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crate::ix!();
//-------------------------------------------[.cpp/bitcoin/src/test/fuzz/coins_view.cpp]
lazy_static!{
/*
const TestingSetup* g_setup;
const Coin EMPTY_COIN{};
*/
}
pub fn initialize_coins_view() {
todo!();
/*
static const auto testing_setup = MakeNoLogFileContext<const TestingSetup>();
g_setup = testing_setup.get();
*/
}
#[fuzz_test(initializer = "initialize_coins_view")]
fn coins_view() {
todo!();
/*
FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
CCoinsView backend_coins_view;
CCoinsViewCache coins_view_cache{&backend_coins_view};
OutPoint random_out_point;
Coin random_coin;
CMutableTransaction random_mutable_transaction;
while (fuzzed_data_provider.ConsumeBool()) {
CallOneOf(
fuzzed_data_provider,
[&] {
if (random_coin.IsSpent()) {
return;
}
Coin coin = random_coin;
bool expected_code_path = false;
const bool possible_overwrite = fuzzed_data_provider.ConsumeBool();
try {
coins_view_cache.AddCoin(random_out_point, std::move(coin), possible_overwrite);
expected_code_path = true;
} catch (const std::logic_error& e) {
if (e.what() == std::string{"Attempted to overwrite an unspent coin (when possible_overwrite is false)"}) {
assert(!possible_overwrite);
expected_code_path = true;
}
}
assert(expected_code_path);
},
[&] {
(c_void)coins_view_cache.Flush();
},
[&] {
coins_view_cache.SetBestBlock(ConsumeUInt256(fuzzed_data_provider));
},
[&] {
Coin move_to;
(c_void)coins_view_cache.SpendCoin(random_out_point, fuzzed_data_provider.ConsumeBool() ? &move_to : nullptr);
},
[&] {
coins_view_cache.Uncache(random_out_point);
},
[&] {
if (fuzzed_data_provider.ConsumeBool()) {
backend_coins_view = CCoinsView{};
}
coins_view_cache.SetBackend(backend_coins_view);
},
[&] {
const std::optional<OutPoint> opt_out_point = ConsumeDeserializable<OutPoint>(fuzzed_data_provider);
if (!opt_out_point) {
return;
}
random_out_point = *opt_out_point;
},
[&] {
const std::optional<Coin> opt_coin = ConsumeDeserializable<Coin>(fuzzed_data_provider);
if (!opt_coin) {
return;
}
random_coin = *opt_coin;
},
[&] {
const std::optional<CMutableTransaction> opt_mutable_transaction = ConsumeDeserializable<CMutableTransaction>(fuzzed_data_provider);
if (!opt_mutable_transaction) {
return;
}
random_mutable_transaction = *opt_mutable_transaction;
},
[&] {
CCoinsMap coins_map;
while (fuzzed_data_provider.ConsumeBool()) {
CCoinsCacheEntry coins_cache_entry;
coins_cache_entry.flags = fuzzed_data_provider.ConsumeIntegral<unsigned char>();
if (fuzzed_data_provider.ConsumeBool()) {
coins_cache_entry.coin = random_coin;
} else {
const std::optional<Coin> opt_coin = ConsumeDeserializable<Coin>(fuzzed_data_provider);
if (!opt_coin) {
return;
}
coins_cache_entry.coin = *opt_coin;
}
coins_map.emplace(random_out_point, std::move(coins_cache_entry));
}
bool expected_code_path = false;
try {
coins_view_cache.BatchWrite(coins_map, fuzzed_data_provider.ConsumeBool() ? ConsumeUInt256(fuzzed_data_provider) : coins_view_cache.GetBestBlock());
expected_code_path = true;
} catch (const std::logic_error& e) {
if (e.what() == std::string{"FRESH flag misapplied to coin that exists in parent cache"}) {
expected_code_path = true;
}
}
assert(expected_code_path);
});
}
{
const Coin& coin_using_access_coin = coins_view_cache.AccessCoin(random_out_point);
const bool exists_using_access_coin = !(coin_using_access_coin == EMPTY_COIN);
const bool exists_using_have_coin = coins_view_cache.HaveCoin(random_out_point);
const bool exists_using_have_coin_in_cache = coins_view_cache.HaveCoinInCache(random_out_point);
Coin coin_using_get_coin;
const bool exists_using_get_coin = coins_view_cache.GetCoin(random_out_point, coin_using_get_coin);
if (exists_using_get_coin) {
assert(coin_using_get_coin == coin_using_access_coin);
}
assert((exists_using_access_coin && exists_using_have_coin_in_cache && exists_using_have_coin && exists_using_get_coin) ||
(!exists_using_access_coin && !exists_using_have_coin_in_cache && !exists_using_have_coin && !exists_using_get_coin));
const bool exists_using_have_coin_in_backend = backend_coins_view.HaveCoin(random_out_point);
if (exists_using_have_coin_in_backend) {
assert(exists_using_have_coin);
}
Coin coin_using_backend_get_coin;
if (backend_coins_view.GetCoin(random_out_point, coin_using_backend_get_coin)) {
