def test_mempool_observer(self):
connection = Mock()
from pycoin.tx.Tx import Tx
tx = Tx.from_hex(
'01000000000101112a649fd72656cf572259cb7cb61bd31ccdbdf0944070e73401565affbe629d0100000000ffffffff02608'
'de2110000000017a914d52b516c1a094462959ed6facebb94429d2cebf487d3135b0b00000000220020701a8d401c84fb13e6'
'baf169d59684e17abd9fa216c8cc5b9fc63d622ff8c58d0400473044022006b149e0cf031f57fd443bd1210b381e9b1b15094'
'57ba1f49e48b803696f56e802203d66bd974ad3ac5b7591cc84e706b78d139c61e2bf1995a89c4dc0758984a2b70148304502'
'2100fe7275d601080e1870517774a3ad6accaa7f8ad144addec3251e98685d4fefad02207792c2b0ed6ab42ed2ba6d12e6bd3'
'4db8c6f4ac6f15e604f70ea85a735c450b1016952210375e00eb72e29da82b89367947f29ef34afb75e8654f6ea368e0acdfd'
'92976b7c2103a1b26313f430c4b15bb1fdce663207659d8cac749a0e53d70eff01874496feff2103c96d495bfdd5ba4145e3e'
'046fee45e84a8a48ad05bd8dbb395c011a32cf9f88053ae00000000')
self.loop.run_until_complete(
self.sut.on_transaction(connection, {'tx': tx}))
self.assertEqual(tx.w_id(),
[x for x in self.mempool_repository.get_txids()][0])
self.repository.blockchain.get_transactions_by_block_hash.return_value = [], None
block = Block(1,
b'0' * 32,
merkle_root=merkle([tx.hash()]),
timestamp=123456789,
difficulty=3000000,
nonce=1 * 137)
block.txs.append(tx)
as_bin = block.as_bin()
Block.from_bin(as_bin)
block_header = {'block_hash': block.id()}
self.batcher_factory.add_peer.return_value = async_coro(True)
self.batcher_factory.inv_item_to_future.return_value = block.as_bin()
mempool_response = self.mempool_repository.get_raw_mempool(True)
self.assertEqual(
{
'41867301a6cff5c47951aa1a4eef0be910db0cb5f154eaeb469732e1f9b54548':
{
'size': 381,
'fee': 0,
'modifiedfee': 0,
'time': ANY,
'height': 0,
'descendantcount': 0,
'descendantsize': 0,
'descendantfees': 0,
'ancestorcount': 0,
'ancestorsize': 0,
'ancestorfees': 0,
'depends': []
}
}, mempool_response)
self.repository.blockchain.save_block.side_effect = lambda a: {
'block_object': Block.from_bin(a['block_bytes'])
}
self.repository.blockchain.get_transactions_by_block_hash.return_value = [], None
self.loop.run_until_complete(self.sut.on_block_header(block_header))
self.assertEqual(self.mempool_repository.get_raw_mempool(True), {})
self.assertEqual([x for x in self.mempool_repository.get_txids()], [])
def make_block(index):
s = index * 30000
txs = [make_tx(i) for i in range(s, s + 8)]
block = Block(version=1,
previous_block_hash=b'\0' * 32,
merkle_root=b'\0' * 32,
timestamp=GENESIS_TIME + index,
difficulty=s,
nonce=s,
txs=txs)
return block
def make_block(i):
s = i * 30000
txs = [make_tx(i) for i in range(s, s + 8)]
block = Block(version=1,
previous_block_hash=b'\0' * 32,
merkle_root=b'\0' * 32,
timestamp=1390000000 + i,
difficulty=s,
nonce=s,
txs=txs)
return block
def make_headers(count, header=None):
if header is None:
last_hash = HASH_INITIAL_BLOCK
else:
last_hash = header.hash()
tweak = last_hash
headers = []
for i in range(count):
headers.append(
Block(version=1,
previous_block_hash=last_hash,
