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Maximum number of transactions allowed in a package is 25, equal to the default mempool descendant limit: if a package has more transactions than this, either it would fail default mempool descendant limit or the transactions don't all have a dependency relationship (but then they shouldn't be in a package together). Same rationale for 101KvB virtual size package limit. Note that these policies are only used in test accepts so far.
148 lines
7.4 KiB
C++
148 lines
7.4 KiB
C++
// Copyright (c) 2017-2020 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <consensus/validation.h>
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#include <key_io.h>
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#include <policy/packages.h>
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#include <policy/policy.h>
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#include <primitives/transaction.h>
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#include <script/script.h>
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#include <script/standard.h>
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#include <test/util/setup_common.h>
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#include <validation.h>
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#include <boost/test/unit_test.hpp>
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BOOST_AUTO_TEST_SUITE(txvalidation_tests)
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/**
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* Ensure that the mempool won't accept coinbase transactions.
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*/
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BOOST_FIXTURE_TEST_CASE(tx_mempool_reject_coinbase, TestChain100Setup)
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{
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CScript scriptPubKey = CScript() << ToByteVector(coinbaseKey.GetPubKey()) << OP_CHECKSIG;
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CMutableTransaction coinbaseTx;
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coinbaseTx.nVersion = 1;
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coinbaseTx.vin.resize(1);
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coinbaseTx.vout.resize(1);
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coinbaseTx.vin[0].scriptSig = CScript() << OP_11 << OP_EQUAL;
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coinbaseTx.vout[0].nValue = 1 * CENT;
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coinbaseTx.vout[0].scriptPubKey = scriptPubKey;
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BOOST_CHECK(CTransaction(coinbaseTx).IsCoinBase());
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LOCK(cs_main);
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unsigned int initialPoolSize = m_node.mempool->size();
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const MempoolAcceptResult result = AcceptToMemoryPool(::ChainstateActive(), *m_node.mempool, MakeTransactionRef(coinbaseTx),
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true /* bypass_limits */);
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BOOST_CHECK(result.m_result_type == MempoolAcceptResult::ResultType::INVALID);
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// Check that the transaction hasn't been added to mempool.
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BOOST_CHECK_EQUAL(m_node.mempool->size(), initialPoolSize);
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// Check that the validation state reflects the unsuccessful attempt.
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BOOST_CHECK(result.m_state.IsInvalid());
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BOOST_CHECK_EQUAL(result.m_state.GetRejectReason(), "coinbase");
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BOOST_CHECK(result.m_state.GetResult() == TxValidationResult::TX_CONSENSUS);
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}
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// Create placeholder transactions that have no meaning.
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inline CTransactionRef create_placeholder_tx(size_t num_inputs, size_t num_outputs)
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{
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CMutableTransaction mtx = CMutableTransaction();
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mtx.vin.resize(num_inputs);
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mtx.vout.resize(num_outputs);
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auto random_script = CScript() << ToByteVector(InsecureRand256()) << ToByteVector(InsecureRand256());
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for (size_t i{0}; i < num_inputs; ++i) {
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mtx.vin[i].prevout.hash = InsecureRand256();
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mtx.vin[i].prevout.n = 0;
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mtx.vin[i].scriptSig = random_script;
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}
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for (size_t o{0}; o < num_outputs; ++o) {
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mtx.vout[o].nValue = 1 * CENT;
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mtx.vout[o].scriptPubKey = random_script;
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}
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return MakeTransactionRef(mtx);
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}
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BOOST_FIXTURE_TEST_CASE(package_tests, TestChain100Setup)
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{
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LOCK(cs_main);
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unsigned int initialPoolSize = m_node.mempool->size();
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// Parent and Child Package
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CKey parent_key;
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parent_key.MakeNewKey(true);
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CScript parent_locking_script = GetScriptForDestination(PKHash(parent_key.GetPubKey()));
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auto mtx_parent = CreateValidMempoolTransaction(/* input_transaction */ m_coinbase_txns[0], /* vout */ 0,
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/* input_height */ 0, /* input_signing_key */ coinbaseKey,
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/* output_destination */ parent_locking_script,
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/* output_amount */ CAmount(49 * COIN), /* submit */ false);
