClass) {
+    rr_stream << "example.com. 3600 CH TXT \"test text\"";
+    EXPECT_THROW(masterLoad(rr_stream, origin, zclass, callback),
+                 MasterLoadError);
+}
+
+TEST_F(MasterLoadTest, loadOutOfZoneData) {
+    rr_stream << "example.org. 3600 IN A 192.0.2.255";
+    EXPECT_THROW(masterLoad(rr_stream, origin, zclass, callback),
+                 MasterLoadError);
+}
+
+TEST_F(MasterLoadTest, loadNonAtopSOA) {
+    // SOA's owner name must be zone's origin.
+    rr_stream << "soa.example.com. 3600 IN SOA . . 0 0 0 0 0";
+    EXPECT_THROW(masterLoad(rr_stream, origin, zclass, callback),
+                 MasterLoadError);
+}
+
+// Load TTL with units
+TEST_F(MasterLoadTest, loadUnitTTL) {
+    stringstream rr_stream2("example.com. 1D IN A 192.0.2.1");
+    masterLoad(rr_stream2, origin, zclass, callback);
+    EXPECT_EQ(1, results.size());
+    EXPECT_EQ(0, results[0]->getRdataIterator()->getCurrent().compare(
+                  *rdata::createRdata(RRType::A(), zclass, "192.0.2.1")));
+}
+
+TEST_F(MasterLoadTest, loadBadRRText) {
+    rr_stream << "example..com. 3600 IN A 192.0.2.1"; // bad owner name
+    EXPECT_THROW(masterLoad(rr_stream, origin, zclass, callback),
+                 MasterLoadError);
+
+    // bad RR class text
+    stringstream rr_stream3("example.com. 3600 BAD A 192.0.2.1");
+    EXPECT_THROW(masterLoad(rr_stream3, origin, zclass, callback),
+                 MasterLoadError);
+
+    // bad RR type text
+    stringstream rr_stream4("example.com. 3600 IN BAD 192.0.2.1");
+    EXPECT_THROW(masterLoad(rr_stream4, origin, zclass, callback),
+                 MasterLoadError);
+
+    // bad RDATA text
+    stringstream rr_stream5("example.com. 3600 IN A 2001:db8::1");
+    EXPECT_THROW(masterLoad(rr_stream5, origin, zclass, callback),
+                 MasterLoadError);
+
+    // incomplete RR text
+    stringstream rr_stream6("example.com. 3600 IN A");
+    EXPECT_THROW(masterLoad(rr_stream6, origin, zclass, callback),
+                 MasterLoadError);
+}
+
+// This is a helper callback to test the case the input stream becomes bad
+// in the middle of processing.
+class StreamInvalidator {
+public:
+    StreamInvalidator(stringstream& ss) : ss_(ss) {}
+    void operator()(ConstRRsetPtr) {
+        ss_.setstate(ios::badbit);
+    }
+private:
+    stringstream& ss_;
+};
+
+TEST_F(MasterLoadTest, loadBadStream) {
+    rr_stream << txt_rr << a_rr1;
+    StreamInvalidator invalidator(rr_stream);
+    EXPECT_THROW(masterLoad(rr_stream, origin, zclass, invalidator),
+                 MasterLoadError);
+}
+
+TEST_F(MasterLoadTest, loadFromFile) {
+    // The main parser is shared with the stream version, so we simply test
+    // file I/O specific parts.
+    masterLoad(TEST_DATA_SRCDIR "/masterload.txt", origin, zclass, callback);
+    ASSERT_EQ(2, results.size());
+    EXPECT_EQ(txt_rr, results[0]->toText());
+    EXPECT_EQ(string(a_rr1) + string(a_rr2), results[1]->toText());
+
+    // NULL file name.  Should result in exception.
+    EXPECT_THROW(masterLoad(NULL, origin, zclass, callback), MasterLoadError);
+
+    // Non existent file name.  Ditto.
+    EXPECT_THROW(masterLoad(TEST_DATA_BUILDDIR "/nonexistent.txt", origin,
+                            zclass, callback), MasterLoadError);
+}
+} // end namespace
diff --git a/src/lib/dns/tests/message_unittest.cc b/src/lib/dns/tests/message_unittest.cc
new file mode 100644
index 0000000..8b6832b
--- /dev/null
+++ b/src/lib/dns/tests/message_unittest.cc
@@ -0,0 +1,1162 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <fstream>
+
+#include <boost/scoped_ptr.hpp>
+
+#include <exceptions/exceptions.h>
+
+#include <util/buffer.h>
+#include <util/time_utilities.h>
+
+#include <util/unittests/testdata.h>
+#include <util/unittests/textdata.h>
+
+#include <dns/edns.h>
+#include <dns/exceptions.h>
+#include <dns/message.h>
+#include <dns/messagerenderer.h>
+#include <dns/question.h>
+#include <dns/opcode.h>
+#include <dns/rcode.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrttl.h>
+#include <dns/rrtype.h>
+#include <dns/tsig.h>
+#include <dns/tsigkey.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+//
+// Note: we need more tests, including:
+// parsing malformed headers
+// more complete tests about parsing/rendering header flags, opcode, rcode, etc.
+// tests for adding RRsets
+// tests for RRset/Question iterators
+// But, we'll ship with the current set of tests for now, partly because many
+// of the above are covered as part of other tests, and partly due to time
+// limitation.  We also expect to revisit the fundamental design of the Message
+// class, at which point we'll also revise the tests including more cases.
+//
+
+const uint16_t Message::DEFAULT_MAX_UDPSIZE;
+
+namespace isc {
+namespace util {
+namespace detail {
+extern int64_t (*gettimeFunction)();
+}
+}
+}
+
+// XXX: this is defined as class static constants, but some compilers
+// seemingly cannot find the symbol when used in the EXPECT_xxx macros.
+const uint16_t TSIGContext::DEFAULT_FUDGE;
+
+namespace {
+class MessageTest : public ::testing::Test {
+protected:
+    MessageTest() : test_name("test.example.com"), obuffer(0),
+                    message_parse(Message::PARSE),
+                    message_render(Message::RENDER),
+                    bogus_section(static_cast<Message::Section>(
+                                      Message::SECTION_ADDITIONAL + 1)),
+                    tsig_ctx(TSIGKey("www.example.com:"
+                                     "SFuWd/q99SzF8Yzd1QbB9g=="))
+    {
+        rrset_a = RRsetPtr(new RRset(test_name, RRClass::IN(),
+                                     RRType::A(), RRTTL(3600)));
+        rrset_a->addRdata(in::A("192.0.2.1"));
+        rrset_a->addRdata(in::A("192.0.2.2"));
+
+        rrset_aaaa = RRsetPtr(new RRset(test_name, RRClass::IN(),
+                                        RRType::AAAA(), RRTTL(3600)));
+        rrset_aaaa->addRdata(in::AAAA("2001:db8::1234"));
+
+        rrset_rrsig = RRsetPtr(new RRset(test_name, RRClass::IN(),
+                                        RRType::RRSIG(), RRTTL(3600)));
+        rrset_rrsig->addRdata(generic::RRSIG("AAAA 5 3 7200 20100322084538 "
+                                             "20100220084538 1 example.com. "
+                                             "FAKEFAKEFAKEFAKE"));
+        rrset_aaaa->addRRsig(rrset_rrsig);
+    }
+
+    static Question factoryFromFile(const char* datafile);
+    const Name test_name;
+    OutputBuffer obuffer;
+    MessageRenderer renderer;
+    Message message_parse;
+    Message message_render;
+    const Message::Section bogus_section;
+    RRsetPtr rrset_a;           // A RRset with two RDATAs
+    RRsetPtr rrset_aaaa;        // AAAA RRset with one RDATA with RRSIG
+    RRsetPtr rrset_rrsig;       // RRSIG for the AAAA RRset
+    TSIGContext tsig_ctx;
+    vector<unsigned char> received_data;
+    vector<unsigned char> expected_data;
+
+    void factoryFromFile(Message& message, const char* datafile,
+                         Message::ParseOptions options =
+                         Message::PARSE_DEFAULT);
+};
+
+void
+MessageTest::factoryFromFile(Message& message, const char* datafile,
+                             Message::ParseOptions options)
+{
+    received_data.clear();
+    UnitTestUtil::readWireData(datafile, received_data);
+
+    InputBuffer buffer(&received_data[0], received_data.size());
+    message.fromWire(buffer, options);
+}
+
+TEST_F(MessageTest, headerFlag) {
+    // by default no flag is set
+    EXPECT_FALSE(message_render.getHeaderFlag(Message::HEADERFLAG_QR));
+    EXPECT_FALSE(message_render.getHeaderFlag(Message::HEADERFLAG_AA));
+    EXPECT_FALSE(message_render.getHeaderFlag(Message::HEADERFLAG_TC));
+    EXPECT_FALSE(message_render.getHeaderFlag(Message::HEADERFLAG_RD));
+    EXPECT_FALSE(message_render.getHeaderFlag(Message::HEADERFLAG_RA));
+    EXPECT_FALSE(message_render.getHeaderFlag(Message::HEADERFLAG_AD));
+    EXPECT_FALSE(message_render.getHeaderFlag(Message::HEADERFLAG_CD));
+
+    // set operation: by default it will be on
+    message_render.setHeaderFlag(Message::HEADERFLAG_QR);
+    EXPECT_TRUE(message_render.getHeaderFlag(Message::HEADERFLAG_QR));
+
+    // it can be set to on explicitly, too
+    message_render.setHeaderFlag(Message::HEADERFLAG_AA, true);
+    EXPECT_TRUE(message_render.getHeaderFlag(Message::HEADERFLAG_AA));
+
+    // the bit can also be cleared
+    message_render.setHeaderFlag(Message::HEADERFLAG_AA, false);
+    EXPECT_FALSE(message_render.getHeaderFlag(Message::HEADERFLAG_AA));
+
+    // Invalid flag values
+    EXPECT_THROW(message_render.setHeaderFlag(
+                     static_cast<Message::HeaderFlag>(0)), InvalidParameter);
+    EXPECT_THROW(message_render.setHeaderFlag(
+                     static_cast<Message::HeaderFlag>(0x7000)),
+                 InvalidParameter);
+    EXPECT_THROW(message_render.setHeaderFlag(
+                     static_cast<Message::HeaderFlag>(0x0800)),
+                 InvalidParameter);
+    EXPECT_THROW(message_render.setHeaderFlag(
+                     static_cast<Message::HeaderFlag>(0x0040)),
+                 InvalidParameter);
+    EXPECT_THROW(message_render.setHeaderFlag(
+                     static_cast<Message::HeaderFlag>(0x10000)),
+                 InvalidParameter);
+    EXPECT_THROW(message_render.setHeaderFlag(
+                     static_cast<Message::HeaderFlag>(0x80000000)),
+                 InvalidParameter);
+
+    // set operation isn't allowed in the parse mode.
+    EXPECT_THROW(message_parse.setHeaderFlag(Message::HEADERFLAG_QR),
+                 InvalidMessageOperation);
+}
+TEST_F(MessageTest, getEDNS) {
+    EXPECT_FALSE(message_parse.getEDNS()); // by default EDNS isn't set
+
+    factoryFromFile(message_parse, "message_fromWire10.wire");
+    EXPECT_TRUE(message_parse.getEDNS());
+    EXPECT_EQ(0, message_parse.getEDNS()->getVersion());
+    EXPECT_EQ(4096, message_parse.getEDNS()->getUDPSize());
+    EXPECT_TRUE(message_parse.getEDNS()->getDNSSECAwareness());
+}
+
+TEST_F(MessageTest, setEDNS) {
+    // setEDNS() isn't allowed in the parse mode
+    EXPECT_THROW(message_parse.setEDNS(EDNSPtr(new EDNS())),
+                 InvalidMessageOperation);
+
+    EDNSPtr edns = EDNSPtr(new EDNS());
+    message_render.setEDNS(edns);
+    EXPECT_EQ(edns, message_render.getEDNS());
+}
+
+TEST_F(MessageTest, fromWireWithTSIG) {
+    // Initially there should be no TSIG
+    EXPECT_EQ(static_cast<void*>(NULL), message_parse.getTSIGRecord());
+
+    // getTSIGRecord() is only valid in the parse mode.
+    EXPECT_THROW(message_render.getTSIGRecord(), InvalidMessageOperation);
+
+    factoryFromFile(message_parse, "message_toWire2.wire");
+    const uint8_t expected_mac[] = {
+        0x22, 0x70, 0x26, 0xad, 0x29, 0x7b, 0xee, 0xe7,
+        0x21, 0xce, 0x6c, 0x6f, 0xff, 0x1e, 0x9e, 0xf3
+    };
+    const TSIGRecord* tsig_rr = message_parse.getTSIGRecord();
+    ASSERT_NE(static_cast<void*>(NULL), tsig_rr);
+    EXPECT_EQ(Name("www.example.com"), tsig_rr->getName());
+    EXPECT_EQ(85, tsig_rr->getLength()); // see TSIGRecordTest.getLength
+    EXPECT_EQ(TSIGKey::HMACMD5_NAME(), tsig_rr->getRdata().getAlgorithm());
+    EXPECT_EQ(0x4da8877a, tsig_rr->getRdata().getTimeSigned());
+    EXPECT_EQ(TSIGContext::DEFAULT_FUDGE, tsig_rr->getRdata().getFudge());
+    matchWireData(expected_mac, sizeof(expected_mac),
+                  tsig_rr->getRdata().getMAC(),
+                  tsig_rr->getRdata().getMACSize());
+    EXPECT_EQ(0, tsig_rr->getRdata().getError());
+    EXPECT_EQ(0, tsig_rr->getRdata().getOtherLen());
+    EXPECT_EQ(static_cast<void*>(NULL), tsig_rr->getRdata().getOtherData());
+
+    // If we clear the message for reuse, the recorded TSIG will be cleared.
+    message_parse.clear(Message::PARSE);
+    EXPECT_EQ(static_cast<void*>(NULL), message_parse.getTSIGRecord());
+}
+
+TEST_F(MessageTest, fromWireWithTSIGCompressed) {
+    // Mostly same as fromWireWithTSIG, but the TSIG owner name is compressed.
+    factoryFromFile(message_parse, "message_fromWire12.wire");
+    const TSIGRecord* tsig_rr = message_parse.getTSIGRecord();
+    ASSERT_NE(static_cast<void*>(NULL), tsig_rr);
+    EXPECT_EQ(Name("www.example.com"), tsig_rr->getName());
+    // len(www.example.com) = 17, but when fully compressed, the length is
+    // 2 bytes.  So the length of the record should be 15 bytes shorter.
+    EXPECT_EQ(70, tsig_rr->getLength());
+}
+
+TEST_F(MessageTest, fromWireWithBadTSIG) {
+    // Multiple TSIG RRs
+    EXPECT_THROW(factoryFromFile(message_parse, "message_fromWire13.wire"),
+                 DNSMessageFORMERR);
+    message_parse.clear(Message::PARSE);
+
+    // TSIG in the answer section (must be in additional)
+    EXPECT_THROW(factoryFromFile(message_parse, "message_fromWire14.wire"),
+                 DNSMessageFORMERR);
+    message_parse.clear(Message::PARSE);
+
+    // TSIG is not the last record.
+    EXPECT_THROW(factoryFromFile(message_parse, "message_fromWire15.wire"),
+                 DNSMessageFORMERR);
+    message_parse.clear(Message::PARSE);
+
+    // Unexpected RR Class (this will fail in constructing TSIGRecord)
+    EXPECT_THROW(factoryFromFile(message_parse, "message_fromWire16.wire"),
+                 DNSMessageFORMERR);
+}
+
+TEST_F(MessageTest, getRRCount) {
+    // by default all counters should be 0
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_QUESTION));
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_ANSWER));
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_AUTHORITY));
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_ADDITIONAL));
+
+    message_render.addQuestion(Question(Name("test.example.com"),
+                                        RRClass::IN(), RRType::A()));
+    EXPECT_EQ(1, message_render.getRRCount(Message::SECTION_QUESTION));
+
+    // rrset_a contains two RRs
+    message_render.addRRset(Message::SECTION_ANSWER, rrset_a);
+    EXPECT_EQ(2, message_render.getRRCount(Message::SECTION_ANSWER));
+
+    // parse a message containing a Question and EDNS OPT RR.
+    // OPT shouldn't be counted as normal RR, so result of getRRCount
+    // shouldn't change.
+    factoryFromFile(message_parse, "message_fromWire11.wire");
+    EXPECT_EQ(1, message_render.getRRCount(Message::SECTION_QUESTION));
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_ADDITIONAL));
+
+    // out-of-band section ID
+    EXPECT_THROW(message_parse.getRRCount(bogus_section), OutOfRange);
+}
+
+TEST_F(MessageTest, addRRset) {
+    // initially, we have 0
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_ANSWER));
+
+    // add two A RRs (unsigned)
+    message_render.addRRset(Message::SECTION_ANSWER, rrset_a);
+    EXPECT_EQ(rrset_a,
+              *message_render.beginSection(Message::SECTION_ANSWER));
+    EXPECT_EQ(2, message_render.getRRCount(Message::SECTION_ANSWER));
+
+    message_render.clear(Message::RENDER);
+
+    // add one AAAA RR (signed)
+    message_render.addRRset(Message::SECTION_ANSWER, rrset_aaaa);
+    EXPECT_EQ(rrset_aaaa,
+              *message_render.beginSection(Message::SECTION_ANSWER));
+    EXPECT_EQ(2, message_render.getRRCount(Message::SECTION_ANSWER));
+}
+
+TEST_F(MessageTest, badAddRRset) {
+    // addRRset() isn't allowed in the parse mode.
+    EXPECT_THROW(message_parse.addRRset(Message::SECTION_ANSWER,
+                                        rrset_a), InvalidMessageOperation);
+    // out-of-band section ID
+    EXPECT_THROW(message_render.addRRset(bogus_section, rrset_a), OutOfRange);
+
+    // NULL RRset
+    EXPECT_THROW(message_render.addRRset(Message::SECTION_ANSWER, RRsetPtr()),
+                 InvalidParameter);
+}
+
+TEST_F(MessageTest, hasRRset) {
+    message_render.addRRset(Message::SECTION_ANSWER, rrset_a);
+    EXPECT_TRUE(message_render.hasRRset(Message::SECTION_ANSWER, test_name,
+                                        RRClass::IN(), RRType::A()));
+    // section doesn't match
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_ADDITIONAL, test_name,
+                                         RRClass::IN(), RRType::A()));
+    // name doesn't match
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_ANSWER,
+                                         Name("nomatch.example"),
+                                         RRClass::IN(), RRType::A()));
+    // RR class doesn't match
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_ANSWER, test_name,
+                                        RRClass::CH(), RRType::A()));
+    // RR type doesn't match
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_ANSWER, test_name,
+                                        RRClass::IN(), RRType::AAAA()));
+
+    // out-of-band section ID
+    EXPECT_THROW(message_render.hasRRset(bogus_section, test_name,
+                                         RRClass::IN(), RRType::A()),
+                 OutOfRange);
+
+    // Repeat the checks having created an RRset of the appropriate type.
+
+    RRsetPtr rrs1(new RRset(test_name, RRClass::IN(), RRType::A(), RRTTL(60)));
+    EXPECT_TRUE(message_render.hasRRset(Message::SECTION_ANSWER, rrs1));
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_ADDITIONAL, rrs1));
+
+    RRsetPtr rrs2(new RRset(Name("nomatch.example"), RRClass::IN(), RRType::A(),
+        RRTTL(5)));
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_ANSWER, rrs2));
+
+    RRsetPtr rrs3(new RRset(test_name, RRClass::CH(), RRType::A(), RRTTL(60)));
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_ANSWER, rrs3));
+
+    RRsetPtr rrs4(new RRset(test_name, RRClass::IN(), RRType::AAAA(), RRTTL(5)));
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_ANSWER, rrs4));
+
+    RRsetPtr rrs5(new RRset(test_name, RRClass::IN(), RRType::AAAA(), RRTTL(5)));
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_ANSWER, rrs4));
+
+    EXPECT_THROW(message_render.hasRRset(bogus_section, rrs1), OutOfRange);
+}
+
+TEST_F(MessageTest, removeRRset) {
+    message_render.addRRset(Message::SECTION_ANSWER, rrset_a);
+    message_render.addRRset(Message::SECTION_ANSWER, rrset_aaaa);
+    EXPECT_TRUE(message_render.hasRRset(Message::SECTION_ANSWER, test_name,
+        RRClass::IN(), RRType::A()));
+    EXPECT_TRUE(message_render.hasRRset(Message::SECTION_ANSWER, test_name,
+        RRClass::IN(), RRType::AAAA()));
+    EXPECT_EQ(4, message_render.getRRCount(Message::SECTION_ANSWER));
+
+    // Locate the AAAA RRset and remove it and any associated RRSIGs
+    RRsetIterator i = message_render.beginSection(Message::SECTION_ANSWER);
+    if ((*i)->getType() == RRType::A()) {
+        ++i;
+    }
+    EXPECT_EQ(RRType::AAAA(), (*i)->getType());
+    message_render.removeRRset(Message::SECTION_ANSWER, i);
+
+    EXPECT_TRUE(message_render.hasRRset(Message::SECTION_ANSWER, test_name,
+        RRClass::IN(), RRType::A()));
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_ANSWER, test_name,
+        RRClass::IN(), RRType::AAAA()));
+    EXPECT_EQ(2, message_render.getRRCount(Message::SECTION_ANSWER));
+}
+
+TEST_F(MessageTest, clearQuestionSection) {
+    QuestionPtr q(new Question(Name("www.example.com"), RRClass::IN(),
+                               RRType::A()));
+    message_render.addQuestion(q);
+    ASSERT_EQ(1, message_render.getRRCount(Message::SECTION_QUESTION));
+
+    message_render.clearSection(Message::SECTION_QUESTION);
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_QUESTION));
+    EXPECT_TRUE(message_render.beginQuestion() ==
+                message_render.endQuestion());
+}
+
+
+TEST_F(MessageTest, clearAnswerSection) {
+    // Add two RRsets, check they are present, clear the section,
+    // check if they are gone.
+    message_render.addRRset(Message::SECTION_ANSWER, rrset_a);
+    message_render.addRRset(Message::SECTION_ANSWER, rrset_aaaa);
+    ASSERT_TRUE(message_render.hasRRset(Message::SECTION_ANSWER, test_name,
+        RRClass::IN(), RRType::A()));
+    ASSERT_TRUE(message_render.hasRRset(Message::SECTION_ANSWER, test_name,
+        RRClass::IN(), RRType::AAAA()));
+    ASSERT_EQ(4, message_render.getRRCount(Message::SECTION_ANSWER));
+
+    message_render.clearSection(Message::SECTION_ANSWER);
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_ANSWER, test_name,
+        RRClass::IN(), RRType::A()));
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_ANSWER, test_name,
+        RRClass::IN(), RRType::AAAA()));
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_ANSWER));
+}
+
+TEST_F(MessageTest, clearAuthoritySection) {
+    // Add two RRsets, check they are present, clear the section,
+    // check if they are gone.
+    message_render.addRRset(Message::SECTION_AUTHORITY, rrset_a);
+    message_render.addRRset(Message::SECTION_AUTHORITY, rrset_aaaa);
+    ASSERT_TRUE(message_render.hasRRset(Message::SECTION_AUTHORITY, test_name,
+        RRClass::IN(), RRType::A()));
+    ASSERT_TRUE(message_render.hasRRset(Message::SECTION_AUTHORITY, test_name,
+        RRClass::IN(), RRType::AAAA()));
+    ASSERT_EQ(4, message_render.getRRCount(Message::SECTION_AUTHORITY));
+
+    message_render.clearSection(Message::SECTION_AUTHORITY);
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_AUTHORITY, test_name,
+        RRClass::IN(), RRType::A()));
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_AUTHORITY, test_name,
+        RRClass::IN(), RRType::AAAA()));
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_AUTHORITY));
+}
+
+TEST_F(MessageTest, clearAdditionalSection) {
+    // Add two RRsets, check they are present, clear the section,
+    // check if they are gone.
+    message_render.addRRset(Message::SECTION_ADDITIONAL, rrset_a);
+    message_render.addRRset(Message::SECTION_ADDITIONAL, rrset_aaaa);
+    ASSERT_TRUE(message_render.hasRRset(Message::SECTION_ADDITIONAL, test_name,
+        RRClass::IN(), RRType::A()));
+    ASSERT_TRUE(message_render.hasRRset(Message::SECTION_ADDITIONAL, test_name,
+        RRClass::IN(), RRType::AAAA()));
+    ASSERT_EQ(4, message_render.getRRCount(Message::SECTION_ADDITIONAL));
+
+    message_render.clearSection(Message::SECTION_ADDITIONAL);
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_ADDITIONAL, test_name,
+        RRClass::IN(), RRType::A()));
+    EXPECT_FALSE(message_render.hasRRset(Message::SECTION_ADDITIONAL, test_name,
+        RRClass::IN(), RRType::AAAA()));
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_ADDITIONAL));
+}
+
+TEST_F(MessageTest, badClearSection) {
+    // attempt of clearing a message in the parse mode.
+    EXPECT_THROW(message_parse.clearSection(Message::SECTION_QUESTION),
+                 InvalidMessageOperation);
+    // attempt of clearing out-of-range section
+    EXPECT_THROW(message_render.clearSection(bogus_section), OutOfRange);
+}
+
+TEST_F(MessageTest, badBeginSection) {
+    // valid cases are tested via other tests
+    EXPECT_THROW(message_render.beginSection(Message::SECTION_QUESTION),
+                 InvalidMessageSection);
+    EXPECT_THROW(message_render.beginSection(bogus_section), OutOfRange);
+}
+
+TEST_F(MessageTest, badEndSection) {
+    // valid cases are tested via other tests
+    EXPECT_THROW(message_render.endSection(Message::SECTION_QUESTION),
+                 InvalidMessageSection);
+    EXPECT_THROW(message_render.endSection(bogus_section), OutOfRange);
+}
+
+TEST_F(MessageTest, appendSection) {
+    Message target(Message::RENDER);
+
+    // Section check
+    EXPECT_THROW(target.appendSection(bogus_section, message_render),
+                 OutOfRange);
+
+    // Make sure nothing is copied if there is nothing to copy
+    target.appendSection(Message::SECTION_QUESTION, message_render);
+    EXPECT_EQ(0, target.getRRCount(Message::SECTION_QUESTION));
+    target.appendSection(Message::SECTION_ANSWER, message_render);
+    EXPECT_EQ(0, target.getRRCount(Message::SECTION_ANSWER));
+    target.appendSection(Message::SECTION_AUTHORITY, message_render);
+    EXPECT_EQ(0, target.getRRCount(Message::SECTION_AUTHORITY));
+    target.appendSection(Message::SECTION_ADDITIONAL, message_render);
+    EXPECT_EQ(0, target.getRRCount(Message::SECTION_ADDITIONAL));
+
+    // Now add some data, copy again, and see if it got added
+    message_render.addQuestion(Question(Name("test.example.com"),
+                                        RRClass::IN(), RRType::A()));
+    message_render.addRRset(Message::SECTION_ANSWER, rrset_a);
+    message_render.addRRset(Message::SECTION_AUTHORITY, rrset_a);
+    message_render.addRRset(Message::SECTION_ADDITIONAL, rrset_a);
+    message_render.addRRset(Message::SECTION_ADDITIONAL, rrset_aaaa);
+
+    target.appendSection(Message::SECTION_QUESTION, message_render);
+    EXPECT_EQ(1, target.getRRCount(Message::SECTION_QUESTION));
+
+    target.appendSection(Message::SECTION_ANSWER, message_render);
+    EXPECT_EQ(2, target.getRRCount(Message::SECTION_ANSWER));
+    EXPECT_TRUE(target.hasRRset(Message::SECTION_ANSWER, test_name,
+        RRClass::IN(), RRType::A()));
+
+    target.appendSection(Message::SECTION_AUTHORITY, message_render);
+    EXPECT_EQ(2, target.getRRCount(Message::SECTION_AUTHORITY));
+    EXPECT_TRUE(target.hasRRset(Message::SECTION_AUTHORITY, test_name,
+        RRClass::IN(), RRType::A()));
+
+    target.appendSection(Message::SECTION_ADDITIONAL, message_render);
+    EXPECT_EQ(4, target.getRRCount(Message::SECTION_ADDITIONAL));
+    EXPECT_TRUE(target.hasRRset(Message::SECTION_ADDITIONAL, test_name,
+        RRClass::IN(), RRType::A()));
+    EXPECT_TRUE(target.hasRRset(Message::SECTION_ADDITIONAL, test_name,
+        RRClass::IN(), RRType::AAAA()));
+
+    // One more test, test to see if the section gets added, not replaced
+    Message source2(Message::RENDER);
+    source2.addRRset(Message::SECTION_ANSWER, rrset_aaaa);
+    target.appendSection(Message::SECTION_ANSWER, source2);
+    EXPECT_EQ(4, target.getRRCount(Message::SECTION_ANSWER));
+    EXPECT_TRUE(target.hasRRset(Message::SECTION_ANSWER, test_name,
+        RRClass::IN(), RRType::A()));
+    EXPECT_TRUE(target.hasRRset(Message::SECTION_ANSWER, test_name,
+        RRClass::IN(), RRType::AAAA()));
+
+}
+
+TEST_F(MessageTest, parseHeader) {
+    received_data.clear();
+    UnitTestUtil::readWireData("message_fromWire1", received_data);
+
+    // parseHeader() isn't allowed in the render mode.
+    InputBuffer buffer(&received_data[0], received_data.size());
+    EXPECT_THROW(message_render.parseHeader(buffer), InvalidMessageOperation);
+
+    message_parse.parseHeader(buffer);
+    EXPECT_EQ(0x1035, message_parse.getQid());
+    EXPECT_EQ(Opcode::QUERY(), message_parse.getOpcode());
+    EXPECT_EQ(Rcode::NOERROR(), message_parse.getRcode());
+    EXPECT_TRUE(message_parse.getHeaderFlag(Message::HEADERFLAG_QR));
+    EXPECT_TRUE(message_parse.getHeaderFlag(Message::HEADERFLAG_AA));
+    EXPECT_FALSE(message_parse.getHeaderFlag(Message::HEADERFLAG_TC));
+    EXPECT_TRUE(message_parse.getHeaderFlag(Message::HEADERFLAG_RD));
+    EXPECT_FALSE(message_parse.getHeaderFlag(Message::HEADERFLAG_RA));
+    EXPECT_FALSE(message_parse.getHeaderFlag(Message::HEADERFLAG_AD));
+    EXPECT_FALSE(message_parse.getHeaderFlag(Message::HEADERFLAG_CD));
+    EXPECT_EQ(1, message_parse.getRRCount(Message::SECTION_QUESTION));
+    EXPECT_EQ(2, message_parse.getRRCount(Message::SECTION_ANSWER));
+    EXPECT_EQ(0, message_parse.getRRCount(Message::SECTION_AUTHORITY));
+    EXPECT_EQ(0, message_parse.getRRCount(Message::SECTION_ADDITIONAL));
+
+    // Only the header part should have been examined.
+    EXPECT_EQ(12, buffer.getPosition()); // 12 = size of the header section
+    EXPECT_TRUE(message_parse.beginQuestion() == message_parse.endQuestion());
+    EXPECT_TRUE(message_parse.beginSection(Message::SECTION_ANSWER) ==
+                message_parse.endSection(Message::SECTION_ANSWER));
+    EXPECT_TRUE(message_parse.beginSection(Message::SECTION_AUTHORITY) ==
+                message_parse.endSection(Message::SECTION_AUTHORITY));
+    EXPECT_TRUE(message_parse.beginSection(Message::SECTION_ADDITIONAL) ==
+                message_parse.endSection(Message::SECTION_ADDITIONAL));
+}
+
+void
+checkMessageFromWire(const Message& message_parse,
+                     const Name& test_name)
+{
+    EXPECT_EQ(0x1035, message_parse.getQid());
+    EXPECT_EQ(Opcode::QUERY(), message_parse.getOpcode());
+    EXPECT_EQ(Rcode::NOERROR(), message_parse.getRcode());
+    EXPECT_TRUE(message_parse.getHeaderFlag(Message::HEADERFLAG_QR));
+    EXPECT_TRUE(message_parse.getHeaderFlag(Message::HEADERFLAG_RD));
+    EXPECT_TRUE(message_parse.getHeaderFlag(Message::HEADERFLAG_AA));
+
+    QuestionPtr q = *message_parse.beginQuestion();
+    EXPECT_EQ(test_name, q->getName());
+    EXPECT_EQ(RRType::A(), q->getType());
+    EXPECT_EQ(RRClass::IN(), q->getClass());
+    EXPECT_EQ(1, message_parse.getRRCount(Message::SECTION_QUESTION));
+    EXPECT_EQ(2, message_parse.getRRCount(Message::SECTION_ANSWER));
+    EXPECT_EQ(0, message_parse.getRRCount(Message::SECTION_AUTHORITY));
+    EXPECT_EQ(0, message_parse.getRRCount(Message::SECTION_ADDITIONAL));
+
+    RRsetPtr rrset = *message_parse.beginSection(Message::SECTION_ANSWER);
+    EXPECT_EQ(test_name, rrset->getName());
+    EXPECT_EQ(RRType::A(), rrset->getType());
+    EXPECT_EQ(RRClass::IN(), rrset->getClass());
+    // TTL should be 3600, even though that of the 2nd RR is 7200
+    EXPECT_EQ(RRTTL(3600), rrset->getTTL());
+    RdataIteratorPtr it = rrset->getRdataIterator();
+    EXPECT_EQ("192.0.2.1", it->getCurrent().toText());
+    it->next();
+    EXPECT_EQ("192.0.2.2", it->getCurrent().toText());
+    it->next();
+    EXPECT_TRUE(it->isLast());
+}
+
+
+TEST_F(MessageTest, fromWire) {
+    // fromWire() isn't allowed in the render mode.
+    EXPECT_THROW(factoryFromFile(message_render, "message_fromWire1"),
+                 InvalidMessageOperation);
+
+    factoryFromFile(message_parse, "message_fromWire1");
+    checkMessageFromWire(message_parse, test_name);
+}
+
+TEST_F(MessageTest, fromWireMultiple) {
+    // Parse from wire multiple times.
+    factoryFromFile(message_parse, "message_fromWire1");
+    factoryFromFile(message_parse, "message_fromWire1");
+    factoryFromFile(message_parse, "message_fromWire1");
+    factoryFromFile(message_parse, "message_fromWire1");
+    checkMessageFromWire(message_parse, test_name);
+
+    // Calling parseHeader() directly before fromWire() should not cause
+    // any problems.
+    received_data.clear();
+    UnitTestUtil::readWireData("message_fromWire1", received_data);
+
+    InputBuffer buffer(&received_data[0], received_data.size());
+    message_parse.parseHeader(buffer);
+    message_parse.fromWire(buffer);
+    message_parse.parseHeader(buffer);
+    message_parse.fromWire(buffer);
+    checkMessageFromWire(message_parse, test_name);
+}
+
+TEST_F(MessageTest, fromWireShortBuffer) {
+    // We trim a valid message (ending with an SOA RR) for one byte.
+    // fromWire() should throw an exception while parsing the trimmed RR.
+    UnitTestUtil::readWireData("message_fromWire22.wire", received_data);
+    InputBuffer buffer(&received_data[0], received_data.size() - 1);
+    EXPECT_THROW(message_parse.fromWire(buffer), InvalidBufferPosition);
+}
+
+TEST_F(MessageTest, fromWireCombineRRs) {
+    // This message contains 3 RRs in the answer section in the order of
+    // A, AAAA, A types.  fromWire() should combine the two A RRs into a
+    // single RRset by default.
+    factoryFromFile(message_parse, "message_fromWire19.wire");
+
+    RRsetIterator it = message_parse.beginSection(Message::SECTION_ANSWER);
+    RRsetIterator it_end = message_parse.endSection(Message::SECTION_ANSWER);
+    ASSERT_TRUE(it != it_end);
+    EXPECT_EQ(RRType::A(), (*it)->getType());
+    EXPECT_EQ(2, (*it)->getRdataCount());
+
+    ++it;
+    ASSERT_TRUE(it != it_end);
+    EXPECT_EQ(RRType::AAAA(), (*it)->getType());
+    EXPECT_EQ(1, (*it)->getRdataCount());
+}
+
+// A helper function for a test pattern commonly used in several tests below.
+void
+preserveRRCheck(const Message& message, Message::Section section) {
+    RRsetIterator it = message.beginSection(section);
+    RRsetIterator it_end = message.endSection(section);
+    ASSERT_TRUE(it != it_end);
+    EXPECT_EQ(RRType::A(), (*it)->getType());
+    EXPECT_EQ(1, (*it)->getRdataCount());
+    EXPECT_EQ("192.0.2.1", (*it)->getRdataIterator()->getCurrent().toText());
+
+    ++it;
+    ASSERT_TRUE(it != it_end);
+    EXPECT_EQ(RRType::AAAA(), (*it)->getType());
+    EXPECT_EQ(1, (*it)->getRdataCount());
+    EXPECT_EQ("2001:db8::1", (*it)->getRdataIterator()->getCurrent().toText());
+
+    ++it;
+    ASSERT_TRUE(it != it_end);
+    EXPECT_EQ(RRType::A(), (*it)->getType());
+    EXPECT_EQ(1, (*it)->getRdataCount());
+    EXPECT_EQ("192.0.2.2", (*it)->getRdataIterator()->getCurrent().toText());
+}
+
+TEST_F(MessageTest, fromWirePreserveAnswer) {
+    // Using the same data as the previous test, but specify the PRESERVE_ORDER
+    // option.  The received order of RRs should be preserved, and each RR
+    // should be stored in a single RRset.
+    factoryFromFile(message_parse, "message_fromWire19.wire",
+                    Message::PRESERVE_ORDER);
+    {
+        SCOPED_TRACE("preserve answer RRs");
+        preserveRRCheck(message_parse, Message::SECTION_ANSWER);
+    }
+}
+
+TEST_F(MessageTest, fromWirePreserveAuthority) {
+    // Same for the previous test, but for the authority section.
+    factoryFromFile(message_parse, "message_fromWire20.wire",
+                    Message::PRESERVE_ORDER);
+    {
+        SCOPED_TRACE("preserve authority RRs");
+        preserveRRCheck(message_parse, Message::SECTION_AUTHORITY);
+    }
+}
+
+TEST_F(MessageTest, fromWirePreserveAdditional) {
+    // Same for the previous test, but for the additional section.
+    factoryFromFile(message_parse, "message_fromWire21.wire",
+                    Message::PRESERVE_ORDER);
+    {
+        SCOPED_TRACE("preserve additional RRs");
+        preserveRRCheck(message_parse, Message::SECTION_ADDITIONAL);
+    }
+}
+
+TEST_F(MessageTest, EDNS0ExtRcode) {
+    // Extended Rcode = BADVERS
+    factoryFromFile(message_parse, "message_fromWire10.wire");
+    EXPECT_EQ(Rcode::BADVERS(), message_parse.getRcode());
+
+    // Maximum extended Rcode
+    message_parse.clear(Message::PARSE);
+    factoryFromFile(message_parse, "message_fromWire11.wire");
+    EXPECT_EQ(0xfff, message_parse.getRcode().getCode());
+}
+
+TEST_F(MessageTest, BadEDNS0) {
+    // OPT RR in the answer section
+    EXPECT_THROW(factoryFromFile(message_parse, "message_fromWire4"),
+                 DNSMessageFORMERR);
+    // multiple OPT RRs (in the additional section)
+    message_parse.clear(Message::PARSE);
+    EXPECT_THROW(factoryFromFile(message_parse, "message_fromWire5"),
+                 DNSMessageFORMERR);
+}
+
+TEST_F(MessageTest, toWire) {
+    message_render.setQid(0x1035);
+    message_render.setOpcode(Opcode::QUERY());
+    message_render.setRcode(Rcode::NOERROR());
+    message_render.setHeaderFlag(Message::HEADERFLAG_QR, true);
+    message_render.setHeaderFlag(Message::HEADERFLAG_RD, true);
+    message_render.setHeaderFlag(Message::HEADERFLAG_AA, true);
+    message_render.addQuestion(Question(Name("test.example.com"), RRClass::IN(),
+                                        RRType::A()));
+    message_render.addRRset(Message::SECTION_ANSWER, rrset_a);
+
+    EXPECT_EQ(1, message_render.getRRCount(Message::SECTION_QUESTION));
+    EXPECT_EQ(2, message_render.getRRCount(Message::SECTION_ANSWER));
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_AUTHORITY));
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_ADDITIONAL));
+
+    message_render.toWire(renderer);
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("message_toWire1", data);
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(MessageTest, toWireSigned) {
+    message_render.setQid(0x75c1);
+    message_render.setOpcode(Opcode::QUERY());
+    message_render.setRcode(Rcode::NOERROR());
+    message_render.setHeaderFlag(Message::HEADERFLAG_QR, true);
+    message_render.setHeaderFlag(Message::HEADERFLAG_RD, true);
+    message_render.setHeaderFlag(Message::HEADERFLAG_AA, true);
+    message_render.addQuestion(Question(Name("test.example.com"), RRClass::IN(),
+                                        RRType::A()));
+
+    rrset_rrsig = RRsetPtr(new RRset(test_name, RRClass::IN(),
+                                     RRType::RRSIG(), RRTTL(3600)));
+    // one signature algorithm (5 = RSA/SHA-1)
+    rrset_rrsig->addRdata(generic::RRSIG("A 5 3 3600 "
+                                         "20000101000000 20000201000000 "
+                                         "12345 example.com. FAKEFAKEFAKE"));
+    // another signature algorithm (3 = DSA/SHA-1)
+    rrset_rrsig->addRdata(generic::RRSIG("A 3 3 3600 "
+                                         "20000101000000 20000201000000 "
+                                         "12345 example.com. FAKEFAKEFAKE"));
+    rrset_a->addRRsig(rrset_rrsig);
+    EXPECT_EQ(2, rrset_a->getRRsigDataCount());
+
+    message_render.addRRset(Message::SECTION_ANSWER, rrset_a);
+
+    EXPECT_EQ(1, message_render.getRRCount(Message::SECTION_QUESTION));
+    EXPECT_EQ(4, message_render.getRRCount(Message::SECTION_ANSWER));
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_AUTHORITY));
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_ADDITIONAL));
+
+    message_render.toWire(renderer);
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("message_toWire6", data);
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(MessageTest, toWireSignedAndTruncated) {
+    message_render.setQid(0x75c1);
+    message_render.setOpcode(Opcode::QUERY());
+    message_render.setRcode(Rcode::NOERROR());
+    message_render.setHeaderFlag(Message::HEADERFLAG_QR, true);
+    message_render.setHeaderFlag(Message::HEADERFLAG_RD, true);
+    message_render.setHeaderFlag(Message::HEADERFLAG_AA, true);
+    message_render.addQuestion(Question(Name("test.example.com"), RRClass::IN(),
+                                        RRType::TXT()));
+
+    RRsetPtr rrset_txt = RRsetPtr(new RRset(test_name, RRClass::IN(),
+                                            RRType::TXT(), RRTTL(3600)));
+    rrset_txt->addRdata(generic::TXT(string(255, 'a')));
+    rrset_txt->addRdata(generic::TXT(string(255, 'b')));
+    rrset_txt->addRdata(generic::TXT(string(255, 'c')));
+    rrset_txt->addRdata(generic::TXT(string(255, 'd')));
+    rrset_txt->addRdata(generic::TXT(string(255, 'e')));
+    rrset_txt->addRdata(generic::TXT(string(255, 'f')));
+    rrset_txt->addRdata(generic::TXT(string(255, 'g')));
+    rrset_txt->addRdata(generic::TXT(string(255, 'h')));
+
+    rrset_rrsig = RRsetPtr(new RRset(test_name, RRClass::IN(),
+                                     RRType::RRSIG(), RRTTL(3600)));
+    // one signature algorithm (5 = RSA/SHA-1)
+    rrset_rrsig->addRdata(generic::RRSIG("TXT 5 3 3600 "
+                                         "20000101000000 20000201000000 "
+                                         "12345 example.com. FAKEFAKEFAKE"));
+    rrset_txt->addRRsig(rrset_rrsig);
+    EXPECT_EQ(1, rrset_txt->getRRsigDataCount());
+
+    message_render.addRRset(Message::SECTION_ANSWER, rrset_txt);
+
+    EXPECT_EQ(1, message_render.getRRCount(Message::SECTION_QUESTION));
+    EXPECT_EQ(9, message_render.getRRCount(Message::SECTION_ANSWER));
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_AUTHORITY));
+    EXPECT_EQ(0, message_render.getRRCount(Message::SECTION_ADDITIONAL));
+
+    message_render.toWire(renderer);
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("message_toWire7", data);
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(MessageTest, toWireInParseMode) {
+    // toWire() isn't allowed in the parse mode.
+    EXPECT_THROW(message_parse.toWire(renderer), InvalidMessageOperation);
+}
+
+// See dnssectime_unittest.cc
+template <int64_t NOW>
+int64_t
+testGetTime() {
+    return (NOW);
+}
+
+// bit-wise constant flags to configure DNS header flags for test
+// messages.
+const unsigned int QR_FLAG = 0x1;
+const unsigned int AA_FLAG = 0x2;
+const unsigned int RD_FLAG = 0x4;
+
+void
+commonTSIGToWireCheck(Message& message, MessageRenderer& renderer,
+                      TSIGContext& tsig_ctx, const char* const expected_file,
+                      unsigned int message_flags = RD_FLAG,
+                      RRType qtype = RRType::A(),
+                      const vector<const char*>* answer_data = NULL)
+{
+    message.setOpcode(Opcode::QUERY());
+    message.setRcode(Rcode::NOERROR());
+    if ((message_flags & QR_FLAG) != 0) {
+        message.setHeaderFlag(Message::HEADERFLAG_QR);
+    }
+    if ((message_flags & AA_FLAG) != 0) {
+        message.setHeaderFlag(Message::HEADERFLAG_AA);
+    }
+    if ((message_flags & RD_FLAG) != 0) {
+        message.setHeaderFlag(Message::HEADERFLAG_RD);
+    }
+    message.addQuestion(Question(Name("www.example.com"), RRClass::IN(),
+                                 qtype));
+
+    if (answer_data != NULL) {
+        RRsetPtr ans_rrset(new RRset(Name("www.example.com"), RRClass::IN(),
+                                     qtype, RRTTL(86400)));
+        for (vector<const char*>::const_iterator it = answer_data->begin();
+             it != answer_data->end();
+             ++it) {
+            ans_rrset->addRdata(createRdata(qtype, RRClass::IN(), *it));
+        }
+        message.addRRset(Message::SECTION_ANSWER, ans_rrset);
+    }
+
+    message.toWire(renderer, &tsig_ctx);
+    vector<unsigned char> expected_data;
+    UnitTestUtil::readWireData(expected_file, expected_data);
+    matchWireData(&expected_data[0], expected_data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(MessageTest, toWireWithTSIG) {
+    // Rendering a message with TSIG.  Various special cases specific to
+    // TSIG are tested in the tsig tests.  We only check the message contains
+    // a TSIG at the end and the ARCOUNT of the header is updated.
+
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+
+    message_render.setQid(0x2d65);
+
+    {
+        SCOPED_TRACE("Message sign with TSIG");
+        commonTSIGToWireCheck(message_render, renderer, tsig_ctx,
+                              "message_toWire2.wire");
+    }
+}
+
+TEST_F(MessageTest, toWireWithEDNSAndTSIG) {
+    // Similar to the previous test, but with an EDNS before TSIG.
+    // The wire data check will confirm the ordering.
+    isc::util::detail::gettimeFunction = testGetTime<0x4db60d1f>;
+
+    message_render.setQid(0x6cd);
+
+    EDNSPtr edns(new EDNS());
+    edns->setUDPSize(4096);
+    message_render.setEDNS(edns);
+
+    {
+        SCOPED_TRACE("Message sign with TSIG and EDNS");
+        commonTSIGToWireCheck(message_render, renderer, tsig_ctx,
+                              "message_toWire3.wire");
+    }
+}
+
+// Some of the following tests involve truncation.  We use the query name
+// "www.example.com" and some TXT question/answers.  The length of the
+// header and question will be 33 bytes.  If we also try to include a
+// TSIG of the same key name (not compressed) with HMAC-MD5, the TSIG RR
+// will be 85 bytes.
+
+// A long TXT RDATA.  With a fully compressed owner name, the corresponding
+// RR will be 268 bytes.
+const char* const long_txt1 = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcde";
+
+// With a fully compressed owner name, the corresponding RR will be 212 bytes.
+// It should result in truncation even without TSIG (33 + 268 + 212 = 513)
+const char* const long_txt2 = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456";
+
+// With a fully compressed owner name, the corresponding RR will be 127 bytes.
+// So, it can fit in the standard 512 bytes with txt1 and without TSIG, but
+// adding a TSIG would result in truncation (33 + 268 + 127 + 85 = 513)
+const char* const long_txt3 = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef01";
+
+// This is 1 byte shorter than txt3, which will result in a possible longest
+// message containing answer RRs and TSIG.
+const char* const long_txt4 = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0";
+
+// Example output generated by
+// "dig -y www.example.com:SFuWd/q99SzF8Yzd1QbB9g== www.example.com txt
+// QID: 0x22c2
+// Time Signed: 0x00004e179212
+TEST_F(MessageTest, toWireTSIGTruncation) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4e179212>;
+
+    // Verify a validly signed query so that we can use the TSIG context
+
+    factoryFromFile(message_parse, "message_fromWire17.wire");
+    EXPECT_EQ(TSIGError::NOERROR(),
+              tsig_ctx.verify(message_parse.getTSIGRecord(),
+                              &received_data[0], received_data.size()));
+
+    message_render.setQid(0x22c2);
+    vector<const char*> answer_data;
+    answer_data.push_back(long_txt1);
+    answer_data.push_back(long_txt2);
+    {
+        SCOPED_TRACE("Message sign with TSIG and TC bit on");
+        commonTSIGToWireCheck(message_render, renderer, tsig_ctx,
+                              "message_toWire4.wire",
+                              QR_FLAG|AA_FLAG|RD_FLAG,
+                              RRType::TXT(), &answer_data);
+    }
+}
+
+TEST_F(MessageTest, toWireTSIGTruncation2) {
+    // Similar to the previous test, but without TSIG it wouldn't cause
+    // truncation.
+    isc::util::detail::gettimeFunction = testGetTime<0x4e179212>;
+    factoryFromFile(message_parse, "message_fromWire17.wire");
+    EXPECT_EQ(TSIGError::NOERROR(),
+              tsig_ctx.verify(message_parse.getTSIGRecord(),
+                              &received_data[0], received_data.size()));
+
+    message_render.setQid(0x22c2);
+    vector<const char*> answer_data;
+    answer_data.push_back(long_txt1);
+    answer_data.push_back(long_txt3);
+    {
+        SCOPED_TRACE("Message sign with TSIG and TC bit on (2)");
+        commonTSIGToWireCheck(message_render, renderer, tsig_ctx,
+                              "message_toWire4.wire",
+                              QR_FLAG|AA_FLAG|RD_FLAG,
+                              RRType::TXT(), &answer_data);
+    }
+}
+
+TEST_F(MessageTest, toWireTSIGTruncation3) {
+    // Similar to previous ones, but truncation occurs due to too many
+    // Questions (very unusual, but not necessarily illegal).
+
+    // We are going to create a message starting with a standard
+    // header (12 bytes) and multiple questions in the Question
+    // section of the same owner name (changing the RRType, just so
+    // that it would be the form that would be accepted by the BIND 9
+    // parser).  The first Question is 21 bytes in length, and the subsequent
+    // ones are 6 bytes.  We'll also use a TSIG whose size is 85 bytes.
+    // Up to 66 questions can fit in the standard 512-byte buffer
+    // (12 + 21 + 6 * 65 + 85 = 508).  If we try to add one more it would
+    // result in truncation.
+    message_render.setOpcode(Opcode::QUERY());
+    message_render.setRcode(Rcode::NOERROR());
+    for (int i = 1; i <= 67; ++i) {
+        message_render.addQuestion(Question(Name("www.example.com"),
+                                            RRClass::IN(), RRType(i)));
+    }
+    message_render.toWire(renderer, &tsig_ctx);
+
+    // Check the rendered data by parsing it.  We only check it has the
+    // TC bit on, has the correct number of questions, and has a TSIG RR.
+    // Checking the signature wouldn't be necessary for this rare case
+    // scenario.
+    InputBuffer buffer(renderer.getData(), renderer.getLength());
+    message_parse.fromWire(buffer);
+    EXPECT_TRUE(message_parse.getHeaderFlag(Message::HEADERFLAG_TC));
+    // Note that the number of questions are 66, not 67 as we tried to add.
+    EXPECT_EQ(66, message_parse.getRRCount(Message::SECTION_QUESTION));
+    EXPECT_TRUE(message_parse.getTSIGRecord() != NULL);
+}
+
+TEST_F(MessageTest, toWireTSIGNoTruncation) {
+    // A boundary case that shouldn't cause truncation: the resulting
+    // response message with a TSIG will be 512 bytes long.
+    isc::util::detail::gettimeFunction = testGetTime<0x4e17b38d>;
+    factoryFromFile(message_parse, "message_fromWire18.wire");
+    EXPECT_EQ(TSIGError::NOERROR(),
+              tsig_ctx.verify(message_parse.getTSIGRecord(),
+                              &received_data[0], received_data.size()));
+
+    message_render.setQid(0xd6e2);
+    vector<const char*> answer_data;
+    answer_data.push_back(long_txt1);
+    answer_data.push_back(long_txt4);
+    {
+        SCOPED_TRACE("Message sign with TSIG, no truncation");
+        commonTSIGToWireCheck(message_render, renderer, tsig_ctx,
+                              "message_toWire5.wire",
+                              QR_FLAG|AA_FLAG|RD_FLAG,
+                              RRType::TXT(), &answer_data);
+    }
+}
+
+// This is a buggy renderer for testing.  It behaves like the straightforward
+// MessageRenderer, but once it has some data, its setLengthLimit() ignores
+// the given parameter and resets the limit to the current length, making
+// subsequent insertion result in truncation, which would make TSIG RR
+// rendering fail unexpectedly in the test that follows.
+class BadRenderer : public MessageRenderer {
+public:
+    virtual void setLengthLimit(size_t len) {
+        if (getLength() > 0) {
+            MessageRenderer::setLengthLimit(getLength());
+        } else {
+            MessageRenderer::setLengthLimit(len);
+        }
+    }
+};
+
+TEST_F(MessageTest, toWireTSIGLengthErrors) {
+    // specify an unusual short limit that wouldn't be able to hold
+    // the TSIG.
+    renderer.setLengthLimit(tsig_ctx.getTSIGLength() - 1);
+    // Use commonTSIGToWireCheck() only to call toWire() with otherwise valid
+    // conditions.  The checks inside it don't matter because we expect an
+    // exception before any of the checks.
+    EXPECT_THROW(commonTSIGToWireCheck(message_render, renderer, tsig_ctx,
+                                       "message_toWire2.wire"),
+                 InvalidParameter);
+
+    // This one is large enough for TSIG, but the remaining limit isn't
+    // even enough for the Header section.
+    renderer.clear();
+    message_render.clear(Message::RENDER);
+    renderer.setLengthLimit(tsig_ctx.getTSIGLength() + 1);
+    EXPECT_THROW(commonTSIGToWireCheck(message_render, renderer, tsig_ctx,
+                                       "message_toWire2.wire"),
+                 InvalidParameter);
+
+    // Trying to render a message with TSIG using a buggy renderer.
+    BadRenderer bad_renderer;
+    bad_renderer.setLengthLimit(512);
+    message_render.clear(Message::RENDER);
+    EXPECT_THROW(commonTSIGToWireCheck(message_render, bad_renderer, tsig_ctx,
+                                       "message_toWire2.wire"),
+                 Unexpected);
+}
+
+TEST_F(MessageTest, toWireWithoutOpcode) {
+    message_render.setRcode(Rcode::NOERROR());
+    EXPECT_THROW(message_render.toWire(renderer), InvalidMessageOperation);
+}
+
+TEST_F(MessageTest, toWireWithoutRcode) {
+    message_render.setOpcode(Opcode::QUERY());
+    EXPECT_THROW(message_render.toWire(renderer), InvalidMessageOperation);
+}
+
+TEST_F(MessageTest, toText) {
+    // Check toText() output for a typical DNS response with records in
+    // all sections
+
+    factoryFromFile(message_parse, "message_toText1.wire");
+    {
+        SCOPED_TRACE("Message toText test (basic case)");
+        ifstream ifs;
+        unittests::openTestData("message_toText1.txt", ifs);
+        unittests::matchTextData(ifs, message_parse.toText());
+    }
+
+    // Another example with EDNS.  The expected data was slightly modified
+    // from the dig output (other than replacing tabs with a space): adding
+    // a newline after the "OPT PSEUDOSECTION".  This is an intentional change
+    // in our version for better readability.
+    message_parse.clear(Message::PARSE);
+    factoryFromFile(message_parse, "message_toText2.wire");
+    {
+        SCOPED_TRACE("Message toText test with EDNS");
+        ifstream ifs;
+        unittests::openTestData("message_toText2.txt", ifs);
+        unittests::matchTextData(ifs, message_parse.toText());
+    }
+
+    // Another example with TSIG.  The expected data was slightly modified
+    // from the dig output (other than replacing tabs with a space): removing
+    // a redundant white space at the end of TSIG RDATA.  We'd rather consider
+    // it a dig's defect than a feature.
+    message_parse.clear(Message::PARSE);
+    factoryFromFile(message_parse, "message_toText3.wire");
+    {
+        SCOPED_TRACE("Message toText test with TSIG");
+        ifstream ifs;
+        unittests::openTestData("message_toText3.txt", ifs);
+        unittests::matchTextData(ifs, message_parse.toText());
+    }
+}
+
+TEST_F(MessageTest, toTextWithoutOpcode) {
+    message_render.setRcode(Rcode::NOERROR());
+    EXPECT_THROW(message_render.toText(), InvalidMessageOperation);
+}
+
+TEST_F(MessageTest, toTextWithoutRcode) {
+    message_render.setOpcode(Opcode::QUERY());
+    EXPECT_THROW(message_render.toText(), InvalidMessageOperation);
+}
+}
diff --git a/src/lib/dns/tests/messagerenderer_unittest.cc b/src/lib/dns/tests/messagerenderer_unittest.cc
new file mode 100644
index 0000000..c3a53eb
--- /dev/null
+++ b/src/lib/dns/tests/messagerenderer_unittest.cc
@@ -0,0 +1,292 @@
+// Copyright (C) 2009-2017 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <exceptions/exceptions.h>
+#include <util/buffer.h>
+#include <dns/name.h>
+#include <dns/labelsequence.h>
+#include <dns/messagerenderer.h>
+
+#include <dns/tests/unittest_util.h>
+#include <util/unittests/wiredata.h>
+
+#include <gtest/gtest.h>
+
+#include <boost/lexical_cast.hpp>
+
+#include <string>
+#include <vector>
+
+using isc::UnitTestUtil;
+using isc::dns::Name;
+using isc::dns::LabelSequence;
+using isc::dns::MessageRenderer;
+using isc::util::OutputBuffer;
+using boost::lexical_cast;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class MessageRendererTest : public ::testing::Test {
+protected:
+    MessageRendererTest() : expected_size(0) {
+        data16 = (2 << 8) | 3;
+        data32 = (4 << 24) | (5 << 16) | (6 << 8) | 7;
+    }
+    size_t expected_size;
+    uint16_t data16;
+    uint32_t data32;
+    MessageRenderer renderer;
+    std::vector<unsigned char> data;
+    static const uint8_t testdata[5];
+};
+
+const uint8_t MessageRendererTest::testdata[5] = {1, 2, 3, 4, 5};
+
+// The test cases are borrowed from those for the OutputBuffer class.
+TEST_F(MessageRendererTest, writeInteger) {
+    renderer.writeUint16(data16);
+    expected_size += sizeof(data16);
+
+    matchWireData(&testdata[1], sizeof(data16),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(MessageRendererTest, writeName) {
+    UnitTestUtil::readWireData("name_toWire1", data);
+    renderer.writeName(Name("a.example.com."));
+    renderer.writeName(Name("b.example.com."));
+    renderer.writeName(Name("a.example.org."));
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(MessageRendererTest, writeNameInLargeBuffer) {
+    size_t offset = 0x3fff;
+    renderer.skip(offset);
+
+    UnitTestUtil::readWireData("name_toWire2", data);
+    renderer.writeName(Name("a.example.com."));
+    renderer.writeName(Name("a.example.com."));
+    renderer.writeName(Name("b.example.com."));
+    matchWireData(&data[0], data.size(),
+                  static_cast<const uint8_t*>(renderer.getData()) + offset,
+                  renderer.getLength() - offset);
+}
+
+TEST_F(MessageRendererTest, writeNameWithUncompressed) {
+    UnitTestUtil::readWireData("name_toWire3", data);
+    renderer.writeName(Name("a.example.com."));
+    renderer.writeName(Name("b.example.com."), false);
+    renderer.writeName(Name("b.example.com."));
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(MessageRendererTest, writeNamePointerChain) {
+    UnitTestUtil::readWireData("name_toWire4", data);
+    renderer.writeName(Name("a.example.com."));
+    renderer.writeName(Name("b.example.com."));
+    renderer.writeName(Name("b.example.com."));
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(MessageRendererTest, compressMode) {
+    // By default the render performs case insensitive compression.
+    EXPECT_EQ(MessageRenderer::CASE_INSENSITIVE, renderer.getCompressMode());
+
+    // The mode can be explicitly changed.
+    renderer.setCompressMode(MessageRenderer::CASE_SENSITIVE);
+    EXPECT_EQ(MessageRenderer::CASE_SENSITIVE, renderer.getCompressMode());
+    renderer.setCompressMode(MessageRenderer::CASE_INSENSITIVE);
+    EXPECT_EQ(MessageRenderer::CASE_INSENSITIVE, renderer.getCompressMode());
+
+    // The clear() method resets the mode to the default.
+    renderer.setCompressMode(MessageRenderer::CASE_SENSITIVE);
+    renderer.clear();
+    EXPECT_EQ(MessageRenderer::CASE_INSENSITIVE, renderer.getCompressMode());
+}
+
+TEST_F(MessageRendererTest, writeNameCaseCompress) {
+    // By default MessageRenderer performs case insensitive compression.
+
+    UnitTestUtil::readWireData("name_toWire1", data);
+    renderer.writeName(Name("a.example.com."));
+    // this should match the first name in terms of compression:
+    renderer.writeName(Name("b.exAmple.CoM."));
+    renderer.writeName(Name("a.example.org."));
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(MessageRendererTest, writeNameCaseSensitiveCompress) {
+    // name compression in case sensitive manner.  See the data file
+    // description for details.
+    renderer.setCompressMode(MessageRenderer::CASE_SENSITIVE);
+    UnitTestUtil::readWireData("name_toWire5.wire", data);
+    renderer.writeName(Name("a.example.com."));
+    renderer.writeName(Name("b.eXample.com."));
+    renderer.writeName(Name("c.eXample.com."));
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(MessageRendererTest, writeNameMixedCaseCompress) {
+    renderer.setCompressMode(MessageRenderer::CASE_SENSITIVE);
+    UnitTestUtil::readWireData("name_toWire6.wire", data);
+    renderer.writeName(Name("a.example.com."));
+    renderer.writeName(Name("b.eXample.com."));
+
+    // Change the compression mode in the middle of rendering.  This is not
+    // allowed in this implementation.
+    EXPECT_THROW(renderer.setCompressMode(MessageRenderer::CASE_INSENSITIVE),
+                 isc::InvalidParameter);
+
+    // Once the renderer is cleared, it's okay again.
+    renderer.clear();
+    EXPECT_NO_THROW(renderer.setCompressMode(
+                        MessageRenderer::CASE_INSENSITIVE));
+}
+
+TEST_F(MessageRendererTest, writeRootName) {
+    // root name is special: it never causes compression or can (reasonably)
+    // be a compression pointer.  So it makes sense to check this case
+    // explicitly.
+    Name example_name = Name("www.example.com");
+
+    OutputBuffer expected(0);
+    expected.writeUint8(0);     // root name
+    example_name.toWire(expected);
+
+    renderer.writeName(Name("."));
+    renderer.writeName(example_name);
+    matchWireData(static_cast<const uint8_t*>(expected.getData()),
+                  expected.getLength(),
+                  static_cast<const uint8_t*>(renderer.getData()),
+                  renderer.getLength());
+}
+
+TEST_F(MessageRendererTest, writeNameLabelSequence1) {
+    UnitTestUtil::readWireData("name_toWire7", data);
+
+    Name n1("a.example.com");
+    LabelSequence ls1(n1);
+
+    // a.example.com.
+    renderer.writeName(ls1);
+
+    ls1.stripLeft(1);
+
+    // example.com.
+    renderer.writeName(ls1);
+
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(MessageRendererTest, writeNameLabelSequence2) {
+    UnitTestUtil::readWireData("name_toWire8", data);
+
+    Name n1("a.example.com");
+    LabelSequence ls1(n1);
+
+    ls1.stripRight(1);
+
+    // a.example.com (without root .)
+    renderer.writeName(ls1);
+
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(MessageRendererTest, writeNameLabelSequence3) {
+    UnitTestUtil::readWireData("name_toWire9", data);
+
+    Name n1("a.example.com");
+    LabelSequence ls1(n1);
+
+    // a.example.com.
+    renderer.writeName(ls1);
+
+    ls1.stripRight(1);
+
+    // a.example.com (without root .)
+    renderer.writeName(ls1);
+
+    ls1.stripRight(1);
+
+    // a.example
+    renderer.writeName(ls1);
+
+    ls1.stripLeft(1);
+
+    // example
+    renderer.writeName(ls1);
+
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(MessageRendererTest, setBuffer) {
+    OutputBuffer new_buffer(0);
+    renderer.setBuffer(&new_buffer);
+    EXPECT_EQ(0, new_buffer.getLength()); // the buffer should be still empty
+    renderer.writeUint32(42);
+    EXPECT_EQ(sizeof(uint32_t), new_buffer.getLength());
+    EXPECT_EQ(sizeof(uint32_t), renderer.getLength());
+
+    // Change some other internal state for the reset test below.
+    EXPECT_EQ(512, renderer.getLengthLimit());
+    renderer.setLengthLimit(4096);
+    EXPECT_EQ(4096, renderer.getLengthLimit());
+
+    // Reset the buffer to the default again.  Other internal states and
+    // resources should be cleared.  The used buffer should be intact.
+    renderer.setBuffer(NULL);
+    EXPECT_EQ(sizeof(uint32_t), new_buffer.getLength());
+    EXPECT_EQ(0, renderer.getLength());
+    EXPECT_EQ(512, renderer.getLengthLimit());
+}
+
+TEST_F(MessageRendererTest, setBufferErrors) {
+    OutputBuffer new_buffer(0);
+
+    // Buffer cannot be reset when the renderer is in use.
+    renderer.writeUint32(10);
+    EXPECT_THROW(renderer.setBuffer(&new_buffer), isc::InvalidParameter);
+
+    renderer.clear();
+    renderer.setBuffer(&new_buffer);
+    renderer.writeUint32(10);
+    EXPECT_THROW(renderer.setBuffer(&new_buffer), isc::InvalidParameter);
+
+    // Resetting the buffer isn't allowed for the default buffer.
+    renderer.setBuffer(NULL);
+    EXPECT_THROW(renderer.setBuffer(NULL), isc::InvalidParameter);
+
+    // It's okay to reset a temporary buffer without using it.
+    renderer.setBuffer(&new_buffer);
+    EXPECT_NO_THROW(renderer.setBuffer(NULL));
+}
+
+TEST_F(MessageRendererTest, manyRRs) {
+    // Render a large number of names, and the confirm the resulting wire
+    // data store the expected names in the correct order (1000 is an
+    // arbitrary choice).
+    for (size_t i = 0; i < 1000; ++i) {
+        renderer.writeName(Name(lexical_cast<std::string>(i) + ".example"));
+    }
+    isc::util::InputBuffer b(renderer.getData(), renderer.getLength());
+    for (size_t i = 0; i < 1000; ++i) {
+        EXPECT_EQ(Name(lexical_cast<std::string>(i) + ".example"), Name(b));
+    }
+    // This will trigger trimming excessive hash items.  It shouldn't cause
+    // any disruption.
+    EXPECT_NO_THROW(renderer.clear());
+}
+}
diff --git a/src/lib/dns/tests/name_unittest.cc b/src/lib/dns/tests/name_unittest.cc
new file mode 100644
index 0000000..caf1f12
--- /dev/null
+++ b/src/lib/dns/tests/name_unittest.cc
@@ -0,0 +1,797 @@
+// Copyright (C) 2009-2019 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <vector>
+#include <string>
+#include <sstream>
+#include <iomanip>
+#include <limits>
+#include <stdexcept>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/name.h>
+#include <dns/messagerenderer.h>
+
+#include <dns/tests/unittest_util.h>
+#include <util/unittests/wiredata.h>
+
+#include <gtest/gtest.h>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using isc::util::unittests::matchWireData;
+
+//
+// XXX: these are defined as class static constants, but some compilers
+// seemingly cannot find the symbols when used in the EXPECT_xxx macros.
+//
+const size_t Name::MAX_WIRE;
+const size_t Name::MAX_LABELS;
+
+// This is a name of maximum allowed number of labels
+const char* max_labels_str = "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9." // 40
+                             "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9." // 80
+                             "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9." // 120
+                             "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9." // 160
+                             "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9." // 200
+                             "0.1.2.3.4.5.6.7.8.9.0.1.2.3.4.5.6.7.8.9." // 240
+                             "0.1.2.3.4.5.6";
+// This is a name of maximum allowed length
+const char* max_len_str = "123456789.123456789.123456789.123456789.123456789."
+                          "123456789.123456789.123456789.123456789.123456789."
+                          "123456789.123456789.123456789.123456789.123456789."
+                          "123456789.123456789.123456789.123456789.123456789."
+                          "123456789.123456789.123456789.123456789.123456789."
+                          "123";
+
+namespace {
+class NameTest : public ::testing::Test {
+protected:
+    NameTest() : example_name("www.example.com"),
+                 example_name_upper("WWW.EXAMPLE.COM"),
+                 small_name("aaa.example.com"),
+                 large_name("zzz.example.com"),
+                 origin_name("example.com."),
+                 origin_name_upper("EXAMPLE.COM"),
+                 buffer_actual(0), buffer_expected(0)
+    {}
+
+    const Name example_name;
+    Name example_name_upper;    // this will be modified and cannot be const
+    const Name small_name;
+    const Name large_name;
+    const Name origin_name;
+    const Name origin_name_upper;
+    OutputBuffer buffer_actual, buffer_expected;
+
+    //
+    // helper methods
+    //
+    static Name nameFactoryFromWire(const char* datafile, size_t position,
+                                    bool downcase = false);
+    // construct a name including all non-upper-case-alphabet characters.
+    static Name nameFactoryLowerCase();
+    void compareInWireFormat(const Name& name_actual,
+                             const Name& name_expected);
+};
+
+const Name downcased_global("\\255.EXAMPLE.COM", true);
+
+Name
+NameTest::nameFactoryFromWire(const char* datafile, size_t position,
+                              bool downcase)
+{
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData(datafile, data);
+
+    InputBuffer buffer(&data[0], data.size());
+    buffer.setPosition(position);
+
+    return (Name(buffer, downcase));
+}
+
+Name
+NameTest::nameFactoryLowerCase() {
+    string lowercase_namestr;
+    lowercase_namestr.reserve(Name::MAX_WIRE);
+
+    unsigned int ch = 0;
+    unsigned int labelcount = 0;
+    do {
+        if (ch < 'A' || ch > 'Z') {
+            ostringstream ss;
+            ss.setf(ios_base::right, ios_base::adjustfield);
+            ss.width(3);
+            ss << setfill('0') << ch;
+            lowercase_namestr += '\\' + ss.str();
+
+            if (++labelcount == Name::MAX_LABELLEN) {
+                lowercase_namestr.push_back('.');
+                labelcount = 0;
+            }
+        }
+    } while (++ch <= Name::MAX_WIRE);
+
+    return (Name(lowercase_namestr));
+}
+
+void
+NameTest::compareInWireFormat(const Name& name_actual,
+                              const Name& name_expected)
+{
+    buffer_actual.clear();
+    buffer_expected.clear();
+
+    name_actual.toWire(buffer_actual);
+    name_expected.toWire(buffer_expected);
+
+    matchWireData(buffer_expected.getData(), buffer_expected.getLength(),
+                  buffer_actual.getData(), buffer_actual.getLength());
+}
+
+TEST_F(NameTest, nonlocalObject) {
+    // A previous version of code relied on a non local static object for
+    // name construction, so a non local static Name object defined outside
+    // the name module might not be initialized correctly.  This test detects
+    // that kind of bug.
+    EXPECT_EQ("\\255.example.com.", downcased_global.toText());
+}
+
+template <typename ExceptionType>
+void
+checkBadTextName(const string& txt) {
+    // Check it results in the specified type of exception as well as
+    // NameParserException.
+    EXPECT_THROW(Name(txt, false), ExceptionType);
+    EXPECT_THROW(Name(txt, false), NameParserException);
+    // The same is thrown when constructing by the master-file constructor
+    EXPECT_THROW(Name(txt.c_str(), txt.length(), &Name::ROOT_NAME()),
+                 ExceptionType);
+    EXPECT_THROW(Name(txt.c_str(), txt.length(), &Name::ROOT_NAME()),
+                 NameParserException);
+}
+
+TEST_F(NameTest, checkExceptionsHierarchy) {
+    EXPECT_NO_THROW({
+        const isc::dns::EmptyLabel exception("", 0, "");
+        const isc::dns::NameParserException& exception_cast =
+          dynamic_cast<const isc::dns::NameParserException&>(exception);
+        // to avoid compiler warning
+        exception_cast.what();
+    });
+
+    EXPECT_NO_THROW({
+        const isc::dns::TooLongName exception("", 0, "");
+        const isc::dns::NameParserException& exception_cast =
+          dynamic_cast<const isc::dns::NameParserException&>(exception);
+        // to avoid compiler warning
+        exception_cast.what();
+    });
+
+    EXPECT_NO_THROW({
+        const isc::dns::TooLongLabel exception("", 0, "");
+        const isc::dns::NameParserException& exception_cast =
+          dynamic_cast<const isc::dns::NameParserException&>(exception);
+        // to avoid compiler warning
+        exception_cast.what();
+    });
+
+    EXPECT_NO_THROW({
+        const isc::dns::BadLabelType exception("", 0, "");
+        const isc::dns::NameParserException& exception_cast =
+          dynamic_cast<const isc::dns::NameParserException&>(exception);
+        // to avoid compiler warning
+        exception_cast.what();
+    });
+
+    EXPECT_NO_THROW({
+        const isc::dns::BadEscape exception("", 0, "");
+        const isc::dns::NameParserException& exception_cast =
+          dynamic_cast<const isc::dns::NameParserException&>(exception);
+        // to avoid compiler warning
+        exception_cast.what();
+    });
+
+    EXPECT_NO_THROW({
+        const isc::dns::IncompleteName exception("", 0, "");
+        const isc::dns::NameParserException& exception_cast =
+          dynamic_cast<const isc::dns::NameParserException&>(exception);
+        // to avoid compiler warning
+        exception_cast.what();
+    });
+
+    EXPECT_NO_THROW({
+        const isc::dns::MissingNameOrigin exception("", 0, "");
+        const isc::dns::NameParserException& exception_cast =
+          dynamic_cast<const isc::dns::NameParserException&>(exception);
+        // to avoid compiler warning
+        exception_cast.what();
+    });
+}
+
+TEST_F(NameTest, fromText) {
+    vector<string> strnames;
+    strnames.push_back("www.example.com");
+    strnames.push_back("www.example.com."); // with a trailing dot
+    strnames.push_back("wWw.exAmpLe.com");  // mixed cases
+    strnames.push_back("\\wWw.exAmpLe.com"); // escape with a backslash
+    // decimal representation for "WWW"
+    strnames.push_back("\\087\\087\\087.example.com");
+
+    vector<string>::const_iterator it;
+    for (it = strnames.begin(); it != strnames.end(); ++it) {
+        EXPECT_PRED_FORMAT2(UnitTestUtil::matchName, example_name, Name(*it));
+    }
+
+    // root names
+    EXPECT_PRED_FORMAT2(UnitTestUtil::matchName, Name("@"), Name("."));
+
+    // downcase
+    EXPECT_EQ(Name("Www.eXample.coM", true).toText(), example_name.toText());
+
+    //
+    // Tests for bogus names.  These should trigger exceptions.
+    //
+    // empty label cannot be followed by another label
+    checkBadTextName<EmptyLabel>(".a");
+    // duplicate period
+    checkBadTextName<EmptyLabel>("a..");
+    // label length must be < 64
+    checkBadTextName<TooLongLabel>("012345678901234567890123456789"
+                                   "012345678901234567890123456789"
+                                   "0123");
+    // now-unsupported bitstring labels
+    checkBadTextName<BadLabelType>("\\[b11010000011101]");
+    // label length must be < 64
+    checkBadTextName<TooLongLabel>("012345678901234567890123456789"
+                                   "012345678901234567890123456789"
+                                   "012\\x");
+    // but okay as long as resulting len < 64 even if the original string is
+    // "too long"
+    EXPECT_NO_THROW(Name("012345678901234567890123456789"
+                         "012345678901234567890123456789"
+                         "01\\x"));
+    // incomplete \DDD pattern (exactly 3 D's must appear)
+    checkBadTextName<BadEscape>("\\12abc");
+    // \DDD must not exceed 255
+    checkBadTextName<BadEscape>("\\256");
+    // Same tests for \111 as for \\x above
+    checkBadTextName<TooLongLabel>("012345678901234567890123456789"
+                                   "012345678901234567890123456789"
+                                   "012\\111");
+    EXPECT_NO_THROW(Name("012345678901234567890123456789"
+                         "012345678901234567890123456789"
+                         "01\\111"));
+    // A domain name must be 255 octets or less
+    checkBadTextName<TooLongName>("123456789.123456789.123456789.123456789."
+                                  "123456789.123456789.123456789.123456789."
+                                  "123456789.123456789.123456789.123456789."
+                                  "123456789.123456789.123456789.123456789."
+                                  "123456789.123456789.123456789.123456789."
+                                  "123456789.123456789.123456789.123456789."
+                                  "123456789.1234");
+    // This is a possible longest name and should be accepted
+    EXPECT_NO_THROW(Name(string(max_len_str)));
+    // \DDD must consist of 3 digits.
+    checkBadTextName<IncompleteName>("\\12");
+
+    // a name with the max number of labels.  should be constructed without
+    // an error, and its length should be the max value.
+    Name maxlabels = Name(string(max_labels_str));
+    EXPECT_EQ(Name::MAX_LABELS, maxlabels.getLabelCount());
+}
+
+// The following test uses a name data that was produced by
+// fuzz testing and causes an unexpected condition in stringParser.
+// Formerly this condition was trapped by an assert, but for
+// robustness it has been replaced by a throw.
+TEST_F(NameTest, unexpectedParseError) {
+    std::vector<uint8_t> badname  {
+        0xff,0xff,0x7f,0x00,0x00,0x00,0x7f,0x00,0x00,0x00,0x00,
+        0x00,0x00,0x04,0x63,0x82,0x53,0x63,0x35,0x01,0x01,0x3d,0x07,0x01,0x00,0x00,0x00,
+        0x00,0x00,0x00,0x19,0x0c,0x4e,0x01,0x00,0x07,0x08,0x00,0x00,0x00,0x00,0x00,0x00,
+        0x00,0x00,0x00,0x00,0x35,0x01,0x05,0x3a,0x04,0x00,0x00,0x07,0x08,0x3b,0x04,0x00,
+        0x00,0x2e,0x3b,0x04,0x00,0x19,0x2e,0x00,0x00,0x00,0x0a,0x00,0x12,0x00,0x00,0x00,
+        0x00,0x00,0x00,0x00,0x0b,0x82,0x01,0xfc,0x42,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+        0x00,0x00,0x00,0x00,0x00,0x35,0x01,0x05,0x3a,0x04,0x00,0x00,0x07,0x08,0x3b,0x04,
+        0x00,0x00,0x2e,0x3b,0x04,0x00,0x19,0x2e,0x56,0x00,0x00,0x0a,0x00,0x12,0x00,0x00,
+        0x00,0x00,0x00,0x00,0x00,0x0b,0x82,0x01,0xfc,0x42,0x00,0x00,0x00,0x00,0x19,0x0c,
+        0x4e,0x01,0x05,0x3a,0x04,0xde,0x00,0x07,0x08,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+        0x00,0x00,0x00,0x35,0x01,0x05,0x3a,0x07,0x08,0x3b,0x04,0x00,0x00,0x2e,0x3b,0x04,
+        0x00,0x19,0x2e,0x56,0x40,0x00,0x00,0x00,0x00,0x00,0x0a,0x00,0x12,0x00,0x00,0x00,
+        0x00,0x00,0x19,0x00,0x0b,0x82,0x01,0xfc,0x42,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+        0x00,0x00,0x00,0x00,0x00,0xfc,0xff,0xff,0xff,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+        0x00,0x00,0x00,0x00,0x00,0x35,0x01,0x05,0xff,0xff,0x05,0x00,0x07,0x08,0x3b,0x04,
+        0x00,0x00,0x2e,0x3b
+    };
+
+    std::string badnamestr(badname.begin(), badname.end());
+    EXPECT_THROW(Name(badnamestr, false), Unexpected);
+}
+
+// on the rest while we prepare it.
+// Check the @ syntax is accepted and it just copies the origin.
+TEST_F(NameTest, copyOrigin) {
+    EXPECT_EQ(origin_name, Name("@", 1, &origin_name));
+    // The downcase works on the origin too. But only when we provide it.
+    EXPECT_EQ(origin_name, Name("@", 1, &origin_name_upper, true));
+    EXPECT_EQ(origin_name_upper, Name("@", 1, &origin_name_upper, true));
+    // If we don't provide the origin, it throws
+    EXPECT_THROW(Name("@", 1, NULL), MissingNameOrigin);
+}
+
+// Test the master-file constructor does not append the origin when the
+// provided name is absolute
+TEST_F(NameTest, dontAppendOrigin) {
+    EXPECT_EQ(example_name, Name("www.example.com.", 16, &origin_name));
+    // The downcase works (only if provided, though)
+    EXPECT_EQ(example_name, Name("WWW.EXAMPLE.COM.", 16, &origin_name, true));
+    EXPECT_EQ(example_name_upper, Name("WWW.EXAMPLE.COM.", 16, &origin_name));
+    // And it does not require the origin to be provided
+    EXPECT_NO_THROW(Name("www.example.com.", 16, NULL));
+}
+
+// Test the master-file constructor properly appends the origin when
+// the provided name is relative.
+TEST_F(NameTest, appendOrigin) {
+    EXPECT_EQ(example_name, Name("www", 3, &origin_name));
+    // Check the downcase works (if provided)
+    EXPECT_EQ(example_name, Name("WWW", 3, &origin_name, true));
+    EXPECT_EQ(example_name, Name("WWW", 3, &origin_name_upper, true));
+    EXPECT_EQ(example_name_upper, Name("WWW", 3, &origin_name_upper));
+    // Check we can prepend more than one label
+    EXPECT_EQ(Name("a.b.c.d.example.com."), Name("a.b.c.d", 7, &origin_name));
+    // When the name is relative, we throw.
+    EXPECT_THROW(Name("www", 3, NULL), MissingNameOrigin);
+}
+
+// When we don't provide the data, it throws
+TEST_F(NameTest, noDataProvided) {
+    EXPECT_THROW(Name(NULL, 10, NULL), isc::InvalidParameter);
+    EXPECT_THROW(Name(NULL, 10, &origin_name), isc::InvalidParameter);
+    EXPECT_THROW(Name("www", 0, NULL), isc::InvalidParameter);
+    EXPECT_THROW(Name("www", 0, &origin_name), isc::InvalidParameter);
+}
+
+// When we combine the first part and the origin together, the resulting name
+// is too long. It should throw. Other test checks this is valid when alone
+// (without the origin appended).
+TEST_F(NameTest, combinedTooLong) {
+    EXPECT_THROW(Name(max_len_str, strlen(max_len_str), &origin_name),
+                 TooLongName);
+    EXPECT_THROW(Name(max_labels_str, strlen(max_labels_str), &origin_name),
+                 TooLongName);
+    // Appending the root should be OK
+    EXPECT_NO_THROW(Name(max_len_str, strlen(max_len_str),
+                         &Name::ROOT_NAME()));
+    EXPECT_NO_THROW(Name(max_labels_str, strlen(max_labels_str),
+                         &Name::ROOT_NAME()));
+}
+
+// Test the handling of @ in the name. If it is alone, it is the origin (when
+// it exists) or the root. If it is somewhere else, it has no special meaning.
+TEST_F(NameTest, atSign) {
+    // If it is alone, it is the origin
+    EXPECT_EQ(origin_name, Name("@", 1, &origin_name));
+    EXPECT_THROW(Name("@", 1, NULL), MissingNameOrigin);
+    EXPECT_EQ(Name::ROOT_NAME(), Name("@"));
+
+    // It is not alone. It is taken verbatim. We check the name converted
+    // back to the textual form, since checking it against other name object
+    // may be wrong -- if we create it wrong the same way as the tested
+    // object.
+    EXPECT_EQ("\\@.", Name("@.").toText());
+    EXPECT_EQ("\\@.", Name("@.", 2, NULL).toText());
+    EXPECT_EQ("\\@something.", Name("@something").toText());
+    EXPECT_EQ("something\\@.", Name("something@").toText());
+    EXPECT_EQ("\\@x.example.com.", Name("@x", 2, &origin_name).toText());
+    EXPECT_EQ("x\\@.example.com.", Name("x@", 2, &origin_name).toText());
+
+    // An escaped at-sign isn't active
+    EXPECT_EQ("\\@.", Name("\\@").toText());
+    EXPECT_EQ("\\@.example.com.", Name("\\@", 2, &origin_name).toText());
+}
+
+TEST_F(NameTest, fromWire) {
+    //
+    // test cases derived from BIND9 tests.
+    //
+    // normal case with a compression pointer
+    EXPECT_PRED_FORMAT2(UnitTestUtil::matchName,
+                        nameFactoryFromWire("name_fromWire1", 25),
+                        Name("vix.com"));
+    // bogus label character (looks like a local compression pointer)
+    EXPECT_THROW(nameFactoryFromWire("name_fromWire2", 25), DNSMessageFORMERR);
+    // a bad compression pointer (too big)
+    EXPECT_THROW(nameFactoryFromWire("name_fromWire3_1", 25),
+                 DNSMessageFORMERR);
+    // forward reference
+    EXPECT_THROW(nameFactoryFromWire("name_fromWire3_2", 25),
+                 DNSMessageFORMERR);
+    // invalid name length
+    EXPECT_THROW(nameFactoryFromWire("name_fromWire4", 550), DNSMessageFORMERR);
+
+    // skip test for from Wire5.  It's for disabling decompression, but our
+    // implementation always allows it.
+
+    // bad pointer (too big)
+    EXPECT_THROW(nameFactoryFromWire("name_fromWire6", 25), DNSMessageFORMERR);
+    // input ends unexpectedly
+    EXPECT_THROW(nameFactoryFromWire("name_fromWire7", 25), DNSMessageFORMERR);
+    // many hops of compression but valid.  should succeed.
+    EXPECT_PRED_FORMAT2(UnitTestUtil::matchName,
+                        nameFactoryFromWire("name_fromWire8", 383),
+                        Name("vix.com"));
+
+    //
+    // Additional test cases
+    //
+
+    // large names, a long but valid one, and invalid (too long) one.
+    EXPECT_EQ(Name::MAX_WIRE,
+              nameFactoryFromWire("name_fromWire9", 0).getLength());
+    EXPECT_THROW(nameFactoryFromWire("name_fromWire10", 0).getLength(),
+                 DNSMessageFORMERR);
+
+    // A name with possible maximum number of labels; awkward but valid
+    EXPECT_EQ(nameFactoryFromWire("name_fromWire11", 0).getLabelCount(),
+              Name::MAX_LABELS);
+
+    // Wire format including an invalid label length
+    EXPECT_THROW(nameFactoryFromWire("name_fromWire12", 0), DNSMessageFORMERR);
+
+    // converting upper-case letters to down-case
+    EXPECT_EQ("vix.com.",
+              nameFactoryFromWire("name_fromWire1", 25, true).toText());
+    EXPECT_EQ(3, nameFactoryFromWire("name_fromWire1", 25).getLabelCount());
+}
+
+TEST_F(NameTest, copyConstruct) {
+    Name copy(example_name);
+    EXPECT_EQ(copy, example_name);
+
+    // Check the copied data is valid even after the original is deleted
+    Name* copy2 = new Name(example_name);
+    Name copy3(*copy2);
+    delete copy2;
+    EXPECT_EQ(copy3, example_name);
+}
+
+TEST_F(NameTest, assignment) {
+    Name copy(".");
+    copy = example_name;
+    EXPECT_EQ(copy, example_name);
+
+    // Check if the copied data is valid even after the original is deleted
+    Name* copy2 = new Name(example_name);
+    Name copy3(".");
+    copy3 = *copy2;
+    delete copy2;
+    EXPECT_EQ(copy3, example_name);
+
+    // Self assignment
+    copy = *&copy;
+    EXPECT_EQ(example_name, copy);
+}
+
+TEST_F(NameTest, toText) {
+    // tests derived from BIND9
+    EXPECT_EQ("a.b.c.d", Name("a.b.c.d").toText(true));
+    EXPECT_EQ("a.\\\\[[.c.d", Name("a.\\\\[\\[.c.d").toText(true));
+    EXPECT_EQ("a.b.C.d.", Name("a.b.C.d").toText(false));
+    EXPECT_EQ("a.b.", Name("a.b.").toText(false));
+
+    // test omit_final_dot.  It's false by default.
+    EXPECT_EQ("a.b.c.d", Name("a.b.c.d.").toText(true));
+    EXPECT_EQ(Name("a.b.").toText(false), Name("a.b.").toText());
+
+    // the root name is a special case: omit_final_dot will be ignored.
+    EXPECT_EQ(".", Name(".").toText(true));
+
+    // test all printable characters to see whether special characters are
+    // escaped while the others are intact.  note that the conversion is
+    // implementation specific; for example, it's not invalid to escape a
+    // "normal" character such as 'a' with regard to the standard.
+    string all_printable("!\\\"#\\$%&'\\(\\)*+,-\\./0123456789:\\;<=>?\\@"
+                              "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+                              "[\\\\]^_.`abcdefghijklmnopqrstuvwxyz{|}~.");
+    EXPECT_EQ(all_printable,
+              nameFactoryFromWire("name_fromWire13", 0).toText());
+
+    string all_nonprintable(
+        "\\000\\001\\002\\003\\004\\005\\006\\007\\008\\009"
+        "\\010\\011\\012\\013\\014\\015\\016\\017\\018\\019"
+        "\\020\\021\\022\\023\\024\\025\\026\\027\\028\\029"
+        "\\030\\031\\032\\127\\128\\129"
+        "\\130\\131\\132\\133\\134\\135\\136\\137\\138\\139"
+        "\\140\\141\\142\\143\\144\\145\\146\\147\\148\\149"
+        "\\150\\151\\152\\153\\154\\155\\156."
+        "\\157\\158\\159"
+        "\\160\\161\\162\\163\\164\\165\\166\\167\\168\\169"
+        "\\170\\171\\172\\173\\174\\175\\176\\177\\178\\179"
+        "\\180\\181\\182\\183\\184\\185\\186\\187\\188\\189"
+        "\\190\\191\\192\\193\\194\\195\\196\\197\\198\\199"
+        "\\200\\201\\202\\203\\204\\205\\206\\207\\208\\209"
+        "\\210\\211\\212\\213\\214\\215\\216\\217\\218\\219."
+        "\\220\\221\\222\\223\\224\\225\\226\\227\\228\\229"
+        "\\230\\231\\232\\233\\234\\235\\236\\237\\238\\239"
+        "\\240\\241\\242\\243\\244\\245\\246\\247\\248\\249"
+        "\\250\\251\\252\\253\\254\\255.");
+    EXPECT_EQ(all_nonprintable,
+              nameFactoryFromWire("name_fromWire14", 0).toText());
+}
+
+TEST_F(NameTest, toWireBuffer) {
+    vector<unsigned char> data;
+    OutputBuffer buffer(0);
+
+    UnitTestUtil::readWireData(string("01610376697803636f6d00"), data);
+    Name("a.vix.com.").toWire(buffer);
+    matchWireData(&data[0], data.size(),
+                  buffer.getData(), buffer.getLength());
+}
+
+//
+// We test various corner cases in Renderer tests, but add this test case
+// to fill the code coverage gap.
+//
+TEST_F(NameTest, toWireRenderer) {
+    vector<unsigned char> data;
+    MessageRenderer renderer;
+
+    UnitTestUtil::readWireData(string("01610376697803636f6d00"), data);
+    Name("a.vix.com.").toWire(renderer);
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+//
+// Helper class to hold comparison test parameters.
+//
+struct CompareParameters {
+    CompareParameters(const Name& n1, const Name&  n2,
+                      NameComparisonResult::NameRelation r, int o,
+                      unsigned int l) :
+        name1(n1), name2(n2), reln(r), order(o), labels(l) {}
+    static int normalizeOrder(int o)
+    {
+        if (o > 0) {
+            return (1);
+        } else if (o < 0) {
+            return (-1);
+        }
+        return (0);
+    }
+    Name name1;
+    Name name2;
+    NameComparisonResult::NameRelation reln;
+    int order;
+    unsigned int labels;
+};
+
+TEST_F(NameTest, compare) {
+    vector<CompareParameters> params;
+    params.push_back(CompareParameters(Name("c.d"), Name("a.b.c.d"),
+                                       NameComparisonResult::SUPERDOMAIN,
+                                       -1, 3));
+    params.push_back(CompareParameters(Name("a.b.c.d"), Name("c.d"),
+                                       NameComparisonResult::SUBDOMAIN, 1, 3));
+    params.push_back(CompareParameters(Name("a.b.c.d"), Name("c.d.e.f"),
+                                       NameComparisonResult::COMMONANCESTOR,
+                                       -1, 1));
+    params.push_back(CompareParameters(Name("a.b.c.d"), Name("f.g.c.d"),
+                                       NameComparisonResult::COMMONANCESTOR,
+                                       -1, 3));
+    params.push_back(CompareParameters(Name("a.b.c.d"), Name("A.b.C.d."),
+                                       NameComparisonResult::EQUAL,
+                                       0, 5));
+
+    vector<CompareParameters>::const_iterator it;
+    for (it = params.begin(); it != params.end(); ++it) {
+        NameComparisonResult result = (*it).name1.compare((*it).name2);
+        EXPECT_EQ((*it).reln, result.getRelation());
+        EXPECT_EQ((*it).order,
+                  CompareParameters::normalizeOrder(result.getOrder()));
+        EXPECT_EQ((*it).labels, result.getCommonLabels());
+    }
+}
+
+TEST_F(NameTest, equal) {
+    EXPECT_TRUE(example_name == Name("WWW.EXAMPLE.COM."));
+    EXPECT_TRUE(example_name.equals(Name("WWW.EXAMPLE.COM.")));
+    EXPECT_TRUE(example_name != Name("www.example.org."));
+    EXPECT_TRUE(example_name.nequals(Name("www.example.org.")));
+    // lengths don't match
+    EXPECT_TRUE(example_name != Name("www2.example.com."));
+    EXPECT_TRUE(example_name.nequals(Name("www2.example.com.")));
+    // lengths are equal, but # of labels don't match (first test checks the
+    // prerequisite).
+    EXPECT_EQ(example_name.getLength(), Name("www\\.example.com.").getLength());
+    EXPECT_TRUE(example_name != Name("www\\.example.com."));
+    EXPECT_TRUE(example_name.nequals(Name("www\\.example.com.")));
+}
+
+TEST_F(NameTest, isWildcard) {
+    EXPECT_FALSE(example_name.isWildcard());
+    EXPECT_TRUE(Name("*.a.example.com").isWildcard());
+    EXPECT_FALSE(Name("a.*.example.com").isWildcard());
+}
+
+TEST_F(NameTest, concatenate) {
+    NameComparisonResult result =
+        Name("aaa.www.example.com.").compare(Name("aaa").concatenate(example_name));
+    EXPECT_EQ(NameComparisonResult::EQUAL, result.getRelation());
+
+    result = example_name.compare(Name(".").concatenate(example_name));
+    EXPECT_EQ(NameComparisonResult::EQUAL, result.getRelation());
+
+    result = example_name.compare(example_name.concatenate(Name(".")));
+    EXPECT_EQ(NameComparisonResult::EQUAL, result.getRelation());
+
+    // concatenating two valid names would result in too long a name.
+    Name n1("123456789.123456789.123456789.123456789.123456789."
+            "123456789.123456789.123456789.123456789.123456789."
+            "123456789.123456789.123456789.123456789.123456789.");
+    Name n2("123456789.123456789.123456789.123456789.123456789."
+            "123456789.123456789.123456789.123456789.123456789."
+            "1234.");
+    EXPECT_THROW(n1.concatenate(n2), TooLongName);
+}
+
+TEST_F(NameTest, reverse) {
+    EXPECT_PRED_FORMAT2(UnitTestUtil::matchName, example_name.reverse(),
+                        Name("com.example.www."));
+    EXPECT_PRED_FORMAT2(UnitTestUtil::matchName, Name(".").reverse(),
+                        Name("."));
+    EXPECT_PRED_FORMAT2(UnitTestUtil::matchName,
+                        Name("a.b.c.d.e.f.g.h.i.j.k.l.m.n.o.p.q.r.s").reverse(),
+                        Name("s.r.q.p.o.n.m.l.k.j.i.h.g.f.e.d.c.b.a"));
+}
+
+TEST_F(NameTest, split) {
+    // normal cases with or without explicitly specifying the trailing dot.
+    EXPECT_PRED_FORMAT2(UnitTestUtil::matchName, example_name.split(1, 2),
+                        Name("example.com."));
+    EXPECT_PRED_FORMAT2(UnitTestUtil::matchName, example_name.split(1, 3),
+                        Name("example.com."));
+    // edge cases: only the first or last label.
+    EXPECT_PRED_FORMAT2(UnitTestUtil::matchName, example_name.split(0, 1),
+                        Name("www."));
+    EXPECT_PRED_FORMAT2(UnitTestUtil::matchName, example_name.split(3, 1),
+                        Name("."));
+    // invalid range: an exception should be thrown.
+    EXPECT_THROW(example_name.split(1, 0), OutOfRange);
+    EXPECT_THROW(example_name.split(2, 3), OutOfRange);
+
+    // invalid range: the following parameters would cause overflow,
+    // bypassing naive validation.
+    EXPECT_THROW(example_name.split(1, numeric_limits<unsigned int>::max()),
+                 OutOfRange);
+}
+
+TEST_F(NameTest, split_for_suffix) {
+    EXPECT_PRED_FORMAT2(UnitTestUtil::matchName, example_name.split(1),
+                        Name("example.com"));
+    EXPECT_PRED_FORMAT2(UnitTestUtil::matchName, example_name.split(0),
+                        example_name);
+    EXPECT_PRED_FORMAT2(UnitTestUtil::matchName, example_name.split(3),
+                        Name("."));
+
+    // Invalid case: the level must be less than the original label count.
+    EXPECT_THROW(example_name.split(4), OutOfRange);
+}
+
+TEST_F(NameTest, downcase) {
+    // usual case: all-upper case name to all-lower case
+    compareInWireFormat(example_name_upper.downcase(), example_name);
+    // confirm that non upper-case characters are intact
+    compareInWireFormat(nameFactoryLowerCase().downcase(),
+                        nameFactoryLowerCase());
+    // confirm the calling object is actually modified
+    example_name_upper.downcase();
+    compareInWireFormat(example_name_upper, example_name);
+}
+
+TEST_F(NameTest, at) {
+    // Confirm at() produces the exact sequence of wire-format name data
+    vector<uint8_t> data;
+
+    for (size_t i = 0; i < example_name.getLength(); i++) {
+        data.push_back(example_name.at(i));
+    }
+
+    example_name.toWire(buffer_expected);
+    matchWireData(&data[0], data.size(),
+                  buffer_expected.getData(), buffer_expected.getLength());
+
+    // Out-of-range access: should trigger an exception.
+    EXPECT_THROW(example_name.at(example_name.getLength()), OutOfRange);
+}
+
+//
+// The following set of tests confirm the result of <=, <, >=, >
+// The test logic is simple, and all tests are just straightforward variations
+// of the first one.
+//
+TEST_F(NameTest, leq) {
+    // small <= large is true
+    EXPECT_TRUE(small_name.leq(large_name));
+    EXPECT_TRUE(small_name <= large_name);
+
+    // small <= small is true
+    EXPECT_TRUE(small_name.leq(small_name));
+    EXPECT_LE(small_name, small_name);
+
+    // large <= small is false
+    EXPECT_FALSE(large_name.leq(small_name));
+    EXPECT_FALSE(large_name <= small_name);
+}
+
+TEST_F(NameTest, geq) {
+    EXPECT_TRUE(large_name.geq(small_name));
+    EXPECT_TRUE(large_name >= small_name);
+
+    EXPECT_TRUE(large_name.geq(large_name));
+    EXPECT_GE(large_name, large_name);
+
+    EXPECT_FALSE(small_name.geq(large_name));
+    EXPECT_FALSE(small_name >= large_name);
+}
+
+TEST_F(NameTest, lthan) {
+    EXPECT_TRUE(small_name.lthan(large_name));
+    EXPECT_TRUE(small_name < large_name);
+
+    EXPECT_FALSE(small_name.lthan(small_name));
+    // cppcheck-suppress duplicateExpression
+    EXPECT_FALSE(small_name < small_name);
+
+    EXPECT_FALSE(large_name.lthan(small_name));
+    EXPECT_FALSE(large_name < small_name);
+}
+
+TEST_F(NameTest, gthan) {
+    EXPECT_TRUE(large_name.gthan(small_name));
+    EXPECT_TRUE(large_name > small_name);
+
+    EXPECT_FALSE(large_name.gthan(large_name));
+    // cppcheck-suppress duplicateExpression
+    EXPECT_FALSE(large_name > large_name);
+
+    EXPECT_FALSE(small_name.gthan(large_name));
+    EXPECT_FALSE(small_name > large_name);
+}
+
+TEST_F(NameTest, constants) {
+    EXPECT_EQ(Name("."), Name::ROOT_NAME());
+}
+
+// test operator<<.  We simply confirm it appends the result of toText().
+TEST_F(NameTest, LeftShiftOperator) {
+    ostringstream oss;
+    oss << example_name;
+    EXPECT_EQ(example_name.toText(), oss.str());
+}
+
+// The following verifies that toRawText() returns a string
+// actual characters in place of escape sequences.  We do not
+// bother with an exhaustive set of tests here as this is
+// not a primary use case.
+TEST_F(NameTest, toRawText) {
+    Name n("a bc.$exa(m)ple.@org");
+    EXPECT_EQ("a bc.$exa(m)ple.@org", n.toRawText(true));
+    EXPECT_EQ("a bc.$exa(m)ple.@org.", n.toRawText(false));
+    // Verify default value of omit parameter is false.
+    EXPECT_EQ("a bc.$exa(m)ple.@org.", n.toRawText());
+}
+
+}
diff --git a/src/lib/dns/tests/nsec3hash_unittest.cc b/src/lib/dns/tests/nsec3hash_unittest.cc
new file mode 100644
index 0000000..b47bb49
--- /dev/null
+++ b/src/lib/dns/tests/nsec3hash_unittest.cc
@@ -0,0 +1,269 @@
+// Copyright (C) 2012-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <string>
+
+#include <gtest/gtest.h>
+
+#include <boost/scoped_ptr.hpp>
+
+#include <dns/nsec3hash.h>
+#include <dns/labelsequence.h>
+#include <dns/rdataclass.h>
+#include <util/encode/hex.h>
+
+using boost::scoped_ptr;
+using namespace std;
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+using namespace isc::util;
+using namespace isc::util::encode;
+
+namespace {
+typedef scoped_ptr<NSEC3Hash> NSEC3HashPtr;
+
+// Commonly used NSEC3 suffix, defined to reduce the amount of typing
+const char* const nsec3_common = "2T7B4G4VSA5SMI47K61MV5BV1A22BOJR A RRSIG";
+
+class NSEC3HashTest : public ::testing::Test {
+protected:
+    NSEC3HashTest() :
+        test_hash(NSEC3Hash::create(generic::NSEC3PARAM("1 0 12 aabbccdd"))),
+        test_hash_nsec3(NSEC3Hash::create(generic::NSEC3
+                                          ("1 0 12 aabbccdd " +
+                                           string(nsec3_common))))
+    {
+        const uint8_t salt[] = {0xaa, 0xbb, 0xcc, 0xdd};
+        test_hash_args.reset(NSEC3Hash::create(1, 12, salt, sizeof(salt)));
+    }
+
+    ~NSEC3HashTest() {
+        // Make sure we reset the hash creator to the default
+        setNSEC3HashCreator(NULL);
+    }
+
+    // An NSEC3Hash object commonly used in tests.  Parameters are borrowed
+    // from the RFC5155 example.  Construction of this object implicitly
+    // checks a successful case of the creation.
+    NSEC3HashPtr test_hash;
+
+    // Similar to test_hash, but created from NSEC3 RR.
+    NSEC3HashPtr test_hash_nsec3;
+
+    // Similar to test_hash, but created from passed args.
+    NSEC3HashPtr test_hash_args;
+};
+
+TEST_F(NSEC3HashTest, unknownAlgorithm) {
+    EXPECT_THROW(NSEC3HashPtr(
+                     NSEC3Hash::create(
+                         generic::NSEC3PARAM("2 0 12 aabbccdd"))),
+                     UnknownNSEC3HashAlgorithm);
+    EXPECT_THROW(NSEC3HashPtr(
+                     NSEC3Hash::create(
+                         generic::NSEC3("2 0 12 aabbccdd " +
+                                        string(nsec3_common)))),
+                     UnknownNSEC3HashAlgorithm);
+
+    const uint8_t salt[] = {0xaa, 0xbb, 0xcc, 0xdd};
+    EXPECT_THROW(NSEC3HashPtr(NSEC3Hash::create(2, 12, salt, sizeof(salt))),
+                 UnknownNSEC3HashAlgorithm);
+}
+
+// Common checks for NSEC3 hash calculation
+void
+calculateCheck(NSEC3Hash& hash) {
+    // A couple of normal cases from the RFC5155 example.
+    EXPECT_EQ("0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+              hash.calculate(Name("example")));
+    EXPECT_EQ("35MTHGPGCU1QG68FAB165KLNSNK3DPVL",
+              hash.calculate(Name("a.example")));
+
+    // Check case-insensitiveness
+    EXPECT_EQ("0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+              hash.calculate(Name("EXAMPLE")));
+
+    // Repeat for the LabelSequence variant.
+
+    // A couple of normal cases from the RFC5155 example.
+    EXPECT_EQ("0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+              hash.calculate(LabelSequence(Name("example"))));
+    EXPECT_EQ("35MTHGPGCU1QG68FAB165KLNSNK3DPVL",
+              hash.calculate(LabelSequence(Name("a.example"))));
+
+    // Check case-insensitiveness
+    EXPECT_EQ("0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+              hash.calculate(LabelSequence(Name("EXAMPLE"))));
+}
+
+TEST_F(NSEC3HashTest, calculate) {
+    {
+        SCOPED_TRACE("calculate check with NSEC3PARAM based hash");
+        calculateCheck(*test_hash);
+    }
+    {
+        SCOPED_TRACE("calculate check with NSEC3 based hash");
+        calculateCheck(*test_hash_nsec3);
+    }
+    {
+        SCOPED_TRACE("calculate check with args based hash");
+        calculateCheck(*test_hash_args);
+    }
+
+    // Some boundary cases: 0-iteration and empty salt.  Borrowed from the
+    // .com zone data.
+    EXPECT_EQ("CK0POJMG874LJREF7EFN8430QVIT8BSM",
+              NSEC3HashPtr(NSEC3Hash::create(generic::NSEC3PARAM("1 0 0 -")))
+              ->calculate(Name("com")));
+    EXPECT_EQ("CK0POJMG874LJREF7EFN8430QVIT8BSM",
+              NSEC3HashPtr(NSEC3Hash::create(generic::NSEC3PARAM("1 0 0 -")))
+              ->calculate(LabelSequence(Name("com"))));
+
+    // Using unusually large iterations, something larger than the 8-bit range.
+    // (expected hash value generated by BIND 9's dnssec-signzone)
+    EXPECT_EQ("COG6A52MJ96MNMV3QUCAGGCO0RHCC2Q3",
+              NSEC3HashPtr(NSEC3Hash::create(
+                               generic::NSEC3PARAM("1 0 256 AABBCCDD")))
+              ->calculate(LabelSequence(Name("example.org"))));
+}
+
+// Common checks for match cases
+template <typename RDATAType>
+void
+matchCheck(NSEC3Hash& hash, const string& postfix) {
+    // If all parameters match, it's considered to be matched.
+    EXPECT_TRUE(hash.match(RDATAType("1 0 12 aabbccdd" + postfix)));
+
+    // Algorithm doesn't match
+    EXPECT_FALSE(hash.match(RDATAType("2 0 12 aabbccdd" + postfix)));
+    // Iterations doesn't match
+    EXPECT_FALSE(hash.match(RDATAType("1 0 1 aabbccdd" + postfix)));
+    // Salt doesn't match
+    EXPECT_FALSE(hash.match(RDATAType("1 0 12 aabbccde" + postfix)));
+    // Salt doesn't match: the other has an empty salt
+    EXPECT_FALSE(hash.match(RDATAType("1 0 12 -" + postfix)));
+    // Flags don't matter
+    EXPECT_TRUE(hash.match(RDATAType("1 1 12 aabbccdd" + postfix)));
+}
+
+TEST_F(NSEC3HashTest, matchWithNSEC3) {
+    {
+        SCOPED_TRACE("match NSEC3PARAM based hash against NSEC3 parameters");
+        matchCheck<generic::NSEC3>(*test_hash, " " + string(nsec3_common));
+    }
+    {
+        SCOPED_TRACE("match NSEC3 based hash against NSEC3 parameters");
+        matchCheck<generic::NSEC3>(*test_hash_nsec3,
+                                   " " + string(nsec3_common));
+    }
+}
+
+TEST_F(NSEC3HashTest, matchWithNSEC3PARAM) {
+    {
+        SCOPED_TRACE("match NSEC3PARAM based hash against NSEC3 parameters");
+        matchCheck<generic::NSEC3PARAM>(*test_hash, "");
+    }
+    {
+        SCOPED_TRACE("match NSEC3 based hash against NSEC3 parameters");
+        matchCheck<generic::NSEC3PARAM>(*test_hash_nsec3, "");
+    }
+}
+
+// A simple faked hash calculator and a dedicated creator for it.
+class TestNSEC3Hash : public NSEC3Hash {
+    virtual string calculate(const Name&) const {
+        return ("00000000000000000000000000000000");
+    }
+    virtual string calculate(const LabelSequence&) const {
+        return ("00000000000000000000000000000000");
+    }
+    virtual bool match(const generic::NSEC3PARAM&) const {
+        return (true);
+    }
+    virtual bool match(const generic::NSEC3&) const {
+        return (true);
+    }
+};
+
+// This faked creator basically creates the faked calculator regardless of
+// the passed NSEC3PARAM or NSEC3.  But if the most significant bit of flags
+// is set, it will behave like the default creator.
+class TestNSEC3HashCreator : public NSEC3HashCreator {
+public:
+    virtual NSEC3Hash* create(const generic::NSEC3PARAM& param) const {
+        if ((param.getFlags() & 0x80) != 0) {
+            return (default_creator_.create(param));
+        }
+        return (new TestNSEC3Hash);
+    }
+    virtual NSEC3Hash* create(const generic::NSEC3& nsec3) const {
+        if ((nsec3.getFlags() & 0x80) != 0) {
+            return (default_creator_.create(nsec3));
+        }
+        return (new TestNSEC3Hash);
+    }
+    virtual NSEC3Hash* create(uint8_t, uint16_t,
+                              const uint8_t*, size_t) const {
+        isc_throw(isc::Unexpected,
+                  "This method is not implemented here.");
+    }
+private:
+    DefaultNSEC3HashCreator default_creator_;
+};
+
+TEST_F(NSEC3HashTest, setCreator) {
+    // Re-check an existing case using the default creator/hash implementation
+    EXPECT_EQ("0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+              test_hash->calculate(Name("example")));
+    EXPECT_EQ("0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+              test_hash->calculate(LabelSequence(Name("example"))));
+
+    // Replace the creator, and confirm the hash values are faked
+    TestNSEC3HashCreator test_creator;
+    setNSEC3HashCreator(&test_creator);
+    // Re-create the hash object with the new creator
+    test_hash.reset(NSEC3Hash::create(generic::NSEC3PARAM("1 0 12 aabbccdd")));
+    EXPECT_EQ("00000000000000000000000000000000",
+              test_hash->calculate(Name("example")));
+    EXPECT_EQ("00000000000000000000000000000000",
+              test_hash->calculate(LabelSequence(Name("example"))));
+    // Same for hash from NSEC3 RDATA
+    test_hash.reset(NSEC3Hash::create(generic::NSEC3
+                                      ("1 0 12 aabbccdd " +
+                                       string(nsec3_common))));
+    EXPECT_EQ("00000000000000000000000000000000",
+              test_hash->calculate(Name("example")));
+    EXPECT_EQ("00000000000000000000000000000000",
+              test_hash->calculate(LabelSequence(Name("example"))));
+
+    // If we set a special flag big (0x80) on creation, it will act like the
+    // default creator.
+    test_hash.reset(NSEC3Hash::create(generic::NSEC3PARAM(
+                                          "1 128 12 aabbccdd")));
+    EXPECT_EQ("0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+              test_hash->calculate(Name("example")));
+    EXPECT_EQ("0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+              test_hash->calculate(LabelSequence(Name("example"))));
+    test_hash.reset(NSEC3Hash::create(generic::NSEC3
+                                      ("1 128 12 aabbccdd " +
+                                       string(nsec3_common))));
+    EXPECT_EQ("0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+              test_hash->calculate(Name("example")));
+    EXPECT_EQ("0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+              test_hash->calculate(LabelSequence(Name("example"))));
+
+    // Reset the creator to default, and confirm that
+    setNSEC3HashCreator(NULL);
+    test_hash.reset(NSEC3Hash::create(generic::NSEC3PARAM("1 0 12 aabbccdd")));
+    EXPECT_EQ("0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+              test_hash->calculate(Name("example")));
+    EXPECT_EQ("0P9MHAVEQVM6T7VBL5LOP2U3T2RP3TOM",
+              test_hash->calculate(LabelSequence(Name("example"))));
+}
+
+} // end namespace
diff --git a/src/lib/dns/tests/opcode_unittest.cc b/src/lib/dns/tests/opcode_unittest.cc
new file mode 100644
index 0000000..9bc60b5
--- /dev/null
+++ b/src/lib/dns/tests/opcode_unittest.cc
@@ -0,0 +1,100 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <vector>
+#include <sstream>
+
+#include <exceptions/exceptions.h>
+
+#include <dns/opcode.h>
+
+#include <gtest/gtest.h>
+
+using namespace std;
+using namespace isc::dns;
+
+namespace {
+TEST(OpcodeTest, construct) {
+    // This test also tests getCode()
+    EXPECT_EQ(0, Opcode(0).getCode());
+    EXPECT_EQ(15, Opcode(Opcode::RESERVED15_CODE).getCode());
+
+    EXPECT_THROW(Opcode(16), isc::OutOfRange);
+}
+
+TEST(OpcodeTest, constants) {
+    // We'll only test arbitrarily chosen subsets of the codes.
