#!/usr/bin/env python3 # Copyright (c) 2014-2018 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 the fundrawtransaction RPC.""" from decimal import Decimal from test_framework.test_framework import BitcoinTestFramework from test_framework.util import ( assert_equal, assert_fee_amount, assert_greater_than, assert_greater_than_or_equal, assert_raises_rpc_error, connect_nodes_bi, count_bytes, find_vout_for_address, ) def get_unspent(listunspent, amount): for utx in listunspent: if utx['amount'] == amount: return utx raise AssertionError('Could not find unspent with amount={}'.format(amount)) class RawTransactionsTest(BitcoinTestFramework): def set_test_params(self): self.num_nodes = 4 self.setup_clean_chain = True def skip_test_if_missing_module(self): self.skip_if_no_wallet() def setup_network(self): self.setup_nodes() connect_nodes_bi(self.nodes, 0, 1) connect_nodes_bi(self.nodes, 1, 2) connect_nodes_bi(self.nodes, 0, 2) connect_nodes_bi(self.nodes, 0, 3) def run_test(self): min_relay_tx_fee = self.nodes[0].getnetworkinfo()['relayfee']*100 # This test is not meant to test fee estimation and we'd like # to be sure all txs are sent at a consistent desired feerate for node in self.nodes: node.settxfee(min_relay_tx_fee) # if the fee's positive delta is higher than this value tests will fail, # neg. delta always fail the tests. # The size of the signature of every input may be at most 2 bytes larger # than a minimum sized signature. # = 2 bytes * minRelayTxFeePerByte feeTolerance = 2 * min_relay_tx_fee/1000 self.nodes[2].generate(1) self.sync_all() self.nodes[0].generate(121) self.sync_all() # ensure that setting changePosition in fundraw with an exact match is handled properly rawmatch = self.nodes[2].createrawtransaction([], {self.nodes[2].getnewaddress():50}) rawmatch = self.nodes[2].fundrawtransaction(rawmatch, {"changePosition":1, "subtractFeeFromOutputs":[0]}) assert_equal(rawmatch["changepos"], -1) watchonly_address = self.nodes[0].getnewaddress() watchonly_pubkey = self.nodes[0].getaddressinfo(watchonly_address)["pubkey"] watchonly_amount = Decimal(200) self.nodes[3].importpubkey(watchonly_pubkey, "", True) watchonly_txid = self.nodes[0].sendtoaddress(watchonly_address, watchonly_amount) # Lock UTXO so nodes[0] doesn't accidentally spend it watchonly_vout = find_vout_for_address(self.nodes[0], watchonly_txid, watchonly_address) self.nodes[0].lockunspent(False, [{"txid": watchonly_txid, "vout": watchonly_vout}]) self.nodes[0].sendtoaddress(self.nodes[3].getnewaddress(), watchonly_amount / 10) self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), 1.5) self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), 1.0) self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(), 5.0) self.nodes[0].generate(1) self.sync_all() ############### # simple test # ############### inputs = [ ] outputs = { self.nodes[0].getnewaddress() : 1.0 } rawtx = self.nodes[2].createrawtransaction(inputs, outputs) dec_tx = self.nodes[2].decoderawtransaction(rawtx) rawtxfund = self.nodes[2].fundrawtransaction(rawtx) fee = rawtxfund['fee'] dec_tx = self.nodes[2].decoderawtransaction(rawtxfund['hex']) assert(len(dec_tx['vin']) > 0) #test that we have enough inputs ############################## # simple test with two coins # ############################## inputs = [ ] outputs = { self.nodes[0].getnewaddress() : 2.2 } rawtx = self.nodes[2].createrawtransaction(inputs, outputs) dec_tx = self.nodes[2].decoderawtransaction(rawtx) rawtxfund = self.nodes[2].fundrawtransaction(rawtx) fee = rawtxfund['fee'] dec_tx = self.nodes[2].decoderawtransaction(rawtxfund['hex']) assert(len(dec_tx['vin']) > 