@Test
public void oneTx() throws Exception {

    // Check basic tx serialization.
    BigInteger v1 = Utils.toNanoCoins(1, 0);
    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(1, 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.longValue());
}