+    // This class is quite simple, so it should be suffice.
+
+    EXPECT_EQ(Opcode::QUERY_CODE, Opcode(0).getCode());
+    EXPECT_EQ(Opcode::IQUERY_CODE, Opcode(1).getCode());
+    EXPECT_EQ(Opcode::NOTIFY_CODE, Opcode(4).getCode());
+    EXPECT_EQ(Opcode::UPDATE_CODE, Opcode(5).getCode());
+    EXPECT_EQ(Opcode::RESERVED15_CODE, Opcode(15).getCode());
+
+    EXPECT_EQ(Opcode::QUERY_CODE, Opcode::QUERY().getCode());
+    EXPECT_EQ(Opcode::IQUERY_CODE, Opcode::IQUERY().getCode());
+    EXPECT_EQ(Opcode::NOTIFY_CODE, Opcode::NOTIFY().getCode());
+    EXPECT_EQ(Opcode::UPDATE_CODE, Opcode::UPDATE().getCode());
+    EXPECT_EQ(Opcode::RESERVED15_CODE, Opcode::RESERVED15().getCode());
+}
+
+TEST(OpcodeTest, equal) {
+    EXPECT_TRUE(Opcode::QUERY() == Opcode(Opcode::QUERY_CODE));
+    EXPECT_TRUE(Opcode::QUERY().equals(Opcode(Opcode::QUERY_CODE)));
+    EXPECT_TRUE(Opcode::IQUERY() == Opcode(Opcode::IQUERY_CODE));
+    EXPECT_TRUE(Opcode::IQUERY().equals(Opcode(Opcode::IQUERY_CODE)));
+    EXPECT_TRUE(Opcode::NOTIFY() == Opcode(Opcode::NOTIFY_CODE));
+    EXPECT_TRUE(Opcode::NOTIFY().equals(Opcode(Opcode::NOTIFY_CODE)));
+    EXPECT_TRUE(Opcode::UPDATE() == Opcode(Opcode::UPDATE_CODE));
+    EXPECT_TRUE(Opcode::UPDATE().equals(Opcode(Opcode::UPDATE_CODE)));
+    EXPECT_TRUE(Opcode::RESERVED15() == Opcode(Opcode::RESERVED15()));
+    EXPECT_TRUE(Opcode::RESERVED15().equals(Opcode(Opcode::RESERVED15())));
+}
+
+TEST(OpcodeTest, nequal) {
+    EXPECT_TRUE(Opcode::QUERY() != Opcode::IQUERY());
+    EXPECT_TRUE(Opcode::QUERY().nequals(Opcode::IQUERY()));
+    EXPECT_TRUE(Opcode::NOTIFY() != Opcode(1));
+    EXPECT_TRUE(Opcode::NOTIFY().nequals(Opcode(1)));
+    EXPECT_TRUE(Opcode(10) != Opcode(11));
+    EXPECT_TRUE(Opcode(10).nequals(Opcode(11)));
+}
+
+TEST(OpcodeTest, toText) {
+    vector<const char*> expects;
+    expects.resize(Opcode::RESERVED15_CODE + 1);
+    expects[Opcode::QUERY_CODE] = "QUERY";
+    expects[Opcode::IQUERY_CODE] = "IQUERY";
+    expects[Opcode::STATUS_CODE] = "STATUS";
+    expects[Opcode::RESERVED3_CODE] = "RESERVED3";
+    expects[Opcode::NOTIFY_CODE] = "NOTIFY";
+    expects[Opcode::UPDATE_CODE] = "UPDATE";
+    expects[Opcode::RESERVED6_CODE] = "RESERVED6";
+    expects[Opcode::RESERVED7_CODE] = "RESERVED7";
+    expects[Opcode::RESERVED8_CODE] = "RESERVED8";
+    expects[Opcode::RESERVED9_CODE] = "RESERVED9";
+    expects[Opcode::RESERVED10_CODE] = "RESERVED10";
+    expects[Opcode::RESERVED11_CODE] = "RESERVED11";
+    expects[Opcode::RESERVED12_CODE] = "RESERVED12";
+    expects[Opcode::RESERVED13_CODE] = "RESERVED13";
+    expects[Opcode::RESERVED14_CODE] = "RESERVED14";
+    expects[Opcode::RESERVED15_CODE] = "RESERVED15";
+
+    for (unsigned int i = 0; i <= Opcode::RESERVED15_CODE; ++i) {
+        EXPECT_EQ(expects.at(i), Opcode(i).toText());
+    }
+}
+
+// test operator<<.  We simply confirm it appends the result of toText().
+TEST(OpcodeTest, LeftShiftOperator) {
+    ostringstream oss;
+    oss << Opcode::NOTIFY();
+    EXPECT_EQ(Opcode::NOTIFY().toText(), oss.str());
+}
+}
diff --git a/src/lib/dns/tests/qid_gen_unittest.cc b/src/lib/dns/tests/qid_gen_unittest.cc
new file mode 100644
index 0000000..20a2dfa
--- /dev/null
+++ b/src/lib/dns/tests/qid_gen_unittest.cc
@@ -0,0 +1,39 @@
+// Copyright (C) 2011-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/// \brief Test of QidGenerator
+///
+
+#include <config.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/qid_gen.h>
+
+using namespace isc::dns;
+
+// Tests the operation of the Qid generator
+
+// Check that getInstance returns a singleton
+TEST(QidGenerator, singleton) {
+    QidGenerator& g1 = QidGenerator::getInstance();
+    QidGenerator& g2 = QidGenerator::getInstance();
+
+    EXPECT_TRUE(&g1 == &g2);
+}
+
+TEST(QidGenerator, generate) {
+    // We'll assume that cryptolink's generator is 'good enough', and won't
+    // do full statistical checking here. Let's just call it the xkcd
+    // test (http://xkcd.com/221/), and check if three consecutive
+    // generates are not all the same.
+    uint16_t one, two, three;
+    QidGenerator& gen = QidGenerator::getInstance();
+    one = gen.generateQid();
+    two = gen.generateQid();
+    three = gen.generateQid();
+    ASSERT_FALSE((one == two) && (one == three));
+}
diff --git a/src/lib/dns/tests/question_unittest.cc b/src/lib/dns/tests/question_unittest.cc
new file mode 100644
index 0000000..03d31b1
--- /dev/null
+++ b/src/lib/dns/tests/question_unittest.cc
@@ -0,0 +1,196 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <vector>
+#include <sstream>
+
+#include <exceptions/exceptions.h>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/name.h>
+#include <dns/question.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class QuestionTest : public ::testing::Test {
+protected:
+    QuestionTest() : obuffer(0),
+                     example_name1(Name("foo.example.com")),
+                     example_name2(Name("bar.example.com")),
+                     test_question1(example_name1, RRClass::IN(),
+                                    RRType::NS()),
+                     test_question2(example_name2, RRClass::CH(),
+                                    RRType::A())
+    {}
+    OutputBuffer obuffer;
+    MessageRenderer renderer;
+    Name example_name1;
+    Name example_name2;
+    Question test_question1;
+    Question test_question2;
+    vector<unsigned char> wiredata;
+};
+
+Question
+questionFromWire(const char* datafile, size_t position = 0) {
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData(datafile, data);
+
+    InputBuffer buffer(&data[0], data.size());
+    buffer.setPosition(position);
+
+    return (Question(buffer));
+}
+
+TEST_F(QuestionTest, fromWire) {
+    Question q = questionFromWire("question_fromWire");
+
+    EXPECT_EQ(example_name1, q.getName());
+    EXPECT_EQ(RRClass::IN(), q.getClass());
+    EXPECT_EQ(RRType::NS(), q.getType());
+
+    // owner name of the second Question is compressed.  It's uncommon
+    // (to have multiple questions), but isn't prohibited by the protocol.
+    q = questionFromWire("question_fromWire", 21);
+    EXPECT_EQ(example_name2, q.getName());
+    EXPECT_EQ(RRClass::CH(), q.getClass());
+    EXPECT_EQ(RRType::A(), q.getType());
+
+    // Pathological cases: Corresponding exceptions will be thrown from
+    // the underlying parser.
+    EXPECT_THROW(questionFromWire("question_fromWire", 31), DNSMessageFORMERR);
+    EXPECT_THROW(questionFromWire("question_fromWire", 36), IncompleteRRClass);
+}
+
+TEST_F(QuestionTest, toText) {
+    EXPECT_EQ("foo.example.com. IN NS", test_question1.toText());
+    EXPECT_EQ("bar.example.com. CH A", test_question2.toText());
+
+    EXPECT_EQ("foo.example.com. IN NS", test_question1.toText(false));
+    EXPECT_EQ("bar.example.com. CH A", test_question2.toText(false));
+
+    EXPECT_EQ("foo.example.com. IN NS\n", test_question1.toText(true));
+    EXPECT_EQ("bar.example.com. CH A\n", test_question2.toText(true));
+}
+
+TEST_F(QuestionTest, toWireBuffer) {
+    test_question1.toWire(obuffer);
+    test_question2.toWire(obuffer);
+    UnitTestUtil::readWireData("question_toWire1", wiredata);
+    matchWireData(&wiredata[0], wiredata.size(),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(QuestionTest, toWireRenderer) {
+    test_question1.toWire(renderer);
+    test_question2.toWire(renderer);
+    UnitTestUtil::readWireData("question_toWire2", wiredata);
+    matchWireData(&wiredata[0], wiredata.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(QuestionTest, toWireTruncated) {
+    // If the available length in the renderer is too small, it would require
+    // truncation.  This won't happen in normal cases, but protocol wise it
+    // could still happen if and when we support some (possibly future) opcode
+    // that allows multiple questions.
+
+    // Set the length limit to the qname length so that the whole question
+    // would request truncated
+    renderer.setLengthLimit(example_name1.getLength());
+
+    EXPECT_FALSE(renderer.isTruncated()); // check pre-render condition
+    EXPECT_EQ(0, test_question1.toWire(renderer));
+    EXPECT_TRUE(renderer.isTruncated());
+    EXPECT_EQ(0, renderer.getLength()); // renderer shouldn't have any data
+}
+
+// test operator<<.  We simply confirm it appends the result of toText().
+TEST_F(QuestionTest, LeftShiftOperator) {
+    ostringstream oss;
+    oss << test_question1;
+    EXPECT_EQ(test_question1.toText(), oss.str());
+}
+
+TEST_F(QuestionTest, comparison) {
+    const Name a("a"), b("b");
+    const RRClass in(RRClass::IN()), ch(RRClass::CH());
+    const RRType ns(RRType::NS()), aaaa(RRType::AAAA());
+
+    EXPECT_TRUE(Question(a, in, ns) < Question(a, in, aaaa));
+    EXPECT_FALSE(Question(a, in, aaaa) < Question(a, in, ns));
+
+    EXPECT_TRUE(Question(a, in, ns) < Question(a, ch, ns));
+    EXPECT_FALSE(Question(a, ch, ns) < Question(a, in, ns));
+
+    EXPECT_TRUE(Question(a, in, ns) < Question(a, ch, aaaa));
+    EXPECT_FALSE(Question(a, ch, aaaa) < Question(a, in, ns));
+
+    EXPECT_TRUE(Question(a, in, ns) < Question(b, in, ns));
+    EXPECT_FALSE(Question(a, in, ns) < Question(a, in, ns));
+
+    EXPECT_TRUE(Question(a, in, ns) < Question(b, ch, ns));
+    EXPECT_FALSE(Question(b, ch, ns) < Question(a, in, ns));
+
+    EXPECT_TRUE(Question(a, in, ns) < Question(b, ch, aaaa));
+    EXPECT_FALSE(Question(b, ch, aaaa) < Question(a, in, ns));
+
+    EXPECT_FALSE(Question(a, in, ns) < Question(a, in, ns));
+    EXPECT_FALSE(Question(a, ch, ns) < Question(a, ch, ns));
+    EXPECT_FALSE(Question(b, in, ns) < Question(b, in, ns));
+    EXPECT_FALSE(Question(b, in, aaaa) < Question(b, in, aaaa));
+
+    // Identical questions are equal
+
+    EXPECT_TRUE(Question(a, in, ns) == Question(a, in, ns));
+    EXPECT_FALSE(Question(a, in, ns) != Question(a, in, ns));
+
+    // Components differing by one component are unequal...
+
+    EXPECT_FALSE(Question(b, in, ns) == Question(a, in, ns));
+    EXPECT_TRUE(Question(b, in, ns) != Question(a, in, ns));
+
+    EXPECT_FALSE(Question(a, ch, ns) == Question(a, in, ns));
+    EXPECT_TRUE(Question(a, ch, ns) != Question(a, in, ns));
+
+    EXPECT_FALSE(Question(a, in, aaaa) == Question(a, in, ns));
+    EXPECT_TRUE(Question(a, in, aaaa) != Question(a, in, ns));
+
+    // ... as are those differing by two components
+
+    EXPECT_FALSE(Question(b, ch, ns) == Question(a, in, ns));
+    EXPECT_TRUE(Question(b, ch, ns) != Question(a, in, ns));
+
+    EXPECT_FALSE(Question(b, in, aaaa) == Question(a, in, ns));
+    EXPECT_TRUE(Question(b, in, aaaa) != Question(a, in, ns));
+
+    EXPECT_FALSE(Question(a, ch, aaaa) == Question(a, in, ns));
+    EXPECT_TRUE(Question(a, ch, aaaa) != Question(a, in, ns));
+
+    // ... and question differing by all three
+
+    EXPECT_FALSE(Question(b, ch, aaaa) == Question(a, in, ns));
+    EXPECT_TRUE(Question(b, ch, aaaa) != Question(a, in, ns));
+
+}
+
+}
diff --git a/src/lib/dns/tests/rcode_unittest.cc b/src/lib/dns/tests/rcode_unittest.cc
new file mode 100644
index 0000000..220248f
--- /dev/null
+++ b/src/lib/dns/tests/rcode_unittest.cc
@@ -0,0 +1,126 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <vector>
+#include <sstream>
+
+#include <exceptions/exceptions.h>
+
+#include <dns/rcode.h>
+
+#include <gtest/gtest.h>
+
+using namespace std;
+using namespace isc::dns;
+
+namespace {
+TEST(RcodeTest, constructFromCode) {
+    // Normal cases.  This test also tests getCode()
+    EXPECT_EQ(0, Rcode(0).getCode());
+    EXPECT_EQ(0xfff, Rcode(0xfff).getCode()); // possible max code
+
+    // should fail on attempt of construction with an out of range code
+    EXPECT_THROW(Rcode(0x1000), isc::OutOfRange);
+    EXPECT_THROW(Rcode(0xffff), isc::OutOfRange);
+}
+
+TEST(RcodeTest, constructFromCodePair) {
+    EXPECT_EQ(3, Rcode(Rcode::NXDOMAIN_CODE, 0).getCode());
+    EXPECT_EQ(Rcode::BADVERS_CODE, Rcode(0, 1).getCode());
+    EXPECT_EQ(0xfff, Rcode(0xf, 0xff).getCode());
+    EXPECT_THROW(Rcode(0x10, 0xff), isc::OutOfRange);
+}
+
+TEST(RcodeTest, getExtendedCode) {
+    EXPECT_EQ(0, Rcode::NOERROR().getExtendedCode());
+    EXPECT_EQ(0, Rcode::YXRRSET().getExtendedCode());
+    EXPECT_EQ(1, Rcode::BADVERS().getExtendedCode());
+    EXPECT_EQ(0xab, Rcode(0xabf).getExtendedCode());
+    EXPECT_EQ(0xff, Rcode(0xfff).getExtendedCode());
+}
+
+TEST(RcodeTest, constants) {
+    // We'll only test arbitrarily chosen subsets of the codes.
+    // This class is quite simple, so it should be suffice.
+
+    EXPECT_EQ(Rcode::NOERROR_CODE, Rcode(0).getCode());
+    EXPECT_EQ(Rcode::FORMERR_CODE, Rcode(1).getCode());
+    EXPECT_EQ(Rcode::NOTIMP_CODE, Rcode(4).getCode());
+    EXPECT_EQ(Rcode::REFUSED_CODE, Rcode(5).getCode());
+    EXPECT_EQ(Rcode::RESERVED15_CODE, Rcode(15).getCode());
+    EXPECT_EQ(Rcode::BADVERS_CODE, Rcode(16).getCode());
+
+    EXPECT_EQ(Rcode::NOERROR_CODE, Rcode::NOERROR().getCode());
+    EXPECT_EQ(Rcode::FORMERR_CODE, Rcode::FORMERR().getCode());
+    EXPECT_EQ(Rcode::NOTIMP_CODE, Rcode::NOTIMP().getCode());
+    EXPECT_EQ(Rcode::REFUSED_CODE, Rcode::REFUSED().getCode());
+    EXPECT_EQ(Rcode::RESERVED15_CODE, Rcode::RESERVED15().getCode());
+    EXPECT_EQ(Rcode::BADVERS_CODE, Rcode::BADVERS().getCode());
+}
+
+TEST(RcodeTest, equal) {
+    EXPECT_TRUE(Rcode::NOERROR() == Rcode(Rcode::NOERROR_CODE));
+    EXPECT_TRUE(Rcode::NOERROR().equals(Rcode(Rcode::NOERROR_CODE)));
+    EXPECT_TRUE(Rcode::FORMERR() == Rcode(Rcode::FORMERR_CODE));
+    EXPECT_TRUE(Rcode::FORMERR().equals(Rcode(Rcode::FORMERR_CODE)));
+    EXPECT_TRUE(Rcode::NOTIMP() == Rcode(Rcode::NOTIMP_CODE));
+    EXPECT_TRUE(Rcode::NOTIMP().equals(Rcode(Rcode::NOTIMP_CODE)));
+    EXPECT_TRUE(Rcode::REFUSED() == Rcode(Rcode::REFUSED_CODE));
+    EXPECT_TRUE(Rcode::REFUSED().equals(Rcode(Rcode::REFUSED_CODE)));
+    EXPECT_TRUE(Rcode::RESERVED15() == Rcode(Rcode::RESERVED15()));
+    EXPECT_TRUE(Rcode::RESERVED15().equals(Rcode(Rcode::RESERVED15())));
+    EXPECT_TRUE(Rcode::BADVERS() == Rcode(Rcode::BADVERS_CODE));
+    EXPECT_TRUE(Rcode::BADVERS().equals(Rcode(Rcode::BADVERS_CODE)));
+}
+
+TEST(RcodeTest, nequal) {
+    EXPECT_TRUE(Rcode::NOERROR() != Rcode::FORMERR());
+    EXPECT_TRUE(Rcode::NOERROR().nequals(Rcode::FORMERR()));
+    EXPECT_TRUE(Rcode::NOTIMP() != Rcode(1));
+    EXPECT_TRUE(Rcode::NOTIMP().nequals(Rcode(1)));
+    EXPECT_TRUE(Rcode(10) != Rcode(11));
+    EXPECT_TRUE(Rcode(10).nequals(Rcode(11)));
+}
+
+TEST(RcodeTest, toText) {
+    vector<const char*> expects;
+    expects.resize(Rcode::BADVERS_CODE + 1);
+    expects[Rcode::NOERROR_CODE] = "NOERROR";
+    expects[Rcode::FORMERR_CODE] = "FORMERR";
+    expects[Rcode::SERVFAIL_CODE] = "SERVFAIL";
+    expects[Rcode::NXDOMAIN_CODE] = "NXDOMAIN";
+    expects[Rcode::NOTIMP_CODE] = "NOTIMP";
+    expects[Rcode::REFUSED_CODE] = "REFUSED";
+    expects[Rcode::YXDOMAIN_CODE] = "YXDOMAIN";
+    expects[Rcode::YXRRSET_CODE] = "YXRRSET";
+    expects[Rcode::NXRRSET_CODE] = "NXRRSET";
+    expects[Rcode::NOTAUTH_CODE] = "NOTAUTH";
+    expects[Rcode::NOTZONE_CODE] = "NOTZONE";
+    expects[Rcode::RESERVED11_CODE] = "RESERVED11";
+    expects[Rcode::RESERVED12_CODE] = "RESERVED12";
+    expects[Rcode::RESERVED13_CODE] = "RESERVED13";
+    expects[Rcode::RESERVED14_CODE] = "RESERVED14";
+    expects[Rcode::RESERVED15_CODE] = "RESERVED15";
+    expects[Rcode::BADVERS_CODE] = "BADVERS";
+
+    for (unsigned int i = 0; i <= Rcode::BADVERS_CODE; ++i) {
+        EXPECT_EQ(expects.at(i), Rcode(i).toText());
+    }
+
+    // Non well-known Rcodes
+    EXPECT_EQ("17", Rcode(Rcode::BADVERS().getCode() + 1).toText());
+    EXPECT_EQ("4095", Rcode(Rcode(0xfff)).toText());
+}
+
+// test operator<<.  We simply confirm it appends the result of toText().
+TEST(RcodeTest, LeftShiftOperator) {
+    ostringstream oss;
+    oss << Rcode::SERVFAIL();
+    EXPECT_EQ(Rcode::SERVFAIL().toText(), oss.str());
+}
+}
diff --git a/src/lib/dns/tests/rdata_afsdb_unittest.cc b/src/lib/dns/tests/rdata_afsdb_unittest.cc
new file mode 100644
index 0000000..26c3135
--- /dev/null
+++ b/src/lib/dns/tests/rdata_afsdb_unittest.cc
@@ -0,0 +1,235 @@
+// Copyright (C) 2011-2019 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+const char* const afsdb_text = "1 afsdb.example.com.";
+const char* const afsdb_text2 = "0 root.example.com.";
+const char* const too_long_label("012345678901234567890123456789"
+        "0123456789012345678901234567890123.");
+
+namespace {
+class Rdata_AFSDB_Test : public RdataTest {
+protected:
+    Rdata_AFSDB_Test() :
+        rdata_afsdb(string(afsdb_text)), rdata_afsdb2(string(afsdb_text2))
+    {}
+
+    const generic::AFSDB rdata_afsdb;
+    const generic::AFSDB rdata_afsdb2;
+    vector<uint8_t> expected_wire;
+};
+
+
+TEST_F(Rdata_AFSDB_Test, createFromText) {
+    EXPECT_EQ(1, rdata_afsdb.getSubtype());
+    EXPECT_EQ(Name("afsdb.example.com."), rdata_afsdb.getServer());
+
+    EXPECT_EQ(0, rdata_afsdb2.getSubtype());
+    EXPECT_EQ(Name("root.example.com."), rdata_afsdb2.getServer());
+}
+
+TEST_F(Rdata_AFSDB_Test, badText) {
+    // subtype is too large
+    EXPECT_THROW(const generic::AFSDB rdata_afsdb("99999999 afsdb.example.com."),
+                 InvalidRdataText);
+    // incomplete text
+    EXPECT_THROW(const generic::AFSDB rdata_afsdb("10"), InvalidRdataText);
+    EXPECT_THROW(const generic::AFSDB rdata_afsdb("SPOON"), InvalidRdataText);
+    EXPECT_THROW(const generic::AFSDB rdata_afsdb("1root.example.com."), InvalidRdataText);
+    // number of fields (must be 2) is incorrect
+    EXPECT_THROW(const generic::AFSDB rdata_afsdb("10 afsdb. example.com."),
+                 InvalidRdataText);
+    // No origin and relative
+    EXPECT_THROW(const generic::AFSDB rdata_afsdb("1 afsdb.example.com"),
+                 MissingNameOrigin);
+    // bad name
+    EXPECT_THROW(const generic::AFSDB rdata_afsdb("1 afsdb.example.com." +
+                 string(too_long_label)), TooLongLabel);
+}
+
+TEST_F(Rdata_AFSDB_Test, copy) {
+    const generic::AFSDB rdata_afsdb2(rdata_afsdb);
+    EXPECT_EQ(0, rdata_afsdb.compare(rdata_afsdb2));
+}
+
+TEST_F(Rdata_AFSDB_Test, assignment) {
+    generic::AFSDB copy((string(afsdb_text2)));
+    copy = rdata_afsdb;
+    EXPECT_EQ(0, copy.compare(rdata_afsdb));
+
+    // Check if the copied data is valid even after the original is deleted
+    generic::AFSDB* copy2 = new generic::AFSDB(rdata_afsdb);
+    generic::AFSDB copy3((string(afsdb_text2)));
+    copy3 = *copy2;
+    delete copy2;
+    EXPECT_EQ(0, copy3.compare(rdata_afsdb));
+
+    // Self assignment
+    copy = *&copy;
+    EXPECT_EQ(0, copy.compare(rdata_afsdb));
+}
+
+TEST_F(Rdata_AFSDB_Test, createFromWire) {
+    // uncompressed names
+    EXPECT_EQ(0, rdata_afsdb.compare(
+                  *rdataFactoryFromFile(RRType::AFSDB(), RRClass::IN(),
+                                     "rdata_afsdb_fromWire1.wire")));
+    // compressed name
+    EXPECT_EQ(0, rdata_afsdb.compare(
+                  *rdataFactoryFromFile(RRType::AFSDB(), RRClass::IN(),
+                                     "rdata_afsdb_fromWire2.wire", 13)));
+    // RDLENGTH is too short
+    EXPECT_THROW(rdataFactoryFromFile(RRType::AFSDB(), RRClass::IN(),
+                                     "rdata_afsdb_fromWire3.wire"),
+                 InvalidRdataLength);
+    // RDLENGTH is too long
+    EXPECT_THROW(rdataFactoryFromFile(RRType::AFSDB(), RRClass::IN(),
+                                      "rdata_afsdb_fromWire4.wire"),
+                 InvalidRdataLength);
+    // bogus server name, the error should be detected in the name
+    // constructor
+    EXPECT_THROW(rdataFactoryFromFile(RRType::AFSDB(), RRClass::IN(),
+                                      "rdata_afsdb_fromWire5.wire"),
+                 DNSMessageFORMERR);
+}
+
+TEST_F(Rdata_AFSDB_Test, createFromLexer) {
+    EXPECT_EQ(0, rdata_afsdb.compare(
+        *test::createRdataUsingLexer(RRType::AFSDB(), RRClass::IN(),
+                                     afsdb_text)));
+
+    // test::createRdataUsingLexer() constructs relative to
+    // "example.org." origin.
+    generic::AFSDB tmp = generic::AFSDB("1 afsdb2.example.org.");
+    EXPECT_EQ(0, tmp.compare(
+        *test::createRdataUsingLexer(RRType::AFSDB(), RRClass::IN(),
+                                     "1 afsdb2")));
+
+    // Exceptions cause NULL to be returned.
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::AFSDB(), RRClass::IN(),
+                                             "1root.example.com."));
+
+    // 65536 is larger than maximum possible subtype
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::AFSDB(), RRClass::IN(),
+                                             "65536 afsdb.example.com."));
+
+    // Extra text at end of line
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::AFSDB(), RRClass::IN(),
+                                             "1 afsdb.example.com. extra."));
+}
+
+TEST_F(Rdata_AFSDB_Test, toWireBuffer) {
+    // construct actual data
+    rdata_afsdb.toWire(obuffer);
+
+    // construct expected data
+    UnitTestUtil::readWireData("rdata_afsdb_toWire1.wire", expected_wire);
+
+    // then compare them
+    matchWireData(&expected_wire[0], expected_wire.size(),
+                  obuffer.getData(), obuffer.getLength());
+
+    // clear buffer for the next test
+    obuffer.clear();
+
+    // construct actual data
+    Name("example.com.").toWire(obuffer);
+    rdata_afsdb2.toWire(obuffer);
+
+    // construct expected data
+    UnitTestUtil::readWireData("rdata_afsdb_toWire2.wire", expected_wire);
+
+    // then compare them
+    matchWireData(&expected_wire[0], expected_wire.size(),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_AFSDB_Test, toWireRenderer) {
+    // similar to toWireBuffer, but names in RDATA could be compressed due to
+    // preceding names.  Actually they must not be compressed according to
+    // RFC3597, and this test checks that.
+
+    // construct actual data
+    rdata_afsdb.toWire(renderer);
+
+    // construct expected data
+    UnitTestUtil::readWireData("rdata_afsdb_toWire1.wire", expected_wire);
+
+    // then compare them
+    matchWireData(&expected_wire[0], expected_wire.size(),
+                  renderer.getData(), renderer.getLength());
+
+    // clear renderer for the next test
+    renderer.clear();
+
+    // construct actual data
+    renderer.writeName(Name("example.com."));
+    rdata_afsdb2.toWire(renderer);
+
+    // construct expected data
+    UnitTestUtil::readWireData("rdata_afsdb_toWire2.wire", expected_wire);
+
+    // then compare them
+    matchWireData(&expected_wire[0], expected_wire.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_AFSDB_Test, toText) {
+    EXPECT_EQ(afsdb_text, rdata_afsdb.toText());
+    EXPECT_EQ(afsdb_text2, rdata_afsdb2.toText());
+}
+
+TEST_F(Rdata_AFSDB_Test, compare) {
+    // check reflexivity
+    EXPECT_EQ(0, rdata_afsdb.compare(rdata_afsdb));
+
+    // name must be compared in case-insensitive manner
+    EXPECT_EQ(0, rdata_afsdb.compare(generic::AFSDB("1 "
+                                "AFSDB.example.com.")));
+
+    const generic::AFSDB small1("10 afsdb.example.com.");
+    const generic::AFSDB large1("65535 afsdb.example.com.");
+    const generic::AFSDB large2("256 afsdb.example.com.");
+
+    // confirm these are compared as unsigned values
+    EXPECT_GT(0, rdata_afsdb.compare(large1));
+    EXPECT_LT(0, large1.compare(rdata_afsdb));
+
+    // confirm these are compared in network byte order
+    EXPECT_GT(0, small1.compare(large2));
+    EXPECT_LT(0, large2.compare(small1));
+
+    // another AFSDB whose server name is larger than that of rdata_afsdb.
+    const generic::AFSDB large3("256 zzzzz.example.com.");
+    EXPECT_GT(0, large2.compare(large3));
+    EXPECT_LT(0, large3.compare(large2));
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(rdata_afsdb.compare(*rdata_nomatch), bad_cast);
+}
+}
diff --git a/src/lib/dns/tests/rdata_caa_unittest.cc b/src/lib/dns/tests/rdata_caa_unittest.cc
new file mode 100644
index 0000000..48b9076
--- /dev/null
+++ b/src/lib/dns/tests/rdata_caa_unittest.cc
@@ -0,0 +1,322 @@
+// Copyright (C) 2014-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <algorithm>
+#include <string>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+#include <boost/algorithm/string.hpp>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_CAA_Test : public RdataTest {
+protected:
+    Rdata_CAA_Test() :
+        caa_txt("0 issue \"ca.example.net\""),
+        rdata_caa(caa_txt)
+    {}
+
+    void checkFromText_None(const string& rdata_str) {
+        checkFromText<generic::CAA, isc::Exception, isc::Exception>(
+            rdata_str, rdata_caa, false, false);
+    }
+
+    void checkFromText_InvalidText(const string& rdata_str) {
+        checkFromText<generic::CAA, InvalidRdataText, InvalidRdataText>(
+            rdata_str, rdata_caa, true, true);
+    }
+
+    void checkFromText_LexerError(const string& rdata_str) {
+        checkFromText
+            <generic::CAA, InvalidRdataText, MasterLexer::LexerError>(
+                rdata_str, rdata_caa, true, true);
+    }
+
+    void checkFromText_BadString(const string& rdata_str) {
+        checkFromText
+            <generic::CAA, InvalidRdataText, isc::Exception>(
+                rdata_str, rdata_caa, true, false);
+    }
+
+    const string caa_txt;
+    const generic::CAA rdata_caa;
+};
+
+const uint8_t rdata_caa_wiredata[] = {
+    // flags
+    0x00,
+    // tag length
+    0x5,
+    // tag
+    'i', 's', 's', 'u', 'e',
+    // value
+    'c', 'a', '.', 'e', 'x', 'a', 'm', 'p', 'l', 'e',
+    '.', 'n', 'e', 't'
+};
+
+TEST_F(Rdata_CAA_Test, createFromText) {
+    // Basic test
+    checkFromText_None(caa_txt);
+
+    // With different spacing
+    checkFromText_None("0 issue    \"ca.example.net\"");
+
+    // Combination of lowercase and uppercase
+    checkFromText_None("0 IssUE \"ca.example.net\"");
+
+    // string constructor throws if there's extra text,
+    // but lexer constructor doesn't
+    checkFromText_BadString(caa_txt + "\n" + caa_txt);
+
+    // Missing value field
+    EXPECT_NO_THROW(const generic::CAA rdata_caa2("0 issue"));
+}
+
+TEST_F(Rdata_CAA_Test, fields) {
+    // Some of these may not be RFC conformant, but we relax the check
+    // in our code to work with other field values that may show up in
+    // the future.
+    EXPECT_NO_THROW(const generic::CAA rdata_caa2("1 issue \"ca.example.net\""));
+    EXPECT_NO_THROW(const generic::CAA rdata_caa2("2 issue \"ca.example.net\""));
+    EXPECT_NO_THROW(const generic::CAA rdata_caa2("3 issue \"ca.example.net\""));
+    EXPECT_NO_THROW(const generic::CAA rdata_caa2("128 issue \"ca.example.net\""));
+    EXPECT_NO_THROW(const generic::CAA rdata_caa2("255 issue \"ca.example.net\""));
+
+    EXPECT_NO_THROW(const generic::CAA rdata_caa2("0 foo \"ca.example.net\""));
+    EXPECT_NO_THROW(const generic::CAA rdata_caa2("0 bar \"ca.example.net\""));
+    EXPECT_NO_THROW(const generic::CAA rdata_caa2("0 12345 \"ca.example.net\""));
+    EXPECT_NO_THROW(const generic::CAA rdata_caa2("0 w0x1y2z3 \"ca.example.net\""));
+    EXPECT_NO_THROW(const generic::CAA rdata_caa2("0 relaxed-too \"ca.example.net\""));
+    EXPECT_NO_THROW(const generic::CAA rdata_caa2("0 RELAXED.too \"ca.example.net\""));
+
+    // No value (this is redundant to the last test case in the
+    // .createFromText test
+    EXPECT_NO_THROW(const generic::CAA rdata_caa2("0 issue"));
+
+    // > 255 would be broken
+    EXPECT_THROW(const generic::CAA rdata_caa2("256 issue \"ca.example.net\""),
+                 InvalidRdataText);
+
+    // Missing tag causes the value to be parsed as the tag field. As
+    // the tag field does not allow quoted strings, this throws.
+    EXPECT_THROW(const generic::CAA rdata_caa2("0 \"ca.example.net\""),
+                 InvalidRdataText);
+
+    // Tag is too long
+    const std::string tag(256, 'a');
+    const std::string rdata_txt("0 " + tag + " \"ca.example.net\"");
+    EXPECT_THROW(const generic::CAA rdata_caa2(rdata_txt), InvalidRdataText);
+}
+
+TEST_F(Rdata_CAA_Test, characterStringValue) {
+    const generic::CAA rdata_caa_unquoted("0 issue ca.example.net");
+    EXPECT_EQ(0, rdata_caa_unquoted.compare(rdata_caa));
+
+    const generic::CAA rdata_caa_escape_X("0 issue ca.e\\xample.net");
+    EXPECT_EQ(0, rdata_caa_escape_X.compare(rdata_caa));
+
+    const generic::CAA rdata_caa_escape_DDD("0 issue ca.e\\120ample.net");
+    EXPECT_EQ(0, rdata_caa_escape_DDD.compare(rdata_caa));
+
+    const generic::CAA rdata_caa_multiline("0 issue (\nca.example.net)");
+    EXPECT_EQ(0, rdata_caa_multiline.compare(rdata_caa));
+}
+
+TEST_F(Rdata_CAA_Test, badText) {
+    checkFromText_LexerError("0");
+    checkFromText_LexerError("ZERO issue \"ca.example.net\"");
+    EXPECT_THROW(const generic::CAA rdata_caa2(caa_txt + " extra text"),
+                 InvalidRdataText);
+
+    // Yes, this is redundant to the last test cases in the .fields test
+    checkFromText_InvalidText("2345 issue \"ca.example.net\"");
+
+    // negative values are trapped in the lexer rather than the
+    // constructor
+    checkFromText_LexerError("-2 issue \"ca.example.net\"");
+}
+
+TEST_F(Rdata_CAA_Test, copyAndAssign) {
+    // Copy construct
+    generic::CAA rdata_caa2(rdata_caa);
+    EXPECT_EQ(0, rdata_caa.compare(rdata_caa2));
+
+    // Assignment, mainly to confirm it doesn't cause disruption.
+    rdata_caa2 = rdata_caa;
+    EXPECT_EQ(0, rdata_caa.compare(rdata_caa2));
+}
+
+TEST_F(Rdata_CAA_Test, createFromWire) {
+    // Basic test
+    EXPECT_EQ(0, rdata_caa.compare(
+                  *rdataFactoryFromFile(RRType("CAA"), RRClass("IN"),
+                                        "rdata_caa_fromWire1.wire")));
+
+    // Combination of lowercase and uppercase
+    EXPECT_EQ(0, rdata_caa.compare(
+                  *rdataFactoryFromFile(RRType("CAA"), RRClass("IN"),
+                                        "rdata_caa_fromWire2.wire")));
+
+    // Value field is empty
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType("CAA"), RRClass("IN"),
+                                         "rdata_caa_fromWire3.wire"));
+
+    // Tag field is empty
+    EXPECT_THROW(rdataFactoryFromFile(RRType("CAA"), RRClass("IN"),
+                                      "rdata_caa_fromWire4.wire"),
+                 InvalidRdataText);
+
+    // Value field is shorter than rdata len
+    EXPECT_THROW(rdataFactoryFromFile(RRType("CAA"), RRClass("IN"),
+                                      "rdata_caa_fromWire5"),
+                 InvalidBufferPosition);
+
+    // all RDATA is missing
+    EXPECT_THROW(rdataFactoryFromFile(RRType("CAA"), RRClass("IN"),
+                                      "rdata_caa_fromWire6"),
+                 InvalidBufferPosition);
+}
+
+TEST_F(Rdata_CAA_Test, createFromParams) {
+    const generic::CAA rdata_caa2(0, "issue", "ca.example.net");
+    EXPECT_EQ(0, rdata_caa2.compare(rdata_caa));
+
+    const generic::CAA rdata_caa4(0, "issue", "ca.e\\xample.net");
+    EXPECT_EQ(0, rdata_caa4.compare(rdata_caa));
+
+    const generic::CAA rdata_caa5(0, "issue", "ca.e\\120ample.net");
+    EXPECT_EQ(0, rdata_caa5.compare(rdata_caa));
+
+    // Tag is empty
+    EXPECT_THROW(const generic::CAA rdata_caa3(0, "", "ca.example.net"),
+                 isc::InvalidParameter);
+
+    // Tag is too long
+    const std::string tag(256, 'a');
+    EXPECT_THROW(const generic::CAA rdata_caa3(0, tag, "ca.example.net"),
+                 isc::InvalidParameter);
+
+    // Value is too long
+    const std::string value(65536, 'a');
+    EXPECT_THROW(const generic::CAA rdata_caa3(0, "issue", value),
+                 InvalidRdataLength);
+}
+
+TEST_F(Rdata_CAA_Test, toText) {
+    EXPECT_TRUE(boost::iequals(caa_txt, rdata_caa.toText()));
+
+    const string caa_txt2("1 issue \"\"");
+    const generic::CAA rdata_caa2(caa_txt2);
+    EXPECT_TRUE(boost::iequals(caa_txt2, rdata_caa2.toText()));
+}
+
+TEST_F(Rdata_CAA_Test, toWire) {
+    obuffer.clear();
+    rdata_caa.toWire(obuffer);
+
+    matchWireData(rdata_caa_wiredata, sizeof(rdata_caa_wiredata),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_CAA_Test, compare) {
+    // Equality test is repeated from createFromWire tests above.
+    EXPECT_EQ(0, rdata_caa.compare(
+                  *rdataFactoryFromFile(RRType("CAA"), RRClass("IN"),
+                                        "rdata_caa_fromWire1.wire")));
+
+    const generic::CAA rdata_caa2("1 issue \"ca.example.net\"");
+
+    EXPECT_EQ(1, rdata_caa2.compare(rdata_caa));
+    EXPECT_EQ(-1, rdata_caa.compare(rdata_caa2));
+}
+
+TEST_F(Rdata_CAA_Test, getFlags) {
+    EXPECT_EQ(0, rdata_caa.getFlags());
+}
+
+TEST_F(Rdata_CAA_Test, getTag) {
+    EXPECT_EQ("issue", rdata_caa.getTag());
+}
+
+TEST_F(Rdata_CAA_Test, getValue) {
+    const uint8_t value_data[] = {
+        'c', 'a', '.',
+        'e', 'x', 'a', 'm', 'p', 'l', 'e', '.',
+        'n', 'e', 't'
+    };
+
+    const std::vector<uint8_t>& value = rdata_caa.getValue();
+    matchWireData(value_data, sizeof(value_data),
+                  &value[0], value.size());
+}
+
+TEST_F(Rdata_CAA_Test, emptyValueFromWire) {
+    const uint8_t rdf_wiredata[] = {
+        // flags
+        0x00,
+        // tag length
+        0x5,
+        // tag
+        'i', 's', 's', 'u', 'e'
+    };
+
+    const generic::CAA rdf =
+        dynamic_cast<const generic::CAA&>
+        (*rdataFactoryFromFile(RRType("CAA"), RRClass("IN"),
+                               "rdata_caa_fromWire3.wire"));
+
+    EXPECT_EQ(0, rdf.getFlags());
+    EXPECT_EQ("issue", rdf.getTag());
+
+    obuffer.clear();
+    rdf.toWire(obuffer);
+
+    matchWireData(rdf_wiredata, sizeof(rdf_wiredata),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_CAA_Test, emptyValueFromString) {
+    const generic::CAA rdata_caa2("0 issue");
+    const uint8_t rdata_caa2_wiredata[] = {
+        // flags
+        0x00,
+        // tag length
+        0x5,
+        // tag
+        'i', 's', 's', 'u', 'e'
+    };
+
+    EXPECT_EQ(0, rdata_caa2.getFlags());
+    EXPECT_EQ("issue", rdata_caa2.getTag());
+
+    obuffer.clear();
+    rdata_caa2.toWire(obuffer);
+
+    matchWireData(rdata_caa2_wiredata, sizeof(rdata_caa2_wiredata),
+                  obuffer.getData(), obuffer.getLength());
+}
+}
diff --git a/src/lib/dns/tests/rdata_char_string_data_unittest.cc b/src/lib/dns/tests/rdata_char_string_data_unittest.cc
new file mode 100644
index 0000000..4ffeadb
--- /dev/null
+++ b/src/lib/dns/tests/rdata_char_string_data_unittest.cc
@@ -0,0 +1,181 @@
+// Copyright (C) 2014-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/unittests/wiredata.h>
+
+#include <dns/exceptions.h>
+#include <dns/rdata.h>
+#include <dns/rdata/generic/detail/char_string.h>
+#include <util/buffer.h>
+
+#include <gtest/gtest.h>
+
+#include <string>
+#include <vector>
+
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+using isc::dns::rdata::generic::detail::CharStringData;
+using isc::dns::rdata::generic::detail::stringToCharStringData;
+using isc::dns::rdata::generic::detail::charStringDataToString;
+using isc::dns::rdata::generic::detail::compareCharStringDatas;
+using isc::util::unittests::matchWireData;
+
+namespace {
+const uint8_t test_charstr[] = {
+    'T', 'e', 's', 't', ' ', 'S', 't', 'r', 'i', 'n', 'g'
+};
+
+class CharStringDataTest : public ::testing::Test {
+protected:
+    CharStringDataTest() :
+        // char-string representation for test data using two types of escape
+        // ('r' = 114)
+        test_str("Test\\ St\\114ing")
+    {
+        str_region.beg = &test_str[0];
+        str_region.len = test_str.size();
+    }
+    CharStringData chstr;           // place holder
+    const std::string test_str;
+    MasterToken::StringRegion str_region;
+};
+
+MasterToken::StringRegion
+createStringRegion(const std::string& str) {
+    MasterToken::StringRegion region;
+    region.beg = &str[0]; // note std ensures this works even if str is empty
+    region.len = str.size();
+    return (region);
+}
+
+TEST_F(CharStringDataTest, normalConversion) {
+    uint8_t tmp[3];             // placeholder for expected sequence
+
+    stringToCharStringData(str_region, chstr);
+    matchWireData(test_charstr, sizeof(test_charstr), &chstr[0], chstr.size());
+
+    // Empty string
+    chstr.clear();
+    stringToCharStringData(createStringRegion(""), chstr);
+    EXPECT_TRUE(chstr.empty());
+
+    // Possible largest char string
+    chstr.clear();
+    std::string long_str(255, 'x');
+    stringToCharStringData(createStringRegion(long_str), chstr);
+    std::vector<uint8_t> expected;
+    expected.insert(expected.end(), long_str.begin(), long_str.end());
+    matchWireData(&expected[0], expected.size(), &chstr[0], chstr.size());
+
+    // Escaped '\'
+    chstr.clear();
+    tmp[0] = '\\';
+    stringToCharStringData(createStringRegion("\\\\"), chstr);
+    matchWireData(tmp, 1, &chstr[0], chstr.size());
+
+    // Boundary values for \DDD
+    chstr.clear();
+    tmp[0] = 0;
+    stringToCharStringData(createStringRegion("\\000"), chstr);
+    matchWireData(tmp, 1, &chstr[0], chstr.size());
+
+    chstr.clear();
+    stringToCharStringData(createStringRegion("\\255"), chstr);
+    tmp[0] = 255;
+    matchWireData(tmp, 1, &chstr[0], chstr.size());
+
+    // Another digit follows DDD; it shouldn't cause confusion
+    chstr.clear();
+    stringToCharStringData(createStringRegion("\\2550"), chstr);
+    tmp[1] = '0';
+    matchWireData(tmp, 2, &chstr[0], chstr.size());
+}
+
+TEST_F(CharStringDataTest, badConversion) {
+    // input string ending with (non escaped) '\'
+    chstr.clear();
+    EXPECT_THROW(stringToCharStringData(createStringRegion("foo\\"), chstr),
+                 InvalidRdataText);
+}
+
+TEST_F(CharStringDataTest, badDDD) {
+    // Check various type of bad form of \DDD
+
+    // Not a number
+    EXPECT_THROW(stringToCharStringData(createStringRegion("\\1a2"), chstr),
+                 InvalidRdataText);
+    EXPECT_THROW(stringToCharStringData(createStringRegion("\\12a"), chstr),
+                 InvalidRdataText);
+
+    // Not in the range of uint8_t
+    EXPECT_THROW(stringToCharStringData(createStringRegion("\\256"), chstr),
+                 InvalidRdataText);
+
+    // Short buffer
+    EXPECT_THROW(stringToCharStringData(createStringRegion("\\42"), chstr),
+                 InvalidRdataText);
+}
+
+const struct TestData {
+    const char *data;
+    const char *expected;
+} conversion_data[] = {
+    {"Test\"Test", "Test\\\"Test"},
+    {"Test;Test", "Test\\;Test"},
+    {"Test\\Test", "Test\\\\Test"},
+    {"Test\x1fTest", "Test\\031Test"},
+    {"Test ~ Test", "Test ~ Test"},
+    {"Test\x7fTest", "Test\\127Test"},
+    {NULL, NULL}
+};
+
+TEST_F(CharStringDataTest, charStringDataToString) {
+    for (const TestData* cur = conversion_data; cur->data != NULL; ++cur) {
+        uint8_t idata[32];
+        size_t length = std::strlen(cur->data);
+        ASSERT_LT(length, sizeof(idata));
+        std::memcpy(idata, cur->data, length);
+        const CharStringData test_data(idata, idata + length);
+        EXPECT_EQ(cur->expected, charStringDataToString(test_data));
+    }
+}
+
+TEST_F(CharStringDataTest, compareCharStringData) {
+    CharStringData charstr;
+    CharStringData charstr2;
+    CharStringData charstr_small1;
+    CharStringData charstr_small2;
+    CharStringData charstr_large1;
+    CharStringData charstr_large2;
+    CharStringData charstr_empty;
+
+    stringToCharStringData(createStringRegion("test string"), charstr);
+    stringToCharStringData(createStringRegion("test string"), charstr2);
+    stringToCharStringData(createStringRegion("test strin"), charstr_small1);
+    stringToCharStringData(createStringRegion("test strina"), charstr_small2);
+    stringToCharStringData(createStringRegion("test stringa"), charstr_large1);
+    stringToCharStringData(createStringRegion("test strinz"), charstr_large2);
+
+    EXPECT_EQ(0, compareCharStringDatas(charstr, charstr2));
+    EXPECT_EQ(0, compareCharStringDatas(charstr2, charstr));
+    EXPECT_EQ(1, compareCharStringDatas(charstr, charstr_small1));
+    EXPECT_EQ(1, compareCharStringDatas(charstr, charstr_small2));
+    EXPECT_EQ(-1, compareCharStringDatas(charstr, charstr_large1));
+    EXPECT_EQ(-1, compareCharStringDatas(charstr, charstr_large2));
+    EXPECT_EQ(-1, compareCharStringDatas(charstr_small1, charstr));
+    EXPECT_EQ(-1, compareCharStringDatas(charstr_small2, charstr));
+    EXPECT_EQ(1, compareCharStringDatas(charstr_large1, charstr));
+    EXPECT_EQ(1, compareCharStringDatas(charstr_large2, charstr));
+
+    EXPECT_EQ(-1, compareCharStringDatas(charstr_empty, charstr));
+    EXPECT_EQ(1, compareCharStringDatas(charstr, charstr_empty));
+    EXPECT_EQ(0, compareCharStringDatas(charstr_empty, charstr_empty));
+}
+
+} // unnamed namespace
diff --git a/src/lib/dns/tests/rdata_char_string_unittest.cc b/src/lib/dns/tests/rdata_char_string_unittest.cc
new file mode 100644
index 0000000..f1618b5
--- /dev/null
+++ b/src/lib/dns/tests/rdata_char_string_unittest.cc
@@ -0,0 +1,246 @@
+// Copyright (C) 2012-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/unittests/wiredata.h>
+
+#include <dns/exceptions.h>
+#include <dns/rdata.h>
+#include <dns/rdata/generic/detail/char_string.h>
+#include <util/buffer.h>
+
+#include <gtest/gtest.h>
+
+#include <string>
+#include <vector>
+
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+using isc::dns::rdata::generic::detail::CharString;
+using isc::dns::rdata::generic::detail::bufferToCharString;
+using isc::dns::rdata::generic::detail::stringToCharString;
+using isc::dns::rdata::generic::detail::charStringToString;
+using isc::dns::rdata::generic::detail::compareCharStrings;
+using isc::util::unittests::matchWireData;
+
+namespace {
+const uint8_t test_charstr[] = {
+    sizeof("Test String") - 1,
+    'T', 'e', 's', 't', ' ', 'S', 't', 'r', 'i', 'n', 'g'
+};
+
+class CharStringTest : public ::testing::Test {
+protected:
+    CharStringTest() :
+        // char-string representation for test data using two types of escape
+        // ('r' = 114)
+        test_str("Test\\ St\\114ing")
+    {
+        str_region.beg = &test_str[0];
+        str_region.len = test_str.size();
+    }
+    CharString chstr;           // place holder
+    const std::string test_str;
+    MasterToken::StringRegion str_region;
+};
+
+MasterToken::StringRegion
+createStringRegion(const std::string& str) {
+    MasterToken::StringRegion region;
+    region.beg = &str[0]; // note std ensures this works even if str is empty
+    region.len = str.size();
+    return (region);
+}
+
+TEST_F(CharStringTest, normalConversion) {
+    uint8_t tmp[3];             // placeholder for expected sequence
+
+    stringToCharString(str_region, chstr);
+    matchWireData(test_charstr, sizeof(test_charstr), &chstr[0], chstr.size());
+
+    // Empty string
+    chstr.clear();
+    stringToCharString(createStringRegion(""), chstr);
+    tmp[0] = 0;
+    matchWireData(tmp, 1, &chstr[0], chstr.size());
+
+    // Possible largest char string
+    chstr.clear();
+    std::string long_str(255, 'x');
+    stringToCharString(createStringRegion(long_str), chstr);
+    std::vector<uint8_t> expected;
+    expected.push_back(255);    // len of char string
+    expected.insert(expected.end(), long_str.begin(), long_str.end());
+    matchWireData(&expected[0], expected.size(), &chstr[0], chstr.size());
+
+    // Same data as the previous case, but the original string is longer than
+    // the max; this shouldn't be rejected
+    chstr.clear();
+    long_str.at(254) = '\\';    // replace the last 'x' with '\'
+    long_str.append("120");     // 'x' = 120
+    stringToCharString(createStringRegion(long_str), chstr);
+    matchWireData(&expected[0], expected.size(), &chstr[0], chstr.size());
+
+    // Escaped '\'
+    chstr.clear();
+    tmp[0] = 1;
+    tmp[1] = '\\';
+    stringToCharString(createStringRegion("\\\\"), chstr);
+    matchWireData(tmp, 2, &chstr[0], chstr.size());
+
+    // Boundary values for \DDD
+    chstr.clear();
+    tmp[0] = 1;
+    tmp[1] = 0;
+    stringToCharString(createStringRegion("\\000"), chstr);
+    matchWireData(tmp, 2, &chstr[0], chstr.size());
+
+    chstr.clear();
+    stringToCharString(createStringRegion("\\255"), chstr);
+    tmp[0] = 1;
+    tmp[1] = 255;
+    matchWireData(tmp, 2, &chstr[0], chstr.size());
+
+    // Another digit follows DDD; it shouldn't cause confusion
+    chstr.clear();
+    stringToCharString(createStringRegion("\\2550"), chstr);
+    tmp[0] = 2;                 // string len is now 2
+    tmp[2] = '0';
+    matchWireData(tmp, 3, &chstr[0], chstr.size());
+}
+
+TEST_F(CharStringTest, badConversion) {
+    // string cannot exceed 255 bytes
+    EXPECT_THROW(stringToCharString(createStringRegion(std::string(256, 'a')),
+                                    chstr),
+                 CharStringTooLong);
+
+    // input string ending with (non escaped) '\'
+    chstr.clear();
+    EXPECT_THROW(stringToCharString(createStringRegion("foo\\"), chstr),
+                 InvalidRdataText);
+}
+
+TEST_F(CharStringTest, badDDD) {
+    // Check various type of bad form of \DDD
+
+    // Not a number
+    EXPECT_THROW(stringToCharString(createStringRegion("\\1a2"), chstr),
+                 InvalidRdataText);
+    EXPECT_THROW(stringToCharString(createStringRegion("\\12a"), chstr),
+                 InvalidRdataText);
+
+    // Not in the range of uint8_t
+    EXPECT_THROW(stringToCharString(createStringRegion("\\256"), chstr),
+                 InvalidRdataText);
+
+    // Short buffer
+    EXPECT_THROW(stringToCharString(createStringRegion("\\42"), chstr),
+                 InvalidRdataText);
+}
+
+const struct TestData {
+    const char *data;
+    const char *expected;
+} conversion_data[] = {
+    {"Test\"Test", "Test\\\"Test"},
+    {"Test;Test", "Test\\;Test"},
+    {"Test\\Test", "Test\\\\Test"},
+    {"Test\x1fTest", "Test\\031Test"},
+    {"Test ~ Test", "Test ~ Test"},
+    {"Test\x7fTest", "Test\\127Test"},
+    {NULL, NULL}
+};
+
+TEST_F(CharStringTest, charStringToString) {
+    for (const TestData* cur = conversion_data; cur->data != NULL; ++cur) {
+        uint8_t idata[32];
+        size_t length = std::strlen(cur->data);
+        // length (1 byte) + string (length bytes)
+        assert(sizeof(idata) > length);
+        idata[0] = static_cast<uint8_t>(length);
+        std::memcpy(idata + 1, cur->data, length);
+        const CharString test_data(idata, idata + length + 1);
+        EXPECT_EQ(cur->expected, charStringToString(test_data));
+    }
+}
+
+TEST_F(CharStringTest, bufferToCharString) {
+    const size_t chstr_size = sizeof(test_charstr);
+    isc::util::InputBuffer buf(test_charstr, chstr_size);
+    size_t read = bufferToCharString(buf, chstr_size, chstr);
+
+    EXPECT_EQ(chstr_size, read);
+    EXPECT_EQ("Test String", charStringToString(chstr));
+}
+
+TEST_F(CharStringTest, bufferToCharString_bad) {
+    const size_t chstr_size = sizeof(test_charstr);
+    isc::util::InputBuffer buf(test_charstr, chstr_size);
+    // Set valid data in both so we can make sure the charstr is not
+    // modified
+    bufferToCharString(buf, chstr_size, chstr);
+    ASSERT_EQ("Test String", charStringToString(chstr));
+
+    // Should be at end of buffer now, so it should fail
+    EXPECT_THROW(bufferToCharString(buf, chstr_size - 1, chstr),
+                 DNSMessageFORMERR);
+    EXPECT_EQ("Test String", charStringToString(chstr));
+
+    // reset and try to read with too low rdata_len
+    buf.setPosition(0);
+    EXPECT_THROW(bufferToCharString(buf, chstr_size - 1, chstr),
+                 DNSMessageFORMERR);
+    EXPECT_EQ("Test String", charStringToString(chstr));
+
+    // set internal charstring len too high
+    const uint8_t test_charstr_err[] = {
+        sizeof("Test String") + 1,
+        'T', 'e', 's', 't', ' ', 'S', 't', 'r', 'i', 'n', 'g'
+    };
+    buf = isc::util::InputBuffer(test_charstr_err, sizeof(test_charstr_err));
+    EXPECT_THROW(bufferToCharString(buf, chstr_size, chstr),
+                 DNSMessageFORMERR);
+    EXPECT_EQ("Test String", charStringToString(chstr));
+
+}
+
+
+
+TEST_F(CharStringTest, compareCharString) {
+    CharString charstr;
+    CharString charstr2;
+    CharString charstr_small1;
+    CharString charstr_small2;
+    CharString charstr_large1;
+    CharString charstr_large2;
+    CharString charstr_empty;
+
+    stringToCharString(createStringRegion("test string"), charstr);
+    stringToCharString(createStringRegion("test string"), charstr2);
+    stringToCharString(createStringRegion("test strin"), charstr_small1);
+    stringToCharString(createStringRegion("test strina"), charstr_small2);
+    stringToCharString(createStringRegion("test stringa"), charstr_large1);
+    stringToCharString(createStringRegion("test strinz"), charstr_large2);
+
+    EXPECT_EQ(0, compareCharStrings(charstr, charstr2));
+    EXPECT_EQ(0, compareCharStrings(charstr2, charstr));
+    EXPECT_EQ(1, compareCharStrings(charstr, charstr_small1));
+    EXPECT_EQ(1, compareCharStrings(charstr, charstr_small2));
+    EXPECT_EQ(-1, compareCharStrings(charstr, charstr_large1));
+    EXPECT_EQ(-1, compareCharStrings(charstr, charstr_large2));
+    EXPECT_EQ(-1, compareCharStrings(charstr_small1, charstr));
+    EXPECT_EQ(-1, compareCharStrings(charstr_small2, charstr));
+    EXPECT_EQ(1, compareCharStrings(charstr_large1, charstr));
+    EXPECT_EQ(1, compareCharStrings(charstr_large2, charstr));
+
+    EXPECT_EQ(-1, compareCharStrings(charstr_empty, charstr));
+    EXPECT_EQ(1, compareCharStrings(charstr, charstr_empty));
+    EXPECT_EQ(0, compareCharStrings(charstr_empty, charstr_empty));
+}
+
+} // unnamed namespace
diff --git a/src/lib/dns/tests/rdata_cname_unittest.cc b/src/lib/dns/tests/rdata_cname_unittest.cc
new file mode 100644
index 0000000..e666355
--- /dev/null
+++ b/src/lib/dns/tests/rdata_cname_unittest.cc
@@ -0,0 +1,135 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_CNAME_Test : public RdataTest {
+public:
+    Rdata_CNAME_Test() :
+        rdata_cname("cn.example.com."),
+        rdata_cname2("cn2.example.com.")
+    {}
+
+    const generic::CNAME rdata_cname;
+    const generic::CNAME rdata_cname2;
+};
+
+const uint8_t wiredata_cname[] = {
+    0x02, 0x63, 0x6e, 0x07, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x03,
+    0x63, 0x6f, 0x6d, 0x00 };
+const uint8_t wiredata_cname2[] = {
+    // first name: cn.example.com.
+    0x02, 0x63, 0x6e, 0x07, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x03,
+    0x63, 0x6f, 0x6d, 0x00,
+    // second name: cn2.example.com.  all labels except the first should be
+    // compressed.
+    0x03, 0x63, 0x6e, 0x32, 0xc0, 0x03 };
+
+TEST_F(Rdata_CNAME_Test, createFromText) {
+    EXPECT_EQ(0, rdata_cname.compare(generic::CNAME("cn.example.com.")));
+    // explicitly add a trailing dot.  should be the same RDATA.
+    EXPECT_EQ(0, rdata_cname.compare(generic::CNAME("cn.example.com.")));
+    // should be case sensitive.
+    EXPECT_EQ(0, rdata_cname.compare(generic::CNAME("CN.EXAMPLE.COM.")));
+    // RDATA of a class-independent type should be recognized for any
+    // "unknown" class.
+    EXPECT_EQ(0, rdata_cname.compare(*createRdata(RRType("CNAME"),
+                                                  RRClass(65000),
+                                                  "cn.example.com.")));
+}
+
+TEST_F(Rdata_CNAME_Test, badText) {
+    // Extra text at end of line
+    EXPECT_THROW(generic::CNAME("cname.example.com. extra."), InvalidRdataText);
+}
+
+TEST_F(Rdata_CNAME_Test, createFromWire) {
+    EXPECT_EQ(0, rdata_cname.compare(
+                  *rdataFactoryFromFile(RRType("CNAME"), RRClass("IN"),
+                                        "rdata_cname_fromWire")));
+    // RDLENGTH is too short
+    EXPECT_THROW(rdataFactoryFromFile(RRType("CNAME"), RRClass("IN"),
+                                      "rdata_cname_fromWire", 18),
+                 InvalidRdataLength);
+    // RDLENGTH is too long
+    EXPECT_THROW(rdataFactoryFromFile(RRType("CNAME"), RRClass("IN"),
+                                      "rdata_cname_fromWire", 36),
+                 InvalidRdataLength);
+    // incomplete name.  the error should be detected in the name constructor
+    EXPECT_THROW(rdataFactoryFromFile(RRType("CNAME"), RRClass("IN"),
+                                      "rdata_cname_fromWire", 71),
+                 DNSMessageFORMERR);
+
+    EXPECT_EQ(0, generic::CNAME("cn2.example.com.").compare(
+                  *rdataFactoryFromFile(RRType("CNAME"), RRClass("IN"),
+                                        "rdata_cname_fromWire", 55)));
+    EXPECT_THROW(*rdataFactoryFromFile(RRType("CNAME"), RRClass("IN"),
+                                       "rdata_cname_fromWire", 63),
+                 InvalidRdataLength);
+}
+
+TEST_F(Rdata_CNAME_Test, createFromLexer) {
+    EXPECT_EQ(0, rdata_cname.compare(
+        *test::createRdataUsingLexer(RRType::CNAME(), RRClass::IN(),
+                                     "cn.example.com.")));
+
+    // test::createRdataUsingLexer() constructs relative to
+    // "example.org." origin.
+    EXPECT_EQ(0, generic::CNAME("cname10.example.org.").compare(
+        *test::createRdataUsingLexer(RRType::CNAME(), RRClass::IN(),
+                                     "cname10")));
+
+    // Extra text at end of line
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::CNAME(), RRClass::IN(),
+                                             "cname.example.com. extra."));
+}
+
+TEST_F(Rdata_CNAME_Test, toWireBuffer) {
+    rdata_cname.toWire(obuffer);
+    matchWireData(wiredata_cname, sizeof(wiredata_cname),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_CNAME_Test, toWireRenderer) {
+    rdata_cname.toWire(renderer);
+    matchWireData(wiredata_cname, sizeof(wiredata_cname),
+                  renderer.getData(), renderer.getLength());
+
+    rdata_cname2.toWire(renderer);
+    matchWireData(wiredata_cname2, sizeof(wiredata_cname2),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_CNAME_Test, toText) {
+    EXPECT_EQ("cn.example.com.", rdata_cname.toText());
+}
+
+TEST_F(Rdata_CNAME_Test, getCname) {
+    EXPECT_EQ(Name("cn.example.com."), rdata_cname.getCname());
+}
+}
diff --git a/src/lib/dns/tests/rdata_dhcid_unittest.cc b/src/lib/dns/tests/rdata_dhcid_unittest.cc
new file mode 100644
index 0000000..a96c3e4
--- /dev/null
+++ b/src/lib/dns/tests/rdata_dhcid_unittest.cc
@@ -0,0 +1,165 @@
+// Copyright (C) 2011-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <exceptions/exceptions.h>
+
+#include <util/buffer.h>
+#include <dns/rdataclass.h>
+#include <util/encode/base64.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::util::encode;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+
+class Rdata_DHCID_Test : public RdataTest {
+protected:
+    Rdata_DHCID_Test() :
+        dhcid_txt("0LIg0LvQtdGB0YMg0YDQvtC00LjQu9Cw0YHRjCDRkdC70L7Rh9C60LA="),
+        rdata_dhcid(dhcid_txt)
+    {}
+
+    void checkFromText_None(const string& rdata_str) {
+        checkFromText<in::DHCID, isc::Exception, isc::Exception>(
+            rdata_str, rdata_dhcid, false, false);
+    }
+
+    void checkFromText_BadValue(const string& rdata_str) {
+        checkFromText<in::DHCID, BadValue, BadValue>(
+            rdata_str, rdata_dhcid, true, true);
+    }
+
+    void checkFromText_LexerError(const string& rdata_str) {
+        checkFromText
+            <in::DHCID, InvalidRdataText, MasterLexer::LexerError>(
+                rdata_str, rdata_dhcid, true, true);
+    }
+
+    void checkFromText_BadString(const string& rdata_str) {
+        checkFromText
+            <in::DHCID, InvalidRdataText, isc::Exception>(
+                rdata_str, rdata_dhcid, true, false);
+    }
+
+    const string dhcid_txt;
+    const in::DHCID rdata_dhcid;
+};
+
+TEST_F(Rdata_DHCID_Test, fromText) {
+    EXPECT_EQ(dhcid_txt, rdata_dhcid.toText());
+
+    // Space in digest data is OK
+    checkFromText_None(
+            "0LIg0LvQtdGB0YMg 0YDQvtC00LjQu9Cw 0YHRjCDRkdC70L7R h9C60LA=");
+
+    // Multi-line digest data is OK, if enclosed in parentheses
+    checkFromText_None(
+            "( 0LIg0LvQtdGB0YMg0YDQvtC00LjQu9Cw\n0YHRjCDRkdC70L7R h9C60LA= )");
+
+    // Trailing garbage. This should cause only the string constructor
+    // to fail, but the lexer constructor must be able to continue
+    // parsing from it.
+    checkFromText_BadString(
+            "0LIg0LvQtdGB0YMg0YDQvtC00LjQu9Cw0YHRjCDRkdC70L7Rh9C60LA="
+            " ; comment\n"
+            "AAIBY2/AuCccgoJbsaxcQc9TUapptP69lOjxfNuVAA2kjEA=");
+}
+
+TEST_F(Rdata_DHCID_Test, badText) {
+    // missing digest data
+    checkFromText_LexerError("");
+
+    // invalid base64
+    checkFromText_BadValue("EEeeeeeeEEEeeeeeeGaaahAAAAAAAAHHHHHHHHHHH!=");
+
+    // unterminated multi-line base64
+    checkFromText_LexerError(
+            "( 0LIg0LvQtdGB0YMg0YDQvtC00LjQu9Cw\n0YHRjCDRkdC70L7R h9C60LA=");
+}
+
+TEST_F(Rdata_DHCID_Test, copy) {
+    const in::DHCID rdata_dhcid2(rdata_dhcid);
+    EXPECT_EQ(0, rdata_dhcid.compare(rdata_dhcid2));
+}
+
+TEST_F(Rdata_DHCID_Test, createFromWire) {
+    EXPECT_EQ(0, rdata_dhcid.compare(
+                  *rdataFactoryFromFile(RRType("DHCID"), RRClass("IN"),
+                                        "rdata_dhcid_fromWire")));
+
+    InputBuffer buffer(NULL, 0);
+    EXPECT_THROW(in::DHCID(buffer, 0), InvalidRdataLength);
+
+    // TBD: more tests
+}
+
+TEST_F(Rdata_DHCID_Test, createFromLexer) {
+    EXPECT_EQ(0, rdata_dhcid.compare(
+        *test::createRdataUsingLexer(RRType::DHCID(), RRClass::IN(),
+                                     dhcid_txt)));
+}
+
+TEST_F(Rdata_DHCID_Test, toWireRenderer) {
+    rdata_dhcid.toWire(renderer);
+
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("rdata_dhcid_toWire", data);
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_DHCID_Test, toWireBuffer) {
+    rdata_dhcid.toWire(obuffer);
+
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("rdata_dhcid_toWire", data);
+    matchWireData(&data[0], data.size(),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_DHCID_Test, toText) {
+    EXPECT_EQ(dhcid_txt, rdata_dhcid.toText());
+}
+
+TEST_F(Rdata_DHCID_Test, getDHCIDDigest) {
+    const string dhcid_txt1(encodeBase64(rdata_dhcid.getDigest()));
+
+    EXPECT_EQ(dhcid_txt, dhcid_txt1);
+}
+
+TEST_F(Rdata_DHCID_Test, compare) {
+    // trivial case: self equivalence
+    // cppcheck-suppress uselessCallsCompare
+    EXPECT_EQ(0, rdata_dhcid.compare(rdata_dhcid));
+
+    in::DHCID rdata_dhcid1("0YLQvtC/0L7Qu9GPINC00LLQsCDRgNGD0LHQu9GP");
+    in::DHCID rdata_dhcid2("0YLQvtC/0L7Qu9GPINGC0YDQuCDRgNGD0LHQu9GP");
+    in::DHCID rdata_dhcid3("0YLQvtC/0L7Qu9GPINGH0LXRgtGL0YDQtSDRgNGD0LHQu9GP");
+
+    EXPECT_LT(rdata_dhcid1.compare(rdata_dhcid2), 0);
+    EXPECT_GT(rdata_dhcid2.compare(rdata_dhcid1), 0);
+
+    EXPECT_LT(rdata_dhcid2.compare(rdata_dhcid3), 0);
+    EXPECT_GT(rdata_dhcid3.compare(rdata_dhcid2), 0);
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(rdata_dhcid.compare(*rdata_nomatch), bad_cast);
+}
+}
diff --git a/src/lib/dns/tests/rdata_dname_unittest.cc b/src/lib/dns/tests/rdata_dname_unittest.cc
new file mode 100644
index 0000000..3bdfb23
--- /dev/null
+++ b/src/lib/dns/tests/rdata_dname_unittest.cc
@@ -0,0 +1,137 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_DNAME_Test : public RdataTest {
+public:
+    Rdata_DNAME_Test() :
+        rdata_dname("dn.example.com."),
+        rdata_dname2("dn2.example.com.")
+    {}
+
+    const generic::DNAME rdata_dname;
+    const generic::DNAME rdata_dname2;
+};
+
+const uint8_t wiredata_dname[] = {
+    0x02, 0x64, 0x6e, 0x07, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x03,
+    0x63, 0x6f, 0x6d, 0x00 };
+const uint8_t wiredata_dname2[] = {
+    // first name: dn.example.com.
+    0x02, 0x64, 0x6e, 0x07, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x03,
+    0x63, 0x6f, 0x6d, 0x00,
+    // second name: dn2.example.com.  The "example.com" shouldn't be compressed
+    // because DNAME is not a well know type per RFC3597.
+    0x03, 0x64, 0x6e, 0x32,
+    0x07, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x03,
+    0x63, 0x6f, 0x6d, 0x00 };
+
+TEST_F(Rdata_DNAME_Test, createFromText) {
+    EXPECT_EQ(0, rdata_dname.compare(generic::DNAME("dn.example.com.")));
+    // explicitly add a trailing dot.  should be the same RDATA.
+    EXPECT_EQ(0, rdata_dname.compare(generic::DNAME("dn.example.com.")));
+    // should be case sensitive.
+    EXPECT_EQ(0, rdata_dname.compare(generic::DNAME("DN.EXAMPLE.COM.")));
+    // RDATA of a class-independent type should be recognized for any
+    // "unknown" class.
+    EXPECT_EQ(0, rdata_dname.compare(*createRdata(RRType("DNAME"),
+                                                  RRClass(65000),
+                                                  "dn.example.com.")));
+}
+
+TEST_F(Rdata_DNAME_Test, badText) {
+    // Extra text at end of line
+    EXPECT_THROW(generic::DNAME("dname.example.com. extra."), InvalidRdataText);
+}
+
+TEST_F(Rdata_DNAME_Test, createFromWire) {
+    EXPECT_EQ(0, rdata_dname.compare(
+                  *rdataFactoryFromFile(RRType("DNAME"), RRClass("IN"),
+                                        "rdata_dname_fromWire")));
+    // RDLENGTH is too short
+    EXPECT_THROW(rdataFactoryFromFile(RRType("DNAME"), RRClass("IN"),
+                                      "rdata_dname_fromWire", 18),
+                 InvalidRdataLength);
+    // RDLENGTH is too long
+    EXPECT_THROW(rdataFactoryFromFile(RRType("DNAME"), RRClass("IN"),
+                                      "rdata_dname_fromWire", 36),
+                 InvalidRdataLength);
+    // incomplete name.  the error should be detected in the name constructor
+    EXPECT_THROW(rdataFactoryFromFile(RRType("DNAME"), RRClass("IN"),
+                                      "rdata_dname_fromWire", 71),
+                 DNSMessageFORMERR);
+
+    EXPECT_EQ(0, generic::DNAME("dn2.example.com.").compare(
+                  *rdataFactoryFromFile(RRType("DNAME"), RRClass("IN"),
+                                        "rdata_dname_fromWire", 55)));
+    EXPECT_THROW(*rdataFactoryFromFile(RRType("DNAME"), RRClass("IN"),
+                                       "rdata_dname_fromWire", 63),
+                 InvalidRdataLength);
+}
+
+TEST_F(Rdata_DNAME_Test, createFromLexer) {
+    EXPECT_EQ(0, rdata_dname.compare(
+        *test::createRdataUsingLexer(RRType::DNAME(), RRClass::IN(),
+                                     "dn.example.com.")));
+
+    // test::createRdataUsingLexer() constructs relative to
+    // "example.org." origin.
+    EXPECT_EQ(0, generic::DNAME("dname8.example.org.").compare(
+        *test::createRdataUsingLexer(RRType::DNAME(), RRClass::IN(),
+                                     "dname8")));
+
+    // Extra text at end of line
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::DNAME(), RRClass::IN(),
+                                             "dname.example.com. extra."));
+}
+
+TEST_F(Rdata_DNAME_Test, toWireBuffer) {
+    rdata_dname.toWire(obuffer);
+    matchWireData(wiredata_dname, sizeof(wiredata_dname),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_DNAME_Test, toWireRenderer) {
+    rdata_dname.toWire(renderer);
+    matchWireData(wiredata_dname, sizeof(wiredata_dname),
+                  renderer.getData(), renderer.getLength());
+
+    rdata_dname2.toWire(renderer);
+    matchWireData(wiredata_dname2, sizeof(wiredata_dname2),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_DNAME_Test, toText) {
+    EXPECT_EQ("dn.example.com.", rdata_dname.toText());
+}
+
+TEST_F(Rdata_DNAME_Test, getDname) {
+    EXPECT_EQ(Name("dn.example.com."), rdata_dname.getDname());
+}
+}
diff --git a/src/lib/dns/tests/rdata_dnskey_unittest.cc b/src/lib/dns/tests/rdata_dnskey_unittest.cc
new file mode 100644
index 0000000..6f0866d
--- /dev/null
+++ b/src/lib/dns/tests/rdata_dnskey_unittest.cc
@@ -0,0 +1,200 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <string>
+
+#include <exceptions/exceptions.h>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_DNSKEY_Test : public RdataTest {
+protected:
+    Rdata_DNSKEY_Test() :
+        dnskey_txt("257 3 5 BEAAAAOhHQDBrhQbtphgq2wQUpEQ5t4DtUHxoMV"
+                   "Fu2hWLDMvoOMRXjGrhhCeFvAZih7yJHf8ZGfW6hd38hXG/x"
+                   "ylYCO6Krpbdojwx8YMXLA5/kA+u50WIL8ZR1R6KTbsYVMf/"
+                   "Qx5RiNbPClw+vT+U8eXEJmO20jIS1ULgqy347cBB1zMnnz/"
+                   "4LJpA0da9CbKj3A254T515sNIMcwsB8/2+2E63/zZrQzBkj"
+                   "0BrN/9Bexjpiks3jRhZatEsXn3dTy47R09Uix5WcJt+xzqZ"
+                   "7+ysyLKOOedS39Z7SDmsn2eA0FKtQpwA6LXeG2w+jxmw3oA"
+                   "8lVUgEf/rzeC/bByBNsO70aEFTd"),
+        dnskey_txt2("257 3 5 YmluZDEwLmlzYy5vcmc="),
+        rdata_dnskey(dnskey_txt),
+        rdata_dnskey2(dnskey_txt2)
+    {}
+
+    void checkFromText_None(const string& rdata_str) {
+        checkFromText<generic::DNSKEY, isc::Exception, isc::Exception>(
+            rdata_str, rdata_dnskey2, false, false);
+    }
+
+    void checkFromText_InvalidText(const string& rdata_str) {
+        checkFromText<generic::DNSKEY, InvalidRdataText, InvalidRdataText>(
+            rdata_str, rdata_dnskey2, true, true);
+    }
+
+    void checkFromText_InvalidLength(const string& rdata_str) {
+        checkFromText<generic::DNSKEY, InvalidRdataLength, InvalidRdataLength>(
+            rdata_str, rdata_dnskey2, true, true);
+    }
+
+    void checkFromText_BadValue(const string& rdata_str) {
+        checkFromText<generic::DNSKEY, BadValue, BadValue>(
+            rdata_str, rdata_dnskey2, true, true);
+    }
+
+    void checkFromText_LexerError(const string& rdata_str) {
+        checkFromText
+            <generic::DNSKEY, InvalidRdataText, MasterLexer::LexerError>(
+                rdata_str, rdata_dnskey2, true, true);
+    }
+
+    void checkFromText_BadString(const string& rdata_str) {
+        checkFromText
+            <generic::DNSKEY, InvalidRdataText, isc::Exception>(
+                rdata_str, rdata_dnskey2, true, false);
+    }
+
+    const string dnskey_txt;
+    const string dnskey_txt2;
+    const generic::DNSKEY rdata_dnskey;
+    const generic::DNSKEY rdata_dnskey2;
+};
+
+TEST_F(Rdata_DNSKEY_Test, fromText) {
+    EXPECT_EQ(dnskey_txt, rdata_dnskey.toText());
+
+    // Space in key data is OK
+    checkFromText_None("257 3 5 YmluZDEw LmlzYy5vcmc=");
+
+    // Delimited number in key data is OK
+    checkFromText_None("257 3 5 YmluZDEwLmlzYy 5 vcmc=");
+
+    // Missing keydata is OK
+    EXPECT_NO_THROW(const generic::DNSKEY rdata_dnskey3("257 3 5"));
+
+    // Key data too short for RSA/MD5 algorithm is OK when
+    // constructing. But getTag() on this object would throw (see
+    // .getTag tests).
+    EXPECT_NO_THROW(const generic::DNSKEY rdata_dnskey4("1 1 1 YQ=="));
+
+    // Flags field out of range
+    checkFromText_InvalidText("65536 3 5 YmluZDEwLmlzYy5vcmc=");
+
+    // Protocol field out of range
+    checkFromText_InvalidText("257 256 5 YmluZDEwLmlzYy5vcmc=");
+
+    // Algorithm field out of range
+    checkFromText_InvalidText("257 3 256 YmluZDEwLmlzYy5vcmc=");
+
+    // Missing algorithm field
+    checkFromText_LexerError("257 3 YmluZDEwLmlzYy5vcmc=");
+
+    // Invalid key data field (not Base64)
+    checkFromText_BadValue("257 3 5 BAAAAAAAAAAAD");
+
+    // String instead of number
+    checkFromText_LexerError("foo 3 5 YmluZDEwLmlzYy5vcmc=");
+    checkFromText_LexerError("257 foo 5 YmluZDEwLmlzYy5vcmc=");
+    checkFromText_LexerError("257 3 foo YmluZDEwLmlzYy5vcmc=");
+
+    // Trailing garbage. This should cause only the string constructor
+    // to fail, but the lexer constructor must be able to continue
+    // parsing from it.
+    checkFromText_BadString("257 3 5 YmluZDEwLmlzYy5vcmc= ; comment\n"
+                            "257 3 4 YmluZDEwLmlzYy5vcmc=");
+
+    // Unmatched parenthesis should cause a lexer error
+    checkFromText_LexerError("257 3 5 )YmluZDEwLmlzYy5vcmc=");
+}
+
+TEST_F(Rdata_DNSKEY_Test, assign) {
+    generic::DNSKEY rdata_dnskey2("257 3 5 YQ==");
+    rdata_dnskey2 = rdata_dnskey;
+    EXPECT_EQ(0, rdata_dnskey.compare(rdata_dnskey2));
+}
+
+TEST_F(Rdata_DNSKEY_Test, createFromLexer) {
+    EXPECT_EQ(0, rdata_dnskey.compare(
+        *test::createRdataUsingLexer(RRType::DNSKEY(), RRClass::IN(),
+                                     dnskey_txt)));
+}
+
+TEST_F(Rdata_DNSKEY_Test, toWireRenderer) {
+    renderer.skip(2);
+    rdata_dnskey.toWire(renderer);
+
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("rdata_dnskey_fromWire.wire", data);
+    matchWireData(&data[2], data.size() - 2,
+                  static_cast<const uint8_t *>(renderer.getData()) + 2,
+                  renderer.getLength() - 2);
+}
+
+TEST_F(Rdata_DNSKEY_Test, toWireBuffer) {
+    rdata_dnskey.toWire(obuffer);
+
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("rdata_dnskey_fromWire.wire", data);
+    matchWireData(&data[2], data.size() - 2,
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_DNSKEY_Test, createFromWire) {
+    EXPECT_EQ(0, rdata_dnskey.compare(
+                  *rdataFactoryFromFile(RRType("DNSKEY"), RRClass("IN"),
+                                        "rdata_dnskey_fromWire.wire")));
+
+    // Missing keydata is OK
+    const generic::DNSKEY rdata_dnskey_missing_keydata("257 3 5");
+    EXPECT_EQ(0, rdata_dnskey_missing_keydata.compare(
+        *rdataFactoryFromFile(RRType("DNSKEY"), RRClass("IN"),
+                              "rdata_dnskey_empty_keydata_fromWire.wire")));
+}
+
+TEST_F(Rdata_DNSKEY_Test, getTag) {
+    EXPECT_EQ(12892, rdata_dnskey.getTag());
+
+    // Short keydata with algorithm RSA/MD5 must throw.
+    const generic::DNSKEY rdata_dnskey_short_keydata1("1 1 1 YQ==");
+    EXPECT_THROW(rdata_dnskey_short_keydata1.getTag(), isc::OutOfRange);
+
+    // Short keydata with algorithm not RSA/MD5 must not throw.
+    const generic::DNSKEY rdata_dnskey_short_keydata2("257 3 5 YQ==");
+    EXPECT_NO_THROW(rdata_dnskey_short_keydata2.getTag());
+}
+
+TEST_F(Rdata_DNSKEY_Test, getAlgorithm) {
+    EXPECT_EQ(5, rdata_dnskey.getAlgorithm());
+}
+
+TEST_F(Rdata_DNSKEY_Test, getFlags) {
+    EXPECT_EQ(257, rdata_dnskey.getFlags());
+}
+
+}
diff --git a/src/lib/dns/tests/rdata_ds_like_unittest.cc b/src/lib/dns/tests/rdata_ds_like_unittest.cc
new file mode 100644
index 0000000..d4ea924
--- /dev/null
+++ b/src/lib/dns/tests/rdata_ds_like_unittest.cc
@@ -0,0 +1,229 @@
+// Copyright (C) 2011-2019 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <algorithm>
+#include <string>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+// hacks to make templates work
+template <class T>
+class RRTYPE : public RRType {
+public:
+    RRTYPE();
+};
+
+template<> RRTYPE<generic::DS>::RRTYPE() : RRType(RRType::DS()) {}
+template<> RRTYPE<generic::DLV>::RRTYPE() : RRType(RRType::DLV()) {}
+
+template <class DS_LIKE>
+class Rdata_DS_LIKE_Test : public RdataTest {
+protected:
+    Rdata_DS_LIKE_Test() :
+        ds_like_txt("12892 5 2 F1E184C0E1D615D20EB3C223ACED3B03C773DD952D"
+                    "5F0EB5C777586DE18DA6B5"),
+        rdata_ds_like(ds_like_txt)
+    {}
+    const string ds_like_txt;
+    const DS_LIKE rdata_ds_like;
+};
+
+// The list of types we want to test.
+typedef testing::Types<generic::DS, generic::DLV> Implementations;
+
+#ifdef TYPED_TEST_SUITE
+TYPED_TEST_SUITE(Rdata_DS_LIKE_Test, Implementations);
+#else
+TYPED_TEST_CASE(Rdata_DS_LIKE_Test, Implementations);
+#endif
+
+TYPED_TEST(Rdata_DS_LIKE_Test, createFromText) {
+    // It's valid for the digest's presentation format to contain
+    // spaces. See RFC4034 section 5.3.
+    EXPECT_EQ(0, this->rdata_ds_like.compare(
+        TypeParam("12892 5 2 F1E184C0E1D615D20EB3C223ACED3B03C773DD952D5F0EB5"
+                  "C777 58 6DE18  \t DA6B5")));
+}
+
+TYPED_TEST(Rdata_DS_LIKE_Test, toText_DS_LIKE) {
+    EXPECT_EQ(this->ds_like_txt, this->rdata_ds_like.toText());
+}
+
+TYPED_TEST(Rdata_DS_LIKE_Test, badText_DS_LIKE) {
+    EXPECT_THROW(const TypeParam ds_like2("99999 5 2 BEEF"), InvalidRdataText);
+    EXPECT_THROW(const TypeParam ds_like2("11111 555 2 BEEF"),
+                 InvalidRdataText);
+    EXPECT_THROW(const TypeParam ds_like2("11111 5 22222 BEEF"),
+                 InvalidRdataText);
+    EXPECT_THROW(const TypeParam ds_like2("11111 5 2"), InvalidRdataText);
+    EXPECT_THROW(const TypeParam ds_like2("GARBAGE IN"), InvalidRdataText);
+    // no space between the digest type and the digest.
+    EXPECT_THROW(const TypeParam ds_like2(
+                     "12892 5 2F1E184C0E1D615D20EB3C223ACED3B03C773DD952D"
+                     "5F0EB5C777586DE18DA6B5"), InvalidRdataText);
+}
+
+TYPED_TEST(Rdata_DS_LIKE_Test, createFromWire_DS_LIKE) {
+    EXPECT_EQ(0, this->rdata_ds_like.compare(
+              *this->rdataFactoryFromFile(RRTYPE<TypeParam>(), RRClass::IN(),
+                                          "rdata_ds_fromWire")));
+}
+
+TYPED_TEST(Rdata_DS_LIKE_Test, createFromLexer_DS_LIKE) {
+    EXPECT_EQ(0, this->rdata_ds_like.compare(
+        *test::createRdataUsingLexer(RRTYPE<TypeParam>(), RRClass::IN(),
+                                     this->ds_like_txt)));
+
+    // Whitespace is okay
+    EXPECT_EQ(0, this->rdata_ds_like.compare(
+        *test::createRdataUsingLexer(RRTYPE<TypeParam>(), RRClass::IN(),
+                                     "12892 5 2 F1E184C0E1D615D20EB3C223ACED3B0"
+                                     "3C773DD952D5F0EB5C777 58 6DE18  \t DA6B5"
+             )));
+
+    // Exceptions cause NULL to be returned.
+
+    // Bad tag
+    EXPECT_FALSE(test::createRdataUsingLexer(RRTYPE<TypeParam>(), RRClass::IN(),
+                                             "65536 5 2 BEEF"));
+
+    // Bad algorithm
+    EXPECT_FALSE(test::createRdataUsingLexer(RRTYPE<TypeParam>(), RRClass::IN(),
+                                             "1024 256 2 BEEF"));
+
+    // Bad digest type
+    EXPECT_FALSE(test::createRdataUsingLexer(RRTYPE<TypeParam>(), RRClass::IN(),
+                                             "2048 2 256 BEEF"));
+}
+
+TYPED_TEST(Rdata_DS_LIKE_Test, assignment_DS_LIKE) {
+    TypeParam copy(this->ds_like_txt);
+    copy = this->rdata_ds_like;
+    EXPECT_EQ(0, copy.compare(this->rdata_ds_like));
+
+    // Check if the copied data is valid even after the original is deleted
+    TypeParam* copy2 = new TypeParam(this->rdata_ds_like);
+    TypeParam copy3(this->ds_like_txt);
+    copy3 = *copy2;
+    delete copy2;
+    EXPECT_EQ(0, copy3.compare(this->rdata_ds_like));
+
+    // Self assignment
+    copy = *&copy;
+    EXPECT_EQ(0, copy.compare(this->rdata_ds_like));
+}
+
+TYPED_TEST(Rdata_DS_LIKE_Test, getTag_DS_LIKE) {
+    EXPECT_EQ(12892, this->rdata_ds_like.getTag());
+}
+
+TYPED_TEST(Rdata_DS_LIKE_Test, toWireRenderer) {
+    Rdata_DS_LIKE_Test<TypeParam>::renderer.skip(2);
+    TypeParam rdata_ds_like(this->ds_like_txt);
+    rdata_ds_like.toWire(this->renderer);
+
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("rdata_ds_fromWire", data);
+    matchWireData(&data[2], data.size() - 2,
+                  static_cast<const uint8_t*>(this->renderer.getData()) + 2,
+                  this->renderer.getLength() - 2);
+}
+
+TYPED_TEST(Rdata_DS_LIKE_Test, toWireBuffer) {
+    TypeParam rdata_ds_like(this->ds_like_txt);
+    rdata_ds_like.toWire(this->obuffer);
+}
+
+string ds_like_txt1("12892 5 2 F1E184C0E1D615D20EB3C223ACED3B03C773DD952D"
+                   "5F0EB5C777586DE18DA6B5");
+// different tag
+string ds_like_txt2("12893 5 2 F1E184C0E1D615D20EB3C223ACED3B03C773DD952D"
+                   "5F0EB5C777586DE18DA6B5");
+// different algorithm
+string ds_like_txt3("12892 6 2 F1E184C0E1D615D20EB3C223ACED3B03C773DD952D"
+                   "5F0EB5C777586DE18DA6B5");
+// different digest type
+string ds_like_txt4("12892 5 3 F1E184C0E1D615D20EB3C223ACED3B03C773DD952D"
+                   "5F0EB5C777586DE18DA6B5");
+// different digest
+string ds_like_txt5("12892 5 2 F2E184C0E1D615D20EB3C223ACED3B03C773DD952D"
+                   "5F0EB5C777586DE18DA6B5");
+// different digest length
+string ds_like_txt6("12892 5 2 F2E184C0E1D615D20EB3C223ACED3B03C773DD952D"
+                   "5F0EB5C777586DE18DA6B555");
+
+TYPED_TEST(Rdata_DS_LIKE_Test, compare) {
+    const string ds_like_txt1(
+        "12892 5 2 F1E184C0E1D615D20EB3C223ACED3B03C773DD952D"
+        "5F0EB5C777586DE18DA6B5");
+    // different tag
+    const string ds_like_txt2(
+        "12893 5 2 F1E184C0E1D615D20EB3C223ACED3B03C773DD952D"
+        "5F0EB5C777586DE18DA6B5");
+    // different algorithm
+    const string ds_like_txt3(
+        "12892 6 2 F1E184C0E1D615D20EB3C223ACED3B03C773DD952D"
+        "5F0EB5C777586DE18DA6B5");
+    // different digest type
+    const string ds_like_txt4(
+        "12892 5 3 F1E184C0E1D615D20EB3C223ACED3B03C773DD952D"
+        "5F0EB5C777586DE18DA6B5");
+    // different digest
+    const string ds_like_txt5(
+        "12892 5 2 F2E184C0E1D615D20EB3C223ACED3B03C773DD952D"
+        "5F0EB5C777586DE18DA6B5");
+    // different digest length
+    const string ds_like_txt6(
+        "12892 5 2 F2E184C0E1D615D20EB3C223ACED3B03C773DD952D"
+        "5F0EB5C777586DE18DA6B555");
+
+    // trivial case: self equivalence
+    EXPECT_EQ(0, TypeParam(this->ds_like_txt).
+              compare(TypeParam(this->ds_like_txt)));
+
+    // non-equivalence tests
+    EXPECT_LT(TypeParam(ds_like_txt1).compare(TypeParam(ds_like_txt2)), 0);
+    EXPECT_GT(TypeParam(ds_like_txt2).compare(TypeParam(ds_like_txt1)), 0);
+
+    EXPECT_LT(TypeParam(ds_like_txt1).compare(TypeParam(ds_like_txt3)), 0);
+    EXPECT_GT(TypeParam(ds_like_txt3).compare(TypeParam(ds_like_txt1)), 0);
+
+    EXPECT_LT(TypeParam(ds_like_txt1).compare(TypeParam(ds_like_txt4)), 0);
+    EXPECT_GT(TypeParam(ds_like_txt4).compare(TypeParam(ds_like_txt1)), 0);
+
+    EXPECT_LT(TypeParam(ds_like_txt1).compare(TypeParam(ds_like_txt5)), 0);
+    EXPECT_GT(TypeParam(ds_like_txt5).compare(TypeParam(ds_like_txt1)), 0);
+
+    EXPECT_LT(TypeParam(ds_like_txt1).compare(TypeParam(ds_like_txt6)), 0);
+    EXPECT_GT(TypeParam(ds_like_txt6).compare(TypeParam(ds_like_txt1)), 0);
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(this->rdata_ds_like.compare(*this->rdata_nomatch),
+                 bad_cast);
+}
+
+}
diff --git a/src/lib/dns/tests/rdata_hinfo_unittest.cc b/src/lib/dns/tests/rdata_hinfo_unittest.cc
new file mode 100644
index 0000000..1830f05
--- /dev/null
+++ b/src/lib/dns/tests/rdata_hinfo_unittest.cc
@@ -0,0 +1,154 @@
+// Copyright (C) 2011-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using namespace isc::dns::rdata::generic;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_HINFO_Test : public RdataTest {
+};
+
+static uint8_t hinfo_rdata[] = {0x07,0x50,0x65,0x6e,0x74,0x69,0x75,0x6d,0x05,
+    0x4c,0x69,0x6e,0x75,0x78};
+static const char *hinfo_str = "\"Pentium\" \"Linux\"";
+static const char *hinfo_str1 = "\"Pen\\\"tium\" \"Linux\"";
+
+static const char *hinfo_str_equal = "\"Pentium\"\"Linux\"";
+static const char *hinfo_str_small1 = "\"Lentium\" \"Linux\"";
+static const char *hinfo_str_small2 = "\"Pentium\" \"Kinux\"";
+static const char *hinfo_str_large1 = "\"Qentium\" \"Linux\"";
+static const char *hinfo_str_large2 = "\"Pentium\" \"UNIX\"";
+
+TEST_F(Rdata_HINFO_Test, createFromText) {
+    HINFO hinfo(hinfo_str);
+    EXPECT_EQ(string("Pentium"), hinfo.getCPU());
+    EXPECT_EQ(string("Linux"), hinfo.getOS());
+    // Test the text with double quotes in the middle of string
+    HINFO hinfo1(hinfo_str1);
+    EXPECT_EQ(string("Pen\\\"tium"), hinfo1.getCPU());
+}
+
+TEST_F(Rdata_HINFO_Test, badText) {
+    // Only 2 fields must exist
+    EXPECT_THROW(const HINFO hinfo("\"Pentium\"\"Linux\"\"Computer\""),
+                 InvalidRdataText);
+    EXPECT_THROW(const HINFO hinfo("\"Pentium\" \"Linux\" \"Computer\""),
+                 InvalidRdataText);
+    // Field cannot be missing
+    EXPECT_THROW(const HINFO hinfo("Pentium"), InvalidRdataText);
+    // The <character-string> cannot exceed 255 characters
+    string hinfo_str;
+    for (int i = 0; i < 257; ++i) {
+        hinfo_str += 'A';
+    }
+    hinfo_str += " Linux";
+    EXPECT_THROW(const HINFO hinfo(hinfo_str), CharStringTooLong);
+}
+
+TEST_F(Rdata_HINFO_Test, createFromWire) {
+    InputBuffer input_buffer(hinfo_rdata, sizeof(hinfo_rdata));
+    HINFO hinfo(input_buffer, sizeof(hinfo_rdata));
+    EXPECT_EQ(string("Pentium"), hinfo.getCPU());
+    EXPECT_EQ(string("Linux"), hinfo.getOS());
+}
+
+TEST_F(Rdata_HINFO_Test, createFromLexer) {
+    HINFO rdata_hinfo(hinfo_str);
+    EXPECT_EQ(0, rdata_hinfo.compare(
+        *test::createRdataUsingLexer(RRType::HINFO(), RRClass::IN(),
+                                     hinfo_str)));
+    EXPECT_EQ(0, rdata_hinfo.compare(
+        *test::createRdataUsingLexer(RRType::HINFO(), RRClass::IN(),
+                                     "\"Pentium\"\"Linux\"")));
+    // Exceptions cause NULL to be returned.
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::HINFO(), RRClass::IN(),
+                                             "\"Pentium\"\"Linux\""
+                                             "\"Computer\""));
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::HINFO(), RRClass::IN(),
+                                             "\"Pentium\" \"Linux\" "
+                                             "\"Computer\""));
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::HINFO(), RRClass::IN(),
+                                             "\"Pentium\""));
+}
+
+TEST_F(Rdata_HINFO_Test, toText) {
+    HINFO hinfo(hinfo_str);
+    EXPECT_EQ(hinfo_str, hinfo.toText());
+
+    // will add quotes even if they were not in the original input
+    EXPECT_EQ("\"a\" \"b\"", HINFO("a b").toText());
+    // will not add additional quotes
+    EXPECT_EQ("\"a\" \"b\"", HINFO("\"a\" \"b\"").toText());
+    // And make sure escaped quotes and spaces are left intact
+    EXPECT_EQ("\"a\\\"\" \"b c\"", HINFO("\"a\\\"\" \"b c\"").toText());
+}
+
+TEST_F(Rdata_HINFO_Test, toWire) {
+    HINFO hinfo(hinfo_str);
+
+    hinfo.toWire(obuffer);
+    matchWireData(hinfo_rdata, sizeof (hinfo_rdata),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_HINFO_Test, toWireRenderer) {
+    HINFO hinfo(hinfo_str);
+
+    hinfo.toWire(renderer);
+    matchWireData(hinfo_rdata, sizeof (hinfo_rdata),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_HINFO_Test, compare) {
+    HINFO hinfo(hinfo_str);
+    HINFO hinfo_small1(hinfo_str_small1);
+    HINFO hinfo_small2(hinfo_str_small2);
+    HINFO hinfo_large1(hinfo_str_large1);
+    HINFO hinfo_large2(hinfo_str_large2);
+
+    EXPECT_EQ(0, hinfo.compare(HINFO(hinfo_str)));
+    EXPECT_EQ(0, hinfo.compare(HINFO(hinfo_str_equal)));
+    EXPECT_EQ(1, hinfo.compare(HINFO(hinfo_str_small1)));
+    EXPECT_EQ(1, hinfo.compare(HINFO(hinfo_str_small2)));
+    EXPECT_EQ(-1, hinfo.compare(HINFO(hinfo_str_large1)));
+    EXPECT_EQ(-1, hinfo.compare(HINFO(hinfo_str_large2)));
+}
+
+// Copy/assign test
+TEST_F(Rdata_HINFO_Test, copy) {
+    HINFO hinfo(hinfo_str);
+    HINFO hinfo2(hinfo);
+    HINFO hinfo3 = hinfo;
+
+    EXPECT_EQ(0, hinfo.compare(hinfo2));
+    EXPECT_EQ(0, hinfo.compare(hinfo3));
+
+    hinfo3 = hinfo;
+    EXPECT_EQ(0, hinfo.compare(hinfo3));
+}
+
+}
diff --git a/src/lib/dns/tests/rdata_in_a_unittest.cc b/src/lib/dns/tests/rdata_in_a_unittest.cc
new file mode 100644
index 0000000..809cfb5
--- /dev/null
+++ b/src/lib/dns/tests/rdata_in_a_unittest.cc
@@ -0,0 +1,159 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <dns/rdataclass.h>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/master_lexer.h>
+#include <dns/master_loader.h>
+#include <dns/rdata.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+#include <sstream>
+
+#include <arpa/inet.h>
+#include <sys/socket.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_IN_A_Test : public RdataTest {
+protected:
+    Rdata_IN_A_Test() : rdata_in_a("192.0.2.1") {}
+
+    void checkFromTextIN_A(const std::string& rdata_txt,
+                       bool throw_str_version = true,
+                       bool throw_lexer_version = true) {
+        checkFromText<in::A, InvalidRdataText, InvalidRdataText>(
+            rdata_txt, rdata_in_a, throw_str_version, throw_lexer_version);
+    }
+
+    const in::A rdata_in_a;
+};
+
+const uint8_t wiredata_in_a[] = { 192, 0, 2, 1 };
+
+TEST_F(Rdata_IN_A_Test, createFromText) {
+    // Normal case: no exception for either case, so the exception type
+    // doesn't matter.
+    checkFromText<in::A, isc::Exception, isc::Exception>("192.0.2.1",
+                                                         rdata_in_a, false,
+                                                         false);
+
+    // should reject an abbreviated form of IPv4 address
+    checkFromTextIN_A("10.1");
+    // or an IPv6 address
+    checkFromTextIN_A("2001:db8::1234");
+    // or any meaningless text as an IP address
+    checkFromTextIN_A("xxx");
+
+    // NetBSD's inet_pton accepts trailing space after an IPv4 address, which
+    // would confuse some of the tests below.  We check the case differently
+    // in these cases depending on the strictness of inet_pton (most
+    // implementations seem to be stricter).
+    uint8_t v4addr_buf[4];
+    const bool reject_extra_space =
+        inet_pton(AF_INET, "192.0.2.1 ", v4addr_buf) == 0;
+
+    // trailing white space: only string version throws
+    checkFromTextIN_A("192.0.2.1  ", reject_extra_space, false);
+    // same for beginning white space.
+    checkFromTextIN_A("  192.0.2.1", true, false);
+    // same for trailing non-space garbage (note that lexer version still
+    // ignore it; it's expected to be detected at a higher layer).
+    checkFromTextIN_A("192.0.2.1 xxx", reject_extra_space, false);
+
+    // nul character after a valid textual representation.
+    string nul_after_addr = "192.0.2.1";
+    nul_after_addr.push_back(0);
+    checkFromTextIN_A(nul_after_addr, true, true);
+
+    // a valid address surrounded by parentheses; only okay with lexer
+    checkFromTextIN_A("(192.0.2.1)", true, false);
+
+    // input that would cause lexer-specific error; it's bad text as an
+    // address so should result in the string version, too.
+    checkFromText<in::A, InvalidRdataText, MasterLexer::LexerError>(
+        ")192.0.2.1", rdata_in_a);
+}
+
+TEST_F(Rdata_IN_A_Test, createFromWire) {
+    // Valid data
+    EXPECT_EQ(0, rdata_in_a.compare(
+                  *rdataFactoryFromFile(RRType::A(), RRClass::IN(),
+                                        "rdata_in_a_fromWire")));
+    // RDLENGTH is too short
+    EXPECT_THROW(rdataFactoryFromFile(RRType::A(), RRClass::IN(),
+                                      "rdata_in_a_fromWire", 6),
+                 DNSMessageFORMERR);
+    // RDLENGTH is too long
+    EXPECT_THROW(rdataFactoryFromFile(RRType::A(), RRClass::IN(),
+                                      "rdata_in_a_fromWire", 12),
+                 DNSMessageFORMERR);
+    // buffer too short.
+    EXPECT_THROW(rdataFactoryFromFile(RRType::A(), RRClass::IN(),
+                                      "rdata_in_a_fromWire", 19),
+                 DNSMessageFORMERR);
+}
+
+TEST_F(Rdata_IN_A_Test, toWireBuffer) {
+    rdata_in_a.toWire(obuffer);
+    matchWireData(wiredata_in_a, sizeof (wiredata_in_a),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_IN_A_Test, toWireRenderer) {
+    rdata_in_a.toWire(renderer);
+    matchWireData(wiredata_in_a, sizeof (wiredata_in_a),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_IN_A_Test, toText) {
+    EXPECT_EQ("192.0.2.1", rdata_in_a.toText());
+
+    // this shouldn't make the code crash
+    const string longaddr("255.255.255.255");
+    EXPECT_EQ(longaddr, in::A(longaddr).toText());
+}
+
+TEST_F(Rdata_IN_A_Test, compare) {
+    const in::A small1("1.1.1.1");
+    const in::A small2("1.2.3.4");
+    const in::A large1("255.255.255.255");
+    const in::A large2("4.3.2.1");
+
+    // trivial case: self equivalence
+    // cppcheck-suppress uselessCallsCompare
+    EXPECT_EQ(0, small1.compare(small1));
+
+    // confirm these are compared as unsigned values
+    EXPECT_GT(0, small1.compare(large1));
+    EXPECT_LT(0, large1.compare(small1));
+
+    // confirm these are compared in network byte order
+    EXPECT_GT(0, small2.compare(large2));
+    EXPECT_LT(0, large2.compare(small2));
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(rdata_in_a.compare(*RdataTest::rdata_nomatch), bad_cast); 
+}
+}
diff --git a/src/lib/dns/tests/rdata_in_aaaa_unittest.cc b/src/lib/dns/tests/rdata_in_aaaa_unittest.cc
new file mode 100644
index 0000000..cc7b07d
--- /dev/null
+++ b/src/lib/dns/tests/rdata_in_aaaa_unittest.cc
@@ -0,0 +1,151 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_IN_AAAA_Test : public RdataTest {
+protected:
+    Rdata_IN_AAAA_Test() : rdata_in_aaaa("2001:db8::1234") {}
+
+    // Common check to see the result of in::A Rdata construction either from
+    // std::string or with MasterLexer object.  If it's expected to succeed
+    // the result should be identical to the commonly used test data
+    // (rdata_in_a); otherwise it should result in the exception specified as
+    // the template parameter.
+    void checkFromTextIN_AAAA(const string& in_aaaa_txt,
+                              bool throw_str_version = true,
+                              bool throw_lexer_version = true)
+    {
+        checkFromText<in::AAAA, InvalidRdataText, InvalidRdataText>(
+            in_aaaa_txt, rdata_in_aaaa, throw_str_version,
+            throw_lexer_version);
+    }
+
+    const in::AAAA rdata_in_aaaa;
+};
+
+const uint8_t wiredata_in_aaaa[] = {
+    0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x12, 0x34 };
+
+TEST_F(Rdata_IN_AAAA_Test, createFromText) {
+    // Normal case: no exception for either case, so the exception type
+    // doesn't matter.
+    checkFromText<in::AAAA, isc::Exception, isc::Exception>(
+        "2001:db8::1234", rdata_in_aaaa, false, false);
+
+    // should reject an IP4 address.
+    checkFromTextIN_AAAA("192.0.2.1");
+    // or any meaningless text as an IPv6 address
+    checkFromTextIN_AAAA("xxx");
+
+    // trailing white space: only string version throws
+    checkFromTextIN_AAAA("2001:db8::1234  ", true, false);
+    // same for beginning white space.
+    checkFromTextIN_AAAA("  2001:db8::1234", true, false);
+    // same for trailing non-space garbage (note that lexer version still
+    // ignore it; it's expected to be detected at a higher layer).
+    checkFromTextIN_AAAA("2001:db8::1234 xxx", true, false);
+
+    // nul character after a valid textual representation.
+    string nul_after_addr = "2001:db8::1234";
+    nul_after_addr.push_back(0);
+    checkFromTextIN_AAAA(nul_after_addr, true, true);
+
+    // a valid address surrounded by parentheses; only okay with lexer
+    checkFromTextIN_AAAA("(2001:db8::1234)", true, false);
+
+    // input that would cause lexer-specific error; it's bad text as an
+    // address so should result in the string version, too.
+    checkFromText<in::AAAA, InvalidRdataText, MasterLexer::LexerError>(
+        ")2001:db8::1234", rdata_in_aaaa);
+}
+
+TEST_F(Rdata_IN_AAAA_Test, createFromWire) {
+    // Valid data
+    EXPECT_EQ(0, rdata_in_aaaa.compare(
+                  *rdataFactoryFromFile(RRType::AAAA(), RRClass::IN(),
+                                        "rdata_in_aaaa_fromWire")));
+    // RDLENGTH is too short
+    EXPECT_THROW(rdataFactoryFromFile(RRType::AAAA(), RRClass::IN(),
+                                      "rdata_in_aaaa_fromWire", 18),
+                 DNSMessageFORMERR);
+    // RDLENGTH is too long
+    EXPECT_THROW(rdataFactoryFromFile(RRType::AAAA(), RRClass::IN(),
+                                      "rdata_in_aaaa_fromWire", 36),
+                 DNSMessageFORMERR);
+    // buffer too short.
