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test: add tests for miniscript GetWitnessSize

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This commit is contained in:
Pieter Wuille 2023-10-13 14:57:03 -04:00
parent 7ed2b2d430
commit 8be9851408
2 changed files with 8 additions and 0 deletions
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4
src/test/fuzz/miniscript.cpp
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@ -70,6 +70,7 @@ struct TestData {
sig.push_back(1); // SIGHASH_ALL
dummy_sigs.insert({pubkey, {sig, i & 1}});
assert(privkey.SignSchnorr(MESSAGE_HASH, schnorr_sig, nullptr, EMPTY_AUX));
schnorr_sig.push_back(1); // Maximally-sized signature has sighash byte
schnorr_sigs.emplace(XOnlyPubKey{pubkey}, std::make_pair(std::move(schnorr_sig), i & 1));
std::vector<unsigned char> hash;
@ -1119,6 +1120,9 @@ void TestNode(const MsCtx script_ctx, const NodeRef& node, FuzzedDataProvider& p
// If a non-malleable satisfaction exists, the malleable one must also exist, and be identical to it.
assert(mal_success);
assert(stack_nonmal == stack_mal);
// Compute witness size (excluding script push, control block, and witness count encoding).
const size_t wit_size = GetSerializeSize(stack_nonmal, PROTOCOL_VERSION) - GetSizeOfCompactSize(stack_nonmal.size());
assert(wit_size <= *node->GetWitnessSize());
// Test non-malleable satisfaction.
witness_nonmal.stack.insert(witness_nonmal.stack.end(), std::make_move_iterator(stack_nonmal.begin()), std::make_move_iterator(stack_nonmal.end()));

4
src/test/miniscript_tests.cpp
View File

@ -77,6 +77,7 @@ struct TestData {
sig.push_back(1); // sighash byte
signatures.emplace(pubkey, sig);
BOOST_CHECK(key.SignSchnorr(MESSAGE_HASH, schnorr_sig, nullptr, EMPTY_AUX));
schnorr_sig.push_back(1); // Maximally sized Schnorr sigs have a sighash byte.
schnorr_signatures.emplace(XOnlyPubKey{pubkey}, schnorr_sig);
// Compute various hashes
@ -367,6 +368,8 @@ void TestSatisfy(const KeyConverter& converter, const std::string& testcase, con
// Run non-malleable satisfaction algorithm.
CScriptWitness witness_nonmal;
const bool nonmal_success = node->Satisfy(satisfier, witness_nonmal.stack, true) == miniscript::Availability::YES;
// Compute witness size (excluding script push, control block, and witness count encoding).
const size_t wit_size = GetSerializeSize(witness_nonmal.stack, PROTOCOL_VERSION) - GetSizeOfCompactSize(witness_nonmal.stack.size());
SatisfactionToWitness(converter.MsContext(), witness_nonmal, script, builder);
if (nonmal_success) {
@ -378,6 +381,7 @@ void TestSatisfy(const KeyConverter& converter, const std::string& testcase, con
// If a non-malleable satisfaction exists, the malleable one must also exist, and be identical to it.
BOOST_CHECK(mal_success);
BOOST_CHECK(witness_nonmal.stack == witness_mal.stack);
assert(wit_size <= *node->GetWitnessSize());
// Test non-malleable satisfaction.
ScriptError serror;