TEST(wallet_tests, cached_witnesses_empty_chain) {
TestWallet wallet;
auto sk = libzcash::SpendingKey::random();
wallet.AddSpendingKey(sk);
auto wtx = GetValidReceive(sk, 10, true);
auto note = GetNote(sk, wtx, 0, 0);
auto note2 = GetNote(sk, wtx, 0, 1);
auto nullifier = note.nullifier(sk);
auto nullifier2 = note2.nullifier(sk);
mapNoteData_t noteData;
JSOutPoint jsoutpt {wtx.GetHash(), 0, 0};
JSOutPoint jsoutpt2 {wtx.GetHash(), 0, 1};
CNoteData nd {sk.address(), nullifier};
CNoteData nd2 {sk.address(), nullifier2};
noteData[jsoutpt] = nd;
noteData[jsoutpt2] = nd2;
wtx.SetNoteData(noteData);
std::vector<JSOutPoint> notes {jsoutpt, jsoutpt2};
std::vector<boost::optional<ZCIncrementalWitness>> witnesses;
uint256 anchor;
wallet.GetNoteWitnesses(notes, witnesses, anchor);
EXPECT_FALSE((bool) witnesses[0]);
EXPECT_FALSE((bool) witnesses[1]);
wallet.AddToWallet(wtx, true, NULL);
witnesses.clear();
wallet.GetNoteWitnesses(notes, witnesses, anchor);
EXPECT_FALSE((bool) witnesses[0]);
EXPECT_FALSE((bool) witnesses[1]);
CBlock block;
block.vtx.push_back(wtx);
CBlockIndex index(block);
ZCIncrementalMerkleTree tree;
wallet.IncrementNoteWitnesses(&index, &block, tree);
witnesses.clear();
wallet.GetNoteWitnesses(notes, witnesses, anchor);
EXPECT_TRUE((bool) witnesses[0]);
EXPECT_TRUE((bool) witnesses[1]);
// Until #1302 is implemented, this should triggger an assertion
EXPECT_DEATH(wallet.DecrementNoteWitnesses(&index),
"Assertion `nWitnessCacheSize > 0' failed.");
}
TEST(wallet_tests, cached_witnesses_chain_tip) {
TestWallet wallet;
uint256 anchor1;
CBlock block1;
ZCIncrementalMerkleTree tree;
auto sk = libzcash::SpendingKey::random();
wallet.AddSpendingKey(sk);
{
// First transaction (case tested in _empty_chain)
auto wtx = GetValidReceive(sk, 10, true);
auto note = GetNote(sk, wtx, 0, 1);
auto nullifier = note.nullifier(sk);
mapNoteData_t noteData;
JSOutPoint jsoutpt {wtx.GetHash(), 0, 1};
CNoteData nd {sk.address(), nullifier};
noteData[jsoutpt] = nd;
wtx.SetNoteData(noteData);
wallet.AddToWallet(wtx, true, NULL);
std::vector<JSOutPoint> notes {jsoutpt};
std::vector<boost::optional<ZCIncrementalWitness>> witnesses;
// First block (case tested in _empty_chain)
block1.vtx.push_back(wtx);
wallet.IncrementNoteWitnesses(NULL, &block1, tree);
// Called to fetch anchor
wallet.GetNoteWitnesses(notes, witnesses, anchor1);
}
{
// Second transaction
auto wtx = GetValidReceive(sk, 50, true);
auto note = GetNote(sk, wtx, 0, 1);
auto nullifier = note.nullifier(sk);
mapNoteData_t noteData;
JSOutPoint jsoutpt {wtx.GetHash(), 0, 1};
CNoteData nd {sk.address(), nullifier};
noteData[jsoutpt] = nd;
wtx.SetNoteData(noteData);
wallet.AddToWallet(wtx, true, NULL);
std::vector<JSOutPoint> notes {jsoutpt};
std::vector<boost::optional<ZCIncrementalWitness>> witnesses;
uint256 anchor2;
wallet.GetNoteWitnesses(notes, witnesses, anchor2);
EXPECT_FALSE((bool) witnesses[0]);
// Second block
CBlock block2;
block2.hashPrevBlock = block1.GetHash();
block2.vtx.push_back(wtx);
ZCIncrementalMerkleTree tree2 {tree};
wallet.IncrementNoteWitnesses(NULL, &block2, tree2);
witnesses.clear();
wallet.GetNoteWitnesses(notes, witnesses, anchor2);
EXPECT_TRUE((bool) witnesses[0]);
EXPECT_NE(anchor1, anchor2);
// Decrementing should give us the previous anchor