+    EXPECT_THROW(rdataFactoryFromFile(RRType::AAAA(), RRClass::IN(),
+                                      "rdata_in_aaaa_fromWire", 55),
+                 DNSMessageFORMERR);
+}
+
+TEST_F(Rdata_IN_AAAA_Test, createFromLexer) {
+    EXPECT_EQ(0, rdata_in_aaaa.compare(
+        *test::createRdataUsingLexer(RRType::AAAA(), RRClass::IN(),
+                                     "2001:db8::1234")));
+}
+
+TEST_F(Rdata_IN_AAAA_Test, toWireBuffer) {
+    rdata_in_aaaa.toWire(obuffer);
+    matchWireData(wiredata_in_aaaa, sizeof (wiredata_in_aaaa),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_IN_AAAA_Test, toWireRenderer) {
+    rdata_in_aaaa.toWire(renderer);
+    matchWireData(wiredata_in_aaaa, sizeof (wiredata_in_aaaa),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_IN_AAAA_Test, toText) {
+    EXPECT_EQ("2001:db8::1234", rdata_in_aaaa.toText());
+}
+
+TEST_F(Rdata_IN_AAAA_Test, compare) {
+    in::AAAA small1("::1");
+    in::AAAA small2("1:2:3:4:5:6:7:8");
+    in::AAAA large1("ffff::");
+    in::AAAA large2("8:7:6:5:4:3:2:1");
+
+    // trivial case: self equivalence
+    // cppcheck-suppress uselessCallsCompare
+    EXPECT_EQ(0, small1.compare(small1));
+
+    // confirm these are compared as unsigned values
+    EXPECT_GT(0, small1.compare(large1));
+    EXPECT_LT(0, large1.compare(small1));
+
+    // confirm these are compared in network byte order
+    EXPECT_GT(0, small2.compare(large2));
+    EXPECT_LT(0, large2.compare(small2));
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(rdata_in_aaaa.compare(*RdataTest::rdata_nomatch), bad_cast); 
+}
+}
diff --git a/src/lib/dns/tests/rdata_minfo_unittest.cc b/src/lib/dns/tests/rdata_minfo_unittest.cc
new file mode 100644
index 0000000..35ff55c
--- /dev/null
+++ b/src/lib/dns/tests/rdata_minfo_unittest.cc
@@ -0,0 +1,230 @@
+// Copyright (C) 2011-2019 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <string>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::util;
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_MINFO_Test : public RdataTest {
+protected:
+    Rdata_MINFO_Test():
+        minfo_txt("rmailbox.example.com. emailbox.example.com."),
+        minfo_txt2("root.example.com. emailbox.example.com."),
+        too_long_label("01234567890123456789012345678901234567"
+                       "89012345678901234567890123."),
+        rdata_minfo(minfo_txt),
+        rdata_minfo2(minfo_txt2)
+    {}
+
+    void checkFromText_None(const string& rdata_str) {
+        checkFromText<generic::MINFO, isc::Exception, isc::Exception>(
+            rdata_str, rdata_minfo, false, false);
+    }
+
+    void checkFromText_LexerError(const string& rdata_str) {
+        checkFromText
+            <generic::MINFO, InvalidRdataText, MasterLexer::LexerError>(
+            rdata_str, rdata_minfo, true, true);
+    }
+
+    void checkFromText_TooLongLabel(const string& rdata_str) {
+        checkFromText<generic::MINFO, TooLongLabel, TooLongLabel>(
+            rdata_str, rdata_minfo, true, true);
+    }
+
+    void checkFromText_BadString(const string& rdata_str) {
+        checkFromText<generic::MINFO, InvalidRdataText, isc::Exception>(
+            rdata_str, rdata_minfo, true, false);
+    }
+
+    void checkFromText_EmptyLabel(const string& rdata_str) {
+        checkFromText<generic::MINFO, EmptyLabel, EmptyLabel>(
+            rdata_str, rdata_minfo, true, true);
+    }
+
+    void checkFromText_MissingOrigin(const string& rdata_str) {
+        checkFromText
+            <generic::MINFO, MissingNameOrigin, MissingNameOrigin>(
+                rdata_str, rdata_minfo, true, true);
+    }
+
+    void checkFromText_Origin(const string& rdata_str, const Name* origin) {
+        checkFromText<generic::MINFO, MissingNameOrigin, isc::Exception>(
+            rdata_str, rdata_minfo, true, false, origin);
+    }
+
+    const string minfo_txt;
+    const string minfo_txt2;
+    const string too_long_label;
+    const generic::MINFO rdata_minfo;
+    const generic::MINFO rdata_minfo2;
+};
+
+
+TEST_F(Rdata_MINFO_Test, createFromText) {
+    EXPECT_EQ(Name("rmailbox.example.com."), rdata_minfo.getRmailbox());
+    EXPECT_EQ(Name("emailbox.example.com."), rdata_minfo.getEmailbox());
+
+    EXPECT_EQ(Name("root.example.com."), rdata_minfo2.getRmailbox());
+    EXPECT_EQ(Name("emailbox.example.com."), rdata_minfo2.getEmailbox());
+
+    checkFromText_None(minfo_txt);
+
+    // origin defined for lexer constructor, but not string constructor
+    const Name origin("example.com");
+    checkFromText_Origin("rmailbox emailbox", &origin);
+
+    // lexer constructor accepts extra text, but string constructor doesn't
+    checkFromText_BadString("rmailbox.example.com. emailbox.example.com. "
+                            "extra.example.com.");
+}
+
+TEST_F(Rdata_MINFO_Test, badText) {
+    // too long names
+    checkFromText_TooLongLabel("root.example.com."  + too_long_label +
+                               " emailbox.example.com.");
+    checkFromText_TooLongLabel("root.example.com. emailbox.example.com." +
+                               too_long_label);
+
+    // invalid names
+    checkFromText_EmptyLabel("root..example.com. emailbox.example.com.");
+    checkFromText_EmptyLabel("root.example.com. emailbox..example.com.");
+
+    // missing name
+    checkFromText_LexerError("root.example.com.");
+
+    // missing origin
+    checkFromText_MissingOrigin("root.example.com emailbox.example.com.");
+    checkFromText_MissingOrigin("root.example.com. emailbox.example.com");
+}
+
+TEST_F(Rdata_MINFO_Test, createFromWire) {
+    // uncompressed names
+    EXPECT_EQ(0, rdata_minfo.compare(
+                  *rdataFactoryFromFile(RRType::MINFO(), RRClass::IN(),
+                                     "rdata_minfo_fromWire1.wire")));
+    // compressed names
+    EXPECT_EQ(0, rdata_minfo.compare(
+                  *rdataFactoryFromFile(RRType::MINFO(), RRClass::IN(),
+                                     "rdata_minfo_fromWire2.wire", 15)));
+    // RDLENGTH is too short
+    EXPECT_THROW(rdataFactoryFromFile(RRType::MINFO(), RRClass::IN(),
+                                     "rdata_minfo_fromWire3.wire"),
+                 InvalidRdataLength);
+    // RDLENGTH is too long
+    EXPECT_THROW(rdataFactoryFromFile(RRType::MINFO(), RRClass::IN(),
+                                      "rdata_minfo_fromWire4.wire"),
+                 InvalidRdataLength);
+    // bogus rmailbox name, the error should be detected in the name
+    // constructor
+    EXPECT_THROW(rdataFactoryFromFile(RRType::MINFO(), RRClass::IN(),
+                                      "rdata_minfo_fromWire5.wire"),
+                 DNSMessageFORMERR);
+    // bogus emailbox name, the error should be detected in the name
+    // constructor
+    EXPECT_THROW(rdataFactoryFromFile(RRType::MINFO(), RRClass::IN(),
+                                      "rdata_minfo_fromWire6.wire"),
+                 DNSMessageFORMERR);
+}
+
+TEST_F(Rdata_MINFO_Test, assignment) {
+    generic::MINFO copy((string(minfo_txt2)));
+    copy = rdata_minfo;
+    EXPECT_EQ(0, copy.compare(rdata_minfo));
+
+    // Check if the copied data is valid even after the original is deleted
+    generic::MINFO* copy2 = new generic::MINFO(rdata_minfo);
+    generic::MINFO copy3((string(minfo_txt2)));
+    copy3 = *copy2;
+    delete copy2;
+    EXPECT_EQ(0, copy3.compare(rdata_minfo));
+
+    // Self assignment
+    copy = *&copy;
+    EXPECT_EQ(0, copy.compare(rdata_minfo));
+}
+
+TEST_F(Rdata_MINFO_Test, toWireBuffer) {
+    rdata_minfo.toWire(obuffer);
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("rdata_minfo_toWireUncompressed1.wire", data);
+    matchWireData(&data[0], data.size(),
+                  obuffer.getData(), obuffer.getLength());
+
+    obuffer.clear();
+    rdata_minfo2.toWire(obuffer);
+    vector<unsigned char> data2;
+    UnitTestUtil::readWireData("rdata_minfo_toWireUncompressed2.wire", data2);
+    matchWireData(&data2[0], data2.size(),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_MINFO_Test, toWireRenderer) {
+    rdata_minfo.toWire(renderer);
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("rdata_minfo_toWire1.wire", data);
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+
+    renderer.clear();
+    rdata_minfo2.toWire(renderer);
+    vector<unsigned char> data2;
+    UnitTestUtil::readWireData("rdata_minfo_toWire2.wire", data2);
+    matchWireData(&data2[0], data2.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_MINFO_Test, toText) {
+    EXPECT_EQ(minfo_txt, rdata_minfo.toText());
+    EXPECT_EQ(minfo_txt2, rdata_minfo2.toText());
+}
+
+TEST_F(Rdata_MINFO_Test, compare) {
+    // check reflexivity
+    EXPECT_EQ(0, rdata_minfo.compare(rdata_minfo));
+
+    // names must be compared in case-insensitive manner
+    EXPECT_EQ(0, rdata_minfo.compare(generic::MINFO("RMAILBOX.example.com. "
+                                                  "emailbox.EXAMPLE.com.")));
+
+    // another MINFO whose rmailbox name is larger than that of rdata_minfo.
+    const generic::MINFO large1_minfo("zzzzzzzz.example.com. "
+                                      "emailbox.example.com.");
+    EXPECT_GT(0, rdata_minfo.compare(large1_minfo));
+    EXPECT_LT(0, large1_minfo.compare(rdata_minfo));
+
+    // another MINFO whose emailbox name is larger than that of rdata_minfo.
+    const generic::MINFO large2_minfo("rmailbox.example.com. "
+                                      "zzzzzzzzzzz.example.com.");
+    EXPECT_GT(0, rdata_minfo.compare(large2_minfo));
+    EXPECT_LT(0, large2_minfo.compare(rdata_minfo));
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(rdata_minfo.compare(*RdataTest::rdata_nomatch), bad_cast);
+}
+}
diff --git a/src/lib/dns/tests/rdata_mx_unittest.cc b/src/lib/dns/tests/rdata_mx_unittest.cc
new file mode 100644
index 0000000..b11411f
--- /dev/null
+++ b/src/lib/dns/tests/rdata_mx_unittest.cc
@@ -0,0 +1,147 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_MX_Test : public RdataTest {
+public:
+    Rdata_MX_Test() :
+        rdata_mx(10, Name("mx.example.com"))
+    {}
+
+    const generic::MX rdata_mx;
+};
+
+TEST_F(Rdata_MX_Test, createFromText) {
+    const generic::MX rdata_mx2("10 mx.example.com.");
+    EXPECT_EQ(0, rdata_mx2.compare(rdata_mx));
+}
+
+TEST_F(Rdata_MX_Test, badText) {
+    EXPECT_THROW(const generic::MX rdata_mx("99999999 mx."), InvalidRdataText);
+    EXPECT_THROW(const generic::MX rdata_mx("10"), InvalidRdataText);
+    EXPECT_THROW(const generic::MX rdata_mx("SPOON"), InvalidRdataText);
+    EXPECT_THROW(const generic::MX rdata_mx("10 mx. example.com."),
+                 InvalidRdataText);
+    // No origin and relative
+    EXPECT_THROW(const generic::MX rdata_mx("10 mx.example.com"),
+                 MissingNameOrigin);
+    // Extra text at end of line
+    EXPECT_THROW(const generic::MX rdata_mx("10 mx.example.com. extra."),
+                 InvalidRdataText);
+}
+
+TEST_F(Rdata_MX_Test, copy) {
+    const generic::MX rdata_mx2(rdata_mx);
+    EXPECT_EQ(0, rdata_mx.compare(rdata_mx2));
+}
+
+TEST_F(Rdata_MX_Test, createFromWire) {
+    EXPECT_EQ(0, rdata_mx.compare(
+                  *rdataFactoryFromFile(RRType("MX"), RRClass("IN"),
+                                        "rdata_mx_fromWire")));
+    // TBD: more tests
+}
+
+TEST_F(Rdata_MX_Test, createFromLexer) {
+    EXPECT_EQ(0, rdata_mx.compare(
+        *test::createRdataUsingLexer(RRType::MX(), RRClass::IN(),
+                                     "10 mx.example.com.")));
+
+    // test::createRdataUsingLexer() constructs relative to
+    // "example.org." origin.
+    EXPECT_EQ(0, generic::MX("10 mx2.example.org.").compare(
+        *test::createRdataUsingLexer(RRType::MX(), RRClass::IN(),
+                                     "10 mx2")));
+
+    // Exceptions cause NULL to be returned.
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::MX(), RRClass::IN(),
+                                             "10 mx. example.com."));
+
+    // 65536 is larger than maximum possible preference
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::MX(), RRClass::IN(),
+                                             "65536 mx.example.com."));
+
+    // Extra text at end of line
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::MX(), RRClass::IN(),
+                                             "10 mx.example.com. extra."));
+}
+
+TEST_F(Rdata_MX_Test, toWireRenderer) {
+    renderer.writeName(Name("example.com"));
+    rdata_mx.toWire(renderer);
+
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("rdata_mx_toWire1", data);
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_MX_Test, toWireBuffer) {
+    Name("example.com").toWire(obuffer);
+    rdata_mx.toWire(obuffer);
+
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("rdata_mx_toWire2", data);
+    matchWireData(&data[0], data.size(),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_MX_Test, toText) {
+    EXPECT_EQ("10 mx.example.com.", rdata_mx.toText());
+}
+
+TEST_F(Rdata_MX_Test, getMXName) {
+    EXPECT_EQ(Name("mx.example.com."), rdata_mx.getMXName());
+}
+
+TEST_F(Rdata_MX_Test, getMXPref) {
+    EXPECT_EQ(10, rdata_mx.getMXPref());
+}
+
+TEST_F(Rdata_MX_Test, compare) {
+    generic::MX small1(1, Name("mx.example.com"));
+    generic::MX small2(10, Name("mx.example.com"));
+    generic::MX large1(65535, Name("mx.example.com"));
+    generic::MX large2(256, Name("mx.example.com"));
+
+    // trivial case: self equivalence
+    // cppcheck-suppress uselessCallsCompare
+    EXPECT_EQ(0, small1.compare(small1));
+
+    // confirm these are compared as unsigned values
+    EXPECT_GT(0, small1.compare(large1));
+    EXPECT_LT(0, large1.compare(small1));
+
+    // confirm these are compared in network byte order
+    EXPECT_GT(0, small2.compare(large2));
+    EXPECT_LT(0, large2.compare(small2));
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(rdata_mx.compare(*rdata_nomatch), bad_cast); 
+}
+}
diff --git a/src/lib/dns/tests/rdata_naptr_unittest.cc b/src/lib/dns/tests/rdata_naptr_unittest.cc
new file mode 100644
index 0000000..4ce008e
--- /dev/null
+++ b/src/lib/dns/tests/rdata_naptr_unittest.cc
@@ -0,0 +1,239 @@
+// Copyright (C) 2011-2015,2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using namespace isc::dns::rdata::generic;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_NAPTR_Test : public RdataTest {
+};
+
+// 10 100 "S" "SIP+D2U" "" _sip._udp.example.com.
+static uint8_t naptr_rdata[] = {0x00,0x0a,0x00,0x64,0x01,0x53,0x07,0x53,0x49,
+    0x50,0x2b,0x44,0x32,0x55,0x00,0x04,0x5f,0x73,0x69,0x70,0x04,0x5f,0x75,0x64,
+    0x70,0x07,0x65,0x78,0x61,0x6d,0x70,0x6c,0x65,0x03,0x63,0x6f,0x6d,0x00};
+
+static const char *naptr_str =
+    "10 100 \"S\" \"SIP+D2U\" \"\" _sip._udp.example.com.";
+static const char *naptr_str2 =
+    "10 100 S SIP+D2U \"\" _sip._udp.example.com.";
+
+static const char *naptr_str_small1 =
+    "9 100 \"S\" \"SIP+D2U\" \"\" _sip._udp.example.com.";
+static const char *naptr_str_small2 =
+    "10 90 \"S\" \"SIP+D2U\" \"\" _sip._udp.example.com.";
+static const char *naptr_str_small3 =
+    "10 100 \"R\" \"SIP+D2U\" \"\" _sip._udp.example.com.";
+static const char *naptr_str_small4 =
+    "10 100 \"S\" \"SIP+C2U\" \"\" _sip._udp.example.com.";
+static const char *naptr_str_small5 =
+    "10 100 \"S\" \"SIP+D2U\" \"\" _rip._udp.example.com.";
+
+static const char *naptr_str_large1 =
+    "11 100 \"S\" \"SIP+D2U\" \"\" _sip._udp.example.com.";
+static const char *naptr_str_large2 =
+    "10 110 \"S\" \"SIP+D2U\" \"\" _sip._udp.example.com.";
+static const char *naptr_str_large3 =
+    "10 100 \"T\" \"SIP+D2U\" \"\" _sip._udp.example.com.";
+static const char *naptr_str_large4 =
+    "10 100 \"S\" \"SIP+E2U\" \"\" _sip._udp.example.com.";
+static const char *naptr_str_large5 =
+    "10 100 \"S\" \"SIP+D2U\" \"\" _tip._udp.example.com.";
+
+TEST_F(Rdata_NAPTR_Test, createFromText) {
+    NAPTR naptr(naptr_str);
+    EXPECT_EQ(10, naptr.getOrder());
+    EXPECT_EQ(100, naptr.getPreference());
+    EXPECT_EQ(string("S"), naptr.getFlags());
+    EXPECT_EQ(string("SIP+D2U"), naptr.getServices());
+    EXPECT_EQ(string(""), naptr.getRegexp());
+    EXPECT_EQ(Name("_sip._udp.example.com."), naptr.getReplacement());
+
+    // Test <char-string> that separated by space
+    NAPTR naptr2(naptr_str2);
+    EXPECT_EQ(string("S"), naptr2.getFlags());
+    EXPECT_EQ(string("SIP+D2U"), naptr2.getServices());
+}
+
+TEST_F(Rdata_NAPTR_Test, badText) {
+    // Order number cannot exceed 65535
+    EXPECT_THROW(const NAPTR naptr("65536 10 S SIP \"\" _sip._udp.example.com."),
+                 InvalidRdataText);
+    // Preference number cannot exceed 65535
+    EXPECT_THROW(const NAPTR naptr("100 65536 S SIP \"\" _sip._udp.example.com."),
+                 InvalidRdataText);
+    // No regexp given
+    EXPECT_THROW(const NAPTR naptr("100 10 S SIP _sip._udp.example.com."),
+                 InvalidRdataText);
+    // The double quotes seperator must match
+    EXPECT_THROW(const NAPTR naptr("100 10 \"S SIP \"\" _sip._udp.example.com."),
+                 InvalidRdataText);
+    // Order or preference cannot be missed
+    EXPECT_THROW(const NAPTR naptr("10 \"S\" SIP \"\" _sip._udp.example.com."),
+                 InvalidRdataText);
+    // Unquoted fields must be separated by spaces
+    EXPECT_THROW(const NAPTR naptr("100 10S SIP \"\" _sip._udp.example.com."),
+                 InvalidRdataText);
+    EXPECT_THROW(const NAPTR naptr("10010 \"S\" \"SIP\" \"\" _sip._udp.example.com."),
+                 InvalidRdataText);
+    EXPECT_THROW(const NAPTR naptr("100 10 SSIP \"\" _sip._udp.example.com."),
+                 InvalidRdataText);
+    // Field cannot be missing
+    EXPECT_THROW(const NAPTR naptr("100 10 \"S\""), InvalidRdataText);
+
+    // The <character-string> cannot exceed 255 characters
+    string naptr_str;
+    naptr_str += "100 10 ";
+    for (int i = 0; i < 257; ++i) {
+        naptr_str += 'A';
+    }
+    naptr_str += " SIP \"\" _sip._udp.example.com.";
+    EXPECT_THROW(const NAPTR naptr(naptr_str), CharStringTooLong);
+}
+
+TEST_F(Rdata_NAPTR_Test, createFromWire) {
+    InputBuffer input_buffer(naptr_rdata, sizeof(naptr_rdata));
+    NAPTR naptr(input_buffer, sizeof(naptr_rdata));
+    EXPECT_EQ(10, naptr.getOrder());
+    EXPECT_EQ(100, naptr.getPreference());
+    EXPECT_EQ(string("S"), naptr.getFlags());
+    EXPECT_EQ(string("SIP+D2U"), naptr.getServices());
+    EXPECT_EQ(string(""), naptr.getRegexp());
+    EXPECT_EQ(Name("_sip._udp.example.com."), naptr.getReplacement());
+}
+
+TEST_F(Rdata_NAPTR_Test, createFromWireTooLongDataLen) {
+    static uint8_t naptr_rdata_long[] = {
+    0x00,0x0a,0x00,0x64,0x01,0x53,0x07,0x53,0x49,0x50,0x2b,0x44,0x32,0x55,
+    0x00,0x04,0x5f,0x73,0x69,0x70,0x04,0x5f,0x75,0x64,0x70,0x07,0x65,0x78,
+    0x61,0x6d,0x70,0x6c,0x65,0x03,0x63,0x6f,0x6d,0x00,0xff,0xff,0xff,0xff};
+    InputBuffer input_buffer(naptr_rdata_long, sizeof(naptr_rdata_long));
+    EXPECT_THROW(NAPTR naptr(input_buffer, sizeof(naptr_rdata_long)),
+                 isc::dns::DNSMessageFORMERR);
+}
+
+TEST_F(Rdata_NAPTR_Test, createFromWireTooShortDataLen) {
+    // missing data (just set rdata_len too low)
+    for (size_t i = 0; i < sizeof(naptr_rdata); ++i) {
+        // Just use existing correct buffer but set rdata_len too low
+        InputBuffer input_buffer(naptr_rdata, sizeof(naptr_rdata));
+        EXPECT_THROW(NAPTR naptr(input_buffer, i),
+                     isc::dns::DNSMessageFORMERR);
+    }
+}
+
+TEST_F(Rdata_NAPTR_Test, createFromLexer) {
+    const NAPTR rdata_naptr(naptr_str);
+
+    EXPECT_EQ(0, rdata_naptr.compare(
+        *test::createRdataUsingLexer(RRType::NAPTR(), RRClass::IN(),
+                                     naptr_str)));
+
+    // Exceptions cause NULL to be returned.
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::NAPTR(), RRClass::IN(),
+                                             "65536 10 S SIP \"\" "
+                                             "_sip._udp.example.com."));
+}
+
+TEST_F(Rdata_NAPTR_Test, toWire) {
+    NAPTR naptr(naptr_str);
+
+    naptr.toWire(obuffer);
+    matchWireData(naptr_rdata, sizeof(naptr_rdata),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_NAPTR_Test, toWireRenderer) {
+    NAPTR naptr(naptr_str);
+
+    naptr.toWire(renderer);
+    matchWireData(naptr_rdata, sizeof(naptr_rdata),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_NAPTR_Test, toText) {
+    NAPTR naptr(naptr_str);
+    EXPECT_EQ(naptr_str, naptr.toText());
+
+    // will add quotes even if they were not in the original input
+    EXPECT_EQ("10 100 \"S\" \"SIP+D2U\" \".*\" _sip._udp.example.com.",
+              NAPTR("10 100 S SIP+D2U .* _sip._udp.example.com.").toText());
+    // will not add additional quotes
+    EXPECT_EQ("10 100 \"S\" \"SIP+D2U\" \".*\" _sip._udp.example.com.",
+              NAPTR("10 100 \"S\" \"SIP+D2U\" \".*\" _sip._udp.example.com.")
+                .toText());
+}
+
+TEST_F(Rdata_NAPTR_Test, compare) {
+    NAPTR naptr(naptr_str);
+    NAPTR naptr_small1(naptr_str_small1);
+    NAPTR naptr_small2(naptr_str_small2);
+    NAPTR naptr_small3(naptr_str_small3);
+    NAPTR naptr_small4(naptr_str_small4);
+    NAPTR naptr_small5(naptr_str_small5);
+    NAPTR naptr_large1(naptr_str_large1);
+    NAPTR naptr_large2(naptr_str_large2);
+    NAPTR naptr_large3(naptr_str_large3);
+    NAPTR naptr_large4(naptr_str_large4);
+    NAPTR naptr_large5(naptr_str_large5);
+
+    EXPECT_EQ(0, naptr.compare(NAPTR(naptr_str)));
+    EXPECT_EQ(1, naptr.compare(naptr_small1));
+    EXPECT_EQ(1, naptr.compare(naptr_small2));
+    EXPECT_EQ(1, naptr.compare(naptr_small3));
+    EXPECT_EQ(1, naptr.compare(naptr_small4));
+    EXPECT_EQ(1, naptr.compare(naptr_small5));
+    EXPECT_EQ(-1, naptr.compare(naptr_large1));
+    EXPECT_EQ(-1, naptr.compare(naptr_large2));
+    EXPECT_EQ(-1, naptr.compare(naptr_large3));
+    EXPECT_EQ(-1, naptr.compare(naptr_large4));
+    EXPECT_EQ(-1, naptr.compare(naptr_large5));
+    EXPECT_EQ(-1, naptr_small1.compare(naptr));
+    EXPECT_EQ(-1, naptr_small2.compare(naptr));
+    EXPECT_EQ(-1, naptr_small3.compare(naptr));
+    EXPECT_EQ(-1, naptr_small4.compare(naptr));
+    EXPECT_EQ(-1, naptr_small5.compare(naptr));
+    EXPECT_EQ(1, naptr_large1.compare(naptr));
+    EXPECT_EQ(1, naptr_large2.compare(naptr));
+    EXPECT_EQ(1, naptr_large3.compare(naptr));
+    EXPECT_EQ(1, naptr_large4.compare(naptr));
+    EXPECT_EQ(1, naptr_large5.compare(naptr));
+}
+
+TEST_F(Rdata_NAPTR_Test, copy) {
+    NAPTR naptr(naptr_str);
+    NAPTR naptr2(naptr);
+    NAPTR naptr3 = naptr;
+
+    EXPECT_EQ(0, naptr.compare(naptr2));
+    EXPECT_EQ(0, naptr.compare(naptr3));
+
+    naptr3 = naptr;
+    EXPECT_EQ(0, naptr.compare(naptr3));
+}
+
+}
diff --git a/src/lib/dns/tests/rdata_ns_unittest.cc b/src/lib/dns/tests/rdata_ns_unittest.cc
new file mode 100644
index 0000000..31bb508
--- /dev/null
+++ b/src/lib/dns/tests/rdata_ns_unittest.cc
@@ -0,0 +1,145 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_NS_Test : public RdataTest {
+public:
+    Rdata_NS_Test() :
+        rdata_ns("ns.example.com."),
+        rdata_ns2("ns2.example.com.")
+    {}
+
+    const generic::NS rdata_ns;
+    const generic::NS rdata_ns2;
+};
+
+const uint8_t wiredata_ns[] = {
+    0x02, 0x6e, 0x73, 0x07, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x03,
+    0x63, 0x6f, 0x6d, 0x00 };
+const uint8_t wiredata_ns2[] = {
+    // first name: ns.example.com.
+    0x02, 0x6e, 0x73, 0x07, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x03,
+    0x63, 0x6f, 0x6d, 0x00,
+    // second name: ns2.example.com.  all labels except the first should be
+    // compressed.
+    0x03, 0x6e, 0x73, 0x32, 0xc0, 0x03 };
+
+TEST_F(Rdata_NS_Test, createFromText) {
+    EXPECT_EQ(0, rdata_ns.compare(generic::NS("ns.example.com.")));
+    // explicitly add a trailing dot.  should be the same RDATA.
+    EXPECT_EQ(0, rdata_ns.compare(generic::NS("ns.example.com.")));
+    // should be case sensitive.
+    EXPECT_EQ(0, rdata_ns.compare(generic::NS("NS.EXAMPLE.COM.")));
+    // RDATA of a class-independent type should be recognized for any
+    // "unknown" class.
+    EXPECT_EQ(0, rdata_ns.compare(*createRdata(RRType("NS"), RRClass(65000),
+                                               "ns.example.com.")));
+}
+
+TEST_F(Rdata_NS_Test, badText) {
+    // Extra input at end of line
+    EXPECT_THROW(generic::NS("ns.example.com. extra."), InvalidRdataText);
+}
+
+TEST_F(Rdata_NS_Test, createFromWire) {
+    EXPECT_EQ(0, rdata_ns.compare(
+                  *rdataFactoryFromFile(RRType("NS"), RRClass("IN"),
+                                        "rdata_ns_fromWire")));
+    // RDLENGTH is too short
+    EXPECT_THROW(rdataFactoryFromFile(RRType("NS"), RRClass("IN"),
+                                      "rdata_ns_fromWire", 18),
+                 InvalidRdataLength);
+    // RDLENGTH is too long
+    EXPECT_THROW(rdataFactoryFromFile(RRType("NS"), RRClass("IN"),
+                                      "rdata_ns_fromWire", 36),
+                 InvalidRdataLength);
+    // incomplete name.  the error should be detected in the name constructor
+    EXPECT_THROW(rdataFactoryFromFile(RRType("NS"), RRClass("IN"),
+                                      "rdata_ns_fromWire", 71),
+                 DNSMessageFORMERR);
+
+    EXPECT_EQ(0, generic::NS("ns2.example.com.").compare(
+                  *rdataFactoryFromFile(RRType("NS"), RRClass("IN"),
+                                        "rdata_ns_fromWire", 55)));
+    EXPECT_THROW(*rdataFactoryFromFile(RRType("NS"), RRClass("IN"),
+                                       "rdata_ns_fromWire", 63),
+                 InvalidRdataLength);
+}
+
+TEST_F(Rdata_NS_Test, createFromLexer) {
+    EXPECT_EQ(0, rdata_ns.compare(
+        *test::createRdataUsingLexer(RRType::NS(), RRClass::IN(),
+                                     "ns.example.com.")));
+
+    // test::createRdataUsingLexer() constructs relative to
+    // "example.org." origin.
+    EXPECT_EQ(0, generic::NS("ns8.example.org.").compare(
+        *test::createRdataUsingLexer(RRType::NS(), RRClass::IN(),
+                                     "ns8")));
+
+    // Exceptions cause NULL to be returned.
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::NS(), RRClass::IN(),
+                                             ""));
+
+    // Extra input at end of line
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::NS(), RRClass::IN(),
+                                             "ns.example.com. extra."));
+}
+
+TEST_F(Rdata_NS_Test, toWireBuffer) {
+    rdata_ns.toWire(obuffer);
+    matchWireData(wiredata_ns, sizeof(wiredata_ns),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_NS_Test, toWireRenderer) {
+    rdata_ns.toWire(renderer);
+    matchWireData(wiredata_ns, sizeof(wiredata_ns),
+                  renderer.getData(), renderer.getLength());
+
+    rdata_ns2.toWire(renderer);
+    matchWireData(wiredata_ns2, sizeof(wiredata_ns2),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_NS_Test, toText) {
+    EXPECT_EQ("ns.example.com.", rdata_ns.toText());
+}
+
+TEST_F(Rdata_NS_Test, compare) {
+    generic::NS small("a.example.");
+    generic::NS large("example.");
+    EXPECT_TRUE(Name("a.example") > Name("example"));
+    EXPECT_GT(0, small.compare(large));
+}
+
+TEST_F(Rdata_NS_Test, getNSName) {
+    EXPECT_EQ(Name("ns.example.com."), rdata_ns.getNSName());
+}
+}
diff --git a/src/lib/dns/tests/rdata_nsec3_unittest.cc b/src/lib/dns/tests/rdata_nsec3_unittest.cc
new file mode 100644
index 0000000..c6d3a07
--- /dev/null
+++ b/src/lib/dns/tests/rdata_nsec3_unittest.cc
@@ -0,0 +1,226 @@
+// Copyright (C) 2010-2017 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <string>
+
+#include <exceptions/exceptions.h>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+
+using isc::UnitTestUtil;
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+
+namespace {
+
+// Note: some tests can be shared with NSEC3PARAM.  They are unified as
+// typed tests defined in nsec3param_like_unittest.
+class Rdata_NSEC3_Test : public RdataTest {
+protected:
+    Rdata_NSEC3_Test() :
+        nsec3_txt("1 1 1 D399EAAB H9RSFB7FPF2L8HG35CMPC765TDK23RP6 "
+                  "A NS SOA"),
+        nsec3_nosalt_txt("1 1 1 - H9RSFB7FPF2L8HG35CMPC765TDK23RP6 A NS SOA"),
+        nsec3_notype_txt("1 1 1 D399EAAB H9RSFB7FPF2L8HG35CMPC765TDK23RP6"),
+        rdata_nsec3(nsec3_txt)
+    {}
+
+    void checkFromText_None(const string& rdata_str) {
+        checkFromText<generic::NSEC3, isc::Exception, isc::Exception>(
+            rdata_str, rdata_nsec3, false, false);
+    }
+
+    void checkFromText_InvalidText(const string& rdata_str) {
+        checkFromText<generic::NSEC3, InvalidRdataText, InvalidRdataText>(
+            rdata_str, rdata_nsec3, true, true);
+    }
+
+    void checkFromText_BadValue(const string& rdata_str) {
+        checkFromText<generic::NSEC3, BadValue, BadValue>(
+            rdata_str, rdata_nsec3, true, true);
+    }
+
+    void checkFromText_LexerError(const string& rdata_str) {
+        checkFromText
+            <generic::NSEC3, InvalidRdataText, MasterLexer::LexerError>(
+                rdata_str, rdata_nsec3, true, true);
+    }
+
+    void checkFromText_BadString(const string& rdata_str) {
+        checkFromText
+            <generic::NSEC3, InvalidRdataText, isc::Exception>(
+                rdata_str, rdata_nsec3, true, false);
+    }
+
+    const string nsec3_txt;
+    const string nsec3_nosalt_txt;
+    const string nsec3_notype_txt;
+    const generic::NSEC3 rdata_nsec3;
+};
+
+TEST_F(Rdata_NSEC3_Test, fromText) {
+    // Hash that has the possible max length
+    EXPECT_EQ(255, generic::NSEC3("1 1 1 D399EAAB " +
+                                  string((255 * 8) / 5, '0') +
+                                  " NS").getNext().size());
+
+    // Hash is too long.  Max = 255 bytes, base32-hex converts each 5 bytes
+    // of the original to 8 characters, so 260 * 8 / 5 is the smallest length
+    // of the encoded string that exceeds the max and doesn't require padding.
+    checkFromText_InvalidText("1 1 1 D399EAAB " + string((260 * 8) / 5, '0') +
+                              " A NS SOA");
+
+    // Type bitmap is empty.  it's possible and allowed for NSEC3.
+    EXPECT_NO_THROW(const generic::NSEC3 rdata_notype_nsec3(nsec3_notype_txt));
+
+    // Empty salt is also okay.
+    EXPECT_NO_THROW(const generic::NSEC3 rdata_nosalt_nsec3(nsec3_nosalt_txt));
+
+    // Bad type mnemonics
+    checkFromText_InvalidText("1 1 1 D399EAAB H9RSFB7FPF2L8HG35CMPC765TDK23RP6"
+                              " BIFF POW SPOON");
+
+    // Bad base32hex
+    checkFromText_BadValue("1 1 1 D399EAAB "
+                           "WXYZWXYZWXYZ=WXYZWXYZ==WXYZWXYZW A NS SOA");
+
+    // Hash algorithm out of range
+    checkFromText_InvalidText("256 1 1 D399EAAB "
+                              "H9RSFB7FPF2L8HG35CMPC765TDK23RP6 A NS SOA");
+
+    // Flags out of range
+    checkFromText_InvalidText("1 256 1 D399EAAB "
+                              "H9RSFB7FPF2L8HG35CMPC765TDK23RP6 A NS SOA");
+
+    // Iterations out of range
+    checkFromText_InvalidText("1 1 65536 D399EAAB "
+                              "H9RSFB7FPF2L8HG35CMPC765TDK23RP6 A NS SOA");
+
+    // Space is not allowed in salt or the next hash. This actually
+    // causes the Base32 decoder that parses the next hash that comes
+    // afterwards, to throw.
+    checkFromText_BadValue("1 1 1 D399 EAAB H9RSFB7FPF2L8"
+                           "HG35CMPC765TDK23RP6 A NS SOA");
+
+    // Next hash must not contain padding (trailing '=' characters)
+    checkFromText_InvalidText("1 1 1 D399EAAB "
+                              "AAECAwQFBgcICQoLDA0ODw== A NS SOA");
+
+    // String instead of number
+    checkFromText_LexerError("foo 1 1 D399EAAB "
+                             "H9RSFB7FPF2L8HG35CMPC765TDK23RP6 A NS SOA");
+    checkFromText_LexerError("1 foo 1 D399EAAB "
+                             "H9RSFB7FPF2L8HG35CMPC765TDK23RP6 A NS SOA");
+    checkFromText_LexerError("1 1 foo D399EAAB "
+                             "H9RSFB7FPF2L8HG35CMPC765TDK23RP6 A NS SOA");
+
+    // Trailing garbage. This should cause only the string constructor
+    // to fail, but the lexer constructor must be able to continue
+    // parsing from it.
+    checkFromText_BadString(
+        "1 1 1 D399EAAB H9RSFB7FPF2L8HG35CMPC765TDK23RP6 A NS SOA ;comment\n"
+        "1 1 1 D399EAAB H9RSFB7FPF2L8HG35CMPC765TDK23RP6 A NS SOA");
+
+    // Unmatched parenthesis should cause a lexer error
+    checkFromText_LexerError("1 1 1 D399EAAB "
+                             "H9RSFB7FPF2L8HG35CMPC765TDK23RP6 A ) NS SOA");
+}
+
+TEST_F(Rdata_NSEC3_Test, createFromWire) {
+    // A valid NSEC3 RR with empty type bitmap.
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType::NSEC3(), RRClass::IN(),
+                                         "rdata_nsec3_fromWire15.wire"));
+
+    // Invalid bitmap cases are tested in Rdata_NSECBITMAP_Test.
+
+    // hash length is too large
+    EXPECT_THROW(rdataFactoryFromFile(RRType::NSEC3(), RRClass::IN(),
+                                      "rdata_nsec3_fromWire12.wire"),
+                 DNSMessageFORMERR);
+
+    // empty hash.  invalid.
+    EXPECT_THROW(rdataFactoryFromFile(RRType::NSEC3(), RRClass::IN(),
+                                      "rdata_nsec3_fromWire14.wire"),
+                 DNSMessageFORMERR);
+
+    // RDLEN is too short to hold the hash length field
+    EXPECT_THROW(rdataFactoryFromFile(RRType::NSEC3(), RRClass::IN(),
+                                      "rdata_nsec3_fromWire17.wire"),
+                 DNSMessageFORMERR);
+
+    // Short buffer cases.  The data is valid NSEC3 RDATA, but the buffer
+    // is trimmed at the end.  All cases should result in an exception from
+    // the buffer class.
+    vector<uint8_t> data;
+    UnitTestUtil::readWireData("rdata_nsec3_fromWire1", data);
+    const uint16_t rdlen = (data.at(0) << 8) + data.at(1);
+    for (int i = 0; i < rdlen; ++i) {
+        // intentionally construct a short buffer
+        InputBuffer b(&data[0] + 2, i);
+        EXPECT_THROW(createRdata(RRType::NSEC3(), RRClass::IN(), b, 39),
+                     InvalidBufferPosition);
+    }
+}
+
+TEST_F(Rdata_NSEC3_Test, createFromLexer) {
+    EXPECT_EQ(0, rdata_nsec3.compare(
+        *test::createRdataUsingLexer(RRType::NSEC3(), RRClass::IN(),
+                                     nsec3_txt)));
+
+    // empty salt is also okay.
+    const generic::NSEC3 rdata_nosalt_nsec3(nsec3_nosalt_txt);
+    EXPECT_EQ(0, rdata_nosalt_nsec3.compare(
+        *test::createRdataUsingLexer(RRType::NSEC3(), RRClass::IN(),
+                                     nsec3_nosalt_txt)));
+}
+
+TEST_F(Rdata_NSEC3_Test, assign) {
+    generic::NSEC3 other_nsec3 = rdata_nsec3;
+    EXPECT_EQ(0, rdata_nsec3.compare(other_nsec3));
+}
+
+TEST_F(Rdata_NSEC3_Test, compare) {
+    // trivial case: self equivalence
+    EXPECT_EQ(0, generic::NSEC3(nsec3_txt).compare(generic::NSEC3(nsec3_txt)));
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(generic::NSEC3(nsec3_txt).compare(*rdata_nomatch),
+                 bad_cast);
+
+    // test RDATAs, sorted in the ascending order.  We only check comparison
+    // on NSEC3-specific fields.  Bitmap comparison is tested in the bitmap
+    // tests.  Common cases for NSEC3 and NSECPARAM3 are in their shared tests.
+    vector<generic::NSEC3> compare_set;
+    compare_set.push_back(generic::NSEC3("1 1 1 FF99EA0000 D1K6GQ38"));
+    compare_set.push_back(generic::NSEC3("1 1 1 FF99EA0000 D1K6GQ0000000000"));
+    compare_set.push_back(generic::NSEC3("1 1 1 FF99EA0000 D1K6GQ00UUUUUUUU"));
+
+    vector<generic::NSEC3>::const_iterator it;
+    const vector<generic::NSEC3>::const_iterator it_end = compare_set.end();
+    for (it = compare_set.begin(); it != it_end - 1; ++it) {
+        SCOPED_TRACE("compare " + it->toText() + " to " + (it + 1)->toText());
+        EXPECT_GT(0, (*it).compare(*(it + 1)));
+        EXPECT_LT(0, (*(it + 1)).compare(*it));
+    }
+}
+
+}
diff --git a/src/lib/dns/tests/rdata_nsec3param_like_unittest.cc b/src/lib/dns/tests/rdata_nsec3param_like_unittest.cc
new file mode 100644
index 0000000..914a6f4
--- /dev/null
+++ b/src/lib/dns/tests/rdata_nsec3param_like_unittest.cc
@@ -0,0 +1,272 @@
+// Copyright (C) 2012-2019 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <dns/exceptions.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+#include <string>
+#include <vector>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+using namespace isc::util;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+
+// Template for shared tests for NSEC3 and NSEC3PARAM
+template <typename RDATA_TYPE>
+class NSEC3PARAMLikeTest : public RdataTest {
+protected:
+    NSEC3PARAMLikeTest() :
+        salt_txt("1 1 1 D399EAAB" + getCommonText()),
+        nosalt_txt("1 1 1 -" + getCommonText()),
+        obuffer(0)
+    {}
+
+    RDATA_TYPE fromText(const string& rdata_text) {
+        return (RDATA_TYPE(rdata_text));
+    }
+
+    void compareCheck() const {
+        typename vector<RDATA_TYPE>::const_iterator it;
+        typename vector<RDATA_TYPE>::const_iterator const it_end =
+            compare_set.end();
+        for (it = compare_set.begin(); it != it_end - 1; ++it) {
+            SCOPED_TRACE("compare " + it->toText() + " to " +
+                         (it + 1)->toText());
+            EXPECT_GT(0, (*it).compare(*(it + 1)));
+            EXPECT_LT(0, (*(it + 1)).compare(*it));
+        }
+    }
+
+    const string salt_txt;      // RDATA text with salt
+    const string nosalt_txt;    // RDATA text without salt
+    OutputBuffer obuffer;       // used in toWire() tests
+    MessageRenderer renderer;   // ditto
+    vector<RDATA_TYPE> compare_set; // used in compare() tests
+
+    // Convert generic Rdata to the corresponding derived Rdata class object.
+    // Defined here because it depends on the template parameter.
+    static const RDATA_TYPE& convert(const Rdata& rdata) {
+        return (dynamic_cast<const RDATA_TYPE&>(rdata));
+    }
+
+    // These depend on the specific RR type.  We use specialized methods
+    // for them.
+    static RRType getType(); // return either RRType::NSEC3() or NSEC3PARAM()
+    static string getWireFilePrefix();
+    static string getCommonText(); // commonly used part of textual form
+};
+
+// Instantiate specific typed tests
+typedef ::testing::Types<generic::NSEC3, generic::NSEC3PARAM> TestRdataTypes;
+#ifdef TYPED_TEST_SUITE
+TYPED_TEST_SUITE(NSEC3PARAMLikeTest, TestRdataTypes);
+#else
+TYPED_TEST_CASE(NSEC3PARAMLikeTest, TestRdataTypes);
+#endif
+
+template <>
+RRType
+NSEC3PARAMLikeTest<generic::NSEC3>::getType() {
+    return (RRType::NSEC3());
+}
+
+template <>
+RRType
+NSEC3PARAMLikeTest<generic::NSEC3PARAM>::getType() {
+    return (RRType::NSEC3PARAM());
+}
+
+template <>
+string
+NSEC3PARAMLikeTest<generic::NSEC3>::getWireFilePrefix() {
+    return ("rdata_nsec3_");
+}
+
+template <>
+string
+NSEC3PARAMLikeTest<generic::NSEC3PARAM>::getWireFilePrefix() {
+    return ("rdata_nsec3param_");
+}
+
+template <>
+string
+NSEC3PARAMLikeTest<generic::NSEC3>::getCommonText() {
+    // next hash + RR type bitmap
+    return (" H9RSFB7FPF2L8HG35CMPC765TDK23RP6 "
+            "NS SOA RRSIG DNSKEY NSEC3PARAM");
+}
+
+template <>
+string
+NSEC3PARAMLikeTest<generic::NSEC3PARAM>::getCommonText() {
+    // there's no more text for NSEC3PARAM
+    return ("");
+}
+
+TYPED_TEST(NSEC3PARAMLikeTest, fromText) {
+    // Numeric parameters have possible maximum values.  Unusual, but must
+    // be accepted.
+    EXPECT_NO_THROW(this->fromText("255 255 65535 D399EAAB" +
+                                   this->getCommonText()));
+
+    // 0-length salt
+    EXPECT_EQ(0, this->fromText(this->nosalt_txt).getSalt().size());
+
+    // salt that has the possible max length
+    EXPECT_EQ(255, this->fromText("1 1 1 " + string(255 * 2, '0') +
+                                  this->getCommonText()).getSalt().size());
+}
+
+TYPED_TEST(NSEC3PARAMLikeTest, badText) {
+    // Bad salt hex
+    EXPECT_THROW(this->fromText("1 1 1 SPORK0" + this->getCommonText()),
+                 isc::BadValue);
+    EXPECT_THROW(this->fromText("1 1 1 ADDAFEE" + this->getCommonText()),
+                 isc::BadValue);
+
+    // Space within salt
+    EXPECT_THROW(this->fromText("1 1 1 ADDAFE ADDAFEEE" +
+                                this->getCommonText()),
+                 InvalidRdataText);
+
+    // Similar to empty salt, but not really.  This shouldn't cause confusion.
+    EXPECT_THROW(this->fromText("1 1 1 --" + this->getCommonText()),
+                 isc::BadValue);
+
+    // Too large algorithm
+    EXPECT_THROW(this->fromText("1000000 1 1 ADDAFEEE" + this->getCommonText()),
+                 InvalidRdataText);
+
+    // Too large flags
+    EXPECT_THROW(this->fromText("1 1000000 1 ADDAFEEE" + this->getCommonText()),
+                 InvalidRdataText);
+
+    // Too large iterations
+    EXPECT_THROW(this->fromText("1 1 65536 ADDAFEEE" + this->getCommonText()),
+                 InvalidRdataText);
+
+    // There should be a space between "1" and "D399EAAB" (salt)
+    EXPECT_THROW(this->fromText("1 1 1D399EAAB" + this->getCommonText()),
+                 InvalidRdataText);
+
+    // Salt is too long (possible max + 1 bytes)
+    EXPECT_THROW(this->fromText("1 1 1 " + string(256 * 2, '0') +
+                                this->getCommonText()),
+                 InvalidRdataText);
+}
+
+TYPED_TEST(NSEC3PARAMLikeTest, toText) {
+    // normal case
+    EXPECT_EQ(this->salt_txt, this->fromText(this->salt_txt).toText());
+
+    // empty salt case
+    EXPECT_EQ(this->nosalt_txt, this->fromText(this->nosalt_txt).toText());
+}
+
+TYPED_TEST(NSEC3PARAMLikeTest, createFromWire) {
+    // Normal case
+    EXPECT_EQ(0, this->fromText(this->salt_txt).compare(
+                  *this->rdataFactoryFromFile(this->getType(), RRClass::IN(),
+                                              (this->getWireFilePrefix() +
+                                               "fromWire1").c_str())));
+
+    // Too short RDLENGTH: it doesn't even contain the first 5 octets.
+    EXPECT_THROW(this->rdataFactoryFromFile(this->getType(), RRClass::IN(),
+                                            (this->getWireFilePrefix() +
+                                             "fromWire2.wire").c_str()),
+                 DNSMessageFORMERR);
+
+    // salt length is too large
+    EXPECT_THROW(this->rdataFactoryFromFile(this->getType(), RRClass::IN(),
+                                            (this->getWireFilePrefix() +
+                                             "fromWire11.wire").c_str()),
+                 DNSMessageFORMERR);
+
+    // empty salt.  not so usual, but valid.
+    ConstRdataPtr rdata =
+        this->rdataFactoryFromFile(this->getType(), RRClass::IN(),
+                                   (this->getWireFilePrefix() +
+                                    "fromWire13.wire").c_str());
+    EXPECT_EQ(0, this->convert(*rdata).getSalt().size());
+}
+
+TYPED_TEST(NSEC3PARAMLikeTest, createFromLexer) {
+    EXPECT_EQ(0, this->fromText(this->salt_txt).compare(
+        *test::createRdataUsingLexer(this->getType(), RRClass::IN(),
+                                     this->salt_txt)));
+
+    // Exceptions cause NULL to be returned.
+    EXPECT_FALSE(test::createRdataUsingLexer(this->getType(), RRClass::IN(),
+                                             "1000000 1 1 ADDAFEEE" +
+                                             this->getCommonText()));
+}
+
+template <typename OUTPUT_TYPE>
+void
+toWireCheck(RRType rrtype, OUTPUT_TYPE& output, const string& data_file) {
+    vector<uint8_t> data;
+    UnitTestUtil::readWireData(data_file.c_str(), data);
+    InputBuffer buffer(&data[0], data.size());
+    const uint16_t rdlen = buffer.readUint16();
+
+    output.clear();
+    output.writeUint16(rdlen);
+    createRdata(rrtype, RRClass::IN(), buffer, rdlen)->toWire(output);
+    matchWireData(&data[0], data.size(),
+                  output.getData(), output.getLength());
+}
+
+TYPED_TEST(NSEC3PARAMLikeTest, toWire) {
+    // normal case
+    toWireCheck(this->getType(), this->renderer,
+                this->getWireFilePrefix() + "fromWire1");
+    toWireCheck(this->getType(), this->obuffer,
+                this->getWireFilePrefix() + "fromWire1");
+
+    // empty salt
+    toWireCheck(this->getType(), this->renderer,
+                this->getWireFilePrefix() + "fromWire13.wire");
+    toWireCheck(this->getType(), this->obuffer,
+                this->getWireFilePrefix() + "fromWire13.wire");
+}
+
+TYPED_TEST(NSEC3PARAMLikeTest, compare) {
+    // test RDATAs, sorted in the ascending order.
+    this->compare_set.push_back(this->fromText("0 0 0 D399EAAB" +
+                                               this->getCommonText()));
+    this->compare_set.push_back(this->fromText("1 0 0 D399EAAB" +
+                                               this->getCommonText()));
+    this->compare_set.push_back(this->fromText("1 1 0 D399EAAB" +
+                                               this->getCommonText()));
+    this->compare_set.push_back(this->fromText("1 1 1 -" +
+                                               this->getCommonText()));
+    this->compare_set.push_back(this->fromText("1 1 1 D399EAAB" +
+                                               this->getCommonText()));
+    this->compare_set.push_back(this->fromText("1 1 1 FF99EAAB" +
+                                               this->getCommonText()));
+    this->compare_set.push_back(this->fromText("1 1 1 FF99EA0000" +
+                                               this->getCommonText()));
+
+    this->compareCheck();
+}
+
+}
diff --git a/src/lib/dns/tests/rdata_nsec3param_unittest.cc b/src/lib/dns/tests/rdata_nsec3param_unittest.cc
new file mode 100644
index 0000000..9a677be
--- /dev/null
+++ b/src/lib/dns/tests/rdata_nsec3param_unittest.cc
@@ -0,0 +1,209 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <string>
+
+#include <exceptions/exceptions.h>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_NSEC3PARAM_Test : public RdataTest {
+protected:
+    Rdata_NSEC3PARAM_Test() :
+        nsec3param_txt("1 1 1 D399EAAB"),
+        nsec3param_nosalt_txt("1 1 1 -"),
+        rdata_nsec3param(nsec3param_txt)
+    {}
+
+    void checkFromText_None(const string& rdata_str) {
+        checkFromText<generic::NSEC3PARAM, isc::Exception, isc::Exception>(
+            rdata_str, rdata_nsec3param, false, false);
+    }
+
+    void checkFromText_InvalidText(const string& rdata_str) {
+        checkFromText<generic::NSEC3PARAM, InvalidRdataText, InvalidRdataText>(
+            rdata_str, rdata_nsec3param, true, true);
+    }
+
+    void checkFromText_BadValue(const string& rdata_str) {
+        checkFromText<generic::NSEC3PARAM, BadValue, BadValue>(
+            rdata_str, rdata_nsec3param, true, true);
+    }
+
+    void checkFromText_LexerError(const string& rdata_str) {
+        checkFromText
+            <generic::NSEC3PARAM, InvalidRdataText, MasterLexer::LexerError>(
+                rdata_str, rdata_nsec3param, true, true);
+    }
+
+    void checkFromText_BadString(const string& rdata_str,
+                                 const generic::NSEC3PARAM& rdata)
+    {
+        checkFromText
+            <generic::NSEC3PARAM, InvalidRdataText, isc::Exception>(
+                rdata_str, rdata, true, false);
+    }
+
+    const string nsec3param_txt;
+    const string nsec3param_nosalt_txt;
+    const generic::NSEC3PARAM rdata_nsec3param;
+};
+
+TEST_F(Rdata_NSEC3PARAM_Test, fromText) {
+    // Empty salt is okay.
+    EXPECT_EQ(0, generic::NSEC3PARAM(nsec3param_nosalt_txt).getSalt().size());
+
+    // Salt is missing.
+    checkFromText_LexerError("1 1 1");
+
+    // Salt has whitespace within. This only fails in the string
+    // constructor, as the lexer constructor stops reading at the end of
+    // its RDATA.
+    const generic::NSEC3PARAM rdata_nsec3param2("1 1 1 D399");
+    checkFromText_BadString("1 1 1 D399 EAAB", rdata_nsec3param2);
+
+    // Hash algorithm out of range.
+    checkFromText_InvalidText("256 1 1 D399EAAB");
+
+    // Flags out of range.
+    checkFromText_InvalidText("1 256 1 D399EAAB");
+
+    // Iterations out of range.
+    checkFromText_InvalidText("1 1 65536 D399EAAB");
+
+    // Bad hex sequence
+    checkFromText_BadValue("1 1 256 D399EAABZOO");
+
+    // String instead of number
+    checkFromText_LexerError("foo 1 256 D399EAAB");
+    checkFromText_LexerError("1 foo 256 D399EAAB");
+    checkFromText_LexerError("1 1 foo D399EAAB");
+
+    // Trailing garbage. This should cause only the string constructor
+    // to fail, but the lexer constructor must be able to continue
+    // parsing from it.
+    checkFromText_BadString("1 1 1 D399EAAB ; comment\n"
+                            "1 1 1 D399EAAB", rdata_nsec3param);
+}
+
+TEST_F(Rdata_NSEC3PARAM_Test, toText) {
+    EXPECT_EQ(nsec3param_txt, rdata_nsec3param.toText());
+
+    // Garbage space at the end should be ok. RFC5155 only forbids
+    // whitespace within the salt field, but any whitespace afterwards
+    // should be fine.
+    EXPECT_NO_THROW(generic::NSEC3PARAM("1 1 1 D399EAAB "));
+
+    // Hash algorithm in range.
+    EXPECT_NO_THROW(generic::NSEC3PARAM("255 1 1 D399EAAB"));
+
+    // Flags in range.
+    EXPECT_NO_THROW(generic::NSEC3PARAM("1 255 1 D399EAAB"));
+
+    // Iterations in range.
+    EXPECT_NO_THROW(generic::NSEC3PARAM("1 1 65535 D399EAAB"));
+}
+
+TEST_F(Rdata_NSEC3PARAM_Test, createFromWire) {
+    EXPECT_EQ(0, rdata_nsec3param.compare(
+                  *rdataFactoryFromFile(RRType::NSEC3PARAM(), RRClass::IN(),
+                                       "rdata_nsec3param_fromWire1")));
+
+    // Short buffer cases.  The data is valid NSEC3PARAM RDATA, but the buffer
+    // is trimmed at the end.  All cases should result in an exception from
+    // the buffer class.
+    vector<uint8_t> data;
+    UnitTestUtil::readWireData("rdata_nsec3param_fromWire1", data);
+    const uint16_t rdlen = (data.at(0) << 8) + data.at(1);
+    for (int i = 0; i < rdlen; ++i) {
+        // intentionally construct a short buffer
+        InputBuffer b(&data[0] + 2, i);
+        EXPECT_THROW(createRdata(RRType::NSEC3PARAM(), RRClass::IN(), b, 9),
+                     InvalidBufferPosition);
+    }
+}
+
+TEST_F(Rdata_NSEC3PARAM_Test, createFromLexer) {
+    EXPECT_EQ(0, rdata_nsec3param.compare(
+        *test::createRdataUsingLexer(RRType::NSEC3PARAM(), RRClass::IN(),
+                                     nsec3param_txt)));
+
+    // empty salt is also okay.
+    const generic::NSEC3PARAM rdata_nosalt_nsec3param(nsec3param_nosalt_txt);
+    EXPECT_EQ(0, rdata_nosalt_nsec3param.compare(
+        *test::createRdataUsingLexer(RRType::NSEC3PARAM(), RRClass::IN(),
+                                     nsec3param_nosalt_txt)));
+}
+
+TEST_F(Rdata_NSEC3PARAM_Test, toWireRenderer) {
+    renderer.skip(2);
+    rdata_nsec3param.toWire(renderer);
+
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("rdata_nsec3param_fromWire1", data);
+    matchWireData(&data[2], data.size() - 2,
+                  static_cast<const uint8_t *>(renderer.getData()) + 2,
+                  renderer.getLength() - 2);
+}
+
+TEST_F(Rdata_NSEC3PARAM_Test, toWireBuffer) {
+    rdata_nsec3param.toWire(obuffer);
+
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("rdata_nsec3param_fromWire1", data);
+    matchWireData(&data[2], data.size() - 2,
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_NSEC3PARAM_Test, getHashAlg) {
+    EXPECT_EQ(1, rdata_nsec3param.getHashalg());
+}
+
+TEST_F(Rdata_NSEC3PARAM_Test, getFlags) {
+    EXPECT_EQ(1, rdata_nsec3param.getFlags());
+}
+
+TEST_F(Rdata_NSEC3PARAM_Test, assign) {
+    generic::NSEC3PARAM other_nsec3param("1 1 1 -");
+    other_nsec3param = rdata_nsec3param;
+    EXPECT_EQ(0, rdata_nsec3param.compare(other_nsec3param));
+}
+
+TEST_F(Rdata_NSEC3PARAM_Test, compare) {
+    // trivial case: self equivalence
+    EXPECT_EQ(0, generic::NSEC3PARAM(nsec3param_txt).
+              compare(generic::NSEC3PARAM(nsec3param_txt)));
+    EXPECT_EQ(0, generic::NSEC3PARAM("1 1 1 -").
+              compare(generic::NSEC3PARAM("1 1 1 -")));
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(generic::NSEC3PARAM(nsec3param_txt).compare(*rdata_nomatch),
+                 bad_cast);
+}
+
+}
diff --git a/src/lib/dns/tests/rdata_nsec_unittest.cc b/src/lib/dns/tests/rdata_nsec_unittest.cc
new file mode 100644
index 0000000..570a2ab
--- /dev/null
+++ b/src/lib/dns/tests/rdata_nsec_unittest.cc
@@ -0,0 +1,138 @@
+// Copyright (C) 2010-2017 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <string>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_NSEC_Test : public RdataTest {
+    // there's nothing to specialize
+};
+
+const char* const nsec_txt = "www2.isc.org. CNAME RRSIG NSEC";
+
+TEST_F(Rdata_NSEC_Test, toText_NSEC) {
+    const generic::NSEC rdata_nsec(nsec_txt);
+    EXPECT_EQ(nsec_txt, rdata_nsec.toText());
+}
+
+TEST_F(Rdata_NSEC_Test, badText_NSEC) {
+    EXPECT_THROW(generic::NSEC rdata_nsec("www.isc.org. BIFF POW SPOON"),
+                 InvalidRdataText);
+    EXPECT_THROW(generic::NSEC rdata_nsec("www.isc.org."),
+                 InvalidRdataText);
+}
+
+TEST_F(Rdata_NSEC_Test, createFromWire_NSEC) {
+    const generic::NSEC rdata_nsec(nsec_txt);
+    EXPECT_EQ(0, rdata_nsec.compare(
+                  *rdataFactoryFromFile(RRType::NSEC(), RRClass::IN(),
+                                        "rdata_nsec_fromWire1")));
+
+    // Too short RDLENGTH
+    EXPECT_THROW(rdataFactoryFromFile(RRType::NSEC(), RRClass::IN(),
+                                      "rdata_nsec_fromWire2"),
+                 DNSMessageFORMERR);
+
+    // Invalid bitmap cases are tested in Rdata_NSECBITMAP_Test.
+}
+
+TEST_F(Rdata_NSEC_Test, createFromLexer_NSEC) {
+    const generic::NSEC rdata_nsec(nsec_txt);
+    EXPECT_EQ(0, rdata_nsec.compare(
+        *test::createRdataUsingLexer(RRType::NSEC(), RRClass::IN(),
+                                     nsec_txt)));
+
+    // test::createRdataUsingLexer() constructs relative to
+    // "example.org." origin.
+    EXPECT_EQ(0, generic::NSEC("www2.example.org. CNAME RRSIG NSEC").compare(
+        *test::createRdataUsingLexer(RRType::NSEC(), RRClass::IN(),
+                                     "www2 CNAME RRSIG NSEC")));
+
+    // Exceptions cause NULL to be returned.
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::NSEC(), RRClass::IN(),
+                                             "www.isc.org."));
+}
+
+TEST_F(Rdata_NSEC_Test, toWireRenderer_NSEC) {
+    renderer.skip(2);
+    const generic::NSEC rdata_nsec(nsec_txt);
+    rdata_nsec.toWire(renderer);
+
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("rdata_nsec_fromWire1", data);
+    matchWireData(&data[2], data.size() - 2,
+                  static_cast<const uint8_t *>(renderer.getData()) + 2,
+                  renderer.getLength() - 2);
+}
+
+TEST_F(Rdata_NSEC_Test, toWireBuffer_NSEC) {
+    const generic::NSEC rdata_nsec(nsec_txt);
+    rdata_nsec.toWire(obuffer);
+}
+
+TEST_F(Rdata_NSEC_Test, assign) {
+    generic::NSEC rdata_nsec(nsec_txt);
+    generic::NSEC rdata_nsec2 = rdata_nsec;
+    EXPECT_EQ(0, rdata_nsec.compare(rdata_nsec2));
+}
+
+TEST_F(Rdata_NSEC_Test, getNextName) {
+    // The implementation is quite trivial, so we simply check it's actually
+    // defined and does work as intended in a simple case.
+    EXPECT_EQ(Name("www2.isc.org"), generic::NSEC((nsec_txt)).getNextName());
+}
+
+TEST_F(Rdata_NSEC_Test, compare) {
+    // trivial case: self equivalence
+    EXPECT_EQ(0, generic::NSEC("example. A").
+              compare(generic::NSEC("example. A")));
+    EXPECT_EQ(0, generic::NSEC("EXAMPLE. A"). // should be case insensitive
+              compare(generic::NSEC("example. A")));
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(generic::NSEC(nsec_txt).compare(*rdata_nomatch),
+                 bad_cast);
+
+    // test RDATAs, sorted in the ascending order.  We only compare the
+    // next name here.  Bitmap comparison is tested in the bitmap tests.
+    // Note that names are compared as wire-format data, not based on the
+    // domain name comparison.
+    vector<generic::NSEC> compare_set;
+    compare_set.push_back(generic::NSEC("a.example. A"));
+    compare_set.push_back(generic::NSEC("example. A"));
+    vector<generic::NSEC>::const_iterator it;
+    const vector<generic::NSEC>::const_iterator it_end = compare_set.end();
+    for (it = compare_set.begin(); it != it_end - 1; ++it) {
+        SCOPED_TRACE("compare " + it->toText() + " to " + (it + 1)->toText());
+        EXPECT_GT(0, (*it).compare(*(it + 1)));
+        EXPECT_LT(0, (*(it + 1)).compare(*it));
+    }
+}
+
+}
diff --git a/src/lib/dns/tests/rdata_nsecbitmap_unittest.cc b/src/lib/dns/tests/rdata_nsecbitmap_unittest.cc
new file mode 100644
index 0000000..f18e9df
--- /dev/null
+++ b/src/lib/dns/tests/rdata_nsecbitmap_unittest.cc
@@ -0,0 +1,269 @@
+// Copyright (C) 2011-2019 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <dns/tests/unittest_util.h>
+
+#include <dns/exceptions.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+#include <boost/lexical_cast.hpp>
+
+#include <string>
+#include <vector>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+using namespace isc::util;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+using boost::lexical_cast;
+
+namespace {
+
+// Template for shared tests for NSEC and NSEC3 bitmaps
+template <typename RDATA_TYPE>
+class NSECLikeBitmapTest : public RdataTest {
+protected:
+    RDATA_TYPE fromText(const string& rdata_text) {
+        return (RDATA_TYPE(rdata_text));
+    }
+
+    vector<RDATA_TYPE> compare_set; // used in compare() tests
+
+    void compareCheck() const {
+        typename vector<RDATA_TYPE>::const_iterator it;
+        typename vector<RDATA_TYPE>::const_iterator const it_end =
+            compare_set.end();
+        for (it = compare_set.begin(); it != it_end - 1; ++it) {
+            SCOPED_TRACE("compare " + it->toText() + " to " +
+                         (it + 1)->toText());
+            EXPECT_GT(0, (*it).compare(*(it + 1)));
+            EXPECT_LT(0, (*(it + 1)).compare(*it));
+        }
+    }
+
+    // These depend on the specific RR type.  We use specialized methods
+    // for them.
+    static RRType getType();    // return either RRType::NSEC() or NSEC3()
+    static string getWireFilePrefix();
+    static string getCommonText(); // commonly used part of textual form
+};
+
+// Instantiate specific typed tests
+typedef ::testing::Types<generic::NSEC, generic::NSEC3> TestRdataTypes;
+#ifdef TYPED_TEST_SUITE
+TYPED_TEST_SUITE(NSECLikeBitmapTest, TestRdataTypes);
+#else
+TYPED_TEST_CASE(NSECLikeBitmapTest, TestRdataTypes);
+#endif
+
+// NSEC and NSEC3 bitmaps have some subtle differences, in which case we
+// need to test them separately.  Using these typedef type names with TEST_F
+// will do the trick.
+typedef NSECLikeBitmapTest<generic::NSEC3> NSEC3BitmapTest;
+typedef NSECLikeBitmapTest<generic::NSEC> NSECBitmapTest;
+
+template <>
+string
+NSECLikeBitmapTest<generic::NSEC>::getWireFilePrefix() {
+    return ("rdata_nsec_");
+}
+
+template <>
+RRType
+NSECLikeBitmapTest<generic::NSEC>::getType() {
+    return (RRType::NSEC());
+}
+
+template <>
+string
+NSECLikeBitmapTest<generic::NSEC3>::getWireFilePrefix() {
+    return ("rdata_nsec3_");
+}
+
+template <>
+RRType
+NSECLikeBitmapTest<generic::NSEC3>::getType() {
+    return (RRType::NSEC3());
+}
+
+template <>
+string
+NSECLikeBitmapTest<generic::NSEC>::getCommonText() {
+    return ("next. ");
+}
+
+template <>
+string
+NSECLikeBitmapTest<generic::NSEC3>::getCommonText() {
+    return ("1 1 12 AABBCCDD 2T7B4G4VSA5SMI47K61MV5BV1A22BOJR ");
+}
+
+// Tests against various types of bogus NSEC/NSEC3 type bitmaps.
+// The syntax and semantics are common for both RR types, and our
+// implementation of that part is shared, so in theory it should be sufficient
+// to test for only one RR type.  But we check for both just in case.
+TYPED_TEST(NSECLikeBitmapTest, createFromWire) {
+    // A malformed NSEC bitmap length field that could cause overflow.
+    EXPECT_THROW(this->rdataFactoryFromFile(this->getType(), RRClass::IN(),
+                                            (this->getWireFilePrefix() +
+                                             "fromWire4.wire").c_str()),
+                 DNSMessageFORMERR);
+
+    // The bitmap field is incomplete (only the first byte is included)
+    EXPECT_THROW(this->rdataFactoryFromFile(this->getType(), RRClass::IN(),
+                                            (this->getWireFilePrefix() +
+                                             "fromWire5.wire").c_str()),
+                 DNSMessageFORMERR);
+
+    // Bitmap length is 0, which is invalid.
+    EXPECT_THROW(this->rdataFactoryFromFile(this->getType(), RRClass::IN(),
+                                            (this->getWireFilePrefix() +
+                                             "fromWire6.wire").c_str()),
+                 DNSMessageFORMERR);
+
+    // Too large bitmap length with a short buffer.
+    EXPECT_THROW(this->rdataFactoryFromFile(this->getType(), RRClass::IN(),
+                                            (this->getWireFilePrefix() +
+                                             "fromWire3").c_str()),
+                 DNSMessageFORMERR);
+
+    // A boundary case: longest possible bitmaps (32 maps).  This should be
+    // accepted.
+    EXPECT_NO_THROW(this->rdataFactoryFromFile(this->getType(), RRClass::IN(),
+                                               (this->getWireFilePrefix() +
+                                                "fromWire7.wire").c_str()));
+
+    // Another boundary condition: 33 bitmaps, which should be rejected.
+    EXPECT_THROW(this->rdataFactoryFromFile(this->getType(), RRClass::IN(),
+                                            (this->getWireFilePrefix() +
+                                             "fromWire8.wire").c_str()),
+                 DNSMessageFORMERR);
+
+    // Disordered bitmap window blocks.
+    EXPECT_THROW(this->rdataFactoryFromFile(this->getType(), RRClass::IN(),
+                                            (this->getWireFilePrefix() +
+                                             "fromWire9.wire").c_str()),
+                 DNSMessageFORMERR);
+
+    // Bitmap ending with all-zero bytes.  Not necessarily harmful except
+    // the additional overhead of parsing, but invalid according to the
+    // spec anyway.
+    EXPECT_THROW(this->rdataFactoryFromFile(this->getType(), RRClass::IN(),
+                                            (this->getWireFilePrefix() +
+                                             "fromWire10.wire").c_str()),
+                 DNSMessageFORMERR);
+}
+
+// This tests the result of toText() with various kinds of NSEC/NSEC3 bitmaps.
+// It also tests the "from text" constructor as a result.
+TYPED_TEST(NSECLikeBitmapTest, toText) {
+    // A simple case (some commonly seen RR types in NSEC(3) bitmaps)
+    string rdata_text = this->getCommonText() + "NS SOA RRSIG DNSKEY";
+    EXPECT_EQ(rdata_text, this->fromText(rdata_text).toText());
+
+    // Similar to above, but involves more than one bitmap window blocks.
+    rdata_text = this->getCommonText() + "NS DLV";
+    EXPECT_EQ(rdata_text, this->fromText(rdata_text).toText());
+
+    // Make sure all possible bits in a one-octet bitmap field are handled
+    // correctly.
+    // We use the range around 1024 (reasonably higher number) so it's
+    // unlikely that they have predefined mnemonic and can be safely converted
+    // to TYPEnnnn by toText().
+    for (unsigned int i = 1024; i < 1032; ++i) {
+        rdata_text = this->getCommonText() + "TYPE" + lexical_cast<string>(i);
+        EXPECT_EQ(rdata_text, this->fromText(rdata_text).toText());
+    }
+
+    // Make sure all possible 32 octets in a longest possible block are
+    // handled correctly.
+    for (unsigned int i = 1024; i < 1024 + 256; i += 8) {
+        rdata_text = this->getCommonText() + "TYPE" + lexical_cast<string>(i);
+        EXPECT_EQ(rdata_text, this->fromText(rdata_text).toText());
+    }
+
+    // Check for the highest window block.
+    rdata_text = this->getCommonText() + "TYPE65535";
+    EXPECT_EQ(rdata_text, this->fromText(rdata_text).toText());
+}
+
+TYPED_TEST(NSECLikeBitmapTest, compare) {
+    // Bit map: [win=0][len=1] 00000010
+    this->compare_set.push_back(this->fromText(this->getCommonText() + "SOA"));
+    // Bit map: [win=0][len=1] 00000010, [win=4][len=1] 10000000
+    this->compare_set.push_back(this->fromText(this->getCommonText() +
+                                               "SOA TYPE1024"));
+    // Bit map: [win=0][len=1] 00100000
+    this->compare_set.push_back(this->fromText(this->getCommonText() + "NS"));
+    // Bit map: [win=0][len=1] 00100010
+    this->compare_set.push_back(this->fromText(this->getCommonText() +
+                                               "NS SOA"));
+    // Bit map: [win=0][len=2] 00100000, 00000001
+    this->compare_set.push_back(this->fromText(this->getCommonText() +
+                                               "NS MX"));
+    // Bit map: [win=4][len=1] 10000000
+    this->compare_set.push_back(this->fromText(this->getCommonText() +
+                                               "TYPE1024"));
+
+    this->compareCheck();
+}
+
+// NSEC bitmaps must not be empty
+TEST_F(NSECBitmapTest, emptyMap) {
+    EXPECT_THROW(this->fromText("next.example.").toText(), InvalidRdataText);
+
+    EXPECT_THROW(this->rdataFactoryFromFile(this->getType(), RRClass::IN(),
+                                            (this->getWireFilePrefix() +
+                                             "fromWire16.wire").c_str()),
+                 DNSMessageFORMERR);
+}
+
+// NSEC3 bitmaps can be empty
+TEST_F(NSEC3BitmapTest, emptyMap) {
+    // Read wire data wit an empty NSEC3 bitmap.  This should succeed.
+    vector<uint8_t> data;
+    UnitTestUtil::readWireData((this->getWireFilePrefix() +
+                                "fromWire16.wire").c_str(), data);
+    InputBuffer buffer(&data[0], data.size());
+    const uint16_t rdlen = buffer.readUint16();
+    const generic::NSEC3 empty_nsec3 =
+        dynamic_cast<const generic::NSEC3&>(*createRdata(
+                                                RRType::NSEC3(), RRClass::IN(),
+                                                buffer, rdlen));
+
+    // Check the toText() result.
+    EXPECT_EQ("1 0 1 7373737373 D1K6GQ38D1K6GQ38D1K6GQ38D1K6GQ38",
+              empty_nsec3.toText());
+
+    // Check the toWire() result.
+    OutputBuffer obuffer(0);
+    obuffer.writeUint16(rdlen);
+    empty_nsec3.toWire(obuffer);
+    matchWireData(&data[0], data.size(),
+                  obuffer.getData(), obuffer.getLength());
+
+    // Same for MessageRenderer.
+    obuffer.clear();
+    MessageRenderer renderer;
+    renderer.writeUint16(rdlen);
+    empty_nsec3.toWire(renderer);
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+}
diff --git a/src/lib/dns/tests/rdata_opt_unittest.cc b/src/lib/dns/tests/rdata_opt_unittest.cc
new file mode 100644
index 0000000..a235183
--- /dev/null
+++ b/src/lib/dns/tests/rdata_opt_unittest.cc
@@ -0,0 +1,198 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_OPT_Test : public RdataTest {
+    // there's nothing to specialize
+};
+
+const uint8_t rdata_opt_wiredata[] = {
+    // Option code
+    0x00, 0x2a,
+    // Option length
+    0x00, 0x03,
+    // Option data
+    0x00, 0x01, 0x02
+};
+
+TEST_F(Rdata_OPT_Test, createFromText) {
+    // OPT RR cannot be created from text.
+    EXPECT_THROW(generic::OPT("this does not matter"), InvalidRdataText);
+}
+
+TEST_F(Rdata_OPT_Test, createFromWire) {
+    // Valid cases: in the simple implementation with no supported options,
+    // we can only check these don't throw.
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType::OPT(), RRClass("CLASS4096"),
+                                         "rdata_opt_fromWire1"));
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType::OPT(), RRClass::CH(),
+                                         "rdata_opt_fromWire1", 2));
+
+    // Short RDLEN. This throws InvalidRdataLength even if subsequent
+    // pseudo RRs cause RDLEN size to be exhausted.
+    EXPECT_THROW(rdataFactoryFromFile(RRType::OPT(), RRClass::IN(),
+                                      "rdata_opt_fromWire2"),
+                 InvalidRdataLength);
+    EXPECT_THROW(rdataFactoryFromFile(RRType::OPT(), RRClass::IN(),
+                                      "rdata_opt_fromWire3"),
+                 InvalidRdataLength);
+    // Option lengths can add up and overflow RDLEN. Unlikely when
+    // parsed from wire data, but we'll check for it anyway.
+    EXPECT_THROW(rdataFactoryFromFile(RRType::OPT(), RRClass::IN(),
+                                      "rdata_opt_fromWire4"),
+                 InvalidRdataText);
+
+    // short buffer case.
+    EXPECT_THROW(rdataFactoryFromFile(RRType::OPT(), RRClass::IN(),
+                                      "rdata_opt_fromWire1", 11),
+                 InvalidBufferPosition);
+}
+
+TEST_F(Rdata_OPT_Test, createFromLexer) {
+    // OPT RR cannot be created from text. Exceptions cause NULL to be
+    // returned.
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::OPT(), RRClass::IN(),
+                                             "this does not matter"));
+}
+
+TEST_F(Rdata_OPT_Test, toWireBuffer) {
+    const generic::OPT rdata_opt =
+        dynamic_cast<const generic::OPT&>
+        (*rdataFactoryFromFile(RRType("OPT"), RRClass("IN"),
+                               "rdata_opt_fromWire1", 2));
+
+    obuffer.clear();
+    rdata_opt.toWire(obuffer);
+
+    matchWireData(rdata_opt_wiredata, sizeof(rdata_opt_wiredata),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_OPT_Test, toWireRenderer) {
+    const generic::OPT rdata_opt =
+        dynamic_cast<const generic::OPT&>
+        (*rdataFactoryFromFile(RRType("OPT"), RRClass("IN"),
+                               "rdata_opt_fromWire1", 2));
+
+    renderer.clear();
+    rdata_opt.toWire(renderer);
+
+    matchWireData(rdata_opt_wiredata, sizeof(rdata_opt_wiredata),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_OPT_Test, toText) {
+    // empty OPT
+    const generic::OPT rdata_opt;
+
+    EXPECT_THROW(rdata_opt.toText(),
+                 isc::InvalidOperation);
+}
+
+TEST_F(Rdata_OPT_Test, compare) {
+    // empty OPT
+    const generic::OPT rdata_opt;
+
+    EXPECT_THROW(rdata_opt.compare(
+                  *rdataFactoryFromFile(RRType::OPT(), RRClass::CH(),
+                                        "rdata_opt_fromWire1", 2)),
+                 isc::InvalidOperation);
+
+    // comparison attempt between incompatible RR types also results in
+    // isc::InvalidOperation.
+    EXPECT_THROW(rdata_opt.compare(*RdataTest::rdata_nomatch),
+                 isc::InvalidOperation);
+}
+
+TEST_F(Rdata_OPT_Test, appendPseudoRR) {
+    generic::OPT rdata_opt;
+
+    // Append empty option data
+    rdata_opt.appendPseudoRR(0x0042, NULL, 0);
+
+    // Append simple option data
+    const uint8_t option_data[] = {'H', 'e', 'l', 'l', 'o'};
+    rdata_opt.appendPseudoRR(0x0043, option_data, sizeof(option_data));
+
+    // Duplicate option codes are okay.
+    rdata_opt.appendPseudoRR(0x0042, option_data, sizeof(option_data));
+
+    // When option length may overflow RDLEN, append should throw.
+    const std::vector<uint8_t> buffer((1 << 16) - 1);
+    EXPECT_THROW(rdata_opt.appendPseudoRR(0x0044, &buffer[0], buffer.size()),
+                 isc::InvalidParameter);
+
+    const uint8_t rdata_opt_wiredata2[] = {
+        // OPTION #1
+        // ` Option code
+        0x00, 0x42,
+        // ` Option length
+        0x00, 0x00,
+
+        // OPTION #2
+        // ` Option code
+        0x00, 0x43,
+        // ` Option length
+        0x00, 0x05,
+        // ` Option data
+        'H', 'e', 'l', 'l', 'o',
+
+        // OPTION #3
+        // ` Option code
+        0x00, 0x42,
+        // ` Option length
+        0x00, 0x05,
+        // ` Option data
+        'H', 'e', 'l', 'l', 'o'
+    };
+
+    obuffer.clear();
+    rdata_opt.toWire(obuffer);
+
+    matchWireData(rdata_opt_wiredata2, sizeof(rdata_opt_wiredata2),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_OPT_Test, getPseudoRRs) {
+    const generic::OPT rdf =
+        dynamic_cast<const generic::OPT&>
+        (*rdataFactoryFromFile(RRType("OPT"), RRClass("IN"),
+                               "rdata_opt_fromWire1", 2));
+
+    const std::vector<generic::OPT::PseudoRR>& rrs = rdf.getPseudoRRs();
+    ASSERT_FALSE(rrs.empty());
+    EXPECT_EQ(1, rrs.size());
+    EXPECT_EQ(0x2a, rrs.at(0).getCode());
+    EXPECT_EQ(3, rrs.at(0).getLength());
+
+    const uint8_t expected_data[] = {0x00, 0x01, 0x02};
+    const uint8_t* actual_data = rrs.at(0).getData();
+    EXPECT_EQ(0, std::memcmp(expected_data, actual_data,
+                             sizeof(expected_data)));
+}
+}
diff --git a/src/lib/dns/tests/rdata_pimpl_holder_unittest.cc b/src/lib/dns/tests/rdata_pimpl_holder_unittest.cc
new file mode 100644
index 0000000..d639541
--- /dev/null
+++ b/src/lib/dns/tests/rdata_pimpl_holder_unittest.cc
@@ -0,0 +1,56 @@
+// Copyright (C) 2014-2017 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <dns/rdata_pimpl_holder.h>
+
+#include <gtest/gtest.h>
+
+using namespace isc::dns::rdata;
+
+namespace {
+
+TEST(RdataPimplHolderTest, all) {
+    // Let's check with an integer
+    int* i1 = new int(42);
+    RdataPimplHolder<int> holder1(i1);
+    // The same pointer must be returned.
+    EXPECT_EQ(i1, holder1.get());
+    // Obviously the value should match too.
+    EXPECT_EQ(42, *holder1.get());
+    // We don't explicitly delete i or holder1, so it should not leak
+    // anything when the test is done (checked by Valgrind).
+
+    // The following cases are similar:
+
+    // Test no-argument reset()
+    int* i2 = new int(43);
+    RdataPimplHolder<int> holder2(i2);
+    holder2.reset();
+    EXPECT_EQ(NULL, holder2.get());
+
+    // Test reset() with argument
+    int* i3 = new int(44);
+    int* i4 = new int(45);
+    RdataPimplHolder<int> holder3(i3);
+    EXPECT_EQ(i3, holder3.get());
+    holder3.reset(i4);
+    EXPECT_EQ(i4, holder3.get());
+    EXPECT_EQ(45, *holder3.get());
+
+    // Test release()
+    RdataPimplHolder<int> holder4(new int(46));
+    EXPECT_NE(static_cast<void*>(NULL), holder4.get());
+    EXPECT_EQ(46, *holder4.get());
+    int* i5 = holder4.release();
+    EXPECT_EQ(NULL, holder4.get());
+    EXPECT_NE(static_cast<void*>(NULL), i5);
+    EXPECT_EQ(46, *i5);
+    delete i5;
+}
+
+}
diff --git a/src/lib/dns/tests/rdata_ptr_unittest.cc b/src/lib/dns/tests/rdata_ptr_unittest.cc
new file mode 100644
index 0000000..5ed3bce
--- /dev/null
+++ b/src/lib/dns/tests/rdata_ptr_unittest.cc
@@ -0,0 +1,145 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+//
+// This test currently simply copies the NS RDATA tests.
+//
+
+namespace {
+class Rdata_PTR_Test : public RdataTest {
+public:
+     Rdata_PTR_Test() :
+         rdata_ptr("ns.example.com."),
+         rdata_ptr2("ns2.example.com.")
+     {}
+
+     const generic::PTR rdata_ptr;
+     const generic::PTR rdata_ptr2;
+};
+
+const uint8_t wiredata_ptr[] = {
+    0x02, 0x6e, 0x73, 0x07, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x03,
+    0x63, 0x6f, 0x6d, 0x00 };
+const uint8_t wiredata_ptr2[] = {
+    // first name: ns.example.com.
+    0x02, 0x6e, 0x73, 0x07, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x03,
+    0x63, 0x6f, 0x6d, 0x00,
+    // second name: ns2.example.com.  all labels except the first should be
+    // compressed.
+    0x03, 0x6e, 0x73, 0x32, 0xc0, 0x03 };
+
+TEST_F(Rdata_PTR_Test, createFromText) {
+    EXPECT_EQ(0, rdata_ptr.compare(generic::PTR("ns.example.com.")));
+    // explicitly add a trailing dot.  should be the same RDATA.
+    EXPECT_EQ(0, rdata_ptr.compare(generic::PTR("ns.example.com.")));
+    // should be case sensitive.
+    EXPECT_EQ(0, rdata_ptr.compare(generic::PTR("NS.EXAMPLE.COM.")));
+    // RDATA of a class-independent type should be recognized for any
+    // "unknown" class.
+    EXPECT_EQ(0, rdata_ptr.compare(*createRdata(RRType("PTR"), RRClass(65000),
+                                               "ns.example.com.")));
+}
+
+TEST_F(Rdata_PTR_Test, badText) {
+    // Extra text at end of line
+    EXPECT_THROW(generic::PTR("foo.example.com. extra."), InvalidRdataText);
+}
+
+TEST_F(Rdata_PTR_Test, createFromWire) {
+    EXPECT_EQ(0, rdata_ptr.compare(
+                  *rdataFactoryFromFile(RRType("PTR"), RRClass("IN"),
+                                        "rdata_ns_fromWire")));
+    // RDLENGTH is too short
+    EXPECT_THROW(rdataFactoryFromFile(RRType("PTR"), RRClass("IN"),
+                                      "rdata_ns_fromWire", 18),
+                 InvalidRdataLength);
+    // RDLENGTH is too long
+    EXPECT_THROW(rdataFactoryFromFile(RRType("PTR"), RRClass("IN"),
+                                      "rdata_ns_fromWire", 36),
+                 InvalidRdataLength);
+    // incomplete name.  the error should be detected in the name constructor
+    EXPECT_THROW(rdataFactoryFromFile(RRType("PTR"), RRClass("IN"),
+                                      "rdata_ns_fromWire", 71),
+                 DNSMessageFORMERR);
+
+    EXPECT_EQ(0, generic::PTR("ns2.example.com.").compare(
+                  *rdataFactoryFromFile(RRType("PTR"), RRClass("IN"),
+                                        "rdata_ns_fromWire", 55)));
+    EXPECT_THROW(*rdataFactoryFromFile(RRType("PTR"), RRClass("IN"),
+                                       "rdata_ns_fromWire", 63),
+                 InvalidRdataLength);
+}
+
+TEST_F(Rdata_PTR_Test, createFromLexer) {
+    EXPECT_EQ(0, rdata_ptr.compare(
+        *test::createRdataUsingLexer(RRType::PTR(), RRClass::IN(),
+                                     "ns.example.com.")));
+
+    // test::createRdataUsingLexer() constructs relative to
+    // "example.org." origin.
+    EXPECT_EQ(0, generic::PTR("foo0.example.org.").compare(
+        *test::createRdataUsingLexer(RRType::PTR(), RRClass::IN(),
+                                     "foo0")));
+
+    // Extra text at end of line
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::PTR(), RRClass::IN(),
+                                             "foo.example.com. extra."));
+}
+
+TEST_F(Rdata_PTR_Test, toWireBuffer) {
+    rdata_ptr.toWire(obuffer);
+    matchWireData(wiredata_ptr, sizeof(wiredata_ptr),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_PTR_Test, toWireRenderer) {
+    rdata_ptr.toWire(renderer);
+    matchWireData(wiredata_ptr, sizeof(wiredata_ptr),
+                  renderer.getData(), renderer.getLength());
+
+    rdata_ptr2.toWire(renderer);
+    matchWireData(wiredata_ptr2, sizeof(wiredata_ptr2),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_PTR_Test, toText) {
+    EXPECT_EQ("ns.example.com.", rdata_ptr.toText());
+}
+
+TEST_F(Rdata_PTR_Test, compare) {
+    generic::PTR small("a.example.");
+    generic::PTR large("example.");
+    EXPECT_TRUE(Name("a.example") > Name("example"));
+    EXPECT_GT(0, small.compare(large));
+}
+
+TEST_F(Rdata_PTR_Test, getPTRName) {
+    EXPECT_EQ(Name("ns.example.com"), rdata_ptr.getPTRName());
+}
+}
diff --git a/src/lib/dns/tests/rdata_rp_unittest.cc b/src/lib/dns/tests/rdata_rp_unittest.cc
new file mode 100644
index 0000000..e752f13
--- /dev/null
+++ b/src/lib/dns/tests/rdata_rp_unittest.cc
@@ -0,0 +1,200 @@
+// Copyright (C) 2011-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <string>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/rdataclass.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::util;
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_RP_Test : public RdataTest {
+protected:
+    Rdata_RP_Test() :
+        mailbox_name("root.example.com."),
+        text_name("rp-text.example.com."),
+        // this also serves as a test for "from text" constructor in a normal
+        // case.
+        rdata_rp("root.example.com. rp-text.example.com."),
+        obuffer(0)
+    {}
+
+    void checkFromText_None(const string& rdata_str) {
+        checkFromText<generic::RP, isc::Exception, isc::Exception>(
+            rdata_str, rdata_rp, false, false);
+    }
+
+    void checkFromText_LexerError(const string& rdata_str) {
+        checkFromText
+            <generic::RP, InvalidRdataText, MasterLexer::LexerError>(
+                rdata_str, rdata_rp, true, true);
+    }
+
+    void checkFromText_BadString(const string& rdata_str) {
+        checkFromText<generic::RP, InvalidRdataText, isc::Exception>(
+            rdata_str, rdata_rp, true, false);
+    }
+
+    void checkFromText_EmptyLabel(const string& rdata_str) {
+        checkFromText<generic::RP, EmptyLabel, EmptyLabel>(
+            rdata_str, rdata_rp, true, true);
+    }
+
+    void checkFromText_MissingOrigin(const string& rdata_str) {
+        checkFromText
+            <generic::RP, MissingNameOrigin, MissingNameOrigin>(
+                rdata_str, rdata_rp, true, true);
+    }
+
+    void checkFromText_Origin(const string& rdata_str, const Name* origin) {
+        checkFromText<generic::RP, MissingNameOrigin, isc::Exception>(
+            rdata_str, rdata_rp, true, false, origin);
+    }
+
+    const Name mailbox_name, text_name;
+    const generic::RP rdata_rp; // commonly used test RDATA
+    OutputBuffer obuffer;
+    MessageRenderer renderer;
+    vector<uint8_t> expected_wire;
+};
+
+TEST_F(Rdata_RP_Test, createFromText) {
+    EXPECT_EQ(mailbox_name, rdata_rp.getMailbox());
+    EXPECT_EQ(text_name, rdata_rp.getText());
+
+    checkFromText_None("root.example.com. rp-text.example.com.");
+
+    // origin defined for lexer constructor, but not string constructor
+    const Name origin("example.com");
+    checkFromText_Origin("root rp-text", &origin);
+
+    // lexer constructor accepts extra text, but string constructor doesn't
+    checkFromText_BadString("root.example.com. rp-text.example.com. "
+                            "extra.example.com.");
+}
+
+TEST_F(Rdata_RP_Test, badText) {
+    // invalid names
+    checkFromText_EmptyLabel("root..example.com. rp-text.example.com.");
+    checkFromText_EmptyLabel("root.example.com. rp-text..example.com.");
+
+    // missing field
+    checkFromText_LexerError("root.example.com.");
+
+    // missing origin
+    checkFromText_MissingOrigin("root.example.com rp-text.example.com.");
+    checkFromText_MissingOrigin("root.example.com. rp-text.example.com");
+}
+
+TEST_F(Rdata_RP_Test, createFromWire) {
+    RdataPtr rdata(rdataFactoryFromFile(RRType::RP(), RRClass::IN(),
+                                        "rdata_rp_fromWire1.wire"));
+    EXPECT_EQ(mailbox_name, dynamic_cast<generic::RP&>(*rdata).getMailbox());
+    EXPECT_EQ(text_name, dynamic_cast<generic::RP&>(*rdata).getText());
+
+    // a similar test with names being compressed
+    rdata = rdataFactoryFromFile(RRType::RP(), RRClass::IN(),
+                                 "rdata_rp_fromWire2.wire", 30);
+    EXPECT_EQ(mailbox_name, dynamic_cast<generic::RP&>(*rdata).getMailbox());
+    EXPECT_EQ(Name("rp-text.example.net"),
+              dynamic_cast<generic::RP&>(*rdata).getText());
+}
+
+TEST_F(Rdata_RP_Test, badFromWire) {
+    // RDLEN is too short
+    EXPECT_THROW(rdataFactoryFromFile(RRType::RP(), RRClass::IN(),
+                                      "rdata_rp_fromWire3.wire"),
+                 InvalidRdataLength);
+
+    // RDLEN is too long
+    EXPECT_THROW(rdataFactoryFromFile(RRType::RP(), RRClass::IN(),
+                                      "rdata_rp_fromWire4.wire"),
+                 InvalidRdataLength);
+
+    // bogus mailbox name
+    EXPECT_THROW(rdataFactoryFromFile(RRType::RP(), RRClass::IN(),
+                                      "rdata_rp_fromWire5.wire"),
+                 DNSMessageFORMERR);
+
+    // bogus text name
+    EXPECT_THROW(rdataFactoryFromFile(RRType::RP(), RRClass::IN(),
+                                      "rdata_rp_fromWire6.wire"),
+                 DNSMessageFORMERR);
+}
+
+TEST_F(Rdata_RP_Test, createFromParams) {
+    EXPECT_EQ(mailbox_name, generic::RP(mailbox_name, text_name).getMailbox());
+    EXPECT_EQ(text_name, generic::RP(mailbox_name, text_name).getText());
+}
+
+TEST_F(Rdata_RP_Test, toWireBuffer) {
+    // construct expected data
+    UnitTestUtil::readWireData("rdata_rp_toWire1.wire", expected_wire);
+
+    // construct actual data
+    rdata_rp.toWire(obuffer);
+
+    // then compare them
+    matchWireData(&expected_wire[0], expected_wire.size(),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_RP_Test, toWireRenderer) {
+    // similar to toWireBuffer, but names in RDATA could be compressed due to
+    // preceding names.  Actually they must not be compressed according to
+    // RFC3597, and this test checks that.
+
+    UnitTestUtil::readWireData("rdata_rp_toWire2.wire", expected_wire);
+
+    renderer.writeName(Name("a.example.com"));
+    renderer.writeName(Name("b.example.net"));
+    generic::RP(mailbox_name, Name("rp-text.example.net")).toWire(renderer);
+    matchWireData(&expected_wire[0], expected_wire.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_RP_Test, toText) {
+    // there's not much to test for this method.  Only checking a simple case.
+    EXPECT_EQ("root.example.com. rp-text.example.com.", rdata_rp.toText());
+}
+
+TEST_F(Rdata_RP_Test, compare) {
+    // check reflexivity
+    EXPECT_EQ(0, rdata_rp.compare(rdata_rp));
+
+    // names must be compared in case-insensitive manner
+    EXPECT_EQ(0, rdata_rp.compare(generic::RP("ROOT.example.com. "
+                                              "rp-text.EXAMPLE.com.")));
+
+    // another RP whose mailbox name is larger than that of rdata_rp.
+    const generic::RP large1_rp("zzzz.example.com. rp-text.example.com.");
+    EXPECT_GT(0, rdata_rp.compare(large1_rp));
+    EXPECT_LT(0, large1_rp.compare(rdata_rp));
+
+    // yet another RP whose text name is larger than that of rdata_rp.
+    const generic::RP large2_rp("root.example.com. zzzzzzz.example.com.");
+    EXPECT_GT(0, rdata_rp.compare(large2_rp));
+    EXPECT_LT(0, large2_rp.compare(rdata_rp));
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(rdata_rp.compare(*RdataTest::rdata_nomatch), bad_cast);
+}
+}
diff --git a/src/lib/dns/tests/rdata_rrsig_unittest.cc b/src/lib/dns/tests/rdata_rrsig_unittest.cc
new file mode 100644
index 0000000..b198d15
--- /dev/null
+++ b/src/lib/dns/tests/rdata_rrsig_unittest.cc
@@ -0,0 +1,369 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <exceptions/exceptions.h>
+
+#include <util/buffer.h>
+#include <util/time_utilities.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <util/unittests/wiredata.h>
+#include <dns/tests/rdata_unittest.h>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+
+const uint8_t wiredata_rrsig[] = {
+    // type covered = A
+    0x00, 0x01,
+    // algorithm = 5
+    0x05,
+    // labels = 4
+    0x04,
+    // original TTL = 43200 (0x0000a8c0)
+    0x00, 0x00, 0xa8, 0xc0,
+    // signature expiration = 1266961577 (0x4b844ca9)
+    0x4b, 0x84, 0x4c, 0xa9,
+    // signature inception = 1266875177 (0x4b82fb29)
+    0x4b, 0x82, 0xfb, 0x29,
+    // key tag = 8496 (0x2130)
+    0x21, 0x30,
+    // signer's name (isc.org.)
+    // 3     i     s     c     3     o     r     g     0
+    0x03, 0x69, 0x73, 0x63, 0x03, 0x6f, 0x72, 0x67, 0x00,
+    // signature data follows
+    0x7a, 0xfc, 0x61, 0x94, 0x6c,
+    0x75, 0xde, 0x6a, 0x4a, 0x2d, 0x59, 0x0a, 0xb2,
+    0x3a, 0x46, 0xcf, 0x27, 0x12, 0xe6, 0xdc, 0x2d,
+    0x22, 0x8c, 0x4e, 0x9a, 0x53, 0x75, 0xe3, 0x0f,
+    0x6d, 0xe4, 0x08, 0x33, 0x18, 0x19, 0xb3, 0x76,
+    0x21, 0x9d, 0x2c, 0x8a, 0xc5, 0x69, 0xba, 0xab,
+    0xef, 0x66, 0x9f, 0xda, 0xb5, 0x2a, 0xf9, 0x40,
+    0xc1, 0x28, 0xc5, 0x97, 0xba, 0x3c, 0x19, 0x4d,
+    0x95, 0x13, 0xc2, 0xcd, 0xf6, 0xb1, 0x59, 0x5d,
+    0x0c, 0xf9, 0x3f, 0x35, 0xbb, 0x9a, 0x70, 0x93,
+    0x36, 0xe5, 0xf4, 0x17, 0x7e, 0xfe, 0x66, 0x3b,
+    0x70, 0x1f, 0xed, 0x33, 0xa8, 0xa3, 0x0d, 0xc0,
+    0x8c, 0xc6, 0x95, 0x1b, 0xd8, 0x9c, 0x8c, 0x25,
+    0xb4, 0x57, 0x9e, 0x56, 0x71, 0x64, 0x14, 0x7f,
+    0x8f, 0x6d, 0xfa, 0xc5, 0xca, 0x3f, 0x36, 0xe2,
+    0xa4, 0xdf, 0x60, 0xfa, 0xcd, 0x59, 0x3e, 0x22,
+    0x32, 0xa1, 0xf7
+};
+
+class Rdata_RRSIG_Test : public RdataTest {
+protected:
+    Rdata_RRSIG_Test() :
+        rrsig_txt("A 5 4 43200 20100223214617 20100222214617 8496 isc.org. "
+                  "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+                  "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+                  "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+                  "f49t+sXKPzbipN9g+s1ZPiIyofc="),
+        rdata_rrsig(rrsig_txt)
+    {}
+
+    void checkFromText_None(const string& rdata_str) {
+        checkFromText<generic::RRSIG, isc::Exception, isc::Exception>(
+            rdata_str, rdata_rrsig, false, false);
+    }
+
+    void checkFromText_InvalidText(const string& rdata_str) {
+        checkFromText<generic::RRSIG, InvalidRdataText, InvalidRdataText>(
+            rdata_str, rdata_rrsig, true, true);
+    }
+
+    void checkFromText_InvalidType(const string& rdata_str) {
+        checkFromText<generic::RRSIG, InvalidRRType, InvalidRRType>(
+            rdata_str, rdata_rrsig, true, true);
+    }
+
+    void checkFromText_InvalidTime(const string& rdata_str) {
+        checkFromText<generic::RRSIG, InvalidTime, InvalidTime>(
+            rdata_str, rdata_rrsig, true, true);
+    }
+
+    void checkFromText_BadValue(const string& rdata_str) {
+        checkFromText<generic::RRSIG, BadValue, BadValue>(
+            rdata_str, rdata_rrsig, true, true);
+    }
+
+    void checkFromText_LexerError(const string& rdata_str) {
+        checkFromText
+            <generic::RRSIG, InvalidRdataText, MasterLexer::LexerError>(
+                rdata_str, rdata_rrsig, true, true);
+    }
+
+    void checkFromText_MissingOrigin(const string& rdata_str) {
+        checkFromText
+            <generic::RRSIG, MissingNameOrigin, MissingNameOrigin>(
+                rdata_str, rdata_rrsig, true, true);
+    }
+
+    void checkFromText_BadString(const string& rdata_str) {
+        checkFromText
+            <generic::RRSIG, InvalidRdataText, isc::Exception>(
+                rdata_str, rdata_rrsig, true, false);
+    }
+
+    const string rrsig_txt;
+    const generic::RRSIG rdata_rrsig;
+};
+
+TEST_F(Rdata_RRSIG_Test, fromText) {
+    EXPECT_EQ(rrsig_txt, rdata_rrsig.toText());
+    EXPECT_EQ(isc::dns::RRType::A(), rdata_rrsig.typeCovered());
+
+    // Missing signature is OK
+    EXPECT_NO_THROW(const generic::RRSIG sig(
+              "A 5 4 43200 20100223214617 20100222214617 8496 isc.org."));
+
+    // Space in signature data is OK
+    checkFromText_None(
+              "A 5 4 43200 20100223214617 20100222214617 8496 isc.org. "
+              "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz "
+              "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/ "
+              "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU "
+              "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+
+    // Multi-line signature data is OK, if enclosed in parentheses
+    checkFromText_None(
+              "A 5 4 43200 20100223214617 20100222214617 8496 isc.org. "
+              "( evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz\n"
+              "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/\n"
+              "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU\n"
+              "f49t+sXKPzbipN9g+s1ZPiIyofc= )");
+
+    // Trailing garbage. This should cause only the string constructor
+    // to fail, but the lexer constructor must be able to continue
+    // parsing from it.
+    checkFromText_BadString(
+              "A 5 4 43200 20100223214617 20100222214617 8496 isc.org. "
+              "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+              "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+              "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+              "f49t+sXKPzbipN9g+s1ZPiIyofc= ; comment\n"
+              "A 5 4 43200 20100223214617 20100222214617 8496 isc.org. "
+              "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+              "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+              "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+              "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+}
+
+TEST_F(Rdata_RRSIG_Test, badText_missingFields) {
+    checkFromText_LexerError("A");
+    checkFromText_LexerError("A 5");
+    checkFromText_LexerError("A 5 4");
+    checkFromText_LexerError("A 5 4 43200");
+    checkFromText_LexerError("A 5 4 43200 20100223214617");
+    checkFromText_LexerError("A 5 4 43200 20100223214617 20100222214617");
+    checkFromText_LexerError("A 5 4 43200 20100223214617 20100222214617 "
+                              "8496");
+}
+
+TEST_F(Rdata_RRSIG_Test, badText_coveredType) {
+    checkFromText_InvalidType("SPORK");
+}
+
+TEST_F(Rdata_RRSIG_Test, badText_algorithm) {
+    checkFromText_InvalidText(
+                     "A 555 4 43200 "
+                     "20100223214617 20100222214617 8496 isc.org. "
+                     "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+                     "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+                     "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+                     "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+    checkFromText_LexerError(
+                     "A FIVE 4 43200 "
+                     "20100223214617 20100222214617 8496 isc.org. "
+                     "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+                     "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+                     "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+                     "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+}
+
+TEST_F(Rdata_RRSIG_Test, badText_labels) {
+    checkFromText_InvalidText(
+                     "A 5 4444 43200 "
+                     "20100223214617 20100222214617 8496 isc.org. "
+                     "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+                     "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+                     "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+                     "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+    checkFromText_LexerError(
+                     "A 5 FOUR 43200 "
+                     "20100223214617 20100222214617 8496 isc.org. "
+                     "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+                     "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+                     "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+                     "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+}
+
+TEST_F(Rdata_RRSIG_Test, badText_ttl) {
+    checkFromText_LexerError(
+                     "A 5 4 999999999999 "
+                     "20100223214617 20100222214617 8496 isc.org. "
+                     "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+                     "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+                     "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+                     "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+    checkFromText_LexerError(
+                     "A 5 4 TTL "
+                     "20100223214617 20100222214617 8496 isc.org. "
+                     "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+                     "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+                     "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+                     "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+
+    // alternate form of TTL is not okay
+    checkFromText_LexerError(
+              "A 5 4 12H 20100223214617 20100222214617 8496 isc.org. "
+              "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz "
+              "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/ "
+              "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU "
+              "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+}
+
+TEST_F(Rdata_RRSIG_Test, badText_expiration) {
+    checkFromText_InvalidTime(
+                     "A 5 4 43200 "
+                     "201002232 20100222214617 8496 isc.org. "
+                     "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+                     "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+                     "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+                     "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+    checkFromText_InvalidTime(
+                     "A 5 4 43200 "
+                     "EXPIRATION 20100222214617 8496 isc.org. "
+                     "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+                     "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+                     "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+                     "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+}
+
+TEST_F(Rdata_RRSIG_Test, badText_inception) {
+    checkFromText_InvalidTime(
+                     "A 5 4 43200 "
+                     "20100223214617 20100227 8496 isc.org. "
+                     "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+                     "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+                     "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+                     "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+    checkFromText_InvalidTime(
+                     "A 5 4 43200 "
+                     "20100223214617 INCEPTION 8496 isc.org. "
+                     "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+                     "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+                     "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+                     "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+}
+
+TEST_F(Rdata_RRSIG_Test, badText_keytag) {
+    checkFromText_InvalidText(
+                     "A 5 4 43200 "
+                     "20100223214617 20100222214617 999999 isc.org. "
+                     "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+                     "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+                     "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+                     "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+    checkFromText_LexerError(
+                     "A 5 4 43200 "
+                     "20100223214617 20100222214617 TAG isc.org. "
+                     "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+                     "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+                     "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+                     "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+}
+
+TEST_F(Rdata_RRSIG_Test, badText_signer) {
+    checkFromText_MissingOrigin(
+                     "A 5 4 43200 "
+                     "20100223214617 20100222214617 8496 isc.org "
+                     "evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz"
+                     "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/"
+                     "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU"
+                     "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+}
+
+TEST_F(Rdata_RRSIG_Test, badText_signature) {
+    checkFromText_BadValue(
+                     "A 5 4 43200 "
+                     "20100223214617 20100222214617 8496 isc.org. "
+                     "EEeeeeeeEEEeeeeeeGaaahAAAAAAAAHHHHHHHHHHH!=");
+
+    // no space between the tag and signer
+    checkFromText_LexerError(
+                     "A 5 4 43200 20100223214617 20100222214617 "
+                     "8496isc.org. ofc=");
+
+    // unterminated multi-line base64
+    checkFromText_LexerError(
+              "A 5 4 43200 20100223214617 20100222214617 8496 isc.org. "
+              "( evxhlGx13mpKLVkKsjpGzycS5twtIoxOmlN14w9t5AgzGBmz\n"
+              "diGdLIrFabqr72af2rUq+UDBKMWXujwZTZUTws32sVldDPk/\n"
+              "NbuacJM25fQXfv5mO3Af7TOoow3AjMaVG9icjCW0V55WcWQU\n"
+              "f49t+sXKPzbipN9g+s1ZPiIyofc=");
+}
+
+TEST_F(Rdata_RRSIG_Test, createFromLexer) {
+    EXPECT_EQ(0, rdata_rrsig.compare(
+        *test::createRdataUsingLexer(RRType::RRSIG(), RRClass::IN(),
+                                     rrsig_txt)));
+
+    // Exceptions cause NULL to be returned.
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::RRSIG(), RRClass::IN(),
+                                             "INVALIDINPUT"));
+}
+
+TEST_F(Rdata_RRSIG_Test, toWireRenderer) {
+    rdata_rrsig.toWire(renderer);
+
+    matchWireData(wiredata_rrsig, sizeof(wiredata_rrsig),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_RRSIG_Test, toWireBuffer) {
+    rdata_rrsig.toWire(obuffer);
+
+    matchWireData(wiredata_rrsig, sizeof(wiredata_rrsig),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_RRSIG_Test, createFromWire) {
+    const string rrsig_txt2(
+        "A 5 2 43200 20100327070149 20100225070149 2658 isc.org. "
+        "HkJk/xZTvzePU8NENl/ley8bbUumhk1hXciyqhLnz1VQFzkDooej6neX"
+        "ZgWZzQKeTKPOYWrnYtdZW4PnPQFeUl3orgLev7F8J6FZlDn0y/J/ThR5"
+        "m36Mo2/Gdxjj8lJ/IjPVkdpKyBpcnYND8KEIma5MyNCNeyO1UkfPQZGHNSQ=");
+    EXPECT_EQ(rrsig_txt2,
+              rdataFactoryFromFile(RRType("RRSIG"), RRClass("IN"),
+                                   "rdata_rrsig_fromWire1")->toText());
+    const generic::RRSIG rdata_rrsig2(rrsig_txt2);
+    EXPECT_EQ(0, rdata_rrsig2.compare(
+                      *rdataFactoryFromFile(RRType("RRSIG"), RRClass("IN"),
+                                          "rdata_rrsig_fromWire1")));
+
+    // RDLEN is too short
+    EXPECT_THROW(rdataFactoryFromFile(RRType::RRSIG(), RRClass::IN(),
+                                      "rdata_rrsig_fromWire2.wire"),
+                 InvalidRdataLength);
+}
+}
diff --git a/src/lib/dns/tests/rdata_soa_unittest.cc b/src/lib/dns/tests/rdata_soa_unittest.cc
new file mode 100644
index 0000000..21f4dc4
--- /dev/null
+++ b/src/lib/dns/tests/rdata_soa_unittest.cc
@@ -0,0 +1,249 @@
+// Copyright (C) 2010-2017 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_SOA_Test : public RdataTest {
+protected:
+    Rdata_SOA_Test() :
+        rdata_soa(Name("ns.example.com"),
+                  Name("root.example.com"),
+                  2010012601, 3600, 300, 3600000, 1200)
+    {}
+
+    template <typename ExForString, typename ExForLexer>
+    void checkFromTextSOA(const string& soa_txt, const Name* origin = NULL,
+                          bool throw_str_version = true,
+                          bool throw_lexer_version = true)
+    {
+        checkFromText<generic::SOA, ExForString, ExForLexer>(
+            soa_txt, rdata_soa, throw_str_version, throw_lexer_version,
+            origin);
+    }
+
+    const generic::SOA rdata_soa;
+};
+
+TEST_F(Rdata_SOA_Test, createFromText) {
+    // Below we specify isc::Exception as a dummy value for the exception type
+    // in case it's not expected to throw an exception; the type isn't used
+    // in the check code.
+
+    // A simple case.
+    checkFromTextSOA<isc::Exception, isc::Exception>(
+        "ns.example.com. root.example.com. 2010012601 3600 300 3600000 1200",
+        NULL, false, false);
+
+    // Beginning and trailing space are ignored.
+    checkFromTextSOA<isc::Exception, isc::Exception>(
+        "  ns.example.com. root.example.com. "
+        "2010012601 3600 300 3600000 1200  ", NULL, false, false);
+
+    // using extended TTL-like form for some parameters.
+    checkFromTextSOA<isc::Exception, isc::Exception>(
+        "ns.example.com. root.example.com. 2010012601 1H 5M 1000H 20M",
+        NULL, false, false);
+
+    // multi-line.
+    checkFromTextSOA<isc::Exception, isc::Exception>(
+        "ns.example.com. (root.example.com.\n"
+        "2010012601 1H 5M 1000H) 20M", NULL, false, false);
+
+    // relative names for MNAME and RNAME with a separate origin (lexer
+    // version only)
+    const Name origin("example.com");
+    checkFromTextSOA<MissingNameOrigin, isc::Exception>(
+        "ns root 2010012601 1H 5M 1000H 20M", &origin, true, false);
+
+    // with the '@' notation with a separate origin (lexer version only;
+    // string version would throw)
+    const Name full_mname("ns.example.com");
+    checkFromTextSOA<MissingNameOrigin, isc::Exception>(
+        "@ root.example.com. 2010012601 1H 5M 1000H 20M", &full_mname, true,
+        false);
+
+    // bad MNAME/RNAMEs
+    checkFromTextSOA<EmptyLabel, EmptyLabel>(
+        "bad..example. . 2010012601 1H 5M 1000H 20M");
+    checkFromTextSOA<EmptyLabel, EmptyLabel>(
+        ". bad..example. 2010012601 1H 5M 1000H 20M");
+
+    // Names shouldn't be quoted.
+    checkFromTextSOA<InvalidRdataText, MasterLexer::LexerError>(
+        "\".\" . 0 0 0 0 0");
+    checkFromTextSOA<InvalidRdataText, MasterLexer::LexerError>(
+        ". \".\" 0 0 0 0 0");
+
+    // Missing MAME or RNAME: for the string version, the serial would be
+    // tried as RNAME and result in "not absolute".  For the lexer version,
+    // it reaches the end-of-line, missing min TTL.
+    checkFromTextSOA<MissingNameOrigin, MasterLexer::LexerError>(
+        ". 2010012601 0 0 0 0", &Name::ROOT_NAME());
+
+    // bad serial.  the string version converts lexer error to
+    // InvalidRdataText.
+    checkFromTextSOA<InvalidRdataText, MasterLexer::LexerError>(
+        ". . bad 0 0 0 0");
+
+    // bad serial; exceeding the uint32_t range (4294967296 = 2^32)
+    checkFromTextSOA<InvalidRdataText, MasterLexer::LexerError>(
+        ". . 4294967296 0 0 0 0");
+
+    // Bad format for other numeric parameters.  These will be tried as a TTL,
+    // and result in an exception there.
+    checkFromTextSOA<InvalidRRTTL, InvalidRRTTL>(
+        ". . 2010012601 bad 0 0 0");
+    checkFromTextSOA<InvalidRRTTL, InvalidRRTTL>(
+        ". . 2010012601 4294967296 0 0 0");
+    checkFromTextSOA<InvalidRRTTL, InvalidRRTTL>(
+        ". . 2010012601 0 bad 0 0");
+    checkFromTextSOA<InvalidRRTTL, InvalidRRTTL>(
+        ". . 2010012601 0 4294967296 0 0");
+    checkFromTextSOA<InvalidRRTTL, InvalidRRTTL>(
+        ". . 2010012601 0 0 bad 0");
+    checkFromTextSOA<InvalidRRTTL, InvalidRRTTL>(
+        ". . 2010012601 0 0 4294967296 0");
+    checkFromTextSOA<InvalidRRTTL, InvalidRRTTL>(
+        ". . 2010012601 0 0 0 bad");
+    checkFromTextSOA<InvalidRRTTL, InvalidRRTTL>(
+        ". . 2010012601 0 0 0 4294967296");
+
+    // No space between RNAME and serial.  This case is the same as missing
+    // M/RNAME.
+    checkFromTextSOA<MissingNameOrigin, MasterLexer::LexerError>(
+        ". example.0 0 0 0 0", &Name::ROOT_NAME());
+
+    // Extra parameter.  string version immediately detects the error.
+    // lexer version defers the check to the upper layer (we pass origin
+    // to skip the check with the string version).
+    checkFromTextSOA<InvalidRdataText, isc::Exception>(
+        "ns.example.com. root.example.com. 2010012601 1H 5M 1000H 20M "
+        "extra", &origin, true, false);
+
+    // Likewise.  Redundant newline is also considered an error.  The lexer
+    // version accepts trailing newline, but not the beginning one (where
+    // the lexer expects a string excluding newline and EOF).
+    checkFromTextSOA<InvalidRdataText, isc::Exception>(
+        "ns.example.com. root.example.com. 2010012601 1H 5M 1000H 20M\n",
+        NULL, true, false);
+    checkFromTextSOA<InvalidRdataText, MasterLexer::LexerError>(
+        "\nns.example.com. root.example.com. 2010012601 1H 5M 1000H 20M",
+        NULL, true, true);
+}
+
+TEST_F(Rdata_SOA_Test, createFromWire) {
+    EXPECT_EQ(0, rdata_soa.compare(
+                  *rdataFactoryFromFile(RRType("SOA"), RRClass("IN"),
+                                        "rdata_soa_fromWire")));
+    // TBD: more tests
+}
+
+TEST_F(Rdata_SOA_Test, createFromLexer) {
+    EXPECT_EQ(0, rdata_soa.compare(
+        *test::createRdataUsingLexer(RRType::SOA(), RRClass::IN(),
+                                     "ns.example.com. root.example.com. "
+                                     "2010012601 3600 300 3600000 1200")));
+}
+
+TEST_F(Rdata_SOA_Test, toWireRenderer) {
+    renderer.skip(2);
+    rdata_soa.toWire(renderer);
+
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("rdata_soa_fromWire", data);
+    matchWireData(&data[2], data.size() - 2,
+                  static_cast<const uint8_t *>(renderer.getData()) + 2,
+                  renderer.getLength() - 2);
+}
+
+TEST_F(Rdata_SOA_Test, toWireBuffer) {
+    obuffer.skip(2);
+    rdata_soa.toWire(obuffer);
+    vector<unsigned char> data;
+    UnitTestUtil::readWireData("rdata_soa_toWireUncompressed.wire", data);
+    matchWireData(&data[2], data.size() - 2,
+                  static_cast<const uint8_t *>(obuffer.getData()) + 2,
+                  obuffer.getLength() - 2);
+}
+
+TEST_F(Rdata_SOA_Test, toText) {
+    EXPECT_EQ("ns.example.com. root.example.com. "
+              "2010012601 3600 300 3600000 1200", rdata_soa.toText());
+}
+
+TEST_F(Rdata_SOA_Test, getSerial) {
+    EXPECT_EQ(2010012601, rdata_soa.getSerial().getValue());
+}
+
+TEST_F(Rdata_SOA_Test, getMinimum) {
+    EXPECT_EQ(1200, rdata_soa.getMinimum());
+
+    // Also check with a very large number (with the MSB being 1).