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CTransactionRef tx_parent = MakeTransactionRef(mtx_parent);
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CKey child_key;
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child_key.MakeNewKey(true);
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CScript child_locking_script = GetScriptForDestination(PKHash(child_key.GetPubKey()));
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auto mtx_child = CreateValidMempoolTransaction(/* input_transaction */ tx_parent, /* vout */ 0,
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/* input_height */ 101, /* input_signing_key */ parent_key,
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/* output_destination */ child_locking_script,
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/* output_amount */ CAmount(48 * COIN), /* submit */ false);
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CTransactionRef tx_child = MakeTransactionRef(mtx_child);
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const auto result_parent_child = ProcessNewPackage(m_node.chainman->ActiveChainstate(), *m_node.mempool, {tx_parent, tx_child}, /* test_accept */ true);
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BOOST_CHECK_MESSAGE(result_parent_child.m_state.IsValid(),
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"Package validation unexpectedly failed: " << result_parent_child.m_state.GetRejectReason());
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auto it_parent = result_parent_child.m_tx_results.find(tx_parent->GetWitnessHash());
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auto it_child = result_parent_child.m_tx_results.find(tx_child->GetWitnessHash());
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BOOST_CHECK(it_parent != result_parent_child.m_tx_results.end());
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BOOST_CHECK_MESSAGE(it_parent->second.m_state.IsValid(),
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"Package validation unexpectedly failed: " << it_parent->second.m_state.GetRejectReason());
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BOOST_CHECK(it_child != result_parent_child.m_tx_results.end());
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BOOST_CHECK_MESSAGE(it_child->second.m_state.IsValid(),
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"Package validation unexpectedly failed: " << it_child->second.m_state.GetRejectReason());
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// Packages can't have more than 25 transactions.
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Package package_too_many;
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package_too_many.reserve(MAX_PACKAGE_COUNT + 1);
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for (size_t i{0}; i < MAX_PACKAGE_COUNT + 1; ++i) {
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package_too_many.emplace_back(create_placeholder_tx(1, 1));
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}
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auto result_too_many = ProcessNewPackage(m_node.chainman->ActiveChainstate(), *m_node.mempool, package_too_many, /* test_accept */ true);
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BOOST_CHECK(result_too_many.m_state.IsInvalid());
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BOOST_CHECK_EQUAL(result_too_many.m_state.GetResult(), PackageValidationResult::PCKG_POLICY);
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BOOST_CHECK_EQUAL(result_too_many.m_state.GetRejectReason(), "package-too-many-transactions");
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// Packages can't have a total size of more than 101KvB.
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CTransactionRef large_ptx = create_placeholder_tx(150, 150);
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Package package_too_large;
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auto size_large = GetVirtualTransactionSize(*large_ptx);
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size_t total_size{0};
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while (total_size <= MAX_PACKAGE_SIZE * 1000) {
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package_too_large.push_back(large_ptx);
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total_size += size_large;
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}
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BOOST_CHECK(package_too_large.size() <= MAX_PACKAGE_COUNT);
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auto result_too_large = ProcessNewPackage(m_node.chainman->ActiveChainstate(), *m_node.mempool, package_too_large, /* test_accept */ true);
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BOOST_CHECK(result_too_large.m_state.IsInvalid());
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BOOST_CHECK_EQUAL(result_too_large.m_state.GetResult(), PackageValidationResult::PCKG_POLICY);
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BOOST_CHECK_EQUAL(result_too_large.m_state.GetRejectReason(), "package-too-large");
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// A single, giant transaction submitted through ProcessNewPackage fails on single tx policy.
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CTransactionRef giant_ptx = create_placeholder_tx(999, 999);
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BOOST_CHECK(GetVirtualTransactionSize(*giant_ptx) > MAX_PACKAGE_SIZE * 1000);
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auto result_single_large = ProcessNewPackage(m_node.chainman->ActiveChainstate(), *m_node.mempool, {giant_ptx}, /* test_accept */ true);
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BOOST_CHECK(result_single_large.m_state.IsInvalid());
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BOOST_CHECK_EQUAL(result_single_large.m_state.GetResult(), PackageValidationResult::PCKG_TX);
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BOOST_CHECK_EQUAL(result_single_large.m_state.GetRejectReason(), "transaction failed");
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auto it_giant_tx = result_single_large.m_tx_results.find(giant_ptx->GetWitnessHash());
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BOOST_CHECK(it_giant_tx != result_single_large.m_tx_results.end());
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BOOST_CHECK_EQUAL(it_giant_tx->second.m_state.GetRejectReason(), "tx-size");
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// Check that mempool size hasn't changed.
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BOOST_CHECK_EQUAL(m_node.mempool->size(), initialPoolSize);
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}
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BOOST_AUTO_TEST_SUITE_END()
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