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-rwxr-xr-xtest/functional/bip65-cltv-p2p.py241
1 files changed, 115 insertions, 126 deletions
diff --git a/test/functional/bip65-cltv-p2p.py b/test/functional/bip65-cltv-p2p.py
index bb83042f35..7e5e4cf682 100755
--- a/test/functional/bip65-cltv-p2p.py
+++ b/test/functional/bip65-cltv-p2p.py
@@ -4,173 +4,162 @@
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Test BIP65 (CHECKLOCKTIMEVERIFY).
-Connect to a single node.
-Mine 2 (version 3) blocks (save the coinbases for later).
-Generate 98 more version 3 blocks, verify the node accepts.
-Mine 749 version 4 blocks, verify the node accepts.
-Check that the new CLTV rules are not enforced on the 750th version 4 block.
-Check that the new CLTV rules are enforced on the 751st version 4 block.
-Mine 199 new version blocks.
-Mine 1 old-version block.
-Mine 1 new version block.
-Mine 1 old version block, see that the node rejects.
+Test that the CHECKLOCKTIMEVERIFY soft-fork activates at (regtest) block height
+1351.
"""
-from test_framework.test_framework import ComparisonTestFramework
+from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import *
-from test_framework.mininode import CTransaction, NetworkThread
+from test_framework.mininode import *
from test_framework.blocktools import create_coinbase, create_block
-from test_framework.comptool import TestInstance, TestManager
-from test_framework.script import CScript, OP_1NEGATE, OP_CHECKLOCKTIMEVERIFY, OP_DROP
+from test_framework.script import CScript, OP_1NEGATE, OP_CHECKLOCKTIMEVERIFY, OP_DROP, CScriptNum
from io import BytesIO
-import time
+
+CLTV_HEIGHT = 1351
+
+# Reject codes that we might receive in this test
+REJECT_INVALID = 16
+REJECT_OBSOLETE = 17
+REJECT_NONSTANDARD = 64
def cltv_invalidate(tx):
'''Modify the signature in vin 0 of the tx to fail CLTV
Prepends -1 CLTV DROP in the scriptSig itself.
+
+ TODO: test more ways that transactions using CLTV could be invalid (eg
+ locktime requirements fail, sequence time requirements fail, etc).
'''
tx.vin[0].scriptSig = CScript([OP_1NEGATE, OP_CHECKLOCKTIMEVERIFY, OP_DROP] +
list(CScript(tx.vin[0].scriptSig)))
-
-class BIP65Test(ComparisonTestFramework):
+def cltv_validate(node, tx, height):
+ '''Modify the signature in vin 0 of the tx to pass CLTV
+ Prepends <height> CLTV DROP in the scriptSig, and sets
+ the locktime to height'''
+ tx.vin[0].nSequence = 0
+ tx.nLockTime = height
+
+ # Need to re-sign, since nSequence and nLockTime changed
+ signed_result = node.signrawtransaction(ToHex(tx))
+ new_tx = CTransaction()
+ new_tx.deserialize(BytesIO(hex_str_to_bytes(signed_result['hex'])))
+
+ new_tx.vin[0].scriptSig = CScript([CScriptNum(height), OP_CHECKLOCKTIMEVERIFY, OP_DROP] +
+ list(CScript(new_tx.vin[0].scriptSig)))
+ return new_tx
+
+def create_transaction(node, coinbase, to_address, amount):
+ from_txid = node.getblock(coinbase)['tx'][0]
+ inputs = [{ "txid" : from_txid, "vout" : 0}]
+ outputs = { to_address : amount }
+ rawtx = node.createrawtransaction(inputs, outputs)
+ signresult = node.signrawtransaction(rawtx)
+ tx = CTransaction()
+ tx.deserialize(BytesIO(hex_str_to_bytes(signresult['hex'])))
+ return tx
+
+class BIP65Test(BitcoinTestFramework):
def __init__(self):
super().__init__()
self.num_nodes = 1
- self.extra_args = [['-whitelist=127.0.0.1', '-blockversion=3']]
+ self.extra_args = [['-promiscuousmempoolflags=1', '-whitelist=127.0.0.1']]
