DNAME unit test

git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@1024 e5f2f494-b856-4b98-b285-d166d9295462

src/lib/dns/cpp/tests/rdata_dname_unittest.cc

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+// Copyright (C) 2010  Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+// $Id$
+
+#include <dns/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 "unittest_util.h"
+#include "rdata_unittest.h"
+
+using isc::UnitTestUtil;
+using namespace std;
+using namespace isc::dns;
+using namespace isc::dns::rdata;
+
+namespace {
+class Rdata_DNAME_Test : public RdataTest {
+    // there's nothing to specialize
+};
+
+const generic::DNAME rdata_dname("dn.example.com");
+const generic::DNAME rdata_dname2("dn2.example.com");
+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.  all labels except the first should be
+    // compressed.
+    0x03, 0x64, 0x6e, 0x32, 0xc0, 0x03 };
+
+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, createFromWire)
+{
+    EXPECT_EQ(0, rdata_dname.compare(
+                  *rdataFactoryFromFile(RRType("DNAME"), RRClass("IN"),
+                                        "testdata/rdata_dname_fromWire")));
+    // RDLENGTH is too short
+    EXPECT_THROW(rdataFactoryFromFile(RRType("DNAME"), RRClass("IN"),
+                                      "testdata/rdata_dname_fromWire", 18),
+                 InvalidRdataLength);
+    // RDLENGTH is too long
+    EXPECT_THROW(rdataFactoryFromFile(RRType("DNAME"), RRClass("IN"),
+                                      "testdata/rdata_dname_fromWire", 36),
+                 InvalidRdataLength);
+    // incomplete name.  the error should be detected in the name constructor
+    EXPECT_THROW(rdataFactoryFromFile(RRType("DNAME"), RRClass("IN"),
+                                      "testdata/rdata_dname_fromWire", 71),
+                 IncompleteName);
+
+    EXPECT_EQ(0, generic::DNAME("dn2.example.com").compare(
+                  *rdataFactoryFromFile(RRType("DNAME"), RRClass("IN"),
+                                        "testdata/rdata_dname_fromWire", 55)));
+    EXPECT_THROW(*rdataFactoryFromFile(RRType("DNAME"), RRClass("IN"),
+                                       "testdata/rdata_dname_fromWire", 63),
+                 InvalidRdataLength);
+}
+
+TEST_F(Rdata_DNAME_Test, toWireBuffer)
+{
+    rdata_dname.toWire(obuffer);
+    EXPECT_PRED_FORMAT4(UnitTestUtil::matchWireData,
+                        obuffer.getData(), obuffer.getLength(),
+                        wiredata_dname, sizeof(wiredata_dname));
+}
+
+TEST_F(Rdata_DNAME_Test, toWireRenderer)
+{
+    rdata_dname.toWire(renderer);
+    EXPECT_PRED_FORMAT4(UnitTestUtil::matchWireData,
+                        obuffer.getData(), obuffer.getLength(),
+                        wiredata_dname, sizeof(wiredata_dname));
+    rdata_dname2.toWire(renderer);
+    EXPECT_PRED_FORMAT4(UnitTestUtil::matchWireData,
+                        obuffer.getData(), obuffer.getLength(),
+                        wiredata_dname2, sizeof(wiredata_dname2));
+}
+
+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());
+}
+}