merkle_root=make_hash(i, tweak),
timestamp=GENESIS_TIME + i * 600,
difficulty=DEFAULT_DIFFICULTY,
nonce=i * 137))
last_hash = headers[-1].hash()
return headers
def get_blockheader_with_transaction_hashes(self, block_hash):
URL = "%s%sblock/%s" % (self.base_url, self.base_path, b2h_rev(block_hash))
r = json.loads(urlopen(URL).read().decode("utf8"))
version = r.get("version")
previous_block_hash = h2b_rev(r.get("previousblockhash"))
merkle_root = h2b_rev(r.get("merkleroot"))
timestamp = r.get("time")
difficulty = int(r.get("bits"), 16)
nonce = int(r.get("nonce"))
tx_hashes = [h2b_rev(tx_hash) for tx_hash in r.get("tx")]
blockheader = Block(version, previous_block_hash, merkle_root, timestamp, difficulty, nonce)
if blockheader.hash() != block_hash:
return None, None
calculated_hash = merkle(tx_hashes, double_sha256)
if calculated_hash != merkle_root:
return None, None
blockheader.height = r.get("height")
return blockheader, tx_hashes
def _get_block_with_tx(self):
from pycoin.tx.Tx import Tx
tx = Tx.from_hex(
'01000000000101112a649fd72656cf572259cb7cb61bd31ccdbdf0944070e73401565affbe629d0100000000ffffffff02608'
'de2110000000017a914d52b516c1a094462959ed6facebb94429d2cebf487d3135b0b00000000220020701a8d401c84fb13e6'
'baf169d59684e17abd9fa216c8cc5b9fc63d622ff8c58d0400473044022006b149e0cf031f57fd443bd1210b381e9b1b15094'
'57ba1f49e48b803696f56e802203d66bd974ad3ac5b7591cc84e706b78d139c61e2bf1995a89c4dc0758984a2b70148304502'
'2100fe7275d601080e1870517774a3ad6accaa7f8ad144addec3251e98685d4fefad02207792c2b0ed6ab42ed2ba6d12e6bd3'
'4db8c6f4ac6f15e604f70ea85a735c450b1016952210375e00eb72e29da82b89367947f29ef34afb75e8654f6ea368e0acdfd'
'92976b7c2103a1b26313f430c4b15bb1fdce663207659d8cac749a0e53d70eff01874496feff2103c96d495bfdd5ba4145e3e'
'046fee45e84a8a48ad05bd8dbb395c011a32cf9f88053ae00000000')
block = Block(1,
b'0' * 32,
merkle_root=merkle([tx.hash()]),
timestamp=123456789,
difficulty=3000000,
nonce=1 * 137)
block.txs.append(tx)
return block
def make_blocks(count, nonce_base=30000, previous_block_hash=b'\0' * 32):
blocks = []
for i in range(count):
s = i * nonce_base
txs = [COINBASE_TX] # + [make_tx(i) for i in range(s, s+8)]
nonce = s
while True:
block = Block(version=1,
previous_block_hash=previous_block_hash,
merkle_root=b'\0' * 32,
timestamp=1390000000 + i * 600,
difficulty=i,
nonce=nonce,
txs=txs)
if block.hash()[-1] == i & 0xff:
break
nonce += 1
blocks.append(block)
previous_block_hash = block.hash()
return blocks
def make_blocks(count,
nonce_base=30000,
previous_block_hash=HASH_INITIAL_BLOCK):
blocks = []
for i in range(count):
s = i * nonce_base
txs = [coinbase_tx(i + 1)] + [make_tx(i) for i in range(s, s + 8)]
nonce = s
while True:
merkle_root = merkle([tx.hash() for tx in txs])
block = Block(version=1,
previous_block_hash=previous_block_hash,
merkle_root=merkle_root,
timestamp=GENESIS_TIME + i * 600,
difficulty=i,
nonce=nonce)
block.set_txs(txs)
if block.hash()[-1] == i & 0xff:
break
nonce += 1
blocks.append(block)
previous_block_hash = block.hash()
return blocks