0) #test if we have enough inputs ############################## # simple test with two coins # ############################## inputs = [ ] outputs = { self.nodes[0].getnewaddress() : 2.6 } rawtx = self.nodes[2].createrawtransaction(inputs, outputs) dec_tx = self.nodes[2].decoderawtransaction(rawtx) rawtxfund = self.nodes[2].fundrawtransaction(rawtx) fee = rawtxfund['fee'] dec_tx = self.nodes[2].decoderawtransaction(rawtxfund['hex']) assert(len(dec_tx['vin']) > 0) assert_equal(dec_tx['vin'][0]['scriptSig']['hex'], '') ################################ # simple test with two outputs # ################################ inputs = [ ] outputs = { self.nodes[0].getnewaddress() : 2.6, self.nodes[1].getnewaddress() : 2.5 } rawtx = self.nodes[2].createrawtransaction(inputs, outputs) dec_tx = self.nodes[2].decoderawtransaction(rawtx) rawtxfund = self.nodes[2].fundrawtransaction(rawtx) fee = rawtxfund['fee'] dec_tx = self.nodes[2].decoderawtransaction(rawtxfund['hex']) totalOut = 0 for out in dec_tx['vout']: totalOut += out['value'] assert(len(dec_tx['vin']) > 0) assert_equal(dec_tx['vin'][0]['scriptSig']['hex'], '') ######################################################################### # test a fundrawtransaction with a VIN greater than the required amount # ######################################################################### utx = get_unspent(self.nodes[2].listunspent(), 5) inputs = [ {'txid' : utx['txid'], 'vout' : utx['vout']}] outputs = { self.nodes[0].getnewaddress() : 1.0 } rawtx = self.nodes[2].createrawtransaction(inputs, outputs) dec_tx = self.nodes[2].decoderawtransaction(rawtx) assert_equal(utx['txid'], dec_tx['vin'][0]['txid']) rawtxfund = self.nodes[2].fundrawtransaction(rawtx) fee = rawtxfund['fee'] dec_tx = self.nodes[2].decoderawtransaction(rawtxfund['hex']) totalOut = 0 for out in dec_tx['vout']: totalOut += out['value'] assert_equal(fee + totalOut, utx['amount']) #compare vin total and totalout+fee ##################################################################### # test a fundrawtransaction with which will not get a change output # ##################################################################### utx = get_unspent(self.nodes[2].listunspent(), 5) inputs = [ {'txid' : utx['txid'], 'vout' : utx['vout']}] outputs = { self.nodes[0].getnewaddress() : Decimal(5.0) - fee - feeTolerance } rawtx = self.nodes[2].createrawtransaction(inputs, outputs) dec_tx = self.nodes[2].decoderawtransaction(rawtx) assert_equal(utx['txid'], dec_tx['vin'][0]['txid']) rawtxfund = self.nodes[2].fundrawtransaction(rawtx) fee = rawtxfund['fee'] dec_tx = self.nodes[2].decoderawtransaction(rawtxfund['hex']) totalOut = 0 for out in dec_tx['vout']: totalOut += out['value'] assert_equal(rawtxfund['changepos'], -1) assert_equal(fee + totalOut, utx['amount']) #compare vin total and totalout+fee #################################################### # test a fundrawtransaction with an invalid option # #################################################### utx = get_unspent(self.nodes[2].listunspent(), 5) inputs = [ {'txid' : utx['txid'], 'vout' : utx['vout']} ] outputs = { self.nodes[0].getnewaddress() : Decimal(4.0) } rawtx = self.nodes[2].createrawtransaction(inputs, outputs) dec_tx = self.nodes[2].decoderawtransaction(rawtx) assert_equal(utx['txid'], dec_tx['vin'][0]['txid']) assert_raises_rpc_error(-3, "Unexpected key foo", self.nodes[2].fundrawtransaction, rawtx, {'foo':'bar'}) # reserveChangeKey was deprecated and is now removed assert_raises_rpc_error(-3, "Unexpected key reserveChangeKey", lambda: self.nodes[2].fundrawtransaction(hexstring=rawtx, options={'reserveChangeKey': True})) ############################################################ # test a fundrawtransaction with an invalid change address # ############################################################ utx = get_unspent(self.nodes[2].listunspent(), 5) inputs = [ {'txid' : utx['txid'], 'vout' : utx['vout']} ] outputs = { self.nodes[0].getnewaddress() : Decimal(4.0) } rawtx = self.nodes[2].createrawtransaction(inputs, outputs) dec_tx = self.nodes[2].decoderawtransaction(rawtx) assert_equal(utx['txid'], dec_tx['vin'][0]['txid']) assert_raises_rpc_error(-5, "changeAddress must be a valid canuckcoin address", self.nodes[2].fundrawtransaction, rawtx, {'changeAddress':'foobar'}) ############################################################ # test a fundrawtransaction with a provided change address # ############################################################ utx = get_unspent(self.nodes[2].listunspent(), 5) inputs = [ {'txid' : utx['txid'], 'vout' : utx['vout']} ] outputs = { self.nodes[0].getnewaddress() : Decimal(4.0) } rawtx = self.nodes[2].createrawtransaction(inputs, outputs) dec_tx = self.nodes[2].decoderawtransaction(rawtx) assert_equal(utx['txid'], dec_tx['vin'][0]['txid']) change = self.nodes[2].getnewaddress() assert_raises_rpc_error(-8, "changePosition out of bounds", self.nodes[2].fundrawtransaction, rawtx, {'changeAddress':change, 'changePosition':2}) rawtxfund = self.nodes[2].fundrawtransaction(rawtx, {'changeAddress': change, 'changePosition': 0}) dec_tx = self.nodes[2].decoderawtransaction(rawtxfund['hex']) out = dec_tx['vout'][0] assert_equal(change, out['scriptPubKey']['addresses'][0]) ######################################################### # test a fundrawtransaction with a provided change type # ######################################################### utx = get_unspent(self.nodes[2].listunspent(), 5) inputs = [ {'txid' : utx['txid'], 'vout' : utx['vout']} ] outputs = { self.nodes[0].getnewaddress() : Decimal(4.0) } rawtx = self.nodes[2].createrawtransaction(inputs, outputs) assert_raises_rpc_error(-1, "JSON value is not a string as expected", self.nodes[2].fundrawtransaction, rawtx, {'change_type': None}) assert_raises_rpc_error(-5, "Unknown change type ''", self.nodes[2].fundrawtransaction, rawtx, {'change_type': ''}) rawtx = self.nodes[2].fundrawtransaction(rawtx, {'change_type': 'bech32'}) dec_tx = self.nodes[2].decoderawtransaction(rawtx['hex']) assert_equal('witness_v0_keyhash', dec_tx['vout'][rawtx['changepos']]['scriptPubKey']['type']) ######################################################################### # test a fundrawtransaction with a VIN smaller than the required amount # ######################################################################### utx = get_unspent(self.nodes[2].listunspent(), 1) inputs = [ {'txid' : utx['txid'], 'vout' : utx['vout']}] outputs = { self.nodes[0].getnewaddress() : 1.0 } rawtx = self.nodes[2].createrawtransaction(inputs, outputs) # 4-byte version + 1-byte vin count + 36-byte prevout then script_len rawtx = rawtx[:82] + "0100" + rawtx[84:] dec_tx = self.nodes[2].decoderawtransaction(rawtx) assert_equal(utx['txid'], dec_tx['vin'][0]['txid']) assert_equal("00", dec_tx['vin'][0]['scriptSig']['hex']) rawtxfund = self.nodes[2].fundrawtransaction(rawtx) fee = rawtxfund['fee'] dec_tx = self.nodes[2].decoderawtransaction(rawtxfund['hex']) totalOut = 0 matchingOuts = 0 for i, out in enumerate(dec_tx['vout']): totalOut += out['value'] if out['scriptPubKey']['addresses'][0] in outputs: matchingOuts+=1 else: assert_equal(i, rawtxfund['changepos']) assert_equal(utx['txid'], dec_tx['vin'][0]['txid']) assert_equal("00", dec_tx['vin'][0]['scriptSig']['hex']) assert_equal(matchingOuts, 