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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file rlp.cpp
* @author Gav Wood <i@gavwood.com>
* @date 2014
* RLP test functions.
*/
#include <fstream>
#include <sstream>
#include "JsonSpiritHeaders.h"
#include <libdevcore/Log.h>
#include <libdevcore/RLP.h>
#include <libdevcore/Common.h>
#include <boost/test/unit_test.hpp>
#include <algorithm>
using namespace std;
using namespace dev;
namespace js = json_spirit;
namespace dev
{
namespace test
{
static void buildRLP(js::mValue& _v, RLPStream& _rlp)
{
if (_v.type() == js::array_type)
{
RLPStream s;
for (auto& i: _v.get_array())
buildRLP(i, s);
_rlp.appendList(s.out());
}
else if (_v.type() == js::int_type)
_rlp.append(_v.get_uint64());
else if (_v.type() == js::str_type)
{
auto s = _v.get_str();
if (s.size() && s[0] == '#')
_rlp.append(bigint(s.substr(1)));
else
_rlp.append(s);
}
}
static void getRLPTestCases(js::mValue& v)
{
string s = asString(contents("../../../tests/rlptest.json"));
BOOST_REQUIRE_MESSAGE( s.length() > 0,
"Contents of 'rlptest.json' is empty. Have you cloned the 'tests' repo branch develop?");
js::read_string(s, v);
}
static void checkRLPTestCase(js::mObject& o)
{
BOOST_REQUIRE( o.count("in") > 0 );
BOOST_REQUIRE( o.count("out") > 0 );
BOOST_REQUIRE(!o["out"].is_null());
}
static void checkRLPAgainstJson(js::mValue& v, RLP& u)
{
if ( v.type() == js::str_type )
{
const std::string& expectedText = v.get_str();
if ( expectedText.front() == '#' )
{
// Deal with bigint instead of a raw string
std::string bigIntStr = expectedText.substr(1,expectedText.length()-1);
std::stringstream bintStream(bigIntStr);
bigint val;
bintStream >> val;
BOOST_CHECK( !u.isList() );
BOOST_CHECK( !u.isNull() );
BOOST_CHECK( u ); // operator bool()
BOOST_CHECK(u == val);
}
else
{
BOOST_CHECK( !u.isList() );
BOOST_CHECK( !u.isNull() );
BOOST_CHECK( u.isData() );
BOOST_CHECK( u );
BOOST_CHECK( u.size() == expectedText.length() );
BOOST_CHECK(u == expectedText);
}
}
else if ( v.type() == js::int_type )
{
const int expectedValue = v.get_int();
BOOST_CHECK( u.isInt() );
BOOST_CHECK( !u.isList() );
BOOST_CHECK( !u.isNull() );
BOOST_CHECK( u ); // operator bool()
BOOST_CHECK(u == expectedValue);
}
else if ( v.type() == js::array_type )
{
BOOST_CHECK( u.isList() );
BOOST_CHECK( !u.isInt() );
BOOST_CHECK( !u.isData() );
js::mArray& arr = v.get_array();
BOOST_CHECK( u.itemCount() == arr.size() );
unsigned i;
for( i = 0; i < arr.size(); i++ )
{
RLP item = u[i];
checkRLPAgainstJson(arr[i], item);
}
}
else
{
BOOST_ERROR("Invalid Javascript object!");
}
}
}
}
BOOST_AUTO_TEST_CASE(rlp_encoding_test)
{
cnote << "Testing RLP Encoding...";
js::mValue v;
dev::test::getRLPTestCases(v);
for (auto& i: v.get_obj())
{
js::mObject& o = i.second.get_obj();
cnote << i.first;
dev::test::checkRLPTestCase(o);
RLPStream s;
dev::test::buildRLP(o["in"], s);
std::string expectedText(o["out"].get_str());
std::transform(expectedText.begin(), expectedText.end(), expectedText.begin(), ::tolower );
const std::string& computedText = toHex(s.out());
std::stringstream msg;
msg << "Encoding Failed: expected: " << expectedText << std::endl;
msg << " But Computed: " << computedText;
BOOST_CHECK_MESSAGE(
expectedText == computedText,
msg.str()
);
}
}
BOOST_AUTO_TEST_CASE(rlp_decoding_test)
{
cnote << "Testing RLP decoding...";
// Uses the same test cases as encoding but in reverse.
// We read into the string of hex values, convert to bytes,
// and then compare the output structure to the json of the
// input object.
js::mValue v;
dev::test::getRLPTestCases(v);
for (auto& i: v.get_obj())
{
js::mObject& o = i.second.get_obj();
cnote << i.first;
dev::test::checkRLPTestCase(o);
js::mValue& inputData = o["in"];
bytes payloadToDecode = fromHex(o["out"].get_str());
RLP payload(payloadToDecode);
dev::test::checkRLPAgainstJson(inputData, payload);
}
}
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