public class MemoryPoolTest {
private NetworkParameters params = NetworkParameters.unitTests();
private Transaction tx1, tx2;
private PeerAddress address1, address2, address3;
@Before
public void setup() throws Exception {
BriefLogFormatter.init();
tx1 = TestUtils.createFakeTx(params, Utils.toNanoCoins(1, 0), new ECKey().toAddress(params));
tx2 = new Transaction(params, tx1.bitcoinSerialize());
address1 = new PeerAddress(InetAddress.getByAddress(new byte[] {127, 0, 0, 1}));
address2 = new PeerAddress(InetAddress.getByAddress(new byte[] {127, 0, 0, 2}));
address3 = new PeerAddress(InetAddress.getByAddress(new byte[] {127, 0, 0, 3}));
}
@Test
public void canonicalInstance() throws Exception {
MemoryPool pool = new MemoryPool();
// Check that if we repeatedly send it the same transaction but with different objects, we get
// back the same
// canonical instance with the confidences update.
assertEquals(0, pool.numBroadcastPeers(tx1.getHash()));
assertEquals(tx1, pool.seen(tx1, address1));
assertEquals(1, tx1.getConfidence().numBroadcastPeers());
assertEquals(1, pool.numBroadcastPeers(tx1.getHash()));
assertEquals(tx1, pool.seen(tx2, address2));
assertEquals(2, tx1.getConfidence().numBroadcastPeers());
assertEquals(2, pool.numBroadcastPeers(tx1.getHash()));
assertEquals(tx1, pool.get(tx1.getHash()));
}
@Test
public void invAndDownload() throws Exception {
MemoryPool pool = new MemoryPool();
// Base case: we see a transaction announced twice and then download it. The count is in the
// confidence object.
assertEquals(0, pool.numBroadcastPeers(tx1.getHash()));
pool.seen(tx1.getHash(), address1);
assertEquals(1, pool.numBroadcastPeers(tx1.getHash()));
assertTrue(pool.maybeWasSeen(tx1.getHash()));
pool.seen(tx1.getHash(), address2);
assertEquals(2, pool.numBroadcastPeers(tx1.getHash()));
Transaction t = pool.seen(tx1, address1);
assertEquals(2, t.getConfidence().numBroadcastPeers());
// And now we see another inv.
pool.seen(tx1.getHash(), address3);
assertEquals(3, t.getConfidence().numBroadcastPeers());
assertEquals(3, pool.numBroadcastPeers(tx1.getHash()));
}
}
@Test
public void testStorage() throws Exception {
File temp = File.createTempFile("bitcoinj-test", null, null);
System.out.println(temp.getAbsolutePath());
temp.deleteOnExit();
NetworkParameters params = NetworkParameters.unitTests();
Address to = new ECKey().toAddress(params);
BoundedOverheadBlockStore store = new BoundedOverheadBlockStore(params, temp);
// Check the first block in a new store is the genesis block.
StoredBlock genesis = store.getChainHead();
assertEquals(params.genesisBlock, genesis.getHeader());
// Build a new block.
StoredBlock b1 = genesis.build(genesis.getHeader().createNextBlock(to).cloneAsHeader());
store.put(b1);
store.setChainHead(b1);
// Check we can get it back out again if we rebuild the store object.
store = new BoundedOverheadBlockStore(params, temp);
StoredBlock b2 = store.get(b1.getHeader().getHash());
assertEquals(b1, b2);
// Check the chain head was stored correctly also.
assertEquals(b1, store.getChainHead());
}