1) assert_equal(len(dec_tx['vout']), 2) ########################################### # test a fundrawtransaction with two VINs # ########################################### utx = get_unspent(self.nodes[2].listunspent(), 1) utx2 = get_unspent(self.nodes[2].listunspent(), 5) inputs = [ {'txid' : utx['txid'], 'vout' : utx['vout']},{'txid' : utx2['txid'], 'vout' : utx2['vout']} ] outputs = { self.nodes[0].getnewaddress() : 6.0 } rawtx = self.nodes[2].createrawtransaction(inputs, outputs) dec_tx = self.nodes[2].decoderawtransaction(rawtx) assert_equal(utx['txid'], dec_tx['vin'][0]['txid']) rawtxfund = self.nodes[2].fundrawtransaction(rawtx) fee = rawtxfund['fee'] dec_tx = self.nodes[2].decoderawtransaction(rawtxfund['hex']) totalOut = 0 matchingOuts = 0 for out in dec_tx['vout']: totalOut += out['value'] if out['scriptPubKey']['addresses'][0] in outputs: matchingOuts+=1 assert_equal(matchingOuts, 1) assert_equal(len(dec_tx['vout']), 2) matchingIns = 0 for vinOut in dec_tx['vin']: for vinIn in inputs: if vinIn['txid'] == vinOut['txid']: matchingIns+=1 assert_equal(matchingIns, 2) #we now must see two vins identical to vins given as params ######################################################### # test a fundrawtransaction with two VINs and two vOUTs # ######################################################### utx = get_unspent(self.nodes[2].listunspent(), 1) utx2 = get_unspent(self.nodes[2].listunspent(), 5) inputs = [ {'txid' : utx['txid'], 'vout' : utx['vout']},{'txid' : utx2['txid'], 'vout' : utx2['vout']} ] outputs = { self.nodes[0].getnewaddress() : 6.0, self.nodes[0].getnewaddress() : 1.0 } rawtx = self.nodes[2].createrawtransaction(inputs, outputs) dec_tx = self.nodes[2].decoderawtransaction(rawtx) assert_equal(utx['txid'], dec_tx['vin'][0]['txid']) rawtxfund = self.nodes[2].fundrawtransaction(rawtx) fee = rawtxfund['fee'] dec_tx = self.nodes[2].decoderawtransaction(rawtxfund['hex']) totalOut = 0 matchingOuts = 0 for out in dec_tx['vout']: totalOut += out['value'] if out['scriptPubKey']['addresses'][0] in outputs: matchingOuts+=1 assert_equal(matchingOuts, 2) assert_equal(len(dec_tx['vout']), 3) ############################################## # test a fundrawtransaction with invalid vin # ############################################## inputs = [ {'txid' : "1c7f966dab21119bac53213a2bc7532bff1fa844c124fd750a7d0b1332440bd1", 'vout' : 0} ] #invalid vin! outputs = { self.nodes[0].getnewaddress() : 1.0} rawtx = self.nodes[2].createrawtransaction(inputs, outputs) dec_tx = self.nodes[2].decoderawtransaction(rawtx) assert_raises_rpc_error(-4, "Insufficient funds", self.nodes[2].fundrawtransaction, rawtx) ############################################################ #compare fee of a standard pubkeyhash transaction inputs = [] outputs = {self.nodes[1].getnewaddress():1.1} rawtx = self.nodes[0].createrawtransaction(inputs, outputs) fundedTx = self.nodes[0].fundrawtransaction(rawtx) #create same transaction over sendtoaddress txId = self.nodes[0].sendtoaddress(self.nodes[1].getnewaddress(), 1.1) signedFee = self.nodes[0].getrawmempool(True)[txId]['fee'] #compare fee feeDelta = Decimal(fundedTx['fee']) - Decimal(signedFee) assert(feeDelta >= 0 and feeDelta <= feeTolerance) ############################################################ ############################################################ #compare fee of a standard pubkeyhash transaction with multiple outputs inputs = [] outputs = {self.nodes[1].getnewaddress():1.1,self.nodes[1].getnewaddress():1.2,self.nodes[1].getnewaddress():0.1,self.nodes[1].getnewaddress():1.3,self.nodes[1].getnewaddress():0.2,self.nodes[1].getnewaddress():0.3} rawtx = self.nodes[0].createrawtransaction(inputs, outputs) fundedTx = self.nodes[0].fundrawtransaction(rawtx) #create same transaction over sendtoaddress txId = self.nodes[0].sendmany("", outputs) signedFee = self.nodes[0].getrawmempool(True)[txId]['fee'] #compare fee feeDelta = Decimal(fundedTx['fee']) - Decimal(signedFee) assert(feeDelta >= 0 and feeDelta <= feeTolerance) ############################################################ ############################################################ #compare fee of a 2of2 multisig p2sh transaction # create 2of2 addr addr1 = self.nodes[1].getnewaddress() addr2 = self.nodes[1].getnewaddress() addr1Obj = self.nodes[1].getaddressinfo(addr1) addr2Obj = self.nodes[1].getaddressinfo(addr2) mSigObj = self.nodes[1].addmultisigaddress(2, [addr1Obj['pubkey'], addr2Obj['pubkey']])['address'] inputs = [] outputs = {mSigObj:1.1} rawtx = self.nodes[0].createrawtransaction(inputs, outputs) fundedTx = self.nodes[0].fundrawtransaction(rawtx) #create same transaction over sendtoaddress txId = self.nodes[0].sendtoaddress(mSigObj, 1.1) signedFee = self.nodes[0].getrawmempool(True)[txId]['fee'] #compare fee feeDelta = Decimal(fundedTx['fee']) - Decimal(signedFee) assert(feeDelta >= 0 and feeDelta <= feeTolerance) ############################################################ ############################################################ #compare fee of a standard pubkeyhash transaction # create 4of5 addr addr1 = self.nodes[1].getnewaddress() addr2 = self.nodes[1].getnewaddress() addr3 = self.nodes[1].getnewaddress() addr4 = self.nodes[1].getnewaddress() addr5 = self.nodes[1].getnewaddress() addr1Obj = self.nodes[1].getaddressinfo(addr1) addr2Obj = self.nodes[1].getaddressinfo(addr2) addr3Obj = self.nodes[1].getaddressinfo(addr3) addr4Obj = self.nodes[1].getaddressinfo(addr4) addr5Obj = self.nodes[1].getaddressinfo(addr5) mSigObj = self.nodes[1].addmultisigaddress(4, [addr1Obj['pubkey'], addr2Obj['pubkey'], addr3Obj['pubkey'], addr4Obj['pubkey'], addr5Obj['pubkey']])['address'] inputs = [] outputs = {mSigObj:1.1} rawtx = self.nodes[0].createrawtransaction(inputs, outputs) fundedTx = self.nodes[0].fundrawtransaction(rawtx) #create same transaction over sendtoaddress txId = self.nodes[0].sendtoaddress(mSigObj, 1.1) signedFee = self.nodes[0].getrawmempool(True)[txId]['fee'] #compare fee feeDelta = Decimal(fundedTx['fee']) - Decimal(signedFee) assert(feeDelta >= 0 and feeDelta <= feeTolerance) ############################################################ ############################################################ # spend a 2of2 multisig transaction over fundraw # create 2of2 addr addr1 = self.nodes[2].getnewaddress() addr2 = self.nodes[2].getnewaddress() addr1Obj = self.nodes[2].getaddressinfo(addr1) addr2Obj = self.nodes[2].getaddressinfo(addr2) mSigObj = self.nodes[2].addmultisigaddress(2, [addr1Obj['pubkey'], addr2Obj['pubkey']])['address'] # send 1.2 BTC to msig addr txId = self.nodes[0].sendtoaddress(mSigObj, 1.2) self.sync_all() self.nodes[1].generate(1) self.sync_all() oldBalance = self.nodes[1].getbalance() inputs = [] outputs = {self.nodes[1].getnewaddress():1.1} rawtx = self.nodes[2].createrawtransaction(inputs, outputs) fundedTx = self.nodes[2].fundrawtransaction(rawtx) signedTx = self.nodes[2].signrawtransactionwithwallet(fundedTx['hex']) txId = self.nodes[2].sendrawtransaction(signedTx['hex']) self.sync_all() self.nodes[1].generate(1) self.sync_all() # make sure funds are received at node1 assert_equal(oldBalance+Decimal('1.10000000'), self.nodes[1].getbalance()) ############################################################ # locked wallet test self.nodes[1].encryptwallet("test") self.stop_nodes() self.start_nodes() # This test is not meant to test fee estimation and we'd like # to be sure all txs are sent at a consistent desired feerate for node in self.nodes: node.settxfee(min_relay_tx_fee) connect_nodes_bi(self.nodes,0,1) connect_nodes_bi(self.nodes,1,2) connect_nodes_bi(self.nodes,0,2) connect_nodes_bi(self.nodes,0,3) # Again lock the watchonly UTXO or nodes[0] may spend it, because # lockunspent is memory-only and thus lost on restart self.nodes[0].lockunspent(False, [{"txid": watchonly_txid, "vout": watchonly_vout}]) self.sync_all() # drain the keypool self.nodes[1].getnewaddress() self.nodes[1].getrawchangeaddress() inputs = [] outputs = {self.nodes[0].getnewaddress():1.1} rawtx = self.nodes[1].createrawtransaction(inputs, outputs) # fund a transaction that requires a new key for the change output # creating the key must be impossible because the wallet is locked assert_raises_rpc_error(-4, "Keypool ran out, please call keypoolrefill first", self.nodes[1].fundrawtransaction, rawtx) #refill the keypool self.nodes[1].walletpassphrase("test", 100) self.nodes[1].keypoolrefill(8) #need to refill the keypool to get an internal change address self.nodes[1].walletlock() assert_raises_rpc_error(-13, "walletpassphrase", self.nodes[1].sendtoaddress, self.nodes[0].getnewaddress(), 1.2) oldBalance = self.nodes[0].getbalance() inputs = [] outputs = {self.nodes[0].getnewaddress():1.1} rawtx = self.nodes[1].createrawtransaction(inputs, outputs) fundedTx = self.nodes[1].fundrawtransaction(rawtx) #now we need to unlock self.nodes[1].walletpassphrase("test", 600) signedTx = self.nodes[1].signrawtransactionwithwallet(fundedTx['hex']) txId = self.nodes[1].sendrawtransaction(signedTx['hex']) self.nodes[1].generate(1) self.sync_all() # make sure funds are received at node1 assert_equal(oldBalance+Decimal('51.10000000'), self.nodes[0].getbalance()) ############################################### # multiple (~19) inputs tx test | Compare fee # ############################################### #empty node1, send some small coins from node0 to node1 self.nodes[1].sendtoaddress(self.nodes[0].getnewaddress(), self.nodes[1].getbalance(), "", "", True) self.sync_all() self.nodes[0].generate(1) self.sync_all() for i in range(0,20): self.nodes[0].sendtoaddress(self.nodes[1].getnewaddress(), 0.01) self.nodes[0].generate(1) self.sync_all() #fund a tx with ~20 small inputs inputs = [] outputs = {self.nodes[0].getnewaddress():0.15,self.nodes[0].getnewaddress():0.04} rawtx = self.nodes[1].createrawtransaction(inputs, outputs) fundedTx = self.nodes[1].fundrawtransaction(rawtx) #create same transaction over sendtoaddress txId = self.nodes[1].sendmany("", outputs) signedFee = self.nodes[1].getrawmempool(True)[txId]['fee'] #compare fee feeDelta = Decimal(fundedTx['fee']) - Decimal(signedFee) assert(feeDelta >= 0 and feeDelta <= feeTolerance*19) #~19 inputs ############################################# # multiple (~19) inputs tx test | sign/send # ############################################# #again, empty node1, send some small coins from node0 to node1 self.nodes[1].sendtoaddress(self.nodes[0].getnewaddress(), self.nodes[1].getbalance(), "", "", True) self.sync_all() self.nodes[0].generate(1) self.sync_all() for i in range(0,20): self.nodes[0].sendtoaddress(self.nodes[1].getnewaddress(), 0.01) self.nodes[0].generate(1) self.sync_all() #fund a tx with ~20 small inputs oldBalance = self.nodes[0].getbalance() inputs = [] outputs = {self.nodes[0].getnewaddress():0.15,self.nodes[0].getnewaddress():0.04} rawtx = self.nodes[1].createrawtransaction(inputs, outputs) fundedTx = self.nodes[1].fundrawtransaction(rawtx) fundedAndSignedTx = self.nodes[1].signrawtransactionwithwallet(fundedTx['hex']) txId = self.nodes[1].sendrawtransaction(fundedAndSignedTx['hex']) self.sync_all() self.nodes[0].generate(1) self.sync_all() assert_equal(oldBalance+Decimal('50.19000000'), self.nodes[0].getbalance()) #0.19+block reward ##################################################### # test fundrawtransaction with OP_RETURN and no vin # ##################################################### rawtx = "0100000000010000000000000000066a047465737400000000" dec_tx = self.nodes[2].decoderawtransaction(rawtx) assert_equal(len(dec_tx['vin']), 0) assert_equal(len(dec_tx['vout']), 1) rawtxfund = self.nodes[2].fundrawtransaction(rawtx) dec_tx = self.nodes[2].decoderawtransaction(rawtxfund['hex']) assert_greater_than(len(dec_tx['vin']), 0) # at least one vin assert_equal(len(dec_tx['vout']), 2) # one change output added ################################################## # test a fundrawtransaction using only watchonly # ################################################## inputs = [] outputs = {self.nodes[2].getnewaddress() : watchonly_amount / 2} rawtx = self.nodes[3].createrawtransaction(inputs, outputs) result = self.nodes[3].fundrawtransaction(rawtx, {'includeWatching': True }) res_dec = self.nodes[0].decoderawtransaction(result["hex"]) assert_equal(len(res_dec["vin"]), 1) assert_equal(res_dec["vin"][0]["txid"], watchonly_txid) assert("fee" in result.keys()) assert_greater_than(result["changepos"], -1) ############################################################### # test fundrawtransaction using the entirety of watched funds # ############################################################### inputs = [] outputs = {self.nodes[2].getnewaddress() : watchonly_amount} rawtx = self.nodes[3].createrawtransaction(inputs, outputs) # Backward compatibility test (2nd param is includeWatching) result = self.nodes[3].fundrawtransaction(rawtx, True) res_dec = self.nodes[0].decoderawtransaction(result["hex"]) assert_equal(len(res_dec["vin"]), 2) assert(res_dec["vin"][0]["txid"] == watchonly_txid or res_dec["vin"][1]["txid"] == watchonly_txid) assert_greater_than(result["fee"], 0) assert_greater_than(result["changepos"], -1) assert_equal(result["fee"] + res_dec["vout"][result["changepos"]]["value"], watchonly_amount / 10) signedtx = self.nodes[3].signrawtransactionwithwallet(result["hex"]) assert(not signedtx["complete"]) signedtx = self.nodes[0].signrawtransactionwithwallet(signedtx["hex"]) assert(signedtx["complete"]) self.nodes[0].sendrawtransaction(signedtx["hex"]) self.nodes[0].generate(1) self.sync_all() ####################### # Test feeRate option # ####################### # Make sure there is exactly one input so coin selection can't skew the result assert_equal(len(self.nodes[3].listunspent(1)), 1) inputs = [] outputs = {self.nodes[3].getnewaddress() : 1} rawtx = self.nodes[3].createrawtransaction(inputs, outputs) result = self.nodes[3].fundrawtransaction(rawtx) # uses min_relay_tx_fee (set by settxfee) result2 = self.nodes[3].fundrawtransaction(rawtx, {"feeRate": 2*min_relay_tx_fee}) result3 = self.nodes[3].fundrawtransaction(rawtx, {"feeRate": 10*min_relay_tx_fee}) assert_raises_rpc_error(-4, "Fee exceeds maximum configured by -maxtxfee", self.nodes[3].fundrawtransaction, rawtx, {"feeRate": 1}) result_fee_rate = result['fee'] * 1000 / count_bytes(result['hex']) assert_fee_amount(result2['fee'], count_bytes(result2['hex']), 2 * result_fee_rate) assert_fee_amount(result3['fee'], count_bytes(result3['hex']), 