+    EXPECT_EQ(2154848336u, generic::SOA(Name("ns.example.com"),
+                                        Name("root.example.com"),
+                                        0, 0, 0, 0, 0x80706050).getMinimum());
+}
+
+void
+compareCheck(const generic::SOA& small, const generic::SOA& large) {
+    EXPECT_GT(0, small.compare(large));
+    EXPECT_LT(0, large.compare(small));
+}
+
+TEST_F(Rdata_SOA_Test, compare) {
+    // Check simple equivalence
+    EXPECT_EQ(0, rdata_soa.compare(generic::SOA(
+                                       "ns.example.com. root.example.com. "
+                                       "2010012601 3600 300 3600000 1200")));
+    // Check name comparison is case insensitive
+    EXPECT_EQ(0, rdata_soa.compare(generic::SOA(
+                                       "NS.example.com. root.EXAMPLE.com. "
+                                       "2010012601 3600 300 3600000 1200")));
+
+    // Check names are compared in the RDATA comparison semantics (different
+    // from DNSSEC ordering for owner names)
+    compareCheck(generic::SOA("a.example. . 0 0 0 0 0"),
+                 generic::SOA("example. . 0 0 0 0 0"));
+    compareCheck(generic::SOA(". a.example. 0 0 0 0 0"),
+                 generic::SOA(". example. 0 0 0 0 0"));
+
+    // Compare other numeric fields: 1076895760 = 0x40302010,
+    // 270544960 = 0x10203040.  These are chosen to make sure that machine
+    // endianness doesn't confuse the comparison results.
+    compareCheck(generic::SOA(". . 270544960 0 0 0 0"),
+                 generic::SOA(". . 1076895760 0 0 0 0"));
+    compareCheck(generic::SOA(". . 0 270544960 0 0 0"),
+                 generic::SOA(". . 0 1076895760 0 0 0"));
+    compareCheck(generic::SOA(". . 0 0 270544960 0 0"),
+                 generic::SOA(". . 0 0 1076895760 0 0"));
+    compareCheck(generic::SOA(". . 0 0 0 270544960 0"),
+                 generic::SOA(". . 0 0 0 1076895760 0"));
+    compareCheck(generic::SOA(". . 0 0 0 0 270544960"),
+                 generic::SOA(". . 0 0 0 0 1076895760"));
+}
+
+}
diff --git a/src/lib/dns/tests/rdata_srv_unittest.cc b/src/lib/dns/tests/rdata_srv_unittest.cc
new file mode 100644
index 0000000..a3296f2
--- /dev/null
+++ b/src/lib/dns/tests/rdata_srv_unittest.cc
@@ -0,0 +1,205 @@
+// Copyright (C) 2011-2019 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_SRV_Test : public RdataTest {
+public:
+    Rdata_SRV_Test() :
+        srv_txt("1 5 1500 a.example.com."),
+        srv_txt2("1 5 1400 example.com."),
+        too_long_label("012345678901234567890123456789"
+                       "0123456789012345678901234567890123."),
+        rdata_srv(srv_txt),
+        rdata_srv2(srv_txt2)
+    {}
+
+    const string srv_txt;
+    const string srv_txt2;
+    const string too_long_label;
+    const in::SRV rdata_srv;
+    const in::SRV rdata_srv2;
+};
+
+// 1 5 1500 a.example.com.
+const uint8_t wiredata_srv[] = {
+    0x00, 0x01, 0x00, 0x05, 0x05, 0xdc, 0x01, 0x61, 0x07, 0x65, 0x78,
+    0x61, 0x6d, 0x70, 0x6c, 0x65, 0x03, 0x63, 0x6f, 0x6d, 0x00};
+// 1 5 1400 example.com.
+const uint8_t wiredata_srv2[] = {
+    0x00, 0x01, 0x00, 0x05, 0x05, 0x78, 0x07, 0x65, 0x78, 0x61, 0x6d,
+    0x70, 0x6c, 0x65, 0x03, 0x63, 0x6f, 0x6d, 0x00};
+
+TEST_F(Rdata_SRV_Test, createFromText) {
+    EXPECT_EQ(1, rdata_srv.getPriority());
+    EXPECT_EQ(5, rdata_srv.getWeight());
+    EXPECT_EQ(1500, rdata_srv.getPort());
+    EXPECT_EQ(Name("a.example.com."), rdata_srv.getTarget());
+}
+
+TEST_F(Rdata_SRV_Test, badText) {
+    // priority is too large (2814...6 is 2^48)
+    EXPECT_THROW(in::SRV("281474976710656 5 1500 a.example.com."),
+                 InvalidRdataText);
+    // weight is too large
+    EXPECT_THROW(in::SRV("1 281474976710656 1500 a.example.com."),
+                 InvalidRdataText);
+    // port is too large
+    EXPECT_THROW(in::SRV("1 5 281474976710656 a.example.com."),
+                 InvalidRdataText);
+    // incomplete text
+    EXPECT_THROW(in::SRV("1 5 a.example.com."),
+                 InvalidRdataText);
+    EXPECT_THROW(in::SRV("1 5 1500a.example.com."),
+                 InvalidRdataText);
+    // bad name
+    EXPECT_THROW(in::SRV("1 5 1500 a.example.com." + too_long_label),
+                 TooLongLabel);
+    // Extra text at end of line
+    EXPECT_THROW(in::SRV("1 5 1500 a.example.com. extra."), InvalidRdataText);
+}
+
+TEST_F(Rdata_SRV_Test, assignment) {
+    in::SRV copy((string(srv_txt2)));
+    copy = rdata_srv;
+    EXPECT_EQ(0, copy.compare(rdata_srv));
+
+    // Check if the copied data is valid even after the original is deleted
+    in::SRV* copy2 = new in::SRV(rdata_srv);
+    in::SRV copy3((string(srv_txt2)));
+    copy3 = *copy2;
+    delete copy2;
+    EXPECT_EQ(0, copy3.compare(rdata_srv));
+
+    // Self assignment
+    copy = *&copy;
+    EXPECT_EQ(0, copy.compare(rdata_srv));
+}
+
+TEST_F(Rdata_SRV_Test, createFromWire) {
+    EXPECT_EQ(0, rdata_srv.compare(
+                  *rdataFactoryFromFile(RRType("SRV"), RRClass("IN"),
+                                        "rdata_srv_fromWire")));
+    // RDLENGTH is too short
+    EXPECT_THROW(rdataFactoryFromFile(RRType("SRV"), RRClass("IN"),
+                                      "rdata_srv_fromWire", 23),
+                 InvalidRdataLength);
+    // RDLENGTH is too long
+    EXPECT_THROW(rdataFactoryFromFile(RRType("SRV"), RRClass("IN"),
+                                      "rdata_srv_fromWire", 46),
+                 InvalidRdataLength);
+    // incomplete name.  the error should be detected in the name constructor
+    EXPECT_THROW(rdataFactoryFromFile(RRType("SRV"), RRClass("IN"),
+                                      "rdata_cname_fromWire", 69),
+                 DNSMessageFORMERR);
+    // parse compressed target name
+    EXPECT_EQ(0, rdata_srv.compare(
+                  *rdataFactoryFromFile(RRType("SRV"), RRClass("IN"),
+                                      "rdata_srv_fromWire", 89)));
+}
+
+TEST_F(Rdata_SRV_Test, createFromLexer) {
+    EXPECT_EQ(0, rdata_srv.compare(
+        *test::createRdataUsingLexer(RRType::SRV(), RRClass::IN(),
+                                     "1 5 1500 a.example.com.")));
+
+    // test::createRdataUsingLexer() constructs relative to
+    // "example.org." origin.
+    EXPECT_EQ(0, in::SRV("1 5 1500 server16.example.org.").compare(
+        *test::createRdataUsingLexer(RRType::SRV(), RRClass::IN(),
+                                     "1 5 1500 server16")));
+
+    // Exceptions cause NULL to be returned.
+
+    // Bad priority
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::SRV(), RRClass::IN(),
+                                             "65536 5 1500 "
+                                             "a.example.com."));
+    // Bad weight
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::SRV(), RRClass::IN(),
+                                             "1 65536 1500 "
+                                             "a.example.com."));
+    // Bad port
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::SRV(), RRClass::IN(),
+                                             "1 5 281474976710656 "
+                                             "a.example.com."));
+    // Extra text at end of line
+    EXPECT_FALSE(test::createRdataUsingLexer(RRType::SRV(), RRClass::IN(),
+                                             "1 5 1500 a.example.com. extra."));
+}
+
+TEST_F(Rdata_SRV_Test, toWireBuffer) {
+    rdata_srv.toWire(obuffer);
+    matchWireData(wiredata_srv, sizeof(wiredata_srv),
+                  obuffer.getData(), obuffer.getLength());
+
+    obuffer.clear();
+    rdata_srv2.toWire(obuffer);
+    matchWireData(wiredata_srv2, sizeof(wiredata_srv2),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_SRV_Test, toWireRenderer) {
+    rdata_srv.toWire(renderer);
+    matchWireData(wiredata_srv, sizeof(wiredata_srv),
+                  renderer.getData(), renderer.getLength());
+
+    renderer.clear();
+    rdata_srv2.toWire(renderer);
+    matchWireData(wiredata_srv2, sizeof(wiredata_srv2),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_SRV_Test, toText) {
+    EXPECT_EQ(srv_txt, rdata_srv.toText());
+    EXPECT_EQ(srv_txt2, rdata_srv2.toText());
+}
+
+TEST_F(Rdata_SRV_Test, compare) {
+    // test RDATAs, sorted in the ascending order.
+    vector<in::SRV> compare_set;
+    compare_set.push_back(in::SRV("1 5 1500 a.example.com."));
+    compare_set.push_back(in::SRV("2 5 1500 a.example.com."));
+    compare_set.push_back(in::SRV("2 6 1500 a.example.com."));
+    compare_set.push_back(in::SRV("2 6 1600 a.example.com."));
+    compare_set.push_back(in::SRV("2 6 1600 example.com."));
+
+    EXPECT_EQ(0, compare_set[0].compare(
+                  in::SRV("1 5 1500 a.example.com.")));
+
+    vector<in::SRV>::const_iterator it;
+    vector<in::SRV>::const_iterator it_end = compare_set.end();
+    for (it = compare_set.begin(); it != it_end - 1; ++it) {
+        EXPECT_GT(0, (*it).compare(*(it + 1)));
+        EXPECT_LT(0, (*(it + 1)).compare(*it));
+    }
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(rdata_srv.compare(*RdataTest::rdata_nomatch), bad_cast);
+}
+}
diff --git a/src/lib/dns/tests/rdata_sshfp_unittest.cc b/src/lib/dns/tests/rdata_sshfp_unittest.cc
new file mode 100644
index 0000000..2bf88f3
--- /dev/null
+++ b/src/lib/dns/tests/rdata_sshfp_unittest.cc
@@ -0,0 +1,311 @@
+// Copyright (C) 2012-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <algorithm>
+#include <string>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+#include <boost/algorithm/string.hpp>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_SSHFP_Test : public RdataTest {
+protected:
+        Rdata_SSHFP_Test() :
+            sshfp_txt("2 1 123456789abcdef67890123456789abcdef67890"),
+            rdata_sshfp(sshfp_txt)
+        {}
+
+    void checkFromText_None(const string& rdata_str) {
+        checkFromText<generic::SSHFP, isc::Exception, isc::Exception>(
+            rdata_str, rdata_sshfp, false, false);
+    }
+
+    void checkFromText_InvalidText(const string& rdata_str) {
+        checkFromText<generic::SSHFP, InvalidRdataText, InvalidRdataText>(
+            rdata_str, rdata_sshfp, true, true);
+    }
+
+    void checkFromText_LexerError(const string& rdata_str) {
+        checkFromText
+            <generic::SSHFP, InvalidRdataText, MasterLexer::LexerError>(
+                rdata_str, rdata_sshfp, true, true);
+    }
+
+    void checkFromText_BadString(const string& rdata_str) {
+        checkFromText
+            <generic::SSHFP, InvalidRdataText, isc::Exception>(
+                rdata_str, rdata_sshfp, true, false);
+    }
+
+    const string sshfp_txt;
+    const generic::SSHFP rdata_sshfp;
+};
+
+const uint8_t rdata_sshfp_wiredata[] = {
+    // algorithm
+    0x02,
+    // fingerprint type
+    0x01,
+    // fingerprint
+    0x12, 0x34, 0x56, 0x78,
+    0x9a, 0xbc, 0xde, 0xf6,
+    0x78, 0x90, 0x12, 0x34,
+    0x56, 0x78, 0x9a, 0xbc,
+    0xde, 0xf6, 0x78, 0x90
+};
+
+TEST_F(Rdata_SSHFP_Test, createFromText) {
+    // Basic test
+    checkFromText_None(sshfp_txt);
+
+    // With different spacing
+    checkFromText_None("2 1   123456789abcdef67890123456789abcdef67890");
+
+    // Combination of lowercase and uppercase
+    checkFromText_None("2 1 123456789ABCDEF67890123456789abcdef67890");
+
+    // spacing in the fingerprint field
+    checkFromText_None("2 1 123456789abcdef67890 123456789abcdef67890");
+
+    // multi-line fingerprint field
+    checkFromText_None("2 1 ( 123456789abcdef67890\n 123456789abcdef67890 )");
+
+    // string constructor throws if there's extra text,
+    // but lexer constructor doesn't
+    checkFromText_BadString(sshfp_txt + "\n" + sshfp_txt);
+}
+
+TEST_F(Rdata_SSHFP_Test, algorithmTypes) {
+    // Some of these may not be RFC conformant, but we relax the check
+    // in our code to work with algorithm and fingerprint types that may
+    // show up in the future.
+    EXPECT_NO_THROW(const generic::SSHFP rdata_sshfp("1 1 12ab"));
+    EXPECT_NO_THROW(const generic::SSHFP rdata_sshfp("2 1 12ab"));
+    EXPECT_NO_THROW(const generic::SSHFP rdata_sshfp("3 1 12ab"));
+    EXPECT_NO_THROW(const generic::SSHFP rdata_sshfp("128 1 12ab"));
+    EXPECT_NO_THROW(const generic::SSHFP rdata_sshfp("255 1 12ab"));
+    EXPECT_NO_THROW(const generic::SSHFP rdata_sshfp("1 1 12ab"));
+    EXPECT_NO_THROW(const generic::SSHFP rdata_sshfp("1 2 12ab"));
+    EXPECT_NO_THROW(const generic::SSHFP rdata_sshfp("1 3 12ab"));
+    EXPECT_NO_THROW(const generic::SSHFP rdata_sshfp("1 128 12ab"));
+    EXPECT_NO_THROW(const generic::SSHFP rdata_sshfp("1 255 12ab"));
+
+    // 0 is reserved, but we allow that too
+    EXPECT_NO_THROW(const generic::SSHFP rdata_sshfp("0 1 12ab"));
+    EXPECT_NO_THROW(const generic::SSHFP rdata_sshfp("1 0 12ab"));
+
+    // > 255 would be broken
+    EXPECT_THROW(const generic::SSHFP rdata_sshfp("256 1 12ab"),
+                 InvalidRdataText);
+    EXPECT_THROW(const generic::SSHFP rdata_sshfp("2 256 12ab"),
+                 InvalidRdataText);
+}
+
+TEST_F(Rdata_SSHFP_Test, badText) {
+    checkFromText_LexerError("1");
+    checkFromText_LexerError("ONE 2 123456789abcdef67890123456789abcdef67890");
+    checkFromText_LexerError("1 TWO 123456789abcdef67890123456789abcdef67890");
+    checkFromText_InvalidText("1 2 BUCKLEMYSHOE");
+    checkFromText_InvalidText(sshfp_txt + " extra text");
+
+    // yes, these are redundant to the last test cases in algorithmTypes
+    checkFromText_InvalidText(
+        "2345 1 123456789abcdef67890123456789abcdef67890");
+    checkFromText_InvalidText(
+        "2 1234 123456789abcdef67890123456789abcdef67890");
+
+    // negative values are trapped in the lexer rather than the constructor
+    checkFromText_LexerError("-2 1 123456789abcdef67890123456789abcdef67890");
+    checkFromText_LexerError("2 -1 123456789abcdef67890123456789abcdef67890");
+}
+
+TEST_F(Rdata_SSHFP_Test, copyAndAssign) {
+    // Copy construct
+    generic::SSHFP rdata_sshfp2(rdata_sshfp);
+    EXPECT_EQ(0, rdata_sshfp.compare(rdata_sshfp2));
+
+    // Assignment, mainly to confirm it doesn't cause disruption.
+    rdata_sshfp2 = rdata_sshfp;
+    EXPECT_EQ(0, rdata_sshfp.compare(rdata_sshfp2));
+}
+
+TEST_F(Rdata_SSHFP_Test, createFromWire) {
+    // Basic test
+    EXPECT_EQ(0, rdata_sshfp.compare(
+                  *rdataFactoryFromFile(RRType("SSHFP"), RRClass("IN"),
+                                        "rdata_sshfp_fromWire")));
+    // Combination of lowercase and uppercase
+    EXPECT_EQ(0, rdata_sshfp.compare(
+                  *rdataFactoryFromFile(RRType("SSHFP"), RRClass("IN"),
+                                        "rdata_sshfp_fromWire2")));
+    // algorithm=1, fingerprint=1
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType("SSHFP"), RRClass("IN"),
+                                         "rdata_sshfp_fromWire3.wire"));
+
+    // algorithm=255, fingerprint=1
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType("SSHFP"), RRClass("IN"),
+                                         "rdata_sshfp_fromWire4.wire"));
+
+    // algorithm=0, fingerprint=1
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType("SSHFP"), RRClass("IN"),
+                                         "rdata_sshfp_fromWire5.wire"));
+
+    // algorithm=5, fingerprint=0
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType("SSHFP"), RRClass("IN"),
+                                         "rdata_sshfp_fromWire6.wire"));
+
+    // algorithm=255, fingerprint=255
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType("SSHFP"), RRClass("IN"),
+                                         "rdata_sshfp_fromWire7.wire"));
+
+    // short fingerprint data
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType("SSHFP"), RRClass("IN"),
+                                         "rdata_sshfp_fromWire8.wire"));
+
+    // fingerprint is shorter than rdata len
+    EXPECT_THROW(rdataFactoryFromFile(RRType("SSHFP"), RRClass("IN"),
+                                      "rdata_sshfp_fromWire9"),
+                 InvalidBufferPosition);
+
+    // fingerprint is missing
+    EXPECT_THROW(rdataFactoryFromFile(RRType("SSHFP"), RRClass("IN"),
+                                      "rdata_sshfp_fromWire10"),
+                 InvalidBufferPosition);
+
+    // all rdata is missing
+    EXPECT_THROW(rdataFactoryFromFile(RRType("SSHFP"), RRClass("IN"),
+                                      "rdata_sshfp_fromWire11"),
+                 InvalidBufferPosition);
+}
+
+TEST_F(Rdata_SSHFP_Test, createFromParams) {
+    const generic::SSHFP rdata_sshfp2(
+        2, 1, "123456789abcdef67890123456789abcdef67890");
+    EXPECT_EQ(0, rdata_sshfp2.compare(rdata_sshfp));
+}
+
+TEST_F(Rdata_SSHFP_Test, toText) {
+    EXPECT_TRUE(boost::iequals(sshfp_txt, rdata_sshfp.toText()));
+
+    const string sshfp_txt2("2 1");
+    const generic::SSHFP rdata_sshfp2(sshfp_txt2);
+    EXPECT_TRUE(boost::iequals(sshfp_txt2, rdata_sshfp2.toText()));
+
+    const generic::SSHFP rdata_sshfp3("2 1 ");
+    EXPECT_TRUE(boost::iequals(sshfp_txt2, rdata_sshfp3.toText()));
+}
+
+TEST_F(Rdata_SSHFP_Test, toWire) {
+    this->obuffer.clear();
+    rdata_sshfp.toWire(this->obuffer);
+
+    EXPECT_EQ(sizeof (rdata_sshfp_wiredata),
+              this->obuffer.getLength());
+
+    matchWireData(rdata_sshfp_wiredata, sizeof(rdata_sshfp_wiredata),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_SSHFP_Test, compare) {
+    const generic::SSHFP rdata_sshfp2("2 1");
+    EXPECT_EQ(-1, rdata_sshfp2.compare(rdata_sshfp));
+    EXPECT_EQ(1, rdata_sshfp.compare(rdata_sshfp2));
+}
+
+TEST_F(Rdata_SSHFP_Test, getAlgorithmNumber) {
+    EXPECT_EQ(2, rdata_sshfp.getAlgorithmNumber());
+}
+
+TEST_F(Rdata_SSHFP_Test, getFingerprintType) {
+    EXPECT_EQ(1, rdata_sshfp.getFingerprintType());
+}
+
+TEST_F(Rdata_SSHFP_Test, getFingerprint) {
+    const std::vector<uint8_t>& fingerprint =
+        rdata_sshfp.getFingerprint();
+
+    EXPECT_EQ(rdata_sshfp.getFingerprintLength(),
+              fingerprint.size());
+    for (size_t i = 0; i < fingerprint.size(); ++i) {
+        EXPECT_EQ(rdata_sshfp_wiredata[i + 2],
+                  fingerprint.at(i));
+    }
+}
+
+TEST_F(Rdata_SSHFP_Test, getFingerprintLength) {
+    EXPECT_EQ(20, rdata_sshfp.getFingerprintLength());
+}
+
+TEST_F(Rdata_SSHFP_Test, emptyFingerprintFromWire) {
+    const uint8_t rdf_wiredata[] = {
+        // algorithm
+        0x04,
+        // fingerprint type
+        0x09
+    };
+
+    const generic::SSHFP rdf =
+        dynamic_cast<const generic::SSHFP&>
+        (*rdataFactoryFromFile(RRType("SSHFP"), RRClass("IN"),
+                               "rdata_sshfp_fromWire12"));
+
+    EXPECT_EQ(4, rdf.getAlgorithmNumber());
+    EXPECT_EQ(9, rdf.getFingerprintType());
+    EXPECT_EQ(0, rdf.getFingerprintLength());
+
+    this->obuffer.clear();
+    rdf.toWire(this->obuffer);
+
+    EXPECT_EQ(2, this->obuffer.getLength());
+
+    matchWireData(rdf_wiredata, sizeof(rdf_wiredata),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_SSHFP_Test, emptyFingerprintFromString) {
+    const generic::SSHFP rdata_sshfp2("5 6");
+    const uint8_t rdata_sshfp2_wiredata[] = {
+        // algorithm
+        0x05,
+        // fingerprint type
+        0x06
+    };
+
+    EXPECT_EQ(5, rdata_sshfp2.getAlgorithmNumber());
+    EXPECT_EQ(6, rdata_sshfp2.getFingerprintType());
+    EXPECT_EQ(0, rdata_sshfp2.getFingerprintLength());
+
+    this->obuffer.clear();
+    rdata_sshfp2.toWire(this->obuffer);
+
+    EXPECT_EQ(2, this->obuffer.getLength());
+
+    matchWireData(rdata_sshfp2_wiredata, sizeof(rdata_sshfp2_wiredata),
+                  obuffer.getData(), obuffer.getLength());
+}
+}
diff --git a/src/lib/dns/tests/rdata_tkey_unittest.cc b/src/lib/dns/tests/rdata_tkey_unittest.cc
new file mode 100644
index 0000000..8592a27
--- /dev/null
+++ b/src/lib/dns/tests/rdata_tkey_unittest.cc
@@ -0,0 +1,450 @@
+// Copyright (C) 2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <string>
+
+#include <exceptions/exceptions.h>
+
+#include <util/buffer.h>
+#include <util/time_utilities.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+#include <dns/tsigerror.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+
+class Rdata_TKEY_Test : public RdataTest {
+protected:
+    Rdata_TKEY_Test() :
+        // no Key or Other Data
+        valid_text1("gss-tsig. 20210501120000 20210501130000 GSS-API NOERROR 0 0"),
+        // Key but no Other Data
+        valid_text2("GSS-TSIG. 20210501120000 20210501130000 GSS-API BADSIG "
+                    "12 FAKEFAKEFAKEFAKE 0"),
+        // Key and Other Data
+        valid_text3("gss.tsig. 20210501120000 20210501130000 GSS-API BADSIG "
+                    "12 FAKEFAKEFAKEFAKE 6 FAKEFAKE"),
+        // Key and Other Data (with Error that doesn't expect Other Data)
+        valid_text4("gss.tsig. 20210501120000 20210501130000 3 BADSIG 12 "
+                    "FAKEFAKEFAKEFAKE 6 FAKEFAKE"),
+        // numeric error code
+        valid_text5("GSS-TSIG. 20210501120000 20210501130000 GSS-API 2845 12 "
+                    "FAKEFAKEFAKEFAKE 0"),
+        // GSS-API mode
+        valid_text6("gss-tsig. 20210501120000 20210501130000 GSS-API 0 12 "
+                    "FAKEFAKEFAKEFAKE 0"),
+        rdata_tkey(valid_text1)
+    {}
+
+    void checkFromText_None(const string& rdata_str) {
+        checkFromText<generic::TKEY, isc::Exception, isc::Exception>(
+            rdata_str, rdata_tkey, false, false);
+    }
+
+    void checkFromText_InvalidTime(const string& rdata_str) {
+        checkFromText<generic::TKEY, InvalidTime, InvalidTime>(
+            rdata_str, rdata_tkey, true, true);
+    }
+
+    void checkFromText_InvalidText(const string& rdata_str) {
+        checkFromText<generic::TKEY, InvalidRdataText, InvalidRdataText>(
+            rdata_str, rdata_tkey, true, true);
+    }
+
+    void checkFromText_BadValue(const string& rdata_str) {
+        checkFromText<generic::TKEY, BadValue, BadValue>(
+            rdata_str, rdata_tkey, true, true);
+    }
+
+    void checkFromText_LexerError(const string& rdata_str) {
+        checkFromText
+            <generic::TKEY, InvalidRdataText, MasterLexer::LexerError>(
+                rdata_str, rdata_tkey, true, true);
+    }
+
+    void checkFromText_TooLongLabel(const string& rdata_str) {
+        checkFromText<generic::TKEY, TooLongLabel, TooLongLabel>(
+            rdata_str, rdata_tkey, true, true);
+    }
+
+    void checkFromText_EmptyLabel(const string& rdata_str) {
+        checkFromText<generic::TKEY, EmptyLabel, EmptyLabel>(
+            rdata_str, rdata_tkey, true, true);
+    }
+
+    void checkFromText_BadString(const string& rdata_str) {
+        checkFromText
+            <generic::TKEY, InvalidRdataText, isc::Exception>(
+                rdata_str, rdata_tkey, true, false);
+    }
+
+    template <typename Output>
+    void toWireCommonChecks(Output& output) const;
+
+    const string valid_text1;
+    const string valid_text2;
+    const string valid_text3;
+    const string valid_text4;
+    const string valid_text5;
+    const string valid_text6;
+    vector<uint8_t> expect_data;
+    const generic::TKEY rdata_tkey; // commonly used test RDATA
+};
+
+TEST_F(Rdata_TKEY_Test, fromText) {
+    // normal case.  it also tests getter methods.
+    EXPECT_EQ(Name("gss-tsig"), rdata_tkey.getAlgorithm());
+    EXPECT_EQ(1619870400, rdata_tkey.getInception());
+    EXPECT_EQ("20210501120000", rdata_tkey.getInceptionDate());
+    EXPECT_EQ(1619874000, rdata_tkey.getExpire());
+    EXPECT_EQ("20210501130000", rdata_tkey.getExpireDate());
+    EXPECT_EQ(3, rdata_tkey.getMode());
+    EXPECT_EQ(0, rdata_tkey.getError());
+    EXPECT_EQ(0, rdata_tkey.getKeyLen());
+    EXPECT_EQ(static_cast<void*>(0), rdata_tkey.getKey());
+    EXPECT_EQ(0, rdata_tkey.getOtherLen());
+    EXPECT_EQ(static_cast<void*>(0), rdata_tkey.getOtherData());
+
+    generic::TKEY tkey2(valid_text2);
+    EXPECT_EQ(12, tkey2.getKeyLen());
+    EXPECT_EQ(TSIGError::BAD_SIG_CODE, tkey2.getError());
+
+    generic::TKEY tkey3(valid_text3);
+    EXPECT_EQ(6, tkey3.getOtherLen());
+
+    // The other data is unusual, but we don't reject it.
+    EXPECT_NO_THROW(generic::TKEY tkey4(valid_text4));
+
+    // numeric representation of TKEY error
+    generic::TKEY tkey5(valid_text5);
+    EXPECT_EQ(2845, tkey5.getError());
+
+    // symbolic representation of TKEY mode
+    generic::TKEY tkey6(valid_text6);
+    EXPECT_EQ(generic::TKEY::GSS_API_MODE, tkey6.getMode());
+
+    // not fully qualified algorithm name
+    generic::TKEY tkey1("gss-tsig 20210501120000 20210501130000 3 0 0 0");
+    EXPECT_EQ(0, tkey1.compare(rdata_tkey));
+
+    // multi-line rdata
+    checkFromText_None("gss-tsig. ( 20210501120000 20210501130000 GSS-API \n"
+                       "NOERROR 0 0 )");
+};
+
+TEST_F(Rdata_TKEY_Test, badText) {
+    // too many fields
+    checkFromText_BadString(valid_text1 + " 0 0");
+    // not enough fields
+    checkFromText_LexerError("foo 20210501120000 20210501130000 0 BADKEY");
+    // bad domain name
+    checkFromText_TooLongLabel(
+        "0123456789012345678901234567890123456789012345678901234567890123"
+        " 20210501120000 20210501130000 0 0 0 0");
+    checkFromText_EmptyLabel("foo..bar 20210501120000 20210501130000 0 0 0 0");
+    // invalid inception (no digit)
+    checkFromText_InvalidTime("foo TIME 20210501130000 0 0 0 0");
+    // invalid inception (bad format)
+    checkFromText_InvalidTime("foo 0 20210501130000 0 0 0 0");
+    // invalid expire (no digit)
+    checkFromText_InvalidTime("foo 20210501120000 TIME 0 0 0 0");
+    // invalid expire (bad format)
+    checkFromText_InvalidTime("foo 20210501120000 0 0 0 0 0");
+    // Unknown mode
+    checkFromText_InvalidText("foo 20210501120000 20210501130000 TEST 0 0 0");
+    // Numeric mode is is too large
+    checkFromText_InvalidText("foo 20210501120000 20210501130000 65536 0 0 0");
+    // Numeric mode is negative
+    checkFromText_InvalidText("foo 20210501120000 20210501130000 -1 0 0 0 0");
+    // Unknown error code
+    checkFromText_InvalidText("foo 20210501120000 20210501130000 0 TEST 0 0");
+    // Numeric error code is too large
+    checkFromText_InvalidText("foo 20210501120000 20210501130000 0 65536 0 0");
+    // Numeric error code is negative
+    checkFromText_InvalidText("foo 20210501120000 20210501130000 0 -1 0 0");
+    // Key len is too large
+    checkFromText_InvalidText("foo 20210501120000 20210501130000 0 0 65536 0");
+    // invalid Key len (negative)
+    checkFromText_LexerError("foo 20210501120000 20210501130000 0 0 -1 0");
+    // invalid Key len (not a number)
+    checkFromText_LexerError("foo 20210501120000 20210501130000 0 0 MACSIZE 0");
+    // Key len and Key mismatch
+    checkFromText_InvalidText("foo 20210501120000 20210501130000 0 0 9 FAKE 0");
+    // Key is bad base64
+    checkFromText_BadValue("foo 20210501120000 20210501130000 0 0 3 FAK= 0");
+    // Other len is too large
+    checkFromText_InvalidText("foo 20210501120000 20210501130000 0 0 0 65536 FAKE");
+    // Other len is negative
+    checkFromText_LexerError("foo 20210501120000 20210501130000 0 0 0 -1 FAKE");
+    // invalid Other len
+    checkFromText_LexerError("foo 20210501120000 20210501130000 0 0 0 LEN FAKE");
+    // Other len and data mismatch
+    checkFromText_InvalidText("foo 20210501120000 20210501130000 0 0 0 9 FAKE");
+}
+
+void
+fromWireCommonChecks(const generic::TKEY& tkey) {
+    EXPECT_EQ(Name("gss-tsig"), tkey.getAlgorithm());
+    EXPECT_EQ(1619870400, tkey.getInception());
+    EXPECT_EQ("20210501120000", tkey.getInceptionDate());
+    EXPECT_EQ(1619874000, tkey.getExpire());
+    EXPECT_EQ("20210501130000", tkey.getExpireDate());
+    EXPECT_EQ(3, tkey.getMode());
+    EXPECT_EQ(0, tkey.getError());
+
+    vector<uint8_t> expect_key(32, 'x');
+    matchWireData(&expect_key[0], expect_key.size(),
+                  tkey.getKey(), tkey.getKeyLen());
+
+    EXPECT_EQ(0, tkey.getOtherLen());
+    EXPECT_EQ(static_cast<const void*>(0), tkey.getOtherData());
+}
+
+TEST_F(Rdata_TKEY_Test, createFromWire) {
+    RdataPtr rdata(rdataFactoryFromFile(RRType::TKEY(), RRClass::ANY(),
+                                        "rdata_tkey_fromWire1.wire"));
+    fromWireCommonChecks(dynamic_cast<generic::TKEY&>(*rdata));
+}
+
+TEST_F(Rdata_TKEY_Test, createFromWireWithOtherData) {
+    RdataPtr rdata(rdataFactoryFromFile(RRType::TKEY(), RRClass::ANY(),
+                                        "rdata_tkey_fromWire2.wire"));
+    const generic::TKEY& tkey(dynamic_cast<generic::TKEY&>(*rdata));
+
+    vector<uint8_t> expect_key(32, 'x');
+    matchWireData(&expect_key[0], expect_key.size(),
+                  tkey.getKey(), tkey.getKeyLen());
+
+    vector<uint8_t> expect_data = { 'a', 'b', 'c', 'd', '0', '1', '2', '3' };
+    matchWireData(&expect_data[0], expect_data.size(),
+                  tkey.getOtherData(), tkey.getOtherLen());
+}
+
+TEST_F(Rdata_TKEY_Test, createFromWireWithoutKey) {
+    RdataPtr rdata(rdataFactoryFromFile(RRType::TKEY(), RRClass::ANY(),
+                                        "rdata_tkey_fromWire3.wire"));
+    const generic::TKEY& tkey(dynamic_cast<generic::TKEY&>(*rdata));
+    EXPECT_EQ(0, tkey.getKeyLen());
+    EXPECT_EQ(static_cast<const void*>(0), tkey.getKey());
+
+    vector<uint8_t> expect_data = { 'a', 'b', 'c', 'd', '0', '1', '2', '3' };
+    matchWireData(&expect_data[0], expect_data.size(),
+                  tkey.getOtherData(), tkey.getOtherLen());
+}
+
+TEST_F(Rdata_TKEY_Test, createFromWireWithCompression) {
+    RdataPtr rdata(rdataFactoryFromFile(RRType::TKEY(), RRClass::ANY(),
+                                        "rdata_tkey_fromWire4.wire",
+                                        // we need to skip the dummy name:
+                                        Name("gss-tsig").getLength()));
+    fromWireCommonChecks(dynamic_cast<generic::TKEY&>(*rdata));
+}
+
+TEST_F(Rdata_TKEY_Test, badFromWire) {
+    // RDLENGTH is too short:
+    EXPECT_THROW(rdataFactoryFromFile(RRType::TKEY(), RRClass::ANY(),
+                                      "rdata_tkey_fromWire5.wire"),
+                 InvalidRdataLength);
+    // RDLENGTH is too long:
+    EXPECT_THROW(rdataFactoryFromFile(RRType::TKEY(), RRClass::ANY(),
+                                      "rdata_tkey_fromWire6.wire"),
+                 InvalidRdataLength);
+    // Algorithm name is broken:
+    EXPECT_THROW(rdataFactoryFromFile(RRType::TKEY(), RRClass::ANY(),
+                                      "rdata_tkey_fromWire7.wire"),
+                 DNSMessageFORMERR);
+    // Key length is bogus:
+    EXPECT_THROW(rdataFactoryFromFile(RRType::TKEY(), RRClass::ANY(),
+                                      "rdata_tkey_fromWire8.wire"),
+                 InvalidBufferPosition);
+    // Other-data length is bogus:
+    EXPECT_THROW(rdataFactoryFromFile(RRType::TKEY(), RRClass::ANY(),
+                                      "rdata_tkey_fromWire9.wire"),
+                 InvalidBufferPosition);
+}
+
+TEST_F(Rdata_TKEY_Test, copyConstruct) {
+    const generic::TKEY copy(rdata_tkey);
+    EXPECT_EQ(0, copy.compare(rdata_tkey));
+
+    // Check the copied data is valid even after the original is deleted
+    generic::TKEY* copy2 = new generic::TKEY(rdata_tkey);
+    generic::TKEY copy3(*copy2);
+    delete copy2;
+    EXPECT_EQ(0, copy3.compare(rdata_tkey));
+}
+
+TEST_F(Rdata_TKEY_Test, createFromParams) {
+    EXPECT_EQ(0, rdata_tkey.compare(generic::TKEY(Name("gss-tsig"),
+                                                  1619870400,
+                                                  1619874000,
+                                                  3, 0, 0, 0, 0, 0)));
+
+    const uint8_t fake_data[] = { 0x14, 0x02, 0x84, 0x14, 0x02, 0x84,
+                                  0x14, 0x02, 0x84, 0x14, 0x02, 0x84 };
+    EXPECT_EQ(0, generic::TKEY(valid_text2).compare(
+                  generic::TKEY(Name("GSS-TSIG"), 1619870400, 1619874000,
+                                3, 16, 12, fake_data, 0, 0)));
+
+    const uint8_t fake_data2[] = { 0x14, 0x02, 0x84, 0x14, 0x02, 0x84 };
+    EXPECT_EQ(0, generic::TKEY(valid_text3).compare(
+                  generic::TKEY(Name("gss.tsig"), 1619870400, 1619874000,
+                                3, 16, 12, fake_data, 6, fake_data2)));
+
+    EXPECT_THROW(generic::TKEY(Name("gss-tsig"), 0, 0, 0, 0, 0, fake_data, 0, 0),
+                 isc::InvalidParameter);
+    EXPECT_THROW(generic::TKEY(Name("gss-tsig"), 0, 0, 0, 0, 12, 0, 0, 0),
+                 isc::InvalidParameter);
+    EXPECT_THROW(generic::TKEY(Name("gss-tsig"), 0, 0, 0, 0, 0, 0, 0, fake_data),
+                 isc::InvalidParameter);
+    EXPECT_THROW(generic::TKEY(Name("fake_data"),  0, 0, 0, 0, 0, 0, 6, 0),
+                 isc::InvalidParameter);
+}
+
+TEST_F(Rdata_TKEY_Test, assignment) {
+    generic::TKEY copy(valid_text2);
+    copy = rdata_tkey;
+    EXPECT_EQ(0, copy.compare(rdata_tkey));
+
+    // Check if the copied data is valid even after the original is deleted
+    generic::TKEY* copy2 = new generic::TKEY(rdata_tkey);
+    generic::TKEY copy3(valid_text2);
+    copy3 = *copy2;
+    delete copy2;
+    EXPECT_EQ(0, copy3.compare(rdata_tkey));
+
+    // Self assignment
+    copy = *&copy;
+    EXPECT_EQ(0, copy.compare(rdata_tkey));
+}
+
+template <typename Output>
+void
+Rdata_TKEY_Test::toWireCommonChecks(Output& output) const {
+    vector<uint8_t> expect_data;
+
+    output.clear();
+    expect_data.clear();
+    rdata_tkey.toWire(output);
+    // read the expected wire format data and trim the RDLEN part.
+    UnitTestUtil::readWireData("rdata_tkey_toWire1.wire", expect_data);
+    expect_data.erase(expect_data.begin(), expect_data.begin() + 2);
+    matchWireData(&expect_data[0], expect_data.size(),
+                  output.getData(), output.getLength());
+
+    expect_data.clear();
+    output.clear();
+    generic::TKEY(valid_text2).toWire(output);
+    UnitTestUtil::readWireData("rdata_tkey_toWire2.wire", expect_data);
+    expect_data.erase(expect_data.begin(), expect_data.begin() + 2);
+    matchWireData(&expect_data[0], expect_data.size(),
+                  output.getData(), output.getLength());
+
+    expect_data.clear();
+    output.clear();
+    generic::TKEY(valid_text3).toWire(output);
+    UnitTestUtil::readWireData("rdata_tkey_toWire3.wire", expect_data);
+    expect_data.erase(expect_data.begin(), expect_data.begin() + 2);
+    matchWireData(&expect_data[0], expect_data.size(),
+                  output.getData(), output.getLength());
+}
+
+TEST_F(Rdata_TKEY_Test, toWireBuffer) {
+    toWireCommonChecks<OutputBuffer>(obuffer);
+}
+
+TEST_F(Rdata_TKEY_Test, toWireRenderer) {
+    toWireCommonChecks<MessageRenderer>(renderer);
+
+    // check algorithm name won't compressed when it would otherwise.
+    expect_data.clear();
+    renderer.clear();
+    renderer.writeName(Name("gss-tsig"));
+    renderer.writeUint16(26); // RDLEN
+    rdata_tkey.toWire(renderer);
+    UnitTestUtil::readWireData("rdata_tkey_toWire4.wire", expect_data);
+    matchWireData(&expect_data[0], expect_data.size(),
+                  renderer.getData(), renderer.getLength());
+
+    // check algorithm can be used as a compression target.
+    expect_data.clear();
+    renderer.clear();
+    renderer.writeUint16(26);
+    rdata_tkey.toWire(renderer);
+    renderer.writeName(Name("gss-tsig"));
+    UnitTestUtil::readWireData("rdata_tkey_toWire5.wire", expect_data);
+    matchWireData(&expect_data[0], expect_data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_TKEY_Test, toText) {
+    EXPECT_EQ(valid_text1, rdata_tkey.toText());
+    EXPECT_EQ(valid_text2, generic::TKEY(valid_text2).toText());
+    EXPECT_EQ(valid_text3, generic::TKEY(valid_text3).toText());
+    EXPECT_EQ(valid_text5, generic::TKEY(valid_text5).toText());
+}
+
+TEST_F(Rdata_TKEY_Test, compare) {
+    // test RDATAs, sorted in the ascending order.
+    // "AAAA" encoded in BASE64 corresponds to 0x000000, so it should be the
+    // smallest data of the same length.
+    vector<generic::TKEY> compare_set;
+    compare_set.push_back(generic::TKEY("a.example 20210501120000 "
+                                        "20210501130000 3 0 0 0"));
+    compare_set.push_back(generic::TKEY("example 20210501120000 "
+                                        "20210501130000 3 0 0 0"));
+    compare_set.push_back(generic::TKEY("example 20210501120001 "
+                                        "20210501130000 3 0 0 0"));
+    compare_set.push_back(generic::TKEY("example 20210501120001 "
+                                        "20210501130001 3 0 0 0"));
+    compare_set.push_back(generic::TKEY("example 20210501120001 "
+                                        "20210501130001 4 0 0 0"));
+    compare_set.push_back(generic::TKEY("example 20210501120001 "
+                                        "20210501130001 4 1 0 0"));
+    compare_set.push_back(generic::TKEY("example 20210501120001 "
+                                        "20210501130001 4 1 3 AAAA 0"));
+    compare_set.push_back(generic::TKEY("example 20210501120001 "
+                                        "20210501130001 4 1 3 FAKE 0"));
+    compare_set.push_back(generic::TKEY("example 20210501120001 "
+                                        "20210501130001 4 1 3 FAKE 3 AAAA"));
+    compare_set.push_back(generic::TKEY("example 20210501120001 "
+                                        "20210501130001 4 1 3 FAKE 3 FAKE"));
+
+    EXPECT_EQ(0,
+              compare_set[0].compare(generic::TKEY("A.EXAMPLE 20210501120000 "
+                                                   "20210501130000 3 0 0 0")));
+
+    vector<generic::TKEY>::const_iterator it;
+    vector<generic::TKEY>::const_iterator it_end = compare_set.end();
+    for (it = compare_set.begin(); it != it_end - 1; ++it) {
+        EXPECT_GT(0, (*it).compare(*(it + 1)));
+        EXPECT_LT(0, (*(it + 1)).compare(*it));
+    }
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(rdata_tkey.compare(*RdataTest::rdata_nomatch), bad_cast);
+}
+}
diff --git a/src/lib/dns/tests/rdata_tlsa_unittest.cc b/src/lib/dns/tests/rdata_tlsa_unittest.cc
new file mode 100644
index 0000000..92970cb
--- /dev/null
+++ b/src/lib/dns/tests/rdata_tlsa_unittest.cc
@@ -0,0 +1,276 @@
+// Copyright (C) 2014-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <algorithm>
+#include <string>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+#include <boost/algorithm/string.hpp>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class Rdata_TLSA_Test : public RdataTest {
+protected:
+        Rdata_TLSA_Test() :
+            tlsa_txt("0 0 1 d2abde240d7cd3ee6b4b28c54df034b9"
+                     "7983a1d16e8a410e4561cb106618e971"),
+            rdata_tlsa(tlsa_txt)
+        {}
+
+    void checkFromText_None(const string& rdata_str) {
+        checkFromText<generic::TLSA, isc::Exception, isc::Exception>(
+            rdata_str, rdata_tlsa, false, false);
+    }
+
+    void checkFromText_InvalidText(const string& rdata_str) {
+        checkFromText<generic::TLSA, InvalidRdataText, InvalidRdataText>(
+            rdata_str, rdata_tlsa, true, true);
+    }
+
+    void checkFromText_LexerError(const string& rdata_str) {
+        checkFromText
+            <generic::TLSA, InvalidRdataText, MasterLexer::LexerError>(
+                rdata_str, rdata_tlsa, true, true);
+    }
+
+    void checkFromText_BadString(const string& rdata_str) {
+        checkFromText
+            <generic::TLSA, InvalidRdataText, isc::Exception>(
+                rdata_str, rdata_tlsa, true, false);
+    }
+
+    const string tlsa_txt;
+    const generic::TLSA rdata_tlsa;
+};
+
+const uint8_t rdata_tlsa_wiredata[] = {
+    // certificate usage
+    0x00,
+    // selector
+    0x00,
+    // matching type
+    0x01,
+    // certificate association data
+    0xd2, 0xab, 0xde, 0x24, 0x0d, 0x7c, 0xd3, 0xee,
+    0x6b, 0x4b, 0x28, 0xc5, 0x4d, 0xf0, 0x34, 0xb9,
+    0x79, 0x83, 0xa1, 0xd1, 0x6e, 0x8a, 0x41, 0x0e,
+    0x45, 0x61, 0xcb, 0x10, 0x66, 0x18, 0xe9, 0x71
+};
+
+TEST_F(Rdata_TLSA_Test, createFromText) {
+    // Basic test
+    checkFromText_None(tlsa_txt);
+
+    // With different spacing
+    checkFromText_None("0 0 1    d2abde240d7cd3ee6b4b28c54df034b9"
+                       "7983a1d16e8a410e4561cb106618e971");
+
+    // Combination of lowercase and uppercase
+    checkFromText_None("0 0 1 D2ABDE240D7CD3EE6B4B28C54DF034B9"
+                       "7983a1d16e8a410e4561cb106618e971");
+
+    // spacing in the certificate association data field
+    checkFromText_None("0 0 1 d2abde240d7cd3ee6b4b28c54df034b9"
+                       "      7983a1d16e8a410e4561cb106618e971");
+
+    // multi-line certificate association data field
+    checkFromText_None("0 0 1 ( d2abde240d7cd3ee6b4b28c54df034b9\n"
+                       "        7983a1d16e8a410e4561cb106618e971 )");
+
+    // string constructor throws if there's extra text,
+    // but lexer constructor doesn't
+    checkFromText_BadString(tlsa_txt + "\n" + tlsa_txt);
+}
+
+TEST_F(Rdata_TLSA_Test, fields) {
+    // Some of these may not be RFC conformant, but we relax the check
+    // in our code to work with other field values that may show up in
+    // the future.
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("1 0 1 12ab"));
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("2 0 1 12ab"));
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("3 0 1 12ab"));
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("128 0 1 12ab"));
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("255 0 1 12ab"));
+
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("0 1 1 12ab"));
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("0 2 1 12ab"));
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("0 3 1 12ab"));
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("0 128 1 12ab"));
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("0 255 1 12ab"));
+
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("0 0 1 12ab"));
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("0 0 2 12ab"));
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("0 0 3 12ab"));
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("0 0 128 12ab"));
+    EXPECT_NO_THROW(const generic::TLSA rdata_tlsa("0 0 255 12ab"));
+
+    // > 255 would be broken
+    EXPECT_THROW(const generic::TLSA rdata_tlsa("256 0 1 12ab"),
+                 InvalidRdataText);
+    EXPECT_THROW(const generic::TLSA rdata_tlsa("0 256 1 12ab"),
+                 InvalidRdataText);
+    EXPECT_THROW(const generic::TLSA rdata_tlsa("0 0 256 12ab"),
+                 InvalidRdataText);
+}
+
+TEST_F(Rdata_TLSA_Test, badText) {
+    checkFromText_LexerError("1");
+    checkFromText_LexerError("ONE 2 3 123456789abcdef67890123456789abcdef67890");
+    checkFromText_LexerError("1 TWO 3 123456789abcdef67890123456789abcdef67890");
+    checkFromText_LexerError("1 2 THREE 123456789abcdef67890123456789abcdef67890");
+    checkFromText_InvalidText("1 2 3 BAABAABLACKSHEEP");
+    checkFromText_InvalidText(tlsa_txt + " extra text");
+
+    // yes, these are redundant to the last test cases in the .fields
+    // test
+    checkFromText_InvalidText(
+        "2345 1 2 123456789abcdef67890123456789abcdef67890");
+    checkFromText_InvalidText(
+        "3 1234 4 123456789abcdef67890123456789abcdef67890");
+    checkFromText_InvalidText(
+        "5 6 1234 123456789abcdef67890123456789abcdef67890");
+
+    // negative values are trapped in the lexer rather than the
+    // constructor
+    checkFromText_LexerError("-2 0 1 123456789abcdef67890123456789abcdef67890");
+    checkFromText_LexerError("0 -2 1 123456789abcdef67890123456789abcdef67890");
+    checkFromText_LexerError("0 0 -2 123456789abcdef67890123456789abcdef67890");
+}
+
+TEST_F(Rdata_TLSA_Test, copyAndAssign) {
+    // Copy construct
+    generic::TLSA rdata_tlsa2(rdata_tlsa);
+    EXPECT_EQ(0, rdata_tlsa.compare(rdata_tlsa2));
+
+    // Assignment, mainly to confirm it doesn't cause disruption.
+    rdata_tlsa2 = rdata_tlsa;
+    EXPECT_EQ(0, rdata_tlsa.compare(rdata_tlsa2));
+}
+
+TEST_F(Rdata_TLSA_Test, createFromWire) {
+    // Basic test
+    EXPECT_EQ(0, rdata_tlsa.compare(
+                  *rdataFactoryFromFile(RRType("TLSA"), RRClass("IN"),
+                                        "rdata_tlsa_fromWire")));
+    // Combination of lowercase and uppercase
+    EXPECT_EQ(0, rdata_tlsa.compare(
+                  *rdataFactoryFromFile(RRType("TLSA"), RRClass("IN"),
+                                        "rdata_tlsa_fromWire2")));
+    // certificate_usage=0, selector=0, matching_type=1
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType("TLSA"), RRClass("IN"),
+                                         "rdata_tlsa_fromWire3.wire"));
+
+    // certificate_usage=255, selector=0, matching_type=1
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType("TLSA"), RRClass("IN"),
+                                         "rdata_tlsa_fromWire4.wire"));
+
+    // certificate_usage=0, selector=255, matching_type=1
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType("TLSA"), RRClass("IN"),
+                                         "rdata_tlsa_fromWire5.wire"));
+
+    // certificate_usage=0, selector=0, matching_type=255
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType("TLSA"), RRClass("IN"),
+                                         "rdata_tlsa_fromWire6.wire"));
+
+    // certificate_usage=3, selector=1, matching_type=2
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType("TLSA"), RRClass("IN"),
+                                         "rdata_tlsa_fromWire7.wire"));
+
+    // short certificate association data
+    EXPECT_NO_THROW(rdataFactoryFromFile(RRType("TLSA"), RRClass("IN"),
+                                         "rdata_tlsa_fromWire8.wire"));
+
+    // certificate association data is shorter than rdata len
+    EXPECT_THROW(rdataFactoryFromFile(RRType("TLSA"), RRClass("IN"),
+                                      "rdata_tlsa_fromWire9"),
+                 InvalidBufferPosition);
+
+    // certificate association data is missing
+    EXPECT_THROW(rdataFactoryFromFile(RRType("TLSA"), RRClass("IN"),
+                                      "rdata_tlsa_fromWire10"),
+                 InvalidBufferPosition);
+
+    // certificate association data is empty
+    EXPECT_THROW(rdataFactoryFromFile(RRType("TLSA"), RRClass("IN"),
+                                      "rdata_tlsa_fromWire12"),
+                 InvalidRdataLength);
+
+    // all RDATA is missing
+    EXPECT_THROW(rdataFactoryFromFile(RRType("TLSA"), RRClass("IN"),
+                                      "rdata_tlsa_fromWire11"),
+                 InvalidBufferPosition);
+}
+
+TEST_F(Rdata_TLSA_Test, createFromParams) {
+    const generic::TLSA rdata_tlsa2(
+        0, 0, 1, "d2abde240d7cd3ee6b4b28c54df034b9"
+                 "7983a1d16e8a410e4561cb106618e971");
+    EXPECT_EQ(0, rdata_tlsa2.compare(rdata_tlsa));
+
+    // empty certificate association data should throw
+    EXPECT_THROW(const generic::TLSA rdata_tlsa2(0, 0, 1, ""),
+                 InvalidRdataText);
+}
+
+TEST_F(Rdata_TLSA_Test, toText) {
+    EXPECT_TRUE(boost::iequals(tlsa_txt, rdata_tlsa.toText()));
+}
+
+TEST_F(Rdata_TLSA_Test, toWire) {
+    this->obuffer.clear();
+    rdata_tlsa.toWire(this->obuffer);
+
+    EXPECT_EQ(sizeof (rdata_tlsa_wiredata),
+              this->obuffer.getLength());
+
+    matchWireData(rdata_tlsa_wiredata, sizeof(rdata_tlsa_wiredata),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_TLSA_Test, compare) {
+    const generic::TLSA rdata_tlsa2("0 0 0 d2abde240d7cd3ee6b4b28c54df034b9"
+                                    "7983a1d16e8a410e4561cb106618e971");
+    EXPECT_EQ(-1, rdata_tlsa2.compare(rdata_tlsa));
+    EXPECT_EQ(1, rdata_tlsa.compare(rdata_tlsa2));
+}
+
+TEST_F(Rdata_TLSA_Test, getCertificateUsage) {
+    EXPECT_EQ(0, rdata_tlsa.getCertificateUsage());
+}
+
+TEST_F(Rdata_TLSA_Test, getSelector) {
+    EXPECT_EQ(0, rdata_tlsa.getSelector());
+}
+
+TEST_F(Rdata_TLSA_Test, getMatchingType) {
+    EXPECT_EQ(1, rdata_tlsa.getMatchingType());
+}
+
+TEST_F(Rdata_TLSA_Test, getDataLength) {
+    EXPECT_EQ(32, rdata_tlsa.getDataLength());
+}
+}
diff --git a/src/lib/dns/tests/rdata_tsig_unittest.cc b/src/lib/dns/tests/rdata_tsig_unittest.cc
new file mode 100644
index 0000000..9d3bd89
--- /dev/null
+++ b/src/lib/dns/tests/rdata_tsig_unittest.cc
@@ -0,0 +1,423 @@
+// Copyright (C) 2010-2023 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <string>
+
+#include <exceptions/exceptions.h>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+#include <dns/tsigerror.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using namespace isc::dns::rdata::any;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+
+class Rdata_TSIG_Test : public RdataTest {
+protected:
+    Rdata_TSIG_Test() :
+        // no MAC or Other Data
+        valid_text1("hmac-md5.sig-alg.reg.int. 1286779327 300 "
+                    "0 16020 BADKEY 0"),
+        // MAC but no Other Data
+        valid_text2("hmac-sha256. 1286779327 300 12 "
+                    "FAKEFAKEFAKEFAKE 16020 BADSIG 0"),
+        // MAC and Other Data
+        valid_text3("hmac-sha1. 1286779327 300 12 "
+                    "FAKEFAKEFAKEFAKE 16020 BADTIME 6 FAKEFAKE"),
+        // MAC and Other Data (with Error that doesn't expect Other Data)
+        valid_text4("hmac-sha1. 1286779327 300 12 "
+                    "FAKEFAKEFAKEFAKE 16020 BADSIG 6 FAKEFAKE"),
+        // numeric error code
+        valid_text5("hmac-sha256. 1286779327 300 12 "
+                    "FAKEFAKEFAKEFAKE 16020 2845 0"),
+        rdata_tsig(valid_text1)
+    {}
+
+    void checkFromText_None(const string& rdata_str) {
+        checkFromText<TSIG, isc::Exception, isc::Exception>(
+            rdata_str, rdata_tsig, false, false);
+    }
+
+    void checkFromText_InvalidText(const string& rdata_str) {
+        checkFromText<TSIG, InvalidRdataText, InvalidRdataText>(
+            rdata_str, rdata_tsig, true, true);
+    }
+
+    void checkFromText_BadValue(const string& rdata_str) {
+        checkFromText<TSIG, BadValue, BadValue>(
+            rdata_str, rdata_tsig, true, true);
+    }
+
+    void checkFromText_LexerError(const string& rdata_str) {
+        checkFromText
+            <TSIG, InvalidRdataText, MasterLexer::LexerError>(
+                rdata_str, rdata_tsig, true, true);
+    }
+
+    void checkFromText_TooLongLabel(const string& rdata_str) {
+        checkFromText<TSIG, TooLongLabel, TooLongLabel>(
+            rdata_str, rdata_tsig, true, true);
+    }
+
+    void checkFromText_EmptyLabel(const string& rdata_str) {
+        checkFromText<TSIG, EmptyLabel, EmptyLabel>(
+            rdata_str, rdata_tsig, true, true);
+    }
+
+    void checkFromText_BadString(const string& rdata_str) {
+        checkFromText
+            <TSIG, InvalidRdataText, isc::Exception>(
+                rdata_str, rdata_tsig, true, false);
+    }
+
+    template <typename Output>
+    void toWireCommonChecks(Output& output) const;
+
+    const string valid_text1;
+    const string valid_text2;
+    const string valid_text3;
+    const string valid_text4;
+    const string valid_text5;
+    vector<uint8_t> expect_data;
+    const TSIG rdata_tsig; // commonly used test RDATA
+};
+
+TEST_F(Rdata_TSIG_Test, fromText) {
+    // normal case.  it also tests getter methods.
+    EXPECT_EQ(Name("hmac-md5.sig-alg.reg.int"), rdata_tsig.getAlgorithm());
+    EXPECT_EQ(1286779327, rdata_tsig.getTimeSigned());
+    EXPECT_EQ(300, rdata_tsig.getFudge());
+    EXPECT_EQ(0, rdata_tsig.getMACSize());
+    EXPECT_EQ(static_cast<void*>(NULL), rdata_tsig.getMAC());
+    EXPECT_EQ(16020, rdata_tsig.getOriginalID());
+    EXPECT_EQ(TSIGError::BAD_KEY_CODE, rdata_tsig.getError());
+    EXPECT_EQ(0, rdata_tsig.getOtherLen());
+    EXPECT_EQ(static_cast<void*>(NULL), rdata_tsig.getOtherData());
+
+    TSIG tsig2(valid_text2);
+    EXPECT_EQ(12, tsig2.getMACSize());
+    EXPECT_EQ(TSIGError::BAD_SIG_CODE, tsig2.getError());
+
+    TSIG tsig3(valid_text3);
+    EXPECT_EQ(6, tsig3.getOtherLen());
+
+    // The other data is unusual, but we don't reject it.
+    EXPECT_NO_THROW(TSIG tsig4(valid_text4));
+
+    // numeric representation of TSIG error
+    TSIG tsig5(valid_text5);
+    EXPECT_EQ(2845, tsig5.getError());
+
+    // not fully qualified algorithm name
+    TSIG tsig1("hmac-md5.sig-alg.reg.int 1286779327 300 0 16020 BADKEY 0");
+    EXPECT_EQ(0, tsig1.compare(rdata_tsig));
+
+    // multi-line rdata
+    checkFromText_None("hmac-md5.sig-alg.reg.int. ( 1286779327 300 \n"
+                       "0 16020 BADKEY 0 )");
+
+    // short-form HMAC-MD5 name
+    const TSIG tsig6("hmac-md5. 1286779327 300 0 16020 BADKEY 0");
+    EXPECT_EQ(0, tsig6.compare(rdata_tsig));
+};
+
+TEST_F(Rdata_TSIG_Test, badText) {
+    // too many fields
+    checkFromText_BadString(valid_text1 + " 0 0");
+    // not enough fields
+    checkFromText_LexerError("foo 0 0 0 0 BADKEY");
+    // bad domain name
+    checkFromText_TooLongLabel(
+        "0123456789012345678901234567890123456789012345678901234567890123"
+        " 0 0 0 0 BADKEY 0");
+    checkFromText_EmptyLabel("foo..bar 0 0 0 0 BADKEY");
+    // time is too large (2814...6 is 2^48)
+    checkFromText_InvalidText("foo 281474976710656 0 0 0 BADKEY 0");
+    // invalid time (negative)
+    checkFromText_InvalidText("foo -1 0 0 0 BADKEY 0");
+    // invalid time (not a number)
+    checkFromText_InvalidText("foo TIME 0 0 0 BADKEY 0");
+    // fudge is too large
+    checkFromText_InvalidText("foo 0 65536 0 0 BADKEY 0");
+    // invalid fudge (negative)
+    checkFromText_LexerError("foo 0 -1 0 0 BADKEY 0");
+    // invalid fudge (not a number)
+    checkFromText_LexerError("foo 0 FUDGE 0 0 BADKEY 0");
+    // MAC size is too large
+    checkFromText_InvalidText("foo 0 0 65536 0 BADKEY 0");
+    // invalid MAC size (negative)
+    checkFromText_LexerError("foo 0 0 -1 0 BADKEY 0");
+    // invalid MAC size (not a number)
+    checkFromText_LexerError("foo 0 0 MACSIZE 0 BADKEY 0");
+    // MAC size and MAC mismatch
+    checkFromText_InvalidText("foo 0 0 9 FAKE 0 BADKEY 0");
+    // MAC is bad base64
+    checkFromText_BadValue("foo 0 0 3 FAK= 0 BADKEY 0");
+    // Unknown error code
+    checkFromText_InvalidText("foo 0 0 0 0 TEST 0");
+    // Numeric error code is too large
+    checkFromText_InvalidText("foo 0 0 0 0 65536 0");
+    // Numeric error code is negative
+    checkFromText_InvalidText("foo 0 0 0 0 -1 0");
+    // Other len is too large
+    checkFromText_InvalidText("foo 0 0 0 0 NOERROR 65536 FAKE");
+    // Other len is negative
+    checkFromText_LexerError("foo 0 0 0 0 NOERROR -1 FAKE");
+    // invalid Other len
+    checkFromText_LexerError("foo 0 0 0 0 NOERROR LEN FAKE");
+    // Other len and data mismatch
+    checkFromText_InvalidText("foo 0 0 0 0 NOERROR 9 FAKE");
+}
+
+void
+fromWireCommonChecks(const TSIG& tsig) {
+    EXPECT_EQ(Name("hmac-sha256"), tsig.getAlgorithm());
+    EXPECT_EQ(1286978795, tsig.getTimeSigned());
+    EXPECT_EQ(300, tsig.getFudge());
+
+    vector<uint8_t> expect_mac(32, 'x');
+    matchWireData(&expect_mac[0], expect_mac.size(),
+                  tsig.getMAC(), tsig.getMACSize());
+
+    EXPECT_EQ(2845, tsig.getOriginalID());
+
+    EXPECT_EQ(0, tsig.getOtherLen());
+    EXPECT_EQ(static_cast<const void*>(NULL), tsig.getOtherData());
+}
+
+TEST_F(Rdata_TSIG_Test, createFromWire) {
+    RdataPtr rdata(rdataFactoryFromFile(RRType::TSIG(), RRClass::ANY(),
+                                        "rdata_tsig_fromWire1.wire"));
+    fromWireCommonChecks(dynamic_cast<TSIG&>(*rdata));
+}
+
+TEST_F(Rdata_TSIG_Test, createFromWireWithOtherData) {
+    RdataPtr rdata(rdataFactoryFromFile(RRType::TSIG(), RRClass::ANY(),
+                                        "rdata_tsig_fromWire2.wire"));
+    const TSIG& tsig(dynamic_cast<TSIG&>(*rdata));
+
+    EXPECT_EQ(18, tsig.getError());
+    const uint64_t otherdata = 1286978795 + 300 + 1; // time-signed + fudge + 1
+    expect_data.resize(6);
+    expect_data[0] = (otherdata >> 40);
+    expect_data[1] = ((otherdata >> 32) & 0xff);
+    expect_data[2] = ((otherdata >> 24) & 0xff);
+    expect_data[3] = ((otherdata >> 16) & 0xff);
+    expect_data[4] = ((otherdata >> 8) & 0xff);
+    expect_data[5] = (otherdata & 0xff);
+    matchWireData(&expect_data[0], expect_data.size(),
+                  tsig.getOtherData(), tsig.getOtherLen());
+}
+
+TEST_F(Rdata_TSIG_Test, createFromWireWithoutMAC) {
+    RdataPtr rdata(rdataFactoryFromFile(RRType::TSIG(), RRClass::ANY(),
+                                        "rdata_tsig_fromWire3.wire"));
+    const TSIG& tsig(dynamic_cast<TSIG&>(*rdata));
+    EXPECT_EQ(16, tsig.getError());
+    EXPECT_EQ(0, tsig.getMACSize());
+    EXPECT_EQ(static_cast<const void*>(NULL), tsig.getMAC());
+}
+
+TEST_F(Rdata_TSIG_Test, createFromWireWithCompression) {
+    RdataPtr rdata(rdataFactoryFromFile(RRType::TSIG(), RRClass::ANY(),
+                                        "rdata_tsig_fromWire4.wire",
+                                        // we need to skip the dummy name:
+                                        Name("hmac-sha256").getLength()));
+    fromWireCommonChecks(dynamic_cast<TSIG&>(*rdata));
+}
+
+TEST_F(Rdata_TSIG_Test, badFromWire) {
+    // RDLENGTH is too short:
+    EXPECT_THROW(rdataFactoryFromFile(RRType::TSIG(), RRClass::ANY(),
+                                      "rdata_tsig_fromWire5.wire"),
+                 InvalidRdataLength);
+    // RDLENGTH is too long:
+    EXPECT_THROW(rdataFactoryFromFile(RRType::TSIG(), RRClass::ANY(),
+                                      "rdata_tsig_fromWire6.wire"),
+                 InvalidRdataLength);
+    // Algorithm name is broken:
+    EXPECT_THROW(rdataFactoryFromFile(RRType::TSIG(), RRClass::ANY(),
+                                      "rdata_tsig_fromWire7.wire"),
+                 DNSMessageFORMERR);
+    // MAC size is bogus:
+    EXPECT_THROW(rdataFactoryFromFile(RRType::TSIG(), RRClass::ANY(),
+                                      "rdata_tsig_fromWire8.wire"),
+                 InvalidBufferPosition);
+    // Other-data length is bogus:
+    EXPECT_THROW(rdataFactoryFromFile(RRType::TSIG(), RRClass::ANY(),
+                                      "rdata_tsig_fromWire9.wire"),
+                 InvalidBufferPosition);
+}
+
+TEST_F(Rdata_TSIG_Test, copyConstruct) {
+    const TSIG copy(rdata_tsig);
+    EXPECT_EQ(0, copy.compare(rdata_tsig));
+
+    // Check the copied data is valid even after the original is deleted
+    TSIG* copy2 = new TSIG(rdata_tsig);
+    TSIG copy3(*copy2);
+    delete copy2;
+    EXPECT_EQ(0, copy3.compare(rdata_tsig));
+}
+
+TEST_F(Rdata_TSIG_Test, createFromParams) {
+    EXPECT_EQ(0, rdata_tsig.compare(TSIG(Name("hmac-md5.sig-alg.reg.int"),
+                                         1286779327, 300, 0, NULL, 16020, 17, 0, NULL)));
+
+    const uint8_t fake_data[] = { 0x14, 0x02, 0x84, 0x14, 0x02, 0x84,
+                                  0x14, 0x02, 0x84, 0x14, 0x02, 0x84 };
+    EXPECT_EQ(0, TSIG(valid_text2).compare(TSIG(Name("hmac-sha256"), 1286779327, 300, 12,
+                                                fake_data, 16020, 16, 0, NULL)));
+
+    const uint8_t fake_data2[] = { 0x14, 0x02, 0x84, 0x14, 0x02, 0x84 };
+    EXPECT_EQ(0, TSIG(valid_text3).compare(TSIG(Name("hmac-sha1"), 1286779327, 300, 12,
+                                                fake_data, 16020, 18, 6, fake_data2)));
+
+    EXPECT_THROW(TSIG(Name("hmac-sha256"), 1ULL << 48, 300, 12, fake_data, 16020, 18, 6, fake_data2),
+                 isc::OutOfRange);
+    EXPECT_THROW(TSIG(Name("hmac-sha256"), 0, 300, 0, fake_data, 16020, 18, 0, NULL),
+                 isc::InvalidParameter);
+    EXPECT_THROW(TSIG(Name("hmac-sha256"), 0, 300, 12, NULL, 16020, 18, 0, NULL),
+                 isc::InvalidParameter);
+    EXPECT_THROW(TSIG(Name("hmac-sha256"), 0, 300, 0, NULL, 16020, 18, 0, fake_data),
+                 isc::InvalidParameter);
+    EXPECT_THROW(TSIG(Name("hmac-sha256"), 0, 300, 0, NULL, 16020, 18, 6, NULL),
+                 isc::InvalidParameter);
+}
+
+TEST_F(Rdata_TSIG_Test, assignment) {
+    TSIG copy(valid_text2);
+    copy = rdata_tsig;
+    EXPECT_EQ(0, copy.compare(rdata_tsig));
+
+    // Check if the copied data is valid even after the original is deleted
+    TSIG* copy2 = new TSIG(rdata_tsig);
+    TSIG copy3(valid_text2);
+    copy3 = *copy2;
+    delete copy2;
+    EXPECT_EQ(0, copy3.compare(rdata_tsig));
+
+    // Self assignment
+    copy = *&copy;
+    EXPECT_EQ(0, copy.compare(rdata_tsig));
+}
+
+template <typename Output>
+void
+Rdata_TSIG_Test::toWireCommonChecks(Output& output) const {
+    vector<uint8_t> expect_data;
+
+    output.clear();
+    expect_data.clear();
+    rdata_tsig.toWire(output);
+    // read the expected wire format data and trim the RDLEN part.
+    UnitTestUtil::readWireData("rdata_tsig_toWire1.wire", expect_data);
+    expect_data.erase(expect_data.begin(), expect_data.begin() + 2);
+    matchWireData(&expect_data[0], expect_data.size(),
+                  output.getData(), output.getLength());
+
+    expect_data.clear();
+    output.clear();
+    TSIG(valid_text2).toWire(output);
+    UnitTestUtil::readWireData("rdata_tsig_toWire2.wire", expect_data);
+    expect_data.erase(expect_data.begin(), expect_data.begin() + 2);
+    matchWireData(&expect_data[0], expect_data.size(),
+                  output.getData(), output.getLength());
+
+    expect_data.clear();
+    output.clear();
+    TSIG(valid_text3).toWire(output);
+    UnitTestUtil::readWireData("rdata_tsig_toWire3.wire", expect_data);
+    expect_data.erase(expect_data.begin(), expect_data.begin() + 2);
+    matchWireData(&expect_data[0], expect_data.size(),
+                  output.getData(), output.getLength());
+}
+
+TEST_F(Rdata_TSIG_Test, toWireBuffer) {
+    toWireCommonChecks<OutputBuffer>(obuffer);
+}
+
+TEST_F(Rdata_TSIG_Test, toWireRenderer) {
+    toWireCommonChecks<MessageRenderer>(renderer);
+
+    // check algorithm name won't compressed when it would otherwise.
+    expect_data.clear();
+    renderer.clear();
+    renderer.writeName(Name("hmac-md5.sig-alg.reg.int"));
+    renderer.writeUint16(42); // RDLEN
+    rdata_tsig.toWire(renderer);
+    UnitTestUtil::readWireData("rdata_tsig_toWire4.wire", expect_data);
+    matchWireData(&expect_data[0], expect_data.size(),
+                  renderer.getData(), renderer.getLength());
+
+    // check algorithm can be used as a compression target.
+    expect_data.clear();
+    renderer.clear();
+    renderer.writeUint16(42);
+    rdata_tsig.toWire(renderer);
+    renderer.writeName(Name("hmac-md5.sig-alg.reg.int"));
+    UnitTestUtil::readWireData("rdata_tsig_toWire5.wire", expect_data);
+    matchWireData(&expect_data[0], expect_data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_TSIG_Test, toText) {
+    EXPECT_EQ(valid_text1, rdata_tsig.toText());
+    EXPECT_EQ(valid_text2, TSIG(valid_text2).toText());
+    EXPECT_EQ(valid_text3, TSIG(valid_text3).toText());
+    EXPECT_EQ(valid_text5, TSIG(valid_text5).toText());
+}
+
+TEST_F(Rdata_TSIG_Test, compare) {
+    // test RDATAs, sorted in the ascending order.
+    // "AAAA" encoded in BASE64 corresponds to 0x000000, so it should be the
+    // smallest data of the same length.
+    vector<TSIG> compare_set;
+    compare_set.push_back(TSIG("a.example 0 300 0 16020 0 0"));
+    compare_set.push_back(TSIG("example 0 300 0 16020 0 0"));
+    compare_set.push_back(TSIG("example 1 300 0 16020 0 0"));
+    compare_set.push_back(TSIG("example 1 600 0 16020 0 0"));
+    compare_set.push_back(TSIG("example 1 600 3 AAAA 16020 0 0"));
+    compare_set.push_back(TSIG("example 1 600 3 FAKE 16020 0 0"));
+    compare_set.push_back(TSIG("example 1 600 3 FAKE 16021 0 0"));
+    compare_set.push_back(TSIG("example 1 600 3 FAKE 16021 1 0"));
+    compare_set.push_back(TSIG("example 1 600 3 FAKE 16021 1 3 AAAA"));
+    compare_set.push_back(TSIG("example 1 600 3 FAKE 16021 1 3 FAKE"));
+
+    EXPECT_EQ(0, compare_set[0].compare(TSIG("A.EXAMPLE 0 300 0 16020 0 0")));
+
+    vector<TSIG>::const_iterator it;
+    vector<TSIG>::const_iterator it_end = compare_set.end();
+    for (it = compare_set.begin(); it != it_end - 1; ++it) {
+        EXPECT_GT(0, (*it).compare(*(it + 1)));
+        EXPECT_LT(0, (*(it + 1)).compare(*it));
+    }
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(rdata_tsig.compare(*RdataTest::rdata_nomatch), bad_cast);
+}
+}
diff --git a/src/lib/dns/tests/rdata_txt_like_unittest.cc b/src/lib/dns/tests/rdata_txt_like_unittest.cc
new file mode 100644
index 0000000..e2828c2
--- /dev/null
+++ b/src/lib/dns/tests/rdata_txt_like_unittest.cc
@@ -0,0 +1,397 @@
+// Copyright (C) 2011-2020 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+// This is the common code for TXT and SPF tests.
+
+#include <config.h>
+
+#include <util/buffer.h>
+#include <dns/exceptions.h>
+#include <dns/rdataclass.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+
+#include <util/unittests/wiredata.h>
+
+#include <gtest/gtest.h>
+
+#include <string>
+#include <sstream>
+#include <vector>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+
+template<class T>
+class RRTYPE : public RRType {
+public:
+    RRTYPE();
+};
+
+template<> RRTYPE<generic::TXT>::RRTYPE() : RRType(RRType::TXT()) {}
+template<> RRTYPE<generic::SPF>::RRTYPE() : RRType(RRType::SPF()) {}
+
+const uint8_t wiredata_txt_like[] = {
+    sizeof("Test-String") - 1,
+    'T', 'e', 's', 't', '-', 'S', 't', 'r', 'i', 'n', 'g'
+};
+
+const uint8_t wiredata_nulltxt[] = { 0 };
+
+template<class TXT_LIKE>
+class Rdata_TXT_LIKE_Test : public RdataTest {
+protected:
+    Rdata_TXT_LIKE_Test() :
+        wiredata_longesttxt(256, 'a'),
+        rdata_txt_like("Test-String"),
+        rdata_txt_like_empty("\"\""),
+        rdata_txt_like_quoted("\"Test-String\"")
+    {
+        wiredata_longesttxt[0] = 255; // adjust length
+    }
+
+protected:
+    vector<uint8_t> wiredata_longesttxt;
+    const TXT_LIKE rdata_txt_like;
+    const TXT_LIKE rdata_txt_like_empty;
+    const TXT_LIKE rdata_txt_like_quoted;
+};
+
+// The list of types we want to test.
+typedef testing::Types<generic::TXT, generic::SPF> Implementations;
+
+#ifdef TYPED_TEST_SUITE
+TYPED_TEST_SUITE(Rdata_TXT_LIKE_Test, Implementations);
+#else
+TYPED_TEST_CASE(Rdata_TXT_LIKE_Test, Implementations);
+#endif
+
+TYPED_TEST(Rdata_TXT_LIKE_Test, createFromText) {
+    // Below we check the behavior for the "from text" constructors, both
+    // from std::string and with MasterLexer.  The underlying implementation
+    // is the same, so both should work exactly same, but we confirm both
+    // cases.
+
+    const std::string multi_line = "(\n \"Test-String\" )";
+    const std::string escaped_txt = "Test\\045Strin\\g";
+
+    // test input for the lexer version
+    std::stringstream ss;
+    ss << "Test-String\n";
+    ss << "\"Test-String\"\n";   // explicitly surrounded by '"'s
+    ss << multi_line << "\n";   // multi-line text with ()
+    ss << escaped_txt << "\n";   // using the two types of escape with '\'
+    ss << "\"\"\n";              // empty string (note: still valid char-str)
+    ss << string(255, 'a') << "\n"; // Longest possible character-string.
+    ss << string(256, 'a') << "\n"; // char-string too long
+    ss << "\"Test-String\\\"\n";    // unbalanced quote
+    ss << "\"Test-String\\\"\"\n";
+    this->lexer.pushSource(ss);
+
+    // commonly used Rdata to compare below, created from wire
+    ConstRdataPtr const rdata =
+        this->rdataFactoryFromFile(RRTYPE<TypeParam>(),
+                                   RRClass("IN"), "rdata_txt_fromWire1");
+
+    // normal case is covered in toWireBuffer.  First check the std::string
+    // case, then with MasterLexer.  For the latter, we need to read and skip
+    // '\n'.  These apply to most of the other cases below.
+    EXPECT_EQ(0, this->rdata_txt_like.compare(*rdata));
+    EXPECT_EQ(0, TypeParam(this->lexer, NULL, MasterLoader::MANY_ERRORS,
+                           this->loader_cb).compare(*rdata));
+    EXPECT_EQ(MasterToken::END_OF_LINE, this->lexer.getNextToken().getType());
+
+    // surrounding double-quotes shouldn't change the result.
+    EXPECT_EQ(0, this->rdata_txt_like_quoted.compare(*rdata));
+    EXPECT_EQ(0, TypeParam(this->lexer, NULL, MasterLoader::MANY_ERRORS,
+                           this->loader_cb).compare(*rdata));
+    EXPECT_EQ(MasterToken::END_OF_LINE, this->lexer.getNextToken().getType());
+
+    // multi-line input with ()
+    EXPECT_EQ(0, TypeParam(multi_line).compare(*rdata));
+    EXPECT_EQ(0, TypeParam(this->lexer, NULL, MasterLoader::MANY_ERRORS,
+                           this->loader_cb).compare(*rdata));
+    EXPECT_EQ(MasterToken::END_OF_LINE, this->lexer.getNextToken().getType());
+
+    // for the same data using escape
+    EXPECT_EQ(0, TypeParam(escaped_txt).compare(*rdata));
+    EXPECT_EQ(0, TypeParam(this->lexer, NULL, MasterLoader::MANY_ERRORS,
+                           this->loader_cb).compare(*rdata));
+    EXPECT_EQ(MasterToken::END_OF_LINE, this->lexer.getNextToken().getType());
+
+    // Null character-string.
+    this->obuffer.clear();
+    TypeParam(string("\"\"")).toWire(this->obuffer);
+    matchWireData(wiredata_nulltxt, sizeof(wiredata_nulltxt),
+                  this->obuffer.getData(), this->obuffer.getLength());
+
+    this->obuffer.clear();
+    TypeParam(this->lexer, NULL, MasterLoader::MANY_ERRORS, this->loader_cb).
+        toWire(this->obuffer);
+    matchWireData(wiredata_nulltxt, sizeof(wiredata_nulltxt),
+                  this->obuffer.getData(), this->obuffer.getLength());
+
+    EXPECT_EQ(MasterToken::END_OF_LINE, this->lexer.getNextToken().getType());
+
+    // Longest possible character-string.
+    this->obuffer.clear();
+    TypeParam(string(255, 'a')).toWire(this->obuffer);
+    matchWireData(&this->wiredata_longesttxt[0],
+                  this->wiredata_longesttxt.size(),
+                  this->obuffer.getData(), this->obuffer.getLength());
+
+    this->obuffer.clear();
+    TypeParam(this->lexer, NULL, MasterLoader::MANY_ERRORS, this->loader_cb).
+        toWire(this->obuffer);
+    matchWireData(&this->wiredata_longesttxt[0],
+                  this->wiredata_longesttxt.size(),
+                  this->obuffer.getData(), this->obuffer.getLength());
+
+    EXPECT_EQ(MasterToken::END_OF_LINE, this->lexer.getNextToken().getType());
+
+    // Too long text for a valid character-string.
+    EXPECT_THROW(TypeParam(string(256, 'a')), CharStringTooLong);
+    EXPECT_THROW(TypeParam(this->lexer, NULL, MasterLoader::MANY_ERRORS,
+                           this->loader_cb), CharStringTooLong);
+    EXPECT_EQ(MasterToken::END_OF_LINE, this->lexer.getNextToken().getType());
+
+    // The escape character makes the double quote a part of character-string,
+    // so this is invalid input and should be rejected.
+    EXPECT_THROW(TypeParam("\"Test-String\\\""), InvalidRdataText);
+    EXPECT_THROW(TypeParam(this->lexer, NULL, MasterLoader::MANY_ERRORS,
+                           this->loader_cb), MasterLexer::LexerError);
+    EXPECT_EQ(MasterToken::END_OF_LINE, this->lexer.getNextToken().getType());
+}
+
+TYPED_TEST(Rdata_TXT_LIKE_Test, createMultiStringsFromText) {
+    // Tests for "from text" variants construction with various forms of
+    // multi character-strings.
+
+    std::vector<std::string > texts;
+    texts.push_back("\"Test-String\" \"Test-String\""); // most common form
+    texts.push_back("\"Test-String\"\"Test-String\"");  // no space between'em
+    texts.push_back("\"Test-String\" Test-String");  // no '"' for one
+    texts.push_back("\"Test-String\"Test-String"); // and no space either
+    texts.push_back("Test-String \"Test-String\""); // no '"' for the other
+    texts.push_back("Test-String\"Test-String\""); // and no space either
+
+    std::stringstream ss;
+    for (std::vector<std::string >::const_iterator it = texts.begin();
+         it != texts.end(); ++it) {
+        ss << *it << "\n";
+    }
+    this->lexer.pushSource(ss);
+
+    // The corresponding Rdata built from wire to compare in the checks below.
+    ConstRdataPtr const rdata =
+        this->rdataFactoryFromFile(RRTYPE<TypeParam>(),
+                                   RRClass("IN"), "rdata_txt_fromWire3.wire");
+
+    // Confirm we can construct the Rdata from the test text, both from
+    // std::string and with lexer, and that matches the from-wire data.
+    for (std::vector<std::string >::const_iterator it = texts.begin();
+         it != texts.end(); ++it) {
+        SCOPED_TRACE(*it);
+        EXPECT_EQ(0, TypeParam(*it).compare(*rdata));
+
+        EXPECT_EQ(0, TypeParam(this->lexer, NULL, MasterLoader::MANY_ERRORS,
+                               this->loader_cb).compare(*rdata));
+        EXPECT_EQ(MasterToken::END_OF_LINE,
+                  this->lexer.getNextToken().getType());
+    }
+}
+
+TYPED_TEST(Rdata_TXT_LIKE_Test, createFromTextExtra) {
+    // This is for the std::string version only: the input must end with EOF;
+    // an extra new-line will result in an exception.
+    EXPECT_THROW(TypeParam("\"Test-String\"\n"), InvalidRdataText);
+    // Same if there's a space before '\n'
+    EXPECT_THROW(TypeParam("\"Test-String\" \n"), InvalidRdataText);
+}
+
+TYPED_TEST(Rdata_TXT_LIKE_Test, fromTextEmpty) {
+    // If the input text doesn't contain any character-string, it should be
+    // rejected
+    EXPECT_THROW(TypeParam(""), InvalidRdataText);
+    EXPECT_THROW(TypeParam(" "), InvalidRdataText); // even with a space
+    EXPECT_THROW(TypeParam("(\n)"), InvalidRdataText); // or multi-line with ()
+}
+
+void
+makeLargest(vector<uint8_t>& data) {
+    uint8_t ch = 0;
+
+    // create 255 sets of character-strings, each of which has the longest
+    // length (255bytes string + 1-byte length field)
+    for (int i = 0; i < 255; ++i, ++ch) {
+        data.push_back(255);
+        data.insert(data.end(), 255, ch);
+    }
+    // the last character-string should be 255 bytes (including the one-byte
+    // length field) in length so that the total length should be in the range
+    // of 16-bit integers.
+    data.push_back(254);
+    data.insert(data.end(), 254, ch);
+
+    assert(data.size() == 65535);
+}
+
+TYPED_TEST(Rdata_TXT_LIKE_Test, createFromWire) {
+    EXPECT_EQ(0, this->rdata_txt_like.compare(
+                  *this->rdataFactoryFromFile(RRTYPE<TypeParam>(),
+                                              RRClass("IN"),
+                                              "rdata_txt_fromWire1")));
+
+    // Empty character string
+    EXPECT_EQ(0, this->rdata_txt_like_empty.compare(
+                  *this->rdataFactoryFromFile(RRTYPE<TypeParam>(),
+                                              RRClass("IN"),
+                                              "rdata_txt_fromWire2.wire")));
+
+    // Multiple character strings
+    this->obuffer.clear();
+    this->rdataFactoryFromFile(RRTYPE<TypeParam>(), RRClass("IN"),
+                         "rdata_txt_fromWire3.wire")->toWire(this->obuffer);
+    // the result should be 'wiredata_txt' repeated twice
+    vector<uint8_t> expected_data(wiredata_txt_like, wiredata_txt_like +
+                                  sizeof(wiredata_txt_like));
+    expected_data.insert(expected_data.end(), wiredata_txt_like,
+                         wiredata_txt_like + sizeof(wiredata_txt_like));
+    matchWireData(&expected_data[0], expected_data.size(),
+                  this->obuffer.getData(), this->obuffer.getLength());
+
+    // Largest length of data.  There's nothing special, but should be
+    // constructed safely, and the content should be identical to the original
+    // data.
+    vector<uint8_t> largest_txt_like_data;
+    makeLargest(largest_txt_like_data);
+    InputBuffer ibuffer(&largest_txt_like_data[0],
+                        largest_txt_like_data.size());
+    TypeParam largest_txt_like(ibuffer, largest_txt_like_data.size());
+    this->obuffer.clear();
+    largest_txt_like.toWire(this->obuffer);
+    matchWireData(&largest_txt_like_data[0], largest_txt_like_data.size(),
+                  this->obuffer.getData(), this->obuffer.getLength());
+
+    // rdlen parameter is out of range.  This is a rare event because we'd
+    // normally call the constructor via a polymorphic wrapper, where the
+    // length is validated.  But this should be checked explicitly.
+    InputBuffer ibuffer2(&largest_txt_like_data[0],
+                         largest_txt_like_data.size());
+    EXPECT_THROW(TypeParam(ibuffer2, 65536), InvalidRdataLength);
+
+    // RDATA is empty, which is invalid for TXT_LIKE.
+    EXPECT_THROW(this->rdataFactoryFromFile(RRTYPE<TypeParam>(), RRClass("IN"),
+                                      "rdata_txt_fromWire4.wire"),
+                 DNSMessageFORMERR);
+
+    // character-string length is too large, which could cause overrun.
+    EXPECT_THROW(this->rdataFactoryFromFile(RRTYPE<TypeParam>(), RRClass("IN"),
+                                      "rdata_txt_fromWire5.wire"),
+                 DNSMessageFORMERR);
+}
+
+TYPED_TEST(Rdata_TXT_LIKE_Test, createFromLexer) {
+    EXPECT_EQ(0, this->rdata_txt_like.compare(
+        *test::createRdataUsingLexer(RRTYPE<TypeParam>(), RRClass::IN(),
+                                     "Test-String")));
+}
+
+TYPED_TEST(Rdata_TXT_LIKE_Test, toWireBuffer) {
+    this->rdata_txt_like.toWire(this->obuffer);
+    matchWireData(wiredata_txt_like, sizeof(wiredata_txt_like),
+                  this->obuffer.getData(), this->obuffer.getLength());
+}
+
+TYPED_TEST(Rdata_TXT_LIKE_Test, toWireRenderer) {
+    this->rdata_txt_like.toWire(this->renderer);
+    matchWireData(wiredata_txt_like, sizeof(wiredata_txt_like),
+                  this->renderer.getData(), this->renderer.getLength());
+}
+
+TYPED_TEST(Rdata_TXT_LIKE_Test, toText) {
+    EXPECT_EQ("\"Test-String\"", this->rdata_txt_like.toText());
+    EXPECT_EQ("\"\"", this->rdata_txt_like_empty.toText());
+    EXPECT_EQ("\"Test-String\"", this->rdata_txt_like_quoted.toText());
+
+    // Check escape behavior
+    const TypeParam double_quotes("Test-String\"Test-String\"");
+    EXPECT_EQ("\"Test-String\" \"Test-String\"", double_quotes.toText());
+    const TypeParam semicolon("Test-String\\;Test-String");
+    EXPECT_EQ("\"Test-String\\;Test-String\"", semicolon.toText());
+    const TypeParam backslash("Test-String\\\\Test-String");
+    EXPECT_EQ("\"Test-String\\\\Test-String\"", backslash.toText());
+    const TypeParam before_x20("Test-String\\031Test-String");
+    EXPECT_EQ("\"Test-String\\031Test-String\"", before_x20.toText());
+    const TypeParam from_x20_to_x7e("\"Test-String ~ Test-String\"");
+    EXPECT_EQ("\"Test-String ~ Test-String\"", from_x20_to_x7e.toText());
+    const TypeParam from_x20_to_x7e_2("Test-String\\032\\126\\032Test-String");
+    EXPECT_EQ("\"Test-String ~ Test-String\"", from_x20_to_x7e_2.toText());
+    const TypeParam after_x7e("Test-String\\127Test-String");
+    EXPECT_EQ("\"Test-String\\127Test-String\"", after_x7e.toText());
+}
+
+TYPED_TEST(Rdata_TXT_LIKE_Test, assignment) {
+    TypeParam rdata1("assignment1");
+    TypeParam rdata2("assignment2");
+    rdata1 = rdata2;
+    EXPECT_EQ(0, rdata2.compare(rdata1));
+
+    // Check if the copied data is valid even after the original is deleted
+    TypeParam* rdata3 = new TypeParam(rdata1);
+    TypeParam rdata4("assignment3");
+    rdata4 = *rdata3;
+    delete rdata3;
+    EXPECT_EQ(0, rdata4.compare(rdata1));
+
+    // Self assignment
+    rdata2 = *&rdata2;
+    EXPECT_EQ(0, rdata2.compare(rdata1));
+}
+
+TYPED_TEST(Rdata_TXT_LIKE_Test, compare) {
+    string const txt1("aaaaaaaa");
+    string const txt2("aaaaaaaaaa");
+    string const txt3("bbbbbbbb");
+    string const txt4(129, 'a');
+    string const txt5(128, 'b');
+
+    EXPECT_EQ(TypeParam(txt1).compare(TypeParam(txt1)), 0);
+
+    EXPECT_LT(TypeParam("\"\"").compare(TypeParam(txt1)), 0);
+    EXPECT_GT(TypeParam(txt1).compare(TypeParam("\"\"")), 0);
+
+    EXPECT_LT(TypeParam(txt1).compare(TypeParam(txt2)), 0);
+    EXPECT_GT(TypeParam(txt2).compare(TypeParam(txt1)), 0);
+
+    EXPECT_LT(TypeParam(txt1).compare(TypeParam(txt3)), 0);
+    EXPECT_GT(TypeParam(txt3).compare(TypeParam(txt1)), 0);
+
+    // we're comparing the data raw, starting at the length octet, so a shorter
+    // string sorts before a longer one no matter the lexicopraphical order
+    EXPECT_LT(TypeParam(txt3).compare(TypeParam(txt2)), 0);
+    EXPECT_GT(TypeParam(txt2).compare(TypeParam(txt3)), 0);
+
+    // to make sure the length octet compares unsigned
+    EXPECT_LT(TypeParam(txt1).compare(TypeParam(txt4)), 0);
+    EXPECT_GT(TypeParam(txt4).compare(TypeParam(txt1)), 0);
+
+    EXPECT_LT(TypeParam(txt5).compare(TypeParam(txt4)), 0);
+    EXPECT_GT(TypeParam(txt4).compare(TypeParam(txt5)), 0);
+
+    // comparison attempt between incompatible RR types should be rejected
+    EXPECT_THROW(TypeParam(txt1).compare(*this->rdata_nomatch),
+                 bad_cast);
+}
+
+}
diff --git a/src/lib/dns/tests/rdata_unittest.cc b/src/lib/dns/tests/rdata_unittest.cc
new file mode 100644
index 0000000..afc16a1
--- /dev/null
+++ b/src/lib/dns/tests/rdata_unittest.cc
@@ -0,0 +1,467 @@
+// Copyright (C) 2010-2023 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <functional>
+#include <iomanip>
+#include <vector>
+#include <string>
+#include <sstream>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/tests/unittest_util.h>
+#include <dns/tests/rdata_unittest.h>
+
+#include <util/unittests/wiredata.h>
+
+#include <boost/lexical_cast.hpp>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+namespace ph = std::placeholders;
+
+namespace isc {
+namespace dns {
+namespace rdata {
+RdataTest::RdataTest() :
+    obuffer(0), rdata_nomatch(createRdata(RRType(0), RRClass(1), "\\# 0")),
+    loader_cb(MasterLoaderCallbacks::getNullCallbacks())
+{}
+
+RdataPtr
+RdataTest::rdataFactoryFromFile(const RRType& rrtype, const RRClass& rrclass,
+                                const char* datafile, size_t position)
+{
+    std::vector<unsigned char> data;
+    UnitTestUtil::readWireData(datafile, data);
+
+    InputBuffer buffer(&data[0], data.size());
+    buffer.setPosition(position);
+
+    uint16_t rdlen = buffer.readUint16();
+    return (createRdata(rrtype, rrclass, buffer, rdlen));
+}
+
+namespace test {
+
+RdataPtr
+createRdataUsingLexer(const RRType& rrtype, const RRClass& rrclass,
+                      const std::string& str)
+{
+    std::stringstream ss(str);
+    MasterLexer lexer;
+    lexer.pushSource(ss);
+
+    MasterLoaderCallbacks callbacks =
+        MasterLoaderCallbacks::getNullCallbacks();
+    const Name origin("example.org.");
+
+    return (createRdata(rrtype, rrclass, lexer, &origin,
+                        MasterLoader::MANY_ERRORS, callbacks));
+}
+
+} // end of namespace isc::dns::rdata::test
+
+// A mock class to check parameters passed via loader callbacks.  Its callback
+// records the passed parameters, allowing the test to check them later via
+// the check() method.
+class CreateRdataCallback {
+public:
+    enum CallbackType { NONE, ERROR, WARN };
+    CreateRdataCallback() : type_(NONE), line_(0) {}
+    void callback(CallbackType type, const string& source, size_t line,
+                  const string& reason_txt) {
+        type_ = type;
+        source_ = source;
+        line_ = line;
+        reason_txt_ = reason_txt;
+    }
+
+    void clear() {
+        type_ = NONE;
+        source_.clear();
+        line_ = 0;
+        reason_txt_.clear();
+    }
+
+    // Return if callback is called since the previous call to clear().
+    bool isCalled() const { return (type_ != NONE); }
+
+    void check(const string& expected_srcname, size_t expected_line,
+               CallbackType expected_type, const string& expected_reason)
+        const
+    {
+        EXPECT_EQ(expected_srcname, source_);
+        EXPECT_EQ(expected_line, line_);
+        EXPECT_EQ(expected_type, type_);
+        EXPECT_EQ(expected_reason, reason_txt_);
+    }
+
+private:
+    CallbackType type_;
+    string source_;
+    size_t line_;
+    string reason_txt_;
+};
+
+// Test class/type-independent behavior of createRdata().
+TEST_F(RdataTest, createRdataWithLexer) {
+    const in::AAAA aaaa_rdata("2001:db8::1");
+
+    stringstream ss;
+    const string src_name = "stream-" + boost::lexical_cast<string>(&ss);
+    ss << aaaa_rdata.toText() << "\n"; // valid case
+    ss << aaaa_rdata.toText() << "; comment, should be ignored\n";
+    ss << aaaa_rdata.toText() << " extra-token\n"; // extra token
+    ss << aaaa_rdata.toText() << " extra token\n"; // 2 extra tokens
+    ss << ")\n"; // causing lexer error in parsing the RDATA text
+    ss << "192.0.2.1\n"; // semantics error: IPv4 address is given for AAAA
+    ss << aaaa_rdata.toText();  // valid, but end with EOF, not EOL
+    lexer.pushSource(ss);
+
+    CreateRdataCallback callback;
+    MasterLoaderCallbacks callbacks(
+        std::bind(&CreateRdataCallback::callback, &callback,
+                  CreateRdataCallback::ERROR, ph::_1, ph::_2, ph::_3),
+        std::bind(&CreateRdataCallback::callback, &callback,
+                  CreateRdataCallback::WARN,  ph::_1, ph::_2, ph::_3));
+
+    size_t line = 0;
+
+    // Valid case.
+    ++line;
+    ConstRdataPtr rdata = createRdata(RRType::AAAA(), RRClass::IN(), lexer,
+                                      NULL, MasterLoader::MANY_ERRORS,
+                                      callbacks);
+    EXPECT_EQ(0, aaaa_rdata.compare(*rdata));
+    EXPECT_FALSE(callback.isCalled());
+
+    // Similar to the previous case, but RDATA is followed by a comment.
+    // It should cause any confusion.
+    ++line;
+    callback.clear();
+    rdata = createRdata(RRType::AAAA(), RRClass::IN(), lexer, NULL,
+                        MasterLoader::MANY_ERRORS, callbacks);
+    EXPECT_EQ(0, aaaa_rdata.compare(*rdata));
+    EXPECT_FALSE(callback.isCalled());
+
+    // Broken RDATA text: extra token.  createRdata() returns NULL, error
+    // callback is called.
+    ++line;
+    callback.clear();
+    EXPECT_FALSE(createRdata(RRType::AAAA(), RRClass::IN(), lexer, NULL,
+                             MasterLoader::MANY_ERRORS, callbacks));
+    callback.check(src_name, line, CreateRdataCallback::ERROR,
+                   "createRdata from text failed near 'extra-token': "
+                   "extra input text");
+
+    // Similar to the previous case, but only the first extra token triggers
+    // callback.
+    ++line;
+    callback.clear();
+    EXPECT_FALSE(createRdata(RRType::AAAA(), RRClass::IN(), lexer, NULL,
+                             MasterLoader::MANY_ERRORS, callbacks));
+    callback.check(src_name, line, CreateRdataCallback::ERROR,
+                   "createRdata from text failed near 'extra': "
+                   "extra input text");
+
+    // Lexer error will happen, corresponding error callback will be triggered.
+    ++line;
+    callback.clear();
+    EXPECT_FALSE(createRdata(RRType::AAAA(), RRClass::IN(), lexer, NULL,
+                             MasterLoader::MANY_ERRORS, callbacks));
+    callback.check(src_name, line, CreateRdataCallback::ERROR,
+                   "createRdata from text failed: unbalanced parentheses");
+
+    // Semantics level error will happen, corresponding error callback will be
+    // triggered.
+    ++line;
+    callback.clear();
+    EXPECT_FALSE(createRdata(RRType::AAAA(), RRClass::IN(), lexer, NULL,
+                             MasterLoader::MANY_ERRORS, callbacks));
+    callback.check(src_name, line, CreateRdataCallback::ERROR,
+                   "createRdata from text failed: Bad IN/AAAA RDATA text: "
+                   "'192.0.2.1'");
+
+    // Input is valid and parse will succeed, but with a warning that the
+    // file is not ended with a newline.
+    ++line;
+    callback.clear();
+    rdata = createRdata(RRType::AAAA(), RRClass::IN(), lexer, NULL,
+                        MasterLoader::MANY_ERRORS, callbacks);
+    EXPECT_EQ(0, aaaa_rdata.compare(*rdata));
+    callback.check(src_name, line, CreateRdataCallback::WARN,
+                   "file does not end with newline");
+}
+
+TEST_F(RdataTest, getLength) {
+    const in::AAAA aaaa_rdata("2001:db8::1");
+    EXPECT_EQ(16, aaaa_rdata.getLength());
+
+    const generic::TXT txt_rdata("Hello World");
+    EXPECT_EQ(12, txt_rdata.getLength());
+}
+
+}
+}
+}
+
+namespace {
+
+// Wire-format data correspond to rdata_unknown.  Note that it doesn't
+// include RDLENGTH.
+const uint8_t wiredata_unknown[] = { 0xa1, 0xb2, 0xc3, 0x0d };
+
+class Rdata_Unknown_Test : public RdataTest {
+public:
+    Rdata_Unknown_Test() :
+        // "Unknown" RR Type used for the test cases below.  If/when we
+        // use this type number as a "well-known" (probably
+        // experimental) type, we'll need to renumber it.
+        unknown_rrtype(RRType(65000)),
+        rdata_unknowntxt("\\# 4 a1b2c30d"),
+        rdata_unknown(rdata_unknowntxt)
+    {}
+protected:
+    static string getLongestRdataTxt();
+    static void getLongestRdataWire(vector<uint8_t>& v);
+
+    const RRType unknown_rrtype;
+    const std::string rdata_unknowntxt;
+    const generic::Generic rdata_unknown;
+};
+
+string
+Rdata_Unknown_Test::getLongestRdataTxt() {
+    ostringstream oss;
+
+    oss << "\\# " << MAX_RDLENGTH << " ";
+    oss.fill('0');
+    oss << right << hex;
+    for (int i = 0; i < MAX_RDLENGTH; i++) {
+        oss << setw(2) << (i & 0xff);
+    }
+
+    return (oss.str());
+}
+
+void
+Rdata_Unknown_Test::getLongestRdataWire(vector<uint8_t>& v) {
+    unsigned char ch = 0;
+    for (int i = 0; i < MAX_RDLENGTH; ++i, ++ch) {
+        v.push_back(ch);
+    }
+}
+
+TEST_F(Rdata_Unknown_Test, createFromText) {
+    // valid construction.  This also tests a normal case of "FromWire".
+    EXPECT_EQ(0, generic::Generic("\\# 4 a1b2c30d").compare(
+                  *rdataFactoryFromFile(unknown_rrtype, RRClass::IN(),
+                                        "rdata_unknown_fromWire")));
+    // upper case hexadecimal digits should also be okay.
+    EXPECT_EQ(0, generic::Generic("\\# 4 A1B2C30D").compare(
+                  *rdataFactoryFromFile(unknown_rrtype, RRClass::IN(),
+                                        "rdata_unknown_fromWire")));
+    // 0-length RDATA should be accepted
+    EXPECT_EQ(0, generic::Generic("\\# 0").compare(
+                  *rdataFactoryFromFile(unknown_rrtype, RRClass::IN(),
+                                        "rdata_unknown_fromWire", 6)));
+    // hex encoding can be space-separated
+    EXPECT_EQ(0, generic::Generic("\\# 4 a1 b2c30d").compare(rdata_unknown));
+    EXPECT_EQ(0, generic::Generic("\\# 4 a1b2 c30d").compare(rdata_unknown));
+    EXPECT_EQ(0, generic::Generic("\\# 4 a1 b2 c3 0d").compare(rdata_unknown));
+    EXPECT_EQ(0, generic::Generic("\\# 4 a1\tb2c3 0d").compare(rdata_unknown));
+
+    // Max-length RDATA
+    vector<uint8_t> v;
+    getLongestRdataWire(v);
+    InputBuffer ibuffer(&v[0], v.size());
+    EXPECT_EQ(0, generic::Generic(getLongestRdataTxt()).compare(
+                  generic::Generic(ibuffer, v.size())));
+
+    // the length field must match the encoding data length.
+    EXPECT_THROW(generic::Generic("\\# 4 1080c0ff00"), InvalidRdataLength);
+    EXPECT_THROW(generic::Generic("\\# 5 1080c0ff"), InvalidRdataLength);
+    // RDATA encoding part must consist of an even number of hex digits.
+    EXPECT_THROW(generic::Generic("\\# 1 1"), InvalidRdataText);
+    EXPECT_THROW(generic::Generic("\\# 1 ax"), InvalidRdataText);
+    // the length should be 16-bit unsigned integer
+    EXPECT_THROW(generic::Generic("\\# 65536 a1b2c30d"), InvalidRdataLength);
+    EXPECT_THROW(generic::Generic("\\# -1 a1b2c30d"), InvalidRdataLength);
+    EXPECT_THROW(generic::Generic("\\# 1.1 a1"), InvalidRdataLength);
+    EXPECT_THROW(generic::Generic("\\# 0a 00010203040506070809"),
+                 InvalidRdataLength);
+    // should reject if the special token is missing.
+    EXPECT_THROW(generic::Generic("4 a1b2c30d"), InvalidRdataText);
+    // the special token, the RDLENGTH and the data must be space separated.
+    EXPECT_THROW(generic::Generic("\\#0"), InvalidRdataText);
+    EXPECT_THROW(generic::Generic("\\# 1ff"), InvalidRdataLength);
+}
+
+TEST_F(Rdata_Unknown_Test, createFromWire) {
+    // normal case (including 0-length data) is covered in createFromText.
+
+    // buffer too short.  the error should be detected in buffer read
+    EXPECT_THROW(rdataFactoryFromFile(unknown_rrtype, RRClass::IN(),
+                                      "rdata_unknown_fromWire", 8),
+                 InvalidBufferPosition);
+
+    // too large data
+    vector<uint8_t> v;
+    getLongestRdataWire(v);
+    v.push_back(0);             // making it too long
+    InputBuffer ibuffer(&v[0], v.size());
+    EXPECT_THROW(generic::Generic(ibuffer, v.size()), InvalidRdataLength);
+}
+
+// The following 3 sets of tests check the behavior of createRdata() variants
+// with the "unknown" RRtype.  The result should be RRclass independent.
+TEST_F(Rdata_Unknown_Test, createRdataFromString) {
+    EXPECT_EQ(0, rdata_unknown.compare(
+                  *createRdata(unknown_rrtype, RRClass::IN(),
+                               rdata_unknowntxt)));
+    EXPECT_EQ(0, rdata_unknown.compare(
+                  *createRdata(unknown_rrtype, RRClass::CH(),
+                               rdata_unknowntxt)));
+    EXPECT_EQ(0, rdata_unknown.compare(
+                  *createRdata(unknown_rrtype, RRClass("CLASS65000"),
+                               rdata_unknowntxt)));
+}
+
+TEST_F(Rdata_Unknown_Test, createRdataFromWire) {
+    InputBuffer ibuffer(wiredata_unknown, sizeof(wiredata_unknown));
+    EXPECT_EQ(0, rdata_unknown.compare(
+                  *createRdata(unknown_rrtype, RRClass::IN(),
+                               ibuffer, sizeof(wiredata_unknown))));
+
+    InputBuffer ibuffer2(wiredata_unknown, sizeof(wiredata_unknown));
+    EXPECT_EQ(0, rdata_unknown.compare(
+                  *createRdata(unknown_rrtype, RRClass::CH(),
+                               ibuffer2, sizeof(wiredata_unknown))));
+
+    InputBuffer ibuffer3(wiredata_unknown, sizeof(wiredata_unknown));
+    EXPECT_EQ(0, rdata_unknown.compare(
+                  *createRdata(unknown_rrtype, RRClass(65000),
+                               ibuffer3, sizeof(wiredata_unknown))));
+}
+
+TEST_F(Rdata_Unknown_Test, createRdataByCopy) {
+    EXPECT_EQ(0, rdata_unknown.compare(
+                  *createRdata(unknown_rrtype, RRClass::IN(), rdata_unknown)));
+    EXPECT_EQ(0, rdata_unknown.compare(
+                  *createRdata(unknown_rrtype, RRClass::CH(), rdata_unknown)));
+    EXPECT_EQ(0, rdata_unknown.compare(
+                  *createRdata(unknown_rrtype, RRClass(65000),
+                               rdata_unknown)));
+}
+
+TEST_F(Rdata_Unknown_Test, copyConstruct) {
+    generic::Generic copy(rdata_unknown);
+    EXPECT_EQ(0, copy.compare(rdata_unknown));
+
+    // Check the copied data is valid even after the original is deleted
+    generic::Generic* copy2 = new generic::Generic(rdata_unknown);
+    generic::Generic copy3(*copy2);
+    delete copy2;
+    EXPECT_EQ(0, copy3.compare(rdata_unknown));
+}
+
+TEST_F(Rdata_Unknown_Test, assignment) {
+    generic::Generic copy("\\# 1 10");
+    copy = rdata_unknown;
+    EXPECT_EQ(0, copy.compare(rdata_unknown));
+
+    // Check if the copied data is valid even after the original is deleted
+    generic::Generic* copy2 = new generic::Generic(rdata_unknown);
+    generic::Generic copy3("\\# 1 10");
+    copy3 = *copy2;
+    delete copy2;
+    EXPECT_EQ(0, copy3.compare(rdata_unknown));
+
+    // Self assignment
+    copy = *&copy;
+    EXPECT_EQ(0, copy.compare(rdata_unknown));
+}
+
+TEST_F(Rdata_Unknown_Test, toText) {
+    EXPECT_EQ(rdata_unknowntxt, rdata_unknown.toText());
+    EXPECT_EQ(getLongestRdataTxt(),
+              generic::Generic(getLongestRdataTxt()).toText());
+}
+
+TEST_F(Rdata_Unknown_Test, toWireBuffer) {
+    rdata_unknown.toWire(obuffer);
+    matchWireData(wiredata_unknown, sizeof(wiredata_unknown),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(Rdata_Unknown_Test, toWireRenderer) {
+    rdata_unknown.toWire(renderer);
+    matchWireData(wiredata_unknown, sizeof(wiredata_unknown),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(Rdata_Unknown_Test, compare) {
+    // comparison as left-justified unsigned octet sequences:
+    // cppcheck-suppress uselessCallsCompare
+    EXPECT_EQ(0, rdata_unknown.compare(rdata_unknown));
+
+    generic::Generic rdata_unknown_small("\\# 4 00b2c3ff");
+    EXPECT_GT(0, rdata_unknown_small.compare(rdata_unknown));
+    EXPECT_LT(0, rdata_unknown.compare(rdata_unknown_small));
+
+    generic::Generic rdata_unknown_large("\\# 4 ffb2c300");
+    EXPECT_LT(0, rdata_unknown_large.compare(rdata_unknown));
+    EXPECT_GT(0, rdata_unknown.compare(rdata_unknown_large));
+
+    // the absence of an octet sorts before a zero octet.
+    generic::Generic rdata_unknown_short("\\# 3 a1b2c3");
+    EXPECT_GT(0, rdata_unknown_short.compare(rdata_unknown));
+    EXPECT_LT(0, rdata_unknown.compare(rdata_unknown_short));
+}
+
+TEST_F(Rdata_Unknown_Test, LeftShiftOperator) {
+    ostringstream oss;
+    oss << rdata_unknown;
+    EXPECT_EQ(rdata_unknown.toText(), oss.str());
+}
+
+//
+// Tests for global utility functions
+//
+TEST_F(RdataTest, compareNames) {
+    Name small("a.example");
+    Name large("example");
+
+    // Check the case where the order is different from the owner name
+    // comparison:
+    EXPECT_TRUE(small > large);
+    EXPECT_EQ(-1, compareNames(small, large));
+    EXPECT_EQ(1, compareNames(large, small));
+
+    // Check case insensitive comparison:
+    Name small_upper("A.EXAMPLE");
+    EXPECT_EQ(0, compareNames(small, small_upper));
+
+    // the absence of an octet sorts before a zero octet.
+    Name large2("a.example2");
+    EXPECT_EQ(-1, compareNames(small, large2));
+    EXPECT_EQ(1, compareNames(large2, small));
+}
+}
diff --git a/src/lib/dns/tests/rdata_unittest.h b/src/lib/dns/tests/rdata_unittest.h
new file mode 100644
index 0000000..0c9178e
--- /dev/null
+++ b/src/lib/dns/tests/rdata_unittest.h
@@ -0,0 +1,92 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef RDATA_UNITTEST_H
+#define RDATA_UNITTEST_H 1
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+#include <dns/rdata.h>
+#include <dns/master_lexer.h>
+
+#include <gtest/gtest.h>
+
+#include <string>
+#include <sstream>
+
+namespace isc {
+namespace dns {
+namespace rdata {
+class RdataTest : public ::testing::Test {
+protected:
+    RdataTest();
+    static RdataPtr rdataFactoryFromFile(const RRType& rrtype,
+                                         const RRClass& rrclass,
+                                         const char* datafile,
+                                         size_t position = 0);
+
+    // Common check to see the result of Rdata construction of given type
+    // (template parameter RdataType) either from std::string or with
+    // MasterLexer object.  If it's expected to succeed the result should be
+    // identical to the commonly used test data (rdata_expected); otherwise it
+    // should result in the exception specified as the template parameter:
+    // ExForString for the string version, and ExForLexer for the lexer
+    // version.  throw_str_version and throw_lexer_version are set to true
+    // iff the string/lexer version is expected to throw, respectively.
