1 files changed, 135 insertions, 0 deletions
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());
+}
+}