@Test
public void testReceiveCoinbaseTransaction() throws Exception {
// Block 169482 (hash 0000000000000756935f1ee9d5987857b604046f846d3df56d024cdb5f368665)
// contains coinbase transactions that are mining pool shares.
// The private key MINERS_KEY is used to check transactions are received by a wallet correctly.
// The address for this private key is 1GqtGtn4fctXuKxsVzRPSLmYWN1YioLi9y.
final String MINING_PRIVATE_KEY = "5JDxPrBRghF1EvSBjDigywqfmAjpHPmTJxYtQTYJxJRHLLQA4mG";
final long BLOCK_NONCE = 3973947400L;
final Coin BALANCE_AFTER_BLOCK = Coin.valueOf(22223642);
final NetworkParameters PARAMS = MainNetParams.get();
Block block169482 =
PARAMS
.getDefaultSerializer()
.makeBlock(ByteStreams.toByteArray(getClass().getResourceAsStream("block169482.dat")));
// Check block.
assertNotNull(block169482);
block169482.verify(169482, EnumSet.noneOf(Block.VerifyFlag.class));
assertEquals(BLOCK_NONCE, block169482.getNonce());
StoredBlock storedBlock =
new StoredBlock(block169482, BigInteger.ONE, 169482); // Nonsense work - not used in test.
// Create a wallet contain the miner's key that receives a spend from a coinbase.
ECKey miningKey = DumpedPrivateKey.fromBase58(PARAMS, MINING_PRIVATE_KEY).getKey();
assertNotNull(miningKey);
Context context = new Context(PARAMS);
Wallet wallet = new Wallet(context);
wallet.importKey(miningKey);
// Initial balance should be zero by construction.
assertEquals(Coin.ZERO, wallet.getBalance());
// Give the wallet the first transaction in the block - this is the coinbase tx.
List<Transaction> transactions = block169482.getTransactions();
assertNotNull(transactions);
wallet.receiveFromBlock(transactions.get(0), storedBlock, NewBlockType.BEST_CHAIN, 0);
// Coinbase transaction should have been received successfully but be unavailable to spend (too
// young).
assertEquals(BALANCE_AFTER_BLOCK, wallet.getBalance(BalanceType.ESTIMATED));
assertEquals(Coin.ZERO, wallet.getBalance(BalanceType.AVAILABLE));
}
@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());
}