+    // Parameter origin can be set to non NULL for the origin parameter of
+    // the lexer version of Rdata constructor.
+    template <typename RdataType, typename ExForString, typename ExForLexer>
+    void checkFromText(const std::string& rdata_txt,
+                       const RdataType& rdata_expected,
+                       bool throw_str_version = true,
+                       bool throw_lexer_version = true,
+                       const Name* origin = NULL)
+    {
+        SCOPED_TRACE(rdata_txt);
+
+        if (throw_str_version) {
+            EXPECT_THROW(RdataType rdata(rdata_txt), ExForString);
+        } else {
+            EXPECT_EQ(0, RdataType(rdata_txt).compare(rdata_expected));
+        }
+
+        std::stringstream ss(rdata_txt);
+        MasterLexer lexer;
+        lexer.pushSource(ss);
+        if (throw_lexer_version) {
+            EXPECT_THROW(RdataType rdata(lexer, origin, MasterLoader::DEFAULT,
+                                         loader_cb), ExForLexer);
+        } else {
+            EXPECT_EQ(0, RdataType(lexer, origin, MasterLoader::DEFAULT,
+                                   loader_cb).compare(rdata_expected));
+        }
+    }
+
+    isc::util::OutputBuffer obuffer;
+    MessageRenderer renderer;
+    /// This is an RDATA object of some "unknown" RR type so that it can be
+    /// used to test the compare() method against a well-known RR type.
+    RdataPtr rdata_nomatch;
+    MasterLexer lexer;
+    MasterLoaderCallbacks loader_cb;
+};
+
+namespace test {
+RdataPtr
+createRdataUsingLexer(const RRType& rrtype, const RRClass& rrclass,
+                      const std::string& str);
+}
+
+}
+}
+}
+#endif // RDATA_UNITTEST_H
+
+// Local Variables:
+// mode: c++
+// End:
diff --git a/src/lib/dns/tests/rdatafields_unittest.cc b/src/lib/dns/tests/rdatafields_unittest.cc
new file mode 100644
index 0000000..0531439
--- /dev/null
+++ b/src/lib/dns/tests/rdatafields_unittest.cc
@@ -0,0 +1,366 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <vector>
+
+#include <exceptions/exceptions.h>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/name.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rdatafields.h>
+#include <dns/tests/unittest_util.h>
+
+#include <util/unittests/wiredata.h>
+
+#include <gtest/gtest.h>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::OutputBuffer;
+using isc::util::InputBuffer;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class RdataFieldsTest : public ::testing::Test {
+protected:
+    RdataFieldsTest() : obuffer(0), ns_name("example.com"),
+                        other_name("www.example.com")
+    {}
+    void constructCommonTests(const RdataFields& fields,
+                              const uint8_t* const expected_data,
+                              const size_t expected_data_len);
+    void constructCommonTestsNS(const RdataFields& fields);
+    void constructCommonTestsTXT(const RdataFields& fields);
+    void constructCommonTestsRRSIG(const RdataFields& fields);
+    void constructCommonTestsOPT(const RdataFields& fields);
+    OutputBuffer obuffer;
+    MessageRenderer renderer;
+    const Name ns_name;
+    const Name other_name;
+    vector<unsigned char> expected_wire;
+    vector<unsigned char> fields_wire;
+};
+
+const uint8_t in_a_data[] = { 192, 0, 2, 1 };
+// binary representation of example.com.
+const uint8_t ns_data[] = { 0x07, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65,
+                            0x03, 0x63, 0x6f, 0x6d, 0x00 };
+
+//
+// IN/A RDATA: fixed length, single data field
+//
+void
+RdataFieldsTest::constructCommonTests(const RdataFields& fields,
+                                      const uint8_t* const expected_data,
+                                      const size_t expected_data_len)
+{
+    matchWireData(expected_data, expected_data_len,
+                  fields.getData(), fields.getDataLength());
+
+    EXPECT_EQ(sizeof(RdataFields::FieldSpec), fields.getFieldSpecDataSize());
+    EXPECT_EQ(1, fields.getFieldCount());
+    EXPECT_EQ(RdataFields::DATA, fields.getFieldSpec(0).type);
+    EXPECT_EQ(4, fields.getFieldSpec(0).len);
+
+    fields.toWire(obuffer);
+    matchWireData(expected_data, expected_data_len,
+                  obuffer.getData(), obuffer.getLength());
+
+    fields.toWire(renderer);
+    matchWireData(expected_data, expected_data_len,
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(RdataFieldsTest, constructFromRdata) {
+    const RdataFields fields(in::A("192.0.2.1"));
+    constructCommonTests(fields, in_a_data, sizeof(in_a_data));
+}
+
+TEST_F(RdataFieldsTest, constructFromParams) {
+    const RdataFields::FieldSpec spec(RdataFields::DATA, 4);
+    const RdataFields fields(&spec, sizeof(spec), in_a_data,
+                             sizeof(in_a_data));
+    constructCommonTests(fields, in_a_data, sizeof(in_a_data));
+}
+
+//
+// NS RDATA: containing a compressible name.
+//
+void
+RdataFieldsTest::constructCommonTestsNS(const RdataFields& fields) {
+    EXPECT_EQ(sizeof(RdataFields::FieldSpec), fields.getFieldSpecDataSize());
+    EXPECT_EQ(1, fields.getFieldCount());
+    EXPECT_EQ(RdataFields::COMPRESSIBLE_NAME, fields.getFieldSpec(0).type);
+    EXPECT_EQ(ns_name.getLength(), fields.getFieldSpec(0).len);
+
+    expected_wire.clear();
+    UnitTestUtil::readWireData("rdatafields1.wire", expected_wire);
+    other_name.toWire(obuffer);
+    fields.toWire(obuffer);
+    matchWireData(&expected_wire[0], expected_wire.size(),
+                  obuffer.getData(), obuffer.getLength());
+
+    expected_wire.clear();
+    UnitTestUtil::readWireData("rdatafields2.wire", expected_wire);
+    other_name.toWire(renderer);
+    fields.toWire(renderer);
+    matchWireData(&expected_wire[0], expected_wire.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(RdataFieldsTest, constructFromRdataNS) {
+    const RdataFields fields_ns((generic::NS(ns_name)));
+    constructCommonTestsNS(fields_ns);
+}
+
+TEST_F(RdataFieldsTest, constructFromParamsNS) {
+    const RdataFields::FieldSpec spec(RdataFields::COMPRESSIBLE_NAME,
+                                      sizeof(ns_data));
+    const RdataFields fields_ns(&spec, sizeof(spec), ns_data, sizeof(ns_data));
+    constructCommonTestsNS(fields_ns);
+}
+
+//
+// TXT RDATA: multiple fields, lengths vary
+//
+void
+RdataFieldsTest::constructCommonTestsTXT(const RdataFields& fields) {
+    // Since all fields are plain data, they are handled as a single data
+    // field.
+    EXPECT_EQ(sizeof(RdataFields::FieldSpec), fields.getFieldSpecDataSize());
+    EXPECT_EQ(1, fields.getFieldCount());
+    EXPECT_EQ(RdataFields::DATA, fields.getFieldSpec(0).type);
+    EXPECT_EQ(expected_wire.size(), fields.getFieldSpec(0).len);
+
+    fields.toWire(obuffer);
+    matchWireData(&expected_wire[0], expected_wire.size(),
+                  obuffer.getData(), obuffer.getLength());
+
+    fields.toWire(renderer);
+    matchWireData(&expected_wire[0], expected_wire.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(RdataFieldsTest, constructFromRdataTXT) {
+    UnitTestUtil::readWireData("rdatafields3.wire", expected_wire);
+    InputBuffer ibuffer(&expected_wire[0], expected_wire.size());
+    const uint16_t rdlen = ibuffer.readUint16();
+    const RdataFields fields(generic::TXT(ibuffer, rdlen));
+
+    // drop the RDLEN part
+    expected_wire.erase(expected_wire.begin(), expected_wire.begin() + 2);
+
+    constructCommonTestsTXT(fields);
+}
+
+TEST_F(RdataFieldsTest, constructFromParamsTXT) {
+    UnitTestUtil::readWireData("rdatafields3.wire", expected_wire);
+    expected_wire.erase(expected_wire.begin(), expected_wire.begin() + 2);
+    const RdataFields::FieldSpec spec(RdataFields::DATA, expected_wire.size());
+    const RdataFields fields(&spec, sizeof(spec), &expected_wire[0],
+                             expected_wire.size());
+    constructCommonTestsTXT(fields);
+}
+
+//
+// RRSIG: multiple fields, with an incompressible name
+//
+void
+RdataFieldsTest::constructCommonTestsRRSIG(const RdataFields& fields) {
+    // In terms of RdataFields RRSIG RDATA consists of 3 fields:
+    // - 18-byte data field (from the "type covered" field to "key tag" field)
+    // - an incompressible name field (for the signer's name field).
+    //   this is a variable length field.  In this test it's a 13-byte field.
+    // - a variable-length data field for the signature.  In this tests
+    //   it's a 15-byte field.
+    EXPECT_EQ(3 * sizeof(RdataFields::FieldSpec),
+              fields.getFieldSpecDataSize());
+    EXPECT_EQ(3, fields.getFieldCount());
+    EXPECT_EQ(RdataFields::DATA, fields.getFieldSpec(0).type);
+    EXPECT_EQ(18, fields.getFieldSpec(0).len);
+    EXPECT_EQ(RdataFields::INCOMPRESSIBLE_NAME, fields.getFieldSpec(1).type);
+    EXPECT_EQ(13, fields.getFieldSpec(1).len);
+    EXPECT_EQ(RdataFields::DATA, fields.getFieldSpec(2).type);
+    EXPECT_EQ(15, fields.getFieldSpec(2).len);
+
+    expected_wire.clear();
+    UnitTestUtil::readWireData("rdatafields5.wire", expected_wire);
+    Name("com").toWire(obuffer);
+    obuffer.writeUint16(fields.getDataLength());
+    fields.toWire(obuffer);
+    other_name.toWire(obuffer);
+    matchWireData(&expected_wire[0], expected_wire.size(),
+                  obuffer.getData(), obuffer.getLength());
+
+    expected_wire.clear();
+    UnitTestUtil::readWireData("rdatafields6.wire", expected_wire);
+    Name("com").toWire(renderer);
+    renderer.writeUint16(fields.getDataLength());
+    fields.toWire(renderer);    // the signer field won't be compressed
+    other_name.toWire(renderer); // but will be used as a compression target
+    matchWireData(&expected_wire[0], expected_wire.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(RdataFieldsTest, constructFromRdataRRSIG) {
+    UnitTestUtil::readWireData("rdatafields4.wire", expected_wire);
+    InputBuffer ibuffer(&expected_wire[0], expected_wire.size());
+    const uint16_t rdlen = ibuffer.readUint16();
+    const RdataFields fields(generic::RRSIG(ibuffer, rdlen));
+
+    // drop the RDLEN part
+    expected_wire.erase(expected_wire.begin(), expected_wire.begin() + 2);
+
+    constructCommonTestsRRSIG(fields);
+}
+
+TEST_F(RdataFieldsTest, constructFromParamsRRSIG) {
+    UnitTestUtil::readWireData("rdatafields4.wire", fields_wire);
+    fields_wire.erase(fields_wire.begin(), fields_wire.begin() + 2);
+
+    const RdataFields::FieldSpec specs[] = {
+        RdataFields::FieldSpec(RdataFields::DATA, 18),
+        RdataFields::FieldSpec(RdataFields::INCOMPRESSIBLE_NAME, 13),
+        RdataFields::FieldSpec(RdataFields::DATA, 15)
+    };
+    const RdataFields fields(specs, sizeof(specs), &fields_wire[0],
+                             fields_wire.size());
+    constructCommonTestsRRSIG(fields);
+}
+
+TEST_F(RdataFieldsTest, convertRdatatoParams) {
+    // Confirm we can restore the original data from the serialized data.
+    // We use RRSIG as a relatively complicated field structure.
+    UnitTestUtil::readWireData("rdatafields4.wire", expected_wire);
+    InputBuffer ibuffer(&expected_wire[0], expected_wire.size());
+    const uint16_t rdlen = ibuffer.readUint16();
+    const RdataFields fields(generic::RRSIG(ibuffer, rdlen));
+
+    expected_wire.erase(expected_wire.begin(), expected_wire.begin() + 2);
+
+    // Copy the data in separate storage
+    vector<uint8_t> spec_store(fields.getFieldSpecDataSize());
+    void* cp_spec = &spec_store[0];
+    memcpy(cp_spec, fields.getFieldSpecData(), spec_store.size());
+    vector<uint8_t> data_store(fields.getDataLength());
+    memcpy(&data_store[0], fields.getData(), fields.getDataLength());
+
+    // Restore the data in the form of RdataFields
+    const RdataFields fields_byparams(cp_spec, fields.getFieldSpecDataSize(),
+                                      &data_store[0], fields.getDataLength());
+
+    // Check it's valid
+    constructCommonTestsRRSIG(fields_byparams);
+}
+
+//
+// OPT: an empty RDATA
+//
+void
+RdataFieldsTest::constructCommonTestsOPT(const RdataFields& fields) {
+    EXPECT_EQ(0, fields.getFieldSpecDataSize());
+    EXPECT_EQ(0, fields.getFieldCount());
+    EXPECT_EQ(0, fields.getDataLength());
+    EXPECT_EQ((const uint8_t*) NULL, fields.getData());
+    fields.toWire(obuffer);
+    EXPECT_EQ(0, obuffer.getLength());
+    fields.toWire(renderer);
+    EXPECT_EQ(0, renderer.getLength());
+}
+
+TEST_F(RdataFieldsTest, constructFromRdataOPT) {
+    InputBuffer ibuffer(NULL, 0);
+    const RdataFields fields(generic::OPT(ibuffer, 0));
+    constructCommonTestsOPT(fields);
+}
+
+TEST_F(RdataFieldsTest, constructFromParamsOPT) {
+    const RdataFields fields(NULL, 0, NULL, 0);
+    constructCommonTestsOPT(fields);
+}
+
+// Invalid input to the "from parameter" constructor: sum of the field lengths
+// is not equal to the data length.
+TEST_F(RdataFieldsTest, invalidFieldLength) {
+    UnitTestUtil::readWireData("rdatafields4.wire", fields_wire);
+    fields_wire.erase(fields_wire.begin(), fields_wire.begin() + 2);
+
+    const RdataFields::FieldSpec specs[] = {
+        RdataFields::FieldSpec(RdataFields::DATA, 18),
+        RdataFields::FieldSpec(RdataFields::INCOMPRESSIBLE_NAME, 13),
+        RdataFields::FieldSpec(RdataFields::DATA, 14)
+    };
+    // sum of field len < data len
+    EXPECT_THROW(RdataFields(specs, 3, &fields_wire[0], fields_wire.size()),
+                 isc::InvalidParameter);
+    // sum of field len > data len
+    EXPECT_THROW(RdataFields(specs, 3, &fields_wire[0],
+                             fields_wire.size() - 2),
+                 isc::InvalidParameter);
+}
+
+// Invalid input to the "from parameter" constructor: NULL vs length mismatch
+TEST_F(RdataFieldsTest, mismatchFieldLengthAndData) {
+    const unsigned char dummy_data = 0;
+    const RdataFields::FieldSpec dummy_spec(RdataFields::DATA, 1);
+
+    EXPECT_THROW(RdataFields(NULL, 1, &dummy_data, 1), isc::InvalidParameter);
+    EXPECT_THROW(RdataFields(&dummy_spec, 0, NULL, 0), isc::InvalidParameter);
+    EXPECT_THROW(RdataFields(&dummy_spec, 1, NULL, 1), isc::InvalidParameter);
+    EXPECT_THROW(RdataFields(NULL, 0, &dummy_data, 0), isc::InvalidParameter);
+}
+
+// Bogus input to getFieldSpec()
+TEST_F(RdataFieldsTest, getFieldSpecWithBadFieldId) {
+    const RdataFields fields_in_a(in::A("192.0.2.1"));
+    EXPECT_THROW(fields_in_a.getFieldSpec(1), isc::OutOfRange);
+}
+
+// Tests for unexpected methods in RdataFieldComposerTest.  Confirm
+// a call to these methods triggers an exception.  Expected methods are
+// tested via other tests above.
+class DummyRdata : public Rdata {
+public:
+    enum Mode { CLEAR, SKIP, TRIM };
+    explicit DummyRdata(Mode mode) : mode_(mode) {}
+    DummyRdata(const DummyRdata& source) : Rdata(), mode_(source.mode_) {}
+    virtual ~DummyRdata() {}
+    virtual void toWire(AbstractMessageRenderer& renderer) const {
+        // call the unexpected method corresponding to the test mode.
+        // method parameters don't matter.
+        switch (mode_) {
+        case CLEAR:
+            renderer.clear();
+            break;
+        case SKIP:
+            renderer.skip(2);
+            break;
+        case TRIM:
+            renderer.trim(2);
+            break;
+        }
+    }
+    
+    // These are defined only to make the compiler happy.  We don't use them
+    // for the test.
+    virtual string toText() const { return (""); }
+    virtual void toWire(OutputBuffer&) const {}
+    virtual int compare(const Rdata&) const { return (0); }
+private:
+    const int mode_;
+};
+
+TEST(RdataFieldComposerTest, unusedMethods) {
+    EXPECT_THROW(RdataFields(DummyRdata(DummyRdata::CLEAR)), isc::Unexpected);
+}
+}
diff --git a/src/lib/dns/tests/rrclass_unittest.cc b/src/lib/dns/tests/rrclass_unittest.cc
new file mode 100644
index 0000000..ae85f01
--- /dev/null
+++ b/src/lib/dns/tests/rrclass_unittest.cc
@@ -0,0 +1,174 @@
+// Copyright (C) 2010-2017 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <gtest/gtest.h>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/rrclass.h>
+
+#include <dns/tests/unittest_util.h>
+#include <util/unittests/wiredata.h>
+
+#include <boost/scoped_ptr.hpp>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using boost::scoped_ptr;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class RRClassTest : public ::testing::Test {
+protected:
+    RRClassTest() : obuffer(0) {}
+
+    OutputBuffer obuffer;
+    MessageRenderer renderer;
+
+    static RRClass rrclassFactoryFromWire(const char* datafile);
+    static const RRClass rrclass_1, rrclass_0x80, rrclass_0x800,
+        rrclass_0x8000, rrclass_max;
+    static const uint8_t wiredata[];
+};
+
+const RRClass RRClassTest::rrclass_1(1);
+const RRClass RRClassTest::rrclass_0x80(0x80);
+const RRClass RRClassTest::rrclass_0x800(0x800);
+const RRClass RRClassTest::rrclass_0x8000(0x8000);
+const RRClass RRClassTest::rrclass_max(0xffff);
+// This is wire-format data for the above sample RRClass rendered in the
+// appearing order.
+const uint8_t RRClassTest::wiredata[] = { 0x00, 0x01, 0x00, 0x80, 0x08,
+                                          0x00, 0x80, 0x00, 0xff, 0xff };
+
+RRClass
+RRClassTest::rrclassFactoryFromWire(const char* datafile) {
+    std::vector<unsigned char> data;
+    UnitTestUtil::readWireData(datafile, data);
+
+    InputBuffer buffer(&data[0], data.size());
+
+    return (RRClass(buffer));
+}
+
+TEST_F(RRClassTest, fromTextConstructor) {
+    EXPECT_EQ("IN", RRClass("IN").toText());
+    EXPECT_EQ("CH", RRClass("CH").toText());
+
+    EXPECT_EQ("CLASS65535", RRClass("CLASS65535").toText());
+
+    // some uncommon cases: see the corresponding RRType tests.
+    EXPECT_EQ(53, RRClass("CLASS00053").getCode());
+    EXPECT_THROW(RRClass("CLASS000053"), InvalidRRClass);
+
+    // bogus CLASSnnn representations: should trigger an exception
+    EXPECT_THROW(RRClass("CLASS"), InvalidRRClass);
+    EXPECT_THROW(RRClass("CLASS-1"), InvalidRRClass);
+    EXPECT_THROW(RRClass("CLASSxxx"), InvalidRRClass);
+    EXPECT_THROW(RRClass("CLASS65536"), InvalidRRClass);
+    EXPECT_THROW(RRClass("CLASS6500x"), InvalidRRClass);
+    EXPECT_THROW(RRClass("CLASS65000 "), InvalidRRClass);
+}
+
+TEST_F(RRClassTest, fromWire) {
+    EXPECT_EQ(0x1234,
+              rrclassFactoryFromWire("rrcode16_fromWire1").getCode());
+    EXPECT_THROW(rrclassFactoryFromWire("rrcode16_fromWire2"),
+                 IncompleteRRClass);
+}
+
+TEST_F(RRClassTest, caseConstruct) {
+    EXPECT_EQ("IN", RRClass("in").toText());
+    EXPECT_EQ("CH", RRClass("ch").toText());
+    EXPECT_EQ("CLASS65535", RRClass("class65535").toText());
+}
+
+TEST_F(RRClassTest, toText) {
+    EXPECT_EQ("IN", RRClass(1).toText());
+    EXPECT_EQ("CLASS65000", RRClass(65000).toText());
+}
+
+TEST_F(RRClassTest, createFromText) {
+    scoped_ptr<RRClass> chclass(RRClass::createFromText("CH"));
+    EXPECT_TRUE(chclass);
+    EXPECT_EQ("CH", chclass->toText());
+
+    scoped_ptr<RRClass> zzclass(RRClass::createFromText("ZZ"));
+    EXPECT_FALSE(zzclass);
+}
+
+TEST_F(RRClassTest, toWireBuffer) {
+    rrclass_1.toWire(obuffer);
+    rrclass_0x80.toWire(obuffer);
+    rrclass_0x800.toWire(obuffer);
+    rrclass_0x8000.toWire(obuffer);
+    rrclass_max.toWire(obuffer);
+
+    matchWireData(wiredata, sizeof (wiredata),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(RRClassTest, toWireRenderer) {
+    rrclass_1.toWire(renderer);
+    rrclass_0x80.toWire(renderer);
+    rrclass_0x800.toWire(renderer);
+    rrclass_0x8000.toWire(renderer);
+    rrclass_max.toWire(renderer);
+
+    matchWireData(wiredata, sizeof (wiredata),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(RRClassTest, wellKnownClass) {
+    EXPECT_EQ(1, RRClass::IN().getCode());
+    EXPECT_EQ("IN", RRClass::IN().toText());
+}
+
+TEST_F(RRClassTest, compare) {
+    EXPECT_TRUE(RRClass(1) == RRClass("IN"));
+    EXPECT_TRUE(RRClass(1).equals(RRClass("IN")));
+    EXPECT_TRUE(RRClass(0).nequals(RRClass("IN")));
+
+    EXPECT_TRUE(RRClass("IN") < RRClass("CH"));
+    EXPECT_TRUE(RRClass(100) < RRClass(65535));
+}
+
+// test operator<<.  We simply confirm it appends the result of toText().
+TEST_F(RRClassTest, LeftShiftOperator) {
+    ostringstream oss;
+    oss << RRClass::IN();
+    EXPECT_EQ(RRClass::IN().toText(), oss.str());
+}
+
+// Below, we'll check definitions for all well-known RR classes; whether they
+// are defined and have the correct parameter values.  Test data are generated
+// from the list available at:
+// http://www.iana.org/assignments/dns-parameters/dns-parameters.xml
+struct ClassParam {
+    const char* const txt;      // "IN", "CH", etc
+    const uint16_t code;        // 1, 3,
+    const RRClass& (*obj)();     // RRClass::IN(), etc
+} known_classes[] = {
+    {"IN", 1, RRClass::IN}, {"CH", 3, RRClass::CH}, {"HS", 4, RRClass::HS},
+    {"NONE", 254, RRClass::NONE}, {"ANY", 255, RRClass::ANY},
+    {NULL, 0, NULL}
+};
+
+TEST(RRClassConstTest, wellKnowns) {
+    for (int i = 0; known_classes[i].txt; ++i) {
+        SCOPED_TRACE("Checking well known RRClass: " +
+                     string(known_classes[i].txt));
+        EXPECT_EQ(known_classes[i].code,
+                  RRClass(known_classes[i].txt).getCode());
+        EXPECT_EQ(known_classes[i].code,
+                  (*known_classes[i].obj)().getCode());
+    }
+}
+}
diff --git a/src/lib/dns/tests/rrcollator_unittest.cc b/src/lib/dns/tests/rrcollator_unittest.cc
new file mode 100644
index 0000000..4247911
--- /dev/null
+++ b/src/lib/dns/tests/rrcollator_unittest.cc
@@ -0,0 +1,208 @@
+// Copyright (C) 2012-2020 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <exceptions/exceptions.h>
+
+#include <dns/name.h>
+#include <dns/master_loader.h>
+#include <dns/master_loader_callbacks.h>
+#include <dns/rrclass.h>
+#include <dns/rrcollator.h>
+#include <dns/rdata.h>
+#include <dns/rrset.h>
+#include <dns/rrttl.h>
+
+#include <gtest/gtest.h>
+
+#include <functional>
+#include <sstream>
+#include <vector>
+
+using std::vector;
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+namespace ph = std::placeholders;
+
+namespace {
+
+typedef RRCollator::AddRRsetCallback AddRRsetCallback;
+
+void
+addRRset(const RRsetPtr& rrset, vector<ConstRRsetPtr>* to_append,
+         const bool* do_throw) {
+    if (*do_throw) {
+        isc_throw(isc::Unexpected, "faked failure");
+    }
+    to_append->push_back(rrset);
+}
+
+class RRCollatorTest : public ::testing::Test {
+protected:
+    RRCollatorTest() :
+        origin_("example.com"), rrclass_(RRClass::IN()), rrttl_(3600),
+        throw_from_callback_(false),
+        collator_(std::bind(addRRset, ph::_1, &rrsets_, &throw_from_callback_)),
+        rr_callback_(collator_.getCallback()),
+        a_rdata1_(createRdata(RRType::A(), rrclass_, "192.0.2.1")),
+        a_rdata2_(createRdata(RRType::A(), rrclass_, "192.0.2.2")),
+        txt_rdata_(createRdata(RRType::TXT(), rrclass_, "test")),
+        sig_rdata1_(createRdata(RRType::RRSIG(), rrclass_,
+                                "A 5 3 3600 20000101000000 20000201000000 "
+                                "12345 example.com. FAKE")),
+        sig_rdata2_(createRdata(RRType::RRSIG(), rrclass_,
+                                "NS 5 3 3600 20000101000000 20000201000000 "
+                                "12345 example.com. FAKE"))
+    {}
+
+    void checkRRset(const Name& expected_name, const RRClass& expected_class,
+                    const RRType& expected_type, const RRTTL& expected_ttl,
+                    const vector<ConstRdataPtr>& expected_rdatas) {
+        SCOPED_TRACE(expected_name.toText(true) + "/" +
+                     expected_class.toText() + "/" + expected_type.toText());
+
+        // This test always clears rrsets_ to confirm RRsets are added
+        // one-by-one
+        ASSERT_EQ(1, rrsets_.size());
+
+        ConstRRsetPtr actual = rrsets_[0];
+        EXPECT_EQ(expected_name, actual->getName());
+        EXPECT_EQ(expected_class, actual->getClass());
+        EXPECT_EQ(expected_type, actual->getType());
+        EXPECT_EQ(expected_ttl, actual->getTTL());
+        ASSERT_EQ(expected_rdatas.size(), actual->getRdataCount());
+        vector<ConstRdataPtr>::const_iterator it = expected_rdatas.begin();
+        for (RdataIteratorPtr rit = actual->getRdataIterator();
+             !rit->isLast();
+             rit->next()) {
+            EXPECT_EQ(0, rit->getCurrent().compare(**it));
+            ++it;
+        }
+
+        rrsets_.clear();
+    }
+
+    const Name origin_;
+    const RRClass rrclass_;
+    const RRTTL rrttl_;
+    vector<ConstRRsetPtr> rrsets_;
+    bool throw_from_callback_;
+    RRCollator collator_;
+    AddRRCallback rr_callback_;
+    const RdataPtr a_rdata1_, a_rdata2_, txt_rdata_, sig_rdata1_, sig_rdata2_;
+    vector<ConstRdataPtr> rdatas_; // placeholder for expected data
+};
+
+TEST_F(RRCollatorTest, basicCases) {
+    // Add two RRs belonging to the same RRset.  These will be buffered.
+    rr_callback_(origin_, rrclass_, RRType::A(), rrttl_, a_rdata1_);
+    EXPECT_TRUE(rrsets_.empty()); // not yet given as an RRset
+    rr_callback_(origin_, rrclass_, RRType::A(), rrttl_, a_rdata2_);
+    EXPECT_TRUE(rrsets_.empty()); // still not given
+
+    // Add another type of RR.  This completes the construction of the A RRset,
+    // which will be given via the callback.
+    rr_callback_(origin_, rrclass_, RRType::TXT(), rrttl_, txt_rdata_);
+    rdatas_.push_back(a_rdata1_);
+    rdatas_.push_back(a_rdata2_);
+    checkRRset(origin_, rrclass_, RRType::A(), rrttl_, rdatas_);
+
+    // Add the same type of RR but of different name.  This should make another
+    // callback for the previous TXT RR.
+    rr_callback_(Name("txt.example.com"), rrclass_, RRType::TXT(), rrttl_,
+                 txt_rdata_);
+    rdatas_.clear();
+    rdatas_.push_back(txt_rdata_);
+    checkRRset(origin_, rrclass_, RRType::TXT(), rrttl_, rdatas_);
+
+    // Add the same type and name of RR but of different class (rare case
+    // in practice)
+    rr_callback_(Name("txt.example.com"), RRClass::CH(), RRType::TXT(), rrttl_,
+                 txt_rdata_);
+    rdatas_.clear();
+    rdatas_.push_back(txt_rdata_);
+    checkRRset(Name("txt.example.com"), rrclass_, RRType::TXT(), rrttl_,
+               rdatas_);
+
+    // Tell the collator we are done, then we'll see the last RR as an RRset.
+    collator_.flush();
+    checkRRset(Name("txt.example.com"), RRClass::CH(), RRType::TXT(), rrttl_,
+               rdatas_);
+
+    // Redundant flush() will be no-op.
+    collator_.flush();
+    EXPECT_TRUE(rrsets_.empty());
+}
+
+TEST_F(RRCollatorTest, minTTLFirst) {
+    // RRs of the same RRset but has different TTLs.  The first RR has
+    // the smaller TTL, which should be used for the TTL of the RRset.
+    rr_callback_(origin_, rrclass_, RRType::A(), RRTTL(10), a_rdata1_);
+    rr_callback_(origin_, rrclass_, RRType::A(), RRTTL(20), a_rdata2_);
+    rdatas_.push_back(a_rdata1_);
+    rdatas_.push_back(a_rdata2_);
+    collator_.flush();
+    checkRRset(origin_, rrclass_, RRType::A(), RRTTL(10), rdatas_);
+}
+
+TEST_F(RRCollatorTest, maxTTLFirst) {
+    // RRs of the same RRset but has different TTLs.  The second RR has
+    // the smaller TTL, which should be used for the TTL of the RRset.
+    rr_callback_(origin_, rrclass_, RRType::A(), RRTTL(20), a_rdata1_);
+    rr_callback_(origin_, rrclass_, RRType::A(), RRTTL(10), a_rdata2_);
+    rdatas_.push_back(a_rdata1_);
+    rdatas_.push_back(a_rdata2_);
+    collator_.flush();
+    checkRRset(origin_, rrclass_, RRType::A(), RRTTL(10), rdatas_);
+}
+
+TEST_F(RRCollatorTest, addRRSIGs) {
+    // RRSIG is special; they are also distinguished by their covered types.
+    rr_callback_(origin_, rrclass_, RRType::RRSIG(), rrttl_, sig_rdata1_);
+    rr_callback_(origin_, rrclass_, RRType::RRSIG(), rrttl_, sig_rdata2_);
+
+    rdatas_.push_back(sig_rdata1_);
+    checkRRset(origin_, rrclass_, RRType::RRSIG(), rrttl_, rdatas_);
+}
+
+TEST_F(RRCollatorTest, emptyFlush) {
+    collator_.flush();
+    EXPECT_TRUE(rrsets_.empty());
+}
+
+TEST_F(RRCollatorTest, throwFromCallback) {
+    // Adding an A RR
+    rr_callback_(origin_, rrclass_, RRType::A(), rrttl_, a_rdata1_);
+
+    // Adding a TXT RR, which would trigger RRset callback, but in this test
+    // it throws.  The added TXT RR will be effectively lost.
+    throw_from_callback_ = true;
+    EXPECT_THROW(rr_callback_(origin_, rrclass_, RRType::TXT(), rrttl_,
+                              txt_rdata_), isc::Unexpected);
+
+    // We'll only see the A RR.
+    throw_from_callback_ = false;
+    collator_.flush();
+    rdatas_.push_back(a_rdata1_);
+    checkRRset(origin_, rrclass_, RRType::A(), rrttl_, rdatas_);
+}
+
+TEST_F(RRCollatorTest, withMasterLoader) {
+    // Test a simple case with MasterLoader.  There shouldn't be anything
+    // special, but that's the mainly intended usage of the collator, so we
+    // check it explicitly.
+    std::istringstream ss("example.com. 3600 IN A 192.0.2.1\n");
+    MasterLoader loader(ss, origin_, rrclass_,
+                        MasterLoaderCallbacks::getNullCallbacks(),
+                        collator_.getCallback());
+    loader.load();
+    collator_.flush();
+    rdatas_.push_back(a_rdata1_);
+    checkRRset(origin_, rrclass_, RRType::A(), rrttl_, rdatas_);
+}
+
+}
diff --git a/src/lib/dns/tests/rrparamregistry_unittest.cc b/src/lib/dns/tests/rrparamregistry_unittest.cc
new file mode 100644
index 0000000..90574d0
--- /dev/null
+++ b/src/lib/dns/tests/rrparamregistry_unittest.cc
@@ -0,0 +1,185 @@
+// Copyright (C) 2010-2020 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <string>
+#include <sstream>
+
+#include <stdint.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/rrclass.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrparamregistry.h>
+#include <dns/rrtype.h>
+#include <dns/master_loader.h>
+
+#include <boost/scoped_ptr.hpp>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+
+namespace {
+class RRParamRegistryTest : public ::testing::Test {
+protected:
+    RRParamRegistryTest()
+    {
+        ostringstream oss1;
+        oss1 << test_class_code;
+        // cppcheck-suppress useInitializationList
+        test_class_unknown_str = "CLASS" + oss1.str();
+
+        ostringstream oss2;
+        oss2 << test_type_code;
+        test_type_unknown_str = "TYPE" + oss2.str();
+    }
+    ~RRParamRegistryTest()
+    {
+        // cleanup any non well-known parameters that possibly remain
+        // as a side effect.
+        RRParamRegistry::getRegistry().removeType(test_type_code);
+        RRParamRegistry::getRegistry().removeClass(test_class_code);
+        RRParamRegistry::getRegistry().removeRdataFactory(
+            RRType(test_type_code), RRClass(test_class_code));
+        RRParamRegistry::getRegistry().removeRdataFactory(
+            RRType(test_type_code));
+    }
+
+    string test_class_unknown_str;
+    string test_type_unknown_str;
+
+    // we assume class/type numbers are officially unassigned.  If not we'll
+    // need to update the test cases.
+    static const uint16_t test_class_code = 65533;
+    static const uint16_t test_type_code = 65534;
+    static const string test_class_str;
+    static const string test_type_str;
+};
+
+const string RRParamRegistryTest::test_class_str("TESTCLASS");
+const string RRParamRegistryTest::test_type_str("TESTTYPE");
+
+TEST_F(RRParamRegistryTest, addRemove) {
+    RRParamRegistry::getRegistry().addType(test_type_str, test_type_code);
+    RRParamRegistry::getRegistry().addClass(test_class_str, test_class_code);
+    EXPECT_EQ(65533, RRClass("TESTCLASS").getCode());
+    EXPECT_EQ(65534, RRType("TESTTYPE").getCode());
+
+    // the first removal attempt should succeed
+    EXPECT_TRUE(RRParamRegistry::getRegistry().removeType(test_type_code));
+    // then toText() should treat it as an "unknown"
+    EXPECT_EQ(test_type_unknown_str, RRType(test_type_code).toText());
+    // attempt of removing non-existent mapping should result in 'false'
+    EXPECT_FALSE(RRParamRegistry::getRegistry().removeType(test_type_code));
+
+    // same set of tests for RR class.
+    EXPECT_TRUE(RRParamRegistry::getRegistry().removeClass(test_class_code));
+    EXPECT_EQ(test_class_unknown_str, RRClass(test_class_code).toText());
+    EXPECT_FALSE(RRParamRegistry::getRegistry().removeClass(test_class_code));
+}
+
+TEST_F(RRParamRegistryTest, addError) {
+    // An attempt to override a pre-registered class should fail with an
+    // exception, and the pre-registered one should remain in the registry.
+    EXPECT_THROW(RRParamRegistry::getRegistry().addClass(test_class_str, 1),
+                 RRClassExists);
+    EXPECT_EQ("IN", RRClass(1).toText());
+
+    // Same for RRType
+    EXPECT_THROW(RRParamRegistry::getRegistry().addType(test_type_str, 1),
+                 RRTypeExists);
+    EXPECT_EQ("A", RRType(1).toText());
+}
+
+class TestRdataFactory : public AbstractRdataFactory {
+public:
+    virtual RdataPtr create(const string& rdata_str) const
+    { return (RdataPtr(new in::A(rdata_str))); }
+    virtual RdataPtr create(InputBuffer& buffer, size_t rdata_len) const
+    { return (RdataPtr(new in::A(buffer, rdata_len))); }
+    virtual RdataPtr create(const Rdata& source) const
+    { return (RdataPtr(new in::A(dynamic_cast<const in::A&>(source)))); }
+    virtual RdataPtr create(MasterLexer& lexer, const Name* origin,
+                            MasterLoader::Options options,
+                            MasterLoaderCallbacks& callbacks) const
+    { return (RdataPtr(new in::A(lexer, origin, options, callbacks))); }
+};
+
+TEST_F(RRParamRegistryTest, addRemoveFactory) {
+    // By default, the test type/code pair should be considered "unknown",
+    // so the following should trigger an exception.
+    EXPECT_THROW(createRdata(RRType(test_type_code), RRClass(test_class_code),
+                             "192.0.2.1"),
+                 InvalidRdataText);
+    // Add factories so that we can treat this pair just like in::A.
+    RRParamRegistry::getRegistry().add(test_type_str, test_type_code,
+                                       test_class_str, test_class_code,
+                                       RdataFactoryPtr(new TestRdataFactory));
+    // Now it should be accepted, and should be identical to the same data of
+    // in::A.
+    EXPECT_EQ(0, in::A("192.0.2.1").compare(
+                  *createRdata(RRType(test_type_code), RRClass(test_class_code),
+                              "192.0.2.1")));
+    // It should still fail with other classes as we specified the factories
+    // as class-specific.
+    EXPECT_THROW(createRdata(RRType(test_type_code), RRClass("IN"),
+                             "192.0.2.1"),
+                 InvalidRdataText);
+    // Add the factories also as a class independent RRtype
+    RRParamRegistry::getRegistry().add(test_type_str, test_type_code,
+                                       RdataFactoryPtr(new TestRdataFactory));
+    // Now it should be okay for other classes than the test class.
+    EXPECT_EQ(0, in::A("192.0.2.1").compare(
+                  *createRdata(RRType(test_type_code), RRClass("IN"),
+                              "192.0.2.1")));
+
+    // Remove the added factories: first attempt should succeed; the second
+    // should return false as there's no match
+    EXPECT_TRUE(RRParamRegistry::getRegistry().removeRdataFactory(
+                    RRType(test_type_code), RRClass(test_class_code)));
+    EXPECT_FALSE(RRParamRegistry::getRegistry().removeRdataFactory(
+                     RRType(test_type_code), RRClass(test_class_code)));
+    EXPECT_TRUE(RRParamRegistry::getRegistry().removeRdataFactory(
+                    RRType(test_type_code)));
+    EXPECT_FALSE(RRParamRegistry::getRegistry().removeRdataFactory(
+                     RRType(test_type_code)));
+}
+
+RdataPtr
+createRdataHelper(const std::string& str) {
+    boost::scoped_ptr<AbstractRdataFactory> rdf(new TestRdataFactory);
+
+    std::stringstream ss(str);
+    MasterLexer lexer;
+    lexer.pushSource(ss);
+
+    MasterLoaderCallbacks callbacks(MasterLoaderCallbacks::getNullCallbacks());
+    const Name origin("example.org.");
+
+    return (rdf->create(lexer, &origin,
+                        MasterLoader::MANY_ERRORS,
+                        callbacks));
+}
+
+TEST_F(RRParamRegistryTest, createFromLexer) {
+    // This test basically checks that the string version of
+    // AbstractRdataFactory::create() is called by the MasterLexer
+    // variant of create().
+    EXPECT_EQ(0, in::A("192.168.0.1").compare(
+              *createRdataHelper("192.168.0.1")));
+
+    // This should parse only up to the end of line. Everything that
+    // comes afterwards is not parsed.
+    EXPECT_EQ(0, in::A("192.168.0.42").compare(
+              *createRdataHelper("192.168.0.42\na b c d e f")));
+}
+
+}
diff --git a/src/lib/dns/tests/rrset_collection_unittest.cc b/src/lib/dns/tests/rrset_collection_unittest.cc
new file mode 100644
index 0000000..be16ab5
--- /dev/null
+++ b/src/lib/dns/tests/rrset_collection_unittest.cc
@@ -0,0 +1,240 @@
+// Copyright (C) 2012-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <dns/rrset_collection.h>
+#include <dns/rrttl.h>
+#include <dns/rdataclass.h>
+
+#include <gtest/gtest.h>
+
+#include <list>
+#include <fstream>
+
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+using namespace std;
+
+namespace {
+
+class RRsetCollectionTest : public ::testing::Test {
+public:
+    RRsetCollectionTest() :
+        rrclass("IN"),
+        origin("example.org"),
+        collection(TEST_DATA_SRCDIR "/example.org", origin, rrclass)
+    {}
+
+    const RRClass rrclass;
+    const Name origin;
+    RRsetCollection collection;
+};
+
+TEST_F(RRsetCollectionTest, istreamConstructor) {
+    std::ifstream fs(TEST_DATA_SRCDIR "/example.org");
+    RRsetCollection collection2(fs, origin, rrclass);
+
+    RRsetCollectionBase::Iterator iter = collection.begin();
+    RRsetCollectionBase::Iterator iter2 = collection2.begin();
+    while (iter != collection.end()) {
+         ASSERT_TRUE(iter2 != collection2.end());
+         EXPECT_EQ((*iter).toText(), (*iter2).toText());
+         ++iter;
+         ++iter2;
+    }
+    ASSERT_TRUE(iter2 == collection2.end());
+}
+
+template <typename T, typename TP>
+void doFind(T& collection, const RRClass& rrclass) {
+    // Test the find() that returns ConstRRsetPtr
+    TP rrset = collection.find(Name("www.example.org"), rrclass, RRType::A());
+    EXPECT_TRUE(rrset);
+    EXPECT_EQ(RRType::A(), rrset->getType());
+    EXPECT_EQ(RRTTL(3600), rrset->getTTL());
+    EXPECT_EQ(RRClass("IN"), rrset->getClass());
+    EXPECT_EQ(Name("www.example.org"), rrset->getName());
+
+    // foo.example.org doesn't exist
+    rrset = collection.find(Name("foo.example.org"), rrclass, RRType::A());
+    EXPECT_FALSE(rrset);
+
+    // www.example.org exists, but not with MX
+    rrset = collection.find(Name("www.example.org"), rrclass, RRType::MX());
+    EXPECT_FALSE(rrset);
+
+    // www.example.org exists, with AAAA
+    rrset = collection.find(Name("www.example.org"), rrclass, RRType::AAAA());
+    EXPECT_TRUE(rrset);
+
+    // www.example.org with AAAA does not exist in RRClass::CH()
+    rrset = collection.find(Name("www.example.org"), RRClass::CH(),
+                            RRType::AAAA());
+    EXPECT_FALSE(rrset);
+}
+
+TEST_F(RRsetCollectionTest, findConst) {
+    // Test the find() that returns ConstRRsetPtr
+    const RRsetCollection& ccln = collection;
+    doFind<const RRsetCollection, ConstRRsetPtr>(ccln, rrclass);
+}
+
+TEST_F(RRsetCollectionTest, find) {
+    // Test the find() that returns RRsetPtr
+    doFind<RRsetCollection, RRsetPtr>(collection, rrclass);
+}
+
+void
+doAddAndRemove(RRsetCollection& collection, const RRClass& rrclass) {
+    // foo.example.org/A doesn't exist
+    RRsetPtr rrset_found = collection.find(Name("foo.example.org"), rrclass,
+                                           RRType::A());
+    EXPECT_FALSE(rrset_found);
+
+    // Add foo.example.org/A
+    RRsetPtr rrset(new BasicRRset(Name("foo.example.org"), rrclass, RRType::A(),
+                                  RRTTL(7200)));
+    rrset->addRdata(in::A("192.0.2.1"));
+    collection.addRRset(rrset);
+
+    // foo.example.org/A should now exist
+    rrset_found = collection.find(Name("foo.example.org"), rrclass,
+                                  RRType::A());
+    EXPECT_TRUE(rrset_found);
+    EXPECT_EQ(RRType::A(), rrset_found->getType());
+    EXPECT_EQ(RRTTL(7200), rrset_found->getTTL());
+    EXPECT_EQ(RRClass("IN"), rrset_found->getClass());
+    EXPECT_EQ(Name("foo.example.org"), rrset_found->getName());
+
+    // The collection must not be empty.
+    EXPECT_TRUE(collection.end() != collection.begin());
+
+    // Adding a duplicate RRset must throw.
+    EXPECT_THROW({
+        collection.addRRset(rrset);
+    }, isc::InvalidParameter);
+
+    // Remove foo.example.org/A, which should pass
+    EXPECT_TRUE(collection.removeRRset(Name("foo.example.org"),
+                                       rrclass, RRType::A()));
+    // foo.example.org/A should not exist now
+    rrset_found = collection.find(Name("foo.example.org"), rrclass,
+                                  RRType::A());
+    EXPECT_FALSE(rrset_found);
+
+    // Removing foo.example.org/A should fail now
+    EXPECT_FALSE(collection.removeRRset(Name("foo.example.org"),
+                                        rrclass, RRType::A()));
+}
+
+TEST_F(RRsetCollectionTest, addAndRemove) {
+    doAddAndRemove(collection, rrclass);
+}
+
+TEST_F(RRsetCollectionTest, empty) {
+    RRsetCollection cln;
+
+    // Here, cln is empty.
+    EXPECT_TRUE(cln.end() == cln.begin());
+
+    doAddAndRemove(cln, rrclass);
+
+    // cln should be empty again here, after the add and remove
+    // operations.
+    EXPECT_TRUE(cln.end() == cln.begin());
+}
+
+TEST_F(RRsetCollectionTest, iteratorTest) {
+    // The collection must not be empty.
+    EXPECT_TRUE(collection.end() != collection.begin());
+
+    // Here, we just count the records and do some basic tests on them.
+    size_t count = 0;
+    for (RRsetCollection::Iterator it = collection.begin();
+         it != collection.end(); ++it) {
+         ++count;
+         const AbstractRRset& rrset = *it;
+         EXPECT_EQ(rrclass, rrset.getClass());
+         EXPECT_EQ(RRTTL(3600), rrset.getTTL());
+    }
+
+    // example.org master file has SOA, NS, A, AAAA
+    EXPECT_EQ(4, count);
+}
+
+// This is a dummy class which is used in iteratorCompareDifferent test
+// to compare iterators from different RRsetCollectionBase
+// implementations.
+class MyRRsetCollection : public RRsetCollectionBase {
+public:
+    MyRRsetCollection()
+    {}
+
+    virtual isc::dns::ConstRRsetPtr find(const isc::dns::Name&,
+                                         const isc::dns::RRClass&,
+                                         const isc::dns::RRType&) const {
+        return (ConstRRsetPtr());
+    }
+
+    typedef std::list<isc::dns::RRset> MyCollection;
+
+protected:
+    class MyIter : public RRsetCollectionBase::Iter {
+    public:
+        MyIter(MyCollection::iterator& iter) :
+            iter_(iter)
+        {}
+
+        virtual const isc::dns::AbstractRRset& getValue() {
+            return (*iter_);
+        }
+
+        virtual IterPtr getNext() {
+            MyCollection::iterator it = iter_;
+            ++it;
+            return (RRsetCollectionBase::IterPtr(new MyIter(it)));
+        }
+
+        virtual bool equals(Iter& other) {
+            const MyIter* other_real = dynamic_cast<MyIter*>(&other);
+            if (other_real == NULL) {
+                return (false);
+            }
+            return (iter_ == other_real->iter_);
+        }
+
+    private:
+        MyCollection::iterator iter_;
+    };
+
+    virtual RRsetCollectionBase::IterPtr getBeginning() {
+        MyCollection::iterator it = dummy_list_.begin();
+        return (RRsetCollectionBase::IterPtr(new MyIter(it)));
+    }
+
+    virtual RRsetCollectionBase::IterPtr getEnd() {
+        MyCollection::iterator it = dummy_list_.end();
+        return (RRsetCollectionBase::IterPtr(new MyIter(it)));
+    }
+
+private:
+    MyCollection dummy_list_;
+};
+
+TEST_F(RRsetCollectionTest, iteratorCompareDifferent) {
+    // Create objects of two different RRsetCollectionBase
+    // implementations.
+    RRsetCollection cln1;
+    MyRRsetCollection cln2;
+
+    // Comparing two iterators from different RRsetCollectionBase
+    // implementations must not throw.
+    EXPECT_TRUE(cln2.begin() != cln1.begin());
+    EXPECT_TRUE(cln1.end() != cln2.end());
+}
+
+} // namespace
diff --git a/src/lib/dns/tests/rrset_unittest.cc b/src/lib/dns/tests/rrset_unittest.cc
new file mode 100644
index 0000000..0425812
--- /dev/null
+++ b/src/lib/dns/tests/rrset_unittest.cc
@@ -0,0 +1,442 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/name.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+#include <dns/rrttl.h>
+#include <dns/rrset.h>
+
+#include <dns/tests/unittest_util.h>
+#include <util/unittests/wiredata.h>
+
+#include <gtest/gtest.h>
+
+#include <stdexcept>
+#include <sstream>
+
+using namespace std;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::dns::rdata;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class RRsetTest : public ::testing::Test {
+protected:
+    RRsetTest() : buffer(0),
+                  test_name("test.example.com"),
+                  test_domain("example.com"),
+                  test_nsname("ns.example.com"),
+                  rrset_a(test_name, RRClass::IN(), RRType::A(), RRTTL(3600)),
+                  rrset_a_empty(test_name, RRClass::IN(), RRType::A(),
+                                RRTTL(3600)),
+                  rrset_any_a_empty(test_name, RRClass::ANY(), RRType::A(),
+                                    RRTTL(3600)),
+                  rrset_none_a_empty(test_name, RRClass::NONE(), RRType::A(),
+                                     RRTTL(3600)),
+                  rrset_ns(test_domain, RRClass::IN(), RRType::NS(),
+                           RRTTL(86400)),
+                  rrset_ch_txt(test_domain, RRClass::CH(), RRType::TXT(),
+                               RRTTL(0))
+    {
+        rrset_a.addRdata(in::A("192.0.2.1"));
+        rrset_a.addRdata(in::A("192.0.2.2"));
+    }
+
+    OutputBuffer buffer;
+    MessageRenderer renderer;
+    Name test_name;
+    Name test_domain;
+    Name test_nsname;
+    RRset rrset_a;
+    RRset rrset_a_empty;
+    RRset rrset_any_a_empty;
+    RRset rrset_none_a_empty;
+    RRset rrset_ns;
+    RRset rrset_ch_txt;
+    std::vector<unsigned char> wiredata;
+
+    // max number of Rdata objects added to a test RRset object.
+    // this is an arbitrary chosen limit, but should be sufficiently large
+    // in practice and reasonable even as an extreme test case.
+    static const int MAX_RDATA_COUNT = 100;
+};
+
+TEST_F(RRsetTest, getRdataCount) {
+    for (int i = 0; i < MAX_RDATA_COUNT; ++i) {
+        EXPECT_EQ(i, rrset_a_empty.getRdataCount());
+        rrset_a_empty.addRdata(in::A("192.0.2.1"));
+    }
+}
+
+TEST_F(RRsetTest, getName) {
+    EXPECT_EQ(test_name, rrset_a.getName());
+    EXPECT_EQ(test_domain, rrset_ns.getName());
+}
+
+TEST_F(RRsetTest, getClass) {
+    EXPECT_EQ(RRClass("IN"), rrset_a.getClass());
+    EXPECT_EQ(RRClass("CH"), rrset_ch_txt.getClass());
+}
+
+TEST_F(RRsetTest, getType) {
+    EXPECT_EQ(RRType("A"), rrset_a.getType());
+    EXPECT_EQ(RRType("NS"), rrset_ns.getType());
+    EXPECT_EQ(RRType("TXT"), rrset_ch_txt.getType());
+}
+
+TEST_F(RRsetTest, getTTL) {
+    EXPECT_EQ(RRTTL(3600), rrset_a.getTTL());
+    EXPECT_EQ(RRTTL(86400), rrset_ns.getTTL());
+    EXPECT_EQ(RRTTL(0), rrset_ch_txt.getTTL());
+}
+
+TEST_F(RRsetTest, setTTL) {
+    rrset_a.setTTL(RRTTL(86400));
+    EXPECT_EQ(RRTTL(86400), rrset_a.getTTL());
+    rrset_a.setTTL(RRTTL(0));
+    EXPECT_EQ(RRTTL(0), rrset_a.getTTL());
+}
+
+TEST_F(RRsetTest, isSameKind) {
+    RRset rrset_w(test_name, RRClass::IN(), RRType::A(), RRTTL(3600));
+    RRset rrset_x(test_name, RRClass::IN(), RRType::A(), RRTTL(3600));
+    RRset rrset_y(test_name, RRClass::IN(), RRType::NS(), RRTTL(3600));
+    RRset rrset_z(test_name, RRClass::CH(), RRType::A(), RRTTL(3600));
+    RRset rrset_p(test_nsname, RRClass::IN(), RRType::A(), RRTTL(3600));
+
+    EXPECT_TRUE(rrset_w.isSameKind(rrset_w));
+    EXPECT_TRUE(rrset_w.isSameKind(rrset_x));
+    EXPECT_FALSE(rrset_w.isSameKind(rrset_y));
+    EXPECT_FALSE(rrset_w.isSameKind(rrset_z));
+    EXPECT_FALSE(rrset_w.isSameKind(rrset_p));
+}
+
+void
+addRdataTestCommon(const RRset& rrset) {
+    ASSERT_EQ(2, rrset.getRdataCount());
+
+    RdataIteratorPtr it = rrset.getRdataIterator(); // cursor is set to the 1st
+    EXPECT_FALSE(it->isLast());
+    EXPECT_EQ(0, it->getCurrent().compare(in::A("192.0.2.1")));
+    it->next();
+    EXPECT_FALSE(it->isLast());
+    EXPECT_EQ(0, it->getCurrent().compare(in::A("192.0.2.2")));
+    it->next();
+    EXPECT_TRUE(it->isLast());
+}
+
+TEST_F(RRsetTest, addRdata) {
+    addRdataTestCommon(rrset_a);
+
+    // Reference version of addRdata() doesn't allow to add a different
+    // type of Rdata.
+    EXPECT_THROW(rrset_a.addRdata(generic::NS(test_nsname)), std::bad_cast);
+}
+
+TEST_F(RRsetTest, addRdataPtr) {
+    rrset_a_empty.addRdata(createRdata(rrset_a_empty.getType(),
+                                       rrset_a_empty.getClass(),
+                                       "192.0.2.1"));
+    rrset_a_empty.addRdata(createRdata(rrset_a_empty.getType(),
+                                       rrset_a_empty.getClass(),
+                                       "192.0.2.2"));
+    addRdataTestCommon(rrset_a_empty);
+}
+
+TEST_F(RRsetTest, addRdataPtrMismatched) {
+    // Pointer version of addRdata() doesn't type check and does allow to
+    //add a different type of Rdata as a result.
+
+    // Type mismatch
+    rrset_a_empty.addRdata(createRdata(RRType::NS(), RRClass::IN(),
+                                       "ns.example.com."));
+    EXPECT_EQ(1, rrset_a_empty.getRdataCount());
+
+    // Class mismatch
+    rrset_ch_txt.addRdata(createRdata(RRType::TXT(), RRClass::IN(),
+                                      "Test String"));
+    EXPECT_EQ(1, rrset_ch_txt.getRdataCount());
+}
+
+TEST_F(RRsetTest, addRdataString) {
+    rrset_a_empty.addRdata("192.0.2.1");
+    rrset_a_empty.addRdata("192.0.2.2");
+
+    addRdataTestCommon(rrset_a_empty);
+
+    // String version of addRdata() will throw for bad RDATA for
+    // RRType::A().
+    EXPECT_THROW(rrset_a_empty.addRdata("ns.example.com."), InvalidRdataText);
+    addRdataTestCommon(rrset_a_empty);
+}
+
+TEST_F(RRsetTest, iterator) {
+    // Iterator for an empty RRset.
+    RdataIteratorPtr it = rrset_a_empty.getRdataIterator();
+    EXPECT_TRUE(it->isLast());
+
+    // Normal case (already tested, but do it again just in case)
+    rrset_a_empty.addRdata(in::A("192.0.2.1"));
+    rrset_a_empty.addRdata(in::A("192.0.2.2"));
+    addRdataTestCommon(rrset_a_empty);
+
+    // Rewind test: should be repeat the iteration by calling first().
+    for (int i = 0; i < 2; ++i) {
+        it = rrset_a_empty.getRdataIterator();
+        it->first();
+        EXPECT_FALSE(it->isLast());
+        it->next();
+        EXPECT_FALSE(it->isLast());
+        it->next();
+        EXPECT_TRUE(it->isLast());
+    }
+}
+
+TEST_F(RRsetTest, toText) {
+    EXPECT_EQ("test.example.com. 3600 IN A 192.0.2.1\n"
+              "test.example.com. 3600 IN A 192.0.2.2\n",
+              rrset_a.toText());
+
+    // toText() cannot be performed for an empty RRset
+    EXPECT_THROW(rrset_a_empty.toText(), EmptyRRset);
+
+    // Unless it is type ANY or NONE
+    EXPECT_EQ("test.example.com. 3600 ANY A\n",
+              rrset_any_a_empty.toText());
+    EXPECT_EQ("test.example.com. 3600 NONE A\n",
+              rrset_none_a_empty.toText());
+}
+
+TEST_F(RRsetTest, getLength) {
+    // Empty RRset should throw
+    EXPECT_THROW(rrset_a_empty.getLength(), EmptyRRset);
+
+    // Unless it is type ANY or NONE:
+    // test.example.com = 1 + 4 + 1 + 7 + 1 + 3 + 1 = 18 octets
+    // TYPE field = 2 octets
+    // CLASS field = 2 octets
+    // TTL field = 4 octets
+    // RDLENGTH field = 2 octets
+    // Total = 18 + 2 + 2 + 4 + 2 = 28 octets
+    EXPECT_EQ(28, rrset_any_a_empty.getLength());
+    EXPECT_EQ(28, rrset_none_a_empty.getLength());
+
+    // RRset with single RDATA
+    // 28 (above) + 4 octets (A RDATA) = 32 octets
+    rrset_a_empty.addRdata(in::A("192.0.2.1"));
+    EXPECT_EQ(32, rrset_a_empty.getLength());
+
+    // 2 A RRs
+    rrset_a_empty.addRdata(in::A("192.0.2.2"));
+    EXPECT_EQ(32 + 32, rrset_a_empty.getLength());
+}
+
+TEST_F(RRsetTest, toWireBuffer) {
+    rrset_a.toWire(buffer);
+
+    UnitTestUtil::readWireData("rrset_toWire1", wiredata);
+    matchWireData(&wiredata[0], wiredata.size(),
+                  buffer.getData(), buffer.getLength());
+
+    // toWire() cannot be performed for an empty RRset except when
+    // class=ANY or class=NONE.
+    buffer.clear();
+    EXPECT_THROW(rrset_a_empty.toWire(buffer), EmptyRRset);
+
+    // When class=ANY or class=NONE, toWire() can also be performed for
+    // an empty RRset.
+    buffer.clear();
+    rrset_any_a_empty.toWire(buffer);
+    wiredata.clear();
+    UnitTestUtil::readWireData("rrset_toWire3", wiredata);
+    matchWireData(&wiredata[0], wiredata.size(),
+                  buffer.getData(), buffer.getLength());
+
+    buffer.clear();
+    rrset_none_a_empty.toWire(buffer);
+    wiredata.clear();
+    UnitTestUtil::readWireData("rrset_toWire4", wiredata);
+    matchWireData(&wiredata[0], wiredata.size(),
+                  buffer.getData(), buffer.getLength());
+}
+
+TEST_F(RRsetTest, toWireRenderer) {
+    rrset_ns.addRdata(generic::NS(test_nsname));
+
+    rrset_a.toWire(renderer);
+    rrset_ns.toWire(renderer);
+
+    UnitTestUtil::readWireData("rrset_toWire2", wiredata);
+    matchWireData(&wiredata[0], wiredata.size(),
+                  renderer.getData(), renderer.getLength());
+
+    // toWire() cannot be performed for an empty RRset except when
+    // class=ANY or class=NONE.
+    renderer.clear();
+    EXPECT_THROW(rrset_a_empty.toWire(renderer), EmptyRRset);
+
+    // When class=ANY or class=NONE, toWire() can also be performed for
+    // an empty RRset.
+    renderer.clear();
+    rrset_any_a_empty.toWire(renderer);
+    wiredata.clear();
+    UnitTestUtil::readWireData("rrset_toWire3", wiredata);
+    matchWireData(&wiredata[0], wiredata.size(),
+                  renderer.getData(), renderer.getLength());
+
+    renderer.clear();
+    rrset_none_a_empty.toWire(renderer);
+    wiredata.clear();
+    UnitTestUtil::readWireData("rrset_toWire4", wiredata);
+    matchWireData(&wiredata[0], wiredata.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+// test operator<<.  We simply confirm it appends the result of toText().
+TEST_F(RRsetTest, LeftShiftOperator) {
+    ostringstream oss;
+    oss << rrset_a;
+    EXPECT_EQ(rrset_a.toText(), oss.str());
+}
+
+class RRsetRRSIGTest : public ::testing::Test {
+protected:
+    RRsetRRSIGTest() : test_name("test.example.com")
+    {
+        rrset_a = RRsetPtr(new RRset(test_name, RRClass::IN(),
+                                     RRType::A(), RRTTL(3600)));
+        rrset_a->addRdata(in::A("192.0.2.1"));
+        rrset_a->addRdata(in::A("192.0.2.2"));
+
+        rrset_aaaa = RRsetPtr(new RRset(test_name, RRClass::IN(),
+                                        RRType::AAAA(), RRTTL(3600)));
+        rrset_aaaa->addRdata(in::AAAA("2001:db8::1234"));
+
+        rrset_rrsig = RRsetPtr(new RRset(test_name, RRClass::IN(),
+                                         RRType::RRSIG(), RRTTL(3600)));
+        rrset_rrsig->addRdata(generic::RRSIG("AAAA 5 3 7200 20100322084538 "
+                                             "20100220084538 1 example.com. "
+                                             "FAKEFAKEFAKEFAKE"));
+        rrset_aaaa->addRRsig(rrset_rrsig);
+    }
+
+    const Name test_name;
+    RRsetPtr rrset_a;           // A RRset with two RDATAs
+    RRsetPtr rrset_aaaa;        // AAAA RRset with one RDATA with RRSIG
+    RRsetPtr rrset_rrsig;       // RRSIG for the AAAA RRset
+};
+
+TEST_F(RRsetRRSIGTest, getRRsig) {
+    RRsetPtr sp = rrset_a->getRRsig();
+    EXPECT_EQ(static_cast<void*>(NULL), sp.get());
+
+    sp = rrset_aaaa->getRRsig();
+    EXPECT_NE(static_cast<void*>(NULL), sp.get());
+}
+
+TEST_F(RRsetRRSIGTest, addRRsig) {
+    RRsetPtr sp = rrset_a->getRRsig();
+    EXPECT_EQ(static_cast<void*>(NULL), sp.get());
+
+    rrset_rrsig = RRsetPtr(new RRset(test_name, RRClass::IN(),
+                                     RRType::RRSIG(), RRTTL(3600)));
+    // one signature algorithm (5 = RSA/SHA-1)
+    rrset_rrsig->addRdata(generic::RRSIG("A 5 3 3600 "
+                                         "20000101000000 20000201000000 "
+                                         "12345 example.com. FAKEFAKEFAKE"));
+    // another signature algorithm (3 = DSA/SHA-1)
+    rrset_rrsig->addRdata(generic::RRSIG("A 3 3 3600 "
+                                         "20000101000000 20000201000000 "
+                                         "12345 example.com. FAKEFAKEFAKE"));
+    rrset_a->addRRsig(rrset_rrsig);
+
+    sp = rrset_a->getRRsig();
+    EXPECT_NE(static_cast<void*>(NULL), sp.get());
+    EXPECT_EQ(2, sp->getRdataCount());
+
+    // add to existing RRSIG
+    rrset_rrsig = RRsetPtr(new RRset(test_name, RRClass::IN(),
+                                     RRType::RRSIG(), RRTTL(3600)));
+    // another signature algorithm (4 = ECC)
+    rrset_rrsig->addRdata(generic::RRSIG("A 4 3 3600 "
+                                         "20000101000000 20000201000000 "
+                                         "12345 example.com. FAKEFAKEFAKE"));
+    rrset_a->addRRsig(rrset_rrsig);
+    EXPECT_EQ(3, sp->getRdataCount());
+}
+
+TEST_F(RRsetRRSIGTest, getRRsigDataCount) {
+    EXPECT_EQ(1, rrset_aaaa->getRRsigDataCount());
+    EXPECT_EQ(0, rrset_a->getRRsigDataCount());
+
+    rrset_rrsig = RRsetPtr(new RRset(test_name, RRClass::IN(),
+                                     RRType::RRSIG(), RRTTL(3600)));
+    // one signature algorithm (5 = RSA/SHA-1)
+    rrset_rrsig->addRdata(generic::RRSIG("A 5 3 3600 "
+                                         "20000101000000 20000201000000 "
+                                         "12345 example.com. FAKEFAKEFAKE"));
+    // another signature algorithm (3 = DSA/SHA-1)
+    rrset_rrsig->addRdata(generic::RRSIG("A 3 3 3600 "
+                                         "20000101000000 20000201000000 "
+                                         "12345 example.com. FAKEFAKEFAKE"));
+    rrset_a->addRRsig(rrset_rrsig);
+    EXPECT_EQ(2, rrset_a->getRRsigDataCount());
+
+    rrset_a->removeRRsig();
+    EXPECT_EQ(0, rrset_a->getRRsigDataCount());
+}
+
+TEST_F(RRsetRRSIGTest, toText) {
+    // toText() should also return the associated RRSIG.
+    EXPECT_EQ("test.example.com. 3600 IN AAAA 2001:db8::1234\n"
+              "test.example.com. 3600 IN RRSIG AAAA 5 3 7200 "
+              "20100322084538 20100220084538 1 example.com. FAKEFAKEFAKEFAKE\n",
+              rrset_aaaa->toText());
+}
+
+TEST_F(RRsetRRSIGTest, getLength) {
+    // A RR
+    // test.example.com = 1 + 4 + 1 + 7 + 1 + 3 + 1 = 18 octets
+    // TYPE field = 2 octets
+    // CLASS field = 2 octets
+    // TTL field = 4 octets
+    // RDLENGTH field = 2 octets
+    // A RDATA = 4 octets
+    // Total = 18 + 2 + 2 + 4 + 2 + 4 = 32 octets
+
+    // 2 A RRs
+    EXPECT_EQ(32 + 32, rrset_a->getLength());
+
+    // RRSIG
+    // test.example.com = 1 + 4 + 1 + 7 + 1 + 3 + 1 = 18 octets
+    // TYPE field = 2 octets
+    // CLASS field = 2 octets
+    // TTL field = 4 octets
+    // RDLENGTH field = 2 octets
+    // RRSIG RDATA = 40 octets
+    // Total = 18 + 2 + 2 + 4 + 2 + 40 = 68 octets
+    RRsetPtr my_rrsig(new RRset(test_name, RRClass::IN(),
+                                RRType::RRSIG(), RRTTL(3600)));
+    my_rrsig->addRdata(generic::RRSIG("A 4 3 3600 "
+                                      "20000101000000 20000201000000 "
+                                      "12345 example.com. FAKEFAKEFAKE"));
+    EXPECT_EQ(68, my_rrsig->getLength());
+
+    // RRset with attached RRSIG
+    rrset_a->addRRsig(my_rrsig);
+
+    EXPECT_EQ(32 + 32 + 68, rrset_a->getLength());
+}
+}
diff --git a/src/lib/dns/tests/rrttl_unittest.cc b/src/lib/dns/tests/rrttl_unittest.cc
new file mode 100644
index 0000000..3cada14
--- /dev/null
+++ b/src/lib/dns/tests/rrttl_unittest.cc
@@ -0,0 +1,279 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <gtest/gtest.h>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/rrttl.h>
+
+#include <dns/tests/unittest_util.h>
+#include <util/unittests/wiredata.h>
+
+#include <boost/scoped_ptr.hpp>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using boost::scoped_ptr;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class RRTTLTest : public ::testing::Test {
+protected:
+    RRTTLTest() : obuffer(0) {}
+
+    OutputBuffer obuffer;
+    MessageRenderer renderer;
+
+    static RRTTL rrttlFactoryFromWire(const char* datafile);
+    static const RRTTL ttl_0, ttl_1h, ttl_1d, ttl_32bit, ttl_max;
+    static const RRTTL ttl_small, ttl_large;
+    static const uint8_t wiredata[20];
+};
+
+const RRTTL RRTTLTest::ttl_0(0);
+const RRTTL RRTTLTest::ttl_1h(3600);
+const RRTTL RRTTLTest::ttl_1d(86400);
+const RRTTL RRTTLTest::ttl_32bit(0x12345678);
+const RRTTL RRTTLTest::ttl_max(0xffffffff);
+
+const RRTTL RRTTLTest::ttl_small(1);
+const RRTTL RRTTLTest::ttl_large(0x80000001);
+// This is wire-format data for the above sample RRTTLs rendered in the
+// appearing order.
+const uint8_t RRTTLTest::wiredata[20] = { 0x00, 0x00, 0x00, 0x00,
+                                           0x00, 0x00, 0x0e, 0x10,
+                                           0x00, 0x01, 0x51, 0x80,
+                                           0x12, 0x34, 0x56, 0x78,
+                                           0xff, 0xff, 0xff, 0xff };
+
+RRTTL
+RRTTLTest::rrttlFactoryFromWire(const char* datafile) {
+    std::vector<unsigned char> data;
+    UnitTestUtil::readWireData(datafile, data);
+
+    InputBuffer buffer(&data[0], data.size());
+
+    return (RRTTL(buffer));
+}
+
+TEST_F(RRTTLTest, getValue) {
+    EXPECT_EQ(0, ttl_0.getValue());
+    EXPECT_EQ(3600, ttl_1h.getValue());
+    EXPECT_EQ(86400, ttl_1d.getValue());
+    EXPECT_EQ(0x12345678, ttl_32bit.getValue());
+    EXPECT_EQ(0xffffffff, ttl_max.getValue());
+}
+
+TEST_F(RRTTLTest, copyConstruct) {
+    const RRTTL ttl1(3600);
+    const RRTTL ttl2(ttl1);
+    EXPECT_EQ(ttl1.getValue(), ttl2.getValue());
+}
+
+TEST_F(RRTTLTest, fromText) {
+    // Border cases
+    EXPECT_EQ(0, RRTTL("0").getValue());
+    EXPECT_EQ(4294967295U, RRTTL("4294967295").getValue());
+
+    // Invalid cases
+    EXPECT_THROW(RRTTL("0xdeadbeef"), InvalidRRTTL); // must be decimal
+    EXPECT_THROW(RRTTL("-1"), InvalidRRTTL); // must be positive
+    EXPECT_THROW(RRTTL("1.1"), InvalidRRTTL); // must be integer
+    EXPECT_THROW(RRTTL("4294967296"), InvalidRRTTL); // must be 32-bit
+}
+
+TEST_F(RRTTLTest, createFromText) {
+    // It returns an actual RRTTL iff the given text is recognized as a
+    // valid RR TTL.
+    scoped_ptr<RRTTL> good_ttl(RRTTL::createFromText("3600"));
+    EXPECT_TRUE(good_ttl);
+    EXPECT_EQ(RRTTL(3600), *good_ttl);
+
+    scoped_ptr<RRTTL> bad_ttl(RRTTL::createFromText("bad"));
+    EXPECT_FALSE(bad_ttl);
+}
+
+void
+checkUnit(unsigned multiply, char suffix) {
+    SCOPED_TRACE(string("Unit check with suffix ") + suffix);
+    const uint32_t value = 10 * multiply;
+    const string num = "10";
+    // Check both lower and upper version of the suffix
+    EXPECT_EQ(value,
+              RRTTL(num + static_cast<char>(tolower(suffix))).getValue());
+    EXPECT_EQ(value,
+              RRTTL(num + static_cast<char>(toupper(suffix))).getValue());
+}
+
+// Check parsing the unit form (1D, etc)
+TEST_F(RRTTLTest, fromTextUnit) {
+    // Check each of the units separately
+    checkUnit(1, 'S');
+    checkUnit(60, 'M');
+    checkUnit(60 * 60, 'H');
+    checkUnit(24 * 60 * 60, 'D');
+    checkUnit(7 * 24 * 60 * 60, 'W');
+
+    // Some border cases (with units)
+    EXPECT_EQ(4294967295U, RRTTL("4294967295S").getValue());
+    EXPECT_EQ(0, RRTTL("0W0D0H0M0S").getValue());
+    EXPECT_EQ(4294967295U, RRTTL("1193046H1695S").getValue());
+    // Leading zeroes are accepted
+    EXPECT_EQ(4294967295U, RRTTL("0000000000000004294967295S").getValue());
+
+    // Now some compound ones. We allow any order (it would be much work to
+    // check the order anyway).
+    EXPECT_EQ(60 * 60 + 3, RRTTL("1H3S").getValue());
+
+    // Awkward, but allowed case - the same unit used twice.
+    EXPECT_EQ(20 * 3600, RRTTL("12H8H").getValue());
+
+    // Negative number in part of the expression, but the total is positive.
+    // Rejected.
+    EXPECT_THROW(RRTTL("-1S1H"), InvalidRRTTL);
+
+    // Some things out of range in the ttl, but it wraps to number in range
+    // in int64_t. Should still not get fooled and reject it.
+
+    // First part out of range
+    EXPECT_THROW(RRTTL("9223372036854775807S9223372036854775807S2S"),
+                 InvalidRRTTL);
+    // Second part out of range, but it immediately wraps (2S+2^64-2S)
+    EXPECT_THROW(RRTTL("2S18446744073709551614S"), InvalidRRTTL);
+    // The whole thing wraps right away (2^64S)
+    EXPECT_THROW(RRTTL("18446744073709551616S"), InvalidRRTTL);
+    // Second part out of range, and will become negative with the unit,
+    EXPECT_THROW(RRTTL("256S307445734561825856M"), InvalidRRTTL);
+
+    // Missing before unit.
+    EXPECT_THROW(RRTTL("W5H"), InvalidRRTTL);
+    EXPECT_THROW(RRTTL("5hW"), InvalidRRTTL);
+
+    // Empty string is not allowed
+    EXPECT_THROW(RRTTL(""), InvalidRRTTL);
+    // Missing the last unit is not allowed
+    EXPECT_THROW(RRTTL("3D5"), InvalidRRTTL);
+
+    // There are some wrong units
+    EXPECT_THROW(RRTTL("13X"), InvalidRRTTL);
+    EXPECT_THROW(RRTTL("3D5F"), InvalidRRTTL);
+}
+
+TEST_F(RRTTLTest, fromWire) {
+    EXPECT_EQ(0x12345678,
+              rrttlFactoryFromWire("rrcode32_fromWire1").getValue());
+    EXPECT_THROW(rrttlFactoryFromWire("rrcode32_fromWire2"),
+                 IncompleteRRTTL);
+}
+
+TEST_F(RRTTLTest, toText) {
+    EXPECT_EQ("0", ttl_0.toText());
+    EXPECT_EQ("3600", ttl_1h.toText());
+    EXPECT_EQ("86400", ttl_1d.toText());
+    EXPECT_EQ("305419896", ttl_32bit.toText());
+    EXPECT_EQ("4294967295", ttl_max.toText());
+}
+
+TEST_F(RRTTLTest, toWireBuffer) {
+    ttl_0.toWire(obuffer);
+    ttl_1h.toWire(obuffer);
+    ttl_1d.toWire(obuffer);
+    ttl_32bit.toWire(obuffer);
+    ttl_max.toWire(obuffer);
+
+    matchWireData(wiredata, sizeof(wiredata),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(RRTTLTest, toWireRenderer) {
+    ttl_0.toWire(renderer);
+    ttl_1h.toWire(renderer);
+    ttl_1d.toWire(renderer);
+    ttl_32bit.toWire(renderer);
+    ttl_max.toWire(renderer);
+
+    matchWireData(wiredata, sizeof(wiredata),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(RRTTLTest, equal) {
+    EXPECT_TRUE(RRTTL("3600") == ttl_1h);
+    EXPECT_TRUE(RRTTL("86400").equals(ttl_1d));
+
+    EXPECT_TRUE(ttl_1d != ttl_1h);
+    EXPECT_TRUE(ttl_1d.nequals(ttl_max));
+}
+
+//
+// The following set of tests confirm the result of <=, <, >=, >
+// The test logic is simple, and all tests are just straightforward variations
+// of the first one.
+//
+TEST_F(RRTTLTest, leq) {
+    // small <= large is true
+    EXPECT_TRUE(ttl_small.leq(ttl_large));
+    EXPECT_TRUE(ttl_small <= ttl_large);
+
+    // small <= small is true
+    EXPECT_TRUE(ttl_small.leq(ttl_small));
+    EXPECT_LE(ttl_small, ttl_small);
+
+    // large <= small is false
+    EXPECT_FALSE(ttl_large.leq(ttl_small));
+    EXPECT_FALSE(ttl_large <= ttl_small);
+}
+
+TEST_F(RRTTLTest, geq) {
+    EXPECT_TRUE(ttl_large.geq(ttl_small));
+    EXPECT_TRUE(ttl_large >= ttl_small);
+
+    EXPECT_TRUE(ttl_large.geq(ttl_large));
+    EXPECT_GE(ttl_large, ttl_large);
+
+    EXPECT_FALSE(ttl_small.geq(ttl_large));
+    EXPECT_FALSE(ttl_small >= ttl_large);
+}
+
+TEST_F(RRTTLTest, lthan) {
+    EXPECT_TRUE(ttl_small.lthan(ttl_large));
+    EXPECT_TRUE(ttl_small < ttl_large);
+
+    EXPECT_FALSE(ttl_small.lthan(ttl_small));
+    // cppcheck-suppress duplicateExpression
+    EXPECT_FALSE(ttl_small < ttl_small);
+
+    EXPECT_FALSE(ttl_large.lthan(ttl_small));
+    EXPECT_FALSE(ttl_large < ttl_small);
+}
+
+TEST_F(RRTTLTest, gthan) {
+    EXPECT_TRUE(ttl_large.gthan(ttl_small));
+    EXPECT_TRUE(ttl_large > ttl_small);
+
+    EXPECT_FALSE(ttl_large.gthan(ttl_large));
+    // cppcheck-suppress duplicateExpression
+    EXPECT_FALSE(ttl_large > ttl_large);
+
+    EXPECT_FALSE(ttl_small.gthan(ttl_large));
+    EXPECT_FALSE(ttl_small > ttl_large);
+}
+
+TEST_F(RRTTLTest, maxTTL) {
+    EXPECT_EQ((1u << 31) - 1, RRTTL::MAX_TTL().getValue());
+}
+
+// test operator<<.  We simply confirm it appends the result of toText().
+TEST_F(RRTTLTest, LeftShiftOperator) {
+    ostringstream oss;
+    oss << ttl_1h;
+    EXPECT_EQ(ttl_1h.toText(), oss.str());
+}
+}
diff --git a/src/lib/dns/tests/rrtype_unittest.cc b/src/lib/dns/tests/rrtype_unittest.cc
new file mode 100644
index 0000000..a2f8ba5
--- /dev/null
+++ b/src/lib/dns/tests/rrtype_unittest.cc
@@ -0,0 +1,195 @@
+// Copyright (C) 2010-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <gtest/gtest.h>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/rrtype.h>
+
+#include <dns/tests/unittest_util.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class RRTypeTest : public ::testing::Test {
+protected:
+    RRTypeTest() : obuffer(0) {}
+
+    OutputBuffer obuffer;
+    MessageRenderer renderer;
+
+    static RRType rrtypeFactoryFromWire(const char* datafile);
+    static const RRType rrtype_1, rrtype_0x80, rrtype_0x800, rrtype_0x8000,
+        rrtype_max;
+    static const uint8_t wiredata[];
+};
+
+const RRType RRTypeTest::rrtype_1(1);
+const RRType RRTypeTest::rrtype_0x80(0x80);
+const RRType RRTypeTest::rrtype_0x800(0x800);
+const RRType RRTypeTest::rrtype_0x8000(0x8000);
+const RRType RRTypeTest::rrtype_max(0xffff);
+// This is wire-format data for the above sample RRTypes rendered in the
+// appearing order.
+const uint8_t RRTypeTest::wiredata[] = { 0x00, 0x01, 0x00, 0x80, 0x08,
+                                         0x00, 0x80, 0x00, 0xff, 0xff };
+
+RRType
+RRTypeTest::rrtypeFactoryFromWire(const char* datafile) {
+    std::vector<unsigned char> data;
+    UnitTestUtil::readWireData(datafile, data);
+
+    InputBuffer buffer(&data[0], data.size());
+
+    return (RRType(buffer));
+}
+
+TEST_F(RRTypeTest, fromText) {
+    EXPECT_EQ("A", RRType("A").toText());
+    EXPECT_EQ("NS", RRType("NS").toText());
+
+    EXPECT_EQ("TYPE65535", RRType("TYPE65535").toText());
+
+    // something unusual, but existing implementations accept this form,
+    // so do we.
+    EXPECT_EQ(53, RRType("TYPE00053").getCode());
+    // again, unusual, and the majority of other implementations reject it.
+    // In any case, there should be no reasonable reason to accept such a
+    // ridiculously long input.
+    EXPECT_THROW(RRType("TYPE000053"), InvalidRRType);
+
+    // bogus TYPEnnn representations: should trigger an exception
+    EXPECT_THROW(RRType("TYPE"), InvalidRRType);
+    EXPECT_THROW(RRType("TYPE-1"), InvalidRRType);
+    EXPECT_THROW(RRType("TYPExxx"), InvalidRRType);
+    EXPECT_THROW(RRType("TYPE65536"), InvalidRRType);
+    EXPECT_THROW(RRType("TYPE6500x"), InvalidRRType);
+    EXPECT_THROW(RRType("TYPE65000 "), InvalidRRType);
+}
+
+TEST_F(RRTypeTest, fromWire) {
+    EXPECT_EQ(0x1234,
+              rrtypeFactoryFromWire("rrcode16_fromWire1").getCode());
+    EXPECT_THROW(rrtypeFactoryFromWire("rrcode16_fromWire2"), IncompleteRRType);
+}
+
+// from string, lower case
+TEST_F(RRTypeTest, caseConstruct) {
+    EXPECT_EQ("A", RRType("a").toText());
+    EXPECT_EQ("NS", RRType("ns").toText());
+    EXPECT_EQ("TYPE65535", RRType("type65535").toText());
+}
+
+TEST_F(RRTypeTest, toText) {
+    EXPECT_EQ("A", RRType(1).toText());
+    EXPECT_EQ("TYPE65000", RRType(65000).toText());
+}
+
+TEST_F(RRTypeTest, toWireBuffer) {
+    rrtype_1.toWire(obuffer);
+    rrtype_0x80.toWire(obuffer);
+    rrtype_0x800.toWire(obuffer);
+    rrtype_0x8000.toWire(obuffer);
+    rrtype_max.toWire(obuffer);
+
+    matchWireData(wiredata, sizeof(wiredata),
+                  obuffer.getData(), obuffer.getLength());
+}
+
+TEST_F(RRTypeTest, toWireRenderer) {
+    rrtype_1.toWire(renderer);
+    rrtype_0x80.toWire(renderer);
+    rrtype_0x800.toWire(renderer);
+    rrtype_0x8000.toWire(renderer);
+    rrtype_max.toWire(renderer);
+
+    matchWireData(wiredata, sizeof(wiredata),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(RRTypeTest, wellKnownTypes) {
+    EXPECT_EQ(1, RRType::A().getCode());
+    EXPECT_EQ("A", RRType::A().toText());
+}
+
+TEST_F(RRTypeTest, compare) {
+    EXPECT_TRUE(RRType(1) == RRType("A"));
+    EXPECT_TRUE(RRType(1).equals(RRType("A")));
+    EXPECT_TRUE(RRType(0) != RRType("A"));
+    EXPECT_TRUE(RRType(0).nequals(RRType("A")));
+
+    EXPECT_TRUE(RRType("A") < RRType("NS"));
+    EXPECT_TRUE(RRType(100) < RRType(65535));
+}
+
+// test operator<<.  We simply confirm it appends the result of toText().
+TEST_F(RRTypeTest, LeftShiftOperator) {
+    ostringstream oss;
+    oss << RRType::A();
+    EXPECT_EQ(RRType::A().toText(), oss.str());
+}
+
+// Below, we'll check definitions for all well-known RR types; whether they
+// are defined and have the correct parameter values.  Test data are generated
+// from the list available at:
+// http://www.iana.org/assignments/dns-parameters/dns-parameters.xml
+struct TypeParam {
+    const char* const txt;      // "A", "AAAA", "NS", etc
+    const uint16_t code;        // 1, 28, 2, etc
+    const RRType& (*obj)();     // RRType::A(), etc
+} known_types[] = {
+    {"A", 1, RRType::A}, {"NS", 2, RRType::NS}, {"MD", 3, RRType::MD},
+    {"MF", 4, RRType::MF}, {"CNAME", 5, RRType::CNAME},
+    {"SOA", 6, RRType::SOA}, {"MB", 7, RRType::MB}, {"MG", 8, RRType::MG},
+    {"MR", 9, RRType::MR}, {"NULL", 10, RRType::Null},
+    {"WKS", 11, RRType::WKS}, {"PTR", 12, RRType::PTR},
+    {"HINFO", 13, RRType::HINFO}, {"MINFO", 14, RRType::MINFO},
+    {"MX", 15, RRType::MX}, {"TXT", 16, RRType::TXT}, {"RP", 17, RRType::RP},
+    {"AFSDB", 18, RRType::AFSDB}, {"X25", 19, RRType::X25},
+    {"ISDN", 20, RRType::ISDN}, {"RT", 21, RRType::RT},
+    {"NSAP", 22, RRType::NSAP}, {"NSAP-PTR", 23, RRType::NSAP_PTR},
+    {"SIG", 24, RRType::SIG}, {"KEY", 25, RRType::KEY},
+    {"PX", 26, RRType::PX}, {"GPOS", 27, RRType::GPOS},
+    {"AAAA", 28, RRType::AAAA}, {"LOC", 29, RRType::LOC},
+    {"NXT", 30, RRType::NXT}, {"SRV", 33, RRType::SRV},
+    {"NAPTR", 35, RRType::NAPTR}, {"KX", 36, RRType::KX},
+    {"CERT", 37, RRType::CERT}, {"A6", 38, RRType::A6},
+    {"DNAME", 39, RRType::DNAME}, {"OPT", 41, RRType::OPT},
+    {"APL", 42, RRType::APL}, {"DS", 43, RRType::DS},
+    {"SSHFP", 44, RRType::SSHFP}, {"IPSECKEY", 45, RRType::IPSECKEY},
+    {"RRSIG", 46, RRType::RRSIG}, {"NSEC", 47, RRType::NSEC},
+    {"DNSKEY", 48, RRType::DNSKEY}, {"DHCID", 49, RRType::DHCID},
+    {"NSEC3", 50, RRType::NSEC3}, {"NSEC3PARAM", 51, RRType::NSEC3PARAM},
+    {"TLSA", 52, RRType::TLSA}, {"HIP", 55, RRType::HIP},
+    {"SPF", 99, RRType::SPF}, {"UNSPEC", 103, RRType::UNSPEC},
+    {"NID", 104, RRType::NID}, {"L32", 105, RRType::L32},
+    {"L64", 106, RRType::L64}, {"LP", 107, RRType::LP},
+    {"TKEY", 249, RRType::TKEY}, {"TSIG", 250, RRType::TSIG},
+    {"IXFR", 251, RRType::IXFR}, {"AXFR", 252, RRType::AXFR},
+    {"MAILB", 253, RRType::MAILB}, {"MAILA", 254, RRType::MAILA},
+    {"ANY", 255, RRType::ANY}, {"URI", 256, RRType::URI},
+    {"CAA", 257, RRType::CAA}, {"DLV", 32769, RRType::DLV},
+    {NULL, 0, NULL}
+};
+
+TEST(RRTypeConstTest, wellKnowns) {
+    for (int i = 0; known_types[i].txt; ++i) {
+        SCOPED_TRACE("Checking well known RRType: " +
+                     string(known_types[i].txt));
+        EXPECT_EQ(known_types[i].code, RRType(known_types[i].txt).getCode());
+        EXPECT_EQ(known_types[i].code,
+                  (*known_types[i].obj)().getCode());
+    }
+}
+}
diff --git a/src/lib/dns/tests/run_unittests.cc b/src/lib/dns/tests/run_unittests.cc
new file mode 100644
index 0000000..de396fa
--- /dev/null
+++ b/src/lib/dns/tests/run_unittests.cc
@@ -0,0 +1,24 @@
+// Copyright (C) 2009-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <gtest/gtest.h>
+#include <util/unittests/run_all.h>
+
+#include <util/unittests/testdata.h>
+#include <dns/tests/unittest_util.h>
+
+int
+main(int argc, char* argv[]) {
+    ::testing::InitGoogleTest(&argc, argv);
+    isc::UnitTestUtil::addDataPath(TEST_DATA_SRCDIR);
+    isc::util::unittests::addTestDataPath(TEST_DATA_SRCDIR);
+    isc::UnitTestUtil::addDataPath(TEST_DATA_BUILDDIR);
+    isc::util::unittests::addTestDataPath(TEST_DATA_BUILDDIR);
+
+    return (isc::util::unittests::run_all());
+}
diff --git a/src/lib/dns/tests/serial_unittest.cc b/src/lib/dns/tests/serial_unittest.cc
new file mode 100644
index 0000000..305b0b0
--- /dev/null
+++ b/src/lib/dns/tests/serial_unittest.cc
@@ -0,0 +1,173 @@
+// Copyright (C) 2011-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <gtest/gtest.h>
+
+#include <dns/serial.h>
+
+using namespace isc::dns;
+
+class SerialTest : public ::testing::Test {
+public:
+    SerialTest() : one(1), one_2(1), two(2),
+                   date_zero(1980120100), date_one(1980120101),
+                   min(0), max(4294967295u),
+                   number_low(12345),
+                   number_medium(2000000000),
+                   number_high(4000000000u)
+    {}
+    Serial one, one_2, two, date_zero, date_one, min, max, number_low, number_medium, number_high;
+};
+
+//
+// Basic tests
+//
+
+TEST_F(SerialTest, get_value) {
+    EXPECT_EQ(1, one.getValue());
+    EXPECT_NE(2, one.getValue());
+    EXPECT_EQ(2, two.getValue());
+    EXPECT_EQ(1980120100, date_zero.getValue());
+    EXPECT_EQ(1980120101, date_one.getValue());
+    EXPECT_EQ(0, min.getValue());
+    EXPECT_EQ(4294967295u, max.getValue());
+    EXPECT_EQ(12345, number_low.getValue());
+    EXPECT_EQ(2000000000, number_medium.getValue());
+    EXPECT_EQ(4000000000u, number_high.getValue());
+}
+
+TEST_F(SerialTest, equals) {
+    EXPECT_EQ(one, one);
+    EXPECT_EQ(one, one_2);
+    EXPECT_NE(one, two);
+    EXPECT_NE(two, one);
+    EXPECT_EQ(Serial(12345), number_low);
+    EXPECT_NE(Serial(12346), number_low);
+}
+
+TEST_F(SerialTest, comparison) {
+    // These should be true/false even without serial arithmetic
+    EXPECT_LE(one, one);
+    EXPECT_LE(one, one_2);
+    EXPECT_LT(one, two);
+    EXPECT_LE(one, two);
+    EXPECT_GE(two, two);
+    EXPECT_GT(two, one);
+    EXPECT_GE(two, one);
+    EXPECT_LT(one, number_low);
+    EXPECT_LT(number_low, number_medium);
+    EXPECT_LT(number_medium, number_high);
+
+    // now let's try some that 'wrap', as it were
+    EXPECT_GT(min, max);
+    EXPECT_LT(max, min);
+    EXPECT_LT(number_high, number_low);
+}
+
+//
+// RFC 1982 Section 3.1
+//
+TEST_F(SerialTest, addition) {
+    EXPECT_EQ(two, one + one);
+    EXPECT_EQ(two, one + one_2);
+    EXPECT_EQ(max, max + min);
+    EXPECT_EQ(min, max + one);
+    EXPECT_EQ(one, max + two);
+    EXPECT_EQ(one, max + one + one);
+
+    EXPECT_EQ(one + 100, max + 102);
+    EXPECT_EQ(min + 2147483645, max + 2147483646);
+    EXPECT_EQ(min + 2147483646, max + MAX_SERIAL_INCREMENT);
+}
+
+//
+// RFC 1982 Section 3.2 has been checked by the basic tests above
+//
+
+//
+// RFC 1982 Section 4.1
+//
+
+// Helper function for addition_always_larger test, add some numbers
+// and check that the result is always larger than the original
+void do_addition_larger_test(const Serial& number) {
+    EXPECT_GE(number + 0, number);
+    EXPECT_EQ(number + 0, number);
+    EXPECT_GT(number + 1, number);
+    EXPECT_GT(number + 2, number);
+    EXPECT_GT(number + 100, number);
+    EXPECT_GT(number + 1111111, number);
+    EXPECT_GT(number + 2147483646, number);
+    EXPECT_GT(number + MAX_SERIAL_INCREMENT, number);
+    // Try MAX_SERIAL_INCREMENT as a hardcoded number as well
+    EXPECT_GT(number + 2147483647, number);
+}
+
+TEST_F(SerialTest, addition_always_larger) {
+    do_addition_larger_test(one);
+    do_addition_larger_test(two);
+    do_addition_larger_test(date_zero);
+    do_addition_larger_test(date_one);
+    do_addition_larger_test(min);
+    do_addition_larger_test(max);
+    do_addition_larger_test(number_low);
+    do_addition_larger_test(number_medium);
+    do_addition_larger_test(number_high);
+}
+
+//
+// RFC 1982 Section 4.2
+//
+
+// Helper function to do the second addition
+void
+do_two_additions_test_second(const Serial &original,
+                             const Serial &number)
+{
+    EXPECT_NE(original, number);
+    EXPECT_NE(original, number + 0);
+    EXPECT_NE(original, number + 1);
+    EXPECT_NE(original, number + 2);
+    EXPECT_NE(original, number + 100);
+    EXPECT_NE(original, number + 1111111);
+    EXPECT_NE(original, number + 2147483646);
+    EXPECT_NE(original, number + MAX_SERIAL_INCREMENT);
+    EXPECT_NE(original, number + 2147483647);
+}
+
+void do_two_additions_test_first(const Serial &number) {
+    do_two_additions_test_second(number, number + 1);
+    do_two_additions_test_second(number, number + 2);
+    do_two_additions_test_second(number, number + 100);
+    do_two_additions_test_second(number, number + 1111111);
+    do_two_additions_test_second(number, number + 2147483646);
+    do_two_additions_test_second(number, number + MAX_SERIAL_INCREMENT);
+    do_two_additions_test_second(number, number + 2147483647);
+}
+
+TEST_F(SerialTest, two_additions_never_equal) {
+    do_two_additions_test_first(one);
+    do_two_additions_test_first(two);
+    do_two_additions_test_first(date_zero);
+    do_two_additions_test_first(date_one);
+    do_two_additions_test_first(min);
+    do_two_additions_test_first(max);
+    do_two_additions_test_first(number_low);
+    do_two_additions_test_first(number_medium);
+    do_two_additions_test_first(number_high);
+}
+
+//
+// RFC 1982 Section 4.3 and 4.4 have nothing to test
+//
+
+//
+// Tests from RFC 1982 examples
+//
+TEST(SerialTextRFCExamples, rfc_example_tests) {
+}
diff --git a/src/lib/dns/tests/testdata/Makefile.am b/src/lib/dns/tests/testdata/Makefile.am
new file mode 100644
index 0000000..e5c8081
--- /dev/null
+++ b/src/lib/dns/tests/testdata/Makefile.am
@@ -0,0 +1,219 @@
+CLEANFILES =
+
+# NOTE: keep this in sync with real file listing
+# so is included in tarball
+EXTRA_DIST = edns_toWire1.spec edns_toWire2.spec
+EXTRA_DIST += edns_toWire3.spec edns_toWire4.spec
+EXTRA_DIST += masterload.txt
+EXTRA_DIST += message_fromWire1 message_fromWire2
+EXTRA_DIST += message_fromWire3 message_fromWire4
+EXTRA_DIST += message_fromWire5 message_fromWire6
+EXTRA_DIST += message_fromWire7 message_fromWire8
+EXTRA_DIST += message_fromWire9 message_fromWire10.spec
+EXTRA_DIST += message_fromWire11.spec message_fromWire12.spec
+EXTRA_DIST += message_fromWire13.spec message_fromWire14.spec
+EXTRA_DIST += message_fromWire15.spec message_fromWire16.spec
+EXTRA_DIST += message_fromWire17.spec message_fromWire18.spec
+EXTRA_DIST += message_fromWire19.spec message_fromWire20.spec
+EXTRA_DIST += message_fromWire21.spec message_fromWire22.spec
+EXTRA_DIST += message_toWire1 message_toWire2.spec message_toWire3.spec
+EXTRA_DIST += message_toWire4.spec message_toWire5.spec
+EXTRA_DIST += message_toWire6 message_toWire7
+EXTRA_DIST += message_toText1.txt message_toText1.spec
+EXTRA_DIST += message_toText2.txt message_toText2.spec
+EXTRA_DIST += message_toText3.txt message_toText3.spec
+EXTRA_DIST += name_fromWire1 name_fromWire2 name_fromWire3_1 name_fromWire3_2
+EXTRA_DIST += name_fromWire4 name_fromWire6 name_fromWire7 name_fromWire8
+EXTRA_DIST += name_fromWire9 name_fromWire10 name_fromWire11 name_fromWire12
+EXTRA_DIST += name_fromWire13 name_fromWire14
+EXTRA_DIST += name_toWire1 name_toWire2 name_toWire3 name_toWire4
+EXTRA_DIST += name_toWire5.spec name_toWire6.spec
+EXTRA_DIST += name_toWire7 name_toWire8 name_toWire9
+EXTRA_DIST += question_fromWire question_toWire1 question_toWire2
+EXTRA_DIST += rdatafields1.spec rdatafields2.spec rdatafields3.spec
+EXTRA_DIST += rdatafields4.spec rdatafields5.spec rdatafields6.spec
+EXTRA_DIST += rdata_cname_fromWire rdata_dname_fromWire
+EXTRA_DIST += rdata_dnskey_fromWire.spec rdata_dnskey_empty_keydata_fromWire.spec
+EXTRA_DIST += rdata_dhcid_fromWire rdata_dhcid_toWire
+EXTRA_DIST += rdata_ds_fromWire rdata_in_a_fromWire rdata_in_aaaa_fromWire
+EXTRA_DIST += rdata_mx_fromWire rdata_mx_toWire1 rdata_mx_toWire2
+EXTRA_DIST += rdata_ns_fromWire
+EXTRA_DIST += rdata_nsec_fromWire1 rdata_nsec_fromWire2 rdata_nsec_fromWire3
+EXTRA_DIST += rdata_nsec_fromWire4.spec rdata_nsec_fromWire5.spec
+EXTRA_DIST += rdata_nsec_fromWire6.spec rdata_nsec_fromWire7.spec
+EXTRA_DIST += rdata_nsec_fromWire8.spec rdata_nsec_fromWire9.spec
+EXTRA_DIST += rdata_nsec_fromWire10.spec
+EXTRA_DIST += rdata_nsec_fromWire16.spec
+EXTRA_DIST += rdata_nsec3param_fromWire1
+EXTRA_DIST += rdata_nsec3param_fromWire2.spec
+EXTRA_DIST += rdata_nsec3param_fromWire11.spec
+EXTRA_DIST += rdata_nsec3param_fromWire13.spec
+EXTRA_DIST += rdata_nsec3_fromWire1 rdata_nsec3_fromWire1.spec
+EXTRA_DIST += rdata_nsec3_fromWire2.spec rdata_nsec3_fromWire3
+EXTRA_DIST += rdata_nsec3_fromWire4.spec rdata_nsec3_fromWire5.spec
+EXTRA_DIST += rdata_nsec3_fromWire6.spec rdata_nsec3_fromWire7.spec
+EXTRA_DIST += rdata_nsec3_fromWire8.spec rdata_nsec3_fromWire9.spec
+EXTRA_DIST += rdata_nsec3_fromWire10.spec rdata_nsec3_fromWire11.spec
+EXTRA_DIST += rdata_nsec3_fromWire12.spec rdata_nsec3_fromWire13.spec
+EXTRA_DIST += rdata_nsec3_fromWire14.spec rdata_nsec3_fromWire15.spec
+EXTRA_DIST += rdata_nsec3_fromWire16.spec rdata_nsec3_fromWire17.spec
+EXTRA_DIST += rdata_opt_fromWire1 rdata_opt_fromWire2
+EXTRA_DIST += rdata_opt_fromWire3 rdata_opt_fromWire4
+EXTRA_DIST += rdata_rrsig_fromWire1
+EXTRA_DIST += rdata_rrsig_fromWire2.spec
+EXTRA_DIST += rdata_rp_fromWire1.spec rdata_rp_fromWire2.spec
+EXTRA_DIST += rdata_rp_fromWire3.spec rdata_rp_fromWire4.spec
+EXTRA_DIST += rdata_rp_fromWire5.spec rdata_rp_fromWire6.spec
+EXTRA_DIST += rdata_rp_toWire1.spec rdata_rp_toWire2.spec
+EXTRA_DIST += rdata_sshfp_fromWire rdata_sshfp_fromWire2
+EXTRA_DIST += rdata_sshfp_fromWire1.spec rdata_sshfp_fromWire2.spec
+EXTRA_DIST += rdata_sshfp_fromWire3.spec rdata_sshfp_fromWire4.spec
+EXTRA_DIST += rdata_sshfp_fromWire5.spec rdata_sshfp_fromWire6.spec
+EXTRA_DIST += rdata_sshfp_fromWire7.spec rdata_sshfp_fromWire8.spec
+EXTRA_DIST += rdata_sshfp_fromWire9 rdata_sshfp_fromWire10
+EXTRA_DIST += rdata_sshfp_fromWire11 rdata_sshfp_fromWire12
+EXTRA_DIST += rdata_afsdb_fromWire1.spec rdata_afsdb_fromWire2.spec
+EXTRA_DIST += rdata_afsdb_fromWire3.spec rdata_afsdb_fromWire4.spec
+EXTRA_DIST += rdata_afsdb_fromWire5.spec
+EXTRA_DIST += rdata_afsdb_toWire1.spec rdata_afsdb_toWire2.spec
+EXTRA_DIST += rdata_soa_fromWire rdata_soa_toWireUncompressed.spec
+EXTRA_DIST += rdata_srv_fromWire
+EXTRA_DIST += rdata_minfo_fromWire1.spec rdata_minfo_fromWire2.spec
+EXTRA_DIST += rdata_minfo_fromWire3.spec rdata_minfo_fromWire4.spec
+EXTRA_DIST += rdata_minfo_fromWire5.spec rdata_minfo_fromWire6.spec
+EXTRA_DIST += rdata_minfo_toWire1.spec rdata_minfo_toWire2.spec
+EXTRA_DIST += rdata_minfo_toWireUncompressed1.spec
+EXTRA_DIST += rdata_minfo_toWireUncompressed2.spec
+EXTRA_DIST += rdata_txt_fromWire1 rdata_txt_fromWire2.spec
+EXTRA_DIST += rdata_txt_fromWire3.spec rdata_txt_fromWire4.spec
+EXTRA_DIST += rdata_txt_fromWire5.spec rdata_unknown_fromWire
+EXTRA_DIST += rrcode16_fromWire1 rrcode16_fromWire2
+EXTRA_DIST += rrcode32_fromWire1 rrcode32_fromWire2
+EXTRA_DIST += rrset_toWire1 rrset_toWire2
+EXTRA_DIST += rrset_toWire3 rrset_toWire4
+EXTRA_DIST += rdata_tkey_fromWire1.spec rdata_tkey_fromWire2.spec
+EXTRA_DIST += rdata_tkey_fromWire3.spec rdata_tkey_fromWire4.spec
+EXTRA_DIST += rdata_tkey_fromWire5.spec rdata_tkey_fromWire6.spec
+EXTRA_DIST += rdata_tkey_fromWire7.spec rdata_tkey_fromWire8.spec
+EXTRA_DIST += rdata_tkey_fromWire9.spec
+EXTRA_DIST += rdata_tkey_toWire1.spec rdata_tkey_toWire2.spec
+EXTRA_DIST += rdata_tkey_toWire3.spec rdata_tkey_toWire4.spec
+EXTRA_DIST += rdata_tkey_toWire5.spec
+EXTRA_DIST += rdata_tlsa_fromWire rdata_tlsa_fromWire2
+EXTRA_DIST += rdata_tlsa_fromWire3.spec rdata_tlsa_fromWire4.spec
+EXTRA_DIST += rdata_tlsa_fromWire5.spec rdata_tlsa_fromWire6.spec
+EXTRA_DIST += rdata_tlsa_fromWire7.spec rdata_tlsa_fromWire8.spec
+EXTRA_DIST += rdata_tlsa_fromWire9 rdata_tlsa_fromWire10
+EXTRA_DIST += rdata_tlsa_fromWire11 rdata_tlsa_fromWire12
+EXTRA_DIST += rdata_tsig_fromWire1.spec rdata_tsig_fromWire2.spec
+EXTRA_DIST += rdata_tsig_fromWire3.spec rdata_tsig_fromWire4.spec
+EXTRA_DIST += rdata_tsig_fromWire5.spec rdata_tsig_fromWire6.spec
+EXTRA_DIST += rdata_tsig_fromWire7.spec rdata_tsig_fromWire8.spec
+EXTRA_DIST += rdata_tsig_fromWire9.spec
+EXTRA_DIST += rdata_tsig_toWire1.spec rdata_tsig_toWire2.spec
+EXTRA_DIST += rdata_tsig_toWire3.spec rdata_tsig_toWire4.spec
+EXTRA_DIST += rdata_tsig_toWire5.spec
+EXTRA_DIST += rdata_caa_fromWire1.spec rdata_caa_fromWire2.spec
+EXTRA_DIST += rdata_caa_fromWire3.spec rdata_caa_fromWire4.spec
+EXTRA_DIST += rdata_caa_fromWire5 rdata_caa_fromWire6
+EXTRA_DIST += tsigrecord_toWire1.spec tsigrecord_toWire2.spec
+EXTRA_DIST += tsig_verify1.spec tsig_verify2.spec tsig_verify3.spec
+EXTRA_DIST += tsig_verify4.spec tsig_verify5.spec tsig_verify6.spec
+EXTRA_DIST += tsig_verify7.spec tsig_verify8.spec tsig_verify9.spec
+EXTRA_DIST += tsig_verify10.spec tsig_verify11.spec
+EXTRA_DIST += example.org
+EXTRA_DIST += broken.zone
+EXTRA_DIST += origincheck.txt
+EXTRA_DIST += omitcheck.txt
+
+# Generated .wire files
+EXTRA_DIST += edns_toWire1.wire edns_toWire2.wire
+EXTRA_DIST += edns_toWire3.wire edns_toWire4.wire
+EXTRA_DIST += message_fromWire10.wire
+EXTRA_DIST += message_fromWire11.wire message_fromWire12.wire
+EXTRA_DIST += message_fromWire13.wire message_fromWire14.wire
+EXTRA_DIST += message_fromWire15.wire message_fromWire16.wire
+EXTRA_DIST += message_fromWire17.wire message_fromWire18.wire
+EXTRA_DIST += message_fromWire19.wire message_fromWire20.wire
+EXTRA_DIST += message_fromWire21.wire message_fromWire22.wire
+EXTRA_DIST += message_toWire1 message_toWire2.wire message_toWire3.wire
+EXTRA_DIST += message_toWire4.wire message_toWire5.wire
+EXTRA_DIST += message_toText1.txt message_toText1.wire
+EXTRA_DIST += message_toText2.txt message_toText2.wire
+EXTRA_DIST += message_toText3.txt message_toText3.wire
+EXTRA_DIST += name_toWire5.wire name_toWire6.wire
+EXTRA_DIST += rdatafields1.wire rdatafields2.wire rdatafields3.wire
+EXTRA_DIST += rdatafields4.wire rdatafields5.wire rdatafields6.wire
+EXTRA_DIST += rdata_dnskey_fromWire.wire rdata_dnskey_empty_keydata_fromWire.wire
+EXTRA_DIST += rdata_nsec_fromWire4.wire rdata_nsec_fromWire5.wire
+EXTRA_DIST += rdata_nsec_fromWire6.wire rdata_nsec_fromWire7.wire
+EXTRA_DIST += rdata_nsec_fromWire8.wire rdata_nsec_fromWire9.wire
+EXTRA_DIST += rdata_nsec_fromWire10.wire
+EXTRA_DIST += rdata_nsec_fromWire16.wire
+EXTRA_DIST += rdata_nsec3param_fromWire2.wire
+EXTRA_DIST += rdata_nsec3param_fromWire11.wire
+EXTRA_DIST += rdata_nsec3param_fromWire13.wire
+EXTRA_DIST += rdata_nsec3_fromWire2.wire rdata_nsec3_fromWire3
+EXTRA_DIST += rdata_nsec3_fromWire4.wire rdata_nsec3_fromWire5.wire
+EXTRA_DIST += rdata_nsec3_fromWire6.wire rdata_nsec3_fromWire7.wire
+EXTRA_DIST += rdata_nsec3_fromWire8.wire rdata_nsec3_fromWire9.wire
+EXTRA_DIST += rdata_nsec3_fromWire10.wire rdata_nsec3_fromWire11.wire
+EXTRA_DIST += rdata_nsec3_fromWire12.wire rdata_nsec3_fromWire13.wire
+EXTRA_DIST += rdata_nsec3_fromWire14.wire rdata_nsec3_fromWire15.wire
+EXTRA_DIST += rdata_nsec3_fromWire16.wire rdata_nsec3_fromWire17.wire
+EXTRA_DIST += rdata_rrsig_fromWire2.wire
+EXTRA_DIST += rdata_rp_fromWire1.wire rdata_rp_fromWire2.wire
+EXTRA_DIST += rdata_rp_fromWire3.wire rdata_rp_fromWire4.wire
+EXTRA_DIST += rdata_rp_fromWire5.wire rdata_rp_fromWire6.wire
+EXTRA_DIST += rdata_rp_toWire1.wire rdata_rp_toWire2.wire
+EXTRA_DIST += rdata_sshfp_fromWire1.wire rdata_sshfp_fromWire2.wire
+EXTRA_DIST += rdata_sshfp_fromWire3.wire rdata_sshfp_fromWire4.wire
+EXTRA_DIST += rdata_sshfp_fromWire5.wire rdata_sshfp_fromWire6.wire
+EXTRA_DIST += rdata_sshfp_fromWire7.wire rdata_sshfp_fromWire8.wire
+EXTRA_DIST += rdata_afsdb_fromWire1.wire rdata_afsdb_fromWire2.wire
+EXTRA_DIST += rdata_afsdb_fromWire3.wire rdata_afsdb_fromWire4.wire
+EXTRA_DIST += rdata_afsdb_fromWire5.wire
+EXTRA_DIST += rdata_afsdb_toWire1.wire rdata_afsdb_toWire2.wire
+EXTRA_DIST += rdata_soa_fromWire rdata_soa_toWireUncompressed.wire
+EXTRA_DIST += rdata_minfo_fromWire1.wire rdata_minfo_fromWire2.wire
+EXTRA_DIST += rdata_minfo_fromWire3.wire rdata_minfo_fromWire4.wire
+EXTRA_DIST += rdata_minfo_fromWire5.wire rdata_minfo_fromWire6.wire
+EXTRA_DIST += rdata_minfo_toWire1.wire rdata_minfo_toWire2.wire
+EXTRA_DIST += rdata_minfo_toWireUncompressed1.wire
+EXTRA_DIST += rdata_minfo_toWireUncompressed2.wire
+EXTRA_DIST += rdata_txt_fromWire1 rdata_txt_fromWire2.wire
+EXTRA_DIST += rdata_txt_fromWire3.wire rdata_txt_fromWire4.wire
+EXTRA_DIST += rdata_txt_fromWire5.wire rdata_unknown_fromWire
+EXTRA_DIST += rdata_tlsa_fromWire3.wire rdata_tlsa_fromWire4.wire
+EXTRA_DIST += rdata_tlsa_fromWire5.wire rdata_tlsa_fromWire6.wire
+EXTRA_DIST += rdata_tlsa_fromWire7.wire rdata_tlsa_fromWire8.wire
+EXTRA_DIST += rdata_tsig_fromWire1.wire rdata_tsig_fromWire2.wire
+EXTRA_DIST += rdata_tsig_fromWire3.wire rdata_tsig_fromWire4.wire
+EXTRA_DIST += rdata_tsig_fromWire5.wire rdata_tsig_fromWire6.wire
+EXTRA_DIST += rdata_tsig_fromWire7.wire rdata_tsig_fromWire8.wire
+EXTRA_DIST += rdata_tsig_fromWire9.wire
+EXTRA_DIST += rdata_tsig_toWire1.wire rdata_tsig_toWire2.wire
+EXTRA_DIST += rdata_tsig_toWire3.wire rdata_tsig_toWire4.wire
+EXTRA_DIST += rdata_tsig_toWire5.wire
+EXTRA_DIST += rdata_caa_fromWire1.wire rdata_caa_fromWire2.wire
+EXTRA_DIST += rdata_caa_fromWire3.wire rdata_caa_fromWire4.wire
+EXTRA_DIST += rdata_tkey_fromWire1.wire rdata_tkey_fromWire2.wire
+EXTRA_DIST += rdata_tkey_fromWire3.wire rdata_tkey_fromWire4.wire
+EXTRA_DIST += rdata_tkey_fromWire5.wire rdata_tkey_fromWire6.wire
+EXTRA_DIST += rdata_tkey_fromWire7.wire rdata_tkey_fromWire8.wire
+EXTRA_DIST += rdata_tkey_fromWire9.wire
+EXTRA_DIST += rdata_tkey_toWire1.wire rdata_tkey_toWire2.wire
+EXTRA_DIST += rdata_tkey_toWire3.wire rdata_tkey_toWire4.wire
+EXTRA_DIST += rdata_tkey_toWire5.wire
+EXTRA_DIST += tsigrecord_toWire1.wire tsigrecord_toWire2.wire
+EXTRA_DIST += tsig_verify1.wire tsig_verify2.wire tsig_verify3.wire
+EXTRA_DIST += tsig_verify4.wire tsig_verify5.wire tsig_verify6.wire
+EXTRA_DIST += tsig_verify7.wire tsig_verify8.wire tsig_verify9.wire
+EXTRA_DIST += tsig_verify10.wire tsig_verify11.wire
+
+# We no longer use gen_wiredata.py during build process, so the
+# dependency is no longer needed. However, we'll keep this dependency
+# commented till the gen_wiredata.py script is removed.