10 * result_fee_rate) ################################ # Test no address reuse occurs # ################################ result3 = self.nodes[3].fundrawtransaction(rawtx) res_dec = self.nodes[0].decoderawtransaction(result3["hex"]) changeaddress = "" for out in res_dec['vout']: if out['value'] > 1.0: changeaddress += out['scriptPubKey']['addresses'][0] assert(changeaddress != "") nextaddr = self.nodes[3].getnewaddress() # Now the change address key should be removed from the keypool assert(changeaddress != nextaddr) ###################################### # Test subtractFeeFromOutputs option # ###################################### # Make sure there is exactly one input so coin selection can't skew the result assert_equal(len(self.nodes[3].listunspent(1)), 1) inputs = [] outputs = {self.nodes[2].getnewaddress(): 1} rawtx = self.nodes[3].createrawtransaction(inputs, outputs) result = [self.nodes[3].fundrawtransaction(rawtx), # uses min_relay_tx_fee (set by settxfee) self.nodes[3].fundrawtransaction(rawtx, {"subtractFeeFromOutputs": []}), # empty subtraction list self.nodes[3].fundrawtransaction(rawtx, {"subtractFeeFromOutputs": [0]}), # uses min_relay_tx_fee (set by settxfee) self.nodes[3].fundrawtransaction(rawtx, {"feeRate": 2*min_relay_tx_fee}), self.nodes[3].fundrawtransaction(rawtx, {"feeRate": 2*min_relay_tx_fee, "subtractFeeFromOutputs": [0]})] dec_tx = [self.nodes[3].decoderawtransaction(tx_['hex']) for tx_ in result] output = [d['vout'][1 - r['changepos']]['value'] for d, r in zip(dec_tx, result)] change = [d['vout'][r['changepos']]['value'] for d, r in zip(dec_tx, result)] assert_equal(result[0]['fee'], result[1]['fee'], result[2]['fee']) assert_equal(result[3]['fee'], result[4]['fee']) assert_equal(change[0], change[1]) assert_equal(output[0], output[1]) assert_equal(output[0], output[2] + result[2]['fee']) assert_equal(change[0] + result[0]['fee'], change[2]) assert_equal(output[3], output[4] + result[4]['fee']) assert_equal(change[3] + result[3]['fee'], change[4]) inputs = [] outputs = {self.nodes[2].getnewaddress(): value for value in (1.0, 1.1, 1.2, 1.3)} rawtx = self.nodes[3].createrawtransaction(inputs, outputs) result = [self.nodes[3].fundrawtransaction(rawtx), # split the fee between outputs 0, 2, and 3, but not output 1 self.nodes[3].fundrawtransaction(rawtx, {"subtractFeeFromOutputs": [0, 2, 3]})] dec_tx = [self.nodes[3].decoderawtransaction(result[0]['hex']), self.nodes[3].decoderawtransaction(result[1]['hex'])] # Nested list of non-change output amounts for each transaction output = [[out['value'] for i, out in enumerate(d['vout']) if i != r['changepos']] for d, r in zip(dec_tx, result)] # List of differences in output amounts between normal and subtractFee transactions share = [o0 - o1 for o0, o1 in zip(output[0], output[1])] # output 1 is the same in both transactions assert_equal(share[1], 0) # the other 3 outputs are smaller as a result of subtractFeeFromOutputs assert_greater_than(share[0], 0) assert_greater_than(share[2], 0) assert_greater_than(share[3], 0) # outputs 2 and 3 take the same share of the fee assert_equal(share[2], share[3]) # output 0 takes at least as much share of the fee, and no more than 2 satoshis more, than outputs 2 and 3 assert_greater_than_or_equal(share[0], share[2]) assert_greater_than_or_equal(share[2] + Decimal(2e-8), share[0]) # the fee is the same in both transactions assert_equal(result[0]['fee'], result[1]['fee']) # the total subtracted from the outputs is equal to the fee assert_equal(share[0] + share[2] + share[3], result[0]['fee']) if __name__ == '__main__': RawTransactionsTest().main()