uint256 anchor3;
wallet.DecrementNoteWitnesses();
witnesses.clear();
wallet.GetNoteWitnesses(notes, witnesses, anchor3);
EXPECT_FALSE((bool) witnesses[0]);
// Should not equal first anchor because none of these notes had witnesses
EXPECT_NE(anchor1, anchor3);
// Re-incrementing with the same block should give the same result
uint256 anchor4;
wallet.IncrementNoteWitnesses(NULL, &block2, tree);
witnesses.clear();
wallet.GetNoteWitnesses(notes, witnesses, anchor4);
EXPECT_TRUE((bool) witnesses[0]);
EXPECT_EQ(anchor2, anchor4);
}
}
TEST(wallet_tests, CachedWitnessesDecrementFirst) {
TestWallet wallet;
uint256 anchor2;
CBlock block2;
CBlockIndex index2(block2);
ZCIncrementalMerkleTree tree;
auto sk = libzcash::SpendingKey::random();
wallet.AddSpendingKey(sk);
{
// First transaction (case tested in _empty_chain)
auto wtx = GetValidReceive(sk, 10, true);
auto note = GetNote(sk, wtx, 0, 1);
auto nullifier = note.nullifier(sk);
mapNoteData_t noteData;
JSOutPoint jsoutpt {wtx.GetHash(), 0, 1};
CNoteData nd {sk.address(), nullifier};
noteData[jsoutpt] = nd;
wtx.SetNoteData(noteData);
wallet.AddToWallet(wtx, true, NULL);
// First block (case tested in _empty_chain)
CBlock block1;
block1.vtx.push_back(wtx);
CBlockIndex index1(block1);
index1.nHeight = 1;
wallet.IncrementNoteWitnesses(&index1, &block1, tree);
}
{
// Second transaction (case tested in _chain_tip)
auto wtx = GetValidReceive(sk, 50, true);
auto note = GetNote(sk, wtx, 0, 1);
auto nullifier = note.nullifier(sk);
mapNoteData_t noteData;
JSOutPoint jsoutpt {wtx.GetHash(), 0, 1};
CNoteData nd {sk.address(), nullifier};
noteData[jsoutpt] = nd;
wtx.SetNoteData(noteData);
wallet.AddToWallet(wtx, true, NULL);
std::vector<JSOutPoint> notes {jsoutpt};
std::vector<boost::optional<ZCIncrementalWitness>> witnesses;
// Second block (case tested in _chain_tip)
block2.vtx.push_back(wtx);
index2.nHeight = 2;
wallet.IncrementNoteWitnesses(&index2, &block2, tree);
// Called to fetch anchor
wallet.GetNoteWitnesses(notes, witnesses, anchor2);
}
{
// Third transaction - never mined
auto wtx = GetValidReceive(sk, 20, true);
auto note = GetNote(sk, wtx, 0, 1);
auto nullifier = note.nullifier(sk);
mapNoteData_t noteData;
JSOutPoint jsoutpt {wtx.GetHash(), 0, 1};
CNoteData nd {sk.address(), nullifier};
noteData[jsoutpt] = nd;
wtx.SetNoteData(noteData);
wallet.AddToWallet(wtx, true, NULL);
std::vector<JSOutPoint> notes {jsoutpt};
std::vector<boost::optional<ZCIncrementalWitness>> witnesses;
uint256 anchor3;
wallet.GetNoteWitnesses(notes, witnesses, anchor3);
EXPECT_FALSE((bool) witnesses[0]);
// Decrementing (before the transaction has ever seen an increment)
// should give us the previous anchor
uint256 anchor4;
wallet.DecrementNoteWitnesses(&index2);
witnesses.clear();
wallet.GetNoteWitnesses(notes, witnesses, anchor4);
EXPECT_FALSE((bool) witnesses[0]);
// Should not equal second anchor because none of these notes had witnesses
EXPECT_NE(anchor2, anchor4);
// Re-incrementing with the same block should give the same result
uint256 anchor5;
wallet.IncrementNoteWitnesses(&index2, &block2, tree);
witnesses.clear();
wallet.GetNoteWitnesses(notes, witnesses, anchor5);
EXPECT_FALSE((bool) witnesses[0]);
EXPECT_EQ(anchor3, anchor5);
}
}