+
+#.spec.wire:
+#	$(PYTHON) $(top_builddir)/src/lib/util/python/gen_wiredata.py -o $@ $<
diff --git a/src/lib/dns/tests/testdata/Makefile.in b/src/lib/dns/tests/testdata/Makefile.in
new file mode 100644
index 0000000..0a311f3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/Makefile.in
@@ -0,0 +1,740 @@
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+mandir = @mandir@
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+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
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+prefix = @prefix@
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+top_srcdir = @top_srcdir@
+CLEANFILES = 
+
+# NOTE: keep this in sync with real file listing
+# so is included in tarball
+
+# Generated .wire files
+EXTRA_DIST = edns_toWire1.spec edns_toWire2.spec edns_toWire3.spec \
+	edns_toWire4.spec masterload.txt message_fromWire1 \
+	message_fromWire2 message_fromWire3 message_fromWire4 \
+	message_fromWire5 message_fromWire6 message_fromWire7 \
+	message_fromWire8 message_fromWire9 message_fromWire10.spec \
+	message_fromWire11.spec message_fromWire12.spec \
+	message_fromWire13.spec message_fromWire14.spec \
+	message_fromWire15.spec message_fromWire16.spec \
+	message_fromWire17.spec message_fromWire18.spec \
+	message_fromWire19.spec message_fromWire20.spec \
+	message_fromWire21.spec message_fromWire22.spec \
+	message_toWire1 message_toWire2.spec message_toWire3.spec \
+	message_toWire4.spec message_toWire5.spec message_toWire6 \
+	message_toWire7 message_toText1.txt message_toText1.spec \
+	message_toText2.txt message_toText2.spec message_toText3.txt \
+	message_toText3.spec name_fromWire1 name_fromWire2 \
+	name_fromWire3_1 name_fromWire3_2 name_fromWire4 \
+	name_fromWire6 name_fromWire7 name_fromWire8 name_fromWire9 \
+	name_fromWire10 name_fromWire11 name_fromWire12 \
+	name_fromWire13 name_fromWire14 name_toWire1 name_toWire2 \
+	name_toWire3 name_toWire4 name_toWire5.spec name_toWire6.spec \
+	name_toWire7 name_toWire8 name_toWire9 question_fromWire \
+	question_toWire1 question_toWire2 rdatafields1.spec \
+	rdatafields2.spec rdatafields3.spec rdatafields4.spec \
+	rdatafields5.spec rdatafields6.spec rdata_cname_fromWire \
+	rdata_dname_fromWire rdata_dnskey_fromWire.spec \
+	rdata_dnskey_empty_keydata_fromWire.spec rdata_dhcid_fromWire \
+	rdata_dhcid_toWire rdata_ds_fromWire rdata_in_a_fromWire \
+	rdata_in_aaaa_fromWire rdata_mx_fromWire rdata_mx_toWire1 \
+	rdata_mx_toWire2 rdata_ns_fromWire rdata_nsec_fromWire1 \
+	rdata_nsec_fromWire2 rdata_nsec_fromWire3 \
+	rdata_nsec_fromWire4.spec rdata_nsec_fromWire5.spec \
+	rdata_nsec_fromWire6.spec rdata_nsec_fromWire7.spec \
+	rdata_nsec_fromWire8.spec rdata_nsec_fromWire9.spec \
+	rdata_nsec_fromWire10.spec rdata_nsec_fromWire16.spec \
+	rdata_nsec3param_fromWire1 rdata_nsec3param_fromWire2.spec \
+	rdata_nsec3param_fromWire11.spec \
+	rdata_nsec3param_fromWire13.spec rdata_nsec3_fromWire1 \
+	rdata_nsec3_fromWire1.spec rdata_nsec3_fromWire2.spec \
+	rdata_nsec3_fromWire3 rdata_nsec3_fromWire4.spec \
+	rdata_nsec3_fromWire5.spec rdata_nsec3_fromWire6.spec \
+	rdata_nsec3_fromWire7.spec rdata_nsec3_fromWire8.spec \
+	rdata_nsec3_fromWire9.spec rdata_nsec3_fromWire10.spec \
+	rdata_nsec3_fromWire11.spec rdata_nsec3_fromWire12.spec \
+	rdata_nsec3_fromWire13.spec rdata_nsec3_fromWire14.spec \
+	rdata_nsec3_fromWire15.spec rdata_nsec3_fromWire16.spec \
+	rdata_nsec3_fromWire17.spec rdata_opt_fromWire1 \
+	rdata_opt_fromWire2 rdata_opt_fromWire3 rdata_opt_fromWire4 \
+	rdata_rrsig_fromWire1 rdata_rrsig_fromWire2.spec \
+	rdata_rp_fromWire1.spec rdata_rp_fromWire2.spec \
+	rdata_rp_fromWire3.spec rdata_rp_fromWire4.spec \
+	rdata_rp_fromWire5.spec rdata_rp_fromWire6.spec \
+	rdata_rp_toWire1.spec rdata_rp_toWire2.spec \
+	rdata_sshfp_fromWire rdata_sshfp_fromWire2 \
+	rdata_sshfp_fromWire1.spec rdata_sshfp_fromWire2.spec \
+	rdata_sshfp_fromWire3.spec rdata_sshfp_fromWire4.spec \
+	rdata_sshfp_fromWire5.spec rdata_sshfp_fromWire6.spec \
+	rdata_sshfp_fromWire7.spec rdata_sshfp_fromWire8.spec \
+	rdata_sshfp_fromWire9 rdata_sshfp_fromWire10 \
+	rdata_sshfp_fromWire11 rdata_sshfp_fromWire12 \
+	rdata_afsdb_fromWire1.spec rdata_afsdb_fromWire2.spec \
+	rdata_afsdb_fromWire3.spec rdata_afsdb_fromWire4.spec \
+	rdata_afsdb_fromWire5.spec rdata_afsdb_toWire1.spec \
+	rdata_afsdb_toWire2.spec rdata_soa_fromWire \
+	rdata_soa_toWireUncompressed.spec rdata_srv_fromWire \
+	rdata_minfo_fromWire1.spec rdata_minfo_fromWire2.spec \
+	rdata_minfo_fromWire3.spec rdata_minfo_fromWire4.spec \
+	rdata_minfo_fromWire5.spec rdata_minfo_fromWire6.spec \
+	rdata_minfo_toWire1.spec rdata_minfo_toWire2.spec \
+	rdata_minfo_toWireUncompressed1.spec \
+	rdata_minfo_toWireUncompressed2.spec rdata_txt_fromWire1 \
+	rdata_txt_fromWire2.spec rdata_txt_fromWire3.spec \
+	rdata_txt_fromWire4.spec rdata_txt_fromWire5.spec \
+	rdata_unknown_fromWire rrcode16_fromWire1 rrcode16_fromWire2 \
+	rrcode32_fromWire1 rrcode32_fromWire2 rrset_toWire1 \
+	rrset_toWire2 rrset_toWire3 rrset_toWire4 \
+	rdata_tkey_fromWire1.spec rdata_tkey_fromWire2.spec \
+	rdata_tkey_fromWire3.spec rdata_tkey_fromWire4.spec \
+	rdata_tkey_fromWire5.spec rdata_tkey_fromWire6.spec \
+	rdata_tkey_fromWire7.spec rdata_tkey_fromWire8.spec \
+	rdata_tkey_fromWire9.spec rdata_tkey_toWire1.spec \
+	rdata_tkey_toWire2.spec rdata_tkey_toWire3.spec \
+	rdata_tkey_toWire4.spec rdata_tkey_toWire5.spec \
+	rdata_tlsa_fromWire rdata_tlsa_fromWire2 \
+	rdata_tlsa_fromWire3.spec rdata_tlsa_fromWire4.spec \
+	rdata_tlsa_fromWire5.spec rdata_tlsa_fromWire6.spec \
+	rdata_tlsa_fromWire7.spec rdata_tlsa_fromWire8.spec \
+	rdata_tlsa_fromWire9 rdata_tlsa_fromWire10 \
+	rdata_tlsa_fromWire11 rdata_tlsa_fromWire12 \
+	rdata_tsig_fromWire1.spec rdata_tsig_fromWire2.spec \
+	rdata_tsig_fromWire3.spec rdata_tsig_fromWire4.spec \
+	rdata_tsig_fromWire5.spec rdata_tsig_fromWire6.spec \
+	rdata_tsig_fromWire7.spec rdata_tsig_fromWire8.spec \
+	rdata_tsig_fromWire9.spec rdata_tsig_toWire1.spec \
+	rdata_tsig_toWire2.spec rdata_tsig_toWire3.spec \
+	rdata_tsig_toWire4.spec rdata_tsig_toWire5.spec \
+	rdata_caa_fromWire1.spec rdata_caa_fromWire2.spec \
+	rdata_caa_fromWire3.spec rdata_caa_fromWire4.spec \
+	rdata_caa_fromWire5 rdata_caa_fromWire6 \
+	tsigrecord_toWire1.spec tsigrecord_toWire2.spec \
+	tsig_verify1.spec tsig_verify2.spec tsig_verify3.spec \
+	tsig_verify4.spec tsig_verify5.spec tsig_verify6.spec \
+	tsig_verify7.spec tsig_verify8.spec tsig_verify9.spec \
+	tsig_verify10.spec tsig_verify11.spec example.org broken.zone \
+	origincheck.txt omitcheck.txt edns_toWire1.wire \
+	edns_toWire2.wire edns_toWire3.wire edns_toWire4.wire \
+	message_fromWire10.wire message_fromWire11.wire \
+	message_fromWire12.wire message_fromWire13.wire \
+	message_fromWire14.wire message_fromWire15.wire \
+	message_fromWire16.wire message_fromWire17.wire \
+	message_fromWire18.wire message_fromWire19.wire \
+	message_fromWire20.wire message_fromWire21.wire \
+	message_fromWire22.wire message_toWire1 message_toWire2.wire \
+	message_toWire3.wire message_toWire4.wire message_toWire5.wire \
+	message_toText1.txt message_toText1.wire message_toText2.txt \
+	message_toText2.wire message_toText3.txt message_toText3.wire \
+	name_toWire5.wire name_toWire6.wire rdatafields1.wire \
+	rdatafields2.wire rdatafields3.wire rdatafields4.wire \
+	rdatafields5.wire rdatafields6.wire rdata_dnskey_fromWire.wire \
+	rdata_dnskey_empty_keydata_fromWire.wire \
+	rdata_nsec_fromWire4.wire rdata_nsec_fromWire5.wire \
+	rdata_nsec_fromWire6.wire rdata_nsec_fromWire7.wire \
+	rdata_nsec_fromWire8.wire rdata_nsec_fromWire9.wire \
+	rdata_nsec_fromWire10.wire rdata_nsec_fromWire16.wire \
+	rdata_nsec3param_fromWire2.wire \
+	rdata_nsec3param_fromWire11.wire \
+	rdata_nsec3param_fromWire13.wire rdata_nsec3_fromWire2.wire \
+	rdata_nsec3_fromWire3 rdata_nsec3_fromWire4.wire \
+	rdata_nsec3_fromWire5.wire rdata_nsec3_fromWire6.wire \
+	rdata_nsec3_fromWire7.wire rdata_nsec3_fromWire8.wire \
+	rdata_nsec3_fromWire9.wire rdata_nsec3_fromWire10.wire \
+	rdata_nsec3_fromWire11.wire rdata_nsec3_fromWire12.wire \
+	rdata_nsec3_fromWire13.wire rdata_nsec3_fromWire14.wire \
+	rdata_nsec3_fromWire15.wire rdata_nsec3_fromWire16.wire \
+	rdata_nsec3_fromWire17.wire rdata_rrsig_fromWire2.wire \
+	rdata_rp_fromWire1.wire rdata_rp_fromWire2.wire \
+	rdata_rp_fromWire3.wire rdata_rp_fromWire4.wire \
+	rdata_rp_fromWire5.wire rdata_rp_fromWire6.wire \
+	rdata_rp_toWire1.wire rdata_rp_toWire2.wire \
+	rdata_sshfp_fromWire1.wire rdata_sshfp_fromWire2.wire \
+	rdata_sshfp_fromWire3.wire rdata_sshfp_fromWire4.wire \
+	rdata_sshfp_fromWire5.wire rdata_sshfp_fromWire6.wire \
+	rdata_sshfp_fromWire7.wire rdata_sshfp_fromWire8.wire \
+	rdata_afsdb_fromWire1.wire rdata_afsdb_fromWire2.wire \
+	rdata_afsdb_fromWire3.wire rdata_afsdb_fromWire4.wire \
+	rdata_afsdb_fromWire5.wire rdata_afsdb_toWire1.wire \
+	rdata_afsdb_toWire2.wire rdata_soa_fromWire \
+	rdata_soa_toWireUncompressed.wire rdata_minfo_fromWire1.wire \
+	rdata_minfo_fromWire2.wire rdata_minfo_fromWire3.wire \
+	rdata_minfo_fromWire4.wire rdata_minfo_fromWire5.wire \
+	rdata_minfo_fromWire6.wire rdata_minfo_toWire1.wire \
+	rdata_minfo_toWire2.wire rdata_minfo_toWireUncompressed1.wire \
+	rdata_minfo_toWireUncompressed2.wire rdata_txt_fromWire1 \
+	rdata_txt_fromWire2.wire rdata_txt_fromWire3.wire \
+	rdata_txt_fromWire4.wire rdata_txt_fromWire5.wire \
+	rdata_unknown_fromWire rdata_tlsa_fromWire3.wire \
+	rdata_tlsa_fromWire4.wire rdata_tlsa_fromWire5.wire \
+	rdata_tlsa_fromWire6.wire rdata_tlsa_fromWire7.wire \
+	rdata_tlsa_fromWire8.wire rdata_tsig_fromWire1.wire \
+	rdata_tsig_fromWire2.wire rdata_tsig_fromWire3.wire \
+	rdata_tsig_fromWire4.wire rdata_tsig_fromWire5.wire \
+	rdata_tsig_fromWire6.wire rdata_tsig_fromWire7.wire \
+	rdata_tsig_fromWire8.wire rdata_tsig_fromWire9.wire \
+	rdata_tsig_toWire1.wire rdata_tsig_toWire2.wire \
+	rdata_tsig_toWire3.wire rdata_tsig_toWire4.wire \
+	rdata_tsig_toWire5.wire rdata_caa_fromWire1.wire \
+	rdata_caa_fromWire2.wire rdata_caa_fromWire3.wire \
+	rdata_caa_fromWire4.wire rdata_tkey_fromWire1.wire \
+	rdata_tkey_fromWire2.wire rdata_tkey_fromWire3.wire \
+	rdata_tkey_fromWire4.wire rdata_tkey_fromWire5.wire \
+	rdata_tkey_fromWire6.wire rdata_tkey_fromWire7.wire \
+	rdata_tkey_fromWire8.wire rdata_tkey_fromWire9.wire \
+	rdata_tkey_toWire1.wire rdata_tkey_toWire2.wire \
+	rdata_tkey_toWire3.wire rdata_tkey_toWire4.wire \
+	rdata_tkey_toWire5.wire tsigrecord_toWire1.wire \
+	tsigrecord_toWire2.wire tsig_verify1.wire tsig_verify2.wire \
+	tsig_verify3.wire tsig_verify4.wire tsig_verify5.wire \
+	tsig_verify6.wire tsig_verify7.wire tsig_verify8.wire \
+	tsig_verify9.wire tsig_verify10.wire tsig_verify11.wire
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign src/lib/dns/tests/testdata/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign src/lib/dns/tests/testdata/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic clean-libtool \
+	cscopelist-am ctags-am distclean distclean-generic \
+	distclean-libtool distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	tags-am uninstall uninstall-am
+
+.PRECIOUS: Makefile
+
+
+# We no longer use gen_wiredata.py during build process, so the
+# dependency is no longer needed. However, we'll keep this dependency
+# commented till the gen_wiredata.py script is removed.
+
+#.spec.wire:
+#	$(PYTHON) $(top_builddir)/src/lib/util/python/gen_wiredata.py -o $@ $<
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/lib/dns/tests/testdata/broken.zone b/src/lib/dns/tests/testdata/broken.zone
new file mode 100644
index 0000000..70f4540
--- /dev/null
+++ b/src/lib/dns/tests/testdata/broken.zone
@@ -0,0 +1,3 @@
+; This should fail due to broken TTL
+; The file should _NOT_ end with EOLN
+broken.     3600X   IN  A   192.0.2.2 More data
\ No newline at end of file
diff --git a/src/lib/dns/tests/testdata/edns_toWire1.spec b/src/lib/dns/tests/testdata/edns_toWire1.spec
new file mode 100644
index 0000000..483aefa
--- /dev/null
+++ b/src/lib/dns/tests/testdata/edns_toWire1.spec
@@ -0,0 +1,5 @@
+#
+# A simplest form of EDNS: all default parameters
+#
+[edns]
+
diff --git a/src/lib/dns/tests/testdata/edns_toWire1.wire b/src/lib/dns/tests/testdata/edns_toWire1.wire
new file mode 100644
index 0000000..2884e29
--- /dev/null
+++ b/src/lib/dns/tests/testdata/edns_toWire1.wire
@@ -0,0 +1,9 @@
+###
+### This data file was auto-generated from edns_toWire1.spec
+###
+
+# EDNS OPT RR
+# NAME=. TYPE=OPT(41) UDPSize=4096 ExtRcode=0 Version=0 DO=0
+00 0029 1000 0000 0000
+# RDLEN=0
+0000
diff --git a/src/lib/dns/tests/testdata/edns_toWire2.spec b/src/lib/dns/tests/testdata/edns_toWire2.spec
new file mode 100644
index 0000000..7fe1ffd
--- /dev/null
+++ b/src/lib/dns/tests/testdata/edns_toWire2.spec
@@ -0,0 +1,5 @@
+#
+# Same as edns_toWire1 but setting the DO bit
+#
+[edns]
+do: 1
diff --git a/src/lib/dns/tests/testdata/edns_toWire2.wire b/src/lib/dns/tests/testdata/edns_toWire2.wire
new file mode 100644
index 0000000..cb09000
--- /dev/null
+++ b/src/lib/dns/tests/testdata/edns_toWire2.wire
@@ -0,0 +1,9 @@
+###
+### This data file was auto-generated from edns_toWire2.spec
+###
+
+# EDNS OPT RR
+# NAME=. TYPE=OPT(41) UDPSize=4096 ExtRcode=0 Version=0 DO=1
+00 0029 1000 0000 8000
+# RDLEN=0
+0000
diff --git a/src/lib/dns/tests/testdata/edns_toWire3.spec b/src/lib/dns/tests/testdata/edns_toWire3.spec
new file mode 100644
index 0000000..0332097
--- /dev/null
+++ b/src/lib/dns/tests/testdata/edns_toWire3.spec
@@ -0,0 +1,7 @@
+#
+# Same as edns_toWire1 but setting the DO bit, and extended Rcode being non 0
+# (for BADVER)
+#
+[edns]
+do: 1
+extrcode: 0x1
diff --git a/src/lib/dns/tests/testdata/edns_toWire3.wire b/src/lib/dns/tests/testdata/edns_toWire3.wire
new file mode 100644
index 0000000..b8d0775
--- /dev/null
+++ b/src/lib/dns/tests/testdata/edns_toWire3.wire
@@ -0,0 +1,9 @@
+###
+### This data file was auto-generated from edns_toWire3.spec
+###
+
+# EDNS OPT RR
+# NAME=. TYPE=OPT(41) UDPSize=4096 ExtRcode=1 Version=0 DO=1
+00 0029 1000 0100 8000
+# RDLEN=0
+0000
diff --git a/src/lib/dns/tests/testdata/edns_toWire4.spec b/src/lib/dns/tests/testdata/edns_toWire4.spec
new file mode 100644
index 0000000..ea1f5e3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/edns_toWire4.spec
@@ -0,0 +1,7 @@
+#
+# Same as edns_toWire1 but setting the DO bit, and using an unusual
+# UDP payload size
+#
+[edns]
+do: 1
+udpsize = 511
diff --git a/src/lib/dns/tests/testdata/edns_toWire4.wire b/src/lib/dns/tests/testdata/edns_toWire4.wire
new file mode 100644
index 0000000..73bf757
--- /dev/null
+++ b/src/lib/dns/tests/testdata/edns_toWire4.wire
@@ -0,0 +1,9 @@
+###
+### This data file was auto-generated from edns_toWire4.spec
+###
+
+# EDNS OPT RR
+# NAME=. TYPE=OPT(41) UDPSize=511 ExtRcode=0 Version=0 DO=1
+00 0029 01ff 0000 8000
+# RDLEN=0
+0000
diff --git a/src/lib/dns/tests/testdata/example.org b/src/lib/dns/tests/testdata/example.org
new file mode 100644
index 0000000..2708ef4
--- /dev/null
+++ b/src/lib/dns/tests/testdata/example.org
@@ -0,0 +1,17 @@
+example.org.        3600    IN  SOA ( ; The SOA, split across lines for testing
+    ns1.example.org.
+    admin.example.org.
+    1234
+    3600
+    1800
+    2419200
+    7200
+    )
+; Check it accepts quoted name too
+"\101xample.org."        3600    IN  NS ns1.example.org.
+
+
+; Some empty lines here. They are to make sure the loader can skip them.
+www                 3600    IN  A 192.0.2.1 ; Test a relative name as well.
+                    3600    IN  AAAA    2001:db8::1 ; And initial whitespace handling
+         ; Here be just some space, no RRs
diff --git a/src/lib/dns/tests/testdata/masterload.txt b/src/lib/dns/tests/testdata/masterload.txt
new file mode 100644
index 0000000..0d2f942
--- /dev/null
+++ b/src/lib/dns/tests/testdata/masterload.txt
@@ -0,0 +1,5 @@
+;; a simple (incomplete) zone file
+
+example.com. 3600 IN TXT "test data"
+www.example.com. 60 IN A 192.0.2.1
+www.example.com. 60 IN A 192.0.2.2
diff --git a/src/lib/dns/tests/testdata/message_fromWire1 b/src/lib/dns/tests/testdata/message_fromWire1
new file mode 100644
index 0000000..5b76e3f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire1
@@ -0,0 +1,22 @@
+#
+# A simple DNS response message
+# ID = 0x1035
+# QR=1 (response), Opcode=0, AA=1, RD=1 (other fields are 0)
+# QDCOUNT=1, ANCOUNT=2, other COUNTS=0
+# Question: test.example.com. IN A
+# Answer:
+#  test.example.com. 3600 IN A 192.0.2.1
+#  test.example.com. 7200 IN A 192.0.2.2
+#
+1035 8500
+0001 0002 0000 0000
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+0001 0001
+# same name, fully compressed
+c0 0c
+# TTL=3600, A, IN, RDLENGTH=4, RDATA
+0001 0001 00000e10 0004 c0 00 02 01
+# mostly same, with the slight difference in RDATA and TTL
+c0 0c
+0001 0001 00001c20 0004 c0 00 02 02
diff --git a/src/lib/dns/tests/testdata/message_fromWire10.spec b/src/lib/dns/tests/testdata/message_fromWire10.spec
new file mode 100644
index 0000000..d3fb014
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire10.spec
@@ -0,0 +1,13 @@
+#
+# A simple DNS response message with an EDNS0 indicating a BADVERS error
+#
+
+[header]
+qr: response
+rd: 1
+arcount: 1
+[question]
+# use default
+[edns]
+do: 1
+extrcode: 1
diff --git a/src/lib/dns/tests/testdata/message_fromWire10.wire b/src/lib/dns/tests/testdata/message_fromWire10.wire
new file mode 100644
index 0000000..fa76b92
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire10.wire
@@ -0,0 +1,19 @@
+###
+### This data file was auto-generated from message_fromWire10.spec
+###
+
+# Header Section
+# ID=4149 QR=Response Opcode=QUERY(0) Rcode=NOERROR(0) RD
+1035 8100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=example.com. QTYPE=A(1) QCLASS=IN(1)
+076578616d706c6503636f6d00 0001 0001
+
+# EDNS OPT RR
+# NAME=. TYPE=OPT(41) UDPSize=4096 ExtRcode=1 Version=0 DO=1
+00 0029 1000 0100 8000
+# RDLEN=0
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire11.spec b/src/lib/dns/tests/testdata/message_fromWire11.spec
new file mode 100644
index 0000000..5f31746
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire11.spec
@@ -0,0 +1,15 @@
+#
+# A simple DNS response message with an EDNS0 indicating the maximum error code
+# (0xfff)
+#
+
+[header]
+qr: response
+rd: 1
+rcode: 0xf
+arcount: 1
+[question]
+# use default
+[edns]
+do: 1
+extrcode: 0xff
diff --git a/src/lib/dns/tests/testdata/message_fromWire11.wire b/src/lib/dns/tests/testdata/message_fromWire11.wire
new file mode 100644
index 0000000..f20132c
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire11.wire
@@ -0,0 +1,19 @@
+###
+### This data file was auto-generated from message_fromWire11.spec
+###
+
+# Header Section
+# ID=4149 QR=Response Opcode=QUERY(0) Rcode=15 RD
+1035 810f
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=example.com. QTYPE=A(1) QCLASS=IN(1)
+076578616d706c6503636f6d00 0001 0001
+
+# EDNS OPT RR
+# NAME=. TYPE=OPT(41) UDPSize=4096 ExtRcode=255 Version=0 DO=1
+00 0029 1000 ff00 8000
+# RDLEN=0
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire12.spec b/src/lib/dns/tests/testdata/message_fromWire12.spec
new file mode 100644
index 0000000..4eadeed
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire12.spec
@@ -0,0 +1,21 @@
+#
+# A simple DNS response message with TSIG signed, but the owner name of TSIG
+# is compressed
+#
+
+[custom]
+sections: header:question:tsig
+[header]
+id: 0x2d65
+rd: 1
+arcount: 1
+[question]
+name: www.example.com
+[tsig]
+as_rr: True
+rr_name: ptr=12
+algorithm: hmac-md5
+time_signed: 0x4da8877a
+mac_size: 16
+mac: 0x227026ad297beee721ce6c6fff1e9ef3
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/message_fromWire12.wire b/src/lib/dns/tests/testdata/message_fromWire12.wire
new file mode 100644
index 0000000..9ceb356
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire12.wire
@@ -0,0 +1,24 @@
+###
+### This data file was auto-generated from message_fromWire12.spec
+###
+
+# Header Section
+# ID=11621 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+2d65 0100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# TSIG RR (QNAME=ptr=12 Class=ANY(255) TTL=0, RDLEN=58)
+c00c 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=16 MAC=(see hex)
+0010 227026ad297beee721ce6c6fff1e9ef3
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire13.spec b/src/lib/dns/tests/testdata/message_fromWire13.spec
new file mode 100644
index 0000000..e81ec4c
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire13.spec
@@ -0,0 +1,20 @@
+#
+# Invalid TSIG: containing 2 TSIG RRs.
+#
+
+[custom]
+sections: header:question:tsig:tsig
+[header]
+id: 0x2d65
+rd: 1
+arcount: 2
+[question]
+name: www.example.com
+[tsig]
+as_rr: True
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8877a
+mac_size: 16
+mac: 0x227026ad297beee721ce6c6fff1e9ef3
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/message_fromWire13.wire b/src/lib/dns/tests/testdata/message_fromWire13.wire
new file mode 100644
index 0000000..05b064a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire13.wire
@@ -0,0 +1,35 @@
+###
+### This data file was auto-generated from message_fromWire13.spec
+###
+
+# Header Section
+# ID=11621 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+2d65 0100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=2
+0001 0000 0000 0002
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=16 MAC=(see hex)
+0010 227026ad297beee721ce6c6fff1e9ef3
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=16 MAC=(see hex)
+0010 227026ad297beee721ce6c6fff1e9ef3
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire14.spec b/src/lib/dns/tests/testdata/message_fromWire14.spec
new file mode 100644
index 0000000..bf68a93
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire14.spec
@@ -0,0 +1,21 @@
+#
+# Invalid TSIG: not in the additional section.
+#
+
+[custom]
+sections: header:question:tsig
+[header]
+id: 0x2d65
+rd: 1
+# TSIG goes to the answer section
+ancount: 1
+[question]
+name: www.example.com
+[tsig]
+as_rr: True
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8877a
+mac_size: 16
+mac: 0x227026ad297beee721ce6c6fff1e9ef3
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/message_fromWire14.wire b/src/lib/dns/tests/testdata/message_fromWire14.wire
new file mode 100644
index 0000000..17d0e21
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire14.wire
@@ -0,0 +1,24 @@
+###
+### This data file was auto-generated from message_fromWire14.spec
+###
+
+# Header Section
+# ID=11621 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+2d65 0100
+# QDCNT=1, ANCNT=1, NSCNT=0, ARCNT=0
+0001 0001 0000 0000
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=16 MAC=(see hex)
+0010 227026ad297beee721ce6c6fff1e9ef3
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire15.spec b/src/lib/dns/tests/testdata/message_fromWire15.spec
new file mode 100644
index 0000000..25d810f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire15.spec
@@ -0,0 +1,22 @@
+#
+# Invalid TSIG: not at the end of the message
+#
+
+[custom]
+sections: header:question:tsig:edns
+[header]
+id: 0x2d65
+rd: 1
+arcount: 2
+[question]
+name: www.example.com
+[tsig]
+as_rr: True
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8877a
+mac_size: 16
+mac: 0x227026ad297beee721ce6c6fff1e9ef3
+original_id: 0x2d65
+[edns]
+# (all default)
diff --git a/src/lib/dns/tests/testdata/message_fromWire15.wire b/src/lib/dns/tests/testdata/message_fromWire15.wire
new file mode 100644
index 0000000..e3f36d0
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire15.wire
@@ -0,0 +1,30 @@
+###
+### This data file was auto-generated from message_fromWire15.spec
+###
+
+# Header Section
+# ID=11621 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+2d65 0100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=2
+0001 0000 0000 0002
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=16 MAC=(see hex)
+0010 227026ad297beee721ce6c6fff1e9ef3
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
+
+# EDNS OPT RR
+# NAME=. TYPE=OPT(41) UDPSize=4096 ExtRcode=0 Version=0 DO=0
+00 0029 1000 0000 0000
+# RDLEN=0
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire16.spec b/src/lib/dns/tests/testdata/message_fromWire16.spec
new file mode 100644
index 0000000..be0abc3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire16.spec
@@ -0,0 +1,21 @@
+#
+# Invalid TSIG: not in the additional section.
+#
+
+[custom]
+sections: header:question:tsig
+[header]
+id: 0x2d65
+rd: 1
+arcount: 1
+[question]
+name: www.example.com
+[tsig]
+as_rr: True
+rr_class: IN
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8877a
+mac_size: 16
+mac: 0x227026ad297beee721ce6c6fff1e9ef3
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/message_fromWire16.wire b/src/lib/dns/tests/testdata/message_fromWire16.wire
new file mode 100644
index 0000000..04a791a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire16.wire
@@ -0,0 +1,24 @@
+###
+### This data file was auto-generated from message_fromWire16.spec
+###
+
+# Header Section
+# ID=11621 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+2d65 0100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# TSIG RR (QNAME=www.example.com Class=IN(1) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 0001 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=16 MAC=(see hex)
+0010 227026ad297beee721ce6c6fff1e9ef3
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire17.spec b/src/lib/dns/tests/testdata/message_fromWire17.spec
new file mode 100644
index 0000000..366cf05
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire17.spec
@@ -0,0 +1,22 @@
+#
+# A simple DNS query message with TSIG signed
+#
+
+[custom]
+sections: header:question:tsig
+[header]
+id: 0x22c2
+rd: 1
+arcount: 1
+[question]
+name: www.example.com
+rrtype: TXT
+[tsig]
+as_rr: True
+# TSIG QNAME won't be compressed
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4e179212
+mac_size: 16
+mac: 0x8214b04634e32323d651ac60b08e6388
+original_id: 0x22c2
diff --git a/src/lib/dns/tests/testdata/message_fromWire17.wire b/src/lib/dns/tests/testdata/message_fromWire17.wire
new file mode 100644
index 0000000..e607c52
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire17.wire
@@ -0,0 +1,24 @@
+###
+### This data file was auto-generated from message_fromWire17.spec
+###
+
+# Header Section
+# ID=8898 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+22c2 0100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=TXT(16) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0010 0001
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1310167570 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004e179212 012c
+# MAC Size=16 MAC=(see hex)
+0010 8214b04634e32323d651ac60b08e6388
+# Original-ID=8898 Error=0
+22c2 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire18.spec b/src/lib/dns/tests/testdata/message_fromWire18.spec
new file mode 100644
index 0000000..0b2592a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire18.spec
@@ -0,0 +1,23 @@
+#
+# Another simple DNS query message with TSIG signed.  Only ID and time signed
+# (and MAC as a result) are different.
+#
+
+[custom]
+sections: header:question:tsig
+[header]
+id: 0xd6e2
+rd: 1
+arcount: 1
+[question]
+name: www.example.com
+rrtype: TXT
+[tsig]
+as_rr: True
+# TSIG QNAME won't be compressed
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4e17b38d
+mac_size: 16
+mac: 0x903b5b194a799b03a37718820c2404f2
+original_id: 0xd6e2
diff --git a/src/lib/dns/tests/testdata/message_fromWire18.wire b/src/lib/dns/tests/testdata/message_fromWire18.wire
new file mode 100644
index 0000000..82bdf6b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire18.wire
@@ -0,0 +1,24 @@
+###
+### This data file was auto-generated from message_fromWire18.spec
+###
+
+# Header Section
+# ID=55010 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+d6e2 0100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=TXT(16) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0010 0001
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1310176141 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004e17b38d 012c
+# MAC Size=16 MAC=(see hex)
+0010 903b5b194a799b03a37718820c2404f2
+# Original-ID=55010 Error=0
+d6e2 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire19.spec b/src/lib/dns/tests/testdata/message_fromWire19.spec
new file mode 100644
index 0000000..8212dbf
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire19.spec
@@ -0,0 +1,20 @@
+#
+# A non realistic DNS response message containing mixed types of RRs in the
+# answer section in a mixed order.
+#
+
+[custom]
+sections: header:question:a/1:aaaa:a/2
+[header]
+qr: 1
+ancount: 3
+[question]
+name: www.example.com
+rrtype: A
+[a/1]
+as_rr: True
+[aaaa]
+as_rr: True
+[a/2]
+as_rr: True
+address: 192.0.2.2
diff --git a/src/lib/dns/tests/testdata/message_fromWire19.wire b/src/lib/dns/tests/testdata/message_fromWire19.wire
new file mode 100644
index 0000000..d154244
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire19.wire
@@ -0,0 +1,28 @@
+###
+### This data file was auto-generated from message_fromWire19.spec
+###
+
+# Header Section
+# ID=4149 QR=Response Opcode=QUERY(0) Rcode=NOERROR(0)
+1035 8000
+# QDCNT=1, ANCNT=3, NSCNT=0, ARCNT=0
+0001 0003 0000 0000
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# A RR (QNAME=example.com Class=IN(1) TTL=86400, RDLEN=4)
+076578616d706c6503636f6d00 0001 0001 00015180 0004
+# Address=192.0.2.1
+c0000201
+
+# AAAA RR (QNAME=example.com Class=IN(1) TTL=86400, RDLEN=16)
+076578616d706c6503636f6d00 001c 0001 00015180 0010
+# Address=2001:db8::1
+20010db8000000000000000000000001
+
+# A RR (QNAME=example.com Class=IN(1) TTL=86400, RDLEN=4)
+076578616d706c6503636f6d00 0001 0001 00015180 0004
+# Address=192.0.2.2
+c0000202
diff --git a/src/lib/dns/tests/testdata/message_fromWire2 b/src/lib/dns/tests/testdata/message_fromWire2
new file mode 100644
index 0000000..194cbf2
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire2
@@ -0,0 +1,22 @@
+#
+# A simple DNS query message with a valid EDNS0 OPT RR
+# ID = 0x1035
+# QR=0 (query), Opcode=0, RD=1 (other fields are 0)
+# QDCOUNT=1, ANCOUNT=0, NSCOUNT=0, ARCOUNT=1
+# Question: test.example.com. IN A
+1035 0100
+0001 0000 0000 0001
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+0001 0001
+# EDNS0 OPT RR
+# owner name: "."
+00
+# TYPE: OPT (41 = 0x29)
+00 29
+# CLASS (= UDP size): 4096
+1000
+# TTL (extended RCODE and flags): RCODE=0, version=0, flags=DO
+0000 8000
+# RDLEN = 0
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire20.spec b/src/lib/dns/tests/testdata/message_fromWire20.spec
new file mode 100644
index 0000000..91986e4
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire20.spec
@@ -0,0 +1,20 @@
+#
+# A non realistic DNS response message containing mixed types of RRs in the
+# authority section in a mixed order.
+#
+
+[custom]
+sections: header:question:a/1:aaaa:a/2
+[header]
+qr: 1
+nscount: 3
+[question]
+name: www.example.com
+rrtype: A
+[a/1]
+as_rr: True
+[aaaa]
+as_rr: True
+[a/2]
+as_rr: True
+address: 192.0.2.2
diff --git a/src/lib/dns/tests/testdata/message_fromWire20.wire b/src/lib/dns/tests/testdata/message_fromWire20.wire
new file mode 100644
index 0000000..887dd1e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire20.wire
@@ -0,0 +1,28 @@
+###
+### This data file was auto-generated from message_fromWire20.spec
+###
+
+# Header Section
+# ID=4149 QR=Response Opcode=QUERY(0) Rcode=NOERROR(0)
+1035 8000
+# QDCNT=1, ANCNT=0, NSCNT=3, ARCNT=0
+0001 0000 0003 0000
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# A RR (QNAME=example.com Class=IN(1) TTL=86400, RDLEN=4)
+076578616d706c6503636f6d00 0001 0001 00015180 0004
+# Address=192.0.2.1
+c0000201
+
+# AAAA RR (QNAME=example.com Class=IN(1) TTL=86400, RDLEN=16)
+076578616d706c6503636f6d00 001c 0001 00015180 0010
+# Address=2001:db8::1
+20010db8000000000000000000000001
+
+# A RR (QNAME=example.com Class=IN(1) TTL=86400, RDLEN=4)
+076578616d706c6503636f6d00 0001 0001 00015180 0004
+# Address=192.0.2.2
+c0000202
diff --git a/src/lib/dns/tests/testdata/message_fromWire21.spec b/src/lib/dns/tests/testdata/message_fromWire21.spec
new file mode 100644
index 0000000..cd6aac9
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire21.spec
@@ -0,0 +1,20 @@
+#
+# A non realistic DNS response message containing mixed types of RRs in the
+# additional section in a mixed order.
+#
+
+[custom]
+sections: header:question:a/1:aaaa:a/2
+[header]
+qr: 1
+arcount: 3
+[question]
+name: www.example.com
+rrtype: A
+[a/1]
+as_rr: True
+[aaaa]
+as_rr: True
+[a/2]
+as_rr: True
+address: 192.0.2.2
diff --git a/src/lib/dns/tests/testdata/message_fromWire21.wire b/src/lib/dns/tests/testdata/message_fromWire21.wire
new file mode 100644
index 0000000..14cfcc0
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire21.wire
@@ -0,0 +1,28 @@
+###
+### This data file was auto-generated from message_fromWire21.spec
+###
+
+# Header Section
+# ID=4149 QR=Response Opcode=QUERY(0) Rcode=NOERROR(0)
+1035 8000
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=3
+0001 0000 0000 0003
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# A RR (QNAME=example.com Class=IN(1) TTL=86400, RDLEN=4)
+076578616d706c6503636f6d00 0001 0001 00015180 0004
+# Address=192.0.2.1
+c0000201
+
+# AAAA RR (QNAME=example.com Class=IN(1) TTL=86400, RDLEN=16)
+076578616d706c6503636f6d00 001c 0001 00015180 0010
+# Address=2001:db8::1
+20010db8000000000000000000000001
+
+# A RR (QNAME=example.com Class=IN(1) TTL=86400, RDLEN=4)
+076578616d706c6503636f6d00 0001 0001 00015180 0004
+# Address=192.0.2.2
+c0000202
diff --git a/src/lib/dns/tests/testdata/message_fromWire22.spec b/src/lib/dns/tests/testdata/message_fromWire22.spec
new file mode 100644
index 0000000..a52523b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire22.spec
@@ -0,0 +1,14 @@
+#
+# A simple DNS message containing one SOA RR in the answer section.  This is
+# intended to be trimmed to emulate a bogus message.
+#
+
+[custom]
+sections: header:question:soa
+[header]
+qr: 1
+ancount: 1
+[question]
+rrtype: SOA
+[soa]
+as_rr: True
diff --git a/src/lib/dns/tests/testdata/message_fromWire22.wire b/src/lib/dns/tests/testdata/message_fromWire22.wire
new file mode 100644
index 0000000..69c3254
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire22.wire
@@ -0,0 +1,20 @@
+###
+### This data file was auto-generated from message_fromWire22.spec
+###
+
+# Header Section
+# ID=4149 QR=Response Opcode=QUERY(0) Rcode=NOERROR(0)
+1035 8000
+# QDCNT=1, ANCNT=1, NSCNT=0, ARCNT=0
+0001 0001 0000 0000
+
+# Question Section
+# QNAME=example.com. QTYPE=SOA(6) QCLASS=IN(1)
+076578616d706c6503636f6d00 0006 0001
+
+# SOA RR (QNAME=example.com Class=IN(1) TTL=86400, RDLEN=54)
+076578616d706c6503636f6d00 0006 0001 00015180 0036
+# NNAME=ns.example.com RNAME=root.example.com
+026e73076578616d706c6503636f6d00 04726f6f74076578616d706c6503636f6d00
+# SERIAL(2010012601) REFRESH(3600) RETRY(300) EXPIRE(3600000) MINIMUM(1200)
+77ce5bb9 00000e10 0000012c 0036ee80 000004b0
diff --git a/src/lib/dns/tests/testdata/message_fromWire3 b/src/lib/dns/tests/testdata/message_fromWire3
new file mode 100644
index 0000000..9bd536a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire3
@@ -0,0 +1,22 @@
+#
+# A simple DNS query message with a valid EDNS0 OPT RR, DO bit off
+# ID = 0x1035
+# QR=0 (query), Opcode=0, RD=1 (other fields are 0)
+# QDCOUNT=1, ANCOUNT=0, NSCOUNT=0, ARCOUNT=1
+# Question: test.example.com. IN A
+1035 0100
+0001 0000 0000 0001
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+0001 0001
+# EDNS0 OPT RR
+# owner name: "."
+00
+# TYPE: OPT (41 = 0x29)
+00 29
+# CLASS (= UDP size): 4096
+1000
+# TTL (extended RCODE and flags): RCODE=0, version=0, flags=0
+0000 0000
+# RDLEN = 0
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire4 b/src/lib/dns/tests/testdata/message_fromWire4
new file mode 100644
index 0000000..23eb7cf
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire4
@@ -0,0 +1,23 @@
+#
+# A simple DNS query message with a bogus EDNS0 OPT RR (included in the
+# answer section)
+# ID = 0x1035
+# QR=0 (query), Opcode=0, RD=1 (other fields are 0)
+# QDCOUNT=1, ANCOUNT=1, NSCOUNT=0, ARCOUNT=0
+# Question: test.example.com. IN A
+1035 0100
+0001 0001 0000 0000
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+0001 0001
+# EDNS0 OPT RR
+# owner name: "."
+00
+# TYPE: OPT (41 = 0x29)
+00 29
+# CLASS (= UDP size): 4096
+1000
+# TTL (extended RCODE and flags): RCODE=0, version=0, flags=DO
+0000 8000
+# RDLEN = 0
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire5 b/src/lib/dns/tests/testdata/message_fromWire5
new file mode 100644
index 0000000..6f08d22
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire5
@@ -0,0 +1,33 @@
+#
+# A simple DNS query message with multiple EDNS0 OPT RRs (bogus)
+# ID = 0x1035
+# QR=0 (query), Opcode=0, RD=1 (other fields are 0)
+# QDCOUNT=1, ANCOUNT=0, NSCOUNT=0, ARCOUNT=2
+# Question: test.example.com. IN A
+1035 0100
+0001 0000 0000 0002
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+0001 0001
+# EDNS0 OPT RR (1st)
+# owner name: "."
+00
+# TYPE: OPT (41 = 0x29)
+00 29
+# CLASS (= UDP size): 4096
+1000
+# TTL (extended RCODE and flags): RCODE=0, version=0, flags=DO
+0000 8000
+# RDLEN = 0
+0000
+# EDNS0 OPT RR (2nd)
+# owner name: "."
+00
+# TYPE: OPT (41 = 0x29)
+00 29
+# CLASS (= UDP size): 4096
+1000
+# TTL (extended RCODE and flags): RCODE=0, version=0, flags=DO
+0000 8000
+# RDLEN = 0
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire6 b/src/lib/dns/tests/testdata/message_fromWire6
new file mode 100644
index 0000000..2783fd0
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire6
@@ -0,0 +1,23 @@
+#
+# A simple DNS query message with EDNS0 OPT RRs of non root name (bogus)
+# ID = 0x1035
+# QR=0 (query), Opcode=0, RD=1 (other fields are 0)
+# QDCOUNT=1, ANCOUNT=0, NSCOUNT=0, ARCOUNT=1
+1035 0100
+0001 0000 0000 0001
+# Question: test.example.com. IN A
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+0001 0001
+# EDNS0 OPT RR
+# owner name: "example.com"
+#(7) e  x  a  m  p  l  e (3) c  o  m  .
+ 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+# TYPE: OPT (41 = 0x29)
+00 29
+# CLASS (= UDP size): 4096
+1000
+# TTL (extended RCODE and flags): RCODE=0, version=0, flags=DO
+0000 8000
+# RDLEN = 0
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire7 b/src/lib/dns/tests/testdata/message_fromWire7
new file mode 100644
index 0000000..4d85314
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire7
@@ -0,0 +1,27 @@
+#
+# A simple DNS query message with EDNS0 OPT RRs of compressed owner name
+# pointing to root (is this bogus?)
+# ID = 0x1035
+# QR=0 (query), Opcode=0, RD=1 (other fields are 0)
+# QDCOUNT=1, ANCOUNT=0, NSCOUNT=0, ARCOUNT=1
+#0 1  2 3
+1035 0100
+#4 5  6 7  8 9 10 1
+0001 0000 0000 0001
+# Question: test.example.com. IN A
+# 2  3  4  5  6  7  8  9 20  1  2  3  4  5  6  7  8  9
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+0001 0001
+# EDNS0 OPT RR
+# owner name: "example.com"
+# pointer = 29 (end of question section)
+ c0 1d
+# TYPE: OPT (41 = 0x29)
+00 29
+# CLASS (= UDP size): 4096
+1000
+# TTL (extended RCODE and flags): RCODE=0, version=0, flags=DO
+0000 8000
+# RDLEN = 0
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire8 b/src/lib/dns/tests/testdata/message_fromWire8
new file mode 100644
index 0000000..c950b5e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire8
@@ -0,0 +1,22 @@
+#
+# A simple DNS query message with a valid EDNS0 OPT RR (but unusual UDP size)
+# ID = 0x1035
+# QR=0 (query), Opcode=0, RD=1 (other fields are 0)
+# QDCOUNT=1, ANCOUNT=0, NSCOUNT=0, ARCOUNT=1
+# Question: test.example.com. IN A
+1035 0100
+0001 0000 0000 0001
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+0001 0001
+# EDNS0 OPT RR
+# owner name: "."
+00
+# TYPE: OPT (41 = 0x29)
+00 29
+# CLASS (= UDP size): 500
+01f4
+# TTL (extended RCODE and flags): RCODE=0, version=0, flags=DO
+0000 8000
+# RDLEN = 0
+0000
diff --git a/src/lib/dns/tests/testdata/message_fromWire9 b/src/lib/dns/tests/testdata/message_fromWire9
new file mode 100644
index 0000000..f9ff950
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_fromWire9
@@ -0,0 +1,22 @@
+#
+# A simple DNS query message with an unsupported version of EDNS0
+# ID = 0x1035
+# QR=0 (query), Opcode=0, RD=1 (other fields are 0)
+# QDCOUNT=1, ANCOUNT=0, NSCOUNT=0, ARCOUNT=1
+# Question: test.example.com. IN A
+1035 0100
+0001 0000 0000 0001
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+0001 0001
+# EDNS0 OPT RR
+# owner name: "."
+00
+# TYPE: OPT (41 = 0x29)
+00 29
+# CLASS (= UDP size): 4096
+1000
+# TTL (extended RCODE and flags): RCODE=0, version=1, flags=DO
+0001 8000
+# RDLEN = 0
+0000
diff --git a/src/lib/dns/tests/testdata/message_toText1.spec b/src/lib/dns/tests/testdata/message_toText1.spec
new file mode 100644
index 0000000..b31310e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toText1.spec
@@ -0,0 +1,24 @@
+#
+# A standard DNS message (taken from an invocation of dig)
+#
+
+[custom]
+sections: header:question:a/1:ns:a/2
+[header]
+id: 29174
+qr: 1
+aa: 1
+ancount: 1
+nscount: 1
+arcount: 1
+[question]
+name: www.example.com
+[a/1]
+as_rr: True
+rr_name: www.example.com
+address: 192.0.2.80
+[ns]
+as_rr: True
+[a/2]
+as_rr: True
+rr_name: ns.example.com
diff --git a/src/lib/dns/tests/testdata/message_toText1.txt b/src/lib/dns/tests/testdata/message_toText1.txt
new file mode 100644
index 0000000..58c7239
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toText1.txt
@@ -0,0 +1,14 @@
+;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29174
+;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
+
+;; QUESTION SECTION:
+;www.example.com. IN A
+
+;; ANSWER SECTION:
+www.example.com. 86400 IN A 192.0.2.80
+
+;; AUTHORITY SECTION:
+example.com. 86400 IN NS ns.example.com.
+
+;; ADDITIONAL SECTION:
+ns.example.com. 86400 IN A 192.0.2.1
diff --git a/src/lib/dns/tests/testdata/message_toText1.wire b/src/lib/dns/tests/testdata/message_toText1.wire
new file mode 100644
index 0000000..2a959bd
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toText1.wire
@@ -0,0 +1,28 @@
+###
+### This data file was auto-generated from message_toText1.spec
+###
+
+# Header Section
+# ID=29174 QR=Response Opcode=QUERY(0) Rcode=NOERROR(0) AA
+71f6 8400
+# QDCNT=1, ANCNT=1, NSCNT=1, ARCNT=1
+0001 0001 0001 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# A RR (QNAME=www.example.com Class=IN(1) TTL=86400, RDLEN=4)
+03777777076578616d706c6503636f6d00 0001 0001 00015180 0004
+# Address=192.0.2.80
+c0000250
+
+# NS RR (QNAME=example.com Class=IN(1) TTL=86400, RDLEN=16)
+076578616d706c6503636f6d00 0002 0001 00015180 0010
+# NS name=ns.example.com
+026e73076578616d706c6503636f6d00
+
+# A RR (QNAME=ns.example.com Class=IN(1) TTL=86400, RDLEN=4)
+026e73076578616d706c6503636f6d00 0001 0001 00015180 0004
+# Address=192.0.2.1
+c0000201
diff --git a/src/lib/dns/tests/testdata/message_toText2.spec b/src/lib/dns/tests/testdata/message_toText2.spec
new file mode 100644
index 0000000..978aab3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toText2.spec
@@ -0,0 +1,14 @@
+#
+# A standard DNS message with EDNS (taken from an invocation of dig)
+#
+
+[custom]
+sections: header:question:edns
+[header]
+id: 45981
+qr: 1
+rcode: refused
+arcount: 1
+[question]
+[edns]
+do: 1
diff --git a/src/lib/dns/tests/testdata/message_toText2.txt b/src/lib/dns/tests/testdata/message_toText2.txt
new file mode 100644
index 0000000..42cc2c1
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toText2.txt
@@ -0,0 +1,8 @@
+;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 45981
+;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
+
+;; OPT PSEUDOSECTION:
+; EDNS: version: 0, flags: do; udp: 4096
+
+;; QUESTION SECTION:
+;example.com. IN A
diff --git a/src/lib/dns/tests/testdata/message_toText2.wire b/src/lib/dns/tests/testdata/message_toText2.wire
new file mode 100644
index 0000000..1047b63
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toText2.wire
@@ -0,0 +1,19 @@
+###
+### This data file was auto-generated from message_toText2.spec
+###
+
+# Header Section
+# ID=45981 QR=Response Opcode=QUERY(0) Rcode=REFUSED(5)
+b39d 8005
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=example.com. QTYPE=A(1) QCLASS=IN(1)
+076578616d706c6503636f6d00 0001 0001
+
+# EDNS OPT RR
+# NAME=. TYPE=OPT(41) UDPSize=4096 ExtRcode=0 Version=0 DO=1
+00 0029 1000 0000 8000
+# RDLEN=0
+0000
diff --git a/src/lib/dns/tests/testdata/message_toText3.spec b/src/lib/dns/tests/testdata/message_toText3.spec
new file mode 100644
index 0000000..a74ea1b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toText3.spec
@@ -0,0 +1,31 @@
+#
+# A standard DNS message with TSIG (taken from an invocation of dig)
+#
+
+[custom]
+sections: header:question:a/1:ns:a/2:tsig
+[header]
+id: 10140
+qr: 1
+aa: 1
+ancount: 1
+nscount: 1
+arcount: 2
+[question]
+name: www.example.com
+[a/1]
+as_rr: True
+rr_name: www.example.com
+address: 192.0.2.80
+[ns]
+as_rr: True
+[a/2]
+as_rr: True
+rr_name: ns.example.com
+[tsig]
+as_rr: True
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 1304384318
+original_id: 10140
+mac: 0x5257c80396f2fa95b20c77ae9a652fb2
diff --git a/src/lib/dns/tests/testdata/message_toText3.txt b/src/lib/dns/tests/testdata/message_toText3.txt
new file mode 100644
index 0000000..359b9c5
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toText3.txt
@@ -0,0 +1,17 @@
+;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10140
+;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2
+
+;; QUESTION SECTION:
+;www.example.com. IN A
+
+;; ANSWER SECTION:
+www.example.com. 86400 IN A 192.0.2.80
+
+;; AUTHORITY SECTION:
+example.com. 86400 IN NS ns.example.com.
+
+;; ADDITIONAL SECTION:
+ns.example.com. 86400 IN A 192.0.2.1
+
+;; TSIG PSEUDOSECTION:
+www.example.com. 0 ANY TSIG hmac-md5.sig-alg.reg.int. 1304384318 300 16 UlfIA5by+pWyDHeummUvsg== 10140 NOERROR 0
diff --git a/src/lib/dns/tests/testdata/message_toText3.wire b/src/lib/dns/tests/testdata/message_toText3.wire
new file mode 100644
index 0000000..eb3632b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toText3.wire
@@ -0,0 +1,39 @@
+###
+### This data file was auto-generated from message_toText3.spec
+###
+
+# Header Section
+# ID=10140 QR=Response Opcode=QUERY(0) Rcode=NOERROR(0) AA
+279c 8400
+# QDCNT=1, ANCNT=1, NSCNT=1, ARCNT=2
+0001 0001 0001 0002
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# A RR (QNAME=www.example.com Class=IN(1) TTL=86400, RDLEN=4)
+03777777076578616d706c6503636f6d00 0001 0001 00015180 0004
+# Address=192.0.2.80
+c0000250
+
+# NS RR (QNAME=example.com Class=IN(1) TTL=86400, RDLEN=16)
+076578616d706c6503636f6d00 0002 0001 00015180 0010
+# NS name=ns.example.com
+026e73076578616d706c6503636f6d00
+
+# A RR (QNAME=ns.example.com Class=IN(1) TTL=86400, RDLEN=4)
+026e73076578616d706c6503636f6d00 0001 0001 00015180 0004
+# Address=192.0.2.1
+c0000201
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1304384318 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004dbf533e 012c
+# MAC Size=16 MAC=(see hex)
+0010 5257c80396f2fa95b20c77ae9a652fb2
+# Original-ID=10140 Error=0
+279c 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/message_toWire1 b/src/lib/dns/tests/testdata/message_toWire1
new file mode 100644
index 0000000..daeb85a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toWire1
@@ -0,0 +1,22 @@
+#
+# A simple DNS query message
+# ID = 0x1035
+# QR=1 (response), Opcode=0, AA=1, RD=1 (other fields are 0)
+# QDCOUNT=1, ANCOUNT=2, other COUNTS=0
+# Question: test.example.com. IN A
+# Answer:
+#  test.example.com. 3600 IN A 192.0.2.1
+#  test.example.com. 7200 IN A 192.0.2.2
+#
+1035 8500
+0001 0002 0000 0000
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+0001 0001
+# same name, fully compressed
+c0 0c
+# TTL=3600, A, IN, RDLENGTH=4, RDATA
+0001 0001 00000e10 0004 c0 00 02 01
+# mostly same, with the slight difference in RDATA
+c0 0c
+0001 0001 00000e10 0004 c0 00 02 02
diff --git a/src/lib/dns/tests/testdata/message_toWire2.spec b/src/lib/dns/tests/testdata/message_toWire2.spec
new file mode 100644
index 0000000..d256052
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toWire2.spec
@@ -0,0 +1,21 @@
+#
+# A simple DNS query message with TSIG signed
+#
+
+[custom]
+sections: header:question:tsig
+[header]
+id: 0x2d65
+rd: 1
+arcount: 1
+[question]
+name: www.example.com
+[tsig]
+as_rr: True
+# TSIG QNAME won't be compressed
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8877a
+mac_size: 16
+mac: 0x227026ad297beee721ce6c6fff1e9ef3
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/message_toWire2.wire b/src/lib/dns/tests/testdata/message_toWire2.wire
new file mode 100644
index 0000000..a495253
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toWire2.wire
@@ -0,0 +1,24 @@
+###
+### This data file was auto-generated from message_toWire2.spec
+###
+
+# Header Section
+# ID=11621 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+2d65 0100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=16 MAC=(see hex)
+0010 227026ad297beee721ce6c6fff1e9ef3
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/message_toWire3.spec b/src/lib/dns/tests/testdata/message_toWire3.spec
new file mode 100644
index 0000000..c8e9453
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toWire3.spec
@@ -0,0 +1,22 @@
+#
+# A simple DNS query message with EDNS and TSIG
+#
+
+[custom]
+sections: header:question:edns:tsig
+[header]
+id: 0x06cd
+rd: 1
+arcount: 2
+[question]
+name: www.example.com
+[edns]
+[tsig]
+as_rr: True
+# TSIG QNAME won't be compressed
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4db60d1f
+mac_size: 16
+mac: 0x93444053881c83d7eb120e86f25b369e
+original_id: 0x06cd
diff --git a/src/lib/dns/tests/testdata/message_toWire3.wire b/src/lib/dns/tests/testdata/message_toWire3.wire
new file mode 100644
index 0000000..46808b9
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toWire3.wire
@@ -0,0 +1,30 @@
+###
+### This data file was auto-generated from message_toWire3.spec
+###
+
+# Header Section
+# ID=1741 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+06cd 0100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=2
+0001 0000 0000 0002
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# EDNS OPT RR
+# NAME=. TYPE=OPT(41) UDPSize=4096 ExtRcode=0 Version=0 DO=0
+00 0029 1000 0000 0000
+# RDLEN=0
+0000
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1303776543 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004db60d1f 012c
+# MAC Size=16 MAC=(see hex)
+0010 93444053881c83d7eb120e86f25b369e
+# Original-ID=1741 Error=0
+06cd 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/message_toWire4.spec b/src/lib/dns/tests/testdata/message_toWire4.spec
new file mode 100644
index 0000000..aab7e10
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toWire4.spec
@@ -0,0 +1,27 @@
+#
+# Truncated DNS response with TSIG signed
+# This is expected to be a response to "fromWire17"
+#
+
+[custom]
+sections: header:question:tsig
+[header]
+id: 0x22c2
+rd: 1
+qr: 1
+aa: 1
+# It's "truncated":
+tc: 1
+arcount: 1
+[question]
+name: www.example.com
+rrtype: TXT
+[tsig]
+as_rr: True
+# TSIG QNAME won't be compressed
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4e179212
+mac_size: 16
+mac: 0x88adc3811d1d6bec7c684438906fc694
+original_id: 0x22c2
diff --git a/src/lib/dns/tests/testdata/message_toWire4.wire b/src/lib/dns/tests/testdata/message_toWire4.wire
new file mode 100644
index 0000000..d2cda30
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toWire4.wire
@@ -0,0 +1,24 @@
+###
+### This data file was auto-generated from message_toWire4.spec
+###
+
+# Header Section
+# ID=8898 QR=Response Opcode=QUERY(0) Rcode=NOERROR(0) AA TC RD
+22c2 8700
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=TXT(16) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0010 0001
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1310167570 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004e179212 012c
+# MAC Size=16 MAC=(see hex)
+0010 88adc3811d1d6bec7c684438906fc694
+# Original-ID=8898 Error=0
+22c2 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/message_toWire5.spec b/src/lib/dns/tests/testdata/message_toWire5.spec
new file mode 100644
index 0000000..e316833
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toWire5.spec
@@ -0,0 +1,36 @@
+#
+# A longest possible (without EDNS) DNS response with TSIG, i.e. total
+# length should be 512 bytes.
+#
+
+[custom]
+sections: header:question:txt/1:txt/2:tsig
+[header]
+id: 0xd6e2
+rd: 1
+qr: 1
+aa: 1
+ancount: 2
+arcount: 1
+[question]
+name: www.example.com
+rrtype: TXT
+[txt/1]
+as_rr: True
+# QNAME is fully compressed
+rr_name: ptr=12
+string: 0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcde
+[txt/2]
+as_rr: True
+# QNAME is fully compressed
+rr_name: ptr=12
+string: 0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0
+[tsig]
+as_rr: True
+# TSIG QNAME won't be compressed
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4e17b38d
+mac_size: 16
+mac: 0xbe2ba477373d2496891e2fda240ee4ec
+original_id: 0xd6e2
diff --git a/src/lib/dns/tests/testdata/message_toWire5.wire b/src/lib/dns/tests/testdata/message_toWire5.wire
new file mode 100644
index 0000000..ef7ee6e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toWire5.wire
@@ -0,0 +1,34 @@
+###
+### This data file was auto-generated from message_toWire5.spec
+###
+
+# Header Section
+# ID=55010 QR=Response Opcode=QUERY(0) Rcode=NOERROR(0) AA RD
+d6e2 8500
+# QDCNT=1, ANCNT=2, NSCNT=0, ARCNT=1
+0001 0002 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=TXT(16) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0010 0001
+
+# TXT RR (QNAME=ptr=12 Class=IN(1) TTL=86400, RDLEN=256)
+c00c 0010 0001 00015180 0100
+# String Len=255, String="0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcde"
+ff 303132333435363738396162636465663031323334353637383961626364656630313233343536373839616263646566303132333435363738396162636465663031323334353637383961626364656630313233343536373839616263646566303132333435363738396162636465663031323334353637383961626364656630313233343536373839616263646566303132333435363738396162636465663031323334353637383961626364656630313233343536373839616263646566303132333435363738396162636465663031323334353637383961626364656630313233343536373839616263646566303132333435363738396162636465
+
+# TXT RR (QNAME=ptr=12 Class=IN(1) TTL=86400, RDLEN=114)
+c00c 0010 0001 00015180 0072
+# String Len=113, String="0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0"
+71 3031323334353637383961626364656630313233343536373839616263646566303132333435363738396162636465663031323334353637383961626364656630313233343536373839616263646566303132333435363738396162636465663031323334353637383961626364656630
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1310176141 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004e17b38d 012c
+# MAC Size=16 MAC=(see hex)
+0010 be2ba477373d2496891e2fda240ee4ec
+# Original-ID=55010 Error=0
+d6e2 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/message_toWire6 b/src/lib/dns/tests/testdata/message_toWire6
new file mode 100644
index 0000000..996c99c
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toWire6
@@ -0,0 +1,48 @@
+#
+# A simple DNS query message (with a signed response)
+# ID = 0x75c1
+# QR=1 (response), Opcode=0, AA=1, RD=1 (other fields are 0)
+# QDCOUNT=1, ANCOUNT=4, other COUNTS=0
+# Question: test.example.com. IN A
+# Answer:
+#  test.example.com. 3600 IN A 192.0.2.1
+#  test.example.com. 7200 IN A 192.0.2.2
+#
+75c1 8500
+0001 0004 0000 0000
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+0001 0001
+# same name, fully compressed
+c0 0c
+# TTL=3600, A, IN, RDLENGTH=4, RDATA
+0001 0001 00000e10 0004 c0 00 02 01
+# mostly same, with the slight difference in RDATA
+c0 0c
+0001 0001 00000e10 0004 c0 00 02 02
+
+# signature 1
+
+# same name
+c0 0c
+# RRSIG, IN, TTL=3600, RDLENGTH=0x28 TYPE_COV=A ALGO=5 (RSA/SHA-1) LABELS=3 ORIG_TTL=3600
+002e 0001 00000e10 0028 0001 05 03 00000e10
+# SIG_EXPIRY=20000101000000 SIG_INCEP=20000201000000 KEY_ID=12345
+386d4380 38962200 3039
+#(7) e  x  a  m  p  l  e (3) c  o  m  .
+ 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+# FAKEFAKEFAKE
+14 02 84 14 02 84 14 02 84
+
+# signature 2
+
+# same name
+c0 0c
+# RRSIG, IN, TTL=3600, RDLENGTH=0x28 TYPE_COV=A ALGO=3 (DSA/SHA-1) LABELS=3 ORIG_TTL=3600
+002e 0001 00000e10 0028 0001 03 03 00000e10
+# SIG_EXPIRY=20000101000000 SIG_INCEP=20000201000000 KEY_ID=12345
+386d4380 38962200 3039
+#(7) e  x  a  m  p  l  e (3) c  o  m  .
+ 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+# FAKEFAKEFAKE
+14 02 84 14 02 84 14 02 84
diff --git a/src/lib/dns/tests/testdata/message_toWire7 b/src/lib/dns/tests/testdata/message_toWire7
new file mode 100644
index 0000000..ba22634
--- /dev/null
+++ b/src/lib/dns/tests/testdata/message_toWire7
@@ -0,0 +1,35 @@
+#
+# A simple DNS query message (with a signed response)
+# ID = 0x75c1
+# QR=1 (response), Opcode=0, AA=1, RD=1 (other fields are 0)
+# QDCOUNT=1, ANCOUNT=1, ADCOUNT=0
+# Question: test.example.com. IN TXT
+# Answer:
+#  test.example.com. 3600 IN TXT aaaaa...
+#
+75c1 8700
+0001 0001 0000 0000
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+0010 0001
+# same name, fully compressed
+c0 0c
+# TTL=3600, TXT, IN, RDLENGTH=256, RDATA
+0010 0001 00000e10 0100 ff
+# 'a' repeated 255 times
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
+61 61 61 61 61 61 61 61 61 61 61 61 61 61 61
diff --git a/src/lib/dns/tests/testdata/name_fromWire1 b/src/lib/dns/tests/testdata/name_fromWire1
new file mode 100644
index 0000000..42fc61d
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_fromWire1
@@ -0,0 +1,14 @@
+#
+# a global14 compression pointer
+#
+000a85800001000300000003
+#  V i x   c o m
+0356697803636f6d0000020001c00c00
+02000100000e10000b05697372763102
+7061c00cc00c0002000100000e100009
+066e732d657874c00cc00c0002000100
+000e10000e036e733104676e61630363
+6f6d00c0250001000100000e100004cc
+98b886c03c0001000100000e100004cc
+98b840c051000100010002a14a0004c6
+97f8f6
diff --git a/src/lib/dns/tests/testdata/name_fromWire10 b/src/lib/dns/tests/testdata/name_fromWire10
new file mode 100644
index 0000000..65be775
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_fromWire10
@@ -0,0 +1,12 @@
+#
+# Too large name; should trigger an exception.
+#
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 040102030400
diff --git a/src/lib/dns/tests/testdata/name_fromWire11 b/src/lib/dns/tests/testdata/name_fromWire11
new file mode 100644
index 0000000..32184f6
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_fromWire11
@@ -0,0 +1,12 @@
+#
+# A name with possible maximum number of labels; should be accepted safely.
+#
+01000100010001000100 01000100010001000100 01000100010001000100
+01000100010001000100 01000100010001000100 01000100010001000100
+01000100010001000100 01000100010001000100 01000100010001000100
+01000100010001000100 01000100010001000100 01000100010001000100
+01000100010001000100 01000100010001000100 01000100010001000100
+01000100010001000100 01000100010001000100 01000100010001000100
+01000100010001000100 01000100010001000100 01000100010001000100
+01000100010001000100 01000100010001000100 01000100010001000100
+01000100010001000100 0100010000
diff --git a/src/lib/dns/tests/testdata/name_fromWire12 b/src/lib/dns/tests/testdata/name_fromWire12
new file mode 100644
index 0000000..073adda
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_fromWire12
@@ -0,0 +1,13 @@
+#
+# Wire format including an invalid label length
+#
+#(1) a (7) e  x  a  m  p  l  e
+ 01 61 07 65 78 61 6d 70 6c 65
+# invalid label length: 64
+40
+# a "label" of 64 characters: shouldn't be parsed
+00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
+10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
+20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
+30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
+00
diff --git a/src/lib/dns/tests/testdata/name_fromWire13 b/src/lib/dns/tests/testdata/name_fromWire13
new file mode 100644
index 0000000..447f54b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_fromWire13
@@ -0,0 +1,5 @@
+#
+# A name including all "printable" characters
+#
+
+3f2122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f404142434445464748494a4b4c4d4e4f505152535455565758595a5b5c5d5e5f1f606162636465666768696a6b6c6d6e6f707172737475767778797a7b7c7d7e00
diff --git a/src/lib/dns/tests/testdata/name_fromWire14 b/src/lib/dns/tests/testdata/name_fromWire14
new file mode 100644
index 0000000..3123aec
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_fromWire14
@@ -0,0 +1,7 @@
+#
+# A name including all "non-printable" characters
+#
+
+3f000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f207f808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c
+3f9d9e9fa0a1a2a3a4a5a6a7a8a9aaabacadaeafb0b1b2b3b4b5b6b7b8b9babbbcbdbebfc0c1c2c3c4c5c6c7c8c9cacbcccdcecfd0d1d2d3d4d5d6d7d8d9dadb
+24dcdddedfe0e1e2e3e4e5e6e7e8e9eaebecedeeeff0f1f2f3f4f5f6f7f8f9fafbfcfdfeff00
diff --git a/src/lib/dns/tests/testdata/name_fromWire2 b/src/lib/dns/tests/testdata/name_fromWire2
new file mode 100644
index 0000000..0758a68
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_fromWire2
@@ -0,0 +1,15 @@
+#
+# bogus label character (looks like a local compression pointer)
+#
+000a85800001000300000003
+#this is the bogus label character:
+83
+76697803636f6d0000020001c00c00
+02000100000e10000b05697372763102
+7061c00cc00c0002000100000e100009
+066e732d657874c00cc00c0002000100
+000e10000e036e733104676e61630363
+6f6d00c0250001000100000e100004cc
+98b886c03c0001000100000e100004cc
+98b840c051000100010002a14a0004c6
+97f8f6
diff --git a/src/lib/dns/tests/testdata/name_fromWire3_1 b/src/lib/dns/tests/testdata/name_fromWire3_1
new file mode 100644
index 0000000..e38efcc
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_fromWire3_1
@@ -0,0 +1,11 @@
+#
+# a bad compression pointer starting with the bits 1111 (too big pointer)
+#
+000a85800001000300000003
+03766978 03636f6d 00 0002 0001
+f00c 0002 0001 0000 0e10 000b 056973727631 027061 c00c
+c00c 0002 0001 0000 0e10 0009 066e732d657874 c00c
+c00c 0002 0001 0000 0e10 000e 036e7331 04676e6163 03636f6d 00
+c025 0001 0001 0000 0e10 0004 cc98b886
+c03c 0001 0001 0000 0e10 0004 cc98b840
+c051 0001 0001 0002 a14a 0004 c697f8f6
diff --git a/src/lib/dns/tests/testdata/name_fromWire3_2 b/src/lib/dns/tests/testdata/name_fromWire3_2
new file mode 100644
index 0000000..c377bb1
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_fromWire3_2
@@ -0,0 +1,13 @@
+#
+# a bad compression pointer due to forward reference of 0x30 to
+# another compression pointer with a valid backreference
+#
+000a85800001000300000003
+03766978 03636f6d 00 0002 0001
+#'30' is the forward reference, 'c00c' at the end is the valid pointer:
+c030 0002 0001 0000 0e10 000b 056973727631 027061 c00c
+c00c 0002 0001 0000 0e10 0009 066e732d657874 c00c
+c00c 0002 0001 0000 0e10 000e 036e7331 04676e6163 03636f6d 00
+c025 0001 0001 0000 0e10 0004 cc98b886
+c03c 0001 0001 0000 0e10 0004 cc98b840
+c051 0001 0001 0002 a14a 0004 c697f8f6
diff --git a/src/lib/dns/tests/testdata/name_fromWire4 b/src/lib/dns/tests/testdata/name_fromWire4
new file mode 100644
index 0000000..dba6035
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_fromWire4
@@ -0,0 +1,45 @@
+#
+# invalid name length, pointer at offset 0x0226 points to
+# long name at offset 0x25
+#
+000a 8580 0001 0003 0000 0001
+03 766978 03 636f6d 00 0002 0001
+c00c 0002 0001 00000e10
+0101
+# long name starts here
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a
+03616263 0358595a 03616263 0358595a
+03414243 0378797a 03414243 0378797a 00
+# compression pointer start here and refers back to long name
+c023 0002 0001 00000e10 0009 066e732d657874 c00c
+c00c 0002 0001 00000e10 000e 036e733104676e616303636f6d00
+c025 0001 0001 00000e10 0004 cc98b886
diff --git a/src/lib/dns/tests/testdata/name_fromWire6 b/src/lib/dns/tests/testdata/name_fromWire6
new file mode 100644
index 0000000..fa1abe6
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_fromWire6
@@ -0,0 +1,14 @@
+#
+# a bad pointer
+#
+000a85800001000300000003
+# the bad pointer is f00c (offset = 300c) which is too large
+0376697803636f6d0000020001 f00c 00
+02000100000e10000b05697372763102
+7061c00cc00c0002000100000e100009
+066e732d657874c00cc00c0002000100
+000e10000e036e733104676e61630363
+6f6d00c0250001000100000e100004cc
+98b886c03c0001000100000e100004cc
+98b840c051000100010002a14a0004c6
+97f8f6
diff --git a/src/lib/dns/tests/testdata/name_fromWire7 b/src/lib/dns/tests/testdata/name_fromWire7
new file mode 100644
index 0000000..2dedd4a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_fromWire7
@@ -0,0 +1,6 @@
+#
+# input ends unexpectedly
+#
+000a85800001000300000003
+# parser will start at the ending 'c0', which is an incomplete sequence.
+0376697803636f6d0000020001 c0
diff --git a/src/lib/dns/tests/testdata/name_fromWire8 b/src/lib/dns/tests/testdata/name_fromWire8
new file mode 100644
index 0000000..575563d
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_fromWire8
@@ -0,0 +1,27 @@
+#
+# many hops of compression.  absolutely many, but should be decompressed.
+#
+000a85800001000300000013
+03 766978 03 636f6d 00 0002 0001
+c00c 0002 0001 00000e10 000b 056973727631027061 c00c
+c019 0002 0001 00000e10 0009 066e732d657874 c00c
+c030 0002 0001 00000e10 000e 036e7331 04676e6163 03636f6d 00
+c045 0001 0001 00000e10 0004 cc98b886
+c05f 0001 0001 00000e10 0004 cc98b840
+c06f 0001 0001 0002a14a 0004 c697f8f6
+c07f 0001 0001 0002a14a 0004 c697f8f6
+c08f 0001 0001 0002a14a 0004 c697f8f6
+c09f 0001 0001 0002a14a 0004 c697f8f6
+c0af 0001 0001 0002a14a 0004 c697f8f6
+c0bf 0001 0001 0002a14a 0004 c697f8f6
+c0cf 0001 0001 0002a14a 0004 c697f8f6
+c0df 0001 0001 0002a14a 0004 c697f8f6
+c0ef 0001 0001 0002a14a 0004 c697f8f6
+c0ff 0001 0001 0002a14a 0004 c697f8f6
+c10f 0001 0001 0002a14a 0004 c697f8f6
+c11f 0001 0001 0002a14a 0004 c697f8f6
+c12f 0001 0001 0002a14a 0004 c697f8f6
+c13f 0001 0001 0002a14a 0004 c697f8f6
+c14f 0001 0001 0002a14a 0004 c697f8f6
+c15f 0001 0001 0002a14a 0004 c697f8f6
+c16f 0001 0001 0002a14a 0004 c697f8f6
diff --git a/src/lib/dns/tests/testdata/name_fromWire9 b/src/lib/dns/tests/testdata/name_fromWire9
new file mode 100644
index 0000000..79b2978
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_fromWire9
@@ -0,0 +1,12 @@
+#
+# A possible longest name; should be accepted safely.
+#
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 09010203040506070809 09010203040506070809
+09010203040506070809 0301020300
diff --git a/src/lib/dns/tests/testdata/name_toWire1 b/src/lib/dns/tests/testdata/name_toWire1
new file mode 100644
index 0000000..c06ec4b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_toWire1
@@ -0,0 +1,12 @@
+#
+# Rendering 3 names with compression.  [x] means a compression pointer pointing
+# to offset 'x'.
+#
+#bytes:
+# 0 1 2 3 4 5 6 7 8 9 a b c d e
+#(1)a(7)e x a m p l e(3)c o m .
+ 0161076578616d706c6503636f6d00
+#(1)b [2]
+ 0162c002
+#   a . e x a m p l e . o r g .
+ 0161076578616d706c65036f726700
diff --git a/src/lib/dns/tests/testdata/name_toWire2 b/src/lib/dns/tests/testdata/name_toWire2
new file mode 100644
index 0000000..2377121
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_toWire2
@@ -0,0 +1,14 @@
+#
+# Rendering names in a large buffer.  [x] means a compression pointer pointing
+# to offset 'x'.
+#
+#bytes:
+#3f 40
+#ff 00
+#(1) a (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 01 61 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+#[3fff] = a.example.com: can be compressed
+ ffff
+#(1) b(7)  e  x  a  m  p  l  e (3) c  o  m  .; cannot compress as the pointer
+#                                            (0x4001) would exceed 0x4000
+ 01 62 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
diff --git a/src/lib/dns/tests/testdata/name_toWire3 b/src/lib/dns/tests/testdata/name_toWire3
new file mode 100644
index 0000000..08c1474
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_toWire3
@@ -0,0 +1,14 @@
+#
+# Rendering names including one explicitly uncompressed.
+# [x] means a compression pointer pointing to offset 'x'.
+#
+# 0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 (bytes)
+#(1) a (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 01 61 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+
+#15                                        29 (bytes)
+#(1) b (7) e  x  a  m  p  l  e (3) c  o  m  .; specified to be not compressed,
+#                                              but can be pointed to from others
+ 01 62 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+#[0f] referring to the second (uncompressed name)
+ c0 0f
diff --git a/src/lib/dns/tests/testdata/name_toWire4 b/src/lib/dns/tests/testdata/name_toWire4
new file mode 100644
index 0000000..740d718
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_toWire4
@@ -0,0 +1,16 @@
+#
+# Rendering 3 names with compression, including one resulting in a chain of
+# pointers (the last one).
+# legend: [x] means a compression pointer pointing to offset 'x'.
+#bytes:
+#00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e
+#(1) a (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 01 61 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+
+#0f 10 11 12
+#(1) b  [2] (b.example.com.)
+ 01 62 c0 02
+
+#13 14
+# [0f]: (b.example.com.)
+ c0 0f
diff --git a/src/lib/dns/tests/testdata/name_toWire5.spec b/src/lib/dns/tests/testdata/name_toWire5.spec
new file mode 100644
index 0000000..87e140d
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_toWire5.spec
@@ -0,0 +1,19 @@
+#
+# A sequence of names that would be compressed case-sensitive manner.
+# First name: "a.example.com"
+# Second name: "b.eXample.com".  Due to case-sensitive comparison only "com"
+# can be compressed.
+# Third name: "c.eXample.com".  "eXample.com" part matches that of the second
+# name and can be compressed.
+#
+
+[custom]
+sections: name/1:name/2:name/3
+[name/1]
+name: a.example.com
+[name/2]
+name: b.eXample
+pointer: 10
+[name/3]
+name: c
+pointer: 17
diff --git a/src/lib/dns/tests/testdata/name_toWire5.wire b/src/lib/dns/tests/testdata/name_toWire5.wire
new file mode 100644
index 0000000..c6e62ed
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_toWire5.wire
@@ -0,0 +1,12 @@
+###
+### This data file was auto-generated from name_toWire5.spec
+###
+
+# DNS Name: a.example.com
+0161076578616d706c6503636f6d00
+
+# DNS Name: b.eXample + compression pointer: 10
+0162076558616d706c65c00a
+
+# DNS Name: c + compression pointer: 17
+0163c011
diff --git a/src/lib/dns/tests/testdata/name_toWire6.spec b/src/lib/dns/tests/testdata/name_toWire6.spec
new file mode 100644
index 0000000..a536f5d
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_toWire6.spec
@@ -0,0 +1,19 @@
+#
+# A sequence of names that would be compressed both case-sensitive and
+# case-insensitive manner (unusual, but allowed).
+# First and second name: see name_toWire5.spec.
+# Third name: "c.b.EXAMPLE.com".  This is rendered with case-insensitive
+# compression, so "b.EXAMPLE.com" part of the name matches that of the
+# second name.
+#
+
+[custom]
+sections: name/1:name/2:name/3
+[name/1]
+name: a.example.com
+[name/2]
+name: b.eXample
+pointer: 10
+[name/3]
+name: c
+pointer: 15
diff --git a/src/lib/dns/tests/testdata/name_toWire6.wire b/src/lib/dns/tests/testdata/name_toWire6.wire
new file mode 100644
index 0000000..dcaa39f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_toWire6.wire
@@ -0,0 +1,12 @@
+###
+### This data file was auto-generated from name_toWire6.spec
+###
+
+# DNS Name: a.example.com
+0161076578616d706c6503636f6d00
+
+# DNS Name: b.eXample + compression pointer: 10
+0162076558616d706c65c00a
+
+# DNS Name: c + compression pointer: 15
+0163c00f
diff --git a/src/lib/dns/tests/testdata/name_toWire7 b/src/lib/dns/tests/testdata/name_toWire7
new file mode 100644
index 0000000..bff599f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_toWire7
@@ -0,0 +1,10 @@
+#
+# Rendering names including one explicitly uncompressed.
+# [x] means a compression pointer pointing to offset 'x'.
+#
+# 0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 (bytes)
+#(1) a (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 01 61 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+
+#[02] pointing to -> "example.com."
+ c0 02
diff --git a/src/lib/dns/tests/testdata/name_toWire8 b/src/lib/dns/tests/testdata/name_toWire8
new file mode 100644
index 0000000..d01093b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_toWire8
@@ -0,0 +1,7 @@
+#
+# Rendering names.
+# [x] means a compression pointer pointing to offset 'x'.
+#
+# 0  1  2  3  4  5  6  7  8  9 10 11 12 13 (bytes)
+#(1) a (7) e  x  a  m  p  l  e (3) c  o  m
+ 01 61 07 65 78 61 6d 70 6c 65 03 63 6f 6d
diff --git a/src/lib/dns/tests/testdata/name_toWire9 b/src/lib/dns/tests/testdata/name_toWire9
new file mode 100644
index 0000000..51a1987
--- /dev/null
+++ b/src/lib/dns/tests/testdata/name_toWire9
@@ -0,0 +1,13 @@
+#
+# Rendering names including one explicitly uncompressed.
+# [x] means a compression pointer pointing to offset 'x'.
+#
+# 0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 (bytes)
+#(1) a (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 01 61 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+#(1) a (7) e  x  a  m  p  l  e (3) c  o  m
+ 01 61 07 65 78 61 6d 70 6c 65 03 63 6f 6d
+#(1) a (7) e  x  a  m  p  l  e
+ 01 61 07 65 78 61 6d 70 6c 65
+#[1f] pointing to ^^ "example"
+ c0 1f
diff --git a/src/lib/dns/tests/testdata/omitcheck.txt b/src/lib/dns/tests/testdata/omitcheck.txt
new file mode 100644
index 0000000..580cab4
--- /dev/null
+++ b/src/lib/dns/tests/testdata/omitcheck.txt
@@ -0,0 +1 @@
+    1H  IN  A   192.0.2.1
diff --git a/src/lib/dns/tests/testdata/origincheck.txt b/src/lib/dns/tests/testdata/origincheck.txt
new file mode 100644
index 0000000..c370ed2
--- /dev/null
+++ b/src/lib/dns/tests/testdata/origincheck.txt
@@ -0,0 +1,5 @@
+; We change the origin here. We want to check it is not propagated
+; outside of the included file.
+$ORIGIN www.example.org.
+
+@   1H  IN  A   192.0.2.1
diff --git a/src/lib/dns/tests/testdata/question_fromWire b/src/lib/dns/tests/testdata/question_fromWire
new file mode 100644
index 0000000..cbc28c0
--- /dev/null
+++ b/src/lib/dns/tests/testdata/question_fromWire
@@ -0,0 +1,33 @@
+#
+# Wire-format data of a sequence of DNS questions.
+# foo.example.com. IN NS
+# bar.example.com. CH A (owner name is compressed)
+# and some pathological cases
+#
+# 0  1  2  3  4  5  6  7  8  9 10  1  2  3  4  5  6 (-th byte)
+#(3) f  o  o (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 03 66 6f 6f 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+#7  8  9 20
+# type/class: NS = 2, IN = 1
+00 02 00 01
+
+# 1  2  3  4  5  6
+#(3) b  a  r [ptr=0x04]
+ 03 62 61 72 c0 04
+#7  8  9 30
+# type/class: A = 1, CH = 3
+00 01 00 03
+
+# owner name is broken
+#1
+# invalid label type
+ff
+#2  3  4  5
+#type/class IN/A
+00 01 00 01
+
+# short buffer
+# (root name)
+00
+#class is missing
+00 01
diff --git a/src/lib/dns/tests/testdata/question_toWire1 b/src/lib/dns/tests/testdata/question_toWire1
new file mode 100644
index 0000000..77886db
--- /dev/null
+++ b/src/lib/dns/tests/testdata/question_toWire1
@@ -0,0 +1,14 @@
+#
+# Rendering two DNS Questions without name compression
+# foo.example.com. IN NS
+# bar.example.com. CH A
+#
+#(3) f  o  o (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 03 66 6f 6f 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+# type/class: NS = 2, IN = 1
+00 02 00 01
+#(3) b  a  r (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 03 62 61 72 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+#7  8  9 30
+# type/class: A = 1, CH = 3
+00 01 00 03
diff --git a/src/lib/dns/tests/testdata/question_toWire2 b/src/lib/dns/tests/testdata/question_toWire2
new file mode 100644
index 0000000..9117ab2
--- /dev/null
+++ b/src/lib/dns/tests/testdata/question_toWire2
@@ -0,0 +1,14 @@
+#
+# Rendering two DNS Questions with name compression
+# foo.example.com. IN NS
+# bar.example.com. CH A
+#
+# 0  1  2  3  4 ... (-th byte)
+#(3) f  o  o (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 03 66 6f 6f 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+# type/class: NS = 2, IN = 1
+00 02 00 01
+#(3) b  a  r [ptr=0x04]
+ 03 62 61 72 c0 04
+# type/class: A = 1, CH = 3
+00 01 00 03
diff --git a/src/lib/dns/tests/testdata/rdata_afsdb_fromWire1.spec b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire1.spec
new file mode 100644
index 0000000..f831313
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire1.spec
@@ -0,0 +1,3 @@
+[custom]
+sections: afsdb
+[afsdb]
diff --git a/src/lib/dns/tests/testdata/rdata_afsdb_fromWire1.wire b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire1.wire
new file mode 100644
index 0000000..b32776b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire1.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_afsdb_fromWire1.spec
+###
+
+# AFSDB RDATA, RDLEN=21
+0015
+# SUBTYPE=1 SERVER=afsdb.example.com
+0001 056166736462076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_afsdb_fromWire2.spec b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire2.spec
new file mode 100644
index 0000000..f33e768
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire2.spec
@@ -0,0 +1,6 @@
+[custom]
+sections: name:afsdb
+[name]
+name: example.com
+[afsdb]
+server: afsdb.ptr=0
diff --git a/src/lib/dns/tests/testdata/rdata_afsdb_fromWire2.wire b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire2.wire
new file mode 100644
index 0000000..fdc53c5
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire2.wire
@@ -0,0 +1,11 @@
+###
+### This data file was auto-generated from rdata_afsdb_fromWire2.spec
+###
+
+# DNS Name: example.com
+076578616d706c6503636f6d00
+
+# AFSDB RDATA, RDLEN=10
+000a
+# SUBTYPE=1 SERVER=afsdb.ptr=0
+0001 056166736462c000
diff --git a/src/lib/dns/tests/testdata/rdata_afsdb_fromWire3.spec b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire3.spec
new file mode 100644
index 0000000..993032f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire3.spec
@@ -0,0 +1,4 @@
+[custom]
+sections: afsdb
+[afsdb]
+rdlen: 3
diff --git a/src/lib/dns/tests/testdata/rdata_afsdb_fromWire3.wire b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire3.wire
new file mode 100644
index 0000000..7ea4342
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire3.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_afsdb_fromWire3.spec
+###
+
+# AFSDB RDATA, RDLEN=3
+0003
+# SUBTYPE=1 SERVER=afsdb.example.com
+0001 056166736462076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_afsdb_fromWire4.spec b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire4.spec
new file mode 100644
index 0000000..37abf13
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire4.spec
@@ -0,0 +1,4 @@
+[custom]
+sections: afsdb
+[afsdb]
+rdlen: 80
diff --git a/src/lib/dns/tests/testdata/rdata_afsdb_fromWire4.wire b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire4.wire
new file mode 100644
index 0000000..79ff6c2
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire4.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_afsdb_fromWire4.spec
+###
+
+# AFSDB RDATA, RDLEN=80
+0050
+# SUBTYPE=1 SERVER=afsdb.example.com
+0001 056166736462076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_afsdb_fromWire5.spec b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire5.spec
new file mode 100644
index 0000000..0ea79dd
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire5.spec
@@ -0,0 +1,4 @@
+[custom]
+sections: afsdb
+[afsdb]
+server: "01234567890123456789012345678901234567890123456789012345678901234"
diff --git a/src/lib/dns/tests/testdata/rdata_afsdb_fromWire5.wire b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire5.wire
new file mode 100644
index 0000000..13eb016
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_afsdb_fromWire5.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_afsdb_fromWire5.spec
+###
+
+# AFSDB RDATA, RDLEN=71
+0047
+# SUBTYPE=1 SERVER="01234567890123456789012345678901234567890123456789012345678901234"
+0001 432230313233343536373839303132333435363738393031323334353637383930313233343536373839303132333435363738393031323334353637383930313233342200
diff --git a/src/lib/dns/tests/testdata/rdata_afsdb_toWire1.spec b/src/lib/dns/tests/testdata/rdata_afsdb_toWire1.spec
new file mode 100644
index 0000000..1946458
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_afsdb_toWire1.spec
@@ -0,0 +1,4 @@
+[custom]
+sections: afsdb
+[afsdb]
+rdlen: -1
diff --git a/src/lib/dns/tests/testdata/rdata_afsdb_toWire1.wire b/src/lib/dns/tests/testdata/rdata_afsdb_toWire1.wire
new file mode 100644
index 0000000..7746fa6
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_afsdb_toWire1.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_afsdb_toWire1.spec
+###
+
+# AFSDB RDATA
+
+# SUBTYPE=1 SERVER=afsdb.example.com
+0001 056166736462076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_afsdb_toWire2.spec b/src/lib/dns/tests/testdata/rdata_afsdb_toWire2.spec
new file mode 100644
index 0000000..c80011a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_afsdb_toWire2.spec
@@ -0,0 +1,8 @@
+[custom]
+sections: name:afsdb
+[name]
+name: example.com.
+[afsdb]
+subtype: 0
+server: root.example.com
+rdlen: -1
diff --git a/src/lib/dns/tests/testdata/rdata_afsdb_toWire2.wire b/src/lib/dns/tests/testdata/rdata_afsdb_toWire2.wire
new file mode 100644
index 0000000..7f01512
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_afsdb_toWire2.wire
@@ -0,0 +1,11 @@
+###
+### This data file was auto-generated from rdata_afsdb_toWire2.spec
+###
+
+# DNS Name: example.com.
+076578616d706c6503636f6d00
+
+# AFSDB RDATA
+
+# SUBTYPE=0 SERVER=root.example.com
+0000 04726f6f74076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_caa_fromWire1.spec b/src/lib/dns/tests/testdata/rdata_caa_fromWire1.spec
new file mode 100644
index 0000000..d21987c
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_caa_fromWire1.spec
@@ -0,0 +1,6 @@
+#
+# The simplest form of CAA: all default parameters
+#
+[custom]
+sections: caa
+[caa]
diff --git a/src/lib/dns/tests/testdata/rdata_caa_fromWire1.wire b/src/lib/dns/tests/testdata/rdata_caa_fromWire1.wire
new file mode 100644
index 0000000..780bd8d
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_caa_fromWire1.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_caa_fromWire1.spec
+###
+
+# CAA RDATA, RDLEN=21
+0015
+# FLAGS=0 TAG=issue VALUE=ca.example.net
+00 05 697373756563612e6578616d706c652e6e6574
diff --git a/src/lib/dns/tests/testdata/rdata_caa_fromWire2.spec b/src/lib/dns/tests/testdata/rdata_caa_fromWire2.spec
new file mode 100644
index 0000000..867e43d
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_caa_fromWire2.spec
@@ -0,0 +1,7 @@
+#
+# Mixed case CAA tag field.
+#
+[custom]
+sections: caa
+[caa]
+tag: 'ISSue'
diff --git a/src/lib/dns/tests/testdata/rdata_caa_fromWire2.wire b/src/lib/dns/tests/testdata/rdata_caa_fromWire2.wire
new file mode 100644
index 0000000..09ca24d
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_caa_fromWire2.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_caa_fromWire2.spec
+###
+
+# CAA RDATA, RDLEN=21
+0015
+# FLAGS=0 TAG=ISSue VALUE=ca.example.net
+00 05 495353756563612e6578616d706c652e6e6574
diff --git a/src/lib/dns/tests/testdata/rdata_caa_fromWire3.spec b/src/lib/dns/tests/testdata/rdata_caa_fromWire3.spec
new file mode 100644
index 0000000..9297151
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_caa_fromWire3.spec
@@ -0,0 +1,7 @@
+#
+# Missing CAA value field.
+#
+[custom]
+sections: caa
+[caa]
+value: ''
diff --git a/src/lib/dns/tests/testdata/rdata_caa_fromWire3.wire b/src/lib/dns/tests/testdata/rdata_caa_fromWire3.wire
new file mode 100644
index 0000000..16b5c43
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_caa_fromWire3.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_caa_fromWire3.spec
+###
+
+# CAA RDATA, RDLEN=7
+0007
+# FLAGS=0 TAG=issue VALUE=
+00 05 6973737565
diff --git a/src/lib/dns/tests/testdata/rdata_caa_fromWire4.spec b/src/lib/dns/tests/testdata/rdata_caa_fromWire4.spec
new file mode 100644
index 0000000..53e16b1
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_caa_fromWire4.spec
@@ -0,0 +1,7 @@
+#
+# Missing CAA value field.
+#
+[custom]
+sections: caa
+[caa]
+tag: ''
diff --git a/src/lib/dns/tests/testdata/rdata_caa_fromWire4.wire b/src/lib/dns/tests/testdata/rdata_caa_fromWire4.wire
new file mode 100644
index 0000000..3225e60
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_caa_fromWire4.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_caa_fromWire4.spec
+###
+
+# CAA RDATA, RDLEN=16
+0010
+# FLAGS=0 TAG= VALUE=ca.example.net
+00 00 63612e6578616d706c652e6e6574
diff --git a/src/lib/dns/tests/testdata/rdata_caa_fromWire5 b/src/lib/dns/tests/testdata/rdata_caa_fromWire5
new file mode 100644
index 0000000..123011f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_caa_fromWire5
@@ -0,0 +1,6 @@
+# Test where CAA value field is shorter than the RDATA length
+
+# CAA RDATA, RDLEN=32
+0020
+# FLAGS=0 TAG=c VALUE=ca.example.net
+00 01 63 63612e6578616d706c652e6e6574
diff --git a/src/lib/dns/tests/testdata/rdata_caa_fromWire6 b/src/lib/dns/tests/testdata/rdata_caa_fromWire6
new file mode 100644
index 0000000..1a35a1a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_caa_fromWire6
@@ -0,0 +1,4 @@
+# Test where RDATA is completely missing
+
+# CAA RDATA, RDLEN=32
+0020
diff --git a/src/lib/dns/tests/testdata/rdata_cname_fromWire b/src/lib/dns/tests/testdata/rdata_cname_fromWire
new file mode 100644
index 0000000..57eae13
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_cname_fromWire
@@ -0,0 +1,44 @@
+#
+# various kinds of CNAME RDATA stored in an input buffer
+#
+# Valid non-compressed RDATA for cn.example.com.
+# RDLENGTH=16 bytes
+# 0  1
+ 00 10
+# 2  3  4  5  6  7  8  9 10  1  2  3  4  5  6  7(bytes)
+#(2) c  n (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 02 63 6e 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+#
+# short length
+# 8  9
+ 00 0f
+#20  1  2  3  4  5  6  7  8  9 30  1  2  3  4  5
+ 02 63 6e 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+#
+# length too long
+# 6  7
+ 00 11
+#
+# 8  9 40  1  2  3  4  5  6  7  8  9 50  1  2  3  4
+ 02 63 6e 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00 00
+#
+# Valid compressed CNAME name: 'cn2' + pointer
+# 5  6
+ 00 06
+# 7  8  9 60  1  2
+#(3) c  n  2 ptr=5
+ 03 63 6e 32 c0 05
+#
+# Valid compressed CNAME name but RDLENGTH is incorrect: it must be the length
+# of the sequence from the head to the pointer, not the decompressed name
+# length.
+# 3  4
+ 00 11
+# 5  6  7  8  9 70
+ 03 63 6e 32 c0 05
+# incomplete name (no trailing dot).  this can be tested only at the end of
+# the buffer.
+# 1  2
+ 00 0f
+# 3  4  5  6  7  8  9 80  1  2  3  4  5  6  7
+ 02 63 6e 07 65 78 61 6d 70 6c 65 03 63 6f 6d
diff --git a/src/lib/dns/tests/testdata/rdata_dhcid_fromWire b/src/lib/dns/tests/testdata/rdata_dhcid_fromWire
new file mode 100644
index 0000000..b28b5b3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_dhcid_fromWire
@@ -0,0 +1,12 @@
+#
+# DHCID RDATA stored in an input buffer
+#
+# Valid RDATA for 0LIg0LvQtdGB0YMg0YDQvtC00LjQu9Cw0YHRjCDRkdC70L7Rh9C60LA=
+#
+# RDLENGTH=41 bytes
+# 0  1
+ 00 29
+# 0LIg0LvQtdGB0YMg0YDQvtC00LjQu9Cw0YHRjCDRkdC70L7Rh9C60LA=
+d0 b2 20 d0 bb d0 b5 d1 81 d1 83 20 d1 80 d0 be
+d0 b4 d0 b8 d0 bb d0 b0 d1 81 d1 8c 20 d1 91 d0
+bb d0 be d1 87 d0 ba d0 b0
diff --git a/src/lib/dns/tests/testdata/rdata_dhcid_toWire b/src/lib/dns/tests/testdata/rdata_dhcid_toWire
new file mode 100644
index 0000000..99ec229
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_dhcid_toWire
@@ -0,0 +1,7 @@
+#
+# DHCID RDATA stored in an output buffer
+#
+# 0LIg0LvQtdGB0YMg0YDQvtC00LjQu9Cw0YHRjCDRkdC70L7Rh9C60LA=
+d0 b2 20 d0 bb d0 b5 d1 81 d1 83 20 d1 80 d0 be
+d0 b4 d0 b8 d0 bb d0 b0 d1 81 d1 8c 20 d1 91 d0
+bb d0 be d1 87 d0 ba d0 b0
diff --git a/src/lib/dns/tests/testdata/rdata_dname_fromWire b/src/lib/dns/tests/testdata/rdata_dname_fromWire
new file mode 100644
index 0000000..1c899bf
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_dname_fromWire
@@ -0,0 +1,44 @@
+#
+# various kinds of DNAME RDATA stored in an input buffer
+#
+# Valid non-compressed RDATA for dn.example.com.
+# RDLENGTH=16 bytes
+# 0  1
+ 00 10
+# 2  3  4  5  6  7  8  9 10  1  2  3  4  5  6  7(bytes)
+#(2) d  n (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 02 64 6e 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+#
+# short length
+# 8  9
+ 00 0f
+#20  1  2  3  4  5  6  7  8  9 30  1  2  3  4  5
+ 02 64 6e 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+#
+# length too long
+# 6  7
+ 00 11
+#
+# 8  9 40  1  2  3  4  5  6  7  8  9 50  1  2  3  4
+ 02 64 6e 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00 00
+#
+# Valid compressed DNAME name: 'dn2' + pointer
+# 5  6
+ 00 06
+# 7  8  9 60  1  2
+#(3) d  n  2 ptr=5
+ 03 64 6e 32 c0 05
+#
+# Valid compressed DNAME name but RDLENGTH is incorrect: it must be the length
+# of the sequence from the head to the pointer, not the decompressed name
+# length.
+# 3  4
+ 00 11
+# 5  6  7  8  9 70
+ 03 64 6e 32 c0 05
+# incomplete name (no trailing dot).  this can be tested only at the end of
+# the buffer.
+# 1  2
+ 00 0f
+# 3  4  5  6  7  8  9 80  1  2  3  4  5  6  7
+ 02 64 6e 07 65 78 61 6d 70 6c 65 03 63 6f 6d
diff --git a/src/lib/dns/tests/testdata/rdata_dnskey_empty_keydata_fromWire.spec b/src/lib/dns/tests/testdata/rdata_dnskey_empty_keydata_fromWire.spec
new file mode 100644
index 0000000..b65271d
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_dnskey_empty_keydata_fromWire.spec
@@ -0,0 +1,7 @@
+# DNSKEY test data with empty digest
+
+[custom]
+sections: dnskey
+
+[dnskey]
+digest:
diff --git a/src/lib/dns/tests/testdata/rdata_dnskey_empty_keydata_fromWire.wire b/src/lib/dns/tests/testdata/rdata_dnskey_empty_keydata_fromWire.wire
new file mode 100644
index 0000000..35388b1
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_dnskey_empty_keydata_fromWire.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_dnskey_empty_keydata_fromWire.spec
+###
+
+# DNSKEY RDATA, RDLEN=4
+0004
+# FLAGS=257
+0101
+# PROTOCOL=3
+03
+# ALGORITHM=5
+05
+# DIGEST=
+
diff --git a/src/lib/dns/tests/testdata/rdata_dnskey_fromWire.spec b/src/lib/dns/tests/testdata/rdata_dnskey_fromWire.spec
new file mode 100644
index 0000000..87e66db
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_dnskey_fromWire.spec
@@ -0,0 +1,7 @@
+# DNSKEY test data
+
+[custom]
+sections: dnskey
+
+[dnskey]
+digest: BEAAAAOhHQDBrhQbtphgq2wQUpEQ5t4DtUHxoMVFu2hWLDMvoOMRXjGrhhCeFvAZih7yJHf8ZGfW6hd38hXG/xylYCO6Krpbdojwx8YMXLA5/kA+u50WIL8ZR1R6KTbsYVMf/Qx5RiNbPClw+vT+U8eXEJmO20jIS1ULgqy347cBB1zMnnz/4LJpA0da9CbKj3A254T515sNIMcwsB8/2+2E63/zZrQzBkj0BrN/9Bexjpiks3jRhZatEsXn3dTy47R09Uix5WcJt+xzqZ7+ysyLKOOedS39Z7SDmsn2eA0FKtQpwA6LXeG2w+jxmw3oA8lVUgEf/rzeC/bByBNsO70aEFTd
diff --git a/src/lib/dns/tests/testdata/rdata_dnskey_fromWire.wire b/src/lib/dns/tests/testdata/rdata_dnskey_fromWire.wire
new file mode 100644
index 0000000..0a2e41f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_dnskey_fromWire.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_dnskey_fromWire.spec
+###
+
+# DNSKEY RDATA, RDLEN=265
+0109
+# FLAGS=257
+0101
+# PROTOCOL=3
+03
+# ALGORITHM=5
+05
+# DIGEST=BEAAAAOhHQDBrhQbtphgq2wQUpEQ5t4DtUHxoMVFu2hWLDMvoOMRXjGrhhCeFvAZih7yJHf8ZGfW6hd38hXG/xylYCO6Krpbdojwx8YMXLA5/kA+u50WIL8ZR1R6KTbsYVMf/Qx5RiNbPClw+vT+U8eXEJmO20jIS1ULgqy347cBB1zMnnz/4LJpA0da9CbKj3A254T515sNIMcwsB8/2+2E63/zZrQzBkj0BrN/9Bexjpiks3jRhZatEsXn3dTy47R09Uix5WcJt+xzqZ7+ysyLKOOedS39Z7SDmsn2eA0FKtQpwA6LXeG2w+jxmw3oA8lVUgEf/rzeC/bByBNsO70aEFTd
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
diff --git a/src/lib/dns/tests/testdata/rdata_ds_fromWire b/src/lib/dns/tests/testdata/rdata_ds_fromWire
new file mode 100644
index 0000000..81c412c
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_ds_fromWire
@@ -0,0 +1,6 @@
+# RDLENGTH 36 bytes
+00 24
+# DS record, keyid 12892
+32 5c 05 02 f1 e1 84 c0 e1 d6 15 d2 0e b3 c2 23
+ac ed 3b 03 c7 73 dd 95 2d 5f 0e b5 c7 77 58 6d
+e1 8d a6 b5
diff --git a/src/lib/dns/tests/testdata/rdata_in_a_fromWire b/src/lib/dns/tests/testdata/rdata_in_a_fromWire
new file mode 100644
index 0000000..12f508b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_in_a_fromWire
@@ -0,0 +1,19 @@
+#
+# various kinds of IN/A RDATA stored in an input buffer
+#
+# valid RDATA for 192.0.2.1
+#
+# 0  1  2  3  4  5 (bytes)
+ 00 04 c0 00 02 01
+#
+# short length
+# 6  7  8  9 10 11 (bytes)
+ 00 03 c0 00 02 01
+#
+# length too long
+#12 13 14 15 16 17 18
+ 00 05 c0 00 02 01 00
+#
+# short buffer (this can be tested only at the end of the buffer)
+#19 20 21 22 23
+ 00 04 c0 00 02
diff --git a/src/lib/dns/tests/testdata/rdata_in_aaaa_fromWire b/src/lib/dns/tests/testdata/rdata_in_aaaa_fromWire
new file mode 100644
index 0000000..22fdd1f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_in_aaaa_fromWire
@@ -0,0 +1,18 @@
+#
+# various kinds of IN/AAAA RDATA stored in an input buffer
+#
+# valid RDATA for 2001:db8::1234
+#
+#RDLENGTH=16
+0010
+#IPv6 address                          (18 bytes)
+2001 0db8 0000 0000 0000 0000 0000 1234
+#
+# short length                          (36 bytes)
+0008 2001 0db8 0000 0000 0000 0000 0000 1234
+#
+# length too long                            (55 bytes)
+0011 2001 0db8 0000 0000 0000 0000 0000 1234 ff
+#
+# short buffer (this can be tested only at the end of the buffer)
+0010 2001 0db8
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_fromWire1.spec b/src/lib/dns/tests/testdata/rdata_minfo_fromWire1.spec
new file mode 100644
index 0000000..2c43db0
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_fromWire1.spec
@@ -0,0 +1,3 @@
+[custom]
+sections: minfo
+[minfo]
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_fromWire1.wire b/src/lib/dns/tests/testdata/rdata_minfo_fromWire1.wire
new file mode 100644
index 0000000..3483e9b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_fromWire1.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_minfo_fromWire1.spec
+###
+
+# MINFO RDATA, RDLEN=44
+002c
+# RMAILBOX=rmailbox.example.com EMAILBOX=emailbox.example.com
+08726d61696c626f78076578616d706c6503636f6d00 08656d61696c626f78076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_fromWire2.spec b/src/lib/dns/tests/testdata/rdata_minfo_fromWire2.spec
new file mode 100644
index 0000000..d781cac
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_fromWire2.spec
@@ -0,0 +1,7 @@
+[custom]
+sections: name:minfo
+[name]
+name: a.example.com.
+[minfo]
+rmailbox: rmailbox.ptr=02
+emailbox: emailbox.ptr=02
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_fromWire2.wire b/src/lib/dns/tests/testdata/rdata_minfo_fromWire2.wire
new file mode 100644
index 0000000..d79e936
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_fromWire2.wire
@@ -0,0 +1,11 @@
+###
+### This data file was auto-generated from rdata_minfo_fromWire2.spec
+###
+
+# DNS Name: a.example.com.
+0161076578616d706c6503636f6d00
+
+# MINFO RDATA, RDLEN=22
+0016
+# RMAILBOX=rmailbox.ptr=02 EMAILBOX=emailbox.ptr=02
+08726d61696c626f78c002 08656d61696c626f78c002
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_fromWire3.spec b/src/lib/dns/tests/testdata/rdata_minfo_fromWire3.spec
new file mode 100644
index 0000000..a1d4b76
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_fromWire3.spec
@@ -0,0 +1,6 @@
+[custom]
+sections: minfo
+# rdlength too short
+[minfo]
+emailbox: emailbox.ptr=11
+rdlen: 3
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_fromWire3.wire b/src/lib/dns/tests/testdata/rdata_minfo_fromWire3.wire
new file mode 100644
index 0000000..55df1a2
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_fromWire3.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_minfo_fromWire3.spec
+###
+
+# MINFO RDATA, RDLEN=3
+0003
+# RMAILBOX=rmailbox.example.com EMAILBOX=emailbox.ptr=11
+08726d61696c626f78076578616d706c6503636f6d00 08656d61696c626f78c00b
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_fromWire4.spec b/src/lib/dns/tests/testdata/rdata_minfo_fromWire4.spec
new file mode 100644
index 0000000..269a6ce
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_fromWire4.spec
@@ -0,0 +1,6 @@
+[custom]
+sections: minfo
+# rdlength too long
+[minfo]
+emailbox: emailbox.ptr=11
+rdlen: 80
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_fromWire4.wire b/src/lib/dns/tests/testdata/rdata_minfo_fromWire4.wire
new file mode 100644
index 0000000..746f55a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_fromWire4.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_minfo_fromWire4.spec
+###
+
+# MINFO RDATA, RDLEN=80
+0050
+# RMAILBOX=rmailbox.example.com EMAILBOX=emailbox.ptr=11
+08726d61696c626f78076578616d706c6503636f6d00 08656d61696c626f78c00b
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_fromWire5.spec b/src/lib/dns/tests/testdata/rdata_minfo_fromWire5.spec
new file mode 100644
index 0000000..3a888e3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_fromWire5.spec
@@ -0,0 +1,5 @@
+[custom]
+sections: minfo
+# bogus rmailbox name
+[minfo]
+rmailbox: "01234567890123456789012345678901234567890123456789012345678901234"
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_fromWire5.wire b/src/lib/dns/tests/testdata/rdata_minfo_fromWire5.wire
new file mode 100644
index 0000000..dacd9a0
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_fromWire5.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_minfo_fromWire5.spec
+###
+
+# MINFO RDATA, RDLEN=91
+005b
+# RMAILBOX="01234567890123456789012345678901234567890123456789012345678901234" EMAILBOX=emailbox.example.com
+432230313233343536373839303132333435363738393031323334353637383930313233343536373839303132333435363738393031323334353637383930313233342200 08656d61696c626f78076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_fromWire6.spec b/src/lib/dns/tests/testdata/rdata_minfo_fromWire6.spec
new file mode 100644
index 0000000..c75ed8e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_fromWire6.spec
@@ -0,0 +1,5 @@
+[custom]
+sections: minfo
+# bogus emailbox name
+[minfo]
+emailbox: "01234567890123456789012345678901234567890123456789012345678901234"
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_fromWire6.wire b/src/lib/dns/tests/testdata/rdata_minfo_fromWire6.wire
new file mode 100644
index 0000000..4199fee
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_fromWire6.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_minfo_fromWire6.spec
+###
+
+# MINFO RDATA, RDLEN=91
+005b
+# RMAILBOX=rmailbox.example.com EMAILBOX="01234567890123456789012345678901234567890123456789012345678901234"
+08726d61696c626f78076578616d706c6503636f6d00 432230313233343536373839303132333435363738393031323334353637383930313233343536373839303132333435363738393031323334353637383930313233342200
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_toWire1.spec b/src/lib/dns/tests/testdata/rdata_minfo_toWire1.spec
new file mode 100644
index 0000000..7b340a3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_toWire1.spec
@@ -0,0 +1,5 @@
+[custom]
+sections: minfo
+[minfo]
+emailbox: emailbox.ptr=09
+rdlen: -1
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_toWire1.wire b/src/lib/dns/tests/testdata/rdata_minfo_toWire1.wire
new file mode 100644
index 0000000..8ac4afe
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_toWire1.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_minfo_toWire1.spec
+###
+
+# MINFO RDATA
+
+# RMAILBOX=rmailbox.example.com EMAILBOX=emailbox.ptr=09
+08726d61696c626f78076578616d706c6503636f6d00 08656d61696c626f78c009
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_toWire2.spec b/src/lib/dns/tests/testdata/rdata_minfo_toWire2.spec
new file mode 100644
index 0000000..132f118
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_toWire2.spec
@@ -0,0 +1,6 @@
+[custom]
+sections: minfo
+[minfo]
+rmailbox: root.example.com.
