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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.
#include <stdexcept>
#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 <gtest/gtest.h>
#include <dns/tests/unittest_util.h>
using isc::UnitTestUtil;
using namespace std;
using namespace isc::dns;
using namespace isc::util;
using namespace isc::dns::rdata;
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_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_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, setName) {
rrset_a.setName(test_nsname);
EXPECT_EQ(test_nsname, rrset_a.getName());
}
void
addRdataTestCommon(const RRset& rrset) {
EXPECT_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);
// Pointer version of addRdata() doesn't type check and does allow to
//add a different type of Rdata as a result.
rrset_a_empty.addRdata(createRdata(RRType::NS(), RRClass::IN(),
"ns.example.com"));
EXPECT_EQ(3, rrset_a_empty.getRdataCount());
}
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);
}
TEST_F(RRsetTest, toWireBuffer) {
rrset_a.toWire(buffer);
UnitTestUtil::readWireData("rrset_toWire1", wiredata);
EXPECT_PRED_FORMAT4(UnitTestUtil::matchWireData, buffer.getData(),
buffer.getLength(), &wiredata[0], wiredata.size());
// toWire() cannot be performed for an empty RRset.
buffer.clear();
EXPECT_THROW(rrset_a_empty.toWire(buffer), EmptyRRset);
}
TEST_F(RRsetTest, toWireRenderer) {
rrset_ns.addRdata(generic::NS(test_nsname));
rrset_a.toWire(renderer);
rrset_ns.toWire(renderer);
UnitTestUtil::readWireData("rrset_toWire2", wiredata);
EXPECT_PRED_FORMAT4(UnitTestUtil::matchWireData, renderer.getData(),
renderer.getLength(), &wiredata[0], wiredata.size());
// toWire() cannot be performed for an empty RRset.
renderer.clear();
EXPECT_THROW(rrset_a_empty.toWire(renderer), EmptyRRset);
}
// 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());
}
}
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