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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 <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>
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;
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)))); }
};
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)));
}
}
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