+emailbox: emailbox.ptr=05
+rdlen: -1
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_toWire2.wire b/src/lib/dns/tests/testdata/rdata_minfo_toWire2.wire
new file mode 100644
index 0000000..7fb847c
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_toWire2.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_minfo_toWire2.spec
+###
+
+# MINFO RDATA
+
+# RMAILBOX=root.example.com. EMAILBOX=emailbox.ptr=05
+04726f6f74076578616d706c6503636f6d00 08656d61696c626f78c005
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_toWireUncompressed1.spec b/src/lib/dns/tests/testdata/rdata_minfo_toWireUncompressed1.spec
new file mode 100644
index 0000000..d99a381
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_toWireUncompressed1.spec
@@ -0,0 +1,7 @@
+#
+# A simplest form of MINFO: all default parameters
+#
+[custom]
+sections: minfo
+[minfo]
+rdlen: -1
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_toWireUncompressed1.wire b/src/lib/dns/tests/testdata/rdata_minfo_toWireUncompressed1.wire
new file mode 100644
index 0000000..6de233e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_toWireUncompressed1.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_minfo_toWireUncompressed1.spec
+###
+
+# MINFO RDATA
+
+# RMAILBOX=rmailbox.example.com EMAILBOX=emailbox.example.com
+08726d61696c626f78076578616d706c6503636f6d00 08656d61696c626f78076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_toWireUncompressed2.spec b/src/lib/dns/tests/testdata/rdata_minfo_toWireUncompressed2.spec
new file mode 100644
index 0000000..0f78fcc
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_toWireUncompressed2.spec
@@ -0,0 +1,8 @@
+#
+# A simplest form of MINFO: custom rmailbox and default emailbox
+#
+[custom]
+sections: minfo
+[minfo]
+rmailbox: root.example.com.
+rdlen: -1
diff --git a/src/lib/dns/tests/testdata/rdata_minfo_toWireUncompressed2.wire b/src/lib/dns/tests/testdata/rdata_minfo_toWireUncompressed2.wire
new file mode 100644
index 0000000..51e9e35
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_minfo_toWireUncompressed2.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_minfo_toWireUncompressed2.spec
+###
+
+# MINFO RDATA
+
+# RMAILBOX=root.example.com. EMAILBOX=emailbox.example.com
+04726f6f74076578616d706c6503636f6d00 08656d61696c626f78076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_mx_fromWire b/src/lib/dns/tests/testdata/rdata_mx_fromWire
new file mode 100644
index 0000000..8e09154
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_mx_fromWire
@@ -0,0 +1,15 @@
+#
+# various kinds of MX RDATA stored in an input buffer
+#
+# Valid RDATA for "10 mail.example.com"
+#
+# RDLENGTH=18 bytes
+# 0  1
+ 00 12
+#  2  3
+# PREFERENCE: 10
+  00 0a
+# EXCHANGE: non compressed
+# 4  5  6  7  8  9 10  1  2  3  4  5  6  7  8  9 (bytes)
+#(2) m  x (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 02 6d 78 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
diff --git a/src/lib/dns/tests/testdata/rdata_mx_toWire1 b/src/lib/dns/tests/testdata/rdata_mx_toWire1
new file mode 100644
index 0000000..3049373
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_mx_toWire1
@@ -0,0 +1,12 @@
+#
+# compressed MX RDATA stored in an output buffer
+#
+# sentinel name: example.com.
+# 0  1  2  3  4  5  6  7  8  9 10  1  2 (bytes)
+#(7) e  x  a  m  p  l  e (3) c  o  m  .
+ 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+# PREFERENCE: 10
+  00 0a
+# EXCHANGE: compressed
+#(4) m  x ptr=0
+ 02 6d 78 c0 00
diff --git a/src/lib/dns/tests/testdata/rdata_mx_toWire2 b/src/lib/dns/tests/testdata/rdata_mx_toWire2
new file mode 100644
index 0000000..ebd2f27
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_mx_toWire2
@@ -0,0 +1,12 @@
+#
+# compressed MX RDATA stored in an output buffer
+#
+# sentinel name: example.com.
+# 0  1  2  3  4  5  6  7  8  9 10  1  2 (bytes)
+#(7) e  x  a  m  p  l  e (3) c  o  m  .
+ 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+# PREFERENCE: 10
+  00 0a
+# EXCHANGE: not compressed
+#(4) m  x ptr=0
+ 02 6d 78 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
diff --git a/src/lib/dns/tests/testdata/rdata_ns_fromWire b/src/lib/dns/tests/testdata/rdata_ns_fromWire
new file mode 100644
index 0000000..973365f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_ns_fromWire
@@ -0,0 +1,44 @@
+#
+# various kinds of NS RDATA stored in an input buffer
+#
+# Valid non-compressed RDATA for ns.example.com.
+# RDLENGTH=16 bytes
+# 0  1
+ 00 10
+# 2  3  4  5  6  7  8  9 10  1  2  3  4  5  6  7(bytes)
+#(2) n  s (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 02 6e 73 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+#
+# short length
+# 8  9
+ 00 0f
+#20  1  2  3  4  5  6  7  8  9 30  1  2  3  4  5
+ 02 6e 73 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+#
+# length too long
+# 6  7
+ 00 11
+#
+# 8  9 40  1  2  3  4  5  6  7  8  9 50  1  2  3  4
+ 02 6e 73 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00 00
+#
+# Valid compressed NS name: 'ns2' + pointer
+# 5  6
+ 00 06
+# 7  8  9 60  1  2
+#(3) n  s  2 ptr=5
+ 03 6e 73 32 c0 05
+#
+# Valid compressed NS name but RDLENGTH is incorrect: it must be the length
+# of the sequence from the head to the pointer, not the decompressed name
+# length.
+# 3  4
+ 00 11
+# 5  6  7  8  9 70
+ 03 6e 73 32 c0 05
+# incomplete name (no trailing dot).  this can be tested only at the end of
+# the buffer.
+# 1  2
+ 00 0f
+# 3  4  5  6  7  8  9 80  1  2  3  4  5  6  7
+ 02 6e 73 07 65 78 61 6d 70 6c 65 03 63 6f 6d
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire1 b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire1
new file mode 100644
index 0000000..1dd5f52
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire1
@@ -0,0 +1,7 @@
+# RDLENGTH, 39 bytes
+00 27
+# NSEC3 record:
+# 1 1 1 D399EAAB H9RSFB7FPF2L8HG35CMPC765TDK23RP6 NS SOA RRSIG DNSKEY NSEC3PARAM
+01 01 00 01 04 d3 99 ea ab 14 8a 77 c7 ac ef cb
+c5 54 46 03 2b 2d 96 1c c5 eb 68 21 ef 26 00 07
+22 00 00 00 00 02 90
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire1.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire1.spec
new file mode 100644
index 0000000..39a78d7
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire1.spec
@@ -0,0 +1,7 @@
+#
+# A malformed NSEC3 RDATA: bit map length is too large, causing overflow
+#
+
+[custom]
+sections: nsec3
+[nsec3]
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire10.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire10.spec
new file mode 100644
index 0000000..30417f5
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire10.spec
@@ -0,0 +1,8 @@
+#
+# An invalid NSEC3 RDATA: a bitmap block containing empty bytes
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+bitmap: '01000000'
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire10.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire10.wire
new file mode 100644
index 0000000..99c5afd
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire10.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire10.spec
+###
+
+# NSEC3 RDATA, RDLEN=37
+0025
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
+# Hash Len=20, Hash='hhhhhhhhhhhhhhhhhhhh'
+14 6868686868686868686868686868686868686868
+# Bitmap: Block=0, Length=4
+00 04 01000000
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire11.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire11.spec
new file mode 100644
index 0000000..80ec59f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire11.spec
@@ -0,0 +1,8 @@
+#
+# An invalid NSEC3 RDATA: Saltlen is too large
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+rdlen: 7
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire11.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire11.wire
new file mode 100644
index 0000000..48dc589
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire11.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire11.spec
+###
+
+# NSEC3 RDATA, RDLEN=7
+0007
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
+# Hash Len=20, Hash='hhhhhhhhhhhhhhhhhhhh'
+14 6868686868686868686868686868686868686868
+# Bitmap: Block=0, Length=6
+00 06 040000000003
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire12.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire12.spec
new file mode 100644
index 0000000..1e01655
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire12.spec
@@ -0,0 +1,9 @@
+#
+# An invalid NSEC3 RDATA: Hash length is too large
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+# only contains the first byte of hash
+rdlen: 12
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire12.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire12.wire
new file mode 100644
index 0000000..e880d55
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire12.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire12.spec
+###
+
+# NSEC3 RDATA, RDLEN=12
+000c
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
+# Hash Len=20, Hash='hhhhhhhhhhhhhhhhhhhh'
+14 6868686868686868686868686868686868686868
+# Bitmap: Block=0, Length=6
+00 06 040000000003
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire13.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire13.spec
new file mode 100644
index 0000000..fcc9d53
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire13.spec
@@ -0,0 +1,9 @@
+#
+# A valid (but unusual) NSEC3 RDATA: salt is empty.
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+saltlen: 0
+salt: ''
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire13.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire13.wire
new file mode 100644
index 0000000..86a06c5
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire13.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire13.spec
+###
+
+# NSEC3 RDATA, RDLEN=34
+0022
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=0, Salt=''
+00
+# Hash Len=20, Hash='hhhhhhhhhhhhhhhhhhhh'
+14 6868686868686868686868686868686868686868
+# Bitmap: Block=0, Length=6
+00 06 040000000003
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire14.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire14.spec
new file mode 100644
index 0000000..a0550d5
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire14.spec
@@ -0,0 +1,9 @@
+#
+# An invalid NSEC3 RDATA: empty hash
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+hashlen: 0
+hash: ''
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire14.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire14.wire
new file mode 100644
index 0000000..9d76b5a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire14.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire14.spec
+###
+
+# NSEC3 RDATA, RDLEN=19
+0013
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
+# Hash Len=0, Hash=''
+00
+# Bitmap: Block=0, Length=6
+00 06 040000000003
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire15.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire15.spec
new file mode 100644
index 0000000..4993e03
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire15.spec
@@ -0,0 +1,10 @@
+#
+# NSEC3 RDATA with empty type bitmap.  It's okay.
+# The test data includes bytes for a bitmap field, but RDLEN indicates
+# it's not part of the RDATA and so it will be ignored.
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+rdlen: 31
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire15.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire15.wire
new file mode 100644
index 0000000..bd636a7
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire15.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire15.spec
+###
+
+# NSEC3 RDATA, RDLEN=31
+001f
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
+# Hash Len=20, Hash='hhhhhhhhhhhhhhhhhhhh'
+14 6868686868686868686868686868686868686868
+# Bitmap: Block=0, Length=6
+00 06 040000000003
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire16.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire16.spec
new file mode 100644
index 0000000..dac14ea
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire16.spec
@@ -0,0 +1,8 @@
+#
+# NSEC3 RDATA with an empty bitmap
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+nbitmap: 0
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire16.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire16.wire
new file mode 100644
index 0000000..bab957e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire16.wire
@@ -0,0 +1,12 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire16.spec
+###
+
+# NSEC3 RDATA, RDLEN=31
+001f
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
+# Hash Len=20, Hash='hhhhhhhhhhhhhhhhhhhh'
+14 6868686868686868686868686868686868686868
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire17.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire17.spec
new file mode 100644
index 0000000..4253349
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire17.spec
@@ -0,0 +1,8 @@
+#
+# An invalid NSEC3 RDATA: RDLEN is too short to include the hash len field.
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+rdlen: 10
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire17.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire17.wire
new file mode 100644
index 0000000..f7972a0
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire17.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire17.spec
+###
+
+# NSEC3 RDATA, RDLEN=10
+000a
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
+# Hash Len=20, Hash='hhhhhhhhhhhhhhhhhhhh'
+14 6868686868686868686868686868686868686868
+# Bitmap: Block=0, Length=6
+00 06 040000000003
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire2.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire2.spec
new file mode 100644
index 0000000..f35de83
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire2.spec
@@ -0,0 +1,9 @@
+#
+# A malformed NSEC3 RDATA: RDLEN indicates it doesn't even contain the fixed
+# 5 octets
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+rdlen: 4
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire2.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire2.wire
new file mode 100644
index 0000000..ec14a58
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire2.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire2.spec
+###
+
+# NSEC3 RDATA, RDLEN=4
+0004
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
+# Hash Len=20, Hash='hhhhhhhhhhhhhhhhhhhh'
+14 6868686868686868686868686868686868686868
+# Bitmap: Block=0, Length=6
+00 06 040000000003
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire3 b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire3
new file mode 100644
index 0000000..a0c8f59
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire3
@@ -0,0 +1,6 @@
+# RDLENGTH, 39 bytes
+00 27
+# NSEC3 record with a broken type bitmap
+01 01 00 01 04 d3 99 ea ab 14 8a 77 c7 ac ef cb
+c5 54 46 03 2b 2d 96 1c c5 eb 68 21 ef 26 00 ff
+22 00 00 00 00 02 90
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire4.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire4.spec
new file mode 100644
index 0000000..06d6eb4
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire4.spec
@@ -0,0 +1,9 @@
+#
+# A malformed NSEC3 RDATA: bit map length is too large, causing overflow
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+maplen: 31
+bitmap: '01'
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire4.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire4.wire
new file mode 100644
index 0000000..527860c
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire4.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire4.spec
+###
+
+# NSEC3 RDATA, RDLEN=34
+0022
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
+# Hash Len=20, Hash='hhhhhhhhhhhhhhhhhhhh'
+14 6868686868686868686868686868686868686868
+# Bitmap: Block=0, Length=31
+00 1f 01
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire5.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire5.spec
new file mode 100644
index 0000000..2d5713c
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire5.spec
@@ -0,0 +1,13 @@
+#
+# A malformed NSEC3 RDATA: incomplete bit map field
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+# only containing the block field of the bitmap
+rdlen: 32
+#dummy data
+maplen: 31
+#dummy data
+bitmap: '00'
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire5.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire5.wire
new file mode 100644
index 0000000..97b798b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire5.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire5.spec
+###
+
+# NSEC3 RDATA, RDLEN=32
+0020
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
+# Hash Len=20, Hash='hhhhhhhhhhhhhhhhhhhh'
+14 6868686868686868686868686868686868686868
+# Bitmap: Block=0, Length=31
+00 1f 00
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire6.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire6.spec
new file mode 100644
index 0000000..36e9e59
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire6.spec
@@ -0,0 +1,11 @@
+#
+# A malformed NSEC3 RDATA: bit map length being 0
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+rdlen: 33
+maplen: 0
+# dummy data:
+bitmap: '01'
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire6.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire6.wire
new file mode 100644
index 0000000..4cf1189
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire6.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire6.spec
+###
+
+# NSEC3 RDATA, RDLEN=33
+0021
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
+# Hash Len=20, Hash='hhhhhhhhhhhhhhhhhhhh'
+14 6868686868686868686868686868686868686868
+# Bitmap: Block=0, Length=0
+00 00 01
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire7.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire7.spec
new file mode 100644
index 0000000..338c0c9
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire7.spec
@@ -0,0 +1,9 @@
+#
+# NSEC3 RDATA with a longest bitmap field (32 bitmap bytes)
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+maplen: 32
+bitmap: '0101010101010101010101010101010101010101010101010101010101010101'
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire7.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire7.wire
new file mode 100644
index 0000000..1fddd58
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire7.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire7.spec
+###
+
+# NSEC3 RDATA, RDLEN=65
+0041
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
+# Hash Len=20, Hash='hhhhhhhhhhhhhhhhhhhh'
+14 6868686868686868686868686868686868686868
+# Bitmap: Block=0, Length=32
+00 20 0101010101010101010101010101010101010101010101010101010101010101
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire8.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire8.spec
new file mode 100644
index 0000000..041714e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire8.spec
@@ -0,0 +1,9 @@
+#
+# An invalid NSEC3 RDATA with an oversized bitmap field (33 bitmap bytes)
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+maplen: 33
+bitmap: '010101010101010101010101010101010101010101010101010101010101010101'
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire8.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire8.wire
new file mode 100644
index 0000000..9569094
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire8.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire8.spec
+###
+
+# NSEC3 RDATA, RDLEN=66
+0042
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
+# Hash Len=20, Hash='hhhhhhhhhhhhhhhhhhhh'
+14 6868686868686868686868686868686868686868
+# Bitmap: Block=0, Length=33
+00 21 010101010101010101010101010101010101010101010101010101010101010101
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire9.spec b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire9.spec
new file mode 100644
index 0000000..b04c84f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire9.spec
@@ -0,0 +1,10 @@
+#
+# An invalid NSEC3 RDATA: disordered bitmap blocks
+#
+
+[custom]
+sections: nsec3
+[nsec3]
+nbitmap: 2
+block0: 2
+block1: 1
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3_fromWire9.wire b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire9.wire
new file mode 100644
index 0000000..9c0de10
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3_fromWire9.wire
@@ -0,0 +1,16 @@
+###
+### This data file was auto-generated from rdata_nsec3_fromWire9.spec
+###
+
+# NSEC3 RDATA, RDLEN=47
+002f
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
+# Hash Len=20, Hash='hhhhhhhhhhhhhhhhhhhh'
+14 6868686868686868686868686868686868686868
+# Bitmap: Block=2, Length=6
+02 06 040000000003
+# Bitmap: Block=1, Length=6
+01 06 040000000003
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire1 b/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire1
new file mode 100644
index 0000000..1b8697f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire1
@@ -0,0 +1,5 @@
+# RDLENGTH, 9 bytes
+00 09
+# NSEC3PARAM record
+# 1 1 1 D399EAAB
+01 01 00 01 04 d3 99 ea ab
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire11.spec b/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire11.spec
new file mode 100644
index 0000000..41e1784
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire11.spec
@@ -0,0 +1,8 @@
+#
+# An invalid NSEC3PARAM RDATA: Saltlen is too large
+#
+
+[custom]
+sections: nsec3param
+[nsec3param]
+rdlen: 7
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire11.wire b/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire11.wire
new file mode 100644
index 0000000..e9ffb46
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire11.wire
@@ -0,0 +1,10 @@
+###
+### This data file was auto-generated from rdata_nsec3param_fromWire11.spec
+###
+
+# NSEC3PARAM RDATA, RDLEN=7
+0007
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire13.spec b/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire13.spec
new file mode 100644
index 0000000..311b2dd
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire13.spec
@@ -0,0 +1,9 @@
+#
+# A valid (but unusual) NSEC3PARAM RDATA: salt is empty.
+#
+
+[custom]
+sections: nsec3param
+[nsec3param]
+saltlen: 0
+salt: ''
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire13.wire b/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire13.wire
new file mode 100644
index 0000000..511da87
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire13.wire
@@ -0,0 +1,10 @@
+###
+### This data file was auto-generated from rdata_nsec3param_fromWire13.spec
+###
+
+# NSEC3PARAM RDATA, RDLEN=5
+0005
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=0, Salt=''
+00
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire2.spec b/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire2.spec
new file mode 100644
index 0000000..e04b818
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire2.spec
@@ -0,0 +1,9 @@
+#
+# A malformed NSEC3PARAM RDATA: RDLEN indicates it doesn't even contain the
+# fixed 5 octets
+#
+
+[custom]
+sections: nsec3param
+[nsec3param]
+rdlen: 4
diff --git a/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire2.wire b/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire2.wire
new file mode 100644
index 0000000..adc5ea9
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec3param_fromWire2.wire
@@ -0,0 +1,10 @@
+###
+### This data file was auto-generated from rdata_nsec3param_fromWire2.spec
+###
+
+# NSEC3PARAM RDATA, RDLEN=4
+0004
+# Hash Alg=SHA1(1), Opt-Out=0, Other Flags=0, Iterations=1
+01 00 0001
+# Salt Len=5, Salt='sssss'
+05 7373737373
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire1 b/src/lib/dns/tests/testdata/rdata_nsec_fromWire1
new file mode 100644
index 0000000..9c34394
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire1
@@ -0,0 +1,6 @@
+# RDLENGTH, 22 bytes
+00 16
+# NSEC record
+# www2.isc.org. CNAME RRSIG NSEC
+04 77 77 77 32 03 69 73 63 03 6f 72 67 00 00 06
+04 00 00 00 00 03
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire10.spec b/src/lib/dns/tests/testdata/rdata_nsec_fromWire10.spec
new file mode 100644
index 0000000..39d19ae
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire10.spec
@@ -0,0 +1,8 @@
+#
+# An invalid NSEC RDATA: a bitmap block containing empty bytes
+#
+
+[custom]
+sections: nsec
+[nsec]
+bitmap: '01000000'
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire10.wire b/src/lib/dns/tests/testdata/rdata_nsec_fromWire10.wire
new file mode 100644
index 0000000..1145dbd
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire10.wire
@@ -0,0 +1,10 @@
+###
+### This data file was auto-generated from rdata_nsec_fromWire10.spec
+###
+
+# NSEC RDATA, RDLEN=24
+0018
+# Next Name=next.example.com (18 bytes)
+046e657874076578616d706c6503636f6d00
+# Bitmap: Block=0, Length=4
+00 04 01000000
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire16.spec b/src/lib/dns/tests/testdata/rdata_nsec_fromWire16.spec
new file mode 100644
index 0000000..d7faeed
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire16.spec
@@ -0,0 +1,8 @@
+#
+# An invalid NSEC RDATA: with an empty bitmap
+#
+
+[custom]
+sections: nsec
+[nsec]
+nbitmap: 0
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire16.wire b/src/lib/dns/tests/testdata/rdata_nsec_fromWire16.wire
new file mode 100644
index 0000000..943601a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire16.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_nsec_fromWire16.spec
+###
+
+# NSEC RDATA, RDLEN=18
+0012
+# Next Name=next.example.com (18 bytes)
+046e657874076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire2 b/src/lib/dns/tests/testdata/rdata_nsec_fromWire2
new file mode 100644
index 0000000..e9b41e2
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire2
@@ -0,0 +1,10 @@
+#
+# NSEC RDATA with a bogus RDLEN (too short)
+#
+
+# RDLENGTH, 13 bytes (should be 22)
+00 0d
+# NSEC record
+# www2.isc.org. CNAME RRSIG NSEC
+04 77 77 77 32 03 69 73 63 03 6f 72 67 00 00 06
+04 00 00 00 00 03
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire3 b/src/lib/dns/tests/testdata/rdata_nsec_fromWire3
new file mode 100644
index 0000000..67e6b3f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire3
@@ -0,0 +1,10 @@
+#
+# NSEC RDATA with an invalid type bitmap
+#
+
+# RDLENGTH, 22 bytes
+00 16
+# NSEC record
+# www2.isc.org. followed by a broken bitmap
+04 77 77 77 32 03 69 73 63 03 6f 72 67 00 00 ff
+00 00 00 00 00 00
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire4.spec b/src/lib/dns/tests/testdata/rdata_nsec_fromWire4.spec
new file mode 100644
index 0000000..a5744c1
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire4.spec
@@ -0,0 +1,9 @@
+#
+# A malformed NSEC RDATA: bit map length is too large, causing overflow
+#
+
+[custom]
+sections: nsec
+[nsec]
+maplen: 31
+bitmap: '01' 
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire4.wire b/src/lib/dns/tests/testdata/rdata_nsec_fromWire4.wire
new file mode 100644
index 0000000..1c4d4a4
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire4.wire
@@ -0,0 +1,10 @@
+###
+### This data file was auto-generated from rdata_nsec_fromWire4.spec
+###
+
+# NSEC RDATA, RDLEN=21
+0015
+# Next Name=next.example.com (18 bytes)
+046e657874076578616d706c6503636f6d00
+# Bitmap: Block=0, Length=31
+00 1f 01
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire5.spec b/src/lib/dns/tests/testdata/rdata_nsec_fromWire5.spec
new file mode 100644
index 0000000..795d1e0
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire5.spec
@@ -0,0 +1,13 @@
+#
+# A malformed NSEC RDATA: incomplete bit map field
+#
+
+[custom]
+sections: nsec
+[nsec]
+# only containing the block field of the bitmap
+rdlen: 19
+#dummy data
+maplen: 31
+#dummy data
+bitmap: '00'
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire5.wire b/src/lib/dns/tests/testdata/rdata_nsec_fromWire5.wire
new file mode 100644
index 0000000..104a2b9
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire5.wire
@@ -0,0 +1,10 @@
+###
+### This data file was auto-generated from rdata_nsec_fromWire5.spec
+###
+
+# NSEC RDATA, RDLEN=19
+0013
+# Next Name=next.example.com (18 bytes)
+046e657874076578616d706c6503636f6d00
+# Bitmap: Block=0, Length=31
+00 1f 00
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire6.spec b/src/lib/dns/tests/testdata/rdata_nsec_fromWire6.spec
new file mode 100644
index 0000000..cb864ab
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire6.spec
@@ -0,0 +1,11 @@
+#
+# A malformed NSEC RDATA: bit map length being 0
+#
+
+[custom]
+sections: nsec
+[nsec]
+rdlen: 20
+maplen: 0
+# dummy data:
+bitmap: '01' 
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire6.wire b/src/lib/dns/tests/testdata/rdata_nsec_fromWire6.wire
new file mode 100644
index 0000000..3108ed7
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire6.wire
@@ -0,0 +1,10 @@
+###
+### This data file was auto-generated from rdata_nsec_fromWire6.spec
+###
+
+# NSEC RDATA, RDLEN=20
+0014
+# Next Name=next.example.com (18 bytes)
+046e657874076578616d706c6503636f6d00
+# Bitmap: Block=0, Length=0
+00 00 01
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire7.spec b/src/lib/dns/tests/testdata/rdata_nsec_fromWire7.spec
new file mode 100644
index 0000000..46b521b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire7.spec
@@ -0,0 +1,9 @@
+#
+# NSEC RDATA with a longest bitmap field (32 bitmap bytes)
+#
+
+[custom]
+sections: nsec
+[nsec]
+maplen: 32
+bitmap: '0101010101010101010101010101010101010101010101010101010101010101'
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire7.wire b/src/lib/dns/tests/testdata/rdata_nsec_fromWire7.wire
new file mode 100644
index 0000000..e265a3b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire7.wire
@@ -0,0 +1,10 @@
+###
+### This data file was auto-generated from rdata_nsec_fromWire7.spec
+###
+
+# NSEC RDATA, RDLEN=52
+0034
+# Next Name=next.example.com (18 bytes)
+046e657874076578616d706c6503636f6d00
+# Bitmap: Block=0, Length=32
+00 20 0101010101010101010101010101010101010101010101010101010101010101
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire8.spec b/src/lib/dns/tests/testdata/rdata_nsec_fromWire8.spec
new file mode 100644
index 0000000..3f957a3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire8.spec
@@ -0,0 +1,9 @@
+#
+# An invalid NSEC RDATA with an oversized bitmap field (33 bitmap bytes)
+#
+
+[custom]
+sections: nsec
+[nsec]
+maplen: 33
+bitmap: '010101010101010101010101010101010101010101010101010101010101010101'
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire8.wire b/src/lib/dns/tests/testdata/rdata_nsec_fromWire8.wire
new file mode 100644
index 0000000..066cd70
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire8.wire
@@ -0,0 +1,10 @@
+###
+### This data file was auto-generated from rdata_nsec_fromWire8.spec
+###
+
+# NSEC RDATA, RDLEN=53
+0035
+# Next Name=next.example.com (18 bytes)
+046e657874076578616d706c6503636f6d00
+# Bitmap: Block=0, Length=33
+00 21 010101010101010101010101010101010101010101010101010101010101010101
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire9.spec b/src/lib/dns/tests/testdata/rdata_nsec_fromWire9.spec
new file mode 100644
index 0000000..a3bd0c9
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire9.spec
@@ -0,0 +1,10 @@
+#
+# An invalid NSEC RDATA: disordered bitmap blocks
+#
+
+[custom]
+sections: nsec
+[nsec]
+nbitmap: 2
+block0: 2
+block1: 1
diff --git a/src/lib/dns/tests/testdata/rdata_nsec_fromWire9.wire b/src/lib/dns/tests/testdata/rdata_nsec_fromWire9.wire
new file mode 100644
index 0000000..53ad6cc
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_nsec_fromWire9.wire
@@ -0,0 +1,12 @@
+###
+### This data file was auto-generated from rdata_nsec_fromWire9.spec
+###
+
+# NSEC RDATA, RDLEN=34
+0022
+# Next Name=next.example.com (18 bytes)
+046e657874076578616d706c6503636f6d00
+# Bitmap: Block=2, Length=6
+02 06 040000000003
+# Bitmap: Block=1, Length=6
+01 06 040000000003
diff --git a/src/lib/dns/tests/testdata/rdata_opt_fromWire1 b/src/lib/dns/tests/testdata/rdata_opt_fromWire1
new file mode 100644
index 0000000..f2eb680
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_opt_fromWire1
@@ -0,0 +1,15 @@
+# Various kinds of OPT RDATA stored in an input buffer
+#
+# Empty RDATA (which is okay)
+#
+# 0  1 (bytes)
+ 00 00
+#
+# An OPT RR containing an NSID Option
+#      code=3 len=3 ID value (opaque)
+# 2  3  4  5  6  7  8  9 10
+ 00 07 00 2a 00 03 00 01 02
+#
+# Short buffer (this can be tested only at the end of the buffer)
+# 1  2  3  4  5
+ 00 04 c0 00 02
diff --git a/src/lib/dns/tests/testdata/rdata_opt_fromWire2 b/src/lib/dns/tests/testdata/rdata_opt_fromWire2
new file mode 100644
index 0000000..2c5a11f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_opt_fromWire2
@@ -0,0 +1,4 @@
+# Short RDATA length
+#
+# OPT RDATA, RDLEN=1
+0001
diff --git a/src/lib/dns/tests/testdata/rdata_opt_fromWire3 b/src/lib/dns/tests/testdata/rdata_opt_fromWire3
new file mode 100644
index 0000000..52db1d8
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_opt_fromWire3
@@ -0,0 +1,8 @@
+# Short RDATA length (in second pseudo RR)
+#
+# OPT RDATA, RDLEN=8
+0008
+# Pseudo RR 1 of size 7 (code=3, len=3)
+00 03 00 03 00 01 02
+# Pseudo RR 2 of size 7 exhausts RDLEN (code=4, len=3)
+00 04 00 03 00 01 02
diff --git a/src/lib/dns/tests/testdata/rdata_opt_fromWire4 b/src/lib/dns/tests/testdata/rdata_opt_fromWire4
new file mode 100644
index 0000000..a302127
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_opt_fromWire4
@@ -0,0 +1,9 @@
+# Sum of option lengths would overflow RDLEN
+#
+# OPT RDATA, RDLEN=14 (0x000e)
+000e
+# Pseudo RR 1 (code=3, len=3)
+00 03 00 03 00 01 02
+# Pseudo RR 2 (code=4, len=65535 overflows RDLEN)
+00 04 ff ff 00 01 02
+# Rest of option data is omitted...
diff --git a/src/lib/dns/tests/testdata/rdata_rp_fromWire1.spec b/src/lib/dns/tests/testdata/rdata_rp_fromWire1.spec
new file mode 100644
index 0000000..edb9f34
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_fromWire1.spec
@@ -0,0 +1,6 @@
+#
+# A simplest form of RP: all default parameters
+#
+[custom]
+sections: rp
+[rp]
diff --git a/src/lib/dns/tests/testdata/rdata_rp_fromWire1.wire b/src/lib/dns/tests/testdata/rdata_rp_fromWire1.wire
new file mode 100644
index 0000000..aa93986
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_fromWire1.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_rp_fromWire1.spec
+###
+
+# RP RDATA, RDLEN=39
+0027
+# MAILBOX=root.example.com TEXT=rp-text.example.com
+04726f6f74076578616d706c6503636f6d00 0772702d74657874076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_rp_fromWire2.spec b/src/lib/dns/tests/testdata/rdata_rp_fromWire2.spec
new file mode 100644
index 0000000..57adb5a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_fromWire2.spec
@@ -0,0 +1,12 @@
+#
+# A simplest form of RP: names are compressed.
+#
+[custom]
+sections: name/1:name/2:rp
+[name/1]
+name: a.example.com
+[name/2]
+name: b.example.net
+[rp]
+mailbox: root.ptr=2
+text: rp-text.ptr=17
diff --git a/src/lib/dns/tests/testdata/rdata_rp_fromWire2.wire b/src/lib/dns/tests/testdata/rdata_rp_fromWire2.wire
new file mode 100644
index 0000000..507bb1a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_fromWire2.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_rp_fromWire2.spec
+###
+
+# DNS Name: a.example.com
+0161076578616d706c6503636f6d00
+
+# DNS Name: b.example.net
+0162076578616d706c65036e657400
+
+# RP RDATA, RDLEN=17
+0011
+# MAILBOX=root.ptr=2 TEXT=rp-text.ptr=17
+04726f6f74c002 0772702d74657874c011
diff --git a/src/lib/dns/tests/testdata/rdata_rp_fromWire3.spec b/src/lib/dns/tests/testdata/rdata_rp_fromWire3.spec
new file mode 100644
index 0000000..a238b7e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_fromWire3.spec
@@ -0,0 +1,7 @@
+#
+# RP-like RDATA but RDLEN is too short.
+#
+[custom]
+sections: rp
+[rp]
+rdlen: 38
diff --git a/src/lib/dns/tests/testdata/rdata_rp_fromWire3.wire b/src/lib/dns/tests/testdata/rdata_rp_fromWire3.wire
new file mode 100644
index 0000000..c2a7086
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_fromWire3.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_rp_fromWire3.spec
+###
+
+# RP RDATA, RDLEN=38
+0026
+# MAILBOX=root.example.com TEXT=rp-text.example.com
+04726f6f74076578616d706c6503636f6d00 0772702d74657874076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_rp_fromWire4.spec b/src/lib/dns/tests/testdata/rdata_rp_fromWire4.spec
new file mode 100644
index 0000000..6f3abd1
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_fromWire4.spec
@@ -0,0 +1,7 @@
+#
+# RP-like RDATA but RDLEN is too long.
+#
+[custom]
+sections: rp
+[rp]
+rdlen: 40
diff --git a/src/lib/dns/tests/testdata/rdata_rp_fromWire4.wire b/src/lib/dns/tests/testdata/rdata_rp_fromWire4.wire
new file mode 100644
index 0000000..56c643e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_fromWire4.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_rp_fromWire4.spec
+###
+
+# RP RDATA, RDLEN=40
+0028
+# MAILBOX=root.example.com TEXT=rp-text.example.com
+04726f6f74076578616d706c6503636f6d00 0772702d74657874076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_rp_fromWire5.spec b/src/lib/dns/tests/testdata/rdata_rp_fromWire5.spec
new file mode 100644
index 0000000..b8d5e29
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_fromWire5.spec
@@ -0,0 +1,7 @@
+#
+# RP-like RDATA but mailbox name is broken.
+#
+[custom]
+sections: rp
+[rp]
+mailbox: "01234567890123456789012345678901234567890123456789012345678901234"
diff --git a/src/lib/dns/tests/testdata/rdata_rp_fromWire5.wire b/src/lib/dns/tests/testdata/rdata_rp_fromWire5.wire
new file mode 100644
index 0000000..1127047
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_fromWire5.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_rp_fromWire5.spec
+###
+
+# RP RDATA, RDLEN=90
+005a
+# MAILBOX="01234567890123456789012345678901234567890123456789012345678901234" TEXT=rp-text.example.com
+432230313233343536373839303132333435363738393031323334353637383930313233343536373839303132333435363738393031323334353637383930313233342200 0772702d74657874076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_rp_fromWire6.spec b/src/lib/dns/tests/testdata/rdata_rp_fromWire6.spec
new file mode 100644
index 0000000..e9e79f3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_fromWire6.spec
@@ -0,0 +1,7 @@
+#
+# RP-like RDATA but text name is broken.
+#
+[custom]
+sections: rp
+[rp]
+text: "01234567890123456789012345678901234567890123456789012345678901234"
diff --git a/src/lib/dns/tests/testdata/rdata_rp_fromWire6.wire b/src/lib/dns/tests/testdata/rdata_rp_fromWire6.wire
new file mode 100644
index 0000000..49aedc6
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_fromWire6.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_rp_fromWire6.spec
+###
+
+# RP RDATA, RDLEN=87
+0057
+# MAILBOX=root.example.com TEXT="01234567890123456789012345678901234567890123456789012345678901234"
+04726f6f74076578616d706c6503636f6d00 432230313233343536373839303132333435363738393031323334353637383930313233343536373839303132333435363738393031323334353637383930313233342200
diff --git a/src/lib/dns/tests/testdata/rdata_rp_toWire1.spec b/src/lib/dns/tests/testdata/rdata_rp_toWire1.spec
new file mode 100644
index 0000000..948bd1a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_toWire1.spec
@@ -0,0 +1,8 @@
+#
+# A simplest form of RP for toWire test: all default parameters except rdlen,
+# which is to be omitted.
+#
+[custom]
+sections: rp
+[rp]
+rdlen: -1
diff --git a/src/lib/dns/tests/testdata/rdata_rp_toWire1.wire b/src/lib/dns/tests/testdata/rdata_rp_toWire1.wire
new file mode 100644
index 0000000..dcadb15
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_toWire1.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_rp_toWire1.spec
+###
+
+# RP RDATA
+
+# MAILBOX=root.example.com TEXT=rp-text.example.com
+04726f6f74076578616d706c6503636f6d00 0772702d74657874076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdata_rp_toWire2.spec b/src/lib/dns/tests/testdata/rdata_rp_toWire2.spec
new file mode 100644
index 0000000..09a7ddc
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_toWire2.spec
@@ -0,0 +1,14 @@
+#
+# A simple form of RP: names could be compressed (but MUST NOT).
+# rdlen is omitted for the "to wire" test.
+#
+[custom]
+sections: name/1:name/2:rp
+[name/1]
+name: a.example.com
+[name/2]
+name: b.example.net
+[rp]
+rdlen: -1
+mailbox: root.example.com
+text: rp-text.example.net
diff --git a/src/lib/dns/tests/testdata/rdata_rp_toWire2.wire b/src/lib/dns/tests/testdata/rdata_rp_toWire2.wire
new file mode 100644
index 0000000..38057ef
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rp_toWire2.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_rp_toWire2.spec
+###
+
+# DNS Name: a.example.com
+0161076578616d706c6503636f6d00
+
+# DNS Name: b.example.net
+0162076578616d706c65036e657400
+
+# RP RDATA
+
+# MAILBOX=root.example.com TEXT=rp-text.example.net
+04726f6f74076578616d706c6503636f6d00 0772702d74657874076578616d706c65036e657400
diff --git a/src/lib/dns/tests/testdata/rdata_rrsig_fromWire1 b/src/lib/dns/tests/testdata/rdata_rrsig_fromWire1
new file mode 100644
index 0000000..1b799c2
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rrsig_fromWire1
@@ -0,0 +1,13 @@
+# RDLENGTH 155 bytes
+00 9b
+# RRSIG record
+00 01 05 02 00 00 a8 c0 4b ad ad 5d 4b 86 20 5d
+0a 62 03 69 73 63 03 6f 72 67 00 1e 42 64 ff 16
+53 bf 37 8f 53 c3 44 36 5f e5 7b 2f 1b 6d 4b a6
+86 4d 61 5d c8 b2 aa 12 e7 cf 55 50 17 39 03 a2
+87 a3 ea 77 97 66 05 99 cd 02 9e 4c a3 ce 61 6a
+e7 62 d7 59 5b 83 e7 3d 01 5e 52 5d e8 ae 02 de
+bf b1 7c 27 a1 59 94 39 f4 cb f2 7f 4e 14 79 9b
+7e 8c a3 6f c6 77 18 e3 f2 52 7f 22 33 d5 91 da
+4a c8 1a 5c 9d 83 43 f0 a1 08 99 ae 4c c8 d0 8d
+7b 23 b5 52 47 cf 41 91 87 35 24
diff --git a/src/lib/dns/tests/testdata/rdata_rrsig_fromWire2.spec b/src/lib/dns/tests/testdata/rdata_rrsig_fromWire2.spec
new file mode 100644
index 0000000..582975a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rrsig_fromWire2.spec
@@ -0,0 +1,8 @@
+#
+# RRSIG RDATA with a bogus RDLEN (too short)
+#
+
+[custom]
+sections: rrsig
+[rrsig]
+rdlen: 19
diff --git a/src/lib/dns/tests/testdata/rdata_rrsig_fromWire2.wire b/src/lib/dns/tests/testdata/rdata_rrsig_fromWire2.wire
new file mode 100644
index 0000000..b3601a1
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_rrsig_fromWire2.wire
@@ -0,0 +1,12 @@
+###
+### This data file was auto-generated from rdata_rrsig_fromWire2.spec
+###
+
+# RRSIG RDATA, RDLEN=19
+0013
+# Covered=A(1) Algorithm=RSASHA1(5) Labels=2 OrigTTL=3600
+0001 05 02 00000e10
+# Expiration=1264935600, Inception=1262343600
+4b6562b0 4b3dd5b0
+# Tag=4149 Signer=example.com and Signature
+1035 076578616d706c6503636f6d00 123456789abcdef123456789abcdef
diff --git a/src/lib/dns/tests/testdata/rdata_soa_fromWire b/src/lib/dns/tests/testdata/rdata_soa_fromWire
new file mode 100644
index 0000000..5cd67f0
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_soa_fromWire
@@ -0,0 +1,20 @@
+#
+# A common style of SOA RDATA stored in an input buffer
+#
+# Valid compressed RDATA for "(ns.example.com. root.example.com.
+# 2010012601 3600 300 3600000 1200)"
+# RDLENGTH=43 bytes
+# 0  1
+ 00 2b
+# MNAME: non compressed
+# 2  3  4  5  6  7  8  9 10  1  2  3  4  5  6  7(bytes)
+#(2) n  s (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 02 6e 73 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+# RNAME: compressed
+# 8  9  20  1  2  3  4
+#(4)  r  o  o  t ptr=5
+  04 72 6f 6f 74 c0 05
+# other numeric parameters
+#      28      32        36        40       44
+# serial, refresh,    retry,  expire,  minimum
+ 77ce5bb9 00000e10 0000012c  0036ee80 000004b0
diff --git a/src/lib/dns/tests/testdata/rdata_soa_toWireUncompressed.spec b/src/lib/dns/tests/testdata/rdata_soa_toWireUncompressed.spec
new file mode 100644
index 0000000..389cec9
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_soa_toWireUncompressed.spec
@@ -0,0 +1,7 @@
+#
+# A simple SOA RDATA without name compression
+#
+
+[custom]
+sections: soa
+[soa]
diff --git a/src/lib/dns/tests/testdata/rdata_soa_toWireUncompressed.wire b/src/lib/dns/tests/testdata/rdata_soa_toWireUncompressed.wire
new file mode 100644
index 0000000..4b6442f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_soa_toWireUncompressed.wire
@@ -0,0 +1,10 @@
+###
+### This data file was auto-generated from rdata_soa_toWireUncompressed.spec
+###
+
+# SOA RDATA, RDLEN=54
+0036
+# NNAME=ns.example.com RNAME=root.example.com
+026e73076578616d706c6503636f6d00 04726f6f74076578616d706c6503636f6d00
+# SERIAL(2010012601) REFRESH(3600) RETRY(300) EXPIRE(3600000) MINIMUM(1200)
+77ce5bb9 00000e10 0000012c 0036ee80 000004b0
diff --git a/src/lib/dns/tests/testdata/rdata_srv_fromWire b/src/lib/dns/tests/testdata/rdata_srv_fromWire
new file mode 100644
index 0000000..0f1e4ec
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_srv_fromWire
@@ -0,0 +1,36 @@
+#
+# various kinds of SRV RDATA stored in an input buffer
+#
+# RDLENGTH=21 bytes
+# 0  1
+ 00 15
+# 2  3  4  5  6  7  8  9 10  1  2  3  4  5  6  7  8  9 20  1  2(bytes)
+ 00 01 00 05 05 dc 01 61 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+#
+# short length
+# 3  4
+ 00 12
+# 5  6  7  8  9 30  1  2  3  4  5  6  7  8  9 40  1  2  3  4  5
+ 00 01 00 05 05 dc 01 61 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+#
+# length too long
+# 6  7
+ 00 19
+#
+# 8  9 50  1  2  3  4  5  6  7  8  9 60  1  2  3  4  5  6  7  8
+ 00 01 00 05 05 dc 01 61 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+#
+#
+# incomplete target name
+# 9 70
+ 00 12
+# 1  2  3  4  5  6  7  8  9 80  1  2  3  4  5  6  7  8
+ 00 01 00 05 05 dc 01 61 07 65 78 61 6d 70 6c 65 03 63
+#
+#
+# Valid compressed target name: 'a' + pointer
+# 9 90
+ 00 0a
+#
+# 1  2  3  4  5  6  7  8  9 100
+ 00 01 00 05 05 dc 01 61 c0 0a
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire
new file mode 100644
index 0000000..added40
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire
@@ -0,0 +1,4 @@
+# SSHFP RDATA, RDLEN=22
+0016
+# ALGORITHM=2 FINGERPRINT_TYPE=1 FINGERPRINT=123456789abcdef67890123456789abcdef67890
+02 01 123456789abcdef67890123456789abcdef67890
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire1.spec b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire1.spec
new file mode 100644
index 0000000..e28a62f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire1.spec
@@ -0,0 +1,6 @@
+#
+# A simplest form of SSHFP: all default parameters
+#
+[custom]
+sections: sshfp
+[sshfp]
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire1.wire b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire1.wire
new file mode 100644
index 0000000..c7059e1
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire1.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_sshfp_fromWire1.spec
+###
+
+# SSHFP RDATA, RDLEN=22
+0016
+# ALGORITHM=2 FINGERPRINT_TYPE=1 FINGERPRINT=123456789abcdef67890123456789abcdef67890
+02 01 123456789abcdef67890123456789abcdef67890
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire10 b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire10
new file mode 100644
index 0000000..220e570
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire10
@@ -0,0 +1,6 @@
+# Test where fingerprint is missing
+
+# SSHFP RDATA, RDLEN=32
+0020
+# ALGORITHM=2 FINGERPRINT_TYPE=1 FINGERPRINT=(none)
+02 01
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire11 b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire11
new file mode 100644
index 0000000..a2f8636
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire11
@@ -0,0 +1,4 @@
+# Test where RDATA is completely missing
+
+# SSHFP RDATA, RDLEN=32
+0020
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire12 b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire12
new file mode 100644
index 0000000..eabd06b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire12
@@ -0,0 +1,4 @@
+# SSHFP RDATA, RDLEN=02
+0002
+# ALGORITHM=4 FINGERPRINT_TYPE=9
+04 09
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire2 b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire2
new file mode 100644
index 0000000..a695548
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire2
@@ -0,0 +1,4 @@
+# SSHFP RDATA, RDLEN=22
+0016
+# ALGORITHM=2 FINGERPRINT_TYPE=1 FINGERPRINT=123456789ABCDEF67890123456789abcdef67890
+02 01 123456789ABCDEF67890123456789abcdef67890
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire2.spec b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire2.spec
new file mode 100644
index 0000000..59a336e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire2.spec
@@ -0,0 +1,7 @@
+#
+# SSHFP RDATA
+#
+[custom]
+sections: sshfp
+[sshfp]
+fingerprint: 123456789abcdef67890123456789abcdef67890
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire2.wire b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire2.wire
new file mode 100644
index 0000000..e492316
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire2.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_sshfp_fromWire2.spec
+###
+
+# SSHFP RDATA, RDLEN=22
+0016
+# ALGORITHM=2 FINGERPRINT_TYPE=1 FINGERPRINT=123456789abcdef67890123456789abcdef67890
+02 01 123456789abcdef67890123456789abcdef67890
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire3.spec b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire3.spec
new file mode 100644
index 0000000..d111afd
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire3.spec
@@ -0,0 +1,8 @@
+#
+# SSHFP RDATA
+#
+[custom]
+sections: sshfp
+[sshfp]
+algorithm: 1
+fingerprint_type: 1
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire3.wire b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire3.wire
new file mode 100644
index 0000000..daa102f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire3.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_sshfp_fromWire3.spec
+###
+
+# SSHFP RDATA, RDLEN=22
+0016
+# ALGORITHM=1 FINGERPRINT_TYPE=1 FINGERPRINT=123456789abcdef67890123456789abcdef67890
+01 01 123456789abcdef67890123456789abcdef67890
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire4.spec b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire4.spec
new file mode 100644
index 0000000..b9b2658
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire4.spec
@@ -0,0 +1,8 @@
+#
+# SSHFP RDATA
+#
+[custom]
+sections: sshfp
+[sshfp]
+algorithm: 255
+fingerprint_type: 1
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire4.wire b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire4.wire
new file mode 100644
index 0000000..f05faad
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire4.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_sshfp_fromWire4.spec
+###
+
+# SSHFP RDATA, RDLEN=22
+0016
+# ALGORITHM=255 FINGERPRINT_TYPE=1 FINGERPRINT=123456789abcdef67890123456789abcdef67890
+ff 01 123456789abcdef67890123456789abcdef67890
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire5.spec b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire5.spec
new file mode 100644
index 0000000..b3a19fa
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire5.spec
@@ -0,0 +1,8 @@
+#
+# SSHFP RDATA
+#
+[custom]
+sections: sshfp
+[sshfp]
+algorithm: 0
+fingerprint_type: 1
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire5.wire b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire5.wire
new file mode 100644
index 0000000..ddc8edb
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire5.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_sshfp_fromWire5.spec
+###
+
+# SSHFP RDATA, RDLEN=22
+0016
+# ALGORITHM=0 FINGERPRINT_TYPE=1 FINGERPRINT=123456789abcdef67890123456789abcdef67890
+00 01 123456789abcdef67890123456789abcdef67890
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire6.spec b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire6.spec
new file mode 100644
index 0000000..437e282
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire6.spec
@@ -0,0 +1,8 @@
+#
+# SSHFP RDATA
+#
+[custom]
+sections: sshfp
+[sshfp]
+algorithm: 5
+fingerprint_type: 0
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire6.wire b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire6.wire
new file mode 100644
index 0000000..d4e591e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire6.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_sshfp_fromWire6.spec
+###
+
+# SSHFP RDATA, RDLEN=22
+0016
+# ALGORITHM=5 FINGERPRINT_TYPE=0 FINGERPRINT=123456789abcdef67890123456789abcdef67890
+05 00 123456789abcdef67890123456789abcdef67890
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire7.spec b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire7.spec
new file mode 100644
index 0000000..8e21d11
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire7.spec
@@ -0,0 +1,8 @@
+#
+# SSHFP RDATA
+#
+[custom]
+sections: sshfp
+[sshfp]
+algorithm: 255
+fingerprint_type: 255
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire7.wire b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire7.wire
new file mode 100644
index 0000000..c8b9d8b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire7.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_sshfp_fromWire7.spec
+###
+
+# SSHFP RDATA, RDLEN=22
+0016
+# ALGORITHM=255 FINGERPRINT_TYPE=255 FINGERPRINT=123456789abcdef67890123456789abcdef67890
+ff ff 123456789abcdef67890123456789abcdef67890
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire8.spec b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire8.spec
new file mode 100644
index 0000000..98aa00f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire8.spec
@@ -0,0 +1,9 @@
+#
+# SSHFP RDATA
+#
+[custom]
+sections: sshfp
+[sshfp]
+fingerprint: 082359342fd9
+algorithm: 255
+fingerprint_type: 255
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire8.wire b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire8.wire
new file mode 100644
index 0000000..32cede8
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire8.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_sshfp_fromWire8.spec
+###
+
+# SSHFP RDATA, RDLEN=8
+0008
+# ALGORITHM=255 FINGERPRINT_TYPE=255 FINGERPRINT=082359342fd9
+ff ff 082359342fd9
diff --git a/src/lib/dns/tests/testdata/rdata_sshfp_fromWire9 b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire9
new file mode 100644
index 0000000..05fc806
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_sshfp_fromWire9
@@ -0,0 +1,6 @@
+# Test where fingerprint length is smaller than what RDATA len indicates
+
+# SSHFP RDATA, RDLEN=32
+0020
+# ALGORITHM=2 FINGERPRINT_TYPE=1 FINGERPRINT=123456789abcdef67890123456789abcdef67890
+02 01 123456789abcdef67890123456789abcdef67890
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire1.spec b/src/lib/dns/tests/testdata/rdata_tkey_fromWire1.spec
new file mode 100644
index 0000000..e46d9b3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire1.spec
@@ -0,0 +1,6 @@
+#
+# A simplest form of TKEY: all default parameters
+#
+[custom]
+sections: tkey
+[tkey]
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire1.wire b/src/lib/dns/tests/testdata/rdata_tkey_fromWire1.wire
new file mode 100644
index 0000000..e8ee944
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire1.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tkey_fromWire1.spec
+###
+
+# TKEY RDATA, RDLEN=58
+003a
+# Algorithm=gss-tsig
+086773732d7473696700
+# Inception=1619870400 Expire=1619874000 Mode=3 Error=0
+608d42c0 608d50d0 0003 0000
+# Key Len=32 Key=(see hex)
+0020 7878787878787878787878787878787878787878787878787878787878787878
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire2.spec b/src/lib/dns/tests/testdata/rdata_tkey_fromWire2.spec
new file mode 100644
index 0000000..e4a1920
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire2.spec
@@ -0,0 +1,8 @@
+#
+# TKEY with other data
+#
+[custom]
+sections: tkey
+[tkey]
+other_len: 8
+other_data: abcd0123
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire2.wire b/src/lib/dns/tests/testdata/rdata_tkey_fromWire2.wire
new file mode 100644
index 0000000..614844f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire2.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tkey_fromWire2.spec
+###
+
+# TKEY RDATA, RDLEN=66
+0042
+# Algorithm=gss-tsig
+086773732d7473696700
+# Inception=1619870400 Expire=1619874000 Mode=3 Error=0
+608d42c0 608d50d0 0003 0000
+# Key Len=32 Key=(see hex)
+0020 7878787878787878787878787878787878787878787878787878787878787878
+# Other-Len=8 Other-Data=(see hex)
+0008 6162636430313233
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire3.spec b/src/lib/dns/tests/testdata/rdata_tkey_fromWire3.spec
new file mode 100644
index 0000000..2566b58
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire3.spec
@@ -0,0 +1,9 @@
+#
+# TKEY without Key
+#
+[custom]
+sections: tkey
+[tkey]
+key_len: 0
+other_len: 8
+other_data: abcd0123
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire3.wire b/src/lib/dns/tests/testdata/rdata_tkey_fromWire3.wire
new file mode 100644
index 0000000..df27910
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire3.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tkey_fromWire3.spec
+###
+
+# TKEY RDATA, RDLEN=34
+0022
+# Algorithm=gss-tsig
+086773732d7473696700
+# Inception=1619870400 Expire=1619874000 Mode=3 Error=0
+608d42c0 608d50d0 0003 0000
+# Key Len=0 Key=(see hex)
+0000
+# Other-Len=8 Other-Data=(see hex)
+0008 6162636430313233
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire4.spec b/src/lib/dns/tests/testdata/rdata_tkey_fromWire4.spec
new file mode 100644
index 0000000..33459eb
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire4.spec
@@ -0,0 +1,11 @@
+#
+# A simplest form of TKEY, but the algorithm name is compressed (quite
+# pathological, but we accept it)
+#
+[custom]
+sections: name:tkey
+[name]
+name: gss-tsig
+[tkey]
+algorithm: ptr=0
+key_len: 32
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire4.wire b/src/lib/dns/tests/testdata/rdata_tkey_fromWire4.wire
new file mode 100644
index 0000000..550052e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire4.wire
@@ -0,0 +1,17 @@
+###
+### This data file was auto-generated from rdata_tkey_fromWire4.spec
+###
+
+# DNS Name: gss-tsig
+086773732d7473696700
+
+# TKEY RDATA, RDLEN=50
+0032
+# Algorithm=ptr=0
+c000
+# Inception=1619870400 Expire=1619874000 Mode=3 Error=0
+608d42c0 608d50d0 0003 0000
+# Key Len=32 Key=(see hex)
+0020 7878787878787878787878787878787878787878787878787878787878787878
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire5.spec b/src/lib/dns/tests/testdata/rdata_tkey_fromWire5.spec
new file mode 100644
index 0000000..6cfa4b4
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire5.spec
@@ -0,0 +1,7 @@
+#
+# TKEY-like RDATA but RDLEN is too short.
+#
+[custom]
+sections: tkey
+[tkey]
+rdlen: 57
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire5.wire b/src/lib/dns/tests/testdata/rdata_tkey_fromWire5.wire
new file mode 100644
index 0000000..fa32566
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire5.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tkey_fromWire5.spec
+###
+
+# TKEY RDATA, RDLEN=57
+0039
+# Algorithm=gss-tsig
+086773732d7473696700
+# Inception=1619870400 Expire=1619874000 Mode=3 Error=0
+608d42c0 608d50d0 0003 0000
+# Key Len=32 Key=(see hex)
+0020 7878787878787878787878787878787878787878787878787878787878787878
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire6.spec b/src/lib/dns/tests/testdata/rdata_tkey_fromWire6.spec
new file mode 100644
index 0000000..87460a2
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire6.spec
@@ -0,0 +1,7 @@
+#
+# TKEY-like RDATA but RDLEN is too long.
+#
+[custom]
+sections: tkey
+[tkey]
+rdlen: 60
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire6.wire b/src/lib/dns/tests/testdata/rdata_tkey_fromWire6.wire
new file mode 100644
index 0000000..7f5f112
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire6.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tkey_fromWire6.spec
+###
+
+# TKEY RDATA, RDLEN=60
+003c
+# Algorithm=gss-tsig
+086773732d7473696700
+# Inception=1619870400 Expire=1619874000 Mode=3 Error=0
+608d42c0 608d50d0 0003 0000
+# Key Len=32 Key=(see hex)
+0020 7878787878787878787878787878787878787878787878787878787878787878
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire7.spec b/src/lib/dns/tests/testdata/rdata_tkey_fromWire7.spec
new file mode 100644
index 0000000..3fc0929
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire7.spec
@@ -0,0 +1,8 @@
+#
+# TKEY-like RDATA but algorithm name is broken.
+#
+[custom]
+sections: tkey
+[tkey]
+algorithm: "01234567890123456789012345678901234567890123456789012345678901234"
+key_len: 32
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire7.wire b/src/lib/dns/tests/testdata/rdata_tkey_fromWire7.wire
new file mode 100644
index 0000000..73b277c
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire7.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tkey_fromWire7.spec
+###
+
+# TKEY RDATA, RDLEN=117
+0075
+# Algorithm="01234567890123456789012345678901234567890123456789012345678901234"
+432230313233343536373839303132333435363738393031323334353637383930313233343536373839303132333435363738393031323334353637383930313233342200
+# Inception=1619870400 Expire=1619874000 Mode=3 Error=0
+608d42c0 608d50d0 0003 0000
+# Key Len=32 Key=(see hex)
+0020 7878787878787878787878787878787878787878787878787878787878787878
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire8.spec b/src/lib/dns/tests/testdata/rdata_tkey_fromWire8.spec
new file mode 100644
index 0000000..8338279
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire8.spec
@@ -0,0 +1,8 @@
+#
+# TKEY-like RDATA but Key len is bogus
+#
+[custom]
+sections: tkey
+[tkey]
+key_len: 65535
+key: "dummy data"
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire8.wire b/src/lib/dns/tests/testdata/rdata_tkey_fromWire8.wire
new file mode 100644
index 0000000..abeb95b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire8.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tkey_fromWire8.spec
+###
+
+# TKEY RDATA, RDLEN=38
+0026
+# Algorithm=gss-tsig
+086773732d7473696700
+# Inception=1619870400 Expire=1619874000 Mode=3 Error=0
+608d42c0 608d50d0 0003 0000
+# Key Len=65535 Key=(see hex)
+ffff 2264756d6d79206461746122
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire9.spec b/src/lib/dns/tests/testdata/rdata_tkey_fromWire9.spec
new file mode 100644
index 0000000..9fb63e0
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire9.spec
@@ -0,0 +1,8 @@
+#
+# TKEY-like RDATA but Other-Data length is bogus
+#
+[custom]
+sections: tkey
+[tkey]
+other_len: 65535
+otherdata: "dummy data"
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_fromWire9.wire b/src/lib/dns/tests/testdata/rdata_tkey_fromWire9.wire
new file mode 100644
index 0000000..8e5f943
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_fromWire9.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tkey_fromWire9.spec
+###
+
+# TKEY RDATA, RDLEN=58
+003a
+# Algorithm=gss-tsig
+086773732d7473696700
+# Inception=1619870400 Expire=1619874000 Mode=3 Error=0
+608d42c0 608d50d0 0003 0000
+# Key Len=32 Key=(see hex)
+0020 7878787878787878787878787878787878787878787878787878787878787878
+# Other-Len=65535 Other-Data=(see hex)
+ffff
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_toWire1.spec b/src/lib/dns/tests/testdata/rdata_tkey_toWire1.spec
new file mode 100644
index 0000000..42521a3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_toWire1.spec
@@ -0,0 +1,8 @@
+#
+# An artificial TKEY RDATA for toWire test.
+#
+[custom]
+sections: tkey
+[tkey]
+algorithm: gss-tsig
+key_len: 0
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_toWire1.wire b/src/lib/dns/tests/testdata/rdata_tkey_toWire1.wire
new file mode 100644
index 0000000..3f49a69
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_toWire1.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tkey_toWire1.spec
+###
+
+# TKEY RDATA, RDLEN=26
+001a
+# Algorithm=gss-tsig
+086773732d7473696700
+# Inception=1619870400 Expire=1619874000 Mode=3 Error=0
+608d42c0 608d50d0 0003 0000
+# Key Len=0 Key=(see hex)
+0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_toWire2.spec b/src/lib/dns/tests/testdata/rdata_tkey_toWire2.spec
new file mode 100644
index 0000000..25d47e5
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_toWire2.spec
@@ -0,0 +1,11 @@
+#
+# An artificial TKEY RDATA for toWire test.
+#
+[custom]
+sections: tkey
+[tkey]
+algorithm: GSS-TSIG
+error: 16
+key_len: 12
+# 0x1402... would be FAKEFAKE... if encoded in BASE64
+key: 0x140284140284140284140284
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_toWire2.wire b/src/lib/dns/tests/testdata/rdata_tkey_toWire2.wire
new file mode 100644
index 0000000..a1fdb9a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_toWire2.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tkey_toWire2.spec
+###
+
+# TKEY RDATA, RDLEN=38
+0026
+# Algorithm=GSS-TSIG
+084753532d5453494700
+# Inception=1619870400 Expire=1619874000 Mode=3 Error=16
+608d42c0 608d50d0 0003 0010
+# Key Len=12 Key=(see hex)
+000c 140284140284140284140284
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_toWire3.spec b/src/lib/dns/tests/testdata/rdata_tkey_toWire3.spec
new file mode 100644
index 0000000..b3ea3db
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_toWire3.spec
@@ -0,0 +1,13 @@
+#
+# An artificial TKEY RDATA for toWire test.
+#
+[custom]
+sections: tkey
+[tkey]
+algorithm: gss.tsig
+error: 16
+key_len: 12
+# 0x1402... would be FAKEFAKE... if encoded in BASE64
+key: 0x140284140284140284140284
+other_len: 6
+other_data: 0x140284140284
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_toWire3.wire b/src/lib/dns/tests/testdata/rdata_tkey_toWire3.wire
new file mode 100644
index 0000000..f2f8a6f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_toWire3.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tkey_toWire3.spec
+###
+
+# TKEY RDATA, RDLEN=44
+002c
+# Algorithm=gss.tsig
+03677373047473696700
+# Inception=1619870400 Expire=1619874000 Mode=3 Error=16
+608d42c0 608d50d0 0003 0010
+# Key Len=12 Key=(see hex)
+000c 140284140284140284140284
+# Other-Len=6 Other-Data=(see hex)
+0006 140284140284
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_toWire4.spec b/src/lib/dns/tests/testdata/rdata_tkey_toWire4.spec
new file mode 100644
index 0000000..e403c00
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_toWire4.spec
@@ -0,0 +1,10 @@
+#
+# An artificial TKEY RDATA for toWire test.
+#
+[custom]
+sections: name:tkey
+[name]
+name: gss-tsig
+[tkey]
+algorithm: gss-tsig
+key_len: 0
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_toWire4.wire b/src/lib/dns/tests/testdata/rdata_tkey_toWire4.wire
new file mode 100644
index 0000000..81a1443
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_toWire4.wire
@@ -0,0 +1,17 @@
+###
+### This data file was auto-generated from rdata_tkey_toWire4.spec
+###
+
+# DNS Name: gss-tsig
+086773732d7473696700
+
+# TKEY RDATA, RDLEN=26
+001a
+# Algorithm=gss-tsig
+086773732d7473696700
+# Inception=1619870400 Expire=1619874000 Mode=3 Error=0
+608d42c0 608d50d0 0003 0000
+# Key Len=0 Key=(see hex)
+0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_toWire5.spec b/src/lib/dns/tests/testdata/rdata_tkey_toWire5.spec
new file mode 100644
index 0000000..b4a1bca
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_toWire5.spec
@@ -0,0 +1,10 @@
+#
+# An artificial TKEY RDATA for toWire test.
+#
+[custom]
+sections: tkey:name
+[tkey]
+algorithm: gss-tsig
+key_len: 0
+[name]
+name: ptr=2
diff --git a/src/lib/dns/tests/testdata/rdata_tkey_toWire5.wire b/src/lib/dns/tests/testdata/rdata_tkey_toWire5.wire
new file mode 100644
index 0000000..e59a1f0
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tkey_toWire5.wire
@@ -0,0 +1,17 @@
+###
+### This data file was auto-generated from rdata_tkey_toWire5.spec
+###
+
+# TKEY RDATA, RDLEN=26
+001a
+# Algorithm=gss-tsig
+086773732d7473696700
+# Inception=1619870400 Expire=1619874000 Mode=3 Error=0
+608d42c0 608d50d0 0003 0000
+# Key Len=0 Key=(see hex)
+0000
+# Other-Len=0 Other-Data=(see hex)
+0000
+
+# DNS Name: ptr=2
+c002
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire
new file mode 100644
index 0000000..38e279c
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire
@@ -0,0 +1,4 @@
+# TLSA RDATA, RDLEN=35
+0023
+# CERTIFICATE_USAGE=0 SELECTOR=0 MATCHING_TYPE=1 CERTIFICATE_ASSOCIATION_DATA=...
+00 00 01 d2abde240d7cd3ee6b4b28c54df034b97983a1d16e8a410e4561cb106618e971
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire10 b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire10
new file mode 100644
index 0000000..67cecb1
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire10
@@ -0,0 +1,6 @@
+# Test where certificate association data is missing.
+
+# TLSA RDATA, RDLEN=35
+0023
+# CERTIFICATE_USAGE=0 SELECTOR=0 MATCHING_TYPE=1 CERTIFICATE_ASSOCIATION_DATA=(missing)
+00 00 01
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire11 b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire11
new file mode 100644
index 0000000..4b8ec93
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire11
@@ -0,0 +1,4 @@
+# Test where RDATA is completely missing
+
+# TLSA RDATA, RDLEN=35
+0023
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire12 b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire12
new file mode 100644
index 0000000..71c7b9c
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire12
@@ -0,0 +1,4 @@
+# TLSA RDATA, RDLEN=3
+0003
+# CERTIFICATE_USAGE=0 SELECTOR=0 MATCHING_TYPE=1 CERTIFICATE_ASSOCIATION_DATA=(none)
+03 01 02
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire2 b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire2
new file mode 100644
index 0000000..36ce278
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire2
@@ -0,0 +1,4 @@
+# TLSA RDATA, RDLEN=35
+0023
+# CERTIFICATE_USAGE=0 SELECTOR=0 MATCHING_TYPE=1 CERTIFICATE_ASSOCIATION_DATA=...
+00 00 01 d2abde240d7cd3ee6b4b28c54df034b97983A1D16E8A410E4561CB106618E971
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire3.spec b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire3.spec
new file mode 100644
index 0000000..39c8057
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire3.spec
@@ -0,0 +1,7 @@
+#
+# TLSA RDATA
+#
+[custom]
+sections: tlsa
+[tlsa]
+certificate_usage: 0
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire3.wire b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire3.wire
new file mode 100644
index 0000000..6a8b552
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire3.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_tlsa_fromWire3.spec
+###
+
+# TLSA RDATA, RDLEN=34
+0022
+# CERTIFICATE_USAGE=0 SELECTOR=0 MATCHING_TYPE=1 CERTIFICATE_ASSOCIATION_DATA=d2abde240d7cd3ee6b4b28c54df034b97983a1d16e8a410e4561cb106618e971
+00 00 01 d2abde240d7cd3ee6b4b28c54df034b97983a1d16e8a410e4561cb106618e971
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire4.spec b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire4.spec
new file mode 100644
index 0000000..d97ae6a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire4.spec
@@ -0,0 +1,7 @@
+#
+# TLSA RDATA
+#
+[custom]
+sections: tlsa
+[tlsa]
+certificate_usage: 255
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire4.wire b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire4.wire
new file mode 100644
index 0000000..b5a39c8
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire4.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_tlsa_fromWire4.spec
+###
+
+# TLSA RDATA, RDLEN=34
+0022
+# CERTIFICATE_USAGE=255 SELECTOR=0 MATCHING_TYPE=1 CERTIFICATE_ASSOCIATION_DATA=d2abde240d7cd3ee6b4b28c54df034b97983a1d16e8a410e4561cb106618e971
+ff 00 01 d2abde240d7cd3ee6b4b28c54df034b97983a1d16e8a410e4561cb106618e971
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire5.spec b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire5.spec
new file mode 100644
index 0000000..cc3e296
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire5.spec
@@ -0,0 +1,7 @@
+#
+# TLSA RDATA
+#
+[custom]
+sections: tlsa
+[tlsa]
+selector: 255
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire5.wire b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire5.wire
new file mode 100644
index 0000000..b79f97d
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire5.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_tlsa_fromWire5.spec
+###
+
+# TLSA RDATA, RDLEN=34
+0022
+# CERTIFICATE_USAGE=0 SELECTOR=255 MATCHING_TYPE=1 CERTIFICATE_ASSOCIATION_DATA=d2abde240d7cd3ee6b4b28c54df034b97983a1d16e8a410e4561cb106618e971
+00 ff 01 d2abde240d7cd3ee6b4b28c54df034b97983a1d16e8a410e4561cb106618e971
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire6.spec b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire6.spec
new file mode 100644
index 0000000..eed0ab9
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire6.spec
@@ -0,0 +1,7 @@
+#
+# TLSA RDATA
+#
+[custom]
+sections: tlsa
+[tlsa]
+matching_type: 255
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire6.wire b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire6.wire
new file mode 100644
index 0000000..02afe27
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire6.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_tlsa_fromWire6.spec
+###
+
+# TLSA RDATA, RDLEN=34
+0022
+# CERTIFICATE_USAGE=0 SELECTOR=0 MATCHING_TYPE=255 CERTIFICATE_ASSOCIATION_DATA=d2abde240d7cd3ee6b4b28c54df034b97983a1d16e8a410e4561cb106618e971
+00 00 ff d2abde240d7cd3ee6b4b28c54df034b97983a1d16e8a410e4561cb106618e971
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire7.spec b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire7.spec
new file mode 100644
index 0000000..576df1e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire7.spec
@@ -0,0 +1,9 @@
+#
+# TLSA RDATA
+#
+[custom]
+sections: tlsa
+[tlsa]
+certificate_usage: 3
+selector: 1
+matching_type: 2
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire7.wire b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire7.wire
new file mode 100644
index 0000000..e5c23a4
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire7.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_tlsa_fromWire7.spec
+###
+
+# TLSA RDATA, RDLEN=34
+0022
+# CERTIFICATE_USAGE=3 SELECTOR=1 MATCHING_TYPE=2 CERTIFICATE_ASSOCIATION_DATA=d2abde240d7cd3ee6b4b28c54df034b97983a1d16e8a410e4561cb106618e971
+03 01 02 d2abde240d7cd3ee6b4b28c54df034b97983a1d16e8a410e4561cb106618e971
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire8.spec b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire8.spec
new file mode 100644
index 0000000..ef5c108
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire8.spec
@@ -0,0 +1,7 @@
+#
+# TLSA RDATA
+#
+[custom]
+sections: tlsa
+[tlsa]
+certificate_association_data: '0123'
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire8.wire b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire8.wire
new file mode 100644
index 0000000..dc29a0b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire8.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_tlsa_fromWire8.spec
+###
+
+# TLSA RDATA, RDLEN=4
+0004
+# CERTIFICATE_USAGE=0 SELECTOR=0 MATCHING_TYPE=1 CERTIFICATE_ASSOCIATION_DATA=0123
+00 00 01 0123
diff --git a/src/lib/dns/tests/testdata/rdata_tlsa_fromWire9 b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire9
new file mode 100644
index 0000000..fc4560a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tlsa_fromWire9
@@ -0,0 +1,7 @@
+# Test where certificate association data length is smaller than what
+# RDATA length indicates.
+
+# TLSA RDATA, RDLEN=64
+0040
+# CERTIFICATE_USAGE=0 SELECTOR=0 MATCHING_TYPE=1 CERTIFICATE_ASSOCIATION_DATA=(32 bytes)
+00 00 01 d2abde240d7cd3ee6b4b28c54df034b97983a1d16e8a410e4561cb106618e971
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire1.spec b/src/lib/dns/tests/testdata/rdata_tsig_fromWire1.spec
new file mode 100644
index 0000000..a30c371
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire1.spec
@@ -0,0 +1,6 @@
+#
+# A simplest form of TSIG: all default parameters
+#
+[custom]
+sections: tsig
+[tsig]
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire1.wire b/src/lib/dns/tests/testdata/rdata_tsig_fromWire1.wire
new file mode 100644
index 0000000..cec3a0f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire1.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tsig_fromWire1.spec
+###
+
+# TSIG RDATA, RDLEN=61
+003d
+# Algorithm=hmac-sha256 Time-Signed=1286978795 Fudge=300
+0b686d61632d73686132353600 00004cb5bceb 012c
+# MAC Size=32 MAC=(see hex)
+0020 7878787878787878787878787878787878787878787878787878787878787878
+# Original-ID=2845 Error=0
+0b1d 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire2.spec b/src/lib/dns/tests/testdata/rdata_tsig_fromWire2.spec
new file mode 100644
index 0000000..d1e49a5
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire2.spec
@@ -0,0 +1,8 @@
+#
+# TSIG with other data (error = BADTIME(18))
+#
+[custom]
+sections: tsig
+[tsig]
+mac_size: 0
+error: 18
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire2.wire b/src/lib/dns/tests/testdata/rdata_tsig_fromWire2.wire
new file mode 100644
index 0000000..ca85df4
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire2.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tsig_fromWire2.spec
+###
+
+# TSIG RDATA, RDLEN=35
+0023
+# Algorithm=hmac-sha256 Time-Signed=1286978795 Fudge=300
+0b686d61632d73686132353600 00004cb5bceb 012c
+# MAC Size=0 MAC=(see hex)
+0000
+# Original-ID=2845 Error=18
+0b1d 0012
+# Other-Len=6 Other-Data=(see hex)
+0006 00004cb5be18
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire3.spec b/src/lib/dns/tests/testdata/rdata_tsig_fromWire3.spec
new file mode 100644
index 0000000..57f8e83
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire3.spec
@@ -0,0 +1,8 @@
+#
+# TSIG without MAC (error = BADSIG(16))
+#
+[custom]
+sections: tsig
+[tsig]
+mac_size: 0
+error: 16
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire3.wire b/src/lib/dns/tests/testdata/rdata_tsig_fromWire3.wire
new file mode 100644
index 0000000..16c3e39
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire3.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tsig_fromWire3.spec
+###
+
+# TSIG RDATA, RDLEN=29
+001d
+# Algorithm=hmac-sha256 Time-Signed=1286978795 Fudge=300
+0b686d61632d73686132353600 00004cb5bceb 012c
+# MAC Size=0 MAC=(see hex)
+0000
+# Original-ID=2845 Error=16
+0b1d 0010
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire4.spec b/src/lib/dns/tests/testdata/rdata_tsig_fromWire4.spec
new file mode 100644
index 0000000..8c38e9e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire4.spec
@@ -0,0 +1,11 @@
+#
+# A simplest form of TSIG, but the algorithm name is compressed (quite
+# pathological, but we accept it)
+#
+[custom]
+sections: name:tsig
+[name]
+name: hmac-sha256
+[tsig]
+algorithm: ptr=0
+mac_size: 32
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire4.wire b/src/lib/dns/tests/testdata/rdata_tsig_fromWire4.wire
new file mode 100644
index 0000000..6b8e0f3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire4.wire
@@ -0,0 +1,17 @@
+###
+### This data file was auto-generated from rdata_tsig_fromWire4.spec
+###
+
+# DNS Name: hmac-sha256
+0b686d61632d73686132353600
+
+# TSIG RDATA, RDLEN=50
+0032
+# Algorithm=ptr=0 Time-Signed=1286978795 Fudge=300
+c000 00004cb5bceb 012c
+# MAC Size=32 MAC=(see hex)
+0020 7878787878787878787878787878787878787878787878787878787878787878
+# Original-ID=2845 Error=0
+0b1d 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire5.spec b/src/lib/dns/tests/testdata/rdata_tsig_fromWire5.spec
new file mode 100644
index 0000000..da90b18
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire5.spec
@@ -0,0 +1,7 @@
+#
+# TSIG-like RDATA but RDLEN is too short.
+#
+[custom]
+sections: tsig
+[tsig]
+rdlen: 60
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire5.wire b/src/lib/dns/tests/testdata/rdata_tsig_fromWire5.wire
new file mode 100644
index 0000000..9656ce2
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire5.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tsig_fromWire5.spec
+###
+
+# TSIG RDATA, RDLEN=60
+003c
+# Algorithm=hmac-sha256 Time-Signed=1286978795 Fudge=300
+0b686d61632d73686132353600 00004cb5bceb 012c
+# MAC Size=32 MAC=(see hex)
+0020 7878787878787878787878787878787878787878787878787878787878787878
+# Original-ID=2845 Error=0
+0b1d 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire6.spec b/src/lib/dns/tests/testdata/rdata_tsig_fromWire6.spec
new file mode 100644
index 0000000..9d2f627
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire6.spec
@@ -0,0 +1,7 @@
+#
+# TSIG-like RDATA but RDLEN is too long.
+#
+[custom]
+sections: tsig
+[tsig]
+rdlen: 63
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire6.wire b/src/lib/dns/tests/testdata/rdata_tsig_fromWire6.wire
new file mode 100644
index 0000000..bb1ecfb
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire6.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tsig_fromWire6.spec
+###
+
+# TSIG RDATA, RDLEN=63
+003f
+# Algorithm=hmac-sha256 Time-Signed=1286978795 Fudge=300
+0b686d61632d73686132353600 00004cb5bceb 012c
+# MAC Size=32 MAC=(see hex)
+0020 7878787878787878787878787878787878787878787878787878787878787878
+# Original-ID=2845 Error=0
+0b1d 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire7.spec b/src/lib/dns/tests/testdata/rdata_tsig_fromWire7.spec
new file mode 100644
index 0000000..ed7a81c
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire7.spec
@@ -0,0 +1,8 @@
+#
+# TSIG-like RDATA but algorithm name is broken.
+#
+[custom]
+sections: tsig
+[tsig]
+algorithm: "01234567890123456789012345678901234567890123456789012345678901234"
+mac_size: 32
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire7.wire b/src/lib/dns/tests/testdata/rdata_tsig_fromWire7.wire
new file mode 100644
index 0000000..327211f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire7.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tsig_fromWire7.spec
+###
+
+# TSIG RDATA, RDLEN=117
+0075
+# Algorithm="01234567890123456789012345678901234567890123456789012345678901234" Time-Signed=1286978795 Fudge=300
+432230313233343536373839303132333435363738393031323334353637383930313233343536373839303132333435363738393031323334353637383930313233342200 00004cb5bceb 012c
+# MAC Size=32 MAC=(see hex)
+0020 7878787878787878787878787878787878787878787878787878787878787878
+# Original-ID=2845 Error=0
+0b1d 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire8.spec b/src/lib/dns/tests/testdata/rdata_tsig_fromWire8.spec
new file mode 100644
index 0000000..0b44f87
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire8.spec
@@ -0,0 +1,8 @@
+#
+# TSIG-like RDATA but MAC size is bogus
+#
+[custom]
+sections: tsig
+[tsig]
+mac_size: 65535
+mac: "dummy data"
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire8.wire b/src/lib/dns/tests/testdata/rdata_tsig_fromWire8.wire
new file mode 100644
index 0000000..a4209f9
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire8.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tsig_fromWire8.spec
+###
+
+# TSIG RDATA, RDLEN=41
+0029
+# Algorithm=hmac-sha256 Time-Signed=1286978795 Fudge=300
+0b686d61632d73686132353600 00004cb5bceb 012c
+# MAC Size=65535 MAC=(see hex)
+ffff 2264756d6d79206461746122
+# Original-ID=2845 Error=0
+0b1d 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire9.spec b/src/lib/dns/tests/testdata/rdata_tsig_fromWire9.spec
new file mode 100644
index 0000000..f512fb4
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire9.spec
@@ -0,0 +1,8 @@
+#
+# TSIG-like RDATA but Other-Data length is bogus
+#
+[custom]
+sections: tsig
+[tsig]
+other_len: 65535
+otherdata: "dummy data"
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_fromWire9.wire b/src/lib/dns/tests/testdata/rdata_tsig_fromWire9.wire
new file mode 100644
index 0000000..b356825
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_fromWire9.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tsig_fromWire9.spec
+###
+
+# TSIG RDATA, RDLEN=61
+003d
+# Algorithm=hmac-sha256 Time-Signed=1286978795 Fudge=300
+0b686d61632d73686132353600 00004cb5bceb 012c
+# MAC Size=32 MAC=(see hex)
+0020 7878787878787878787878787878787878787878787878787878787878787878
+# Original-ID=2845 Error=0
+0b1d 0000
+# Other-Len=65535 Other-Data=(see hex)
+ffff
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_toWire1.spec b/src/lib/dns/tests/testdata/rdata_tsig_toWire1.spec
new file mode 100644
index 0000000..eb74000
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_toWire1.spec
@@ -0,0 +1,11 @@
+#
+# An artificial TSIG RDATA for toWire test.
+#
+[custom]
+sections: tsig
+[tsig]
+algorithm: hmac-md5
+time_signed: 1286779327
+mac_size: 0
+original_id: 16020
+error: 17
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_toWire1.wire b/src/lib/dns/tests/testdata/rdata_tsig_toWire1.wire
new file mode 100644
index 0000000..c368853
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_toWire1.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tsig_toWire1.spec
+###
+
+# TSIG RDATA, RDLEN=42
+002a
+# Algorithm=hmac-md5 Time-Signed=1286779327 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004cb2b1bf 012c
+# MAC Size=0 MAC=(see hex)
+0000
+# Original-ID=16020 Error=17
+3e94 0011
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_toWire2.spec b/src/lib/dns/tests/testdata/rdata_tsig_toWire2.spec
new file mode 100644
index 0000000..b2c38e9
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_toWire2.spec
@@ -0,0 +1,13 @@
+#
+# An artificial TSIG RDATA for toWire test.
+#
+[custom]
+sections: tsig
+[tsig]
+algorithm: hmac-sha256
+time_signed: 1286779327
+mac_size: 12
+# 0x1402... would be FAKEFAKE... if encoded in BASE64
+mac: 0x140284140284140284140284
+original_id: 16020
+error: 16
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_toWire2.wire b/src/lib/dns/tests/testdata/rdata_tsig_toWire2.wire
new file mode 100644
index 0000000..7ea336d
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_toWire2.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tsig_toWire2.spec
+###
+
+# TSIG RDATA, RDLEN=41
+0029
+# Algorithm=hmac-sha256 Time-Signed=1286779327 Fudge=300
+0b686d61632d73686132353600 00004cb2b1bf 012c
+# MAC Size=12 MAC=(see hex)
+000c 140284140284140284140284
+# Original-ID=16020 Error=16
+3e94 0010
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_toWire3.spec b/src/lib/dns/tests/testdata/rdata_tsig_toWire3.spec
new file mode 100644
index 0000000..6520a08
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_toWire3.spec
@@ -0,0 +1,15 @@
+#
+# An artificial TSIG RDATA for toWire test.
+#
+[custom]
+sections: tsig
+[tsig]
+algorithm: hmac-sha1
+time_signed: 1286779327
+mac_size: 12
+# 0x1402... would be FAKEFAKE... if encoded in BASE64
+mac: 0x140284140284140284140284
+original_id: 16020
+error: 18
+other_len: 6
+other_data: 0x140284140284
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_toWire3.wire b/src/lib/dns/tests/testdata/rdata_tsig_toWire3.wire
new file mode 100644
index 0000000..535a83b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_toWire3.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from rdata_tsig_toWire3.spec
+###
+
+# TSIG RDATA, RDLEN=45
+002d
+# Algorithm=hmac-sha1 Time-Signed=1286779327 Fudge=300
+09686d61632d7368613100 00004cb2b1bf 012c
+# MAC Size=12 MAC=(see hex)
+000c 140284140284140284140284
+# Original-ID=16020 Error=18
+3e94 0012
+# Other-Len=6 Other-Data=(see hex)
+0006 140284140284
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_toWire4.spec b/src/lib/dns/tests/testdata/rdata_tsig_toWire4.spec
new file mode 100644
index 0000000..d95cd23
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_toWire4.spec
@@ -0,0 +1,13 @@
+#
+# An artificial TSIG RDATA for toWire test.
+#
+[custom]
+sections: name:tsig
+[name]
+name: hmac-md5.sig-alg.reg.int.
+[tsig]
+algorithm: hmac-md5
+time_signed: 1286779327
+mac_size: 0
+original_id: 16020
+error: 17
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_toWire4.wire b/src/lib/dns/tests/testdata/rdata_tsig_toWire4.wire
new file mode 100644
index 0000000..5e8f68b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_toWire4.wire
@@ -0,0 +1,17 @@
+###
+### This data file was auto-generated from rdata_tsig_toWire4.spec
+###
+
+# DNS Name: hmac-md5.sig-alg.reg.int.
+08686d61632d6d6435077369672d616c670372656703696e7400
+
+# TSIG RDATA, RDLEN=42
+002a
+# Algorithm=hmac-md5 Time-Signed=1286779327 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004cb2b1bf 012c
+# MAC Size=0 MAC=(see hex)
+0000
+# Original-ID=16020 Error=17
+3e94 0011
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_toWire5.spec b/src/lib/dns/tests/testdata/rdata_tsig_toWire5.spec
new file mode 100644
index 0000000..81e3a78
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_toWire5.spec
@@ -0,0 +1,13 @@
+#
+# An artificial TSIG RDATA for toWire test.
+#
+[custom]
+sections: tsig:name
+[tsig]
+algorithm: hmac-md5
+time_signed: 1286779327
+mac_size: 0
+original_id: 16020
+error: 17
+[name]
+name: ptr=2
diff --git a/src/lib/dns/tests/testdata/rdata_tsig_toWire5.wire b/src/lib/dns/tests/testdata/rdata_tsig_toWire5.wire
new file mode 100644
index 0000000..bc83de6
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_tsig_toWire5.wire
@@ -0,0 +1,17 @@
+###
+### This data file was auto-generated from rdata_tsig_toWire5.spec
+###
+
+# TSIG RDATA, RDLEN=42
+002a
+# Algorithm=hmac-md5 Time-Signed=1286779327 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004cb2b1bf 012c
+# MAC Size=0 MAC=(see hex)
+0000
+# Original-ID=16020 Error=17
+3e94 0011
+# Other-Len=0 Other-Data=(see hex)
+0000
+
+# DNS Name: ptr=2
+c002
diff --git a/src/lib/dns/tests/testdata/rdata_txt_fromWire1 b/src/lib/dns/tests/testdata/rdata_txt_fromWire1
new file mode 100644
index 0000000..547d76f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_txt_fromWire1
@@ -0,0 +1,9 @@
+#
+# various kinds of TXT RDATA stored in an input buffer
+#
+# Valid RDATA for "Test-String"
+#
+# RDLENGTH=12 bytes
+ 00 0c
+#    T  e  s  t  -  S  t  r  i  n  g
+ 0b 54 65 73 74 2d 53 74 72 69 6e 67
diff --git a/src/lib/dns/tests/testdata/rdata_txt_fromWire2.spec b/src/lib/dns/tests/testdata/rdata_txt_fromWire2.spec
new file mode 100644
index 0000000..c5829d9
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_txt_fromWire2.spec
@@ -0,0 +1,8 @@
+#
+# TXT RDATA with empty character-string.  unusual, but valid.
+#
+
+[custom]
+sections: txt
+[txt]
+string: ''
diff --git a/src/lib/dns/tests/testdata/rdata_txt_fromWire2.wire b/src/lib/dns/tests/testdata/rdata_txt_fromWire2.wire
new file mode 100644
index 0000000..83ebea3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_txt_fromWire2.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_txt_fromWire2.spec
+###
+
+# TXT RDATA, RDLEN=1
+0001
+# String Len=0, String=""
+00
diff --git a/src/lib/dns/tests/testdata/rdata_txt_fromWire3.spec b/src/lib/dns/tests/testdata/rdata_txt_fromWire3.spec
new file mode 100644
index 0000000..fe5c129
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_txt_fromWire3.spec
@@ -0,0 +1,8 @@
+#
+# TXT RDATA with multiple character-strings.
+#
+
+[custom]
+sections: txt
+[txt]
+nstring: 2
diff --git a/src/lib/dns/tests/testdata/rdata_txt_fromWire3.wire b/src/lib/dns/tests/testdata/rdata_txt_fromWire3.wire
new file mode 100644
index 0000000..42fdf76
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_txt_fromWire3.wire
@@ -0,0 +1,10 @@
+###
+### This data file was auto-generated from rdata_txt_fromWire3.spec
+###
+
+# TXT RDATA, RDLEN=24
+0018
+# String Len=11, String="Test-String"
+0b 546573742d537472696e67
+# String Len=11, String="Test-String"
+0b 546573742d537472696e67
diff --git a/src/lib/dns/tests/testdata/rdata_txt_fromWire4.spec b/src/lib/dns/tests/testdata/rdata_txt_fromWire4.spec
new file mode 100644
index 0000000..0e015d4
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_txt_fromWire4.spec
@@ -0,0 +1,9 @@
+#
+# Malformed TXT RDATA: RDLEN is 0
+#
+
+[custom]
+sections: txt
+[txt]
+rdlen: 0
+# following data is provided, but that doesn't matter.
diff --git a/src/lib/dns/tests/testdata/rdata_txt_fromWire4.wire b/src/lib/dns/tests/testdata/rdata_txt_fromWire4.wire
new file mode 100644
index 0000000..6ac73b8
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_txt_fromWire4.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_txt_fromWire4.spec
+###
+
+# TXT RDATA, RDLEN=0
+0000
+# String Len=11, String="Test-String"
+0b 546573742d537472696e67
diff --git a/src/lib/dns/tests/testdata/rdata_txt_fromWire5.spec b/src/lib/dns/tests/testdata/rdata_txt_fromWire5.spec
new file mode 100644
index 0000000..7710cdf
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_txt_fromWire5.spec
@@ -0,0 +1,9 @@
+#
+# Malformed TXT RDATA: character-string length is too large
+#
+
+[custom]
+sections: txt
+[txt]
+stringlen: 255
+string: 'too short'
diff --git a/src/lib/dns/tests/testdata/rdata_txt_fromWire5.wire b/src/lib/dns/tests/testdata/rdata_txt_fromWire5.wire
new file mode 100644
index 0000000..ea7a9cf
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_txt_fromWire5.wire
@@ -0,0 +1,8 @@
+###
+### This data file was auto-generated from rdata_txt_fromWire5.spec
+###
+
+# TXT RDATA, RDLEN=10
+000a
+# String Len=255, String="too short"
+ff 746f6f2073686f7274
diff --git a/src/lib/dns/tests/testdata/rdata_unknown_fromWire b/src/lib/dns/tests/testdata/rdata_unknown_fromWire
new file mode 100644
index 0000000..69ea8ff
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdata_unknown_fromWire
@@ -0,0 +1,13 @@
+#
+# various kinds of "unknown" RDATA stored in an input buffer
+#
+# 0  1  2  3  4  5 (bytes)
+ 00 04 a1 b2 c3 0d
+#
+# 0-length data
+# 6  7
+ 00 00
+#
+# short buffer (this can be tested only at the end of the buffer)
+# 8  9 10  1  2
+ 00 04 a1 b2 c3
diff --git a/src/lib/dns/tests/testdata/rdatafields1.spec b/src/lib/dns/tests/testdata/rdatafields1.spec
new file mode 100644
index 0000000..6e105fb
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdatafields1.spec
@@ -0,0 +1,10 @@
+#
+# A sequence of names that could be compressed (but not compressed)
+#
+
+[custom]
+sections: name/1:name/2
+[name/1]
+name: www.example.com
+[name/2]
+name: example.com
diff --git a/src/lib/dns/tests/testdata/rdatafields1.wire b/src/lib/dns/tests/testdata/rdatafields1.wire
new file mode 100644
index 0000000..42028c1
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdatafields1.wire
@@ -0,0 +1,9 @@
+###
+### This data file was auto-generated from rdatafields1.spec
+###
+
+# DNS Name: www.example.com
+03777777076578616d706c6503636f6d00
+
+# DNS Name: example.com
+076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdatafields2.spec b/src/lib/dns/tests/testdata/rdatafields2.spec
new file mode 100644
index 0000000..920dc95
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdatafields2.spec
@@ -0,0 +1,11 @@
+#
+# A sequence of names that can be compressed.
+#
+
+[custom]
+sections: name/1:name/2
+[name/1]
+name: www.example.com
+[name/2]
+name: ''
+pointer: 4
diff --git a/src/lib/dns/tests/testdata/rdatafields2.wire b/src/lib/dns/tests/testdata/rdatafields2.wire
new file mode 100644
index 0000000..cbb0ce0
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdatafields2.wire
@@ -0,0 +1,9 @@
+###
+### This data file was auto-generated from rdatafields2.spec
+###
+
+# DNS Name: www.example.com
+03777777076578616d706c6503636f6d00
+
+# DNS Name:  + compression pointer: 4
+c004
diff --git a/src/lib/dns/tests/testdata/rdatafields3.spec b/src/lib/dns/tests/testdata/rdatafields3.spec
new file mode 100644
index 0000000..b37fca3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdatafields3.spec
@@ -0,0 +1,11 @@
+#
+# TXT RDATA with multiple character-strings.
+#
+
+[custom]
+sections: txt
+[txt]
+nstring: 3
+string0: 'first string'
+string1: 'second string'
+string2: 'last string'
diff --git a/src/lib/dns/tests/testdata/rdatafields3.wire b/src/lib/dns/tests/testdata/rdatafields3.wire
new file mode 100644
index 0000000..3ff32f1
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdatafields3.wire
@@ -0,0 +1,12 @@
+###
+### This data file was auto-generated from rdatafields3.spec
+###
+
+# TXT RDATA, RDLEN=39
+0027
+# String Len=12, String="first string"
+0c 666972737420737472696e67
+# String Len=13, String="second string"
+0d 7365636f6e6420737472696e67
+# String Len=11, String="last string"
+0b 6c61737420737472696e67
diff --git a/src/lib/dns/tests/testdata/rdatafields4.spec b/src/lib/dns/tests/testdata/rdatafields4.spec
new file mode 100644
index 0000000..24b59aa
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdatafields4.spec
@@ -0,0 +1,7 @@
+#
+# Simple form of RRSIG (all fields use the default of generator script)
+#
+
+[custom]
+sections: rrsig
+[rrsig]
diff --git a/src/lib/dns/tests/testdata/rdatafields4.wire b/src/lib/dns/tests/testdata/rdatafields4.wire
new file mode 100644
index 0000000..e574426
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdatafields4.wire
@@ -0,0 +1,12 @@
+###
+### This data file was auto-generated from rdatafields4.spec
+###
+
+# RRSIG RDATA, RDLEN=46
+002e
+# Covered=A(1) Algorithm=RSASHA1(5) Labels=2 OrigTTL=3600
+0001 05 02 00000e10
+# Expiration=1264935600, Inception=1262343600
+4b6562b0 4b3dd5b0
+# Tag=4149 Signer=example.com and Signature
+1035 076578616d706c6503636f6d00 123456789abcdef123456789abcdef
diff --git a/src/lib/dns/tests/testdata/rdatafields5.spec b/src/lib/dns/tests/testdata/rdatafields5.spec
new file mode 100644
index 0000000..2c78282
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdatafields5.spec
@@ -0,0 +1,12 @@
+#
+# Names and RDATA (RRSIG) with an incompressible name.  All names are
+# rendered without compression.
+#
+
+[custom]
+sections: name/1:rrsig:name/2
+[name/1]
+name: com
+[rrsig]
+[name/2]
+name: www.example.com
diff --git a/src/lib/dns/tests/testdata/rdatafields5.wire b/src/lib/dns/tests/testdata/rdatafields5.wire
new file mode 100644
index 0000000..d0cebc9
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdatafields5.wire
@@ -0,0 +1,18 @@
+###
+### This data file was auto-generated from rdatafields5.spec
+###
+
+# DNS Name: com
+03636f6d00
+
+# RRSIG RDATA, RDLEN=46
+002e
+# Covered=A(1) Algorithm=RSASHA1(5) Labels=2 OrigTTL=3600
+0001 05 02 00000e10
+# Expiration=1264935600, Inception=1262343600
+4b6562b0 4b3dd5b0
+# Tag=4149 Signer=example.com and Signature
+1035 076578616d706c6503636f6d00 123456789abcdef123456789abcdef
+
+# DNS Name: www.example.com
+03777777076578616d706c6503636f6d00
diff --git a/src/lib/dns/tests/testdata/rdatafields6.spec b/src/lib/dns/tests/testdata/rdatafields6.spec
new file mode 100644
index 0000000..f9f0da1
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdatafields6.spec
@@ -0,0 +1,13 @@
+#
+# Names and RDATA (RRSIG) with an incompressible name.  The name in RRSIG
+# isn't compressed, but it's used as the compression target.
+#
+
+[custom]
+sections: name/1:rrsig:name/2
+[name/1]
+name: com
+[rrsig]
+[name/2]
+name: www
+pointer: 25
diff --git a/src/lib/dns/tests/testdata/rdatafields6.wire b/src/lib/dns/tests/testdata/rdatafields6.wire
new file mode 100644
index 0000000..0e8b3d9
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rdatafields6.wire
@@ -0,0 +1,18 @@
+###
+### This data file was auto-generated from rdatafields6.spec
+###
+
+# DNS Name: com
+03636f6d00
+
+# RRSIG RDATA, RDLEN=46
+002e
+# Covered=A(1) Algorithm=RSASHA1(5) Labels=2 OrigTTL=3600
+0001 05 02 00000e10
+# Expiration=1264935600, Inception=1262343600
+4b6562b0 4b3dd5b0
+# Tag=4149 Signer=example.com and Signature
+1035 076578616d706c6503636f6d00 123456789abcdef123456789abcdef
+
+# DNS Name: www + compression pointer: 25
+03777777c019
diff --git a/src/lib/dns/tests/testdata/rrcode16_fromWire1 b/src/lib/dns/tests/testdata/rrcode16_fromWire1
new file mode 100644
index 0000000..df2a177
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rrcode16_fromWire1
@@ -0,0 +1,4 @@
+#
+# a 16 bit wire-format data (network byte order)
+#
+1234
diff --git a/src/lib/dns/tests/testdata/rrcode16_fromWire2 b/src/lib/dns/tests/testdata/rrcode16_fromWire2
new file mode 100644
index 0000000..fec2dd0
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rrcode16_fromWire2
@@ -0,0 +1,4 @@
+#
+# an incomplete segment for a 16 bit wire-format data
+#
+12
diff --git a/src/lib/dns/tests/testdata/rrcode32_fromWire1 b/src/lib/dns/tests/testdata/rrcode32_fromWire1
new file mode 100644
index 0000000..fb2818f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rrcode32_fromWire1
@@ -0,0 +1,4 @@
+#
+# a 32 bit wire-format data (network byte order)
+#
+12345678
diff --git a/src/lib/dns/tests/testdata/rrcode32_fromWire2 b/src/lib/dns/tests/testdata/rrcode32_fromWire2
new file mode 100644
index 0000000..504d9d2
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rrcode32_fromWire2
@@ -0,0 +1,4 @@
+#
+# an incomplete segment for a 32 bit wire-format data
+#
+123456
diff --git a/src/lib/dns/tests/testdata/rrset_toWire1 b/src/lib/dns/tests/testdata/rrset_toWire1
new file mode 100644
index 0000000..8f81a0e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rrset_toWire1
@@ -0,0 +1,23 @@
+#
+# Rendering an IN/A RRset containing 2 RRs:
+# test.example.com. 3600 IN A 192.0.2.1
+# test.example.com. 3600 IN A 192.0.2.2
+#
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+# type/class: A = 1, IN = 1
+00 01 00 01
+# TTL: 3600
+00 00 0e 10
+#6  7
+# RDLENGTH: 4
+00 04
+# RDATA: 192.0.2.1
+c0 00 02 01
+#
+# 2nd RR: mostly the same except the RDATA
+04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+00 01 00 01
+00 00 0e 10
+00 04
+c0 00 02 02
diff --git a/src/lib/dns/tests/testdata/rrset_toWire2 b/src/lib/dns/tests/testdata/rrset_toWire2
new file mode 100644
index 0000000..ca6483f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rrset_toWire2
@@ -0,0 +1,38 @@
+#
+# Rendering an IN/A RRset and NS RRset as follows:
+# test.example.com. 3600 IN A 192.0.2.1
+# test.example.com. 3600 IN A 192.0.2.2
+# example.com. 1D IN NS ns.example.com.
+# Names will be compressed when possible.
+#
+# 0  1  2  3  4  5
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+# type/class: A = 1, IN = 1
+00 01 00 01
+# TTL: 3600
+00 00 0e 10
+#6  7
+# RDLENGTH: 4
+00 04
+# RDATA: 192.0.2.1
+c0 00 02 01
+#
+# 2nd RR: the owner name is compressed
+c0 00
+00 01 00 01
+00 00 0e 10
+00 04
+c0 00 02 02
+# 3rd RR: the owner name and NS name are compressed
+# pointing to the 5th octet of the owner name of the 1st RR
+c0 05
+# type/class: NS = 2, IN = 1
+00 02 00 01
+# TTL: 1D = 86400sec = 0x15180
+00 01 51 80
+# RDLENGTH: 5 octets
+00 05
+# NSDNAME: "ns." + compression pointer
+#(2) n  s
+ 02 6e 73 c0 05
diff --git a/src/lib/dns/tests/testdata/rrset_toWire3 b/src/lib/dns/tests/testdata/rrset_toWire3
new file mode 100644
index 0000000..47f8e6b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rrset_toWire3
@@ -0,0 +1,12 @@
+#
+# Rendering an empty IN/A RRset
+#
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+# type/class: A = 1, ANY = 255
+00 01 00 ff
+# TTL: 3600
+00 00 0e 10
+#6  7
+# RDLENGTH: 0
+00 00
diff --git a/src/lib/dns/tests/testdata/rrset_toWire4 b/src/lib/dns/tests/testdata/rrset_toWire4
new file mode 100644
index 0000000..6fb409c
--- /dev/null
+++ b/src/lib/dns/tests/testdata/rrset_toWire4
@@ -0,0 +1,12 @@
+#
+# Rendering an empty IN/A RRset
+#
+#(4) t  e  s  t (7) e  x  a  m  p  l  e (3) c  o  m  .
+ 04 74 65 73 74 07 65 78 61 6d 70 6c 65 03 63 6f 6d 00
+# type/class: A = 1, ANY = 255
+00 01 00 fe
+# TTL: 3600
+00 00 0e 10
+#6  7
+# RDLENGTH: 0
+00 00
diff --git a/src/lib/dns/tests/testdata/tsig_verify1.spec b/src/lib/dns/tests/testdata/tsig_verify1.spec
new file mode 100644
index 0000000..687013a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify1.spec
@@ -0,0 +1,19 @@
+#
+# An example of signed AXFR request
+#
+
+[custom]
+sections: header:question:tsig
+[header]
+id: 0x3410
+arcount: 1
+[question]
+rrtype: AXFR
+[tsig]
+as_rr: True
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8e951
+mac_size: 16
+mac: 0x35b2fd08268781634400c7c8a5533b13
+original_id: 0x3410
diff --git a/src/lib/dns/tests/testdata/tsig_verify1.wire b/src/lib/dns/tests/testdata/tsig_verify1.wire
new file mode 100644
index 0000000..b2d12f1
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify1.wire
@@ -0,0 +1,24 @@
+###
+### This data file was auto-generated from tsig_verify1.spec
+###
+
+# Header Section
+# ID=13328 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0)
+3410 0000
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=example.com. QTYPE=AXFR(252) QCLASS=IN(1)
+076578616d706c6503636f6d00 00fc 0001
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302915409 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8e951 012c
+# MAC Size=16 MAC=(see hex)
+0010 35b2fd08268781634400c7c8a5533b13
+# Original-ID=13328 Error=0
+3410 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/tsig_verify10.spec b/src/lib/dns/tests/testdata/tsig_verify10.spec
new file mode 100644
index 0000000..33ce83e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify10.spec
@@ -0,0 +1,22 @@
+#
+# A simple DNS query message with TSIG signed whose MAC is too short
+# (only 1 byte)
+#
+
+[custom]
+sections: header:question:tsig
+[header]
+id: 0x2d65
+rd: 1
+arcount: 1
+[question]
+name: www.example.com
+[tsig]
+as_rr: True
+# TSIG QNAME won't be compressed
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8877a
+mac_size: 1
+mac: 0x22
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/tsig_verify10.wire b/src/lib/dns/tests/testdata/tsig_verify10.wire
new file mode 100644
index 0000000..9ffe4ea
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify10.wire
@@ -0,0 +1,24 @@
+###
+### This data file was auto-generated from tsig_verify10.spec
+###
+
+# Header Section
+# ID=11621 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+2d65 0100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=43)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 002b
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=1 MAC=(see hex)
+0001 22
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/tsig_verify11.spec b/src/lib/dns/tests/testdata/tsig_verify11.spec
new file mode 100644
index 0000000..9927b48
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify11.spec
@@ -0,0 +1,24 @@
+#
+# A simple DNS query message with TSIG signed with truncated MAC
+# using common HMAC-SHA512-256
+#
+
+[custom]
+sections: header:question:tsig
+[header]
+id: 0x2d65
+rd: 1
+arcount: 1
+[question]
+name: www.example.com
+[tsig]
+as_rr: True
+# TSIG QNAME won't be compressed
+rr_name: www.example.com
+algorithm: hmac-sha512
+time_signed: 0x4da8877a
+#mac_size: 64
+mac_size: 32
+#mac: 0xc4bc4053572d62dd1b26998111565c18056be773dedc6ecea60dff31db2f25966e5d9bafbaaed56efbd5ee2d7e2a12ede4caad630ddf69846c980409724da34e
+mac: 0xc4bc4053572d62dd1b26998111565c18056be773dedc6ecea60dff31db2f2596
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/tsig_verify11.wire b/src/lib/dns/tests/testdata/tsig_verify11.wire
new file mode 100644
index 0000000..f0a8f4f
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify11.wire
@@ -0,0 +1,24 @@
+###
+### This data file was auto-generated from tsig_verify11.spec
+###
+
+# Header Section
+# ID=11621 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+2d65 0100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=61)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003d
+# Algorithm=hmac-sha512 Time-Signed=1302890362 Fudge=300
+0b686d61632d73686135313200 00004da8877a 012c
+# MAC Size=32 MAC=(see hex)
+0020 c4bc4053572d62dd1b26998111565c18056be773dedc6ecea60dff31db2f2596
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/tsig_verify2.spec b/src/lib/dns/tests/testdata/tsig_verify2.spec
new file mode 100644
index 0000000..ff98ca3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify2.spec
@@ -0,0 +1,32 @@
+#
+# An example of signed AXFR response
+#
+
+[custom]
+sections: header:question:soa:tsig
+[header]
+id: 0x3410
+aa: 1
+qr: 1
+ancount: 1
+arcount: 1
+[question]
+rrtype: AXFR
+[soa]
+# note that names are compressed in this RR
+as_rr: True
+rr_name: ptr=12
+mname: ns.ptr=12
+rname: root.ptr=12
+serial: 2011041503
+refresh: 7200
+retry: 3600
+expire: 2592000
+[tsig]
+as_rr: True
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8e951
+mac_size: 16
+mac: 0xbdd612cd2c7f9e0648bd6dc23713e83c
+original_id: 0x3410
diff --git a/src/lib/dns/tests/testdata/tsig_verify2.wire b/src/lib/dns/tests/testdata/tsig_verify2.wire
new file mode 100644
index 0000000..65f5f89
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify2.wire
@@ -0,0 +1,31 @@
+###
+### This data file was auto-generated from tsig_verify2.spec
+###
+
+# Header Section
+# ID=13328 QR=Response Opcode=QUERY(0) Rcode=NOERROR(0) AA
+3410 8400
+# QDCNT=1, ANCNT=1, NSCNT=0, ARCNT=1
+0001 0001 0000 0001
+
+# Question Section
+# QNAME=example.com. QTYPE=AXFR(252) QCLASS=IN(1)
+076578616d706c6503636f6d00 00fc 0001
+
+# SOA RR (QNAME=ptr=12 Class=IN(1) TTL=86400, RDLEN=32)
+c00c 0006 0001 00015180 0020
+# NNAME=ns.ptr=12 RNAME=root.ptr=12
+026e73c00c 04726f6f74c00c
+# SERIAL(2011041503) REFRESH(7200) RETRY(3600) EXPIRE(2592000) MINIMUM(1200)
+77de0edf 00001c20 00000e10 00278d00 000004b0
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302915409 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8e951 012c
+# MAC Size=16 MAC=(see hex)
+0010 bdd612cd2c7f9e0648bd6dc23713e83c
+# Original-ID=13328 Error=0
+3410 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/tsig_verify3.spec b/src/lib/dns/tests/testdata/tsig_verify3.spec
new file mode 100644
index 0000000..7e2f797
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify3.spec
@@ -0,0 +1,26 @@
+#
+# An example of signed AXFR response (continued)
+#
+
+[custom]
+sections: header:ns:tsig
+[header]
+id: 0x3410
+aa: 1
+qr: 1
+qdcount: 0
+ancount: 1
+arcount: 1
+[ns]
+# note that names are compressed in this RR
+as_rr: True
+rr_name: example.com.
