neobytes/test/functional/mempool_spendcoinbase.py
MarcoFalke 17bb230d74 Merge #11121: TestNode tidyups
7148b74dc [tests] Functional tests must explicitly set num_nodes (John Newbery)
5448a1471 [tests] don't override __init__() in individual tests (John Newbery)
6cf094a02 [tests] Avoid passing around member variables in test_framework (John Newbery)
36b626867 [tests] TestNode: separate add_node from start_node (John Newbery)
be2a2ab6a [tests] fix - use rpc_timeout as rpc timeout (John Newbery)

Pull request description:

  Some additional tidyups after the introduction of TestNode:

  - commit 1 makes TestNode use the correct rpc timeout. This should have been included in #11077
  - commit 2 separates `add_node()` from `start_node()` as originally discussed here: https://github.com/bitcoin/bitcoin/pull/10556#discussion_r121161453 with @kallewoof . The test writer no longer needs to assign to `self.nodes` when starting/stopping nodes.
  - commit 3 adds a `set_test_params()` method, so individual tests don't need to override `__init__()` and call `super().__init__()`

Tree-SHA512: 0adb030623b96675b5c29e2890ce99ccd837ed05f721d0c91b35378c5ac01b6658174aac12f1f77402e1d38b61f39b3c43b4df85c96952565dde1cda05b0db84
2019-09-24 16:58:03 +02:00

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2.2 KiB
Python
Executable File

#!/usr/bin/env python3
# Copyright (c) 2014-2016 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 *
# Create one-input, one-output, no-fee transaction:
class MempoolSpendCoinbaseTest(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 1
self.extra_args = [["-checkmempool"]]
def run_test(self):
chain_height = self.nodes[0].getblockcount()
assert_equal(chain_height, 200)
node0_address = self.nodes[0].getnewaddress()
# Coinbase at height chain_height-100+1 ok in mempool, should
# get mined. Coinbase at height chain_height-100+2 is
# is too immature to spend.
b = [ self.nodes[0].getblockhash(n) for n in range(101, 103) ]
coinbase_txids = [ self.nodes[0].getblock(h)['tx'][0] for h in b ]
spends_raw = [ create_tx(self.nodes[0], txid, node0_address, 500 - Decimal('0.00001')) for txid in coinbase_txids ]
spend_101_id = self.nodes[0].sendrawtransaction(spends_raw[0])
# coinbase at height 102 should be too immature to spend
assert_raises_jsonrpc(-26,"bad-txns-premature-spend-of-coinbase", self.nodes[0].sendrawtransaction, spends_raw[1])
# mempool should have just spend_101:
assert_equal(self.nodes[0].getrawmempool(), [ spend_101_id ])
# mine a block, spend_101 should get confirmed
self.nodes[0].generate(1)
assert_equal(set(self.nodes[0].getrawmempool()), set())
# ... and now height 102 can be spent:
spend_102_id = self.nodes[0].sendrawtransaction(spends_raw[1])
assert_equal(self.nodes[0].getrawmempool(), [ spend_102_id ])
if __name__ == '__main__':
MempoolSpendCoinbaseTest().main()