mirror of https://github.com/bitcoin/bitcoin
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
2.5 KiB
62 lines
2.5 KiB
#!/usr/bin/env python3
|
|
# Copyright (c) 2014-2020 The Bitcoin Core developers
|
|
# Distributed under the MIT software license, see the accompanying
|
|
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
|
"""Test spending coinbase transactions.
|
|
|
|
The coinbase transaction in block N can appear in block
|
|
N+100... so is valid in the mempool when the best block
|
|
height is N+99.
|
|
This test makes sure coinbase spends that will be mature
|
|
in the next block are accepted into the memory pool,
|
|
but less mature coinbase spends are NOT.
|
|
"""
|
|
|
|
from test_framework.test_framework import BitcoinTestFramework
|
|
from test_framework.util import assert_equal, assert_raises_rpc_error
|
|
from test_framework.wallet import MiniWallet
|
|
|
|
|
|
class MempoolSpendCoinbaseTest(BitcoinTestFramework):
|
|
def set_test_params(self):
|
|
self.num_nodes = 1
|
|
|
|
def run_test(self):
|
|
wallet = MiniWallet(self.nodes[0])
|
|
|
|
# Invalidate two blocks, so that miniwallet has access to a coin that will mature in the next block
|
|
chain_height = 198
|
|
self.nodes[0].invalidateblock(self.nodes[0].getblockhash(chain_height + 1))
|
|
assert_equal(chain_height, self.nodes[0].getblockcount())
|
|
|
|
# Coinbase at height chain_height-100+1 ok in mempool, should
|
|
# get mined. Coinbase at height chain_height-100+2 is
|
|
# too immature to spend.
|
|
wallet.scan_blocks(start=chain_height - 100 + 1, num=1)
|
|
utxo_mature = wallet.get_utxo()
|
|
wallet.scan_blocks(start=chain_height - 100 + 2, num=1)
|
|
utxo_immature = wallet.get_utxo()
|
|
|
|
spend_mature_id = wallet.send_self_transfer(from_node=self.nodes[0], utxo_to_spend=utxo_mature)["txid"]
|
|
|
|
# other coinbase should be too immature to spend
|
|
immature_tx = wallet.create_self_transfer(from_node=self.nodes[0], utxo_to_spend=utxo_immature, mempool_valid=False)
|
|
assert_raises_rpc_error(-26,
|
|
"bad-txns-premature-spend-of-coinbase",
|
|
lambda: self.nodes[0].sendrawtransaction(immature_tx['hex']))
|
|
|
|
# mempool should have just the mature one
|
|
assert_equal(self.nodes[0].getrawmempool(), [spend_mature_id])
|
|
|
|
# mine a block, mature one should get confirmed
|
|
self.nodes[0].generate(1)
|
|
assert_equal(set(self.nodes[0].getrawmempool()), set())
|
|
|
|
# ... and now previously immature can be spent:
|
|
spend_new_id = self.nodes[0].sendrawtransaction(immature_tx['hex'])
|
|
assert_equal(self.nodes[0].getrawmempool(), [spend_new_id])
|
|
|
|
|
|
if __name__ == '__main__':
|
|
MempoolSpendCoinbaseTest().main()
|