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129 lines
5.6 KiB
129 lines
5.6 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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"""Test the prioritisetransaction mining RPC."""
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import *
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from test_framework.mininode import COIN, MAX_BLOCK_BASE_SIZE
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class PrioritiseTransactionTest(BitcoinTestFramework):
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def set_test_params(self):
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self.setup_clean_chain = True
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self.num_nodes = 2
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self.extra_args = [["-printpriority=1"], ["-printpriority=1"]]
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def run_test(self):
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self.txouts = gen_return_txouts()
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self.relayfee = self.nodes[0].getnetworkinfo()['relayfee']
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utxo_count = 90
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utxos = create_confirmed_utxos(self.relayfee, self.nodes[0], utxo_count)
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base_fee = self.relayfee*100 # our transactions are smaller than 100kb
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txids = []
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# Create 3 batches of transactions at 3 different fee rate levels
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range_size = utxo_count // 3
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for i in range(3):
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txids.append([])
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start_range = i * range_size
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end_range = start_range + range_size
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txids[i] = create_lots_of_big_transactions(self.nodes[0], self.txouts, utxos[start_range:end_range], end_range - start_range, (i+1)*base_fee)
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# Make sure that the size of each group of transactions exceeds
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# MAX_BLOCK_BASE_SIZE -- otherwise the test needs to be revised to create
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# more transactions.
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mempool = self.nodes[0].getrawmempool(True)
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sizes = [0, 0, 0]
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for i in range(3):
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for j in txids[i]:
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assert(j in mempool)
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sizes[i] += mempool[j]['size']
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assert(sizes[i] > MAX_BLOCK_BASE_SIZE) # Fail => raise utxo_count
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# add a fee delta to something in the cheapest bucket and make sure it gets mined
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# also check that a different entry in the cheapest bucket is NOT mined
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self.nodes[0].prioritisetransaction(txid=txids[0][0], fee_delta=int(3*base_fee*COIN))
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self.nodes[0].generate(1)
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mempool = self.nodes[0].getrawmempool()
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self.log.info("Assert that prioritised transaction was mined")
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assert(txids[0][0] not in mempool)
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assert(txids[0][1] in mempool)
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high_fee_tx = None
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for x in txids[2]:
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if x not in mempool:
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high_fee_tx = x
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# Something high-fee should have been mined!
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assert(high_fee_tx != None)
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# Add a prioritisation before a tx is in the mempool (de-prioritising a
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# high-fee transaction so that it's now low fee).
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self.nodes[0].prioritisetransaction(txid=high_fee_tx, fee_delta=-int(2*base_fee*COIN))
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# Add everything back to mempool
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self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
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# Check to make sure our high fee rate tx is back in the mempool
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mempool = self.nodes[0].getrawmempool()
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assert(high_fee_tx in mempool)
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# Now verify the modified-high feerate transaction isn't mined before
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# the other high fee transactions. Keep mining until our mempool has
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# decreased by all the high fee size that we calculated above.
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while (self.nodes[0].getmempoolinfo()['bytes'] > sizes[0] + sizes[1]):
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self.nodes[0].generate(1)
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# High fee transaction should not have been mined, but other high fee rate
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# transactions should have been.
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mempool = self.nodes[0].getrawmempool()
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self.log.info("Assert that de-prioritised transaction is still in mempool")
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assert(high_fee_tx in mempool)
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for x in txids[2]:
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if (x != high_fee_tx):
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assert(x not in mempool)
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# Create a free transaction. Should be rejected.
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utxo_list = self.nodes[0].listunspent()
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assert(len(utxo_list) > 0)
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utxo = utxo_list[0]
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inputs = []
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outputs = {}
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inputs.append({"txid" : utxo["txid"], "vout" : utxo["vout"]})
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outputs[self.nodes[0].getnewaddress()] = utxo["amount"]
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raw_tx = self.nodes[0].createrawtransaction(inputs, outputs)
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tx_hex = self.nodes[0].signrawtransaction(raw_tx)["hex"]
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tx_id = self.nodes[0].decoderawtransaction(tx_hex)["txid"]
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# This will raise an exception due to min relay fee not being met
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assert_raises_rpc_error(-26, "66: min relay fee not met", self.nodes[0].sendrawtransaction, tx_hex)
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assert(tx_id not in self.nodes[0].getrawmempool())
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# This is a less than 1000-byte transaction, so just set the fee
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# to be the minimum for a 1000 byte transaction and check that it is
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# accepted.
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self.nodes[0].prioritisetransaction(txid=tx_id, fee_delta=int(self.relayfee*COIN))
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self.log.info("Assert that prioritised free transaction is accepted to mempool")
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assert_equal(self.nodes[0].sendrawtransaction(tx_hex), tx_id)
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assert(tx_id in self.nodes[0].getrawmempool())
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# Test that calling prioritisetransaction is sufficient to trigger
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# getblocktemplate to (eventually) return a new block.
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mock_time = int(time.time())
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self.nodes[0].setmocktime(mock_time)
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template = self.nodes[0].getblocktemplate()
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self.nodes[0].prioritisetransaction(txid=tx_id, fee_delta=-int(self.relayfee*COIN))
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self.nodes[0].setmocktime(mock_time+10)
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new_template = self.nodes[0].getblocktemplate()
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assert(template != new_template)
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if __name__ == '__main__':
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PrioritiseTransactionTest().main()
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