143 lines
5.8 KiB
143 lines
5.8 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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# |
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# Test PrioritiseTransaction code |
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# |
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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 __init__(self): |
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super().__init__() |
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self.setup_clean_chain = True |
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self.num_nodes = 1 |
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self.txouts = gen_return_txouts() |
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def setup_network(self): |
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self.nodes = [] |
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self.is_network_split = False |
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self.nodes.append(start_node(0, self.options.tmpdir, ["-debug", "-printpriority=1"])) |
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self.relayfee = self.nodes[0].getnetworkinfo()['relayfee'] |
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def run_test(self): |
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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 (lower |
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# the priority to ensure its not mined due to priority) |
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self.nodes[0].prioritisetransaction(txids[0][0], 0, int(3*base_fee*COIN)) |
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self.nodes[0].prioritisetransaction(txids[0][1], -1e15, 0) |
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self.nodes[0].generate(1) |
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mempool = self.nodes[0].getrawmempool() |
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print("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(high_fee_tx, -1e15, -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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print("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, low priority 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"] - self.relayfee |
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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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txid = self.nodes[0].sendrawtransaction(tx_hex) |
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# A tx that spends an in-mempool tx has 0 priority, so we can use it to |
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# test the effect of using prioritise transaction for mempool acceptance |
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inputs = [] |
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inputs.append({"txid": txid, "vout": 0}) |
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outputs = {} |
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outputs[self.nodes[0].getnewaddress()] = utxo["amount"] - self.relayfee |
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raw_tx2 = self.nodes[0].createrawtransaction(inputs, outputs) |
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tx2_hex = self.nodes[0].signrawtransaction(raw_tx2)["hex"] |
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tx2_id = self.nodes[0].decoderawtransaction(tx2_hex)["txid"] |
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try: |
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self.nodes[0].sendrawtransaction(tx2_hex) |
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except JSONRPCException as exp: |
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assert_equal(exp.error['code'], -26) # insufficient fee |
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assert(tx2_id not in self.nodes[0].getrawmempool()) |
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else: |
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assert(False) |
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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(tx2_id, 0, int(self.relayfee*COIN)) |
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print("Assert that prioritised free transaction is accepted to mempool") |
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assert_equal(self.nodes[0].sendrawtransaction(tx2_hex), tx2_id) |
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assert(tx2_id in self.nodes[0].getrawmempool()) |
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if __name__ == '__main__': |
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PrioritiseTransactionTest().main()
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