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85 lines
3.5 KiB
Python
Executable file
85 lines
3.5 KiB
Python
Executable file
#!/usr/bin/env python3
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# Copyright (c) 2015-2018 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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"""Test BIP 34, 65, 66, CSV activation at block 0"""
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from test_framework.blocktools import create_coinbase, create_block, create_transaction
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from test_framework.messages import msg_block
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from test_framework.p2p import P2PInterface
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from test_framework.script import (
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CScript,
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OP_TRUE,
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OP_DROP,
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OP_CHECKLOCKTIMEVERIFY,
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)
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import assert_equal, softfork_active
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class BlockV4Test(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 1
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self.extra_args = [['-whitelist=127.0.0.1', '-con_bip34height=0', '-con_bip65height=0', '-con_bip66height=0', '-con_csv_deploy_start=-1', '-acceptnonstdtxn=1']]
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self.setup_clean_chain = True
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def skip_test_if_missing_module(self):
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self.skip_if_no_wallet()
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def run_test(self):
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# First, quick check that CSV is ACTIVE at genesis
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assert_equal(self.nodes[0].getblockcount(), 0)
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assert softfork_active(self.nodes[0], 'csv')
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peer = self.nodes[0].add_p2p_connection(P2PInterface())
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self.nodeaddress = self.nodes[0].getnewaddress()
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self.log.info("Test that blocks past the genesis block must be at least version 4")
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# Create a v3 block
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tip = self.nodes[0].getbestblockhash()
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block_time = self.nodes[0].getblockheader(tip)['mediantime'] + 1
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block = create_block(int(tip, 16), create_coinbase(1), block_time)
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block.nVersion = 3
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block.solve()
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# The best block should not have changed, because...
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assert_equal(self.nodes[0].getbestblockhash(), tip)
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# ... we rejected it because it is v3
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with self.nodes[0].assert_debug_log(expected_msgs=['{}, bad-version(0x00000003)'.format(block.hash)]):
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# Send it to the node
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peer.send_and_ping(msg_block(block))
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self.log.info("Test that a version 4 block with a valid-according-to-CLTV transaction is accepted")
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# Generate 100 blocks so that first coinbase matures
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generated_blocks = self.generate(self.nodes[0], 100)
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spendable_coinbase_txid = self.nodes[0].getblock(generated_blocks[0])['tx'][0]
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coinbase_value = self.nodes[0].decoderawtransaction(self.nodes[0].gettransaction(spendable_coinbase_txid)["hex"])["vout"][0]["value"]
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tip = generated_blocks[-1]
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# Construct a v4 block
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block_time = self.nodes[0].getblockheader(tip)['mediantime'] + 1
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block = create_block(int(tip, 16), create_coinbase(len(generated_blocks) + 1), block_time)
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block.nVersion = 4
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# Create a CLTV transaction
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spendtx = create_transaction(self.nodes[0], spendable_coinbase_txid,
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self.nodeaddress, amount=1.0, fee=coinbase_value-1, locktime=1)
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spendtx.nLockTime = 1
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spendtx.vin[0].scriptSig = CScript([OP_TRUE, OP_CHECKLOCKTIMEVERIFY, OP_DROP] + list(CScript(spendtx.vin[0].scriptSig)))
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spendtx.rehash()
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# Add the CLTV transaction and prepare for sending
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block.vtx.append(spendtx)
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block.hashMerkleRoot = block.calc_merkle_root()
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block.solve()
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# Send block and check that it becomes new best block
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peer.send_and_ping(msg_block(block))
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assert_equal(int(self.nodes[0].getbestblockhash(), 16), block.sha256)
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if __name__ == '__main__':
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BlockV4Test().main()
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