assert(exists_using_have_coin_in_backend);
assert(coin_using_get_coin == coin_using_backend_get_coin);
} else {
assert(!exists_using_have_coin_in_backend);
}
}
{
bool expected_code_path = false;
try {
(c_void)coins_view_cache.Cursor();
} catch (const std::logic_error&) {
expected_code_path = true;
}
assert(expected_code_path);
(c_void)coins_view_cache.DynamicMemoryUsage();
(c_void)coins_view_cache.EstimateSize();
(c_void)coins_view_cache.GetBestBlock();
(c_void)coins_view_cache.GetCacheSize();
(c_void)coins_view_cache.GetHeadBlocks();
(c_void)coins_view_cache.HaveInputs(CTransaction{random_mutable_transaction});
}
{
std::unique_ptr<CCoinsViewCursor> coins_view_cursor = backend_coins_view.Cursor();
assert(!coins_view_cursor);
(c_void)backend_coins_view.EstimateSize();
(c_void)backend_coins_view.GetBestBlock();
(c_void)backend_coins_view.GetHeadBlocks();
}
if (fuzzed_data_provider.ConsumeBool()) {
CallOneOf(
fuzzed_data_provider,
[&] {
const CTransaction transaction{random_mutable_transaction};
bool is_spent = false;
for (const CTxOut& tx_out : transaction.vout) {
if (Coin{tx_out, 0, transaction.IsCoinBase()}.IsSpent()) {
is_spent = true;
}
}
if (is_spent) {
// Avoid:
// coins.cpp:69: c_void CCoinsViewCache::AddCoin(const OutPoint &, Coin &&, bool): Assertion `!coin.IsSpent()' failed.
return;
}
bool expected_code_path = false;
const int height = fuzzed_data_provider.ConsumeIntegral<int>();
const bool possible_overwrite = fuzzed_data_provider.ConsumeBool();
try {
AddCoins(coins_view_cache, transaction, height, possible_overwrite);
expected_code_path = true;
} catch (const std::logic_error& e) {
if (e.what() == std::string{"Attempted to overwrite an unspent coin (when possible_overwrite is false)"}) {
assert(!possible_overwrite);
expected_code_path = true;
}
}
assert(expected_code_path);
},
[&] {
(c_void)AreInputsStandard(CTransaction{random_mutable_transaction}, coins_view_cache, false);
(c_void)AreInputsStandard(CTransaction{random_mutable_transaction}, coins_view_cache, true);
},
[&] {
TxValidationState state;
CAmount tx_fee_out;
const CTransaction transaction{random_mutable_transaction};
if (ContainsSpentInput(transaction, coins_view_cache)) {
// Avoid:
// consensus/tx_verify.cpp:171: bool consensus::CheckTxInputs(const CTransaction &, TxValidationState &, const CCoinsViewCache &, int, CAmount &): Assertion `!coin.IsSpent()' failed.
return;
}
TxValidationState dummy;
if (!CheckTransaction(transaction, dummy)) {
// It is not allowed to call CheckTxInputs if CheckTransaction failed
return;
}
if (consensus::CheckTxInputs(transaction, state, coins_view_cache, fuzzed_data_provider.ConsumeIntegralInRange<int>(0, std::numeric_limits<int>::max()), tx_fee_out)) {
assert(MoneyRange(tx_fee_out));
}
},
[&] {
const CTransaction transaction{random_mutable_transaction};
if (ContainsSpentInput(transaction, coins_view_cache)) {
// Avoid:
// consensus/tx_verify.cpp:130: unsigned int GetP2SHSigOpCount(const CTransaction &, const CCoinsViewCache &): Assertion `!coin.IsSpent()' failed.
return;
}
(c_void)GetP2SHSigOpCount(transaction, coins_view_cache);
},
[&] {
const CTransaction transaction{random_mutable_transaction};
if (ContainsSpentInput(transaction, coins_view_cache)) {
// Avoid:
// consensus/tx_verify.cpp:130: unsigned int GetP2SHSigOpCount(const CTransaction &, const CCoinsViewCache &): Assertion `!coin.IsSpent()' failed.
return;
}
const auto flags{fuzzed_data_provider.ConsumeIntegral<uint32_t>()};
if (!transaction.vin.empty() && (flags & SCRIPT_VERIFY_WITNESS) != 0 && (flags & SCRIPT_VERIFY_P2SH) == 0) {
// Avoid:
// script/interpreter.cpp:1705: size_t CountWitnessSigOps(const CScript &, const CScript &, const CScriptWitness *, unsigned int): Assertion `(flags & SCRIPT_VERIFY_P2SH) != 0' failed.
return;
}
(c_void)GetTransactionSigOpCost(transaction, coins_view_cache, flags);
},
[&] {
CCoinsStats stats{CoinStatsHashType::HASH_SERIALIZED};
bool expected_code_path = false;
try {
(c_void)GetUTXOStats(&coins_view_cache,
[&]() { LOCK(::cs_main); return std::ref(g_setup->m_node.chainman->m_blockman) }()
, stats);
} catch (const std::logic_error&) {
expected_code_path = true;
}
assert(expected_code_path);
},
[&] {
(c_void)IsWitnessStandard(CTransaction{random_mutable_transaction}, coins_view_cache);
});
}
*/
}