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181 lines
6.5 KiB
181 lines
6.5 KiB
#!/usr/bin/env python3 |
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# Copyright (c) 2015-2016 The Bitcoin Core developers |
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# Distributed under the MIT software license, see the accompanying |
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# file COPYING or http://www.opensource.org/licenses/mit-license.php. |
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from test_framework.test_framework import ComparisonTestFramework |
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from test_framework.util import * |
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from test_framework.mininode import CTransaction, NetworkThread |
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from test_framework.blocktools import create_coinbase, create_block |
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from test_framework.comptool import TestInstance, TestManager |
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from test_framework.script import CScript, OP_1NEGATE, OP_CHECKLOCKTIMEVERIFY, OP_DROP |
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from io import BytesIO |
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import time |
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def cltv_invalidate(tx): |
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'''Modify the signature in vin 0 of the tx to fail CLTV |
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Prepends -1 CLTV DROP in the scriptSig itself. |
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''' |
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tx.vin[0].scriptSig = CScript([OP_1NEGATE, OP_CHECKLOCKTIMEVERIFY, OP_DROP] + |
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list(CScript(tx.vin[0].scriptSig))) |
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''' |
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This test is meant to exercise BIP65 (CHECKLOCKTIMEVERIFY) |
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Connect to a single node. |
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Mine 2 (version 3) blocks (save the coinbases for later). |
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Generate 98 more version 3 blocks, verify the node accepts. |
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Mine 749 version 4 blocks, verify the node accepts. |
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Check that the new CLTV rules are not enforced on the 750th version 4 block. |
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Check that the new CLTV rules are enforced on the 751st version 4 block. |
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Mine 199 new version blocks. |
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Mine 1 old-version block. |
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Mine 1 new version block. |
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Mine 1 old version block, see that the node rejects. |
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''' |
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class BIP65Test(ComparisonTestFramework): |
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def __init__(self): |
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super().__init__() |
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self.num_nodes = 1 |
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def setup_network(self): |
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# Must set the blockversion for this test |
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self.nodes = start_nodes(self.num_nodes, self.options.tmpdir, |
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extra_args=[['-debug', '-whitelist=127.0.0.1', '-blockversion=3']], |
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binary=[self.options.testbinary]) |
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def run_test(self): |
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test = TestManager(self, self.options.tmpdir) |
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test.add_all_connections(self.nodes) |
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NetworkThread().start() # Start up network handling in another thread |
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test.run() |
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def create_transaction(self, node, coinbase, to_address, amount): |
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from_txid = node.getblock(coinbase)['tx'][0] |
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inputs = [{ "txid" : from_txid, "vout" : 0}] |
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outputs = { to_address : amount } |
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rawtx = node.createrawtransaction(inputs, outputs) |
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signresult = node.signrawtransaction(rawtx) |
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tx = CTransaction() |
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f = BytesIO(hex_str_to_bytes(signresult['hex'])) |
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tx.deserialize(f) |
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return tx |
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def get_tests(self): |
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self.coinbase_blocks = self.nodes[0].generate(2) |
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height = 3 # height of the next block to build |
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self.tip = int("0x" + self.nodes[0].getbestblockhash(), 0) |
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self.nodeaddress = self.nodes[0].getnewaddress() |
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self.last_block_time = int(time.time()) |
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''' 98 more version 3 blocks ''' |
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test_blocks = [] |
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for i in range(98): |
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block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) |
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block.nVersion = 3 |
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block.rehash() |
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block.solve() |
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test_blocks.append([block, True]) |
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self.last_block_time += 1 |
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self.tip = block.sha256 |
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height += 1 |
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yield TestInstance(test_blocks, sync_every_block=False) |
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''' Mine 749 version 4 blocks ''' |
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test_blocks = [] |
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for i in range(749): |
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block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) |
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block.nVersion = 4 |
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block.rehash() |
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block.solve() |
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test_blocks.append([block, True]) |
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self.last_block_time += 1 |
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self.tip = block.sha256 |
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height += 1 |
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yield TestInstance(test_blocks, sync_every_block=False) |
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''' |
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Check that the new CLTV rules are not enforced in the 750th |
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version 3 block. |
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''' |
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spendtx = self.create_transaction(self.nodes[0], |
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self.coinbase_blocks[0], self.nodeaddress, 1.0) |
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cltv_invalidate(spendtx) |
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spendtx.rehash() |
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block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) |
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block.nVersion = 4 |
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block.vtx.append(spendtx) |
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block.hashMerkleRoot = block.calc_merkle_root() |
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block.rehash() |
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block.solve() |
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self.last_block_time += 1 |
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self.tip = block.sha256 |
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height += 1 |
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yield TestInstance([[block, True]]) |
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''' |
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Check that the new CLTV rules are enforced in the 751st version 4 |
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block. |
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''' |
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spendtx = self.create_transaction(self.nodes[0], |
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self.coinbase_blocks[1], self.nodeaddress, 1.0) |
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cltv_invalidate(spendtx) |
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spendtx.rehash() |
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block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) |
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block.nVersion = 4 |
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block.vtx.append(spendtx) |
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block.hashMerkleRoot = block.calc_merkle_root() |
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block.rehash() |
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block.solve() |
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self.last_block_time += 1 |
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yield TestInstance([[block, False]]) |
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''' Mine 199 new version blocks on last valid tip ''' |
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test_blocks = [] |
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for i in range(199): |
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block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) |
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block.nVersion = 4 |
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block.rehash() |
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block.solve() |
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test_blocks.append([block, True]) |
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self.last_block_time += 1 |
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self.tip = block.sha256 |
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height += 1 |
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yield TestInstance(test_blocks, sync_every_block=False) |
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''' Mine 1 old version block ''' |
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block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) |
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block.nVersion = 3 |
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block.rehash() |
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block.solve() |
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self.last_block_time += 1 |
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self.tip = block.sha256 |
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height += 1 |
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yield TestInstance([[block, True]]) |
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''' Mine 1 new version block ''' |
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block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) |
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block.nVersion = 4 |
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block.rehash() |
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block.solve() |
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self.last_block_time += 1 |
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self.tip = block.sha256 |
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height += 1 |
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yield TestInstance([[block, True]]) |
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''' Mine 1 old version block, should be invalid ''' |
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block = create_block(self.tip, create_coinbase(height), self.last_block_time + 1) |
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block.nVersion = 3 |
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block.rehash() |
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block.solve() |
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self.last_block_time += 1 |
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yield TestInstance([[block, False]]) |
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if __name__ == '__main__': |
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BIP65Test().main()
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