+ self.setup_clean_chain = True
def run_test(self):
- test = TestManager(self, self.options.tmpdir)
- test.add_all_connections(self.nodes)
+ node0 = NodeConnCB()
+ connections = []
+ connections.append(NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], node0))
+ node0.add_connection(connections[0])
+
NetworkThread().start() # Start up network handling in another thread
- test.run()
-
- def create_transaction(self, node, coinbase, to_address, amount):
- from_txid = node.getblock(coinbase)['tx'][0]
- inputs = [{ "txid" : from_txid, "vout" : 0}]
- outputs = { to_address : amount }
- rawtx = node.createrawtransaction(inputs, outputs)
- signresult = node.signrawtransaction(rawtx)
- tx = CTransaction()
- f = BytesIO(hex_str_to_bytes(signresult['hex']))
- tx.deserialize(f)
- return tx
-
- def get_tests(self):
-
- self.coinbase_blocks = self.nodes[0].generate(2)
- height = 3 # height of the next block to build
- self.tip = int("0x" + self.nodes[0].getbestblockhash(), 0)
+
+ # wait_for_verack ensures that the P2P connection is fully up.
+ node0.wait_for_verack()
+
+ self.log.info("Mining %d blocks", CLTV_HEIGHT - 2)
+ self.coinbase_blocks = self.nodes[0].generate(CLTV_HEIGHT - 2)
self.nodeaddress = self.nodes[0].getnewaddress()
- self.last_block_time = int(time.time())
-
- ''' 398 more version 3 blocks '''
- test_blocks = []
- for i in range(398):
- block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1)
- block.nVersion = 3
- block.rehash()
- block.solve()
- test_blocks.append([block, True])
- self.last_block_time += 1
- self.tip = block.sha256
- height += 1
- yield TestInstance(test_blocks, sync_every_block=False)
-
- ''' Mine 749 version 4 blocks '''
- test_blocks = []
- for i in range(749):
- block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1)
- block.nVersion = 4
- block.rehash()
- block.solve()
- test_blocks.append([block, True])
- self.last_block_time += 1
- self.tip = block.sha256
- height += 1
- yield TestInstance(test_blocks, sync_every_block=False)
-
- '''
- Check that the new CLTV rules are not enforced in the 750th
- version 3 block.
- '''
- spendtx = self.create_transaction(self.nodes[0],
- self.coinbase_blocks[0], self.nodeaddress, 1.0)
+
+ self.log.info("Test that an invalid-according-to-CLTV transaction can still appear in a block")
+
+ spendtx = create_transaction(self.nodes[0], self.coinbase_blocks[0],
+ self.nodeaddress, 1.0)
cltv_invalidate(spendtx)
spendtx.rehash()
- block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1)
- block.nVersion = 4
+ tip = self.nodes[0].getbestblockhash()
+ block_time = self.nodes[0].getblockheader(tip)['mediantime'] + 1
+ block = create_block(int(tip, 16), create_coinbase(CLTV_HEIGHT - 1), block_time)
+ block.nVersion = 3
block.vtx.append(spendtx)
block.hashMerkleRoot = block.calc_merkle_root()
- block.rehash()
block.solve()
- self.last_block_time += 1
- self.tip = block.sha256
- height += 1
- yield TestInstance([[block, True]])
-
- ''' Mine 199 new version blocks on last valid tip '''
- test_blocks = []
- for i in range(199):
- block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1)
- block.nVersion = 4
- block.rehash()
- block.solve()
- test_blocks.append([block, True])
- self.last_block_time += 1
- self.tip = block.sha256
- height += 1
- yield TestInstance(test_blocks, sync_every_block=False)
-
- ''' Mine 1 old version block '''
- block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1)
