private static Block createGenesis(NetworkParameters n) {
Block genesisBlock = new Block(n);
Transaction t = new Transaction(n);
try {
// A script containing the difficulty bits and the following message:
//
// "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks"
byte[] bytes =
Utils.HEX.decode(
"04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73");
t.addInput(new TransactionInput(n, t, bytes));
ByteArrayOutputStream scriptPubKeyBytes = new ByteArrayOutputStream();
Script.writeBytes(
scriptPubKeyBytes,
Utils.HEX.decode(
"04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f"));
scriptPubKeyBytes.write(ScriptOpCodes.OP_CHECKSIG);
t.addOutput(new TransactionOutput(n, t, FIFTY_COINS, scriptPubKeyBytes.toByteArray()));
} catch (Exception e) {
// Cannot happen.
throw new RuntimeException(e);
}
genesisBlock.addTransaction(t);
return genesisBlock;
}
@Test
public void raiseFeeTx() throws Exception {
// Check basic tx serialization.
Coin v1 = COIN;
Transaction t1 = createFakeTx(params, v1, myAddress);
t1.setPurpose(Purpose.RAISE_FEE);
myWallet.receivePending(t1, null);
Wallet wallet1 = roundTrip(myWallet);
Transaction t1copy = wallet1.getTransaction(t1.getHash());
assertEquals(Purpose.RAISE_FEE, t1copy.getPurpose());
}
@Test
public void doubleSpend() throws Exception {
// Check that we can serialize double spends correctly, as this is a slightly tricky case.
FakeTxBuilder.DoubleSpends doubleSpends =
FakeTxBuilder.createFakeDoubleSpendTxns(params, myAddress);
// t1 spends to our wallet.
myWallet.receivePending(doubleSpends.t1, null);
// t2 rolls back t1 and spends somewhere else.
myWallet.receiveFromBlock(doubleSpends.t2, null, BlockChain.NewBlockType.BEST_CHAIN, 0);
Wallet wallet1 = roundTrip(myWallet);
assertEquals(1, wallet1.getTransactions(true).size());
Transaction t1 = wallet1.getTransaction(doubleSpends.t1.getHash());
assertEquals(ConfidenceType.DEAD, t1.getConfidence().getConfidenceType());
assertEquals(Coin.ZERO, wallet1.getBalance());
// TODO: Wallet should store overriding transactions even if they are not wallet-relevant.
// assertEquals(doubleSpends.t2, t1.getConfidence().getOverridingTransaction());
}
@Test
public void coinbaseTxns() throws Exception {
// Covers issue 420 where the outpoint index of a coinbase tx input was being mis-serialized.
Block b =
params
.getGenesisBlock()
.createNextBlockWithCoinbase(
Block.BLOCK_VERSION_GENESIS,
myKey.getPubKey(),
FIFTY_COINS,
Block.BLOCK_HEIGHT_GENESIS);
Transaction coinbase = b.getTransactions().get(0);
assertTrue(coinbase.isCoinBase());
BlockChain chain = new BlockChain(params, myWallet, new MemoryBlockStore(params));
assertTrue(chain.add(b));
// Wallet now has a coinbase tx in it.
assertEquals(1, myWallet.getTransactions(true).size());
assertTrue(myWallet.getTransaction(coinbase.getHash()).isCoinBase());
Wallet wallet2 = roundTrip(myWallet);
assertEquals(1, wallet2.getTransactions(true).size());
assertTrue(wallet2.getTransaction(coinbase.getHash()).isCoinBase());
}
@Test
public void peerGroupWalletIntegration() throws Exception {
// Make sure we can create spends, and that they are announced. Then do the same with offline
// mode.
// Set up connections and block chain.
VersionMessage ver = new VersionMessage(params, 2);
ver.localServices = VersionMessage.NODE_NETWORK;
InboundMessageQueuer p1 = connectPeer(1, ver);
InboundMessageQueuer p2 = connectPeer(2);
// Send ourselves a bit of money.