+nsname: ns.ptr=12
+[tsig]
+as_rr: True
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8e951
+mac_size: 16
+mac: 0x102458f7f62ddd7d638d746034130968
+original_id: 0x3410
diff --git a/src/lib/dns/tests/testdata/tsig_verify3.wire b/src/lib/dns/tests/testdata/tsig_verify3.wire
new file mode 100644
index 0000000..c479ac3
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify3.wire
@@ -0,0 +1,25 @@
+###
+### This data file was auto-generated from tsig_verify3.spec
+###
+
+# Header Section
+# ID=13328 QR=Response Opcode=QUERY(0) Rcode=NOERROR(0) AA
+3410 8400
+# QDCNT=0, ANCNT=1, NSCNT=0, ARCNT=1
+0000 0001 0000 0001
+
+# NS RR (QNAME=example.com. Class=IN(1) TTL=86400, RDLEN=5)
+076578616d706c6503636f6d00 0002 0001 00015180 0005
+# NS name=ns.ptr=12
+026e73c00c
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302915409 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8e951 012c
+# MAC Size=16 MAC=(see hex)
+0010 102458f7f62ddd7d638d746034130968
+# Original-ID=13328 Error=0
+3410 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/tsig_verify4.spec b/src/lib/dns/tests/testdata/tsig_verify4.spec
new file mode 100644
index 0000000..4ffbbcf
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify4.spec
@@ -0,0 +1,27 @@
+#
+# An example of signed DNS response with bogus MAC
+#
+
+[custom]
+sections: header:question:a:tsig
+[header]
+id: 0x2d65
+aa: 1
+qr: 1
+rd: 1
+ancount: 1
+arcount: 1
+[question]
+name: www.example.com
+[a]
+as_rr: True
+rr_name: ptr=12
+[tsig]
+as_rr: True
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8877a
+mac_size: 16
+# bogus MAC
+mac: 0xdeadbeefdeadbeefdeadbeefdeadbeef
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/tsig_verify4.wire b/src/lib/dns/tests/testdata/tsig_verify4.wire
new file mode 100644
index 0000000..de5e050
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify4.wire
@@ -0,0 +1,29 @@
+###
+### This data file was auto-generated from tsig_verify4.spec
+###
+
+# Header Section
+# ID=11621 QR=Response Opcode=QUERY(0) Rcode=NOERROR(0) AA RD
+2d65 8500
+# QDCNT=1, ANCNT=1, NSCNT=0, ARCNT=1
+0001 0001 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# A RR (QNAME=ptr=12 Class=IN(1) TTL=86400, RDLEN=4)
+c00c 0001 0001 00015180 0004
+# Address=192.0.2.1
+c0000201
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=16 MAC=(see hex)
+0010 deadbeefdeadbeefdeadbeefdeadbeef
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/tsig_verify5.spec b/src/lib/dns/tests/testdata/tsig_verify5.spec
new file mode 100644
index 0000000..a6cc643
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify5.spec
@@ -0,0 +1,26 @@
+#
+# An example of signed DNS response
+#
+
+[custom]
+sections: header:question:a:tsig
+[header]
+id: 0x2d65
+aa: 1
+qr: 1
+rd: 1
+ancount: 1
+arcount: 1
+[question]
+name: www.example.com
+[a]
+as_rr: True
+rr_name: ptr=12
+[tsig]
+as_rr: True
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8877a
+mac_size: 16
+mac: 0x8fcda66a7cd1a3b9948eb1869d384a9f
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/tsig_verify5.wire b/src/lib/dns/tests/testdata/tsig_verify5.wire
new file mode 100644
index 0000000..3cfb89b
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify5.wire
@@ -0,0 +1,29 @@
+###
+### This data file was auto-generated from tsig_verify5.spec
+###
+
+# Header Section
+# ID=11621 QR=Response Opcode=QUERY(0) Rcode=NOERROR(0) AA RD
+2d65 8500
+# QDCNT=1, ANCNT=1, NSCNT=0, ARCNT=1
+0001 0001 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# A RR (QNAME=ptr=12 Class=IN(1) TTL=86400, RDLEN=4)
+c00c 0001 0001 00015180 0004
+# Address=192.0.2.1
+c0000201
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=16 MAC=(see hex)
+0010 8fcda66a7cd1a3b9948eb1869d384a9f
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/tsig_verify6.spec b/src/lib/dns/tests/testdata/tsig_verify6.spec
new file mode 100644
index 0000000..32e0818
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify6.spec
@@ -0,0 +1,21 @@
+#
+# Forwarded DNS query message with TSIG signed (header ID != orig ID)
+#
+
+[custom]
+sections: header:question:tsig
+[header]
+id: 0x1035
+rd: 1
+arcount: 1
+[question]
+name: www.example.com
+[tsig]
+as_rr: True
+# TSIG QNAME won't be compressed
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8877a
+mac_size: 16
+mac: 0x227026ad297beee721ce6c6fff1e9ef3
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/tsig_verify6.wire b/src/lib/dns/tests/testdata/tsig_verify6.wire
new file mode 100644
index 0000000..9e3e5b4
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify6.wire
@@ -0,0 +1,24 @@
+###
+### This data file was auto-generated from tsig_verify6.spec
+###
+
+# Header Section
+# ID=4149 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+1035 0100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=16 MAC=(see hex)
+0010 227026ad297beee721ce6c6fff1e9ef3
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/tsig_verify7.spec b/src/lib/dns/tests/testdata/tsig_verify7.spec
new file mode 100644
index 0000000..377578e
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify7.spec
@@ -0,0 +1,21 @@
+#
+# DNS query message with TSIG that has empty MAC (invalidly)
+#
+
+[custom]
+sections: header:question:tsig
+[header]
+id: 0x2d65
+rd: 1
+arcount: 1
+[question]
+name: www.example.com
+[tsig]
+as_rr: True
+# TSIG QNAME won't be compressed
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8877a
+mac_size: 0
+mac: ''
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/tsig_verify7.wire b/src/lib/dns/tests/testdata/tsig_verify7.wire
new file mode 100644
index 0000000..4de7d24
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify7.wire
@@ -0,0 +1,24 @@
+###
+### This data file was auto-generated from tsig_verify7.spec
+###
+
+# Header Section
+# ID=11621 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+2d65 0100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=42)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 002a
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=0 MAC=(see hex)
+0000
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/tsig_verify8.spec b/src/lib/dns/tests/testdata/tsig_verify8.spec
new file mode 100644
index 0000000..5432d4a
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify8.spec
@@ -0,0 +1,23 @@
+#
+# DNS query message with TSIG that has empty MAC + BADKEY error
+#
+
+[custom]
+sections: header:question:tsig
+[header]
+id: 0x2d65
+rd: 1
+arcount: 1
+[question]
+name: www.example.com
+[tsig]
+as_rr: True
+# TSIG QNAME won't be compressed
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8877a
+mac_size: 0
+mac: ''
+# 17: BADKEY
+error: 17
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/tsig_verify8.wire b/src/lib/dns/tests/testdata/tsig_verify8.wire
new file mode 100644
index 0000000..50845eb
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify8.wire
@@ -0,0 +1,24 @@
+###
+### This data file was auto-generated from tsig_verify8.spec
+###
+
+# Header Section
+# ID=11621 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+2d65 0100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=42)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 002a
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=0 MAC=(see hex)
+0000
+# Original-ID=11621 Error=17
+2d65 0011
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/tsig_verify9.spec b/src/lib/dns/tests/testdata/tsig_verify9.spec
new file mode 100644
index 0000000..5888455
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify9.spec
@@ -0,0 +1,21 @@
+#
+# A simple DNS query message with TSIG signed, but TSIG key and algorithm
+# names have upper case characters (unusual)
+#
+
+[custom]
+sections: header:question:tsig
+[header]
+id: 0x2d65
+rd: 1
+arcount: 1
+[question]
+name: www.example.com
+[tsig]
+as_rr: True
+rr_name: WWW.EXAMPLE.COM
+algorithm: HMAC-MD5.SIG-ALG.REG.INT
+time_signed: 0x4da8877a
+mac_size: 16
+mac: 0x227026ad297beee721ce6c6fff1e9ef3
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/tsig_verify9.wire b/src/lib/dns/tests/testdata/tsig_verify9.wire
new file mode 100644
index 0000000..163fcee
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsig_verify9.wire
@@ -0,0 +1,24 @@
+###
+### This data file was auto-generated from tsig_verify9.spec
+###
+
+# Header Section
+# ID=11621 QR=Query Opcode=QUERY(0) Rcode=NOERROR(0) RD
+2d65 0100
+# QDCNT=1, ANCNT=0, NSCNT=0, ARCNT=1
+0001 0000 0000 0001
+
+# Question Section
+# QNAME=www.example.com QTYPE=A(1) QCLASS=IN(1)
+03777777076578616d706c6503636f6d00 0001 0001
+
+# TSIG RR (QNAME=WWW.EXAMPLE.COM Class=ANY(255) TTL=0, RDLEN=58)
+03575757074558414d504c4503434f4d00 00fa 00ff 00000000 003a
+# Algorithm=HMAC-MD5.SIG-ALG.REG.INT Time-Signed=1302890362 Fudge=300
+08484d41432d4d4435075349472d414c470352454703494e5400 00004da8877a 012c
+# MAC Size=16 MAC=(see hex)
+0010 227026ad297beee721ce6c6fff1e9ef3
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/tsigrecord_toWire1.spec b/src/lib/dns/tests/testdata/tsigrecord_toWire1.spec
new file mode 100644
index 0000000..a25dc46
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsigrecord_toWire1.spec
@@ -0,0 +1,16 @@
+#
+# A simple TSIG RR (some of the parameters are taken from a live example
+# and don't have a specific meaning)
+#
+
+[custom]
+sections: tsig
+[tsig]
+as_rr: True
+# TSIG QNAME won't be compressed
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8877a
+mac_size: 16
+mac: 0xdadadadadadadadadadadadadadadada
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/tsigrecord_toWire1.wire b/src/lib/dns/tests/testdata/tsigrecord_toWire1.wire
new file mode 100644
index 0000000..a125e3d
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsigrecord_toWire1.wire
@@ -0,0 +1,14 @@
+###
+### This data file was auto-generated from tsigrecord_toWire1.spec
+###
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=16 MAC=(see hex)
+0010 dadadadadadadadadadadadadadadada
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/testdata/tsigrecord_toWire2.spec b/src/lib/dns/tests/testdata/tsigrecord_toWire2.spec
new file mode 100644
index 0000000..f667e4c
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsigrecord_toWire2.spec
@@ -0,0 +1,19 @@
+#
+# TSIG RR after some names that could (unexpectedly) cause name compression
+#
+
+[custom]
+sections: name/1:name/2:tsig
+[name/1]
+name: hmac-md5.sig-alg.reg.int
+[name/2]
+name: foo.example.com
+[tsig]
+as_rr: True
+# TSIG QNAME won't be compressed
+rr_name: www.example.com
+algorithm: hmac-md5
+time_signed: 0x4da8877a
+mac_size: 16
+mac: 0xdadadadadadadadadadadadadadadada
+original_id: 0x2d65
diff --git a/src/lib/dns/tests/testdata/tsigrecord_toWire2.wire b/src/lib/dns/tests/testdata/tsigrecord_toWire2.wire
new file mode 100644
index 0000000..980e1f1
--- /dev/null
+++ b/src/lib/dns/tests/testdata/tsigrecord_toWire2.wire
@@ -0,0 +1,20 @@
+###
+### This data file was auto-generated from tsigrecord_toWire2.spec
+###
+
+# DNS Name: hmac-md5.sig-alg.reg.int
+08686d61632d6d6435077369672d616c670372656703696e7400
+
+# DNS Name: foo.example.com
+03666f6f076578616d706c6503636f6d00
+
+# TSIG RR (QNAME=www.example.com Class=ANY(255) TTL=0, RDLEN=58)
+03777777076578616d706c6503636f6d00 00fa 00ff 00000000 003a
+# Algorithm=hmac-md5 Time-Signed=1302890362 Fudge=300
+08686d61632d6d6435077369672d616c670372656703696e7400 00004da8877a 012c
+# MAC Size=16 MAC=(see hex)
+0010 dadadadadadadadadadadadadadadada
+# Original-ID=11621 Error=0
+2d65 0000
+# Other-Len=0 Other-Data=(see hex)
+0000
diff --git a/src/lib/dns/tests/tsig_unittest.cc b/src/lib/dns/tests/tsig_unittest.cc
new file mode 100644
index 0000000..fde67bc
--- /dev/null
+++ b/src/lib/dns/tests/tsig_unittest.cc
@@ -0,0 +1,1185 @@
+// Copyright (C) 2011-2023 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <time.h>
+#include <string>
+#include <stdexcept>
+#include <vector>
+
+#include <boost/scoped_ptr.hpp>
+
+#include <gtest/gtest.h>
+
+#include <exceptions/exceptions.h>
+
+#include <util/buffer.h>
+#include <util/encode/base64.h>
+#include <util/unittests/newhook.h>
+#include <util/time_utilities.h>
+
+#include <dns/message.h>
+#include <dns/messagerenderer.h>
+#include <dns/question.h>
+#include <dns/opcode.h>
+#include <dns/rcode.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+#include <dns/tsig.h>
+#include <dns/tsigkey.h>
+#include <dns/tsigrecord.h>
+
+#include <dns/tests/unittest_util.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+using namespace isc::util;
+using namespace isc::util::encode;
+using namespace isc::dns::rdata;
+using namespace isc::dns::rdata::any;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+// @note: blocks and SCOPED_TRACE can make buggy cppchecks raise
+// a spurious syntax error...
+
+// See dnssectime.cc
+namespace isc {
+namespace util {
+namespace detail {
+extern int64_t (*gettimeFunction)();
+}
+}
+}
+
+namespace {
+// See dnssectime_unittest.cc
+template <int64_t NOW>
+int64_t
+testGetTime() {
+    return (NOW);
+}
+
+// Thin wrapper around TSIGContext to allow access to the
+// update method.
+class TestTSIGContext : public TSIGContext {
+public:
+    TestTSIGContext(const TSIGKey& key) :
+        TSIGContext(key)
+    {}
+    TestTSIGContext(const Name& key_name, const Name& algorithm_name,
+                    const TSIGKeyRing& keyring) :
+        TSIGContext(key_name, algorithm_name, keyring)
+    {}
+    void update(const void* const data, size_t len) {
+        TSIGContext::update(data, len);
+    }
+};
+
+class TSIGTest : public ::testing::Test {
+protected:
+    TSIGTest() :
+        tsig_ctx(NULL), qid(0x2d65), test_name("www.example.com"),
+        badkey_name("badkey.example.com"), test_class(RRClass::IN()),
+        test_ttl(86400), message(Message::RENDER),
+        dummy_data(1024, 0xdd),  // should be sufficiently large for all tests
+        dummy_record(badkey_name, TSIG(TSIGKey::HMACMD5_NAME(), 0x4da8877a,
+                                       TSIGContext::DEFAULT_FUDGE, 0, NULL, qid, 0, 0, NULL))
+    {
+        // Make sure we use the system time by default so that we won't be
+        // confused due to other tests that tweak the time.
+        isc::util::detail::gettimeFunction = NULL;
+
+        decodeBase64("SFuWd/q99SzF8Yzd1QbB9g==", secret);
+        tsig_ctx.reset(new TestTSIGContext(TSIGKey(test_name,
+                                                   TSIGKey::HMACMD5_NAME(),
+                                                   &secret[0],
+                                                   secret.size())));
+        tsig_verify_ctx.reset(new TSIGContext(TSIGKey(test_name,
+                                                      TSIGKey::HMACMD5_NAME(),
+                                                      &secret[0],
+                                                      secret.size())));
+    }
+    ~TSIGTest() {
+        isc::util::detail::gettimeFunction = NULL;
+    }
+
+    // Many of the tests below create some DNS message and sign it under
+    // some specific TSIG context.  This helper method unifies the common
+    // logic with slightly different parameters.
+    ConstTSIGRecordPtr createMessageAndSign(uint16_t qid, const Name& qname,
+                                            TSIGContext* ctx,
+                                            unsigned int message_flags =
+                                            RD_FLAG,
+                                            RRType qtype = RRType::A(),
+                                            const char* answer_data = NULL,
+                                            const RRType* answer_type = NULL,
+                                            bool add_question = true,
+                                            Rcode rcode = Rcode::NOERROR());
+
+    void createMessageFromFile(const char* datafile);
+
+    // bit-wise constant flags to configure DNS header flags for test
+    // messages.
+    static const unsigned int QR_FLAG = 0x1;
+    static const unsigned int AA_FLAG = 0x2;
+    static const unsigned int RD_FLAG = 0x4;
+
+    boost::scoped_ptr<TestTSIGContext> tsig_ctx;
+    boost::scoped_ptr<TSIGContext> tsig_verify_ctx;
+    TSIGKeyRing keyring;
+    const uint16_t qid;
+    const Name test_name;
+    const Name badkey_name;
+    const RRClass test_class;
+    const RRTTL test_ttl;
+    Message message;
+    MessageRenderer renderer;
+    vector<uint8_t> secret;
+    vector<uint8_t> dummy_data;
+    const TSIGRecord dummy_record;
+    vector<uint8_t> received_data;
+};
+
+ConstTSIGRecordPtr
+TSIGTest::createMessageAndSign(uint16_t id, const Name& qname,
+                               TSIGContext* ctx, unsigned int message_flags,
+                               RRType qtype, const char* answer_data,
+                               const RRType* answer_type, bool add_question,
+                               Rcode rcode)
+{
+    message.clear(Message::RENDER);
+    message.setQid(id);
+    message.setOpcode(Opcode::QUERY());
+    message.setRcode(rcode);
+    if ((message_flags & QR_FLAG) != 0) {
+        message.setHeaderFlag(Message::HEADERFLAG_QR);
+    }
+    if ((message_flags & AA_FLAG) != 0) {
+        message.setHeaderFlag(Message::HEADERFLAG_AA);
+    }
+    if ((message_flags & RD_FLAG) != 0) {
+        message.setHeaderFlag(Message::HEADERFLAG_RD);
+    }
+    if (add_question) {
+        message.addQuestion(Question(qname, test_class, qtype));
+    }
+    if (answer_data != NULL) {
+        if (answer_type == NULL) {
+            answer_type = &qtype;
+        }
+        RRsetPtr answer_rrset(new RRset(qname, test_class, *answer_type,
+                                        test_ttl));
+        answer_rrset->addRdata(createRdata(*answer_type, test_class,
+                                           answer_data));
+        message.addRRset(Message::SECTION_ANSWER, answer_rrset);
+    }
+    renderer.clear();
+
+    TSIGContext::State expected_new_state =
+        (ctx->getState() == TSIGContext::INIT) ?
+        TSIGContext::SENT_REQUEST : TSIGContext::SENT_RESPONSE;
+
+    message.toWire(renderer, ctx);
+
+    message.clear(Message::PARSE);
+    InputBuffer buffer(renderer.getData(), renderer.getLength());
+    message.fromWire(buffer);
+
+    EXPECT_EQ(expected_new_state, ctx->getState());
+
+    return (ConstTSIGRecordPtr(new TSIGRecord(*message.getTSIGRecord())));
+}
+
+void
+TSIGTest::createMessageFromFile(const char* datafile) {
+    message.clear(Message::PARSE);
+    received_data.clear();
+    UnitTestUtil::readWireData(datafile, received_data);
+    InputBuffer buffer(&received_data[0], received_data.size());
+    message.fromWire(buffer);
+}
+
+void
+commonSignChecks(ConstTSIGRecordPtr tsig, uint16_t expected_qid,
+                 uint64_t expected_timesigned,
+                 const uint8_t* expected_mac, size_t expected_maclen,
+                 uint16_t expected_error = 0,
+                 uint16_t expected_otherlen = 0,
+                 const uint8_t* expected_otherdata = NULL,
+                 const Name& expected_algorithm = TSIGKey::HMACMD5_NAME())
+{
+    ASSERT_TRUE(tsig != NULL);
+    const TSIG& tsig_rdata = tsig->getRdata();
+
+    EXPECT_EQ(expected_algorithm, tsig_rdata.getAlgorithm());
+    EXPECT_EQ(expected_timesigned, tsig_rdata.getTimeSigned());
+    EXPECT_EQ(300, tsig_rdata.getFudge());
+    EXPECT_EQ(expected_maclen, tsig_rdata.getMACSize());
+    matchWireData(expected_mac, expected_maclen,
+                  tsig_rdata.getMAC(), tsig_rdata.getMACSize());
+
+    EXPECT_EQ(expected_qid, tsig_rdata.getOriginalID());
+    EXPECT_EQ(expected_error, tsig_rdata.getError());
+    EXPECT_EQ(expected_otherlen, tsig_rdata.getOtherLen());
+    matchWireData(expected_otherdata, expected_otherlen,
+                  tsig_rdata.getOtherData(), tsig_rdata.getOtherLen());
+}
+
+void
+commonVerifyChecks(TSIGContext& ctx, const TSIGRecord* record,
+                   const void* data, size_t data_len, TSIGError expected_error,
+                   TSIGContext::State expected_new_state =
+                   TSIGContext::VERIFIED_RESPONSE,
+                   bool last_should_throw = false)
+{
+    EXPECT_EQ(expected_error, ctx.verify(record, data, data_len));
+    EXPECT_EQ(expected_error, ctx.getError());
+    EXPECT_EQ(expected_new_state, ctx.getState());
+    if (last_should_throw) {
+        EXPECT_THROW(ctx.lastHadSignature(), TSIGContextError);
+    } else {
+        EXPECT_EQ(record != NULL, ctx.lastHadSignature());
+    }
+}
+
+TEST_F(TSIGTest, initialState) {
+    // Until signing or verifying, the state should be INIT
+    EXPECT_EQ(TSIGContext::INIT, tsig_ctx->getState());
+
+    // And there should be no error code.
+    EXPECT_EQ(TSIGError(Rcode::NOERROR()), tsig_ctx->getError());
+
+    // Nothing verified yet
+    EXPECT_THROW(tsig_ctx->lastHadSignature(), TSIGContextError);
+}
+
+TEST_F(TSIGTest, constructFromKeyRing) {
+    // Construct a TSIG context with an empty key ring.  Key shouldn't be
+    // found, and the BAD_KEY error should be recorded.
+    TSIGContext ctx1(test_name, TSIGKey::HMACMD5_NAME(), keyring);
+    EXPECT_EQ(TSIGContext::INIT, ctx1.getState());
+    EXPECT_EQ(TSIGError::BAD_KEY(), ctx1.getError());
+
+    // Add a matching key (we don't use the secret so leave it empty), and
+    // construct it again.  This time it should be constructed with a valid
+    // key.
+    keyring.add(TSIGKey(test_name, TSIGKey::HMACMD5_NAME(), NULL, 0));
+    TSIGContext ctx2(test_name, TSIGKey::HMACMD5_NAME(), keyring);
+    EXPECT_EQ(TSIGContext::INIT, ctx2.getState());
+    EXPECT_EQ(TSIGError::NOERROR(), ctx2.getError());
+
+    // Similar to the first case except that the key ring isn't empty but
+    // it doesn't contain a matching key.
+    TSIGContext ctx3(test_name, TSIGKey::HMACSHA1_NAME(), keyring);
+    EXPECT_EQ(TSIGContext::INIT, ctx3.getState());
+    EXPECT_EQ(TSIGError::BAD_KEY(), ctx3.getError());
+
+    TSIGContext ctx4(Name("different-key.example"), TSIGKey::HMACMD5_NAME(),
+                     keyring);
+    EXPECT_EQ(TSIGContext::INIT, ctx4.getState());
+    EXPECT_EQ(TSIGError::BAD_KEY(), ctx4.getError());
+
+    // "Unknown" algorithm name will result in BADKEY, too.
+    TSIGContext ctx5(test_name, Name("unknown.algorithm"), keyring);
+    EXPECT_EQ(TSIGContext::INIT, ctx5.getState());
+    EXPECT_EQ(TSIGError::BAD_KEY(), ctx5.getError());
+}
+
+// Example output generated by
+// "dig -y www.example.com:SFuWd/q99SzF8Yzd1QbB9g== www.example.com
+// QID: 0x2d65
+// Time Signed: 0x00004da8877a
+// MAC: 227026ad297beee721ce6c6fff1e9ef3
+const uint8_t common_expected_mac[] = {
+    0x22, 0x70, 0x26, 0xad, 0x29, 0x7b, 0xee, 0xe7,
+    0x21, 0xce, 0x6c, 0x6f, 0xff, 0x1e, 0x9e, 0xf3
+};
+TEST_F(TSIGTest, sign) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+
+    {
+        SCOPED_TRACE("Sign test for query");
+        commonSignChecks(createMessageAndSign(qid, test_name, tsig_ctx.get()),
+                         qid, 0x4da8877a, common_expected_mac,
+                         sizeof(common_expected_mac));
+    }
+}
+
+// Same test as sign, but specifying the key name with upper-case (i.e.
+// non canonical) characters.  The digest must be the same.  It should actually
+// be ensured at the level of TSIGKey, but we confirm that at this level, too.
+TEST_F(TSIGTest, signUsingUpperCasedKeyName) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+
+    TSIGContext cap_ctx(TSIGKey(Name("WWW.EXAMPLE.COM"),
+                                TSIGKey::HMACMD5_NAME(),
+                                &secret[0], secret.size()));
+
+    {
+        SCOPED_TRACE("Sign test for query using non canonical key name");
+        commonSignChecks(createMessageAndSign(qid, test_name, &cap_ctx), qid,
+                         0x4da8877a, common_expected_mac,
+                         sizeof(common_expected_mac));
+    }
+}
+
+// Same as the previous test, but for the algorithm name.
+TEST_F(TSIGTest, signUsingUpperCasedAlgorithmName) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+
+    TSIGContext cap_ctx(TSIGKey(test_name,
+                                Name("HMAC-md5.SIG-alg.REG.int"),
+                                &secret[0], secret.size()));
+
+    {
+        SCOPED_TRACE("Sign test for query using non canonical algorithm name");
+        commonSignChecks(createMessageAndSign(qid, test_name, &cap_ctx), qid,
+                         0x4da8877a, common_expected_mac,
+                         sizeof(common_expected_mac));
+    }
+}
+
+TEST_F(TSIGTest, signAtActualTime) {
+    // Sign the message using the actual time, and check the accuracy of it.
+    // We cannot reasonably predict the expected MAC, so don't bother to
+    // check it.
+    const uint64_t now = static_cast<uint64_t>(time(NULL));
+
+    {
+        SCOPED_TRACE("Sign test for query at actual time");
+        ConstTSIGRecordPtr tsig = createMessageAndSign(qid, test_name,
+                                                       tsig_ctx.get());
+        const TSIG& tsig_rdata = tsig->getRdata();
+
+        // Check the resulted time signed is in the range of [now, now + 5]
+        // (5 is an arbitrary choice).  Note that due to the order of the call
+        // to time() and sign(), time signed must not be smaller than the
+        // current time.
+        EXPECT_LE(now, tsig_rdata.getTimeSigned());
+        EXPECT_GE(now + 5, tsig_rdata.getTimeSigned());
+    }
+}
+
+TEST_F(TSIGTest, signBadData) {
+    // some specific bad data should be rejected proactively.
+    const unsigned char dummy_data = 0;
+    EXPECT_THROW(tsig_ctx->sign(0, NULL, 10), InvalidParameter);
+    EXPECT_THROW(tsig_ctx->sign(0, &dummy_data, 0), InvalidParameter);
+}
+
+TEST_F(TSIGTest, verifyBadData) {
+    // the data must at least hold the DNS message header and the specified
+    // TSIG.
+    EXPECT_THROW(tsig_ctx->verify(&dummy_record, &dummy_data[0],
+                                  12 + dummy_record.getLength() - 1),
+                 InvalidParameter);
+
+    // Still nothing verified
+    EXPECT_THROW(tsig_ctx->lastHadSignature(), TSIGContextError);
+
+    // And the data must not be NULL.
+    EXPECT_THROW(tsig_ctx->verify(&dummy_record, NULL,
+                                  12 + dummy_record.getLength()),
+                 InvalidParameter);
+
+    // Still nothing verified
+    EXPECT_THROW(tsig_ctx->lastHadSignature(), TSIGContextError);
+
+}
+
+#ifdef ENABLE_CUSTOM_OPERATOR_NEW
+// We enable this test only when we enable custom new/delete at build time
+// We could enable/disable the test runtime using the gtest filter, but
+// we'd basically like to minimize the number of disabled tests (they
+// should generally be considered tests that temporarily fail and should
+// be fixed).
+TEST_F(TSIGTest, signExceptionSafety) {
+    // Check sign() provides the strong exception guarantee for the simpler
+    // case (with a key error and empty MAC).  The general case is more
+    // complicated and involves more memory allocation, so the test result
+    // won't be reliable.
+
+    commonVerifyChecks(*tsig_verify_ctx, &dummy_record, &dummy_data[0],
+                       dummy_data.size(), TSIGError::BAD_KEY(),
+                       TSIGContext::RECEIVED_REQUEST);
+
+    try {
+        int dummydata;
+        isc::util::unittests::force_throw_on_new = true;
+        isc::util::unittests::throw_size_on_new = sizeof(TSIGRecord);
+        tsig_verify_ctx->sign(0, &dummydata, sizeof(dummydata));
+        isc::util::unittests::force_throw_on_new = false;
+        ASSERT_FALSE(true) << "Expected throw on new, but it didn't happen";
+    } catch (const std::bad_alloc&) {
+        isc::util::unittests::force_throw_on_new = false;
+
+        // sign() threw, so the state should still be RECEIVED_REQUEST
+        EXPECT_EQ(TSIGContext::RECEIVED_REQUEST, tsig_verify_ctx->getState());
+    }
+    isc::util::unittests::force_throw_on_new = false;
+}
+#endif  // ENABLE_CUSTOM_OPERATOR_NEW
+
+// Same test as "sign" but use a different algorithm just to confirm we don't
+// naively hardcode constants specific to a particular algorithm.
+// Test data generated by
+// "dig -y hmac-sha1:www.example.com:MA+QDhXbyqUak+qnMFyTyEirzng= www.example.com"
+//   QID: 0x0967, RDflag
+//   Current Time: 00004da8be86
+//   Time Signed:  00004dae7d5f
+//   HMAC Size: 20
+//   HMAC: 415340c7daf824ed684ee586f7b5a67a2febc0d3
+TEST_F(TSIGTest, signUsingHMACSHA1) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4dae7d5f>;
+
+    secret.clear();
+    decodeBase64("MA+QDhXbyqUak+qnMFyTyEirzng=", secret);
+    TSIGContext sha1_ctx(TSIGKey(test_name, TSIGKey::HMACSHA1_NAME(),
+                                 &secret[0], secret.size()));
+
+    const uint16_t sha1_qid = 0x0967;
+    const uint8_t expected_mac[] = {
+        0x41, 0x53, 0x40, 0xc7, 0xda, 0xf8, 0x24, 0xed, 0x68, 0x4e,
+        0xe5, 0x86, 0xf7, 0xb5, 0xa6, 0x7a, 0x2f, 0xeb, 0xc0, 0xd3
+    };
+    {
+        SCOPED_TRACE("Sign test using HMAC-SHA1");
+        commonSignChecks(createMessageAndSign(sha1_qid, test_name, &sha1_ctx),
+                         sha1_qid, 0x4dae7d5f, expected_mac,
+                         sizeof(expected_mac), 0, 0, NULL,
+                         TSIGKey::HMACSHA1_NAME());
+    }
+}
+
+TEST_F(TSIGTest, signUsingHMACSHA224) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4dae7d5f>;
+
+    secret.clear();
+    decodeBase64("MA+QDhXbyqUak+qnMFyTyEirzng=", secret);
+    TSIGContext sha1_ctx(TSIGKey(test_name, TSIGKey::HMACSHA224_NAME(),
+                                 &secret[0], secret.size()));
+
+    const uint16_t sha1_qid = 0x0967;
+    const uint8_t expected_mac[] = {
+        0x3b, 0x93, 0xd3, 0xc5, 0xf9, 0x64, 0xb9, 0xc5, 0x00, 0x35, 
+        0x02, 0x69, 0x9f, 0xfc, 0x44, 0xd6, 0xe2, 0x66, 0xf4, 0x08, 
+        0xef, 0x33, 0xa2, 0xda, 0xa1, 0x48, 0x71, 0xd3
+    };
+    {
+        SCOPED_TRACE("Sign test using HMAC-SHA224");
+        commonSignChecks(createMessageAndSign(sha1_qid, test_name, &sha1_ctx),
+                         sha1_qid, 0x4dae7d5f, expected_mac,
+                         sizeof(expected_mac), 0, 0, NULL,
+                         TSIGKey::HMACSHA224_NAME());
+    }
+}
+
+// The first part of this test checks verifying the signed query used for
+// the "sign" test.
+// The second part of this test generates a signed response to the signed
+// query as follows:
+// Answer: www.example.com. 86400 IN A 192.0.2.1
+// MAC: 8fcda66a7cd1a3b9948eb1869d384a9f
+TEST_F(TSIGTest, verifyThenSignResponse) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+
+    // This test data for the message test has the same wire format data
+    // as the message used in the "sign" test.
+    createMessageFromFile("message_toWire2.wire");
+    {
+        SCOPED_TRACE("Verify test for request");
+        commonVerifyChecks(*tsig_verify_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::NOERROR(), TSIGContext::RECEIVED_REQUEST);
+    }
+
+    // Transform the original message to a response, then sign the response
+    // with the context of "verified state".
+    ConstTSIGRecordPtr tsig = createMessageAndSign(qid, test_name,
+                                                   tsig_verify_ctx.get(),
+                                                   QR_FLAG|AA_FLAG|RD_FLAG,
+                                                   RRType::A(), "192.0.2.1");
+    const uint8_t expected_mac[] = {
+        0x8f, 0xcd, 0xa6, 0x6a, 0x7c, 0xd1, 0xa3, 0xb9,
+        0x94, 0x8e, 0xb1, 0x86, 0x9d, 0x38, 0x4a, 0x9f
+    };
+    {
+        SCOPED_TRACE("Sign test for response");
+        commonSignChecks(tsig, qid, 0x4da8877a, expected_mac,
+                         sizeof(expected_mac));
+    }
+}
+
+TEST_F(TSIGTest, verifyUpperCaseNames) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+
+    // This test data for the message test has the same wire format data
+    // as the message used in the "sign" test.
+    createMessageFromFile("tsig_verify9.wire");
+    {
+        SCOPED_TRACE("Verify test for request");
+        commonVerifyChecks(*tsig_verify_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::NOERROR(), TSIGContext::RECEIVED_REQUEST);
+    }
+}
+
+TEST_F(TSIGTest, verifyForwardedMessage) {
+    // Similar to the first part of the previous test, but this test emulates
+    // the "forward" case, where the ID of the Header and the original ID in
+    // TSIG is different.
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+
+    createMessageFromFile("tsig_verify6.wire");
+    {
+        SCOPED_TRACE("Verify test for forwarded request");
+        commonVerifyChecks(*tsig_verify_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::NOERROR(), TSIGContext::RECEIVED_REQUEST);
+    }
+}
+
+// Example of signing multiple messages in a single TCP stream,
+// taken from data using BIND 9's "one-answer" transfer-format.
+// Request:
+//   QID: 0x3410, flags (none)
+//   Question: example.com/IN/AXFR
+//   Time Signed: 0x4da8e951
+//   MAC: 35b2fd08268781634400c7c8a5533b13
+// First message:
+//   QID: 0x3410, flags QR, AA
+//   Question: example.com/IN/AXFR
+//   Answer: example.com. 86400 IN SOA ns.example.com. root.example.com. (
+//                          2011041503 7200 3600 2592000 1200)
+//   MAC: bdd612cd2c7f9e0648bd6dc23713e83c
+// Second message:
+//   Answer: example.com. 86400 IN NS ns.example.com.
+//   MAC: 102458f7f62ddd7d638d746034130968
+TEST_F(TSIGTest, signContinuation) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8e951>;
+
+    const uint16_t axfr_qid = 0x3410;
+    const Name zone_name("example.com");
+
+    // Create and sign the AXFR request
+    ConstTSIGRecordPtr tsig = createMessageAndSign(axfr_qid, zone_name,
+                                                   tsig_ctx.get(), 0,
+                                                   RRType::AXFR());
+    // Then verify it (the wire format test data should contain the same
+    // message data, and verification should succeed).
+    received_data.clear();
+    UnitTestUtil::readWireData("tsig_verify1.wire", received_data);
+    {
+        SCOPED_TRACE("Verify AXFR query");
+        commonVerifyChecks(*tsig_verify_ctx, tsig.get(), &received_data[0],
+                           received_data.size(), TSIGError::NOERROR(),
+                           TSIGContext::RECEIVED_REQUEST);
+    }
+
+    // Create and sign the first response message
+    tsig = createMessageAndSign(axfr_qid, zone_name, tsig_verify_ctx.get(),
+                                AA_FLAG|QR_FLAG, RRType::AXFR(),
+                                "ns.example.com. root.example.com. "
+                                "2011041503 7200 3600 2592000 1200",
+                                &RRType::SOA());
+
+    // Then verify it at the requester side.
+    received_data.clear();
+    UnitTestUtil::readWireData("tsig_verify2.wire", received_data);
+    {
+        SCOPED_TRACE("Verify first AXFR response");
+        commonVerifyChecks(*tsig_ctx, tsig.get(), &received_data[0],
+                           received_data.size(), TSIGError::NOERROR());
+    }
+
+    // Create and sign the second response message
+    const uint8_t expected_mac[] = {
+        0x10, 0x24, 0x58, 0xf7, 0xf6, 0x2d, 0xdd, 0x7d,
+        0x63, 0x8d, 0x74, 0x60, 0x34, 0x13, 0x09, 0x68
+    };
+    {
+        SCOPED_TRACE("Sign test for continued response in TCP stream");
+        tsig = createMessageAndSign(axfr_qid, zone_name, tsig_verify_ctx.get(),
+                                    AA_FLAG|QR_FLAG, RRType::AXFR(),
+                                    "ns.example.com.", &RRType::NS(), false);
+        commonSignChecks(tsig, axfr_qid, 0x4da8e951, expected_mac,
+                         sizeof(expected_mac));
+    }
+
+    // Then verify it at the requester side.
+    received_data.clear();
+    UnitTestUtil::readWireData("tsig_verify3.wire", received_data);
+    {
+        SCOPED_TRACE("Verify second AXFR response");
+        commonVerifyChecks(*tsig_ctx, tsig.get(), &received_data[0],
+                           received_data.size(), TSIGError::NOERROR());
+    }
+}
+
+// BADTIME example, taken from data using specially hacked BIND 9's nsupdate
+// Query:
+//   QID: 0x1830, RD flag
+//   Current Time: 00004da8be86
+//   Time Signed:  00004da8b9d6
+//   Question: www.example.com/IN/SOA
+//(mac) 8406 7d50 b8e7 d054 3d50 5bd9 de2a bb68
+// Response:
+//   QRbit, RCODE=9(NOTAUTH)
+//   Time Signed: 00004da8b9d6 (the one in the query)
+//   MAC: d4b043f6f44495ec8a01260e39159d76
+//   Error: 0x12 (BADTIME), Other Len: 6
+//   Other data: 00004da8be86
+TEST_F(TSIGTest, badtimeResponse) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8b9d6>;
+
+    const uint16_t test_qid = 0x7fc4;
+    ConstTSIGRecordPtr tsig = createMessageAndSign(test_qid, test_name,
+                                                   tsig_ctx.get(), 0,
+                                                   RRType::SOA());
+
+    // "advance the clock" and try validating, which should fail due to BADTIME
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8be86>;
+    {
+        SCOPED_TRACE("Verify resulting in BADTIME due to expired SIG");
+        commonVerifyChecks(*tsig_verify_ctx, tsig.get(), &dummy_data[0],
+                           dummy_data.size(), TSIGError::BAD_TIME(),
+                           TSIGContext::RECEIVED_REQUEST);
+    }
+
+    // make and sign a response in the context of TSIG error.
+    tsig = createMessageAndSign(test_qid, test_name, tsig_verify_ctx.get(),
+                                QR_FLAG, RRType::SOA(), NULL, NULL,
+                                true, Rcode::NOTAUTH());
+    const uint8_t expected_otherdata[] = { 0, 0, 0x4d, 0xa8, 0xbe, 0x86 };
+    const uint8_t expected_mac[] = {
+        0xd4, 0xb0, 0x43, 0xf6, 0xf4, 0x44, 0x95, 0xec,
+        0x8a, 0x01, 0x26, 0x0e, 0x39, 0x15, 0x9d, 0x76
+    };
+    {
+        SCOPED_TRACE("Sign test for response with BADTIME");
+        commonSignChecks(tsig, message.getQid(), 0x4da8b9d6,
+                         expected_mac, sizeof(expected_mac),
+                         18,     // error: BADTIME
+                         sizeof(expected_otherdata),
+                         expected_otherdata);
+    }
+}
+
+TEST_F(TSIGTest, badtimeResponse2) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8b9d6>;
+
+    ConstTSIGRecordPtr tsig = createMessageAndSign(qid, test_name,
+                                                   tsig_ctx.get(), 0,
+                                                   RRType::SOA());
+
+    // "rewind the clock" and try validating, which should fail due to BADTIME
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8b9d6 - 600>;
+    {
+        SCOPED_TRACE("Verify resulting in BADTIME due to too future SIG");
+        commonVerifyChecks(*tsig_verify_ctx, tsig.get(), &dummy_data[0],
+                           dummy_data.size(), TSIGError::BAD_TIME(),
+                           TSIGContext::RECEIVED_REQUEST);
+    }
+}
+
+TEST_F(TSIGTest, badtimeBoundaries) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8b9d6>;
+
+    // Test various boundary conditions.  We intentionally use the magic
+    // number of 300 instead of the constant variable for testing.
+    // In the okay cases, signature is not correct, but it's sufficient to
+    // check the error code isn't BADTIME for the purpose of this test.
+    ConstTSIGRecordPtr tsig = createMessageAndSign(qid, test_name,
+                                                   tsig_ctx.get(), 0,
+                                                   RRType::SOA());
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8b9d6 + 301>;
+    EXPECT_EQ(TSIGError::BAD_TIME(),
+              tsig_verify_ctx->verify(tsig.get(), &dummy_data[0],
+                                      dummy_data.size()));
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8b9d6 + 300>;
+    EXPECT_NE(TSIGError::BAD_TIME(),
+              tsig_verify_ctx->verify(tsig.get(), &dummy_data[0],
+                                      dummy_data.size()));
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8b9d6 - 301>;
+    EXPECT_EQ(TSIGError::BAD_TIME(),
+              tsig_verify_ctx->verify(tsig.get(), &dummy_data[0],
+                                      dummy_data.size()));
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8b9d6 - 300>;
+    EXPECT_NE(TSIGError::BAD_TIME(),
+              tsig_verify_ctx->verify(tsig.get(), &dummy_data[0],
+                                      dummy_data.size()));
+}
+
+TEST_F(TSIGTest, badtimeOverflow) {
+    isc::util::detail::gettimeFunction = testGetTime<200>;
+    ConstTSIGRecordPtr tsig = createMessageAndSign(qid, test_name,
+                                                   tsig_ctx.get(), 0,
+                                                   RRType::SOA());
+
+    // This should be in the okay range, but since "200 - fudge" overflows
+    // and we compare them as 64-bit unsigned integers, it results in a false
+    // positive (we intentionally accept that).
+    isc::util::detail::gettimeFunction = testGetTime<100>;
+    EXPECT_EQ(TSIGError::BAD_TIME(),
+              tsig_verify_ctx->verify(tsig.get(), &dummy_data[0],
+                                      dummy_data.size()));
+}
+
+TEST_F(TSIGTest, badsigResponse) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+
+    // Try to sign a simple message with bogus secret.  It should fail
+    // with BADSIG.
+    createMessageFromFile("message_toWire2.wire");
+    TSIGContext bad_ctx(TSIGKey(test_name, TSIGKey::HMACMD5_NAME(),
+                                &dummy_data[0], dummy_data.size()));
+    {
+        SCOPED_TRACE("Verify resulting in BADSIG");
+        commonVerifyChecks(bad_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::BAD_SIG(), TSIGContext::RECEIVED_REQUEST);
+    }
+
+    // Sign the same message (which doesn't matter for this test) with the
+    // context of "checked state".
+    {
+        SCOPED_TRACE("Sign test for response with BADSIG error");
+        commonSignChecks(createMessageAndSign(qid, test_name, &bad_ctx),
+                         message.getQid(), 0x4da8877a, NULL, 0,
+                         16);   // 16: BADSIG
+    }
+}
+
+TEST_F(TSIGTest, badkeyResponse) {
+    // A similar test as badsigResponse but for BADKEY
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+    tsig_ctx.reset(new TestTSIGContext(badkey_name, TSIGKey::HMACMD5_NAME(),
+                                       keyring));
+    {
+        SCOPED_TRACE("Verify resulting in BADKEY");
+        commonVerifyChecks(*tsig_ctx, &dummy_record, &dummy_data[0],
+                           dummy_data.size(), TSIGError::BAD_KEY(),
+                           TSIGContext::RECEIVED_REQUEST);
+    }
+
+    {
+        SCOPED_TRACE("Sign test for response with BADKEY error");
+        ConstTSIGRecordPtr sig = createMessageAndSign(qid, test_name,
+                                                      tsig_ctx.get());
+        EXPECT_EQ(badkey_name, sig->getName());
+        commonSignChecks(sig, qid, 0x4da8877a, NULL, 0, 17);   // 17: BADKEY
+    }
+}
+
+TEST_F(TSIGTest, badkeyForResponse) {
+    // "BADKEY" case for a response to a signed message
+    createMessageAndSign(qid, test_name, tsig_ctx.get());
+    {
+        SCOPED_TRACE("Verify a response resulting in BADKEY");
+        commonVerifyChecks(*tsig_ctx, &dummy_record, &dummy_data[0],
+                           dummy_data.size(), TSIGError::BAD_KEY(),
+                           TSIGContext::SENT_REQUEST);
+    }
+
+    // A similar case with a different algorithm
+    const TSIGRecord dummy_record2(test_name, TSIG(TSIGKey::HMACSHA1_NAME(),
+                                                   0x4da8877a,
+                                                   TSIGContext::DEFAULT_FUDGE,
+                                                   0, NULL, qid, 0, 0, NULL));
+    {
+        SCOPED_TRACE("Verify a response resulting in BADKEY due to bad alg");
+        commonVerifyChecks(*tsig_ctx, &dummy_record2, &dummy_data[0],
+                           dummy_data.size(), TSIGError::BAD_KEY(),
+                           TSIGContext::SENT_REQUEST);
+    }
+}
+
+TEST_F(TSIGTest, badsigThenValidate) {
+    // According to RFC2845 4.6, if TSIG verification fails the client
+    // should discard that message and wait for another signed response.
+    // This test emulates that situation.
+
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+
+    createMessageAndSign(qid, test_name, tsig_ctx.get());
+
+    createMessageFromFile("tsig_verify4.wire");
+    {
+        SCOPED_TRACE("Verify a response that should fail due to BADSIG");
+        commonVerifyChecks(*tsig_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::BAD_SIG(), TSIGContext::SENT_REQUEST);
+    }
+
+    createMessageFromFile("tsig_verify5.wire");
+    {
+        SCOPED_TRACE("Verify a response after a BADSIG failure");
+        commonVerifyChecks(*tsig_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::NOERROR(),
+                           TSIGContext::VERIFIED_RESPONSE);
+    }
+}
+
+TEST_F(TSIGTest, nosigThenValidate) {
+    // Similar to the previous test, but the first response doesn't contain
+    // TSIG.
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+
+    createMessageAndSign(qid, test_name, tsig_ctx.get());
+
+    {
+        SCOPED_TRACE("Verify a response without TSIG that should exist");
+        commonVerifyChecks(*tsig_ctx, NULL, &dummy_data[0],
+                           dummy_data.size(), TSIGError::FORMERR(),
+                           TSIGContext::SENT_REQUEST, true);
+    }
+
+    createMessageFromFile("tsig_verify5.wire");
+    {
+        SCOPED_TRACE("Verify a response after a FORMERR failure");
+        commonVerifyChecks(*tsig_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::NOERROR(),
+                           TSIGContext::VERIFIED_RESPONSE);
+    }
+}
+
+TEST_F(TSIGTest, badtimeThenValidate) {
+    // Similar to the previous test, but the first response results in BADTIME.
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+
+    ConstTSIGRecordPtr tsig = createMessageAndSign(qid, test_name,
+                                                   tsig_ctx.get());
+
+    // "advance the clock" and try validating, which should fail due to BADTIME
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a + 600>;
+    {
+        SCOPED_TRACE("Verify resulting in BADTIME due to expired SIG");
+        commonVerifyChecks(*tsig_ctx, tsig.get(), &dummy_data[0],
+                           dummy_data.size(), TSIGError::BAD_TIME(),
+                           TSIGContext::SENT_REQUEST);
+    }
+
+    // revert the clock again.
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+    createMessageFromFile("tsig_verify5.wire");
+    {
+        SCOPED_TRACE("Verify a response after a BADTIME failure");
+        commonVerifyChecks(*tsig_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::NOERROR(),
+                           TSIGContext::VERIFIED_RESPONSE);
+    }
+}
+
+TEST_F(TSIGTest, emptyMAC) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+
+    // We don't allow empty MAC unless the TSIG error is BADSIG or BADKEY.
+    createMessageFromFile("tsig_verify7.wire");
+    {
+        SCOPED_TRACE("Verify test for request");
+        commonVerifyChecks(*tsig_verify_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::BAD_SIG(), TSIGContext::RECEIVED_REQUEST);
+    }
+
+    // If the empty MAC comes with a BADKEY error, the error is passed
+    // transparently.
+    createMessageFromFile("tsig_verify8.wire");
+    {
+        SCOPED_TRACE("Verify test for request");
+        commonVerifyChecks(*tsig_verify_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::BAD_KEY(), TSIGContext::RECEIVED_REQUEST);
+    }
+}
+
+TEST_F(TSIGTest, verifyAfterSendResponse) {
+    // Once the context is used for sending a signed response, it shouldn't
+    // be used for further verification.
+
+    // The following are essentially the same as what verifyThenSignResponse
+    // does with simplification.
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+    createMessageFromFile("message_toWire2.wire");
+    tsig_verify_ctx->verify(message.getTSIGRecord(), &received_data[0],
+                            received_data.size());
+    EXPECT_EQ(TSIGContext::RECEIVED_REQUEST, tsig_verify_ctx->getState());
+    createMessageAndSign(qid, test_name, tsig_verify_ctx.get(),
+                         QR_FLAG|AA_FLAG|RD_FLAG, RRType::A(), "192.0.2.1");
+    EXPECT_EQ(TSIGContext::SENT_RESPONSE, tsig_verify_ctx->getState());
+
+    // Now trying further verification.
+    createMessageFromFile("message_toWire2.wire");
+    EXPECT_THROW(tsig_verify_ctx->verify(message.getTSIGRecord(),
+                                         &received_data[0],
+                                         received_data.size()),
+                 TSIGContextError);
+}
+
+TEST_F(TSIGTest, signAfterVerified) {
+    // Likewise, once the context verifies a response, it shouldn't for
+    // signing any more.
+
+    // The following are borrowed from badsigThenValidate (without the
+    // intermediate failure)
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+    createMessageAndSign(qid, test_name, tsig_ctx.get());
+    createMessageFromFile("tsig_verify5.wire");
+    tsig_ctx->verify(message.getTSIGRecord(), &received_data[0],
+                     received_data.size());
+    EXPECT_EQ(TSIGContext::VERIFIED_RESPONSE, tsig_ctx->getState());
+
+    // Now trying further signing.
+    EXPECT_THROW(createMessageAndSign(qid, test_name, tsig_ctx.get()),
+                 TSIGContextError);
+}
+
+TEST_F(TSIGTest, tooShortMAC) {
+    // Too short MAC should be rejected.
+
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+    createMessageFromFile("tsig_verify10.wire");
+    {
+        SCOPED_TRACE("Verify test for request");
+        commonVerifyChecks(*tsig_verify_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::FORMERR(), TSIGContext::RECEIVED_REQUEST);
+    }
+}
+
+TEST_F(TSIGTest, truncatedMAC) {
+    // Check truncated MAC support with HMAC-SHA512-256
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+
+    secret.clear();
+    decodeBase64("jI/Pa4qRu96t76Pns5Z/Ndxbn3QCkwcxLOgt9vgvnJw5wqTRvNyk3FtD6yIMd1dWVlqZ+Y4fe6Uasc0ckctEmg==", secret);
+    TSIGContext sha_ctx(TSIGKey(test_name, TSIGKey::HMACSHA512_NAME(),
+                                &secret[0], secret.size(), 256));
+
+    createMessageFromFile("tsig_verify11.wire");
+    {
+        SCOPED_TRACE("Verify test for request");
+        commonVerifyChecks(sha_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::NOERROR(), TSIGContext::RECEIVED_REQUEST);
+    }
+
+    // Try with HMAC-SHA512-264 (should fail)
+    TSIGContext bad_sha_ctx(TSIGKey(test_name, TSIGKey::HMACSHA512_NAME(),
+                                    &secret[0], secret.size(), 264));
+    {
+        SCOPED_TRACE("Verify test for request");
+        commonVerifyChecks(bad_sha_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::BAD_TRUNC(), TSIGContext::RECEIVED_REQUEST);
+    }
+}
+
+TEST_F(TSIGTest, getTSIGLength) {
+    // Check for the most common case with various algorithms
+    // See the comment in TSIGContext::getTSIGLength() for calculation and
+    // parameter notation.
+    // The key name (www.example.com) is the same for most cases, where n1=17
+
+    // hmac-md5.sig-alg.reg.int.: n2=26, x=16
+    EXPECT_EQ(85, tsig_ctx->getTSIGLength());
+
+    // hmac-md5-80: n2=26, x=10
+    tsig_ctx.reset(new TestTSIGContext(TSIGKey(test_name,
+                                               TSIGKey::HMACMD5_NAME(),
+                                               &dummy_data[0], 10, 80)));
+    EXPECT_EQ(79, tsig_ctx->getTSIGLength());
+
+    // hmac-sha1: n2=11, x=20
+    tsig_ctx.reset(new TestTSIGContext(TSIGKey(test_name,
+                                               TSIGKey::HMACSHA1_NAME(),
+                                               &dummy_data[0], 20)));
+    EXPECT_EQ(74, tsig_ctx->getTSIGLength());
+
+    // hmac-sha256: n2=13, x=32
+    tsig_ctx.reset(new TestTSIGContext(TSIGKey(test_name,
+                                               TSIGKey::HMACSHA256_NAME(),
+                                               &dummy_data[0], 32)));
+    EXPECT_EQ(88, tsig_ctx->getTSIGLength());
+
+    // hmac-sha224: n2=13, x=28
+    tsig_ctx.reset(new TestTSIGContext(TSIGKey(test_name,
+                                               TSIGKey::HMACSHA224_NAME(),
+                                               &dummy_data[0], 28)));
+    EXPECT_EQ(84, tsig_ctx->getTSIGLength());
+
+    // hmac-sha384: n2=13, x=48
+    tsig_ctx.reset(new TestTSIGContext(TSIGKey(test_name,
+                                               TSIGKey::HMACSHA384_NAME(),
+                                               &dummy_data[0], 48)));
+    EXPECT_EQ(104, tsig_ctx->getTSIGLength());
+
+    // hmac-sha512: n2=13, x=64
+    tsig_ctx.reset(new TestTSIGContext(TSIGKey(test_name,
+                                               TSIGKey::HMACSHA512_NAME(),
+                                               &dummy_data[0], 64)));
+    EXPECT_EQ(120, tsig_ctx->getTSIGLength());
+
+    // hmac-sha512-256: n2=13, x=32
+    tsig_ctx.reset(new TestTSIGContext(TSIGKey(test_name,
+                                               TSIGKey::HMACSHA512_NAME(),
+                                               &dummy_data[0], 32, 256)));
+    EXPECT_EQ(88, tsig_ctx->getTSIGLength());
+
+    // bad key case: n1=len(badkey.example.com)=20, n2=26, x=0
+    tsig_ctx.reset(new TestTSIGContext(badkey_name, TSIGKey::HMACMD5_NAME(),
+                                       keyring));
+    EXPECT_EQ(72, tsig_ctx->getTSIGLength());
+
+    // bad sig case: n1=17, n2=26, x=0
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+    createMessageFromFile("message_toWire2.wire");
+    tsig_ctx.reset(new TestTSIGContext(TSIGKey(test_name,
+                                               TSIGKey::HMACMD5_NAME(),
+                                               &dummy_data[0],
+                                               dummy_data.size())));
+    {
+        SCOPED_TRACE("Verify resulting in BADSIG");
+        commonVerifyChecks(*tsig_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::BAD_SIG(), TSIGContext::RECEIVED_REQUEST);
+    }
+    EXPECT_EQ(69, tsig_ctx->getTSIGLength());
+
+    // bad time case: n1=17, n2=26, x=16, y=6
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a - 1000>;
+    tsig_ctx.reset(new TestTSIGContext(TSIGKey(test_name,
+                                               TSIGKey::HMACMD5_NAME(),
+                                               &dummy_data[0],
+                                               dummy_data.size())));
+    {
+        SCOPED_TRACE("Verify resulting in BADTIME");
+        commonVerifyChecks(*tsig_ctx, message.getTSIGRecord(),
+                           &received_data[0], received_data.size(),
+                           TSIGError::BAD_TIME(),
+                           TSIGContext::RECEIVED_REQUEST);
+    }
+    EXPECT_EQ(91, tsig_ctx->getTSIGLength());
+}
+
+// Verify a stream of multiple messages. Some of them have a signature omitted.
+//
+// We have two contexts, one that signs, another that verifies.
+TEST_F(TSIGTest, verifyMulti) {
+    isc::util::detail::gettimeFunction = testGetTime<0x4da8877a>;
+
+    // First, send query from the verify one to the normal one, so
+    // we initialize something like AXFR
+    {
+        SCOPED_TRACE("Query");
+        ConstTSIGRecordPtr tsig = createMessageAndSign(1234, test_name,
+                                                       tsig_verify_ctx.get());
+        commonVerifyChecks(*tsig_ctx, tsig.get(),
+                           renderer.getData(), renderer.getLength(),
+                           TSIGError(Rcode::NOERROR()),
+                           TSIGContext::RECEIVED_REQUEST);
+    }
+
+    {
+        SCOPED_TRACE("First message");
+        ConstTSIGRecordPtr tsig = createMessageAndSign(1234, test_name,
+                                                       tsig_ctx.get());
+        commonVerifyChecks(*tsig_verify_ctx, tsig.get(),
+                           renderer.getData(), renderer.getLength(),
+                           TSIGError(Rcode::NOERROR()),
+                           TSIGContext::VERIFIED_RESPONSE);
+        EXPECT_TRUE(tsig_verify_ctx->lastHadSignature());
+    }
+
+    {
+        SCOPED_TRACE("Second message");
+        ConstTSIGRecordPtr tsig = createMessageAndSign(1234, test_name,
+                                                       tsig_ctx.get());
+        commonVerifyChecks(*tsig_verify_ctx, tsig.get(),
+                           renderer.getData(), renderer.getLength(),
+                           TSIGError(Rcode::NOERROR()),
+                           TSIGContext::VERIFIED_RESPONSE);
+        EXPECT_TRUE(tsig_verify_ctx->lastHadSignature());
+    }
+
+    {
+        SCOPED_TRACE("Third message. Unsigned.");
+        // Another message does not carry the TSIG on it. But it should
+        // be OK, it's in the middle of stream.
+        message.clear(Message::RENDER);
+        message.setQid(1234);
+        message.setOpcode(Opcode::QUERY());
+        message.setRcode(Rcode::NOERROR());
+        RRsetPtr answer_rrset(new RRset(test_name, test_class, RRType::A(),
+                                        test_ttl));
+        answer_rrset->addRdata(createRdata(RRType::A(), test_class,
+                                           "192.0.2.1"));
+        message.addRRset(Message::SECTION_ANSWER, answer_rrset);
+        message.toWire(renderer);
+        // Update the internal state. We abuse the knowledge of
+        // internals here a little bit to generate correct test data
+        tsig_ctx->update(renderer.getData(), renderer.getLength());
+
+        commonVerifyChecks(*tsig_verify_ctx, NULL,
+                           renderer.getData(), renderer.getLength(),
+                           TSIGError(Rcode::NOERROR()),
+                           TSIGContext::VERIFIED_RESPONSE);
+
+        EXPECT_FALSE(tsig_verify_ctx->lastHadSignature());
+    }
+
+    {
+        SCOPED_TRACE("Fourth message. Signed again.");
+        ConstTSIGRecordPtr tsig = createMessageAndSign(1234, test_name,
+                                                       tsig_ctx.get());
+        commonVerifyChecks(*tsig_verify_ctx, tsig.get(),
+                           renderer.getData(), renderer.getLength(),
+                           TSIGError(Rcode::NOERROR()),
+                           TSIGContext::VERIFIED_RESPONSE);
+        EXPECT_TRUE(tsig_verify_ctx->lastHadSignature());
+    }
+
+    {
+        SCOPED_TRACE("Filling in bunch of unsigned messages");
+        for (size_t i = 0; i < 100; ++i) {
+            SCOPED_TRACE(i);
+            // Another message does not carry the TSIG on it. But it should
+            // be OK, it's in the middle of stream.
+            message.clear(Message::RENDER);
+            message.setQid(1234);
+            message.setOpcode(Opcode::QUERY());
+            message.setRcode(Rcode::NOERROR());
+            RRsetPtr answer_rrset(new RRset(test_name, test_class, RRType::A(),
+                                            test_ttl));
+            answer_rrset->addRdata(createRdata(RRType::A(), test_class,
+                                               "192.0.2.1"));
+            message.addRRset(Message::SECTION_ANSWER, answer_rrset);
+            message.toWire(renderer);
+            // Update the internal state. We abuse the knowledge of
+            // internals here a little bit to generate correct test data
+            tsig_ctx->update(renderer.getData(), renderer.getLength());
+
+            // 99 unsigned messages is OK. But the 100th must be signed, according
+            // to the RFC2845, section 4.4
+            commonVerifyChecks(*tsig_verify_ctx, NULL,
+                               renderer.getData(), renderer.getLength(),
+                               i == 99 ? TSIGError::FORMERR() :
+                                   TSIGError(Rcode::NOERROR()),
+                               TSIGContext::VERIFIED_RESPONSE);
+
+            EXPECT_FALSE(tsig_verify_ctx->lastHadSignature());
+        }
+    }
+}
+
+} // end namespace
diff --git a/src/lib/dns/tests/tsigerror_unittest.cc b/src/lib/dns/tests/tsigerror_unittest.cc
new file mode 100644
index 0000000..e50f076
--- /dev/null
+++ b/src/lib/dns/tests/tsigerror_unittest.cc
@@ -0,0 +1,126 @@
+// Copyright (C) 2011-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <string>
+#include <ostream>
+
+#include <gtest/gtest.h>
+
+#include <exceptions/exceptions.h>
+
+#include <dns/rcode.h>
+#include <dns/tsigerror.h>
+
+using namespace std;
+using namespace isc;
+using namespace isc::dns;
+
+namespace {
+TEST(TSIGErrorTest, constructFromErrorCode) {
+    // These are pretty trivial, and also test getCode();
+    EXPECT_EQ(0, TSIGError(0).getCode());
+    EXPECT_EQ(18, TSIGError(18).getCode());
+    EXPECT_EQ(65535, TSIGError(65535).getCode());
+}
+
+TEST(TSIGErrorTest, constructFromRcode) {
+    // We use RCODE for code values from 0-15.
+    EXPECT_EQ(0, TSIGError(Rcode::NOERROR()).getCode());
+    EXPECT_EQ(15, TSIGError(Rcode(15)).getCode());
+
+    // From error code 16 TSIG errors define a separate space, so passing
+    // corresponding RCODE for such code values should be prohibited.
+    EXPECT_THROW(TSIGError(Rcode(16)).getCode(), OutOfRange);
+}
+
+TEST(TSIGErrorTest, constants) {
+    // We'll only test arbitrarily chosen subsets of the codes.
+    // This class is quite simple, so it should be suffice.
+
+    EXPECT_EQ(TSIGError::BAD_SIG_CODE, TSIGError(16).getCode());
+    EXPECT_EQ(TSIGError::BAD_KEY_CODE, TSIGError(17).getCode());
+    EXPECT_EQ(TSIGError::BAD_TIME_CODE, TSIGError(18).getCode());
+    EXPECT_EQ(TSIGError::BAD_MODE_CODE, TSIGError(19).getCode());
+    EXPECT_EQ(TSIGError::BAD_NAME_CODE, TSIGError(20).getCode());
+    EXPECT_EQ(TSIGError::BAD_ALG_CODE, TSIGError(21).getCode());
+    EXPECT_EQ(TSIGError::BAD_TRUNC_CODE, TSIGError(22).getCode());
+
+    EXPECT_EQ(0, TSIGError::NOERROR().getCode());
+    EXPECT_EQ(9, TSIGError::NOTAUTH().getCode());
+    EXPECT_EQ(14, TSIGError::RESERVED14().getCode());
+    EXPECT_EQ(TSIGError::BAD_SIG_CODE, TSIGError::BAD_SIG().getCode());
+    EXPECT_EQ(TSIGError::BAD_KEY_CODE, TSIGError::BAD_KEY().getCode());
+    EXPECT_EQ(TSIGError::BAD_TIME_CODE, TSIGError::BAD_TIME().getCode());
+    EXPECT_EQ(TSIGError::BAD_MODE_CODE, TSIGError::BAD_MODE().getCode());
+    EXPECT_EQ(TSIGError::BAD_NAME_CODE, TSIGError::BAD_NAME().getCode());
+    EXPECT_EQ(TSIGError::BAD_ALG_CODE, TSIGError::BAD_ALG().getCode());
+    EXPECT_EQ(TSIGError::BAD_TRUNC_CODE, TSIGError::BAD_TRUNC().getCode());
+}
+
+TEST(TSIGErrorTest, equal) {
+    EXPECT_TRUE(TSIGError::NOERROR() == TSIGError(Rcode::NOERROR()));
+    EXPECT_TRUE(TSIGError(Rcode::NOERROR()) == TSIGError::NOERROR());
+    EXPECT_TRUE(TSIGError::NOERROR().equals(TSIGError(Rcode::NOERROR())));
+    EXPECT_TRUE(TSIGError::NOERROR().equals(TSIGError(Rcode::NOERROR())));
+
+    EXPECT_TRUE(TSIGError::BAD_SIG() == TSIGError(16));
+    EXPECT_TRUE(TSIGError(16) == TSIGError::BAD_SIG());
+    EXPECT_TRUE(TSIGError::BAD_SIG().equals(TSIGError(16)));
+    EXPECT_TRUE(TSIGError(16).equals(TSIGError::BAD_SIG()));
+}
+
+TEST(TSIGErrorTest, nequal) {
+    EXPECT_TRUE(TSIGError::BAD_KEY() != TSIGError(Rcode::NOERROR()));
+    EXPECT_TRUE(TSIGError(Rcode::NOERROR()) != TSIGError::BAD_KEY());
+    EXPECT_TRUE(TSIGError::BAD_KEY().nequals(TSIGError(Rcode::NOERROR())));
+    EXPECT_TRUE(TSIGError(Rcode::NOERROR()).nequals(TSIGError::BAD_KEY()));
+}
+
+TEST(TSIGErrorTest, toText) {
+    // TSIGError derived from the standard Rcode
+    EXPECT_EQ("NOERROR", TSIGError(Rcode::NOERROR()).toText());
+
+    // Well known TSIG errors
+    EXPECT_EQ("BADSIG", TSIGError::BAD_SIG().toText());
+    EXPECT_EQ("BADKEY", TSIGError::BAD_KEY().toText());
+    EXPECT_EQ("BADTIME", TSIGError::BAD_TIME().toText());
+    EXPECT_EQ("BADMODE", TSIGError::BAD_MODE().toText());
+    EXPECT_EQ("BADNAME", TSIGError::BAD_NAME().toText());
+    EXPECT_EQ("BADALG", TSIGError::BAD_ALG().toText());
+    EXPECT_EQ("BADTRUNC", TSIGError::BAD_TRUNC().toText());
+
+    // Unknown (or not yet supported) codes.  Simply converted as numeric.
+    EXPECT_EQ("23", TSIGError(23).toText());
+    EXPECT_EQ("65535", TSIGError(65535).toText());
+}
+
+TEST(TSIGErrorTest, toRcode) {
+    // TSIGError derived from the standard Rcode
+    EXPECT_EQ(Rcode::NOERROR(), TSIGError(Rcode::NOERROR()).toRcode());
+
+    // Well known TSIG errors
+    EXPECT_EQ(Rcode::NOTAUTH(), TSIGError::BAD_SIG().toRcode());
+    EXPECT_EQ(Rcode::NOTAUTH(), TSIGError::BAD_KEY().toRcode());
+    EXPECT_EQ(Rcode::NOTAUTH(), TSIGError::BAD_TIME().toRcode());
+    EXPECT_EQ(Rcode::NOTAUTH(), TSIGError::BAD_MODE().toRcode());
+    EXPECT_EQ(Rcode::NOTAUTH(), TSIGError::BAD_NAME().toRcode());
+    EXPECT_EQ(Rcode::NOTAUTH(), TSIGError::BAD_ALG().toRcode());
+    EXPECT_EQ(Rcode::NOTAUTH(), TSIGError::BAD_TRUNC().toRcode());
+
+    // Unknown (or not yet supported) codes are treated as SERVFAIL.
+    EXPECT_EQ(Rcode::SERVFAIL(), TSIGError(23).toRcode());
+    EXPECT_EQ(Rcode::SERVFAIL(), TSIGError(65535).toRcode());
+}
+
+// test operator<<.  We simply confirm it appends the result of toText().
+TEST(TSIGErrorTest, LeftShiftOperator) {
+    ostringstream oss;
+    oss << TSIGError::BAD_KEY();
+    EXPECT_EQ(TSIGError::BAD_KEY().toText(), oss.str());
+}
+} // end namespace
diff --git a/src/lib/dns/tests/tsigkey_unittest.cc b/src/lib/dns/tests/tsigkey_unittest.cc
new file mode 100644
index 0000000..90c59ac
--- /dev/null
+++ b/src/lib/dns/tests/tsigkey_unittest.cc
@@ -0,0 +1,350 @@
+// Copyright (C) 2021-2019 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <string>
+
+#include <gtest/gtest.h>
+
+#include <exceptions/exceptions.h>
+
+#include <cryptolink/cryptolink.h>
+
+#include <dns/tsigkey.h>
+
+#include <dns/tests/unittest_util.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::dns;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class TSIGKeyTest : public ::testing::Test {
+protected:
+    TSIGKeyTest() : secret("someRandomData"), key_name("example.com") {}
+    string secret;
+    const Name key_name;
+};
+
+TEST_F(TSIGKeyTest, algorithmNames) {
+    EXPECT_EQ(Name("hmac-md5.sig-alg.reg.int"), TSIGKey::HMACMD5_NAME());
+    EXPECT_EQ(Name("hmac-md5"), TSIGKey::HMACMD5_SHORT_NAME());
+    EXPECT_EQ(Name("hmac-sha1"), TSIGKey::HMACSHA1_NAME());
+    EXPECT_EQ(Name("hmac-sha256"), TSIGKey::HMACSHA256_NAME());
+    EXPECT_EQ(Name("hmac-sha224"), TSIGKey::HMACSHA224_NAME());
+    EXPECT_EQ(Name("hmac-sha384"), TSIGKey::HMACSHA384_NAME());
+    EXPECT_EQ(Name("hmac-sha512"), TSIGKey::HMACSHA512_NAME());
+    EXPECT_EQ(Name("gss-tsig"), TSIGKey::GSSTSIG_NAME());
+
+    // Also check conversion to cryptolink definitions
+    EXPECT_EQ(isc::cryptolink::MD5, TSIGKey(key_name, TSIGKey::HMACMD5_NAME(),
+                                            NULL, 0).getAlgorithm());
+    EXPECT_EQ(isc::cryptolink::MD5,
+              TSIGKey(key_name, TSIGKey::HMACMD5_SHORT_NAME(),
+                      NULL, 0).getAlgorithm());
+    EXPECT_EQ(isc::cryptolink::SHA1, TSIGKey(key_name, TSIGKey::HMACSHA1_NAME(),
+                                             NULL, 0).getAlgorithm());
+    EXPECT_EQ(isc::cryptolink::SHA256, TSIGKey(key_name,
+                                               TSIGKey::HMACSHA256_NAME(),
+                                               NULL, 0).getAlgorithm());
+    EXPECT_EQ(isc::cryptolink::SHA224, TSIGKey(key_name,
+                                               TSIGKey::HMACSHA224_NAME(),
+                                               NULL, 0).getAlgorithm());
+    EXPECT_EQ(isc::cryptolink::SHA384, TSIGKey(key_name,
+                                               TSIGKey::HMACSHA384_NAME(),
+                                               NULL, 0).getAlgorithm());
+    EXPECT_EQ(isc::cryptolink::SHA512, TSIGKey(key_name,
+                                               TSIGKey::HMACSHA512_NAME(),
+                                               NULL, 0).getAlgorithm());
+}
+
+TEST_F(TSIGKeyTest, construct) {
+    TSIGKey key(key_name, TSIGKey::HMACMD5_NAME(),
+                secret.c_str(), secret.size());
+    EXPECT_EQ(key_name, key.getKeyName());
+    EXPECT_EQ(Name("hmac-md5.sig-alg.reg.int"), key.getAlgorithmName());
+    matchWireData(secret.c_str(), secret.size(),
+                  key.getSecret(), key.getSecretLength());
+
+    TSIGKey key_short_md5(key_name, TSIGKey::HMACMD5_SHORT_NAME(),
+                          secret.c_str(), secret.size());
+    EXPECT_EQ(key_name, key_short_md5.getKeyName());
+    EXPECT_EQ(Name("hmac-md5.sig-alg.reg.int"),
+              key_short_md5.getAlgorithmName());
+    matchWireData(secret.c_str(), secret.size(),
+                  key_short_md5.getSecret(), key_short_md5.getSecretLength());
+
+    // "unknown" algorithm is only accepted with empty secret.
+    EXPECT_THROW(TSIGKey(key_name, Name("unknown-alg"),
+                         secret.c_str(), secret.size()),
+                 isc::InvalidParameter);
+    TSIGKey key2(key_name, Name("unknown-alg"), NULL, 0);
+    EXPECT_EQ(key_name, key2.getKeyName());
+    EXPECT_EQ(Name("unknown-alg"), key2.getAlgorithmName());
+
+    // The algorithm name should be converted to the canonical form.
+    EXPECT_EQ("hmac-sha1.",
+              TSIGKey(key_name, Name("HMAC-sha1"),
+                      secret.c_str(),
+                      secret.size()).getAlgorithmName().toText());
+
+    // Same for key name
+    EXPECT_EQ("example.com.",
+              TSIGKey(Name("EXAMPLE.CoM."), TSIGKey::HMACSHA256_NAME(),
+                      secret.c_str(),
+                      secret.size()).getKeyName().toText());
+
+    // Check digestbits
+    EXPECT_EQ(key.getDigestbits(), 0);
+    TSIGKey key_trunc(key_name, TSIGKey::HMACMD5_NAME(),
+                      secret.c_str(), secret.size(), 120);
+    EXPECT_EQ(key_trunc.getDigestbits(), 120);
+
+    // Invalid combinations of secret and secret_len:
+    EXPECT_THROW(TSIGKey(key_name, TSIGKey::HMACSHA1_NAME(), secret.c_str(), 0),
+                 isc::InvalidParameter);
+    EXPECT_THROW(TSIGKey(key_name, TSIGKey::HMACSHA256_NAME(), NULL, 16),
+                 isc::InvalidParameter);
+
+    // Empty secret
+    TSIGKey keye = TSIGKey(key_name, TSIGKey::HMACSHA256_NAME(), NULL, 0);
+    EXPECT_EQ(keye.getSecretLength(), 0);
+    EXPECT_EQ(keye.getSecret(), (const void*)0);
+}
+
+void
+compareTSIGKeys(const TSIGKey& expect, const TSIGKey& actual) {
+    EXPECT_EQ(expect.getKeyName(), actual.getKeyName());
+    EXPECT_EQ(expect.getAlgorithmName(), actual.getAlgorithmName());
+    EXPECT_EQ(expect.getDigestbits(), actual.getDigestbits());
+    matchWireData(expect.getSecret(), expect.getSecretLength(),
+                  actual.getSecret(), actual.getSecretLength());
+}
+
+TEST_F(TSIGKeyTest, copyConstruct) {
+    const TSIGKey original(key_name, TSIGKey::HMACSHA256_NAME(),
+                           secret.c_str(), secret.size(), 128);
+    const TSIGKey copy(original);
+    compareTSIGKeys(original, copy);
+
+    // Check the copied data is valid even after the original is deleted
+    TSIGKey* copy2 = new TSIGKey(original);
+    TSIGKey copy3(*copy2);
+    delete copy2;
+    compareTSIGKeys(original, copy3);
+}
+
+TEST_F(TSIGKeyTest, assignment) {
+    const TSIGKey original(key_name, TSIGKey::HMACSHA256_NAME(),
+                           secret.c_str(), secret.size(), 200);
+    TSIGKey copy = original;
+    compareTSIGKeys(original, copy);
+
+    // Check if the copied data is valid even after the original is deleted
+    TSIGKey* copy2 = new TSIGKey(original);
+    TSIGKey copy3(original);
+    copy3 = *copy2;
+    delete copy2;
+    compareTSIGKeys(original, copy3);
+
+    // Self assignment
+    copy = *&copy;
+    compareTSIGKeys(original, copy);
+}
+
+class TSIGKeyRingTest : public ::testing::Test {
+protected:
+    TSIGKeyRingTest() :
+        key_name("example.com"),
+        md5_name("hmac-md5.sig-alg.reg.int"),
+        sha1_name("hmac-sha1"),
+        sha256_name("hmac-sha256"),
+        secretstring("anotherRandomData"),
+        secret(secretstring.c_str()),
+        secret_len(secretstring.size())
+    {}
+    TSIGKeyRing keyring;
+    const Name key_name;
+    const Name md5_name;
+    const Name sha1_name;
+    const Name sha256_name;
+private:
+    const string secretstring;
+protected:
+    const char* secret;
+    size_t secret_len;
+};
+
+TEST_F(TSIGKeyRingTest, init) {
+    EXPECT_EQ(0, keyring.size());
+}
+
+TEST_F(TSIGKeyRingTest, add) {
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, keyring.add(
+                  TSIGKey(key_name, TSIGKey::HMACSHA256_NAME(),
+                          secret, secret_len)));
+    EXPECT_EQ(1, keyring.size());
+    EXPECT_EQ(TSIGKeyRing::EXIST, keyring.add(
+                  TSIGKey(key_name, TSIGKey::HMACSHA256_NAME(),
+                          secret, secret_len)));
+    // keys are identified by their names, the same name of key with a
+    // different algorithm would be considered a duplicate.
+    EXPECT_EQ(TSIGKeyRing::EXIST, keyring.add(
+                  TSIGKey(Name("example.com"), TSIGKey::HMACSHA1_NAME(),
+                          secret, secret_len)));
+    // names are compared in a case insensitive manner.
+    EXPECT_EQ(TSIGKeyRing::EXIST, keyring.add(
+                  TSIGKey(Name("EXAMPLE.COM"), TSIGKey::HMACSHA1_NAME(),
+                          secret, secret_len)));
+    EXPECT_EQ(1, keyring.size());
+}
+
+TEST_F(TSIGKeyRingTest, addMore) {
+    // essentially the same test, but try adding more than 1
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, keyring.add(
+                  TSIGKey(key_name, TSIGKey::HMACSHA256_NAME(),
+                          secret, secret_len)));
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, keyring.add(
+                  TSIGKey(Name("another.example"), TSIGKey::HMACMD5_NAME(),
+                          secret, secret_len)));
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, keyring.add(
+                  TSIGKey(Name("more.example"), TSIGKey::HMACSHA1_NAME(),
+                          secret, secret_len)));
+    EXPECT_EQ(3, keyring.size());
+}
+
+TEST_F(TSIGKeyRingTest, remove) {
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, keyring.add(
+                  TSIGKey(key_name, TSIGKey::HMACSHA256_NAME(),
+                          secret, secret_len)));
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, keyring.remove(key_name));
+    EXPECT_EQ(TSIGKeyRing::NOTFOUND, keyring.remove(key_name));
+}
+
+TEST_F(TSIGKeyRingTest, removeFromSome) {
+    // essentially the same test, but try removing from a larger set
+
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, keyring.add(
+                  TSIGKey(key_name, TSIGKey::HMACSHA256_NAME(),
+                          secret, secret_len)));
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, keyring.add(
+                  TSIGKey(Name("another.example"), TSIGKey::HMACMD5_NAME(),
+                          secret, secret_len)));
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, keyring.add(
+                  TSIGKey(Name("more.example"), TSIGKey::HMACSHA1_NAME(),
+                          secret, secret_len)));
+
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, keyring.remove(Name("another.example")));
+    EXPECT_EQ(TSIGKeyRing::NOTFOUND, keyring.remove(Name("noexist.example")));
+    EXPECT_EQ(2, keyring.size());
+}
+
+TEST_F(TSIGKeyRingTest, find) {
+    // If the keyring is empty the search should fail.
+    EXPECT_EQ(TSIGKeyRing::NOTFOUND, keyring.find(key_name, md5_name).code);
+    EXPECT_EQ(static_cast<const TSIGKey*>(NULL),
+              keyring.find(key_name, md5_name).key);
+
+    // Add a key and try to find it.  Should succeed.
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, keyring.add(TSIGKey(key_name, sha256_name,
+                                                        secret, secret_len)));
+    const TSIGKeyRing::FindResult result1(keyring.find(key_name, sha256_name));
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, result1.code);
+    EXPECT_EQ(key_name, result1.key->getKeyName());
+    EXPECT_EQ(TSIGKey::HMACSHA256_NAME(), result1.key->getAlgorithmName());
+    matchWireData(secret, secret_len,
+                  result1.key->getSecret(), result1.key->getSecretLength());
+
+    // If either key name or algorithm doesn't match, search should fail.
+    const TSIGKeyRing::FindResult result2 =
+        keyring.find(Name("different-key.example"), sha256_name);
+    EXPECT_EQ(TSIGKeyRing::NOTFOUND, result2.code);
+    EXPECT_EQ(static_cast<const TSIGKey*>(NULL), result2.key);
+
+    const TSIGKeyRing::FindResult result3 = keyring.find(key_name, md5_name);
+    EXPECT_EQ(TSIGKeyRing::NOTFOUND, result3.code);
+    EXPECT_EQ(static_cast<const TSIGKey*>(NULL), result3.key);
+
+    // But with just the name it should work
+    const TSIGKeyRing::FindResult result4(keyring.find(key_name));
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, result4.code);
+    EXPECT_EQ(key_name, result4.key->getKeyName());
+    EXPECT_EQ(TSIGKey::HMACSHA256_NAME(), result4.key->getAlgorithmName());
+    matchWireData(secret, secret_len,
+                  result4.key->getSecret(), result4.key->getSecretLength());
+}
+
+TEST_F(TSIGKeyRingTest, findFromSome) {
+    // essentially the same test, but search a larger set
+
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, keyring.add(TSIGKey(key_name, sha256_name,
+                                                        secret, secret_len)));
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, keyring.add(TSIGKey(Name("another.example"),
+                                                        md5_name,
+                                                        secret, secret_len)));
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, keyring.add(TSIGKey(Name("more.example"),
+                                                        sha1_name,
+                                                        secret, secret_len)));
+
+    const TSIGKeyRing::FindResult result(
+        keyring.find(Name("another.example"), md5_name));
+    EXPECT_EQ(TSIGKeyRing::SUCCESS, result.code);
+    EXPECT_EQ(Name("another.example"), result.key->getKeyName());
+    EXPECT_EQ(TSIGKey::HMACMD5_NAME(), result.key->getAlgorithmName());
+
+    EXPECT_EQ(TSIGKeyRing::NOTFOUND,
+              keyring.find(Name("noexist.example"), sha1_name).code);
+    EXPECT_EQ(static_cast<const TSIGKey*>(NULL),
+              keyring.find(Name("noexist.example"), sha256_name).key);
+
+    EXPECT_EQ(TSIGKeyRing::NOTFOUND,
+              keyring.find(Name("another.example"), sha1_name).code);
+    EXPECT_EQ(static_cast<const TSIGKey*>(NULL),
+              keyring.find(Name("another.example"), sha256_name).key);
+}
+
+TEST(TSIGStringTest, TSIGKeyFromToString) {
+    TSIGKey k1 = TSIGKey("test.example:MSG6Ng==:hmac-md5.sig-alg.reg.int");
+    TSIGKey k2 = TSIGKey("test.example.:MSG6Ng==:hmac-md5.sig-alg.reg.int.");
+    TSIGKey k3 = TSIGKey("test.example:MSG6Ng==");
+    TSIGKey k4 = TSIGKey("test.example.:MSG6Ng==:hmac-md5.sig-alg.reg.int.:120");
+    TSIGKey k5 = TSIGKey(Name("test.example."), Name("hmac-sha1."), NULL, 0);
+    // "Unknown" key with empty secret is okay
+    TSIGKey k6 = TSIGKey("test.example.::unknown");
+
+    EXPECT_EQ("test.example.:MSG6Ng==:hmac-md5.sig-alg.reg.int.",
+              k1.toText());
+    EXPECT_EQ("test.example.:MSG6Ng==:hmac-md5.sig-alg.reg.int.",
+              k2.toText());
+    EXPECT_EQ("test.example.:MSG6Ng==:hmac-md5.sig-alg.reg.int.",
+              k3.toText());
+    EXPECT_EQ("test.example.:MSG6Ng==:hmac-md5.sig-alg.reg.int.:120",
+              k4.toText());
+    EXPECT_EQ(120, k4.getDigestbits());
+    EXPECT_EQ("test.example.::hmac-sha1.", k5.toText());
+    EXPECT_EQ(Name("test.example."), k6.getKeyName());
+    EXPECT_EQ(Name("unknown"), k6.getAlgorithmName());
+
+    EXPECT_THROW(TSIGKey(""), isc::InvalidParameter);
+    EXPECT_THROW(TSIGKey(":"), isc::InvalidParameter);
+    EXPECT_THROW(TSIGKey("::"), isc::InvalidParameter);
+    EXPECT_THROW(TSIGKey("..:aa:"), isc::InvalidParameter);
+    EXPECT_THROW(TSIGKey("test.example:xxxx:"), isc::InvalidParameter);
+    EXPECT_THROW(TSIGKey("test.example.::"), isc::InvalidParameter);
+    EXPECT_THROW(TSIGKey("test.example.:"), isc::InvalidParameter);
+    EXPECT_THROW(TSIGKey("test.example.:MSG6Ng==:"), isc::InvalidParameter);
+    EXPECT_THROW(TSIGKey("test.example.:MSG6Ng==:unknown"), isc::InvalidParameter);
+    EXPECT_THROW(TSIGKey("test.example.:MSG6Ng==:hmac-md5.sig-alg.reg.int.:"),
+                 isc::InvalidParameter);
+    EXPECT_THROW(TSIGKey("test.example.:MSG6Ng==:hmac-md5.sig-alg.reg.int.:xxx"),
+                 isc::InvalidParameter);
+}
+
+
+} // end namespace
diff --git a/src/lib/dns/tests/tsigrecord_unittest.cc b/src/lib/dns/tests/tsigrecord_unittest.cc
new file mode 100644
index 0000000..624f03b
--- /dev/null
+++ b/src/lib/dns/tests/tsigrecord_unittest.cc
@@ -0,0 +1,158 @@
+// Copyright (C) 2011-2023 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <vector>
+#include <sstream>
+
+#include <gtest/gtest.h>
+
+#include <util/buffer.h>
+
+#include <dns/exceptions.h>
+#include <dns/messagerenderer.h>
+#include <dns/name.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/tsig.h>
+#include <dns/tsigkey.h>
+#include <dns/tsigrecord.h>
+
+#include <dns/tests/unittest_util.h>
+#include <util/unittests/wiredata.h>
+
+using namespace std;
+using namespace isc::util;
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+using namespace isc::dns::rdata::any;
+using isc::UnitTestUtil;
+using isc::util::unittests::matchWireData;
+
+namespace {
+class TSIGRecordTest : public ::testing::Test {
+protected:
+    TSIGRecordTest() :
+        test_name("www.example.com"), test_mac(16, 0xda),
+        test_rdata(TSIG(TSIGKey::HMACMD5_NAME(), 0x4da8877a, TSIGContext::DEFAULT_FUDGE,
+                        test_mac.size(), &test_mac[0], 0x2d65, 0, 0, NULL)),
+        test_record(test_name, test_rdata),
+        buffer(0) {
+    }
+
+    const Name test_name;
+
+    vector<unsigned char> test_mac;
+
+    const TSIG test_rdata;
+
+    const TSIGRecord test_record;
+
+    OutputBuffer buffer;
+
+    MessageRenderer renderer;
+
+    vector<unsigned char> data;
+};
+
+TEST_F(TSIGRecordTest, getName) {
+    EXPECT_EQ(test_name, test_record.getName());
+}
+
+TEST_F(TSIGRecordTest, getLength) {
+    // 85 = 17 + 26 + 16 + 26
+    // len(www.example.com) = 17
+    // len(hmac-md5.sig-alg.reg.int) = 26
+    // len(MAC) = 16
+    // the rest are fixed length fields (26 in total)
+    EXPECT_EQ(85, test_record.getLength());
+}
+
+TEST_F(TSIGRecordTest, fromParams) {
+    // Construct the same TSIG RR as test_record from parameters.
+    // See the getLength test for the magic number of 85 (although it
+    // actually doesn't matter)
+    const TSIGRecord record(test_name, TSIGRecord::getClass(),
+                            TSIGRecord::getTTL(), test_rdata, 85);
+    // Perform straight sanity checks
+    EXPECT_EQ(test_name, record.getName());
+    EXPECT_EQ(85, record.getLength());
+    EXPECT_EQ(0, test_rdata.compare(record.getRdata()));
+
+    // The constructor doesn't check the length...
+    EXPECT_NO_THROW(TSIGRecord(test_name, TSIGRecord::getClass(),
+                               TSIGRecord::getTTL(), test_rdata, 82));
+    // ...even for impossibly small values...
+    EXPECT_NO_THROW(TSIGRecord(test_name, TSIGRecord::getClass(),
+                               TSIGRecord::getTTL(), test_rdata, 1));
+    // ...or too large values.
+    EXPECT_NO_THROW(TSIGRecord(test_name, TSIGRecord::getClass(),
+                               TSIGRecord::getTTL(), test_rdata, 65536));
+
+    // RDATA must indeed be TSIG
+    EXPECT_THROW(TSIGRecord(test_name, TSIGRecord::getClass(),
+                            TSIGRecord::getTTL(), in::A("192.0.2.1"), 85),
+                 DNSMessageFORMERR);
+
+    // Unexpected class
+    EXPECT_THROW(TSIGRecord(test_name, RRClass::IN(), TSIGRecord::getTTL(),
+                            test_rdata, 85), DNSMessageFORMERR);
+
+    // Unexpected TTL
+    EXPECT_THROW(TSIGRecord(test_name, TSIGRecord::getClass(),
+                            RRTTL(3600), test_rdata, 85), DNSMessageFORMERR);
+}
+
+TEST_F(TSIGRecordTest, recordToWire) {
+    UnitTestUtil::readWireData("tsigrecord_toWire1.wire", data);
+    EXPECT_EQ(1, test_record.toWire(renderer));
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+
+    // Same test for a dumb buffer
+    buffer.clear();
+    EXPECT_EQ(1, test_record.toWire(buffer));
+    matchWireData(&data[0], data.size(),
+                  buffer.getData(), buffer.getLength());
+}
+
+TEST_F(TSIGRecordTest, recordToOLongToWire) {
+    // By setting the limit to "record length - 1", it will fail, and the
+    // renderer will be marked as "truncated".
+    renderer.setLengthLimit(test_record.getLength() - 1);
+    EXPECT_FALSE(renderer.isTruncated()); // not marked before render attempt
+    EXPECT_EQ(0, test_record.toWire(renderer));
+    EXPECT_TRUE(renderer.isTruncated());
+}
+
+TEST_F(TSIGRecordTest, recordToWireAfterNames) {
+    // A similar test but the TSIG RR follows some domain names that could
+    // cause name compression inside TSIG.  Our implementation shouldn't
+    // compress either owner (key) name or the algorithm name.  This test
+    // confirms that.
+
+    UnitTestUtil::readWireData("tsigrecord_toWire2.wire", data);
+    renderer.writeName(TSIGKey::HMACMD5_NAME());
+    renderer.writeName(Name("foo.example.com"));
+    EXPECT_EQ(1, test_record.toWire(renderer));
+    matchWireData(&data[0], data.size(),
+                  renderer.getData(), renderer.getLength());
+}
+
+TEST_F(TSIGRecordTest, toText) {
+    EXPECT_EQ("www.example.com. 0 ANY TSIG hmac-md5.sig-alg.reg.int. "
+              "1302890362 300 16 2tra2tra2tra2tra2tra2g== 11621 NOERROR 0\n",
+              test_record.toText());
+}
+
+// test operator<<.  We simply confirm it appends the result of toText().
+TEST_F(TSIGRecordTest, LeftShiftOperator) {
+    ostringstream oss;
+    oss << test_record;
+    EXPECT_EQ(test_record.toText(), oss.str());
+}
+} // end namespace
diff --git a/src/lib/dns/tests/unittest_util.cc b/src/lib/dns/tests/unittest_util.cc
new file mode 100644
index 0000000..b234c1c
--- /dev/null
+++ b/src/lib/dns/tests/unittest_util.cc
@@ -0,0 +1,176 @@
+// Copyright (C) 2009-2015 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <stdexcept>
+#include <vector>
+#include <string>
+
+#include <gtest/gtest.h>
+
+#include <dns/rcode.h>
+#include <dns/name.h>
+#include <dns/message.h>
+#include <dns/tests/unittest_util.h>
+
+using namespace std;
+using namespace isc::dns;
+
+using isc::UnitTestUtil;
+
+namespace {
+class UnitTestUtilConfig {
+private:
+    // This is a singleton object and cannot be constructed explicitly.
+    UnitTestUtilConfig() {}
+    UnitTestUtilConfig(const UnitTestUtilConfig& source);
+    ~UnitTestUtilConfig() {}
+public:
+    /// Return a singleton unit test configuration object.  On first invocation
+    /// one will be constructed.
+    static UnitTestUtilConfig& getConfig();
+
+    /// A list of paths to wire data files.
+    /// \c UnitTestUtil::readWireData() (first version)
+    /// will search the directories in this list for the specified data file.
+    std::vector<string> data_paths_;
+};
+
+UnitTestUtilConfig&
+UnitTestUtilConfig::getConfig() {
+    static UnitTestUtilConfig config;
+    return (config);
+}
+}
+
+void
+UnitTestUtil::readWireData(const char* datafile, vector<unsigned char>& data) {
+    ifstream ifs;
+
+    const UnitTestUtilConfig& config = UnitTestUtilConfig::getConfig();
+    vector<string>::const_iterator it = config.data_paths_.begin();
+    for (; it != config.data_paths_.end(); ++it) {
+        string data_path = *it;
+        if (data_path.empty() || *data_path.rbegin() != '/') {
+            data_path.push_back('/');
+        }
+        ifs.open((data_path + datafile).c_str(), ios_base::in);
+        if ((ifs.rdstate() & istream::failbit) == 0) {
+            break;
+        }
+    }
+
+    if (it == config.data_paths_.end()) {
+        throw runtime_error("failed to open data file in data paths: " +
+                            string(datafile));
+    }
+
+    data.clear();
+
+    string s;
+    while (getline(ifs, s), !ifs.eof()) {
+        if (ifs.bad() || ifs.fail()) {
+            throw runtime_error("unexpected data line");
+        }
+        if (s.empty() || s[0] == '#') {
+            continue;
+        }
+
+        readWireData(s, data);
+    }
+}
+
+void
+UnitTestUtil::addDataPath(const string& directory) {
+    UnitTestUtilConfig::getConfig().data_paths_.push_back(directory);
+}
+
+void
+UnitTestUtil::readWireData(const string& datastr,
+                           vector<unsigned char>& data)
+{
+    istringstream iss(datastr);
+
+    do {
+        string bytes;
+        iss >> bytes;
+        if (iss.bad() || iss.fail() || (bytes.size() % 2) != 0) {
+            ostringstream err_oss;
+            err_oss << "unexpected input or I/O error in reading " <<
+                datastr;
+            throw runtime_error(err_oss.str());
+        }
+
+        for (string::size_type pos = 0; pos < bytes.size(); pos += 2) {
+            istringstream iss_byte(bytes.substr(pos, 2));
+            unsigned int ch;
+
+            iss_byte >> hex >> ch;
+            if (iss_byte.rdstate() != istream::eofbit) {
+                ostringstream err_oss;
+                err_oss << "invalid byte representation: " << iss_byte.str();
+                throw runtime_error(err_oss.str());
+            }
+            data.push_back(static_cast<unsigned char>(ch));
+        }
+    } while (!iss.eof());
+}
+
+::testing::AssertionResult
+UnitTestUtil::matchName(const char*, const char*,
+                        const isc::dns::Name& name1,
+                        const isc::dns::Name& name2)
+{
+    ::testing::Message msg;
+
+    NameComparisonResult cmpresult = name1.compare(name2);
+    if (cmpresult.getOrder() != 0 ||
+        cmpresult.getRelation() != NameComparisonResult::EQUAL) {
+        msg << "Two names are expected to be equal but not:\n"
+            << "  One: " << name1 << "\n"
+            << "Other: " << name2 << "\n";
+        return (::testing::AssertionFailure(msg));
+    }
+    return (::testing::AssertionSuccess());
+}
+
+void
+UnitTestUtil::createRequestMessage(Message& message,
+                                   const Opcode& opcode,
+                                   const uint16_t qid,
+                                   const Name& name,
+                                   const RRClass& rrclass,
+                                   const RRType& rrtype)
+{
+    message.clear(Message::RENDER);
+    message.setOpcode(opcode);
+    message.setRcode(Rcode::NOERROR());
+    message.setQid(qid);
+    message.addQuestion(Question(name, rrclass, rrtype));
+}
+
+void
+UnitTestUtil::createDNSSECRequestMessage(Message& message,
+                                         const Opcode& opcode,
+                                         const uint16_t qid,
+                                         const Name& name,
+                                         const RRClass& rrclass,
+                                         const RRType& rrtype)
+{
+    message.clear(Message::RENDER);
+    message.setOpcode(opcode);
+    message.setRcode(Rcode::NOERROR());
+    message.setQid(qid);
+    message.addQuestion(Question(name, rrclass, rrtype));
+    EDNSPtr edns(new EDNS());
+    edns->setUDPSize(4096);
+    edns->setDNSSECAwareness(true);
+    message.setEDNS(edns);
+}
diff --git a/src/lib/dns/tests/unittest_util.h b/src/lib/dns/tests/unittest_util.h
new file mode 100644
index 0000000..8c6b8f5
--- /dev/null
+++ b/src/lib/dns/tests/unittest_util.h
@@ -0,0 +1,88 @@
+// Copyright (C) 2009-2017 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#ifndef UNITTEST_UTIL_H
+#define UNITTEST_UTIL_H 1
+
+#include <vector>
+#include <string>
+
+#include <dns/name.h>
+#include <dns/message.h>
+
+#include <gtest/gtest.h>
+
+namespace isc {
+
+class UnitTestUtil {
+public:
+    ///
+    /// read text format wire data from a file and put it to the given vector.
+    ///
+    static void readWireData(const char* datafile,
+                             std::vector<unsigned char>& data);
+
+    ///
+    /// add a path that \c readWireData() will search for test data files.
+    ///
+    static void addDataPath(const std::string& directory);
+
+    ///
+    /// convert a sequence of hex strings into the corresponding list of
+    /// 8-bit integers, and append them to the vector.
+    ///
+    static void readWireData(const std::string& datastr,
+                             std::vector<unsigned char>& data);
+
+    ///
+    /// Compare two names.
+    ///
+    /// This check method uses \c Name::compare() for comparison, which performs
+    /// deeper checks including the equality of offsets, and should be better
+    /// than EXPECT_EQ, which uses operator==.  Like the \c matchWireData()
+    /// method, the usage is a bit awkward; the caller should use
+    /// \c EXPECT_PRED_FORMAT2.
+    ///
+    static ::testing::AssertionResult
+    matchName(const char* nameexp1, const char* nameexp2,
+              const isc::dns::Name& name1, const isc::dns::Name& name2);
+
+    ///
+    /// Populate a request message
+    ///
+    /// Create a request message in 'request_message' using the 
+    /// opcode 'opcode' and the name/class/type query tuple specified in
+    /// 'name', 'rrclass' and 'rrtype.
+    static void
+    createRequestMessage(isc::dns::Message& request_message,
+                         const isc::dns::Opcode& opcode,
+                         const uint16_t qid,
+                         const isc::dns::Name& name,
+                         const isc::dns::RRClass& rrclass,
+                         const isc::dns::RRType& rrtype);
+
+    ///
+    /// Populate a DNSSEC request message
+    ///
+    /// Create a request message in 'request_message' using the
+    /// opcode 'opcode' and the name/class/type query tuple specified in
+    /// 'name', 'rrclass' and 'rrtype.
+    /// EDNS will be added with DO=1 and bufsize 4096
+    static void
+    createDNSSECRequestMessage(isc::dns::Message& request_message,
+                               const isc::dns::Opcode& opcode,
+                               const uint16_t qid,
+                               const isc::dns::Name& name,
+                               const isc::dns::RRClass& rrclass,
+                               const isc::dns::RRType& rrtype);
+
+};
+}
+#endif // UNITTEST_UTIL_H
+
+// Local Variables: 
+// mode: c++
+// End: 
diff --git a/src/lib/dns/tests/zone_checker_unittest.cc b/src/lib/dns/tests/zone_checker_unittest.cc
new file mode 100644
index 0000000..863b439
--- /dev/null
+++ b/src/lib/dns/tests/zone_checker_unittest.cc
@@ -0,0 +1,349 @@
+// Copyright (C) 2012-2020 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <dns/zone_checker.h>
+
+#include <exceptions/exceptions.h>
+
+#include <dns/name.h>
+#include <dns/rrclass.h>
+#include <dns/rrset.h>
+#include <dns/rrtype.h>
+#include <dns/rrttl.h>
+#include <dns/rdataclass.h>
+#include <dns/rrset_collection.h>
+
+#include <gtest/gtest.h>
+
+#include <boost/scoped_ptr.hpp>
+
+#include <algorithm>
+#include <functional>
+#include <string>
+#include <sstream>
+#include <vector>
+
+using isc::Unexpected;
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+namespace ph = std::placeholders;
+
+namespace {
+
+const char* const soa_txt = "ns.example.com. root.example.com. 0 0 0 0 0";
+const char* const ns_txt1 = "ns.example.com.";
+const char* const ns_a_txt1 = "192.0.2.1";
+const char* const ns_txt2 = "ns2.example.com.";
+const char* const ns_a_txt2 = "192.0.2.2";
+
+class ZoneCheckerTest : public ::testing::Test {
+protected:
+    ZoneCheckerTest() :
+        zname_("example.com"), zclass_(RRClass::IN()),
+        soa_(new RRset(zname_, zclass_, RRType::SOA(), RRTTL(60))),
+        ns_(new RRset(zname_, zclass_, RRType::NS(), RRTTL(60))),
+        callbacks_(std::bind(&ZoneCheckerTest::callback, this, ph::_1, true),
+                   std::bind(&ZoneCheckerTest::callback, this, ph::_1, false))
+    {
+        std::stringstream ss;
+        ss << "example.com. 60 IN SOA " << soa_txt << "\n";
+        ss << "example.com. 60 IN NS " << ns_txt1 << "\n";
+        ss << "ns.example.com. 60 IN A " << ns_a_txt1 << "\n";
+        ss << "ns2.example.com. 60 IN A " << ns_a_txt2 << "\n";
+        rrsets_.reset(new RRsetCollection(ss, zname_, zclass_));
+    }
+
+public:
+    // This one is passed to std::bind.  Some compilers seem to require
+    // it be public.
+    void callback(const std::string& reason, bool is_error) {
+        if (is_error) {
+            errors_.push_back(reason);
+        } else {
+            warns_.push_back(reason);
+        }
+    }
+
+protected:
+    // Check stored issue messages with expected ones.  Clear vectors so
+    // the caller can check other cases.
+    void checkIssues() {
+        EXPECT_EQ(expected_errors_.size(), errors_.size());
+        for (size_t i = 0;
+             i < std::min(expected_errors_.size(), errors_.size());
+             ++i) {
+            // The actual message should begin with the expected message.
+            EXPECT_EQ(0, errors_[0].find(expected_errors_[0]))
+                << "actual message: " << errors_[0] << " expected: " <<
+                expected_errors_[0];
+        }
+        EXPECT_EQ(expected_warns_.size(), warns_.size());
+        for (size_t i = 0;
+             i < std::min(expected_warns_.size(), warns_.size());
+             ++i) {
+            EXPECT_EQ(0, warns_[0].find(expected_warns_[0]))
+                << "actual message: " << warns_[0] << " expected: " <<
+                expected_warns_[0];
+        }
+
+        errors_.clear();
+        expected_errors_.clear();
+        warns_.clear();
+        expected_warns_.clear();
+    }
+
+    const Name zname_;
+    const RRClass zclass_;
+    boost::scoped_ptr<RRsetCollection> rrsets_;
+    RRsetPtr soa_;
+    RRsetPtr ns_;
+    std::vector<std::string> errors_;
+    std::vector<std::string> warns_;
+    std::vector<std::string> expected_errors_;
+    std::vector<std::string> expected_warns_;
+    ZoneCheckerCallbacks callbacks_;
+};
+
+TEST_F(ZoneCheckerTest, checkGood) {
+    // Checking a valid case.  No errors or warnings should be reported.
+    EXPECT_TRUE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    checkIssues();
+
+    // Multiple NS RRs are okay.
+    rrsets_->removeRRset(zname_, zclass_, RRType::NS());
+    ns_->addRdata(generic::NS(ns_txt1));
+    ns_->addRdata(generic::NS(ns_txt2));
+    rrsets_->addRRset(ns_);
+    EXPECT_TRUE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    checkIssues();
+}
+
+TEST_F(ZoneCheckerTest, checkSOA) {
+    // If the zone has no SOA it triggers an error.
+    rrsets_->removeRRset(zname_, zclass_, RRType::SOA());
+    EXPECT_FALSE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    expected_errors_.push_back("zone example.com/IN: has 0 SOA records");
+    checkIssues();
+
+    // If null callback is specified, checkZone() only returns the final
+    // result.
+    ZoneCheckerCallbacks noerror_callbacks(
+        0, std::bind(&ZoneCheckerTest::callback, this, ph::_1, false));
+    EXPECT_FALSE(checkZone(zname_, zclass_, *rrsets_, noerror_callbacks));
+    checkIssues();
+
+    // If there are more than 1 SOA RR, it's also an error.
+    errors_.clear();
+    soa_->addRdata(generic::SOA(soa_txt));
+    soa_->addRdata(generic::SOA("ns2.example.com. . 0 0 0 0 0"));
+    rrsets_->addRRset(soa_);
+    EXPECT_FALSE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    expected_errors_.push_back("zone example.com/IN: has 2 SOA records");
+    checkIssues();
+
+    // If the SOA RRset is "empty", it's treated as an implementation
+    // (rather than operational) error and results in an exception.
+    rrsets_->removeRRset(zname_, zclass_, RRType::SOA());
+    soa_.reset(new RRset(zname_, zclass_, RRType::SOA(), RRTTL(60)));
+    rrsets_->addRRset(soa_);
+    EXPECT_THROW(checkZone(zname_, zclass_, *rrsets_, callbacks_), Unexpected);
+    checkIssues();              // no error/warning should be reported
+
+    // Likewise, if the SOA RRset contains non SOA Rdata, it should be a bug.
+    rrsets_->removeRRset(zname_, zclass_, RRType::SOA());
+    soa_.reset(new RRset(zname_, zclass_, RRType::SOA(), RRTTL(60)));
+    soa_->addRdata(createRdata(RRType::NS(), zclass_, "ns.example.com."));
+    rrsets_->addRRset(soa_);
+    EXPECT_THROW(checkZone(zname_, zclass_, *rrsets_, callbacks_), Unexpected);
+    checkIssues();              // no error/warning should be reported
+}
+
+TEST_F(ZoneCheckerTest, checkNS) {
+    // If the zone has no NS at origin it triggers an error.
+    rrsets_->removeRRset(zname_, zclass_, RRType::NS());
+    EXPECT_FALSE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    expected_errors_.push_back("zone example.com/IN: has no NS records");
+    checkIssues();
+
+    // Check two buggy cases like the SOA tests
+    ns_.reset(new RRset(zname_, zclass_, RRType::NS(), RRTTL(60)));
+    rrsets_->addRRset(ns_);
+    EXPECT_THROW(checkZone(zname_, zclass_, *rrsets_, callbacks_), Unexpected);
+    checkIssues();              // no error/warning should be reported
+
+    rrsets_->removeRRset(zname_, zclass_, RRType::NS());
+    ns_.reset(new RRset(zname_, zclass_, RRType::NS(), RRTTL(60)));
+    ns_->addRdata(createRdata(RRType::TXT(), zclass_, "ns.example.com"));
+    rrsets_->addRRset(ns_);
+    EXPECT_THROW(checkZone(zname_, zclass_, *rrsets_, callbacks_), Unexpected);
+    checkIssues();              // no error/warning should be reported
+}
+
+TEST_F(ZoneCheckerTest, checkNSData) {
+    const Name ns_name("ns.example.com");
+
+    // If a ("in-bailiwick") NS name doesn't have an address record, it's
+    // reported as a warning.
+    rrsets_->removeRRset(ns_name, zclass_, RRType::A());
+    EXPECT_TRUE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    expected_warns_.push_back("zone example.com/IN: NS has no address");
+    checkIssues();
+
+    // Same check, but disabling warning callback.  Same result, but without
+    // the warning.
+    ZoneCheckerCallbacks nowarn_callbacks(
+        std::bind(&ZoneCheckerTest::callback, this, ph::_1, true), 0);
+    EXPECT_TRUE(checkZone(zname_, zclass_, *rrsets_, nowarn_callbacks));
+    checkIssues();
+
+    // A tricky case: if the name matches a wildcard, it should technically
+    // be considered valid, but this checker doesn't check that far and still
+    // warns.
+    RRsetPtr wild(new RRset(Name("*.example.com"), zclass_, RRType::A(),
+                            RRTTL(0)));
+    wild->addRdata(in::A("192.0.2.255"));
+    rrsets_->addRRset(wild);
+    EXPECT_TRUE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    expected_warns_.push_back("zone example.com/IN: NS has no address");
+    checkIssues();
+
+    // If there's a CNAME at the name instead, it's an error.
+    rrsets_->removeRRset(Name("*.example.com"), zclass_, RRType::A());
+    RRsetPtr cname(new RRset(ns_name, zclass_, RRType::CNAME(), RRTTL(60)));
+    cname->addRdata(generic::CNAME("cname.example.com."));
+    rrsets_->addRRset(cname);
+    EXPECT_FALSE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    expected_errors_.push_back("zone example.com/IN: NS 'ns.example.com' is "
+                               "a CNAME (illegal per RFC2181)");
+    checkIssues();
+
+    // It doesn't have to be A.  An AAAA is enough.
+    rrsets_->removeRRset(ns_name, zclass_, RRType::CNAME());
+    RRsetPtr aaaa(new RRset(ns_name, zclass_, RRType::AAAA(), RRTTL(60)));
+    aaaa->addRdata(in::AAAA("2001:db8::1"));
+    rrsets_->addRRset(aaaa);
+    EXPECT_TRUE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    checkIssues();
+
+    // Coexisting CNAME makes it error (CNAME with other record is itself
+    // invalid, but it's a different issue in this context)
+    rrsets_->addRRset(cname);
+    EXPECT_FALSE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    expected_errors_.push_back("zone example.com/IN: NS 'ns.example.com' is "
+                               "a CNAME (illegal per RFC2181)");
+    checkIssues();
+
+    // It doesn't matter if the NS name is "out of bailiwick".
+    rrsets_->removeRRset(ns_name, zclass_, RRType::CNAME());
+    rrsets_->removeRRset(zname_, zclass_, RRType::NS());
+    ns_.reset(new RRset(zname_, zclass_, RRType::NS(), RRTTL(60)));
+    ns_->addRdata(generic::NS("ns.example.org."));
+    rrsets_->addRRset(ns_);
+    EXPECT_TRUE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    checkIssues();
+
+    // Note that if the NS name is the origin name, it should be checked
+    rrsets_->removeRRset(zname_, zclass_, RRType::NS());
+    ns_.reset(new RRset(zname_, zclass_, RRType::NS(), RRTTL(60)));
+    ns_->addRdata(generic::NS(zname_));
+    rrsets_->addRRset(ns_);
+    EXPECT_TRUE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    expected_warns_.push_back("zone example.com/IN: NS has no address");
+    checkIssues();
+}
+
+TEST_F(ZoneCheckerTest, checkNSWithDelegation) {
+    // Tests various cases where there's a zone cut due to delegation between
+    // the zone origin and the NS name.  In each case the NS name doesn't have
+    // an address record.
+    const Name ns_name("ns.child.example.com");
+
+    // Zone cut due to delegation in the middle; the check for the address
+    // record should be skipped.
+    rrsets_->removeRRset(zname_, zclass_, RRType::NS());
+    ns_.reset(new RRset(zname_, zclass_, RRType::NS(), RRTTL(60)));
+    ns_->addRdata(generic::NS(ns_name));
+    rrsets_->addRRset(ns_);
+    RRsetPtr child_ns(new RRset(Name("child.example.com"), zclass_,
+                                RRType::NS(), RRTTL(60)));
+    child_ns->addRdata(generic::NS("ns.example.org."));
+    rrsets_->addRRset(child_ns);
+    EXPECT_TRUE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    checkIssues();
+
+    // Zone cut at the NS name.  Same result.
+    rrsets_->removeRRset(child_ns->getName(), zclass_, RRType::NS());
+    child_ns.reset(new RRset(ns_name, zclass_, RRType::NS(), RRTTL(60)));
+    child_ns->addRdata(generic::NS("ns.example.org."));
+    rrsets_->addRRset(child_ns);
+    EXPECT_TRUE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    checkIssues();
+
+    // Zone cut below the NS name.  The check applies.
+    rrsets_->removeRRset(child_ns->getName(), zclass_, RRType::NS());
+    child_ns.reset(new RRset(Name("another.ns.child.example.com"), zclass_,
+                             RRType::NS(), RRTTL(60)));
+    child_ns->addRdata(generic::NS("ns.example.org."));
+    rrsets_->addRRset(child_ns);
+    EXPECT_TRUE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    expected_warns_.push_back("zone example.com/IN: NS has no address");
+    checkIssues();
+}
+
+TEST_F(ZoneCheckerTest, checkNSWithDNAME) {
+    // Similar to the above case, but the zone cut is due to DNAME.  This is
+    // an invalid configuration.
+    const Name ns_name("ns.child.example.com");
+
+    // Zone cut due to DNAME at the zone origin.  This is an invalid case.
+    rrsets_->removeRRset(zname_, zclass_, RRType::NS());
+    ns_.reset(new RRset(zname_, zclass_, RRType::NS(), RRTTL(60)));
+    ns_->addRdata(generic::NS(ns_name));
+    rrsets_->addRRset(ns_);
+    RRsetPtr dname(new RRset(zname_, zclass_, RRType::DNAME(), RRTTL(60)));
+    dname->addRdata(generic::DNAME("example.org."));
+    rrsets_->addRRset(dname);
+    EXPECT_FALSE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    expected_errors_.push_back("zone example.com/IN: NS 'ns.child.example.com'"
+                               " is below a DNAME 'example.com'");
+    checkIssues();
+
+    // Zone cut due to DNAME in the middle.  Same result.
+    rrsets_->removeRRset(zname_, zclass_, RRType::DNAME());
+    dname.reset(new RRset(Name("child.example.com"), zclass_, RRType::DNAME(),
+                          RRTTL(60)));
+    dname->addRdata(generic::DNAME("example.org."));
+    rrsets_->addRRset(dname);
+    EXPECT_FALSE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    expected_errors_.push_back("zone example.com/IN: NS 'ns.child.example.com'"
+                               " is below a DNAME 'child.example.com'");
+    checkIssues();
+
+    // A tricky case: there's also an NS at the name that has DNAME.  It's
+    // prohibited per RFC6672 so we could say it's "undefined".  Nevertheless,
+    // this implementation prefers the NS and skips further checks.
+    ns_.reset(new RRset(Name("child.example.com"), zclass_, RRType::NS(),
+                        RRTTL(60)));
+    ns_->addRdata(generic::NS("ns.example.org."));
+    rrsets_->addRRset(ns_);
+    EXPECT_TRUE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    checkIssues();
+
+    // Zone cut due to DNAME at the NS name.  In this case DNAME doesn't
+    // affect the NS name, so it should result in "no address record" warning.
+    rrsets_->removeRRset(dname->getName(), zclass_, RRType::DNAME());
+    rrsets_->removeRRset(ns_->getName(), zclass_, RRType::NS());
+    dname.reset(new RRset(ns_name, zclass_, RRType::DNAME(), RRTTL(60)));
+    dname->addRdata(generic::DNAME("example.org."));
+    rrsets_->addRRset(dname);
+    EXPECT_TRUE(checkZone(zname_, zclass_, *rrsets_, callbacks_));
+    expected_warns_.push_back("zone example.com/IN: NS has no address");
+    checkIssues();
+}
+
+}