+ node0.send_and_ping(msg_block(block))
+ assert_equal(self.nodes[0].getbestblockhash(), block.hash)
+
+ self.log.info("Test that blocks must now be at least version 4")
+ tip = block.sha256
+ block_time += 1
+ block = create_block(tip, create_coinbase(CLTV_HEIGHT), block_time)
block.nVersion = 3
- block.rehash()
block.solve()
- self.last_block_time += 1
- self.tip = block.sha256
- height += 1
- yield TestInstance([[block, True]])
+ node0.send_and_ping(msg_block(block))
+ assert_equal(int(self.nodes[0].getbestblockhash(), 16), tip)
- ''' Mine 1 new version block '''
- block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1)
+ assert wait_until(lambda: "reject" in node0.last_message.keys())
+ with mininode_lock:
+ assert_equal(node0.last_message["reject"].code, REJECT_OBSOLETE)
+ assert_equal(node0.last_message["reject"].reason, b'bad-version(0x00000003)')
+ assert_equal(node0.last_message["reject"].data, block.sha256)
+ del node0.last_message["reject"]
+
+ self.log.info("Test that invalid-according-to-cltv transactions cannot appear in a block")
block.nVersion = 4
- block.rehash()
- block.solve()
- self.last_block_time += 1
- self.tip = block.sha256
- height += 1
- yield TestInstance([[block, True]])
-
- '''
- Check that the new CLTV rules are enforced in the 951st version 4
- block.
- '''
- spendtx = self.create_transaction(self.nodes[0],
- self.coinbase_blocks[1], self.nodeaddress, 1.0)
+
+ spendtx = create_transaction(self.nodes[0], self.coinbase_blocks[1],
+ self.nodeaddress, 1.0)
cltv_invalidate(spendtx)
spendtx.rehash()
- block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1)
- block.nVersion = 4
+ # First we show that this tx is valid except for CLTV by getting it
+ # accepted to the mempool (which we can achieve with
+ # -promiscuousmempoolflags).
+ node0.send_and_ping(msg_tx(spendtx))
+ assert spendtx.hash in self.nodes[0].getrawmempool()
+
+ # Now we verify that a block with this transaction is invalid.
block.vtx.append(spendtx)
block.hashMerkleRoot = block.calc_merkle_root()
- block.rehash()
block.solve()
- self.last_block_time += 1
- yield TestInstance([[block, False]])
- ''' Mine 1 old version block, should be invalid '''
- block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1)
- block.nVersion = 3
- block.rehash()
+ node0.send_and_ping(msg_block(block))
+ assert_equal(int(self.nodes[0].getbestblockhash(), 16), tip)
+
+ assert wait_until (lambda: "reject" in node0.last_message.keys())
+ with mininode_lock:
+ assert node0.last_message["reject"].code in [REJECT_INVALID, REJECT_NONSTANDARD]
+ assert_equal(node0.last_message["reject"].data, block.sha256)
+ if node0.last_message["reject"].code == REJECT_INVALID:
+ # Generic rejection when a block is invalid
+ assert_equal(node0.last_message["reject"].reason, b'block-validation-failed')
+ else:
+ assert b'Negative locktime' in node0.last_message["reject"].reason
+
+ self.log.info("Test that a version 4 block with a valid-according-to-CLTV transaction is accepted")
+ spendtx = cltv_validate(self.nodes[0], spendtx, CLTV_HEIGHT - 1)
+ spendtx.rehash()
+
+ block.vtx.pop(1)
+ block.vtx.append(spendtx)
+ block.hashMerkleRoot = block.calc_merkle_root()
block.solve()
- self.last_block_time += 1
- yield TestInstance([[block, False]])
+
+ node0.send_and_ping(msg_block(block))
+ assert_equal(int(self.nodes[0].getbestblockhash(), 16), block.sha256)
+
if __name__ == '__main__':
BIP65Test().main()