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// Copyright (c) 2018 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <test/data/blockfilters.json.h>
#include <test/test_bitcoin.h>
#include <blockfilter.h>
#include <core_io.h>
#include <serialize.h>
#include <streams.h>
#include <univalue.h>
#include <util/strencodings.h>
#include <boost/test/unit_test.hpp>
BOOST_AUTO_TEST_SUITE(blockfilter_tests)
BOOST_AUTO_TEST_CASE(gcsfilter_test)
{
GCSFilter::ElementSet included_elements, excluded_elements;
for (int i = 0; i < 100; ++i) {
GCSFilter::Element element1(32);
element1[0] = i;
included_elements.insert(std::move(element1));
GCSFilter::Element element2(32);
element2[1] = i;
excluded_elements.insert(std::move(element2));
}
GCSFilter filter(0, 0, 10, 1 << 10, included_elements);
for (const auto& element : included_elements) {
BOOST_CHECK(filter.Match(element));
auto insertion = excluded_elements.insert(element);
BOOST_CHECK(filter.MatchAny(excluded_elements));
excluded_elements.erase(insertion.first);
}
}
BOOST_AUTO_TEST_CASE(blockfilter_basic_test)
{
CScript included_scripts[5], excluded_scripts[3];
// First two are outputs on a single transaction.
included_scripts[0] << std::vector<unsigned char>(0, 65) << OP_CHECKSIG;
included_scripts[1] << OP_DUP << OP_HASH160 << std::vector<unsigned char>(1, 20) << OP_EQUALVERIFY << OP_CHECKSIG;
// Third is an output on in a second transaction.
included_scripts[2] << OP_1 << std::vector<unsigned char>(2, 33) << OP_1 << OP_CHECKMULTISIG;
// Last two are spent by a single transaction.
included_scripts[3] << OP_0 << std::vector<unsigned char>(3, 32);
included_scripts[4] << OP_4 << OP_ADD << OP_8 << OP_EQUAL;
// OP_RETURN output is an output on the second transaction.
excluded_scripts[0] << OP_RETURN << std::vector<unsigned char>(4, 40);
// This script is not related to the block at all.
excluded_scripts[1] << std::vector<unsigned char>(5, 33) << OP_CHECKSIG;
CMutableTransaction tx_1;
tx_1.vout.emplace_back(100, included_scripts[0]);
tx_1.vout.emplace_back(200, included_scripts[1]);
CMutableTransaction tx_2;
tx_2.vout.emplace_back(300, included_scripts[2]);
tx_2.vout.emplace_back(0, excluded_scripts[0]);
tx_2.vout.emplace_back(400, excluded_scripts[2]); // Script is empty
CBlock block;
block.vtx.push_back(MakeTransactionRef(tx_1));
block.vtx.push_back(MakeTransactionRef(tx_2));
CBlockUndo block_undo;
block_undo.vtxundo.emplace_back();
block_undo.vtxundo.back().vprevout.emplace_back(CTxOut(500, included_scripts[3]), 1000, true);
block_undo.vtxundo.back().vprevout.emplace_back(CTxOut(600, included_scripts[4]), 10000, false);
block_undo.vtxundo.back().vprevout.emplace_back(CTxOut(700, excluded_scripts[2]), 100000, false);
BlockFilter block_filter(BlockFilterType::BASIC, block, block_undo);
const GCSFilter& filter = block_filter.GetFilter();
for (const CScript& script : included_scripts) {
BOOST_CHECK(filter.Match(GCSFilter::Element(script.begin(), script.end())));
}
for (const CScript& script : excluded_scripts) {
BOOST_CHECK(!filter.Match(GCSFilter::Element(script.begin(), script.end())));
}
}
BOOST_AUTO_TEST_CASE(blockfilters_json_test)
{
UniValue json;
std::string json_data(json_tests::blockfilters,
json_tests::blockfilters + sizeof(json_tests::blockfilters));
if (!json.read(json_data) || !json.isArray()) {
BOOST_ERROR("Parse error.");
return;
}
const UniValue& tests = json.get_array();
for (unsigned int i = 0; i < tests.size(); i++) {
UniValue test = tests[i];
std::string strTest = test.write();
if (test.size() == 1) {
continue;
} else if (test.size() < 7) {
BOOST_ERROR("Bad test: " << strTest);
continue;
}
unsigned int pos = 0;
/*int block_height =*/ test[pos++].get_int();
uint256 block_hash;
BOOST_CHECK(ParseHashStr(test[pos++].get_str(), block_hash));
CBlock block;
BOOST_REQUIRE(DecodeHexBlk(block, test[pos++].get_str()));
CBlockUndo block_undo;
block_undo.vtxundo.emplace_back();
CTxUndo& tx_undo = block_undo.vtxundo.back();
const UniValue& prev_scripts = test[pos++].get_array();
for (unsigned int ii = 0; ii < prev_scripts.size(); ii++) {
std::vector<unsigned char> raw_script = ParseHex(prev_scripts[ii].get_str());
CTxOut txout(0, CScript(raw_script.begin(), raw_script.end()));
tx_undo.vprevout.emplace_back(txout, 0, false);
}
uint256 prev_filter_header_basic;
BOOST_CHECK(ParseHashStr(test[pos++].get_str(), prev_filter_header_basic));
std::vector<unsigned char> filter_basic = ParseHex(test[pos++].get_str());
uint256 filter_header_basic;
BOOST_CHECK(ParseHashStr(test[pos++].get_str(), filter_header_basic));
BlockFilter computed_filter_basic(BlockFilterType::BASIC, block, block_undo);
BOOST_CHECK(computed_filter_basic.GetFilter().GetEncoded() == filter_basic);
uint256 computed_header_basic = computed_filter_basic.ComputeHeader(prev_filter_header_basic);
BOOST_CHECK(computed_header_basic == filter_header_basic);
}
}
BOOST_AUTO_TEST_SUITE_END()
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