Block b1 = FakeTxBuilder.makeSolvedTestBlock(blockStore, address);
inbound(p1, b1);
pingAndWait(p1);
assertNull(outbound(p1));
assertEquals(FIFTY_COINS, wallet.getBalance());
// Check that the wallet informs us of changes in confidence as the transaction ripples across
// the network.
final Transaction[] transactions = new Transaction[1];
wallet.addEventListener(
new AbstractWalletEventListener() {
@Override
public void onTransactionConfidenceChanged(Wallet wallet, Transaction tx) {
transactions[0] = tx;
}
});
// Now create a spend, and expect the announcement on p1.
Address dest = new ECKey().toAddress(params);
Wallet.SendResult sendResult = wallet.sendCoins(peerGroup, dest, COIN);
assertNotNull(sendResult.tx);
Threading.waitForUserCode();
assertFalse(sendResult.broadcastComplete.isDone());
assertEquals(transactions[0], sendResult.tx);
assertEquals(0, transactions[0].getConfidence().numBroadcastPeers());
transactions[0] = null;
Transaction t1;
{
peerGroup.waitForJobQueue();
Message m = outbound(p1);
// Hack: bloom filters are recalculated asynchronously to sending transactions to avoid lock
// inversion, so we might or might not get the filter/mempool message first or second.
while (!(m instanceof Transaction)) m = outbound(p1);
t1 = (Transaction) m;
}
assertNotNull(t1);
// 49 BTC in change.
assertEquals(valueOf(49, 0), t1.getValueSentToMe(wallet));
// The future won't complete until it's heard back from the network on p2.
InventoryMessage inv = new InventoryMessage(params);
inv.addTransaction(t1);
inbound(p2, inv);
pingAndWait(p2);
Threading.waitForUserCode();
assertTrue(sendResult.broadcastComplete.isDone());
assertEquals(transactions[0], sendResult.tx);
assertEquals(1, transactions[0].getConfidence().numBroadcastPeers());
// Confirm it.
Block b2 = FakeTxBuilder.createFakeBlock(blockStore, t1).block;
inbound(p1, b2);
pingAndWait(p1);
assertNull(outbound(p1));
// Do the same thing with an offline transaction.
peerGroup.removeWallet(wallet);
Wallet.SendRequest req = Wallet.SendRequest.to(dest, valueOf(2, 0));
req.ensureMinRequiredFee = false;
Transaction t3 = checkNotNull(wallet.sendCoinsOffline(req));
assertNull(outbound(p1)); // Nothing sent.
// Add the wallet to the peer group (simulate initialization). Transactions should be announced.
peerGroup.addWallet(wallet);
// Transaction announced to the first peer. No extra Bloom filter because no change address was
// needed.
assertEquals(t3.getHash(), ((Transaction) outbound(p1)).getHash());
}
@Test
public void testAppearedAtChainHeightDepthAndWorkDone() throws Exception {
// Test the TransactionConfidence appearedAtChainHeight, depth and workDone field are stored.
BlockChain chain = new BlockChain(params, myWallet, new MemoryBlockStore(params));
final ArrayList<Transaction> txns = new ArrayList<Transaction>(2);
myWallet.addEventListener(
new AbstractWalletEventListener() {
@Override
public void onCoinsReceived(
Wallet wallet, Transaction tx, Coin prevBalance, Coin newBalance) {
txns.add(tx);
}
});
// Start by building two blocks on top of the genesis block.
Block b1 = params.getGenesisBlock().createNextBlock(myAddress);
BigInteger work1 = b1.getWork();
assertTrue(work1.signum() > 0);
Block b2 = b1.createNextBlock(myAddress);
BigInteger work2 = b2.getWork();
assertTrue(work2.signum() > 0);
assertTrue(chain.add(b1));
assertTrue(chain.add(b2));
// We now have the following chain:
// genesis -> b1 -> b2
// Check the transaction confidence levels are correct before wallet roundtrip.
