@Test
public void bloom() throws Exception {
ECKey key1 = group.freshKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);
ECKey key2 = new ECKey();
BloomFilter filter =
group.getBloomFilter(
group.getBloomFilterElementCount(), 0.001, (long) (Math.random() * Long.MAX_VALUE));
assertTrue(filter.contains(key1.getPubKeyHash()));
assertTrue(filter.contains(key1.getPubKey()));
assertFalse(filter.contains(key2.getPubKey()));
// Check that the filter contains the lookahead buffer and threshold zone.
for (int i = 0; i < LOOKAHEAD_SIZE + group.getLookaheadThreshold(); i++) {
ECKey k = group.freshKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);
assertTrue(filter.contains(k.getPubKeyHash()));
}
// We ran ahead of the lookahead buffer.
assertFalse(filter.contains(group.freshKey(KeyChain.KeyPurpose.RECEIVE_FUNDS).getPubKey()));
group.importKeys(key2);
filter =
group.getBloomFilter(
group.getBloomFilterElementCount(), 0.001, (long) (Math.random() * Long.MAX_VALUE));
assertTrue(filter.contains(key1.getPubKeyHash()));
assertTrue(filter.contains(key1.getPubKey()));
assertTrue(filter.contains(key2.getPubKey()));
}
@Test
public void bloomFilterForMarriedChains() throws Exception {
group = createMarriedKeyChainGroup();
int bufferSize = group.getLookaheadSize() + group.getLookaheadThreshold();
int expected = bufferSize * 2 /* chains */ * 2 /* elements */;
assertEquals(expected, group.getBloomFilterElementCount());
Address address1 = group.freshAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS);
assertEquals(expected, group.getBloomFilterElementCount());
BloomFilter filter =
group.getBloomFilter(expected + 2, 0.001, (long) (Math.random() * Long.MAX_VALUE));
assertTrue(filter.contains(address1.getHash160()));
Address address2 = group.freshAddress(KeyChain.KeyPurpose.CHANGE);
assertTrue(filter.contains(address2.getHash160()));
// Check that the filter contains the lookahead buffer.
for (int i = 0; i < bufferSize - 1 /* issued address */; i++) {
Address address = group.freshAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS);
assertTrue("key " + i, filter.contains(address.getHash160()));
}
// We ran ahead of the lookahead buffer.
assertFalse(
filter.contains(group.freshAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS).getHash160()));
}
