Differential D4820 Diff 15179 test/functional/mempool_spend_coinbase.py

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test/functional/mempool_spend_coinbase.py

	#!/usr/bin/env python3			#!/usr/bin/env python3
	# Copyright (c) 2014-2016 The Bitcoin Core developers			# Copyright (c) 2014-2016 The Bitcoin Core developers
	# Distributed under the MIT software license, see the accompanying			# Distributed under the MIT software license, see the accompanying
	# file COPYING or http://www.opensource.org/licenses/mit-license.php.			# file COPYING or http://www.opensource.org/licenses/mit-license.php.
	"""Test spending coinbase transactions.			"""Test spending coinbase transactions.

	The coinbase transaction in block N can appear in block			The coinbase transaction in block N can appear in block
	N+100... so is valid in the mempool when the best block			N+100... so is valid in the mempool when the best block
	height is N+99.			height is N+99.
	This test makes sure coinbase spends that will be mature			This test makes sure coinbase spends that will be mature
	in the next block are accepted into the memory pool,			in the next block are accepted into the memory pool,
	but less mature coinbase spends are NOT.			but less mature coinbase spends are NOT.
	"""			"""

	from test_framework.test_framework import BitcoinTestFramework			from test_framework.test_framework import BitcoinTestFramework
	from test_framework.util import assert_equal, assert_raises_rpc_error, create_tx			from test_framework.blocktools import create_raw_transaction
				from test_framework.util import assert_equal, assert_raises_rpc_error

	# Create one-input, one-output, no-fee transaction:			# Create one-input, one-output, no-fee transaction:


	class MempoolSpendCoinbaseTest(BitcoinTestFramework):			class MempoolSpendCoinbaseTest(BitcoinTestFramework):
	def set_test_params(self):			def set_test_params(self):
	self.num_nodes = 1			self.num_nodes = 1
	self.extra_args = [["-checkmempool"]]			self.extra_args = [["-checkmempool"]]

	def run_test(self):			def run_test(self):
	chain_height = self.nodes[0].getblockcount()			chain_height = self.nodes[0].getblockcount()
	assert_equal(chain_height, 200)			assert_equal(chain_height, 200)
	node0_address = self.nodes[0].getnewaddress()			node0_address = self.nodes[0].getnewaddress()

	# Coinbase at height chain_height-100+1 ok in mempool, should			# Coinbase at height chain_height-100+1 ok in mempool, should
	# get mined. Coinbase at height chain_height-100+2 is			# get mined. Coinbase at height chain_height-100+2 is
	# is too immature to spend.			# is too immature to spend.
	b = [self.nodes[0].getblockhash(n) for n in range(101, 103)]			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]			coinbase_txids = [self.nodes[0].getblock(h)['tx'][0] for h in b]
	spends_raw = [create_tx(self.nodes[0], txid, node0_address, 49.99)			spends_raw = [create_raw_transaction(self.nodes[0], txid, node0_address, 49.99)
	for txid in coinbase_txids]			for txid in coinbase_txids]

	spend_101_id = self.nodes[0].sendrawtransaction(spends_raw[0])			spend_101_id = self.nodes[0].sendrawtransaction(spends_raw[0])

	# coinbase at height 102 should be too immature to spend			# coinbase at height 102 should be too immature to spend
	assert_raises_rpc_error(-26, "bad-txns-premature-spend-of-coinbase",			assert_raises_rpc_error(-26, "bad-txns-premature-spend-of-coinbase",
	self.nodes[0].sendrawtransaction, spends_raw[1])			self.nodes[0].sendrawtransaction, spends_raw[1])

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