Threading.waitForUserCode();
assertEquals(2, txns.size());
TransactionConfidence confidence0 = txns.get(0).getConfidence();
TransactionConfidence confidence1 = txns.get(1).getConfidence();
assertEquals(1, confidence0.getAppearedAtChainHeight());
assertEquals(2, confidence1.getAppearedAtChainHeight());
assertEquals(2, confidence0.getDepthInBlocks());
assertEquals(1, confidence1.getDepthInBlocks());
// Roundtrip the wallet and check it has stored the depth and workDone.
Wallet rebornWallet = roundTrip(myWallet);
Set<Transaction> rebornTxns = rebornWallet.getTransactions(false);
assertEquals(2, rebornTxns.size());
// The transactions are not guaranteed to be in the same order so sort them to be in chain
// height order if required.
Iterator<Transaction> it = rebornTxns.iterator();
Transaction txA = it.next();
Transaction txB = it.next();
Transaction rebornTx0, rebornTx1;
if (txA.getConfidence().getAppearedAtChainHeight() == 1) {
rebornTx0 = txA;
rebornTx1 = txB;
} else {
rebornTx0 = txB;
rebornTx1 = txA;
}
TransactionConfidence rebornConfidence0 = rebornTx0.getConfidence();
TransactionConfidence rebornConfidence1 = rebornTx1.getConfidence();
assertEquals(1, rebornConfidence0.getAppearedAtChainHeight());
assertEquals(2, rebornConfidence1.getAppearedAtChainHeight());
assertEquals(2, rebornConfidence0.getDepthInBlocks());
assertEquals(1, rebornConfidence1.getDepthInBlocks());
}
@Test
public void oneTx() throws Exception {
// Check basic tx serialization.
Coin v1 = COIN;
Transaction t1 = createFakeTx(params, v1, myAddress);
t1.getConfidence().markBroadcastBy(new PeerAddress(InetAddress.getByName("1.2.3.4")));
t1.getConfidence().markBroadcastBy(new PeerAddress(InetAddress.getByName("5.6.7.8")));
t1.getConfidence().setSource(TransactionConfidence.Source.NETWORK);
myWallet.receivePending(t1, null);
Wallet wallet1 = roundTrip(myWallet);
assertEquals(1, wallet1.getTransactions(true).size());
assertEquals(v1, wallet1.getBalance(Wallet.BalanceType.ESTIMATED));
Transaction t1copy = wallet1.getTransaction(t1.getHash());
assertArrayEquals(t1.bitcoinSerialize(), t1copy.bitcoinSerialize());
assertEquals(2, t1copy.getConfidence().numBroadcastPeers());
assertEquals(TransactionConfidence.Source.NETWORK, t1copy.getConfidence().getSource());
Protos.Wallet walletProto = new WalletProtobufSerializer().walletToProto(myWallet);
assertEquals(Protos.Key.Type.ORIGINAL, walletProto.getKey(0).getType());
assertEquals(0, walletProto.getExtensionCount());
assertEquals(1, walletProto.getTransactionCount());
assertEquals(6, walletProto.getKeyCount());
Protos.Transaction t1p = walletProto.getTransaction(0);
assertEquals(0, t1p.getBlockHashCount());
assertArrayEquals(t1.getHash().getBytes(), t1p.getHash().toByteArray());
assertEquals(Protos.Transaction.Pool.PENDING, t1p.getPool());
assertFalse(t1p.hasLockTime());
assertFalse(t1p.getTransactionInput(0).hasSequence());
assertArrayEquals(
t1.getInputs().get(0).getOutpoint().getHash().getBytes(),
t1p.getTransactionInput(0).getTransactionOutPointHash().toByteArray());
assertEquals(0, t1p.getTransactionInput(0).getTransactionOutPointIndex());
assertEquals(t1p.getTransactionOutput(0).getValue(), v1.value);
}